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-->< / style >
< / head >
< body >
< div class = "header" >
< p > < img class = "title" src = "mxml-cover.png" > < / p >
< h1 class = "title" > Mini-XML 4.0 Programming Manual< / h1 >
< p > Michael R Sweet< / p >
< p > Copyright © 2003-2024, All Rights Reserved.< / p >
< / div >
< div class = "contents" >
< h2 class = "title" > Contents< / h2 >
< ul class = "contents" >
< li > < a href = "#introduction" > Introduction< / a > < ul class = "subcontents" >
< li > < a href = "#history" > History< / a > < / li >
< li > < a href = "#resources" > Resources< / a > < / li >
< li > < a href = "#legal-stuff" > Legal Stuff< / a > < / li >
< / ul > < / li >
< li > < a href = "#using-mini-xml" > Using Mini-XML< / a > < ul class = "subcontents" >
< li > < a href = "#loading-an-xml-file" > Loading an XML File< / a > < / li >
< li > < a href = "#nodes" > Nodes< / a > < / li >
< li > < a href = "#creating-xml-documents" > Creating XML Documents< / a > < / li >
< li > < a href = "#saving-an-xml-file" > Saving an XML File< / a > < / li >
< li > < a href = "#memory-management" > Memory Management< / a > < / li >
< / ul > < / li >
< li > < a href = "#more-about-nodes" > More About Nodes< / a > < ul class = "subcontents" >
< li > < a href = "#element-nodes" > Element Nodes< / a > < / li >
< li > < a href = "#cdata-nodes" > CDATA Nodes< / a > < / li >
< li > < a href = "#comment-nodes" > Comment Nodes< / a > < / li >
< li > < a href = "#processing-instruction-nodes" > Processing Instruction Nodes< / a > < / li >
< li > < a href = "#integer-nodes" > Integer Nodes< / a > < / li >
< li > < a href = "#opaque-string-nodes" > Opaque String Nodes< / a > < / li >
< li > < a href = "#text-nodes" > Text Nodes< / a > < / li >
< li > < a href = "#real-number-nodes" > Real Number Nodes< / a > < / li >
< / ul > < / li >
< li > < a href = "#locating-data-in-an-xml-document" > Locating Data in an XML Document< / a > < ul class = "subcontents" >
< li > < a href = "#finding-nodes" > Finding Nodes< / a > < / li >
< li > < a href = "#iterating-nodes" > Iterating Nodes< / a > < / li >
< li > < a href = "#indexing" > Indexing< / a > < / li >
< / ul > < / li >
< li > < a href = "#custom-data-types" > Custom Data Types< / a > < / li >
< li > < a href = "#sax-stream-loading-of-documents" > SAX (Stream) Loading of Documents< / a > < / li >
< li > < a href = "#migrating-from-mini-xml-v3.x" > Migrating from Mini-XML v3.x< / a > < / li >
< li > < a href = "#FUNCTIONS" > Functions< / a > < ul class = "subcontents" >
< li > < a href = "#mxmlAdd" > mxmlAdd< / a > < / li >
< li > < a href = "#mxmlDelete" > mxmlDelete< / a > < / li >
< li > < a href = "#mxmlElementClearAttr" > mxmlElementClearAttr< / a > < / li >
< li > < a href = "#mxmlElementGetAttr" > mxmlElementGetAttr< / a > < / li >
< li > < a href = "#mxmlElementGetAttrByIndex" > mxmlElementGetAttrByIndex< / a > < / li >
< li > < a href = "#mxmlElementGetAttrCount" > mxmlElementGetAttrCount< / a > < / li >
< li > < a href = "#mxmlElementSetAttr" > mxmlElementSetAttr< / a > < / li >
< li > < a href = "#mxmlElementSetAttrf" > mxmlElementSetAttrf< / a > < / li >
< li > < a href = "#mxmlEntityAddCallback" > mxmlEntityAddCallback< / a > < / li >
< li > < a href = "#mxmlEntityGetValue" > mxmlEntityGetValue< / a > < / li >
< li > < a href = "#mxmlEntityRemoveCallback" > mxmlEntityRemoveCallback< / a > < / li >
< li > < a href = "#mxmlFindElement" > mxmlFindElement< / a > < / li >
< li > < a href = "#mxmlFindPath" > mxmlFindPath< / a > < / li >
< li > < a href = "#mxmlGetCDATA" > mxmlGetCDATA< / a > < / li >
< li > < a href = "#mxmlGetComment" > mxmlGetComment< / a > < / li >
< li > < a href = "#mxmlGetCustom" > mxmlGetCustom< / a > < / li >
< li > < a href = "#mxmlGetDeclaration" > mxmlGetDeclaration< / a > < / li >
< li > < a href = "#mxmlGetDirective" > mxmlGetDirective< / a > < / li >
< li > < a href = "#mxmlGetElement" > mxmlGetElement< / a > < / li >
< li > < a href = "#mxmlGetFirstChild" > mxmlGetFirstChild< / a > < / li >
< li > < a href = "#mxmlGetInteger" > mxmlGetInteger< / a > < / li >
< li > < a href = "#mxmlGetLastChild" > mxmlGetLastChild< / a > < / li >
< li > < a href = "#mxmlGetNextSibling" > mxmlGetNextSibling< / a > < / li >
< li > < a href = "#mxmlGetOpaque" > mxmlGetOpaque< / a > < / li >
< li > < a href = "#mxmlGetParent" > mxmlGetParent< / a > < / li >
< li > < a href = "#mxmlGetPrevSibling" > mxmlGetPrevSibling< / a > < / li >
< li > < a href = "#mxmlGetReal" > mxmlGetReal< / a > < / li >
< li > < a href = "#mxmlGetRefCount" > mxmlGetRefCount< / a > < / li >
< li > < a href = "#mxmlGetText" > mxmlGetText< / a > < / li >
< li > < a href = "#mxmlGetType" > mxmlGetType< / a > < / li >
< li > < a href = "#mxmlGetUserData" > mxmlGetUserData< / a > < / li >
< li > < a href = "#mxmlIndexDelete" > mxmlIndexDelete< / a > < / li >
< li > < a href = "#mxmlIndexEnum" > mxmlIndexEnum< / a > < / li >
< li > < a href = "#mxmlIndexFind" > mxmlIndexFind< / a > < / li >
< li > < a href = "#mxmlIndexGetCount" > mxmlIndexGetCount< / a > < / li >
< li > < a href = "#mxmlIndexNew" > mxmlIndexNew< / a > < / li >
< li > < a href = "#mxmlIndexReset" > mxmlIndexReset< / a > < / li >
< li > < a href = "#mxmlLoadFd" > mxmlLoadFd< / a > < / li >
< li > < a href = "#mxmlLoadFile" > mxmlLoadFile< / a > < / li >
< li > < a href = "#mxmlLoadFilename" > mxmlLoadFilename< / a > < / li >
< li > < a href = "#mxmlLoadIO" > mxmlLoadIO< / a > < / li >
< li > < a href = "#mxmlLoadString" > mxmlLoadString< / a > < / li >
< li > < a href = "#mxmlNewCDATA" > mxmlNewCDATA< / a > < / li >
< li > < a href = "#mxmlNewCDATAf" > mxmlNewCDATAf< / a > < / li >
< li > < a href = "#mxmlNewComment" > mxmlNewComment< / a > < / li >
< li > < a href = "#mxmlNewCommentf" > mxmlNewCommentf< / a > < / li >
< li > < a href = "#mxmlNewCustom" > mxmlNewCustom< / a > < / li >
< li > < a href = "#mxmlNewDeclaration" > mxmlNewDeclaration< / a > < / li >
< li > < a href = "#mxmlNewDeclarationf" > mxmlNewDeclarationf< / a > < / li >
< li > < a href = "#mxmlNewDirective" > mxmlNewDirective< / a > < / li >
< li > < a href = "#mxmlNewDirectivef" > mxmlNewDirectivef< / a > < / li >
< li > < a href = "#mxmlNewElement" > mxmlNewElement< / a > < / li >
< li > < a href = "#mxmlNewInteger" > mxmlNewInteger< / a > < / li >
< li > < a href = "#mxmlNewOpaque" > mxmlNewOpaque< / a > < / li >
< li > < a href = "#mxmlNewOpaquef" > mxmlNewOpaquef< / a > < / li >
< li > < a href = "#mxmlNewReal" > mxmlNewReal< / a > < / li >
< li > < a href = "#mxmlNewText" > mxmlNewText< / a > < / li >
< li > < a href = "#mxmlNewTextf" > mxmlNewTextf< / a > < / li >
< li > < a href = "#mxmlNewXML" > mxmlNewXML< / a > < / li >
< li > < a href = "#mxmlRelease" > mxmlRelease< / a > < / li >
< li > < a href = "#mxmlRemove" > mxmlRemove< / a > < / li >
< li > < a href = "#mxmlRetain" > mxmlRetain< / a > < / li >
< li > < a href = "#mxmlSaveAllocString" > mxmlSaveAllocString< / a > < / li >
< li > < a href = "#mxmlSaveFd" > mxmlSaveFd< / a > < / li >
< li > < a href = "#mxmlSaveFile" > mxmlSaveFile< / a > < / li >
< li > < a href = "#mxmlSaveFilename" > mxmlSaveFilename< / a > < / li >
< li > < a href = "#mxmlSaveIO" > mxmlSaveIO< / a > < / li >
< li > < a href = "#mxmlSaveString" > mxmlSaveString< / a > < / li >
< li > < a href = "#mxmlSetCDATA" > mxmlSetCDATA< / a > < / li >
< li > < a href = "#mxmlSetCDATAf" > mxmlSetCDATAf< / a > < / li >
< li > < a href = "#mxmlSetComment" > mxmlSetComment< / a > < / li >
< li > < a href = "#mxmlSetCommentf" > mxmlSetCommentf< / a > < / li >
< li > < a href = "#mxmlSetCustom" > mxmlSetCustom< / a > < / li >
< li > < a href = "#mxmlSetDeclaration" > mxmlSetDeclaration< / a > < / li >
< li > < a href = "#mxmlSetDeclarationf" > mxmlSetDeclarationf< / a > < / li >
< li > < a href = "#mxmlSetDirective" > mxmlSetDirective< / a > < / li >
< li > < a href = "#mxmlSetDirectivef" > mxmlSetDirectivef< / a > < / li >
< li > < a href = "#mxmlSetElement" > mxmlSetElement< / a > < / li >
< li > < a href = "#mxmlSetInteger" > mxmlSetInteger< / a > < / li >
< li > < a href = "#mxmlSetOpaque" > mxmlSetOpaque< / a > < / li >
< li > < a href = "#mxmlSetOpaquef" > mxmlSetOpaquef< / a > < / li >
< li > < a href = "#mxmlSetReal" > mxmlSetReal< / a > < / li >
< li > < a href = "#mxmlSetText" > mxmlSetText< / a > < / li >
< li > < a href = "#mxmlSetTextf" > mxmlSetTextf< / a > < / li >
< li > < a href = "#mxmlSetUserData" > mxmlSetUserData< / a > < / li >
< li > < a href = "#mxmlSetWrapMargin" > mxmlSetWrapMargin< / a > < / li >
< li > < a href = "#mxmlWalkNext" > mxmlWalkNext< / a > < / li >
< li > < a href = "#mxmlWalkPrev" > mxmlWalkPrev< / a > < / li >
< / ul > < / li >
< li > < a href = "#TYPES" > Data Types< / a > < ul class = "subcontents" >
< li > < a href = "#mxml_add_t" > mxml_add_t< / a > < / li >
< li > < a href = "#mxml_custom_destroy_cb_t" > mxml_custom_destroy_cb_t< / a > < / li >
< li > < a href = "#mxml_custom_load_cb_t" > mxml_custom_load_cb_t< / a > < / li >
< li > < a href = "#mxml_custom_save_cb_t" > mxml_custom_save_cb_t< / a > < / li >
< li > < a href = "#mxml_descend_t" > mxml_descend_t< / a > < / li >
< li > < a href = "#mxml_entity_cb_t" > mxml_entity_cb_t< / a > < / li >
< li > < a href = "#mxml_error_cb_t" > mxml_error_cb_t< / a > < / li >
< li > < a href = "#mxml_index_t" > mxml_index_t< / a > < / li >
< li > < a href = "#mxml_load_cb_t" > mxml_load_cb_t< / a > < / li >
< li > < a href = "#mxml_node_t" > mxml_node_t< / a > < / li >
< li > < a href = "#mxml_read_cb_t" > mxml_read_cb_t< / a > < / li >
< li > < a href = "#mxml_save_cb_t" > mxml_save_cb_t< / a > < / li >
< li > < a href = "#mxml_sax_cb_t" > mxml_sax_cb_t< / a > < / li >
< li > < a href = "#mxml_sax_event_t" > mxml_sax_event_t< / a > < / li >
< li > < a href = "#mxml_strcopy_cb_t" > mxml_strcopy_cb_t< / a > < / li >
< li > < a href = "#mxml_strfree_cb_t" > mxml_strfree_cb_t< / a > < / li >
< li > < a href = "#mxml_type_t" > mxml_type_t< / a > < / li >
< li > < a href = "#mxml_write_cb_t" > mxml_write_cb_t< / a > < / li >
< li > < a href = "#mxml_ws_t" > mxml_ws_t< / a > < / li >
< / ul > < / li >
< li > < a href = "#ENUMERATIONS" > Enumerations< / a > < ul class = "subcontents" >
< li > < a href = "#mxml_add_e" > mxml_add_e< / a > < / li >
< li > < a href = "#mxml_descend_e" > mxml_descend_e< / a > < / li >
< li > < a href = "#mxml_sax_event_e" > mxml_sax_event_e< / a > < / li >
< li > < a href = "#mxml_type_e" > mxml_type_e< / a > < / li >
< li > < a href = "#mxml_ws_e" > mxml_ws_e< / a > < / li >
< / ul > < / li >
< / ul >
< / div >
< div class = "body" >
< h2 class = "title" id = "introduction" > Introduction< / h2 >
< p > Mini-XML is a small XML parsing library that you can use to read XML data files or strings in your application without requiring large non-standard libraries. Mini-XML provides the following functionality:< / p >
< ul >
< li > < p > Reading of UTF-8 and UTF-16 and writing of UTF-8 encoded XML files and strings.< / p >
< / li >
< li > < p > Data is stored in a linked-list tree structure, preserving the XML data hierarchy.< / p >
< / li >
< li > < p > SAX (streamed) reading of XML files and strings to minimize memory usage.< / p >
< / li >
< li > < p > Supports arbitrary element names, attributes, and attribute values with no preset limits, just available memory.< / p >
< / li >
< li > < p > Supports integer, real, opaque (" CDATA" ), text, and custom data types in " leaf" nodes.< / p >
< / li >
< li > < p > Functions for creating and managing trees of data.< / p >
< / li >
< li > < p > " Find" and " walk" functions for easily locating and navigating trees of data.< / p >
< / li >
< / ul >
< p > Mini-XML doesn't do validation or other types of processing on the data based upon schema files or other sources of definition information.< / p >
< h3 class = "title" id = "history" > History< / h3 >
< p > Mini-XML was initially developed for the < a href = "http://gutenprint.sf.net/" > Gutenprint< / a > project to replace the rather large and unwieldy < code > libxml2< / code > library with something substantially smaller and easier-to-use. It all began one morning in June of 2003 when Robert posted the following sentence to the developer's list:< / p >
< blockquote >
< p > It's bad enough that we require libxml2, but rolling our own XML parser is a bit more than we can handle.< / p >
< / blockquote >
< p > I then replied with:< / p >
< blockquote >
< p > Given the limited scope of what you use in XML, it should be trivial to code a mini-XML API in a few hundred lines of code.< / p >
< / blockquote >
< p > I took my own challenge and coded furiously for two days to produce the initial public release of Mini-XML, total lines of code: 696. Robert promptly integrated Mini-XML into Gutenprint and removed libxml2.< / p >
< p > Thanks to lots of feedback and support from various developers, Mini-XML has evolved since then to provide a more complete XML implementation and now stands at a whopping 3,875 lines of code, compared to 175,808 lines of code for libxml2 version 2.11.7.< / p >
< h3 class = "title" id = "resources" > Resources< / h3 >
< p > The Mini-XML home page can be found at < a href = "https://www.msweet.org/mxml" > https://www.msweet.org/mxml< / a > . From there you can download the current version of Mini-XML, access the issue tracker, and find other resources.< / p >
< p > Mini-XML v4 has a slightly different API than prior releases. See the < a href = "#migrating-from-mini-xml-v3.x" > Migrating from Mini-XML v3.x< / a > chapter for details.< / p >
< h3 class = "title" id = "legal-stuff" > Legal Stuff< / h3 >
< p > The Mini-XML library is copyright © 2003-2024 by Michael R Sweet and is provided under the Apache License Version 2.0 with an (optional) exception to allow linking against GPL2/LGPL2-only software. See the files " LICENSE" and " NOTICE" for more information.< / p >
< h2 class = "title" id = "using-mini-xml" > Using Mini-XML< / h2 >
< p > Mini-XML provides a single header file which you include:< / p >
< pre > < code class = "language-c" > < span class = "directive" > #include < mxml.h> < / span >
< / code > < / pre >
< p > The Mini-XML library is included with your program using the < code > -lmxml4< / code > option:< / p >
< pre > < code > gcc -o myprogram myprogram.c -lmxml4
< / code > < / pre >
< p > If you have the < code > pkg-config< / code > software installed, you can use it to determine the proper compiler and linker options for your installation:< / p >
< pre > < code > gcc `pkg-config --cflags mxml4` -o myprogram myprogram.c `pkg-config --libs mxml4`
< / code > < / pre >
< blockquote >
< p > Note: The library name " mxml4" is a configure-time option. If you use the < code > --disable-libmxml4-prefix< / code > configure option the library is named " mxml" .< / p >
< / blockquote >
< h3 class = "title" id = "loading-an-xml-file" > Loading an XML File< / h3 >
< p > You load an XML file using the < a href = "#mxmlLoadFile" > mxmlLoadFile< / a > function:< / p >
< pre > < code class = "language-c" > mxml_node_t *
mxmlLoadFilename(mxml_node_t *top, < span class = "reserved" > const< / span > < span class = "reserved" > char< / span > *filename,
mxml_load_cb_t load_cb, < span class = "reserved" > void< / span > *load_cbdata,
mxml_sax_cb_t sax_cb, < span class = "reserved" > void< / span > *sax_cbdata);
< / code > < / pre >
< p > The < code > load_cb< / code > argument specifies a function that assigns child (value) node types for each element in the document. The default callback (< code > NULL< / code > ) supports passing a pointer to an < code > mxml_type_t< / code > variable containing the type of value nodes. For example, to load the XML file " filename.xml" containing literal strings you can use:< / p >
< pre > < code class = "language-c" > mxml_node_t *tree;
mxml_type_t type = MXML_TYPE_OPAQUE;
tree = mxmlLoadFilename(< span class = "comment" > /*top*/< / span > NULL, < span class = "string" > " filename.xml" < / span > ,
< span class = "comment" > /*load_cb*/< / span > NULL, < span class = "comment" > /*load_cbdata*/< / span > & type,
< span class = "comment" > /*sax_cb*/< / span > NULL, < span class = "comment" > /*sax_cbdata*/< / span > NULL);
< / code > < / pre >
< p > Mini-XML also provides functions to load from a < code > FILE< / code > pointer, a file descriptor, or string:< / p >
< pre > < code class = "language-c" > mxml_node_t *
mxmlLoadFd(mxml_node_t *top, < span class = "reserved" > int< / span > fd,
mxml_load_cb_t load_cb, < span class = "reserved" > void< / span > *load_cbdata,
mxml_sax_cb_t sax_cb, < span class = "reserved" > void< / span > *sax_cbdata);
mxml_node_t *
mxmlLoadFile(mxml_node_t *top, FILE *fp,
mxml_load_cb_t load_cb, < span class = "reserved" > void< / span > *load_cbdata,
mxml_sax_cb_t sax_cb, < span class = "reserved" > void< / span > *sax_cbdata);
mxml_node_t *
mxmlLoadString(mxml_node_t *top, < span class = "reserved" > const< / span > < span class = "reserved" > char< / span > *s,
mxml_load_cb_t load_cb, < span class = "reserved" > void< / span > *load_cbdata,
mxml_sax_cb_t sax_cb, < span class = "reserved" > void< / span > *sax_cbdata);
< / code > < / pre >
< h4 id = "load-callbacks" > Load Callbacks< / h4 >
< p > The < code > load_xxx< / code > arguments to the mxmlLoadXxx functions are a callback function and a data pointer which are used to determine the value type of each data node in an XML document. The default (< code > NULL< / code > ) callback expects the < code > load_cbdata< / code > argument to be a pointer to a < code > mxml_type_t< / code > variable that contains the desired value node type - if < code > NULL< / code > , it uses the < code > MXML_TYPE_TEXT< / code > (whitespace-separated text) type.< / p >
< p > You can provide your own callback function for more complex XML documents. Your callback function will receive a pointer to the current element node and must return the value type of the immediate children for that element node: < code > MXML_TYPE_CUSTOM< / code > , < code > MXML_TYPE_INTEGER< / code > , < code > MXML_TYPE_OPAQUE< / code > , < code > MXML_TYPE_REAL< / code > , or < code > MXML_TYPE_TEXT< / code > . The function is called < em > after< / em > the element and its attributes have been read so you can look at the element name, attributes, and attribute values to determine the proper value type to return.< / p >
< p > The following callback function looks for an attribute named " type" or the element name to determine the value type for its child nodes:< / p >
< pre > < code class = "language-c" > mxml_type_t
my_load_cb(< span class = "reserved" > void< / span > *cbdata, mxml_node_t *node)
{
< span class = "reserved" > const< / span > < span class = "reserved" > char< / span > *type;
< span class = "comment" > /*< / span >
< span class = "comment" > * You can lookup attributes and/or use the element name,< / span >
< span class = "comment" > * hierarchy, etc...< / span >
< span class = "comment" > */< / span >
type = mxmlElementGetAttr(node, < span class = "string" > " type" < / span > );
< span class = "reserved" > if< / span > (type == NULL)
type = mxmlGetElement(node);
< span class = "reserved" > if< / span > (type == NULL)
type = < span class = "string" > " text" < / span > ;
< span class = "reserved" > if< / span > (!strcmp(type, < span class = "string" > " integer" < / span > ))
< span class = "reserved" > return< / span > (MXML_TYPE_INTEGER);
< span class = "reserved" > else< / span > < span class = "reserved" > if< / span > (!strcmp(type, < span class = "string" > " opaque" < / span > ))
< span class = "reserved" > return< / span > (MXML_TYPE_OPAQUE);
< span class = "reserved" > else< / span > < span class = "reserved" > if< / span > (!strcmp(type, < span class = "string" > " real" < / span > ))
< span class = "reserved" > return< / span > (MXML_TYPE_REAL);
< span class = "reserved" > else< / span >
< span class = "reserved" > return< / span > (MXML_TYPE_TEXT);
}
< / code > < / pre >
< p > To use this callback function, simply specify it when you call any of the load functions:< / p >
< pre > < code class = "language-c" > mxml_node_t *tree;
tree = mxmlLoadFilename(< span class = "comment" > /*top*/< / span > NULL, < span class = "string" > " filename.xml" < / span > ,
my_load_cb, < span class = "comment" > /*load_cbdata*/< / span > NULL,
< span class = "comment" > /*sax_cb*/< / span > NULL, < span class = "comment" > /*sax_cbdata*/< / span > NULL);
< / code > < / pre >
< h3 class = "title" id = "nodes" > Nodes< / h3 >
< p > Every piece of information in an XML file is stored in memory in " nodes" . Nodes are defined by the < code > mxml_node_t< / code > structure. Each node has a typed value, optional user data, a parent node, sibling nodes (previous and next), and potentially child nodes.< / p >
< p > For example, if you have an XML file like the following:< / p >
< pre > < code > < ?xml version=" 1.0" encoding=" utf-8" ?>
< data>
< node> val1< /node>
< node> val2< /node>
< node> val3< /node>
< group>
< node> val4< /node>
< node> val5< /node>
< node> val6< /node>
< /group>
< node> val7< /node>
< node> val8< /node>
< /data>
< / code > < / pre >
< p > the node tree for the file would look like the following in memory:< / p >
< pre > < code > ?xml version=" 1.0" encoding=" utf-8" ?
|
data
|
node - node - node - group - node - node
| | | | | |
val1 val2 val3 | val7 val8
|
node - node - node
| | |
val4 val5 val6
< / code > < / pre >
< p > where " -" is a pointer to the sibling node and " |" is a pointer to the first child or parent node.< / p >
< p > The < a href = "#mxmlGetType" > mxmlGetType< / a > function gets the type of a node:< / p >
< pre > < code class = "language-c" > mxml_type_t
mxmlGetType(mxml_node_t *node);
< / code > < / pre >
< ul >
< li > < p > < code > MXML_TYPE_CDATA< / code > : CDATA,< / p >
< / li >
< li > < p > < code > MXML_TYPE_COMMENT< / code > : A comment,< / p >
< / li >
< li > < p > < code > MXML_TYPE_CUSTOM< / code > : A custom value defined by your application,< / p >
< / li >
< li > < p > < code > MXML_TYPE_DECLARATION< / code > : A declaration such as < code > < !DOCTYPE html> < / code > ,< / p >
< / li >
< li > < p > < code > MXML_TYPE_DIRECTIVE< / code > : A processing instruction such as < code > < ?xml version=" 1.0" ?> < / code > ,< / p >
< / li >
< li > < p > < code > MXML_TYPE_ELEMENT< / code > : An XML element,< / p >
< / li >
< li > < p > < code > MXML_TYPE_INTEGER< / code > : A whitespace-delimited integer value,< / p >
< / li >
< li > < p > < code > MXML_TYPE_OPAQUE< / code > : An opaque string value that preserves all whitespace,< / p >
< / li >
< li > < p > < code > MXML_TYPE_REAL< / code > : A whitespace-delimited floating point value, or< / p >
< / li >
< li > < p > < code > MXML_TYPE_TEXT< / code > : A whitespace-delimited text (fragment) value.< / p >
< / li >
< / ul >
< p > The parent and sibling nodes are accessed using the < a href = "#mxmlGetParent" > mxmlGetParent< / a > , < a href = "#mxmlGetNextSibling" > mxmlGetNextSibling< / a > , and < a href = "#mxmlGetPreviousSibling" > mxmlGetPreviousSibling< / a > functions, while the children of an element node are accessed using the < a href = "#mxmlGetFirstChild" > mxmlGetFirstChild< / a > or < a href = "#mxmlGetLastChild" > mxmlGetLastChild< / a > functions:< / p >
< pre > < code class = "language-c" > mxml_node_t *
mxmlGetFirstChild(mxml_node_t *node);
mxml_node_t *
mxmlGetLastChild(mxml_node_t *node);
mxml_node_t *
mxmlGetNextSibling(mxml_node_t *node);
mxml_node_t *
mxmlGetParent(mxml_node_t *node);
mxml_node_t *
mxmlGetPrevSibling(mxml_node_t *node);
< / code > < / pre >
< p > The < a href = "#mxmlGetUserData" > mxmlGetUserData< / a > function gets any user (application) data associated with the node:< / p >
< pre > < code class = "language-c" > < span class = "reserved" > void< / span > *
mxmlGetUserData(mxml_node_t *node);
< / code > < / pre >
< h3 class = "title" id = "creating-xml-documents" > Creating XML Documents< / h3 >
< p > You can create and update XML documents in memory using the various mxmlNewXxx functions. The following code will create the XML document described in the previous section:< / p >
< pre > < code class = "language-c" > mxml_node_t *xml; < span class = "comment" > /* < ?xml version=" 1.0" ?> */< / span >
mxml_node_t *data; < span class = "comment" > /* < data> */< / span >
mxml_node_t *node; < span class = "comment" > /* < node> */< / span >
mxml_node_t *group; < span class = "comment" > /* < group> */< / span >
xml = mxmlNewXML(< span class = "string" > " 1.0" < / span > );
data = mxmlNewElement(xml, < span class = "string" > " data" < / span > );
node = mxmlNewElement(data, < span class = "string" > " node" < / span > );
mxmlNewText(node, < span class = "reserved" > false< / span > , < span class = "string" > " val1" < / span > );
node = mxmlNewElement(data, < span class = "string" > " node" < / span > );
mxmlNewText(node, < span class = "reserved" > false< / span > , < span class = "string" > " val2" < / span > );
node = mxmlNewElement(data, < span class = "string" > " node" < / span > );
mxmlNewText(node, < span class = "reserved" > false< / span > , < span class = "string" > " val3" < / span > );
group = mxmlNewElement(data, < span class = "string" > " group" < / span > );
node = mxmlNewElement(group, < span class = "string" > " node" < / span > );
mxmlNewText(node, < span class = "reserved" > false< / span > , < span class = "string" > " val4" < / span > );
node = mxmlNewElement(group, < span class = "string" > " node" < / span > );
mxmlNewText(node, < span class = "reserved" > false< / span > , < span class = "string" > " val5" < / span > );
node = mxmlNewElement(group, < span class = "string" > " node" < / span > );
mxmlNewText(node, < span class = "reserved" > false< / span > , < span class = "string" > " val6" < / span > );
node = mxmlNewElement(data, < span class = "string" > " node" < / span > );
mxmlNewText(node, < span class = "reserved" > false< / span > , < span class = "string" > " val7" < / span > );
node = mxmlNewElement(data, < span class = "string" > " node" < / span > );
mxmlNewText(node, < span class = "reserved" > false< / span > , < span class = "string" > " val8" < / span > );
< / code > < / pre >
< p > We start by creating the declaration node common to all XML files using the < a href = "#mxmlNewXML" > mxmlNewXML< / a > function:< / p >
< pre > < code class = "language-c" > xml = mxmlNewXML(< span class = "string" > " 1.0" < / span > );
< / code > < / pre >
< p > We then create the < code > < data> < / code > node used for this document using the < a href = "#mxmlNewElement" > mxmlNewElement< / a > function. The first argument specifies the parent node (< code > xml< / code > ) while the second specifies the element name (< code > data< / code > ):< / p >
< pre > < code class = "language-c" > data = mxmlNewElement(xml, < span class = "string" > " data" < / span > );
< / code > < / pre >
< p > Each < code > < node> ...< /node> < / code > in the file is created using the < a href = "#mxmlNewElement" > mxmlNewElement< / a > and < a href = "#mxmlNewText" > mxmlNewText< / a > functions. The first argument of < a href = "#mxmlNewText" > mxmlNewText< / a > specifies the parent node (< code > node< / code > ). The second argument specifies whether whitespace appears before the text - < code > false< / code > in this case. The last argument specifies the actual text to add:< / p >
< pre > < code class = "language-c" > node = mxmlNewElement(data, < span class = "string" > " node" < / span > );
mxmlNewText(node, < span class = "reserved" > false< / span > , < span class = "string" > " val1" < / span > );
< / code > < / pre >
< p > The resulting in-memory XML document can then be saved or processed just like one loaded from disk or a string.< / p >
< h3 class = "title" id = "saving-an-xml-file" > Saving an XML File< / h3 >
< p > You save an XML file using the < a href = "#mxmlSaveFilename" > mxmlSaveFilename< / a > function:< / p >
< pre > < code class = "language-c" > < span class = "reserved" > bool< / span >
mxmlSaveFilename(mxml_node_t *node, < span class = "reserved" > const< / span > < span class = "reserved" > char< / span > *filename,
mxml_save_cb_t cb, < span class = "reserved" > void< / span > *cbdata);
< / code > < / pre >
< p > The < code > cb< / code > and < code > cbdata< / code > arguments specify a function and data pointer that is called to determine what whitespace (if any) is inserted before and after each element node. A < code > NULL< / code > value tells Mini-XML to not include any extra whitespace. For example, so save an XML file to the file " filename.xml" with no extra whitespace:< / p >
< pre > < code class = "language-c" > mxmlSaveFile(xml, < span class = "string" > " filename.xml" < / span > , < span class = "comment" > /*cb*/< / span > NULL, < span class = "comment" > /*cbdata*/< / span > NULL);
< / code > < / pre >
< p > Mini-XML also provides functions to save to a file descriptor, < code > FILE< / code > pointer, or strings:< / p >
< pre > < code class = "language-c" > < span class = "reserved" > char< / span > *
mxmlSaveAllocString(mxml_node_t *node, mxml_save_cb_t cb,
< span class = "reserved" > void< / span > *cbdata);
< span class = "reserved" > bool< / span >
mxmlSaveFd(mxml_node_t *node, < span class = "reserved" > int< / span > fd, mxml_save_cb_t cb,
< span class = "reserved" > void< / span > *cbdata);
< span class = "reserved" > bool< / span >
mxmlSaveFile(mxml_node_t *node, FILE *fp, mxml_save_cb_t cb,
< span class = "reserved" > void< / span > *cbdata);
size_t
mxmlSaveString(mxml_node_t *node, < span class = "reserved" > char< / span > *buffer, size_t bufsize,
mxml_save_cb_t cb, < span class = "reserved" > void< / span > *cbdata);
< / code > < / pre >
< h4 id = "controlling-line-wrapping" > Controlling Line Wrapping< / h4 >
< p > When saving XML documents, Mini-XML normally wraps output lines at column 75 so that the text is readable in terminal windows. The < a href = "#mxmlSetWrapMargin" > mxmlSetWrapMargin< / a > function overrides the default wrap margin for the current thread:< / p >
< pre > < code class = "language-c" > < span class = "reserved" > void< / span > mxmlSetWrapMargin(< span class = "reserved" > int< / span > column);
< / code > < / pre >
< p > For example, the following code sets the margin to 132 columns:< / p >
< pre > < code class = "language-c" > mxmlSetWrapMargin(< span class = "number" > 132< / span > );
< / code > < / pre >
< p > while the following code disables wrapping by setting the margin to 0:< / p >
< pre > < code class = "language-c" > mxmlSetWrapMargin(< span class = "number" > 0< / span > );
< / code > < / pre >
< h4 id = "save-callbacks" > Save Callbacks< / h4 >
< p > The last arguments to the mxmlSaveXxx functions are a callback function and data pointer which is used to automatically insert whitespace in an XML document. Your callback function will be called up to four times for each element node with a pointer to the node and a < code > where< / code > value of < code > MXML_WS_BEFORE_OPEN< / code > , < code > MXML_WS_AFTER_OPEN< / code > , < code > MXML_WS_BEFORE_CLOSE< / code > , or < code > MXML_WS_AFTER_CLOSE< / code > . The callback function should return < code > NULL< / code > if no whitespace should be added or the string to insert (spaces, tabs, carriage returns, and newlines) otherwise.< / p >
< p > The following whitespace callback can be used to add whitespace to XHTML output to make it more readable in a standard text editor:< / p >
< pre > < code class = "language-c" > < span class = "reserved" > const< / span > < span class = "reserved" > char< / span > *
whitespace_cb(< span class = "reserved" > void< / span > *cbdata, mxml_node_t *node, mxml_ws_t where)
{
< span class = "reserved" > const< / span > < span class = "reserved" > char< / span > *element;
< span class = "comment" > /*< / span >
< span class = "comment" > * We can conditionally break to a new line before or after< / span >
< span class = "comment" > * any element. These are just common HTML elements...< / span >
< span class = "comment" > */< / span >
element = mxmlGetElement(node);
< span class = "reserved" > if< / span > (!strcmp(element, < span class = "string" > " html" < / span > ) ||
!strcmp(element, < span class = "string" > " head" < / span > ) ||
!strcmp(element, < span class = "string" > " body" < / span > ) ||
!strcmp(element, < span class = "string" > " pre" < / span > ) ||
!strcmp(element, < span class = "string" > " p" < / span > ) ||
!strcmp(element, < span class = "string" > " h1" < / span > ) ||
!strcmp(element, < span class = "string" > " h2" < / span > ) ||
!strcmp(element, < span class = "string" > " h3" < / span > ) ||
!strcmp(element, < span class = "string" > " h4" < / span > ) ||
!strcmp(element, < span class = "string" > " h5" < / span > ) ||
!strcmp(element, < span class = "string" > " h6" < / span > ))
{
< span class = "comment" > /*< / span >
< span class = "comment" > * Newlines before open and after close...< / span >
< span class = "comment" > */< / span >
< span class = "reserved" > if< / span > (where == MXML_WS_BEFORE_OPEN ||
where == MXML_WS_AFTER_CLOSE)
< span class = "reserved" > return< / span > (< span class = "string" > " \n" < / span > );
}
< span class = "reserved" > else< / span > < span class = "reserved" > if< / span > (!strcmp(element, < span class = "string" > " dl" < / span > ) ||
!strcmp(element, < span class = "string" > " ol" < / span > ) ||
!strcmp(element, < span class = "string" > " ul" < / span > ))
{
< span class = "comment" > /*< / span >
< span class = "comment" > * Put a newline before and after list elements...< / span >
< span class = "comment" > */< / span >
< span class = "reserved" > return< / span > (< span class = "string" > " \n" < / span > );
}
< span class = "reserved" > else< / span > < span class = "reserved" > if< / span > (!strcmp(element, < span class = "string" > " dd" < / span > ) ||
!strcmp(element, < span class = "string" > " dt" < / span > ) ||
!strcmp(element, < span class = "string" > " li" < / span > ))
{
< span class = "comment" > /*< / span >
< span class = "comment" > * Put a tab before < li> 's, < dd> 's, and < dt> 's, and a< / span >
< span class = "comment" > * newline after them...< / span >
< span class = "comment" > */< / span >
< span class = "reserved" > if< / span > (where == MXML_WS_BEFORE_OPEN)
< span class = "reserved" > return< / span > (< span class = "string" > " \t" < / span > );
< span class = "reserved" > else< / span > < span class = "reserved" > if< / span > (where == MXML_WS_AFTER_CLOSE)
< span class = "reserved" > return< / span > (< span class = "string" > " \n" < / span > );
}
< span class = "comment" > /*< / span >
< span class = "comment" > * Otherwise return NULL for no added whitespace...< / span >
< span class = "comment" > */< / span >
< span class = "reserved" > return< / span > (NULL);
}
< / code > < / pre >
< p > To use this callback function, simply use the name when you call any of the save functions:< / p >
< pre > < code class = "language-c" > FILE *fp;
mxml_node_t *tree;
fp = fopen(< span class = "string" > " filename.xml" < / span > , < span class = "string" > " w" < / span > );
mxmlSaveFile(tree, fp, whitespace_cb, < span class = "comment" > /*cbdata*/< / span > NULL);
fclose(fp);
< / code > < / pre >
< h3 class = "title" id = "memory-management" > Memory Management< / h3 >
< p > Once you are done with the XML data, use the < a href = "#mxmlDelete" > mxmlDelete< / a > function to free the memory that is used for a particular node and its children:< / p >
< pre > < code class = "language-c" > < span class = "reserved" > void< / span >
mxmlDelete(mxml_node_t *tree);
< / code > < / pre >
< p > You can also use reference counting to manage memory usage. The < a href = "#mxmlRetain" > mxmlRetain< / a > and < a href = "#mxmlRelease" > mxmlRelease< / a > functions increment and decrement a node's use count, respectively. When the use count goes to zero, < a href = "#mxmlRelease" > mxmlRelease< / a > calls < a href = "#mxmlDelete" > mxmlDelete< / a > to actually free the memory used by the node tree. New nodes start with a use count of < code > 1< / code > .< / p >
< h2 class = "title" id = "more-about-nodes" > More About Nodes< / h2 >
< h3 class = "title" id = "element-nodes" > Element Nodes< / h3 >
< p > Element (< code > MXML_TYPE_ELEMENT< / code > ) nodes are created using the < a href = "#mxmlNewElement" > mxmlNewElement< / a > function. Element attributes are set using the < a href = "#mxmlElementSetAttr" > mxmlElementSetAttr< / a > and < a href = "#mxmlElementSetAttrf" > mxmlElementSetAttrf< / a > functions and cleared using the < a href = "#mxmlElementClearAttr" > mxmlElementClearAttr< / a > function:< / p >
< pre > < code class = "language-c" > mxml_node_t *
mxmlNewElement(mxml_node_t *parent, < span class = "reserved" > const< / span > < span class = "reserved" > char< / span > *name);
< span class = "reserved" > void< / span >
mxmlElementClearAttr(mxml_node_t *node, < span class = "reserved" > const< / span > < span class = "reserved" > char< / span > *name);
< span class = "reserved" > void< / span >
mxmlElementSetAttr(mxml_node_t *node, < span class = "reserved" > const< / span > < span class = "reserved" > char< / span > *name,
< span class = "reserved" > const< / span > < span class = "reserved" > char< / span > *value);
< span class = "reserved" > void< / span >
mxmlElementSetAttrf(mxml_node_t *node, < span class = "reserved" > const< / span > < span class = "reserved" > char< / span > *name,
< span class = "reserved" > const< / span > < span class = "reserved" > char< / span > *format, ...);
< / code > < / pre >
< p > The < a href = "#mxmlGetElement" > mxmlGetElement< / a > function retrieves the element name while the < a href = "#mxmlElementGetAttr" > mxmlElementGetAttr< / a > function retrieves the value string for a named attribute associated with the element. The < a href = "#mxmlElementGetAttrByIndex" > mxmlElementGetAttrByIndex< / a > and < a href = "#mxmlElementGetAttrCount" > mxmlElementGetAttrCount< / a > functions retrieve attributes by index:< / p >
< pre > < code class = "language-c" > < span class = "reserved" > const< / span > < span class = "reserved" > char< / span > *
mxmlGetElement(mxml_node_t *node);
< span class = "reserved" > const< / span > < span class = "reserved" > char< / span > *
mxmlElementGetAttr(mxml_node_t *node, < span class = "reserved" > const< / span > < span class = "reserved" > char< / span > *name);
< span class = "reserved" > const< / span > < span class = "reserved" > char< / span > *
mxmlElementGetAttrByIndex(mxml_node_t *node, size_t idx,
< span class = "reserved" > const< / span > < span class = "reserved" > char< / span > **name);
size_t
mxmlElementGetAttrCount(mxml_node_t *node);
< / code > < / pre >
< h3 class = "title" id = "cdata-nodes" > CDATA Nodes< / h3 >
< p > CDATA (< code > MXML_TYPE_CDATA< / code > ) nodes are created using the < a href = "#mxmlNewCDATA" > mxmlNewCDATA< / a > and < a href = "#mxmlNewCDATAf" > mxmlNewCDATAf< / a > functions:< / p >
< pre > < code class = "language-c" > mxml_node_t *
mxmlNewCDATA(mxml_node_t *parent, < span class = "reserved" > const< / span > < span class = "reserved" > char< / span > *string);
mxml_node_t *
mxmlNewCDATAf(mxml_node_t *parent, < span class = "reserved" > const< / span > < span class = "reserved" > char< / span > *format, ...);
< / code > < / pre >
< p > The < a href = "#mxmlGetCDATA" > mxmlGetCDATA< / a > function retrieves the CDATA string pointer for a node:< / p >
< pre > < code class = "language-c" > < span class = "reserved" > const< / span > < span class = "reserved" > char< / span > *
mxmlGetCDATA(mxml_node_t *node);
< / code > < / pre >
< h3 class = "title" id = "comment-nodes" > Comment Nodes< / h3 >
< p > Comment (< code > MXML_TYPE_COMMENT< / code > ) nodes are created using the < a href = "#mxmlNewComment" > mxmlNewComment< / a > and < a href = "#mxmlNewCommentf" > mxmlNewCommentf< / a > functions, for example:< / p >
< pre > < code class = "language-c" > mxml_node_t *node = mxmlNewComment(< span class = "string" > " This is a comment " < / span > );
mxml_node_t *node = mxmlNewCommentf(< span class = "string" > " This is comment %d " < / span > , < span class = "number" > 42< / span > );
< / code > < / pre >
< p > Similarly, the < a href = "#mxmlGetComment" > mxmlGetComment< / a > function retrieves the comment string pointer for a node:< / p >
< pre > < code class = "language-c" > < span class = "reserved" > const< / span > < span class = "reserved" > char< / span > *comment = mxmlGetComment(node);
< span class = "comment" > /* returns " This is a comment " */< / span >
< / code > < / pre >
< h3 class = "title" id = "processing-instruction-nodes" > Processing Instruction Nodes< / h3 >
< p > Processing instruction (< code > MXML_TYPE_DIRECTIVE< / code > ) nodes are created using the < a href = "#mxmlNewDirective" > mxmlNewDirective< / a > and < a href = "#mxmlNewDirectivef" > mxmlNewDirectivef< / a > functions:< / p >
< pre > < code class = "language-c" > mxml_node_t *node = mxmlNewDirective(< span class = "string" > " xml-stylesheet type=\" text/css\" href=\" style.css\" " < / span > );
mxml_node_t *node = mxmlNewDirectivef(< span class = "string" > " xml version=\" %s\" " < / span > , version);
< / code > < / pre >
< p > The < a href = "#mxmlGetDirective" > mxmlGetDirective< / a > function retrieves the processing instruction string for a node:< / p >
< pre > < code class = "language-c" > < span class = "reserved" > const< / span > < span class = "reserved" > char< / span > *instr = mxmlGetElement(node);
< span class = "comment" > /* returns " xml-stylesheet type=\" text/css\" href=\" style.css\" " */< / span >
< / code > < / pre >
< p > The < a href = "#mxmlNewXML" > mxmlNewXML< / a > function can be used to create the top-level " xml" processing instruction with an associated version number:< / p >
< pre > < code class = "language-c" > mxml_node_t *
mxmlNewXML(< span class = "reserved" > const< / span > < span class = "reserved" > char< / span > *version);
< / code > < / pre >
< h3 class = "title" id = "integer-nodes" > Integer Nodes< / h3 >
< p > Integer (< code > MXML_TYPE_INTEGER< / code > ) nodes are created using the < a href = "#mxmlNewInteger" > mxmlNewInteger< / a > function:< / p >
< pre > < code class = "language-c" > mxml_node_t *
mxmlNewInteger(mxml_node_t *parent, < span class = "reserved" > long< / span > integer);
< / code > < / pre >
< p > The < a href = "#mxmlGetInteger" > mxmlGetInteger< / a > function retrieves the integer value for a node:< / p >
< pre > < code class = "language-c" > < span class = "reserved" > long< / span >
mxmlGetInteger(mxml_node_t *node);
< / code > < / pre >
< h3 class = "title" id = "opaque-string-nodes" > Opaque String Nodes< / h3 >
< p > Opaque string (< code > MXML_TYPE_OPAQUE< / code > ) nodes are created using the < a href = "#mxmlNewOpaque" > mxmlNewOpaque< / a > and < a href = "#mxmlNewOpaquef" > mxmlNewOpaquef< / a > functions:< / p >
< pre > < code class = "language-c" > mxml_node_t *
mxmlNewOpaque(mxml_node_t *parent, < span class = "reserved" > const< / span > < span class = "reserved" > char< / span > *opaque);
mxml_node_t *
mxmlNewOpaquef(mxml_node_t *parent, < span class = "reserved" > const< / span > < span class = "reserved" > char< / span > *format, ...);
< / code > < / pre >
< p > The < a href = "#mxmlGetOpaque" > mxmlGetOpaque< / a > function retrieves the opaque string pointer for a node:< / p >
< pre > < code class = "language-c" > < span class = "reserved" > const< / span > < span class = "reserved" > char< / span > *
mxmlGetOpaque(mxml_node_t *node);
< / code > < / pre >
< h3 class = "title" id = "text-nodes" > Text Nodes< / h3 >
< p > Whitespace-delimited text string (< code > MXML_TYPE_TEXT< / code > ) nodes are created using the < a href = "#mxmlNewText" > mxmlNewText< / a > and < a href = "#mxmlNewTextf" > mxmlNewTextf< / a > functions. Each text node consists of a text string and (leading) whitespace boolean value.< / p >
< pre > < code class = "language-c" > mxml_node_t *
mxmlNewText(mxml_node_t *parent, < span class = "reserved" > bool< / span > whitespace,
< span class = "reserved" > const< / span > < span class = "reserved" > char< / span > *string);
mxml_node_t *
mxmlNewTextf(mxml_node_t *parent, < span class = "reserved" > bool< / span > whitespace,
< span class = "reserved" > const< / span > < span class = "reserved" > char< / span > *format, ...);
< / code > < / pre >
< p > The < a href = "#mxmlGetText" > mxmlGetText< / a > function retrieves the text string pointer and whitespace boolean value for a node:< / p >
< pre > < code class = "language-c" > < span class = "reserved" > const< / span > < span class = "reserved" > char< / span > *
mxmlGetText(mxml_node_t *node, < span class = "reserved" > bool< / span > *whitespace);
< / code > < / pre >
< h3 class = "title" id = "real-number-nodes" > Real Number Nodes< / h3 >
< p > Real number (< code > MXML_TYPE_REAL< / code > ) nodes are created using the < a href = "#mxmlNewReal" > mxmlNewReal< / a > function:< / p >
< pre > < code class = "language-c" > mxml_node_t *
mxmlNewReal(mxml_node_t *parent, < span class = "reserved" > double< / span > real);
< / code > < / pre >
< p > The < a href = "#mxmlGetReal" > mxmlGetReal< / a > function retrieves the real number for a node:< / p >
< pre > < code class = "language-c" > < span class = "reserved" > double< / span >
mxmlGetReal(mxml_node_t *node);
< / code > < / pre >
< h2 class = "title" id = "locating-data-in-an-xml-document" > Locating Data in an XML Document< / h2 >
< p > Mini-XML provides many functions for enumerating, searching, and indexing XML documents.< / p >
< h3 class = "title" id = "finding-nodes" > Finding Nodes< / h3 >
< p > The < a href = "#mxmlFindPath" > mxmlFindPath< / a > function finds the (first) value node under a specific element using a " path" :< / p >
< pre > < code class = "language-c" > mxml_node_t *
mxmlFindPath(mxml_node_t *node, < span class = "reserved" > const< / span > < span class = "reserved" > char< / span > *path);
< / code > < / pre >
< p > The < code > path< / code > string can contain the " *" wildcard to match a single element node in the hierarchy. For example, the following code will find the first " node" element under the " group" element, first using an explicit path and then using a wildcard:< / p >
< pre > < code class = "language-c" > mxml_node_t *value = mxmlFindPath(xml, < span class = "string" > " data/group/node" < / span > );
mxml_node_t *value = mxmlFindPath(xml, < span class = "string" > " data/*/node" < / span > );
< / code > < / pre >
< p > The < a href = "#mxmlFindElement" > mxmlFindElement< / a > function can be used to find a named element, optionally matching an attribute and value:< / p >
< pre > < code class = "language-c" > mxml_node_t *
mxmlFindElement(mxml_node_t *node, mxml_node_t *top,
< span class = "reserved" > const< / span > < span class = "reserved" > char< / span > *element, < span class = "reserved" > const< / span > < span class = "reserved" > char< / span > *attr,
< span class = "reserved" > const< / span > < span class = "reserved" > char< / span > *value, < span class = "reserved" > int< / span > descend);
< / code > < / pre >
< p > The " element" , " attr" , and " value" arguments can be passed as < code > NULL< / code > to act as wildcards, e.g.:< / p >
< pre > < code class = "language-c" > < span class = "comment" > /* Find the first " a" element */< / span >
node = mxmlFindElement(tree, tree, < span class = "string" > " a" < / span > , NULL, NULL,
MXML_DESCEND_ALL);
< span class = "comment" > /* Find the first " a" element with " href" attribute */< / span >
node = mxmlFindElement(tree, tree, < span class = "string" > " a" < / span > , < span class = "string" > " href" < / span > , NULL,
MXML_DESCEND_ALL);
< span class = "comment" > /* Find the first " a" element with " href" to a URL */< / span >
node = mxmlFindElement(tree, tree, < span class = "string" > " a" < / span > , < span class = "string" > " href" < / span > ,
< span class = "string" > " http://msweet.org/" < / span > ,
MXML_DESCEND_ALL);
< span class = "comment" > /* Find the first element with a " src" attribute*/< / span >
node = mxmlFindElement(tree, tree, NULL, < span class = "string" > " src" < / span > , NULL,
MXML_DESCEND_ALL);
< span class = "comment" > /* Find the first element with a " src" = " foo.jpg" */< / span >
node = mxmlFindElement(tree, tree, NULL, < span class = "string" > " src" < / span > , < span class = "string" > " foo.jpg" < / span > ,
MXML_DESCEND_ALL);
< / code > < / pre >
< p > You can also iterate with the same function:< / p >
< pre > < code class = "language-c" > mxml_node_t *node;
< span class = "reserved" > for< / span > (node = mxmlFindElement(tree, tree, < span class = "string" > " element" < / span > , NULL,
NULL, MXML_DESCEND_ALL);
node != NULL;
node = mxmlFindElement(node, tree, < span class = "string" > " element" < / span > , NULL,
NULL, MXML_DESCEND_ALL))
{
... < span class = "reserved" > do< / span > something ...
}
< / code > < / pre >
< p > The < code > descend< / code > argument (< code > MXML_DESCEND_ALL< / code > in the examples above) can be one of three constants:< / p >
< ul >
< li > < p > < code > MXML_DESCEND_NONE< / code > : ignore child nodes in the element hierarchy, instead using siblings (same level) or parent nodes (above) until the top (root) node is reached.< / p >
< / li >
< li > < p > < code > MXML_DESCEND_FIRST< / code > : start the search with the first child of the node, and then search siblings. You'll normally use this when iterating through direct children of a parent node, e.g. all of the " node" and " group" elements under the " ?xml" parent node in the previous example.< / p >
< / li >
< li > < p > < code > MXML_DESCEND_ALL< / code > : search child nodes first, then sibling nodes, and then parent nodes.< / p >
< / li >
< / ul >
< h3 class = "title" id = "iterating-nodes" > Iterating Nodes< / h3 >
< p > While the < a href = "#mxmlFindNode" > mxmlFindNode< / a > and < a href = "#mxmlFindPath" > mxmlFindPath< / a > functions will find a particular element node, sometimes you need to iterate over all nodes. The < a href = "#mxmlWalkNext" > mxmlWalkNext< / a > and < a href = "#mxmlWalkPrev" > mxmlWalkPrev< / a > functions can be used to iterate through the XML node tree:< / p >
< pre > < code class = "language-c" > mxml_node_t *
mxmlWalkNext(mxml_node_t *node, mxml_node_t *top,
< span class = "reserved" > int< / span > descend);
mxml_node_t *
mxmlWalkPrev(mxml_node_t *node, mxml_node_t *top,
< span class = "reserved" > int< / span > descend);
< / code > < / pre >
< p > Depending on the value of the < code > descend< / code > argument, these functions will automatically traverse child, sibling, and parent nodes until the < code > top< / code > node is reached. For example, the following code will iterate over all of the nodes in the sample XML document in the previous section:< / p >
< pre > < code class = "language-c" > mxml_node_t *node;
< span class = "reserved" > for< / span > (node = xml;
node != NULL;
node = mxmlWalkNext(node, xml, MXML_DESCEND_ALL))
{
... < span class = "reserved" > do< / span > something ...
}
< / code > < / pre >
< p > The nodes will be returned in the following order:< / p >
< pre > < code > < ?xml version=" 1.0" encoding=" utf-8" ?>
< data>
< node>
val1
< node>
val2
< node>
val3
< group>
< node>
val4
< node>
val5
< node>
val6
< node>
val7
< node>
val8
< / code > < / pre >
< h3 class = "title" id = "indexing" > Indexing< / h3 >
< p > The < a href = "#mxmlIndexNew" > mxmlIndexNew< / a > function allows you to create an index of nodes for faster searching and enumeration:< / p >
< pre > < code class = "language-c" > mxml_index_t *
mxmlIndexNew(mxml_node_t *node, < span class = "reserved" > const< / span > < span class = "reserved" > char< / span > *element,
< span class = "reserved" > const< / span > < span class = "reserved" > char< / span > *attr);
< / code > < / pre >
< p > The < code > element< / code > and < code > attr< / code > arguments control which elements are included in the index. If < code > element< / code > is not < code > NULL< / code > then only elements with the specified name are added to the index. Similarly, if < code > attr< / code > is not < code > NULL< / code > then only elements containing the specified attribute are added to the index. The nodes are sorted in the index.< / p >
< p > For example, the following code creates an index of all " id" values in an XML document:< / p >
< pre > < code class = "language-c" > mxml_index_t *ind = mxmlIndexNew(xml, NULL, < span class = "string" > " id" < / span > );
< / code > < / pre >
< p > Once the index is created, the < a href = "#mxmlIndexFind" > mxmlIndexFind< / a > function can be used to find a matching node:< / p >
< pre > < code class = "language-c" > mxml_node_t *
mxmlIndexFind(mxml_index_t *ind, < span class = "reserved" > const< / span > < span class = "reserved" > char< / span > *element,
< span class = "reserved" > const< / span > < span class = "reserved" > char< / span > *value);
< / code > < / pre >
< p > For example, the following code will find the element whose " id" string is " 42" :< / p >
< pre > < code class = "language-c" > mxml_node_t *node = mxmlIndexFind(ind, NULL, < span class = "string" > " 42" < / span > );
< / code > < / pre >
< p > Alternately, the < a href = "#mxmlIndexReset" > mxmlIndexReset< / a > and < a href = "#mxmlIndexEnum" > mxmlIndexEnum< / a > functions can be used to enumerate the nodes in the index:< / p >
< pre > < code class = "language-c" > mxml_node_t *
mxmlIndexReset(mxml_index_t *ind);
mxml_node_t *
mxmlIndexEnum(mxml_index_t *ind);
< / code > < / pre >
< p > Typically these functions will be used in a < code > for< / code > loop:< / p >
< pre > < code class = "language-c" > mxml_node_t *node;
< span class = "reserved" > for< / span > (node = mxmlIndexReset(ind);
node != NULL;
node = mxmlIndexEnum(ind))
{
... < span class = "reserved" > do< / span > something ...
}
< / code > < / pre >
< p > The < a href = "#mxmlIndexCount" > mxmlIndexCount< / a > function returns the number of nodes in the index:< / p >
< pre > < code class = "language-c" > size_t
mxmlIndexGetCount(mxml_index_t *ind);
< / code > < / pre >
< p > Finally, the < a href = "#mxmlIndexDelete" > mxmlIndexDelete< / a > function frees all memory associated with the index:< / p >
< pre > < code class = "language-c" > < span class = "reserved" > void< / span >
mxmlIndexDelete(mxml_index_t *ind);
< / code > < / pre >
< h2 class = "title" id = "custom-data-types" > Custom Data Types< / h2 >
< p > Mini-XML supports custom data types via per-thread load and save callbacks. Only a single set of callbacks can be active at any time for the current thread, however your callbacks can store additional information in order to support multiple custom data types as needed. The < code > MXML_TYPE_CUSTOM< / code > node type identifies custom data nodes.< / p >
< p > The < a href = "#mxmlGetCustom" > mxmlGetCustom< / a > function retrieves the custom value pointer for a node.< / p >
< pre > < code class = "language-c" > < span class = "reserved" > const< / span > < span class = "reserved" > void< / span > *
mxmlGetCustom(mxml_node_t *node);
< / code > < / pre >
< p > Custom (< code > MXML_TYPE_CUSTOM< / code > ) nodes are created using the < a href = "#mxmlNewCustom" > mxmlNewCustom< / a > function or using a custom per-thread load callbacks specified using the < a href = "#mxmlSetCustomHandlers" > mxmlSetCustomHandlers< / a > function:< / p >
< pre > < code class = "language-c" > < span class = "reserved" > typedef< / span > < span class = "reserved" > void< / span > (*mxml_custom_destroy_cb_t)(< span class = "reserved" > void< / span > *);
< span class = "reserved" > typedef< / span > < span class = "reserved" > bool< / span > (*mxml_custom_load_cb_t)(mxml_node_t *, < span class = "reserved" > const< / span > < span class = "reserved" > char< / span > *);
< span class = "reserved" > typedef< / span > < span class = "reserved" > char< / span > *(*mxml_custom_save_cb_t)(mxml_node_t *);
mxml_node_t *
mxmlNewCustom(mxml_node_t *parent, < span class = "reserved" > void< / span > *data,
mxml_custom_destroy_cb_t destroy);
< span class = "reserved" > int< / span >
mxmlSetCustom(mxml_node_t *node, < span class = "reserved" > void< / span > *data,
mxml_custom_destroy_cb_t destroy);
< span class = "reserved" > void< / span >
mxmlSetCustomHandlers(mxml_custom_load_cb_t load,
mxml_custom_save_cb_t save);
< / code > < / pre >
< p > The load callback receives a pointer to the current data node and a string of opaque character data from the XML source with character entities converted to the corresponding UTF-8 characters. For example, if we wanted to support a custom date/time type whose value is encoded as " yyyy-mm-ddThh:mm:ssZ" (ISO format), the load callback would look like the following:< / p >
< pre > < code class = "language-c" > < span class = "reserved" > typedef< / span > < span class = "reserved" > struct< / span >
{
< span class = "reserved" > unsigned< / span > year, < span class = "comment" > /* Year */< / span >
month, < span class = "comment" > /* Month */< / span >
day, < span class = "comment" > /* Day */< / span >
hour, < span class = "comment" > /* Hour */< / span >
minute, < span class = "comment" > /* Minute */< / span >
second; < span class = "comment" > /* Second */< / span >
time_t unix; < span class = "comment" > /* UNIX time */< / span >
} iso_date_time_t;
< span class = "reserved" > bool< / span >
load_custom(mxml_node_t *node, < span class = "reserved" > const< / span > < span class = "reserved" > char< / span > *data)
{
iso_date_time_t *dt;
< span class = "reserved" > struct< / span > tm tmdata;
< span class = "comment" > /*< / span >
< span class = "comment" > * Allocate data structure...< / span >
< span class = "comment" > */< / span >
dt = calloc(< span class = "number" > 1< / span > , < span class = "reserved" > sizeof< / span > (iso_date_time_t));
< span class = "comment" > /*< / span >
< span class = "comment" > * Try reading 6 unsigned integers from the data string...< / span >
< span class = "comment" > */< / span >
< span class = "reserved" > if< / span > (sscanf(data, < span class = "string" > " %u-%u-%uT%u:%u:%uZ" < / span > , & (dt-> year),
& (dt-> month), & (dt-> day), & (dt-> hour),
& (dt-> minute), & (dt-> second)) != < span class = "number" > 6< / span > )
{
< span class = "comment" > /*< / span >
< span class = "comment" > * Unable to read numbers, free the data structure and< / span >
< span class = "comment" > * return an error...< / span >
< span class = "comment" > */< / span >
free(dt);
< span class = "reserved" > return< / span > (< span class = "reserved" > false< / span > );
}
< span class = "comment" > /*< / span >
< span class = "comment" > * Range check values...< / span >
< span class = "comment" > */< / span >
< span class = "reserved" > if< / span > (dt-> month < < span class = "number" > 1< / span > || dt-> month > < span class = "number" > 12< / span > ||
dt-> day < < span class = "number" > 1< / span > || dt-> day > < span class = "number" > 31< / span > ||
dt-> hour < < span class = "number" > 0< / span > || dt-> hour > < span class = "number" > 23< / span > ||
dt-> minute < < span class = "number" > 0< / span > || dt-> minute > < span class = "number" > 59< / span > ||
dt-> second < < span class = "number" > 0< / span > || dt-> second > < span class = "number" > 60< / span > )
{
< span class = "comment" > /*< / span >
< span class = "comment" > * Date information is out of range...< / span >
< span class = "comment" > */< / span >
free(dt);
< span class = "reserved" > return< / span > (< span class = "reserved" > false< / span > );
}
< span class = "comment" > /*< / span >
< span class = "comment" > * Convert ISO time to UNIX time in seconds...< / span >
< span class = "comment" > */< / span >
tmdata.tm_year = dt-> year - < span class = "number" > 1900< / span > ;
tmdata.tm_mon = dt-> month - < span class = "number" > 1< / span > ;
tmdata.tm_day = dt-> day;
tmdata.tm_hour = dt-> hour;
tmdata.tm_min = dt-> minute;
tmdata.tm_sec = dt-> second;
dt-> unix = gmtime(& tmdata);
< span class = "comment" > /*< / span >
< span class = "comment" > * Assign custom node data and destroy (free) function< / span >
< span class = "comment" > * pointers...< / span >
< span class = "comment" > */< / span >
mxmlSetCustom(node, data, free);
< span class = "comment" > /*< / span >
< span class = "comment" > * Return with no errors...< / span >
< span class = "comment" > */< / span >
< span class = "reserved" > return< / span > (< span class = "reserved" > true< / span > );
}
< / code > < / pre >
< p > The function itself can return < code > true< / code > on success or < code > false< / code > if it is unable to decode the custom data or the data contains an error. Custom data nodes contain a < code > void< / code > pointer to the allocated custom data for the node and a pointer to a destructor function which will free the custom data when the node is deleted. In this example, we use the standard < code > free< / code > function since everything is contained in a single calloc'd block.< / p >
< p > The save callback receives the node pointer and returns an allocated string containing the custom data value. The following save callback could be used for our ISO date/time type:< / p >
< pre > < code class = "language-c" > < span class = "reserved" > char< / span > *
save_custom(mxml_node_t *node)
{
< span class = "reserved" > char< / span > data[< span class = "number" > 255< / span > ];
iso_date_time_t *dt;
dt = (iso_date_time_t *)mxmlGetCustom(node);
snprintf(data, < span class = "reserved" > sizeof< / span > (data),
< span class = "string" > " %04u-%02u-%02uT%02u:%02u:%02uZ" < / span > ,
dt-> year, dt-> month, dt-> day, dt-> hour,
dt-> minute, dt-> second);
< span class = "reserved" > return< / span > (strdup(data));
}
< / code > < / pre >
< p > You register the callback functions using the < a href = "#mxmlSetCustomCallbacks" > mxmlSetCustomCallbacks< / a > function:< / p >
< pre > < code class = "language-c" > mxmlSetCustomCallbacks(load_custom, save_custom);
< / code > < / pre >
< h2 class = "title" id = "sax-stream-loading-of-documents" > SAX (Stream) Loading of Documents< / h2 >
< p > Mini-XML supports an implementation of the Simple API for XML (SAX) which allows you to load and process an XML document as a stream of nodes. Aside from allowing you to process XML documents of any size, the Mini-XML implementation also allows you to retain portions of the document in memory for later processing.< / p >
< p > The mxmlLoadXxx functions support a SAX callback and associated data. The callback function receives the data pointer you supplied, the node, and an event code and returns < code > true< / code > to continue processing or < code > false< / code > to stop:< / p >
< pre > < code class = "language-c" > < span class = "reserved" > bool< / span >
sax_cb(< span class = "reserved" > void< / span > *cbdata, mxml_node_t *node,
mxml_sax_event_t event)
{
... < span class = "reserved" > do< / span > something ...
< span class = "comment" > // Continue processing...< / span >
< span class = "reserved" > return< / span > (< span class = "reserved" > true< / span > );
}
< / code > < / pre >
< p > The event will be one of the following:< / p >
< ul >
< li > < p > < code > MXML_SAX_EVENT_CDATA< / code > : CDATA was just read.< / p >
< / li >
< li > < p > < code > MXML_SAX_EVENT_COMMENT< / code > : A comment was just read.< / p >
< / li >
< li > < p > < code > MXML_SAX_EVENT_DATA< / code > : Data (integer, opaque, real, or text) was just read.< / p >
< / li >
< li > < p > < code > MXML_SAX_EVENT_DECLARATION< / code > : A declaration was just read.< / p >
< / li >
< li > < p > < code > MXML_SAX_EVENT_DIRECTIVE< / code > : A processing directive/instruction was just read.< / p >
< / li >
< li > < p > < code > MXML_SAX_EVENT_ELEMENT_CLOSE< / code > - A close element was just read (< code > < /element> < / code > )< / p >
< / li >
< li > < p > < code > MXML_SAX_EVENT_ELEMENT_OPEN< / code > - An open element was just read (< code > < element> < / code > )< / p >
< / li >
< / ul >
< p > Elements are < em > released< / em > after the close element is processed. All other nodes are released after they are processed. The SAX callback can < em > retain< / em > the node using the < a href = "#mxmlRetain" > mxmlRetain< / a > function. For example, the following SAX callback will retain all nodes, effectively simulating a normal in-memory load:< / p >
< pre > < code class = "language-c" > < span class = "reserved" > bool< / span >
sax_cb(< span class = "reserved" > void< / span > *cbdata, mxml_node_t *node, mxml_sax_event_t event)
{
< span class = "reserved" > if< / span > (event != MXML_SAX_ELEMENT_CLOSE)
mxmlRetain(node);
< span class = "reserved" > return< / span > (< span class = "reserved" > true< / span > );
}
< / code > < / pre >
< p > More typically the SAX callback will only retain a small portion of the document that is needed for post-processing. For example, the following SAX callback will retain the title and headings in an XHTML file. It also retains the (parent) elements like < code > < html> < / code > , < code > < head> < / code > , and < code > < body> < / code > , and processing directives like < code > < ?xml ... ?> < / code > and declarations like < code > < !DOCTYPE ... > < / code > :< / p >
< pre > < code class = "language-c" > < span class = "reserved" > bool< / span >
sax_cb(< span class = "reserved" > void< / span > *cbdata, mxml_node_t *node,
mxml_sax_event_t event)
{
< span class = "reserved" > if< / span > (event == MXML_SAX_ELEMENT_OPEN)
{
< span class = "comment" > /*< / span >
< span class = "comment" > * Retain headings and titles...< / span >
< span class = "comment" > */< / span >
< span class = "reserved" > const< / span > < span class = "reserved" > char< / span > *element = mxmlGetElement(node);
< span class = "reserved" > if< / span > (!strcmp(element, < span class = "string" > " html" < / span > ) ||
!strcmp(element, < span class = "string" > " head" < / span > ) ||
!strcmp(element, < span class = "string" > " title" < / span > ) ||
!strcmp(element, < span class = "string" > " body" < / span > ) ||
!strcmp(element, < span class = "string" > " h1" < / span > ) ||
!strcmp(element, < span class = "string" > " h2" < / span > ) ||
!strcmp(element, < span class = "string" > " h3" < / span > ) ||
!strcmp(element, < span class = "string" > " h4" < / span > ) ||
!strcmp(element, < span class = "string" > " h5" < / span > ) ||
!strcmp(element, < span class = "string" > " h6" < / span > ))
mxmlRetain(node);
}
< span class = "reserved" > else< / span > < span class = "reserved" > if< / span > (event == MXML_SAX_DECLARATION)
mxmlRetain(node);
< span class = "reserved" > else< / span > < span class = "reserved" > if< / span > (event == MXML_SAX_DIRECTIVE)
mxmlRetain(node);
< span class = "reserved" > else< / span > < span class = "reserved" > if< / span > (event == MXML_SAX_DATA)
{
< span class = "reserved" > if< / span > (mxmlGetRefCount(mxmlGetParent(node)) > < span class = "number" > 1< / span > )
{
< span class = "comment" > /*< / span >
< span class = "comment" > * If the parent was retained, then retain this data< / span >
< span class = "comment" > * node as well.< / span >
< span class = "comment" > */< / span >
mxmlRetain(node);
}
}
< span class = "reserved" > return< / span > (< span class = "reserved" > true< / span > );
}
< / code > < / pre >
< p > The resulting skeleton document tree can then be searched just like one loaded without the SAX callback function. For example, a filter that reads an XHTML document from stdin and then shows the title and headings in the document would look like:< / p >
< pre > < code class = "language-c" > mxml_node_t *doc, *title, *body, *heading;
doc = mxmlLoadFd(< span class = "comment" > /*top*/< / span > NULL, < span class = "comment" > /*fd*/< / span > < span class = "number" > 0< / span > ,
< span class = "comment" > /*load_cb*/< / span > NULL, < span class = "comment" > /*load_cbdata*/< / span > NULL,
sax_cb, < span class = "comment" > /*sax_cbdata*/< / span > NULL);
title = mxmlFindElement(doc, doc, < span class = "string" > " title" < / span > , NULL, NULL,
MXML_DESCEND_ALL);
< span class = "reserved" > if< / span > (title)
print_children(title);
body = mxmlFindElement(doc, doc, < span class = "string" > " body" < / span > , NULL, NULL,
MXML_DESCEND_ALL);
< span class = "reserved" > if< / span > (body)
{
< span class = "reserved" > for< / span > (heading = mxmlGetFirstChild(body);
heading;
heading = mxmlGetNextSibling(heading))
print_children(heading);
}
< / code > < / pre >
< p > The < code > print_children< / code > function is:< / p >
< pre > < code class = "language-c" > < span class = "reserved" > void< / span >
print_children(mxml_node_t *parent)
{
mxml_node_t *node;
< span class = "reserved" > const< / span > < span class = "reserved" > char< / span > *text;
< span class = "reserved" > bool< / span > whitespace;
< span class = "reserved" > for< / span > (node = mxmlGetFirstChild(parent);
node != NULL;
node = mxmlGetNextSibling(node))
{
text = mxmlGetText(node, & whitespace);
< span class = "reserved" > if< / span > (whitespace)
putchar(< span class = "string" > ' '< / span > );
fputs(text, stdout);
}
putchar(< span class = "string" > '\n'< / span > );
}
< / code > < / pre >
< h2 class = "title" id = "migrating-from-mini-xml-v3.x" > Migrating from Mini-XML v3.x< / h2 >
< p > The following incompatible API changes were made in Mini-XML v4.0:< / p >
< ul >
< li > < p > SAX events are now named < code > MXML_SAX_EVENT_foo< / code > instead of < code > MXML_SAX_foo< / code > .< / p >
< / li >
< li > < p > SAX callbacks now return a boolean value.< / p >
< / li >
< li > < p > The mxmlSAXLoadXxx functions have been removed in favor of passing the SAX callback function and data pointers to the mxmlLoadXxx functions.< / p >
< / li >
< li > < p > Node types are now named < code > MXML_TYPE_foo< / code > instead of < code > MXML_foo< / code > .< / p >
< / li >
< li > < p > Descend values are now normalized to < code > MXML_DESCEND_ALL< / code > , < code > MXML_DESCEND_FIRST< / code > , and < code > MXML_DESCEND_NONE< / code > .< / p >
< / li >
< li > < p > Functions that returned < code > 0< / code > on success and < code > -1< / code > on error now return < code > true< / code > on success and < code > false< / code > on error.< / p >
< / li >
< li > < p > CDATA nodes (" < code > < ![CDATA[...]]> < / code > " ) now have their own type (< code > MXML_TYPE_CDATA< / code > ).< / p >
< / li >
< li > < p > Comment nodes (" < code > < !-- ... --> < / code > " ) now have their own type (< code > MXML_TYPE_COMMENT< / code > ).< / p >
< / li >
< li > < p > Custom node callbacks are now set using the < a href = "#mxmlSetCustomCallbacks" > mxmlSetCustomCallbacks< / a > function instead of mxmlSetCustomHandlers.< / p >
< / li >
< li > < p > Declaration nodes (" < code > < !...> < / code > " ) now have their own type (< code > MXML_TYPE_DECLARATION< / code > ).< / p >
< / li >
< li > < p > Element attributes are now cleared with the < a href = "#mxmlElementClearAttr" > mxmlElementClearAttr< / a > function instead of mxmlElementDeleteAttr.< / p >
< / li >
< li > < p > Processing instruction/directive nodes (" < code > < ?...?> < / code > " ) now have their own type (< code > MXML_TYPE_DIRECTIVE< / code > ).< / p >
< / li >
< li > < p > Integer nodes (< code > MXML_TYPE_INTEGER< / code > ) now use the < code > long< / code > type.< / p >
< / li >
< li > < p > Text nodes (< code > MXML_TYPE_TEXT< / code > ) now use the < code > bool< / code > type for the whitespace value.< / p >
< / li >
< / ul >
< h2 class = "title" > < a id = "FUNCTIONS" > Functions< / a > < / h2 >
< h3 class = "function" > < a id = "mxmlAdd" > mxmlAdd< / a > < / h3 >
< p class = "description" > Add a node to a tree.< / p >
< p class = "code" >
void mxmlAdd(< a href = "#mxml_node_t" > mxml_node_t< / a > *parent, < a href = "#mxml_add_t" > mxml_add_t< / a > add, < a href = "#mxml_node_t" > mxml_node_t< / a > *child, < a href = "#mxml_node_t" > mxml_node_t< / a > *node);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > parent< / th >
< td class = "description" > Parent node< / td > < / tr >
< tr > < th > add< / th >
< td class = "description" > Where to add, < code > MXML_ADD_BEFORE< / code > or < code > MXML_ADD_AFTER< / code > < / td > < / tr >
< tr > < th > child< / th >
< td class = "description" > Child node for where or < code > MXML_ADD_TO_PARENT< / code > < / td > < / tr >
< tr > < th > node< / th >
< td class = "description" > Node to add< / td > < / tr >
< / tbody > < / table >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function adds the specified node < code > node< / code > to the parent. If the < code > child< / code >
argument is not < code > NULL< / code > , the new node is added before or after the specified
child depending on the value of the < code > add< / code > argument. If the < code > child< / code > argument
is < code > NULL< / code > , the new node is placed at the beginning of the child list
(< code > MXML_ADD_BEFORE< / code > ) or at the end of the child list (< code > MXML_ADD_AFTER< / code > ).< / p >
< h3 class = "function" > < a id = "mxmlDelete" > mxmlDelete< / a > < / h3 >
< p class = "description" > Delete a node and all of its children.< / p >
< p class = "code" >
void mxmlDelete(< a href = "#mxml_node_t" > mxml_node_t< / a > *node);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node to delete< / td > < / tr >
< / tbody > < / table >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function deletes the node < code > node< / code > and all of its children. If the
specified node has a parent, this function first removes the node from its
parent using the < a href = "#mxmlRemove" > < code > mxmlRemove< / code > < / a > function.< / p >
< h3 class = "function" > < a id = "mxmlElementClearAttr" > mxmlElementClearAttr< / a > < / h3 >
< p class = "description" > Remove an attribute from an element.< / p >
< p class = "code" >
void mxmlElementClearAttr(< a href = "#mxml_node_t" > mxml_node_t< / a > *node, const char *name);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Element< / td > < / tr >
< tr > < th > name< / th >
< td class = "description" > Attribute name< / td > < / tr >
< / tbody > < / table >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function removes the attribute < code > name< / code > from the element < code > node< / code > .< / p >
< h3 class = "function" > < a id = "mxmlElementGetAttr" > mxmlElementGetAttr< / a > < / h3 >
< p class = "description" > Get the value of an attribute.< / p >
< p class = "code" >
const char *mxmlElementGetAttr(< a href = "#mxml_node_t" > mxml_node_t< / a > *node, const char *name);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Element node< / td > < / tr >
< tr > < th > name< / th >
< td class = "description" > Name of attribute< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > Attribute value or < code > NULL< / code > < / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function gets the value for the attribute < code > name< / code > from the element
< code > node< / code > . < code > NULL< / code > is returned if the node is not an element or the named
attribute does not exist.< / p >
< h3 class = "function" > < a id = "mxmlElementGetAttrByIndex" > mxmlElementGetAttrByIndex< / a > < / h3 >
< p class = "description" > Get an attribute by index.< / p >
< p class = "code" >
const char *mxmlElementGetAttrByIndex(< a href = "#mxml_node_t" > mxml_node_t< / a > *node, int idx, const char **name);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node< / td > < / tr >
< tr > < th > idx< / th >
< td class = "description" > Attribute index, starting at < code > 0< / code > < / td > < / tr >
< tr > < th > name< / th >
< td class = "description" > Attribute name or < code > NULL< / code > to not return it< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > Attribute value< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function returned the Nth (< code > idx< / code > ) attribute for element < code > node< / code > . The
attribute name is optionallly returned in the < code > name< / code > argument. < code > NULL< / code > is
returned if node is not an element or the specified index is out of range.< / p >
< h3 class = "function" > < a id = "mxmlElementGetAttrCount" > mxmlElementGetAttrCount< / a > < / h3 >
< p class = "description" > Get the number of element attributes.< / p >
< p class = "code" >
size_t mxmlElementGetAttrCount(< a href = "#mxml_node_t" > mxml_node_t< / a > *node);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > Number of attributes< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function returns the number of attributes for the element < code > node< / code > . < code > 0< / code >
is returned if the node is not an element or there are no attributes for the
element.< / p >
< h3 class = "function" > < a id = "mxmlElementSetAttr" > mxmlElementSetAttr< / a > < / h3 >
< p class = "description" > Set an attribute for an element.< / p >
< p class = "code" >
void mxmlElementSetAttr(< a href = "#mxml_node_t" > mxml_node_t< / a > *node, const char *name, const char *value);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Element node< / td > < / tr >
< tr > < th > name< / th >
< td class = "description" > Name of attribute< / td > < / tr >
< tr > < th > value< / th >
< td class = "description" > Attribute value< / td > < / tr >
< / tbody > < / table >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function sets attribute < code > name< / code > to the string < code > value< / code > for the element
< code > node< / code > . If the named attribute already exists, the value of the attribute
is replaced by the new string value. The string value is copied.< / p >
< h3 class = "function" > < a id = "mxmlElementSetAttrf" > mxmlElementSetAttrf< / a > < / h3 >
< p class = "description" > Set an attribute with a formatted value.< / p >
< p class = "code" >
void mxmlElementSetAttrf(< a href = "#mxml_node_t" > mxml_node_t< / a > *node, const char *name, const char *format, ...);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Element node< / td > < / tr >
< tr > < th > name< / th >
< td class = "description" > Name of attribute< / td > < / tr >
< tr > < th > format< / th >
< td class = "description" > Printf-style attribute value< / td > < / tr >
< tr > < th > ...< / th >
< td class = "description" > Additional arguments as needed< / td > < / tr >
< / tbody > < / table >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function sets attribute < code > name< / code > to the formatted value of < code > format< / code > for
the element < code > node< / code > . If the named attribute already exists, the value of the
attribute is replaced by the new formatted string value.< / p >
< h3 class = "function" > < a id = "mxmlEntityAddCallback" > mxmlEntityAddCallback< / a > < / h3 >
< p class = "description" > Add a callback to convert entities to Unicode.< / p >
< p class = "code" >
bool mxmlEntityAddCallback(< a href = "#mxml_entity_cb_t" > mxml_entity_cb_t< / a > cb, void *cbdata);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > cb< / th >
< td class = "description" > Callback function to add< / td > < / tr >
< tr > < th > cbdata< / th >
< td class = "description" > Callback data< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > < code > true< / code > on success, < code > false< / code > on failure< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function adds a callback to the current thread that converts named
XML character entities to Unicode characters. The callback function < code > cb< / code >
accepts the callback data pointer < code > cbdata< / code > and the entity name and returns a
Unicode character value or < code > -1< / code > if the entity is not known. For example, the
following entity callback supports the " euro" entity:< br >
< br >
< code > `< / code > c
int my_entity_cb(void < em > cbdata, const char < / em > name)
{
if (!strcmp(name, " euro" ))
return (0x20ac);
else
return (-1);
}
< code > `< / code > < / p >
< h3 class = "function" > < a id = "mxmlEntityGetValue" > mxmlEntityGetValue< / a > < / h3 >
< p class = "description" > Get the character corresponding to a named entity.< / p >
< p class = "code" >
int mxmlEntityGetValue(const char *name);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > name< / th >
< td class = "description" > Entity name< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > Character value or < code > -1< / code > on error< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > The entity name can also be a numeric constant. < code > -1< / code > is returned if the
name is not known.< / p >
< h3 class = "function" > < a id = "mxmlEntityRemoveCallback" > mxmlEntityRemoveCallback< / a > < / h3 >
< p class = "description" > Remove a callback.< / p >
< p class = "code" >
void mxmlEntityRemoveCallback(< a href = "#mxml_entity_cb_t" > mxml_entity_cb_t< / a > cb);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > cb< / th >
< td class = "description" > Callback function to remove< / td > < / tr >
< / tbody > < / table >
< h3 class = "function" > < a id = "mxmlFindElement" > mxmlFindElement< / a > < / h3 >
< p class = "description" > Find the named element.< / p >
< p class = "code" >
< a href = "#mxml_node_t" > mxml_node_t< / a > *mxmlFindElement(< a href = "#mxml_node_t" > mxml_node_t< / a > *node, < a href = "#mxml_node_t" > mxml_node_t< / a > *top, const char *element, const char *attr, const char *value, < a href = "#mxml_descend_t" > mxml_descend_t< / a > descend);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Current node< / td > < / tr >
< tr > < th > top< / th >
< td class = "description" > Top node< / td > < / tr >
< tr > < th > element< / th >
< td class = "description" > Element name or < code > NULL< / code > for any< / td > < / tr >
< tr > < th > attr< / th >
< td class = "description" > Attribute name, or < code > NULL< / code > for none< / td > < / tr >
< tr > < th > value< / th >
< td class = "description" > Attribute value, or < code > NULL< / code > for any< / td > < / tr >
< tr > < th > descend< / th >
< td class = "description" > Descend into tree - < code > MXML_DESCEND_ALL< / code > , < code > MXML_DESCEND_NONE< / code > , or < code > MXML_DESCEND_FIRST< / code > < / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > Element node or < code > NULL< / code > < / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function finds the named element < code > element< / code > in XML tree < code > top< / code > starting at
node < code > node< / code > . The search is constrained by element name < code > element< / code > , attribute
name < code > attr< / code > , and attribute value < code > value< / code > - < code > NULL< / code > names or values are treated
as wildcards, so different kinds of searches can be implemented by looking
for all elements of a given name or all elements with a specific attribute.< br >
< br >
The < code > descend< / code > argument determines whether the search descends into child
nodes; normally you will use < code > MXML_DESCEND_FIRST< / code > for the initial search and
< code > MXML_DESCEND_NONE< / code > to find additional direct descendents of the node.< / p >
< h3 class = "function" > < a id = "mxmlFindPath" > mxmlFindPath< / a > < / h3 >
< p class = "description" > Find a node with the given path.< / p >
< p class = "code" >
< a href = "#mxml_node_t" > mxml_node_t< / a > *mxmlFindPath(< a href = "#mxml_node_t" > mxml_node_t< / a > *top, const char *path);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > top< / th >
< td class = "description" > Top node< / td > < / tr >
< tr > < th > path< / th >
< td class = "description" > Path to element< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > Found node or < code > NULL< / code > < / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function finds a node in XML tree < code > top< / code > using a slash-separated list of
element names in < code > path< / code > . The name " < em > " is considered a wildcard for one or
more levels of elements, for example, "foo/one/two", "bar/two/one", "< / em > /one" ,
and so forth.< br >
< br >
The first child node of the found node is returned if the given node has
children and the first child is a value node.< / p >
< h3 class = "function" > < a id = "mxmlGetCDATA" > mxmlGetCDATA< / a > < / h3 >
< p class = "description" > Get the value for a CDATA node.< / p >
< p class = "code" >
const char *mxmlGetCDATA(< a href = "#mxml_node_t" > mxml_node_t< / a > *node);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node to get< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > CDATA value or < code > NULL< / code > < / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function gets the string value of a CDATA node. < code > NULL< / code > is returned if
the node is not a CDATA element.< / p >
< h3 class = "function" > < a id = "mxmlGetComment" > mxmlGetComment< / a > < / h3 >
< p class = "description" > Get the value for a comment node.< / p >
< p class = "code" >
const char *mxmlGetComment(< a href = "#mxml_node_t" > mxml_node_t< / a > *node);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node to get< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > Comment value or < code > NULL< / code > < / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function gets the string value of a comment node. < code > NULL< / code > is returned
if the node is not a comment.< / p >
< h3 class = "function" > < a id = "mxmlGetCustom" > mxmlGetCustom< / a > < / h3 >
< p class = "description" > Get the value for a custom node.< / p >
< p class = "code" >
const void *mxmlGetCustom(< a href = "#mxml_node_t" > mxml_node_t< / a > *node);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node to get< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > Custom value or < code > NULL< / code > < / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function gets the binary value of a custom node. < code > NULL< / code > is returned if
the node (or its first child) is not a custom value node.< / p >
< h3 class = "function" > < a id = "mxmlGetDeclaration" > mxmlGetDeclaration< / a > < / h3 >
< p class = "description" > Get the value for a declaration node.< / p >
< p class = "code" >
const char *mxmlGetDeclaration(< a href = "#mxml_node_t" > mxml_node_t< / a > *node);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node to get< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > Declaraction value or < code > NULL< / code > < / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function gets the string value of a declaraction node. < code > NULL< / code > is
returned if the node is not a declaration.< / p >
< h3 class = "function" > < a id = "mxmlGetDirective" > mxmlGetDirective< / a > < / h3 >
< p class = "description" > Get the value for a processing instruction node.< / p >
< p class = "code" >
const char *mxmlGetDirective(< a href = "#mxml_node_t" > mxml_node_t< / a > *node);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node to get< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > Comment value or < code > NULL< / code > < / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function gets the string value of a processing instruction. < code > NULL< / code > is
returned if the node is not a processing instruction.< / p >
< h3 class = "function" > < a id = "mxmlGetElement" > mxmlGetElement< / a > < / h3 >
< p class = "description" > Get the name for an element node.< / p >
< p class = "code" >
const char *mxmlGetElement(< a href = "#mxml_node_t" > mxml_node_t< / a > *node);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node to get< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > Element name or < code > NULL< / code > < / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function gets the name of an element node. < code > NULL< / code > is returned if the
node is not an element node.< / p >
< h3 class = "function" > < a id = "mxmlGetFirstChild" > mxmlGetFirstChild< / a > < / h3 >
< p class = "description" > Get the first child of a node.< / p >
< p class = "code" >
< a href = "#mxml_node_t" > mxml_node_t< / a > *mxmlGetFirstChild(< a href = "#mxml_node_t" > mxml_node_t< / a > *node);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node to get< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > First child or < code > NULL< / code > < / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function gets the first child of a node. < code > NULL< / code > is returned if the node
has no children.< / p >
< h3 class = "function" > < a id = "mxmlGetInteger" > mxmlGetInteger< / a > < / h3 >
< p class = "description" > Get the integer value from the specified node or its
first child.< / p >
< p class = "code" >
long mxmlGetInteger(< a href = "#mxml_node_t" > mxml_node_t< / a > *node);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node to get< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > Integer value or < code > 0< / code > < / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function gets the value of an integer node. < code > 0< / code > is returned if the node
(or its first child) is not an integer value node.< / p >
< h3 class = "function" > < a id = "mxmlGetLastChild" > mxmlGetLastChild< / a > < / h3 >
< p class = "description" > Get the last child of a node.< / p >
< p class = "code" >
< a href = "#mxml_node_t" > mxml_node_t< / a > *mxmlGetLastChild(< a href = "#mxml_node_t" > mxml_node_t< / a > *node);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node to get< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > Last child or < code > NULL< / code > < / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function gets the last child of a node. < code > NULL< / code > is returned if the node
has no children.< / p >
< h3 class = "function" > < a id = "mxmlGetNextSibling" > mxmlGetNextSibling< / a > < / h3 >
< p class = "description" > < / p >
< p class = "code" >
< a href = "#mxml_node_t" > mxml_node_t< / a > *mxmlGetNextSibling(< a href = "#mxml_node_t" > mxml_node_t< / a > *node);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node to get< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > Get the next node for the current parent.< / p >
< p class = "discussion" > This function gets the next node for the current parent. < code > NULL< / code > is returned
if this is the last child for the current parent.< / p >
< h3 class = "function" > < a id = "mxmlGetOpaque" > mxmlGetOpaque< / a > < / h3 >
< p class = "description" > Get an opaque string value for a node or its first child.< / p >
< p class = "code" >
const char *mxmlGetOpaque(< a href = "#mxml_node_t" > mxml_node_t< / a > *node);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node to get< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > Opaque string or < code > NULL< / code > < / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function gets the string value of an opaque node. < code > NULL< / code > is returned if
the node (or its first child) is not an opaque value node.< / p >
< h3 class = "function" > < a id = "mxmlGetParent" > mxmlGetParent< / a > < / h3 >
< p class = "description" > Get the parent node.< / p >
< p class = "code" >
< a href = "#mxml_node_t" > mxml_node_t< / a > *mxmlGetParent(< a href = "#mxml_node_t" > mxml_node_t< / a > *node);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node to get< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > Parent node or < code > NULL< / code > < / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function gets the parent of a node. < code > NULL< / code > is returned for a root node.< / p >
< h3 class = "function" > < a id = "mxmlGetPrevSibling" > mxmlGetPrevSibling< / a > < / h3 >
< p class = "description" > Get the previous node for the current parent.< / p >
< p class = "code" >
< a href = "#mxml_node_t" > mxml_node_t< / a > *mxmlGetPrevSibling(< a href = "#mxml_node_t" > mxml_node_t< / a > *node);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node to get< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > Previous node or < code > NULL< / code > < / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function gets the previous node for the current parent. < code > NULL< / code > is
returned if this is the first child for the current parent.< / p >
< h3 class = "function" > < a id = "mxmlGetReal" > mxmlGetReal< / a > < / h3 >
< p class = "description" > Get the real value for a node or its first child.< / p >
< p class = "code" >
double mxmlGetReal(< a href = "#mxml_node_t" > mxml_node_t< / a > *node);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node to get< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > Real value or 0.0< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function gets the value of a real value node. < code > 0.0< / code > is returned if the
node (or its first child) is not a real value node.< / p >
< h3 class = "function" > < a id = "mxmlGetRefCount" > mxmlGetRefCount< / a > < / h3 >
< p class = "description" > Get the current reference (use) count for a node.< / p >
< p class = "code" >
size_t mxmlGetRefCount(< a href = "#mxml_node_t" > mxml_node_t< / a > *node);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > Reference count< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > The initial reference count of new nodes is 1. Use the < a href = "#mxmlRetain" > < code > mxmlRetain< / code > < / a >
and < a href = "#mxmlRelease" > < code > mxmlRelease< / code > < / a > functions to increment and decrement a node's
reference count.< / p >
< h3 class = "function" > < a id = "mxmlGetText" > mxmlGetText< / a > < / h3 >
< p class = "description" > Get the text value for a node or its first child.< / p >
< p class = "code" >
const char *mxmlGetText(< a href = "#mxml_node_t" > mxml_node_t< / a > *node, bool *whitespace);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node to get< / td > < / tr >
< tr > < th > whitespace< / th >
< td class = "description" > < code > true< / code > if string is preceded by whitespace, < code > false< / code > otherwise< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > Text string or < code > NULL< / code > < / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function gets the string and whitespace values of a text node. < code > NULL< / code >
and < code > false< / code > are returned if the node (or its first child) is not a text node.
The < code > whitespace< / code > argument can be < code > NULL< / code > if you don't want to know the
whitespace value.< br >
< br >
Note: Text nodes consist of whitespace-delimited words. You will only get
single words of text when reading an XML file with < code > MXML_TYPE_TEXT< / code > nodes.
If you want the entire string between elements in the XML file, you MUST read
the XML file with < code > MXML_TYPE_OPAQUE< / code > nodes and get the resulting strings
using the < a href = "#mxmlGetOpaque" > < code > mxmlGetOpaque< / code > < / a > function instead.< / p >
< h3 class = "function" > < a id = "mxmlGetType" > mxmlGetType< / a > < / h3 >
< p class = "description" > Get the node type.< / p >
< p class = "code" >
< a href = "#mxml_type_t" > mxml_type_t< / a > mxmlGetType(< a href = "#mxml_node_t" > mxml_node_t< / a > *node);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node to get< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > Type of node< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function gets the type of < code > node< / code > . < code > MXML_TYPE_IGNORE< / code > is returned if
< code > node< / code > is < code > NULL< / code > .< / p >
< h3 class = "function" > < a id = "mxmlGetUserData" > mxmlGetUserData< / a > < / h3 >
< p class = "description" > Get the user data pointer for a node.< / p >
< p class = "code" >
void *mxmlGetUserData(< a href = "#mxml_node_t" > mxml_node_t< / a > *node);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node to get< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > User data pointer< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function gets the user data pointer associated with < code > node< / code > .< / p >
< h3 class = "function" > < a id = "mxmlIndexDelete" > mxmlIndexDelete< / a > < / h3 >
< p class = "description" > Delete an index.< / p >
< p class = "code" >
void mxmlIndexDelete(< a href = "#mxml_index_t" > mxml_index_t< / a > *ind);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > ind< / th >
< td class = "description" > Index to delete< / td > < / tr >
< / tbody > < / table >
< h3 class = "function" > < a id = "mxmlIndexEnum" > mxmlIndexEnum< / a > < / h3 >
< p class = "description" > Return the next node in the index.< / p >
< p class = "code" >
< a href = "#mxml_node_t" > mxml_node_t< / a > *mxmlIndexEnum(< a href = "#mxml_index_t" > mxml_index_t< / a > *ind);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > ind< / th >
< td class = "description" > Index to enumerate< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > Next node or < code > NULL< / code > if there is none< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function returns the next node in index < code > ind< / code > .< br >
< br >
You should call < a href = "#mxmlIndexReset" > < code > mxmlIndexReset< / code > < / a > prior to using this function to get
the first node in the index. Nodes are returned in the sorted order of the
index.< / p >
< h3 class = "function" > < a id = "mxmlIndexFind" > mxmlIndexFind< / a > < / h3 >
< p class = "description" > Find the next matching node.< / p >
< p class = "code" >
< a href = "#mxml_node_t" > mxml_node_t< / a > *mxmlIndexFind(< a href = "#mxml_index_t" > mxml_index_t< / a > *ind, const char *element, const char *value);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > ind< / th >
< td class = "description" > Index to search< / td > < / tr >
< tr > < th > element< / th >
< td class = "description" > Element name to find, if any< / td > < / tr >
< tr > < th > value< / th >
< td class = "description" > Attribute value, if any< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > Node or < code > NULL< / code > if none found< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function finds the next matching node in index < code > ind< / code > .< br >
< br >
You should call < a href = "#mxmlIndexReset" > < code > mxmlIndexReset< / code > < / a > prior to using this function for
the first time with a particular set of < code > element< / code > and < code > value< / code >
strings. Passing < code > NULL< / code > for both < code > element< / code > and < code > value< / code > is equivalent
to calling < a href = "#mxmlIndexEnum" > < code > mxmlIndexEnum< / code > < / a > .< / p >
< h3 class = "function" > < a id = "mxmlIndexGetCount" > mxmlIndexGetCount< / a > < / h3 >
< p class = "description" > Get the number of nodes in an index.< / p >
< p class = "code" >
size_t mxmlIndexGetCount(< a href = "#mxml_index_t" > mxml_index_t< / a > *ind);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > ind< / th >
< td class = "description" > Index of nodes< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > Number of nodes in index< / p >
< h3 class = "function" > < a id = "mxmlIndexNew" > mxmlIndexNew< / a > < / h3 >
< p class = "description" > Create a new index.< / p >
< p class = "code" >
< a href = "#mxml_index_t" > mxml_index_t< / a > *mxmlIndexNew(< a href = "#mxml_node_t" > mxml_node_t< / a > *node, const char *element, const char *attr);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > XML node tree< / td > < / tr >
< tr > < th > element< / th >
< td class = "description" > Element to index or < code > NULL< / code > for all< / td > < / tr >
< tr > < th > attr< / th >
< td class = "description" > Attribute to index or < code > NULL< / code > for none< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > New index< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function creates a new index for XML tree < code > node< / code > .< br >
< br >
The index will contain all nodes that contain the named element and/or
attribute. If both < code > element< / code > and < code > attr< / code > are < code > NULL< / code > , then the index will
contain a sorted list of the elements in the node tree. Nodes are
sorted by element name and optionally by attribute value if the < code > attr< / code >
argument is not < code > NULL< / code > .< / p >
< h3 class = "function" > < a id = "mxmlIndexReset" > mxmlIndexReset< / a > < / h3 >
< p class = "description" > Reset the enumeration/find pointer in the index and
return the first node in the index.< / p >
< p class = "code" >
< a href = "#mxml_node_t" > mxml_node_t< / a > *mxmlIndexReset(< a href = "#mxml_index_t" > mxml_index_t< / a > *ind);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > ind< / th >
< td class = "description" > Index to reset< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > First node or < code > NULL< / code > if there is none< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function resets the enumeration/find pointer in index < code > ind< / code > and should
be called prior to using < a href = "#mxmlIndexEnum" > < code > mxmlIndexEnum< / code > < / a > or < a href = "#mxmlIndexFind" > < code > mxmlIndexFind< / code > < / a > for the
first time.< / p >
< h3 class = "function" > < a id = "mxmlLoadFd" > mxmlLoadFd< / a > < / h3 >
< p class = "description" > Load a file descriptor into an XML node tree.< / p >
< p class = "code" >
< a href = "#mxml_node_t" > mxml_node_t< / a > *mxmlLoadFd(< a href = "#mxml_node_t" > mxml_node_t< / a > *top, int fd, < a href = "#mxml_load_cb_t" > mxml_load_cb_t< / a > load_cb, void *load_cbdata, < a href = "#mxml_sax_cb_t" > mxml_sax_cb_t< / a > sax_cb, void *sax_cbdata);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > top< / th >
< td class = "description" > Top node< / td > < / tr >
< tr > < th > fd< / th >
< td class = "description" > File descriptor to read from< / td > < / tr >
< tr > < th > load_cb< / th >
< td class = "description" > Load callback function or < code > NULL< / code > < / td > < / tr >
< tr > < th > load_cbdata< / th >
< td class = "description" > Load callback data< / td > < / tr >
< tr > < th > sax_cb< / th >
< td class = "description" > SAX callback function or < code > NULL< / code > < code > < / code > < / td > < / tr >
< tr > < th > sax_cbdata< / th >
< td class = "description" > SAX callback data< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > First node or < code > NULL< / code > if the file could not be read.< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function loads the file descriptor < code > fd< / code > into an XML node tree. The
nodes in the specified file are added to the specified node < code > top< / code > . If < code > NULL< / code >
is provided, the XML file MUST be well-formed with a single parent processing
instruction node like < code > < ?xml version="1.0"?> < / code > at the start of the file.< br >
< br >
The load callback function < code > load_cb< / code > is called to obtain the node type that
should be used for child nodes. If < code > NULL< / code > , the < code > load_cbdata< / code > argument points
to a < code > mmd_type_t< / code > variable that specifies the value type or < code > MMD_TYPE_TEXT< / code >
if that argument is also < code > NULL< / code > .< br >
< br >
The SAX callback function < code > sax_cb< / code > and associated callback data < code > sax_cbdata< / code >
are used to enable the Simple API for XML streaming mode. The callback is
called as the XML node tree is parsed.< br >
< br >
Note: The most common programming error when using the Mini-XML library is
to load an XML file using the < code > MXML_TYPE_TEXT< / code > node type, which returns
inline text as a series of whitespace-delimited words, instead of using the
< code > MXML_TYPE_OPAQUE< / code > node type which returns the inline text as a single string
(including whitespace).< / p >
< h3 class = "function" > < a id = "mxmlLoadFile" > mxmlLoadFile< / a > < / h3 >
< p class = "description" > Load a file into an XML node tree.< / p >
< p class = "code" >
< a href = "#mxml_node_t" > mxml_node_t< / a > *mxmlLoadFile(< a href = "#mxml_node_t" > mxml_node_t< / a > *top, FILE *fp, < a href = "#mxml_load_cb_t" > mxml_load_cb_t< / a > load_cb, void *load_cbdata, < a href = "#mxml_sax_cb_t" > mxml_sax_cb_t< / a > sax_cb, void *sax_cbdata);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > top< / th >
< td class = "description" > Top node< / td > < / tr >
< tr > < th > fp< / th >
< td class = "description" > File to read from< / td > < / tr >
< tr > < th > load_cb< / th >
< td class = "description" > Load callback function or < code > NULL< / code > < / td > < / tr >
< tr > < th > load_cbdata< / th >
< td class = "description" > Load callback data< / td > < / tr >
< tr > < th > sax_cb< / th >
< td class = "description" > SAX callback function or < code > NULL< / code > < code > < / code > < / td > < / tr >
< tr > < th > sax_cbdata< / th >
< td class = "description" > SAX callback data< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > First node or < code > NULL< / code > if the file could not be read.< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function loads the < code > FILE< / code > pointer < code > fp< / code > into an XML node tree. The
nodes in the specified file are added to the specified node < code > top< / code > . If < code > NULL< / code >
is provided, the XML file MUST be well-formed with a single parent processing
instruction node like < code > < ?xml version="1.0"?> < / code > at the start of the file.< br >
< br >
The load callback function < code > load_cb< / code > is called to obtain the node type that
should be used for child nodes. If < code > NULL< / code > , the < code > load_cbdata< / code > argument points
to a < code > mmd_type_t< / code > variable that specifies the value type or < code > MMD_TYPE_TEXT< / code >
if that argument is also < code > NULL< / code > .< br >
< br >
The SAX callback function < code > sax_cb< / code > and associated callback data < code > sax_cbdata< / code >
are used to enable the Simple API for XML streaming mode. The callback is
called as the XML node tree is parsed.< br >
< br >
Note: The most common programming error when using the Mini-XML library is
to load an XML file using the < code > MXML_TYPE_TEXT< / code > node type, which returns
inline text as a series of whitespace-delimited words, instead of using the
< code > MXML_TYPE_OPAQUE< / code > node type which returns the inline text as a single string
(including whitespace).< / p >
< h3 class = "function" > < a id = "mxmlLoadFilename" > mxmlLoadFilename< / a > < / h3 >
< p class = "description" > Load a file into an XML node tree.< / p >
< p class = "code" >
< a href = "#mxml_node_t" > mxml_node_t< / a > *mxmlLoadFilename(< a href = "#mxml_node_t" > mxml_node_t< / a > *top, const char *filename, < a href = "#mxml_load_cb_t" > mxml_load_cb_t< / a > load_cb, void *load_cbdata, < a href = "#mxml_sax_cb_t" > mxml_sax_cb_t< / a > sax_cb, void *sax_cbdata);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > top< / th >
< td class = "description" > Top node< / td > < / tr >
< tr > < th > filename< / th >
< td class = "description" > File to read from< / td > < / tr >
< tr > < th > load_cb< / th >
< td class = "description" > Load callback function or < code > NULL< / code > < / td > < / tr >
< tr > < th > load_cbdata< / th >
< td class = "description" > Load callback data< / td > < / tr >
< tr > < th > sax_cb< / th >
< td class = "description" > SAX callback function or < code > NULL< / code > < code > < / code > < / td > < / tr >
< tr > < th > sax_cbdata< / th >
< td class = "description" > SAX callback data< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > First node or < code > NULL< / code > if the file could not be read.< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function loads the named file < code > filename< / code > into an XML node tree. The
nodes in the specified file are added to the specified node < code > top< / code > . If < code > NULL< / code >
is provided, the XML file MUST be well-formed with a single parent processing
instruction node like < code > < ?xml version="1.0"?> < / code > at the start of the file.< br >
< br >
The load callback function < code > load_cb< / code > is called to obtain the node type that
should be used for child nodes. If < code > NULL< / code > , the < code > load_cbdata< / code > argument points
to a < code > mmd_type_t< / code > variable that specifies the value type or < code > MMD_TYPE_TEXT< / code >
if that argument is also < code > NULL< / code > .< br >
< br >
The SAX callback function < code > sax_cb< / code > and associated callback data < code > sax_cbdata< / code >
are used to enable the Simple API for XML streaming mode. The callback is
called as the XML node tree is parsed.< br >
< br >
Note: The most common programming error when using the Mini-XML library is
to load an XML file using the < code > MXML_TYPE_TEXT< / code > node type, which returns
inline text as a series of whitespace-delimited words, instead of using the
< code > MXML_TYPE_OPAQUE< / code > node type which returns the inline text as a single string
(including whitespace).< / p >
< h3 class = "function" > < a id = "mxmlLoadIO" > mxmlLoadIO< / a > < / h3 >
< p class = "description" > Load an XML node tree using a read callback.< / p >
< p class = "code" >
< a href = "#mxml_node_t" > mxml_node_t< / a > *mxmlLoadIO(< a href = "#mxml_node_t" > mxml_node_t< / a > *top, < a href = "#mxml_read_cb_t" > mxml_read_cb_t< / a > read_cb, void *read_cbdata, < a href = "#mxml_load_cb_t" > mxml_load_cb_t< / a > load_cb, void *load_cbdata, < a href = "#mxml_sax_cb_t" > mxml_sax_cb_t< / a > sax_cb, void *sax_cbdata);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > top< / th >
< td class = "description" > Top node< / td > < / tr >
< tr > < th > read_cb< / th >
< td class = "description" > Read callback function< / td > < / tr >
< tr > < th > read_cbdata< / th >
< td class = "description" > Read callback data< / td > < / tr >
< tr > < th > load_cb< / th >
< td class = "description" > Load callback function or < code > NULL< / code > < / td > < / tr >
< tr > < th > load_cbdata< / th >
< td class = "description" > Load callback data< / td > < / tr >
< tr > < th > sax_cb< / th >
< td class = "description" > SAX callback function or < code > NULL< / code > < code > < / code > < / td > < / tr >
< tr > < th > sax_cbdata< / th >
< td class = "description" > SAX callback data< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > First node or < code > NULL< / code > if the file could not be read.< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function loads data into an XML node tree using a read callback. The
nodes in the specified file are added to the specified node < code > top< / code > . If < code > NULL< / code >
is provided, the XML file MUST be well-formed with a single parent processing
instruction node like < code > < ?xml version="1.0"?> < / code > at the start of the file.< br >
< br >
The read callback function < code > read_cb< / code > is called to read a number of bytes from
the source. The callback data pointer < code > read_cbdata< / code > is passed to the read
callback with a pointer to a buffer and the maximum number of bytes to read,
for example:< br >
< br >
< code > `< / code > c
ssize_t my_read_cb(void < em > cbdata, void < / em > buffer, size_t bytes)
{
... copy up to " bytes" bytes into buffer ...
... return the number of bytes " read" or -1 on error ...
}
< pre >
The load callback function `load_cb` is called to obtain the node type that
should be used for child nodes. If `NULL`, the `load_cbdata` argument points
to a `mmd_type_t` variable that specifies the value type or `MMD_TYPE_TEXT`
if that argument is also `NULL`.
The SAX callback function `sax_cb` and associated callback data `sax_cbdata`
are used to enable the Simple API for XML streaming mode. The callback is
called as the XML node tree is parsed.
Note: The most common programming error when using the Mini-XML library is
to load an XML file using the `MXML_TYPE_TEXT` node type, which returns
inline text as a series of whitespace-delimited words, instead of using the
`MXML_TYPE_OPAQUE` node type which returns the inline text as a single string
(including whitespace).< / pre >
< / p >
< h3 class = "function" > < a id = "mxmlLoadString" > mxmlLoadString< / a > < / h3 >
< p class = "description" > Load a string into an XML node tree.< / p >
< p class = "code" >
< a href = "#mxml_node_t" > mxml_node_t< / a > *mxmlLoadString(< a href = "#mxml_node_t" > mxml_node_t< / a > *top, const char *s, < a href = "#mxml_load_cb_t" > mxml_load_cb_t< / a > load_cb, void *load_cbdata, < a href = "#mxml_sax_cb_t" > mxml_sax_cb_t< / a > sax_cb, void *sax_cbdata);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > top< / th >
< td class = "description" > Top node< / td > < / tr >
< tr > < th > s< / th >
< td class = "description" > String to load< / td > < / tr >
< tr > < th > load_cb< / th >
< td class = "description" > Load callback function or < code > NULL< / code > < / td > < / tr >
< tr > < th > load_cbdata< / th >
< td class = "description" > Load callback data< / td > < / tr >
< tr > < th > sax_cb< / th >
< td class = "description" > SAX callback function or < code > NULL< / code > < code > < / code > < / td > < / tr >
< tr > < th > sax_cbdata< / th >
< td class = "description" > SAX callback data< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > First node or < code > NULL< / code > if the string has errors.< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function loads the string into an XML node tree. The nodes in the
specified file are added to the specified node < code > top< / code > . If < code > NULL< / code > is provided,
the XML file MUST be well-formed with a single parent processing instruction
node like < code > < ?xml version="1.0"?> < / code > at the start of the file.< br >
< br >
The load callback function < code > load_cb< / code > is called to obtain the node type that
should be used for child nodes. If < code > NULL< / code > , the < code > load_cbdata< / code > argument points
to a < code > mmd_type_t< / code > variable that specifies the value type or < code > MMD_TYPE_TEXT< / code >
if that argument is also < code > NULL< / code > .< br >
< br >
The SAX callback function < code > sax_cb< / code > and associated callback data < code > sax_cbdata< / code >
are used to enable the Simple API for XML streaming mode. The callback is
called as the XML node tree is parsed.< br >
< br >
Note: The most common programming error when using the Mini-XML library is
to load an XML file using the < code > MXML_TYPE_TEXT< / code > node type, which returns
inline text as a series of whitespace-delimited words, instead of using the
< code > MXML_TYPE_OPAQUE< / code > node type which returns the inline text as a single string
(including whitespace).< / p >
< h3 class = "function" > < a id = "mxmlNewCDATA" > mxmlNewCDATA< / a > < / h3 >
< p class = "description" > Create a new CDATA node.< / p >
< p class = "code" >
< a href = "#mxml_node_t" > mxml_node_t< / a > *mxmlNewCDATA(< a href = "#mxml_node_t" > mxml_node_t< / a > *parent, const char *data);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > parent< / th >
< td class = "description" > Parent node or < code > MXML_NO_PARENT< / code > < / td > < / tr >
< tr > < th > data< / th >
< td class = "description" > Data string< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > New node< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > The new CDATA node is added to the end of the specified parent's child
list. The constant < code > MXML_NO_PARENT< / code > can be used to specify that the new
CDATA node has no parent. The data string must be nul-terminated and
is copied into the new node. CDATA nodes currently use the
< code > MXML_TYPE_ELEMENT< / code > type.< / p >
< h3 class = "function" > < a id = "mxmlNewCDATAf" > mxmlNewCDATAf< / a > < / h3 >
< p class = "description" > Create a new formatted CDATA node.< / p >
< p class = "code" >
< a href = "#mxml_node_t" > mxml_node_t< / a > *mxmlNewCDATAf(< a href = "#mxml_node_t" > mxml_node_t< / a > *parent, const char *format, ...);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > parent< / th >
< td class = "description" > Parent node or < code > MXML_NO_PARENT< / code > < / td > < / tr >
< tr > < th > format< / th >
< td class = "description" > Printf-style format string< / td > < / tr >
< tr > < th > ...< / th >
< td class = "description" > Additional args as needed< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > New node< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > The new CDATA node is added to the end of the specified parent's
child list. The constant < code > MXML_NO_PARENT< / code > can be used to specify that
the new opaque string node has no parent. The format string must be
nul-terminated and is formatted into the new node.< / p >
< h3 class = "function" > < a id = "mxmlNewComment" > mxmlNewComment< / a > < / h3 >
< p class = "description" > Create a new comment node.< / p >
< p class = "code" >
< a href = "#mxml_node_t" > mxml_node_t< / a > *mxmlNewComment(< a href = "#mxml_node_t" > mxml_node_t< / a > *parent, const char *comment);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > parent< / th >
< td class = "description" > Parent node or < code > MXML_NO_PARENT< / code > < / td > < / tr >
< tr > < th > comment< / th >
< td class = "description" > Comment string< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > New node< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > The new comment node is added to the end of the specified parent's child
list. The constant < code > MXML_NO_PARENT< / code > can be used to specify that the new
comment node has no parent. The comment string must be nul-terminated and
is copied into the new node.< / p >
< h3 class = "function" > < a id = "mxmlNewCommentf" > mxmlNewCommentf< / a > < / h3 >
< p class = "description" > Create a new formatted comment string node.< / p >
< p class = "code" >
< a href = "#mxml_node_t" > mxml_node_t< / a > *mxmlNewCommentf(< a href = "#mxml_node_t" > mxml_node_t< / a > *parent, const char *format, ...);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > parent< / th >
< td class = "description" > Parent node or < code > MXML_NO_PARENT< / code > < / td > < / tr >
< tr > < th > format< / th >
< td class = "description" > Printf-style format string< / td > < / tr >
< tr > < th > ...< / th >
< td class = "description" > Additional args as needed< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > New node< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > The new comment string node is added to the end of the specified parent's
child list. The constant < code > MXML_NO_PARENT< / code > can be used to specify that
the new opaque string node has no parent. The format string must be
nul-terminated and is formatted into the new node.< / p >
< h3 class = "function" > < a id = "mxmlNewCustom" > mxmlNewCustom< / a > < / h3 >
< p class = "description" > Create a new custom data node.< / p >
< p class = "code" >
< a href = "#mxml_node_t" > mxml_node_t< / a > *mxmlNewCustom(< a href = "#mxml_node_t" > mxml_node_t< / a > *parent, void *data, < a href = "#mxml_custom_destroy_cb_t" > mxml_custom_destroy_cb_t< / a > destroy);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > parent< / th >
< td class = "description" > Parent node or < code > MXML_NO_PARENT< / code > < / td > < / tr >
< tr > < th > data< / th >
< td class = "description" > Pointer to data< / td > < / tr >
< tr > < th > destroy< / th >
< td class = "description" > Function to destroy data< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > New node< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > The new custom node is added to the end of the specified parent's child
list. The constant < code > MXML_NO_PARENT< / code > can be used to specify that the new
element node has no parent. < code > NULL< / code > can be passed when the data in the
node is not dynamically allocated or is separately managed.< / p >
< h3 class = "function" > < a id = "mxmlNewDeclaration" > mxmlNewDeclaration< / a > < / h3 >
< p class = "description" > Create a new declaraction node.< / p >
< p class = "code" >
< a href = "#mxml_node_t" > mxml_node_t< / a > *mxmlNewDeclaration(< a href = "#mxml_node_t" > mxml_node_t< / a > *parent, const char *declaration);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > parent< / th >
< td class = "description" > Parent node or < code > MXML_NO_PARENT< / code > < / td > < / tr >
< tr > < th > declaration< / th >
< td class = "description" > Declaration string< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > New node< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > The new declaration node is added to the end of the specified parent's child
list. The constant < code > MXML_NO_PARENT< / code > can be used to specify that the new
declaration node has no parent. The declaration string must be nul-
terminated and is copied into the new node.< / p >
< h3 class = "function" > < a id = "mxmlNewDeclarationf" > mxmlNewDeclarationf< / a > < / h3 >
< p class = "description" > Create a new formatted declaration node.< / p >
< p class = "code" >
< a href = "#mxml_node_t" > mxml_node_t< / a > *mxmlNewDeclarationf(< a href = "#mxml_node_t" > mxml_node_t< / a > *parent, const char *format, ...);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > parent< / th >
< td class = "description" > Parent node or < code > MXML_NO_PARENT< / code > < / td > < / tr >
< tr > < th > format< / th >
< td class = "description" > Printf-style format string< / td > < / tr >
< tr > < th > ...< / th >
< td class = "description" > Additional args as needed< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > New node< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > The new declaration node is added to the end of the specified parent's
child list. The constant < code > MXML_NO_PARENT< / code > can be used to specify that
the new opaque string node has no parent. The format string must be
nul-terminated and is formatted into the new node.< / p >
< h3 class = "function" > < a id = "mxmlNewDirective" > mxmlNewDirective< / a > < / h3 >
< p class = "description" > Create a new processing instruction node.< / p >
< p class = "code" >
< a href = "#mxml_node_t" > mxml_node_t< / a > *mxmlNewDirective(< a href = "#mxml_node_t" > mxml_node_t< / a > *parent, const char *directive);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > parent< / th >
< td class = "description" > Parent node or < code > MXML_NO_PARENT< / code > < / td > < / tr >
< tr > < th > directive< / th >
< td class = "description" > Directive string< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > New node< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > The new processing instruction node is added to the end of the specified
parent's child list. The constant < code > MXML_NO_PARENT< / code > can be used to specify
that the new processing instruction node has no parent. The data string must
be nul-terminated and is copied into the new node.< / p >
< h3 class = "function" > < a id = "mxmlNewDirectivef" > mxmlNewDirectivef< / a > < / h3 >
< p class = "description" > Create a new formatted processing instruction node.< / p >
< p class = "code" >
< a href = "#mxml_node_t" > mxml_node_t< / a > *mxmlNewDirectivef(< a href = "#mxml_node_t" > mxml_node_t< / a > *parent, const char *format, ...);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > parent< / th >
< td class = "description" > Parent node or < code > MXML_NO_PARENT< / code > < / td > < / tr >
< tr > < th > format< / th >
< td class = "description" > Printf-style format string< / td > < / tr >
< tr > < th > ...< / th >
< td class = "description" > Additional args as needed< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > New node< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > The new processing instruction node is added to the end of the specified parent's
child list. The constant < code > MXML_NO_PARENT< / code > can be used to specify that
the new opaque string node has no parent. The format string must be
nul-terminated and is formatted into the new node.< / p >
< h3 class = "function" > < a id = "mxmlNewElement" > mxmlNewElement< / a > < / h3 >
< p class = "description" > Create a new element node.< / p >
< p class = "code" >
< a href = "#mxml_node_t" > mxml_node_t< / a > *mxmlNewElement(< a href = "#mxml_node_t" > mxml_node_t< / a > *parent, const char *name);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > parent< / th >
< td class = "description" > Parent node or < code > MXML_NO_PARENT< / code > < / td > < / tr >
< tr > < th > name< / th >
< td class = "description" > Name of element< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > New node< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > The new element node is added to the end of the specified parent's child
list. The constant < code > MXML_NO_PARENT< / code > can be used to specify that the new
element node has no parent.< / p >
< h3 class = "function" > < a id = "mxmlNewInteger" > mxmlNewInteger< / a > < / h3 >
< p class = "description" > Create a new integer node.< / p >
< p class = "code" >
< a href = "#mxml_node_t" > mxml_node_t< / a > *mxmlNewInteger(< a href = "#mxml_node_t" > mxml_node_t< / a > *parent, long integer);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > parent< / th >
< td class = "description" > Parent node or < code > MXML_NO_PARENT< / code > < / td > < / tr >
< tr > < th > integer< / th >
< td class = "description" > Integer value< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > New node< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > The new integer node is added to the end of the specified parent's child
list. The constant < code > MXML_NO_PARENT< / code > can be used to specify that the new
integer node has no parent.< / p >
< h3 class = "function" > < a id = "mxmlNewOpaque" > mxmlNewOpaque< / a > < / h3 >
< p class = "description" > Create a new opaque string.< / p >
< p class = "code" >
< a href = "#mxml_node_t" > mxml_node_t< / a > *mxmlNewOpaque(< a href = "#mxml_node_t" > mxml_node_t< / a > *parent, const char *opaque);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > parent< / th >
< td class = "description" > Parent node or < code > MXML_NO_PARENT< / code > < / td > < / tr >
< tr > < th > opaque< / th >
< td class = "description" > Opaque string< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > New node< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > The new opaque string node is added to the end of the specified parent's
child list. The constant < code > MXML_NO_PARENT< / code > can be used to specify that
the new opaque string node has no parent. The opaque string must be nul-
terminated and is copied into the new node.< / p >
< h3 class = "function" > < a id = "mxmlNewOpaquef" > mxmlNewOpaquef< / a > < / h3 >
< p class = "description" > Create a new formatted opaque string node.< / p >
< p class = "code" >
< a href = "#mxml_node_t" > mxml_node_t< / a > *mxmlNewOpaquef(< a href = "#mxml_node_t" > mxml_node_t< / a > *parent, const char *format, ...);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > parent< / th >
< td class = "description" > Parent node or < code > MXML_NO_PARENT< / code > < / td > < / tr >
< tr > < th > format< / th >
< td class = "description" > Printf-style format string< / td > < / tr >
< tr > < th > ...< / th >
< td class = "description" > Additional args as needed< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > New node< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > The new opaque string node is added to the end of the specified parent's
child list. The constant < code > MXML_NO_PARENT< / code > can be used to specify that
the new opaque string node has no parent. The format string must be
nul-terminated and is formatted into the new node.< / p >
< h3 class = "function" > < a id = "mxmlNewReal" > mxmlNewReal< / a > < / h3 >
< p class = "description" > Create a new real number node.< / p >
< p class = "code" >
< a href = "#mxml_node_t" > mxml_node_t< / a > *mxmlNewReal(< a href = "#mxml_node_t" > mxml_node_t< / a > *parent, double real);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > parent< / th >
< td class = "description" > Parent node or < code > MXML_NO_PARENT< / code > < / td > < / tr >
< tr > < th > real< / th >
< td class = "description" > Real number value< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > New node< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > The new real number node is added to the end of the specified parent's
child list. The constant < code > MXML_NO_PARENT< / code > can be used to specify that
the new real number node has no parent.< / p >
< h3 class = "function" > < a id = "mxmlNewText" > mxmlNewText< / a > < / h3 >
< p class = "description" > Create a new text fragment node.< / p >
< p class = "code" >
< a href = "#mxml_node_t" > mxml_node_t< / a > *mxmlNewText(< a href = "#mxml_node_t" > mxml_node_t< / a > *parent, bool whitespace, const char *string);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > parent< / th >
< td class = "description" > Parent node or < code > MXML_NO_PARENT< / code > < / td > < / tr >
< tr > < th > whitespace< / th >
< td class = "description" > < code > true< / code > = leading whitespace, < code > false< / code > = no whitespace< / td > < / tr >
< tr > < th > string< / th >
< td class = "description" > String< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > New node< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > The new text node is added to the end of the specified parent's child
list. The constant < code > MXML_NO_PARENT< / code > can be used to specify that the new
text node has no parent. The whitespace parameter is used to specify
whether leading whitespace is present before the node. The text
string must be nul-terminated and is copied into the new node.< / p >
< h3 class = "function" > < a id = "mxmlNewTextf" > mxmlNewTextf< / a > < / h3 >
< p class = "description" > Create a new formatted text fragment node.< / p >
< p class = "code" >
< a href = "#mxml_node_t" > mxml_node_t< / a > *mxmlNewTextf(< a href = "#mxml_node_t" > mxml_node_t< / a > *parent, bool whitespace, const char *format, ...);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > parent< / th >
< td class = "description" > Parent node or < code > MXML_NO_PARENT< / code > < / td > < / tr >
< tr > < th > whitespace< / th >
< td class = "description" > < code > true< / code > = leading whitespace, < code > false< / code > = no whitespace< / td > < / tr >
< tr > < th > format< / th >
< td class = "description" > Printf-style format string< / td > < / tr >
< tr > < th > ...< / th >
< td class = "description" > Additional args as needed< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > New node< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > The new text node is added to the end of the specified parent's child
list. The constant < code > MXML_NO_PARENT< / code > can be used to specify that the new
text node has no parent. The whitespace parameter is used to specify
whether leading whitespace is present before the node. The format
string must be nul-terminated and is formatted into the new node.< / p >
< h3 class = "function" > < a id = "mxmlNewXML" > mxmlNewXML< / a > < / h3 >
< p class = "description" > Create a new XML document tree.< / p >
< p class = "code" >
< a href = "#mxml_node_t" > mxml_node_t< / a > *mxmlNewXML(const char *version);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > version< / th >
< td class = "description" > Version number to use< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > New ?xml node< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > The " version" argument specifies the version number to put in the
?xml directive node. If < code > NULL< / code > , version " 1.0" is assumed.< / p >
< h3 class = "function" > < a id = "mxmlRelease" > mxmlRelease< / a > < / h3 >
< p class = "description" > Release a node.< / p >
< p class = "code" >
int mxmlRelease(< a href = "#mxml_node_t" > mxml_node_t< / a > *node);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > New reference count< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > When the reference count reaches zero, the node (and any children)
is deleted via < a href = "#mxmlDelete" > < code > mxmlDelete< / code > < / a > .< / p >
< h3 class = "function" > < a id = "mxmlRemove" > mxmlRemove< / a > < / h3 >
< p class = "description" > Remove a node from its parent.< / p >
< p class = "code" >
void mxmlRemove(< a href = "#mxml_node_t" > mxml_node_t< / a > *node);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node to remove< / td > < / tr >
< / tbody > < / table >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function does not free memory used by the node - use < a href = "#mxmlDelete" > < code > mxmlDelete< / code > < / a >
for that. This function does nothing if the node has no parent.< / p >
< h3 class = "function" > < a id = "mxmlRetain" > mxmlRetain< / a > < / h3 >
< p class = "description" > Retain a node.< / p >
< p class = "code" >
int mxmlRetain(< a href = "#mxml_node_t" > mxml_node_t< / a > *node);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > New reference count< / p >
< h3 class = "function" > < a id = "mxmlSaveAllocString" > mxmlSaveAllocString< / a > < / h3 >
< p class = "description" > Save an XML tree to an allocated string.< / p >
< p class = "code" >
char *mxmlSaveAllocString(< a href = "#mxml_node_t" > mxml_node_t< / a > *node, < a href = "#mxml_save_cb_t" > mxml_save_cb_t< / a > save_cb, void *save_cbdata);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node to write< / td > < / tr >
< tr > < th > save_cb< / th >
< td class = "description" > Whitespace callback function< / td > < / tr >
< tr > < th > save_cbdata< / th >
< td class = "description" > Whitespace callback data< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > Allocated string or < code > NULL< / code > < / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function saves the XML tree < code > node< / code > to an allocated string. The string
should be freed using < code > free< / code > (or the string free callback set using
< a href = "#mxmlSetStringCallbacks" > < code > mxmlSetStringCallbacks< / code > < / a > ) when you are done with it.< br >
< br >
< code > NULL< / code > is returned if the node would produce an empty string or if the string
cannot be allocated.< br >
< br >
The callback function < code > save_cb< / code > specifies a function that returns a
whitespace string or < code > NULL< / code > before and after each element. The function
receives the callback data pointer < code > save_cbdata< / code > , the < code > mxml_node_t< / code > pointer,
and a " when" value indicating where the whitespace is being added, for
example:< br >
< br >
< code > `< / code > c
const char < em > my_save_cb(void < / em > cbdata, mxml_node_t *node, mxml_ws_t when)
{
if (when == MXML_WS_BEFORE_OPEN || when == MXML_WS_AFTER_CLOSE)
return (" n" );
else
return (NULL);
}
< code > `< / code > < / p >
< h3 class = "function" > < a id = "mxmlSaveFd" > mxmlSaveFd< / a > < / h3 >
< p class = "description" > Save an XML tree to a file descriptor.< / p >
< p class = "code" >
bool mxmlSaveFd(< a href = "#mxml_node_t" > mxml_node_t< / a > *node, int fd, < a href = "#mxml_save_cb_t" > mxml_save_cb_t< / a > save_cb, void *save_cbdata);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node to write< / td > < / tr >
< tr > < th > fd< / th >
< td class = "description" > File descriptor to write to< / td > < / tr >
< tr > < th > save_cb< / th >
< td class = "description" > Whitespace callback function< / td > < / tr >
< tr > < th > save_cbdata< / th >
< td class = "description" > Whitespace callback data< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > < code > true< / code > on success, < code > false< / code > on error.< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function saves the XML tree < code > node< / code > to a file descriptor.< br >
< br >
The callback function < code > save_cb< / code > specifies a function that returns a
whitespace string or < code > NULL< / code > before and after each element. The function
receives the callback data pointer < code > save_cbdata< / code > , the < code > mxml_node_t< / code > pointer,
and a " when" value indicating where the whitespace is being added, for
example:< br >
< br >
< code > `< / code > c
const char < em > my_save_cb(void < / em > cbdata, mxml_node_t *node, mxml_ws_t when)
{
if (when == MXML_WS_BEFORE_OPEN || when == MXML_WS_AFTER_CLOSE)
return (" n" );
else
return (NULL);
}
< code > `< / code > < / p >
< h3 class = "function" > < a id = "mxmlSaveFile" > mxmlSaveFile< / a > < / h3 >
< p class = "description" > Save an XML tree to a file.< / p >
< p class = "code" >
bool mxmlSaveFile(< a href = "#mxml_node_t" > mxml_node_t< / a > *node, FILE *fp, < a href = "#mxml_save_cb_t" > mxml_save_cb_t< / a > save_cb, void *save_cbdata);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node to write< / td > < / tr >
< tr > < th > fp< / th >
< td class = "description" > File to write to< / td > < / tr >
< tr > < th > save_cb< / th >
< td class = "description" > Whitespace callback function< / td > < / tr >
< tr > < th > save_cbdata< / th >
< td class = "description" > Whitespace callback data< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > < code > true< / code > on success, < code > false< / code > on error.< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function saves the XML tree < code > node< / code > to a stdio < code > FILE< / code > .< br >
< br >
The callback function < code > save_cb< / code > specifies a function that returns a
whitespace string or < code > NULL< / code > before and after each element. The function
receives the callback data pointer < code > save_cbdata< / code > , the < code > mxml_node_t< / code > pointer,
and a " when" value indicating where the whitespace is being added, for
example:< br >
< br >
< code > `< / code > c
const char < em > my_save_cb(void < / em > cbdata, mxml_node_t *node, mxml_ws_t when)
{
if (when == MXML_WS_BEFORE_OPEN || when == MXML_WS_AFTER_CLOSE)
return (" n" );
else
return (NULL);
}
< code > `< / code > < / p >
< h3 class = "function" > < a id = "mxmlSaveFilename" > mxmlSaveFilename< / a > < / h3 >
< p class = "description" > Save an XML tree to a file.< / p >
< p class = "code" >
bool mxmlSaveFilename(< a href = "#mxml_node_t" > mxml_node_t< / a > *node, const char *filename, < a href = "#mxml_save_cb_t" > mxml_save_cb_t< / a > save_cb, void *save_cbdata);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node to write< / td > < / tr >
< tr > < th > filename< / th >
< td class = "description" > File to write to< / td > < / tr >
< tr > < th > save_cb< / th >
< td class = "description" > Whitespace callback function< / td > < / tr >
< tr > < th > save_cbdata< / th >
< td class = "description" > Whitespace callback data< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > < code > true< / code > on success, < code > false< / code > on error.< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function saves the XML tree < code > node< / code > to a named file.< br >
< br >
The callback function < code > save_cb< / code > specifies a function that returns a
whitespace string or < code > NULL< / code > before and after each element. The function
receives the callback data pointer < code > save_cbdata< / code > , the < code > mxml_node_t< / code > pointer,
and a " when" value indicating where the whitespace is being added, for
example:< br >
< br >
< code > `< / code > c
const char < em > my_save_cb(void < / em > cbdata, mxml_node_t *node, mxml_ws_t when)
{
if (when == MXML_WS_BEFORE_OPEN || when == MXML_WS_AFTER_CLOSE)
return (" n" );
else
return (NULL);
}
< code > `< / code > < / p >
< h3 class = "function" > < a id = "mxmlSaveIO" > mxmlSaveIO< / a > < / h3 >
< p class = "description" > Save an XML tree using a callback.< / p >
< p class = "code" >
bool mxmlSaveIO(< a href = "#mxml_node_t" > mxml_node_t< / a > *node, < a href = "#mxml_write_cb_t" > mxml_write_cb_t< / a > write_cb, void *write_cbdata, < a href = "#mxml_save_cb_t" > mxml_save_cb_t< / a > save_cb, void *save_cbdata);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node to write< / td > < / tr >
< tr > < th > write_cb< / th >
< td class = "description" > Write callback function< / td > < / tr >
< tr > < th > write_cbdata< / th >
< td class = "description" > Write callback data< / td > < / tr >
< tr > < th > save_cb< / th >
< td class = "description" > Whitespace callback function< / td > < / tr >
< tr > < th > save_cbdata< / th >
< td class = "description" > Whitespace callback data< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > < code > true< / code > on success, < code > false< / code > on error.< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function saves the XML tree < code > node< / code > using a write callback function
< code > write_cb< / code > . The write callback is called with the callback data pointer
< code > write_cbdata< / code > , a buffer pointer, and the number of bytes to write, for
example:< br >
< br >
< code > `< / code > c
ssize_t my_write_cb(void < em > cbdata, const void < / em > buffer, size_t bytes)
{
... write/copy bytes from buffer to the output ...
... return the number of bytes written/copied or -1 on error ...
}
< pre >
The callback function `save_cb` specifies a function that returns a
whitespace string or `NULL` before and after each element. The function
receives the callback data pointer `save_cbdata`, the `mxml_node_t` pointer,
and a " when" value indicating where the whitespace is being added, for
example:
```c
const char *my_save_cb(void *cbdata, mxml_node_t *node, mxml_ws_t when)
{
if (when == MXML_WS_BEFORE_OPEN || when == MXML_WS_AFTER_CLOSE)
return (" n" );
else
return (NULL);
}
< / pre >
< / p >
< h3 class = "function" > < a id = "mxmlSaveString" > mxmlSaveString< / a > < / h3 >
< p class = "description" > Save an XML node tree to a string.< / p >
< p class = "code" >
size_t mxmlSaveString(< a href = "#mxml_node_t" > mxml_node_t< / a > *node, char *buffer, size_t bufsize, < a href = "#mxml_save_cb_t" > mxml_save_cb_t< / a > save_cb, void *save_cbdata);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node to write< / td > < / tr >
< tr > < th > buffer< / th >
< td class = "description" > String buffer< / td > < / tr >
< tr > < th > bufsize< / th >
< td class = "description" > Size of string buffer< / td > < / tr >
< tr > < th > save_cb< / th >
< td class = "description" > Whitespace callback function< / td > < / tr >
< tr > < th > save_cbdata< / th >
< td class = "description" > Whitespace callback function< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > Size of string< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function saves the XML tree < code > node< / code > to a string buffer.< br >
< br >
The callback function < code > save_cb< / code > specifies a function that returns a
whitespace string or < code > NULL< / code > before and after each element. The function
receives the callback data pointer < code > save_cbdata< / code > , the < code > mxml_node_t< / code > pointer,
and a " when" value indicating where the whitespace is being added, for
example:< br >
< br >
< code > `< / code > c
const char < em > my_save_cb(void < / em > cbdata, mxml_node_t *node, mxml_ws_t when)
{
if (when == MXML_WS_BEFORE_OPEN || when == MXML_WS_AFTER_CLOSE)
return (" n" );
else
return (NULL);
}
< code > `< / code > < / p >
< h3 class = "function" > < a id = "mxmlSetCDATA" > mxmlSetCDATA< / a > < / h3 >
< p class = "description" > Set the data for a CDATA node.< / p >
< p class = "code" >
bool mxmlSetCDATA(< a href = "#mxml_node_t" > mxml_node_t< / a > *node, const char *data);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node to set< / td > < / tr >
< tr > < th > data< / th >
< td class = "description" > New data string< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > < code > true< / code > on success, < code > false< / code > on failure< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function sets the value string for a CDATA node. The node is not
changed if it (or its first child) is not a CDATA node.< / p >
< h3 class = "function" > < a id = "mxmlSetCDATAf" > mxmlSetCDATAf< / a > < / h3 >
< p class = "description" > Set the data for a CDATA to a formatted string.< / p >
< p class = "code" >
bool mxmlSetCDATAf(< a href = "#mxml_node_t" > mxml_node_t< / a > *node, const char *format, ...);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node< / td > < / tr >
< tr > < th > format< / th >
< td class = "description" > < code > printf< / code > -style format string< / td > < / tr >
< tr > < th > ...< / th >
< td class = "description" > Additional arguments as needed< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > < code > true< / code > on success, < code > false< / code > on failure< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function sets the formatted string value of a CDATA node. The node is
not changed if it (or its first child) is not a CDATA node.< / p >
< h3 class = "function" > < a id = "mxmlSetComment" > mxmlSetComment< / a > < / h3 >
< p class = "description" > Set a comment to a literal string.< / p >
< p class = "code" >
bool mxmlSetComment(< a href = "#mxml_node_t" > mxml_node_t< / a > *node, const char *comment);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node< / td > < / tr >
< tr > < th > comment< / th >
< td class = "description" > Literal string< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > < code > true< / code > on success, < code > false< / code > on failure< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function sets the string value of a comment node.< / p >
< h3 class = "function" > < a id = "mxmlSetCommentf" > mxmlSetCommentf< / a > < / h3 >
< p class = "description" > Set a comment to a formatted string.< / p >
< p class = "code" >
bool mxmlSetCommentf(< a href = "#mxml_node_t" > mxml_node_t< / a > *node, const char *format, ...);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node< / td > < / tr >
< tr > < th > format< / th >
< td class = "description" > < code > printf< / code > -style format string< / td > < / tr >
< tr > < th > ...< / th >
< td class = "description" > Additional arguments as needed< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > < code > true< / code > on success, < code > false< / code > on failure< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function sets the formatted string value of a comment node.< / p >
< h3 class = "function" > < a id = "mxmlSetCustom" > mxmlSetCustom< / a > < / h3 >
< p class = "description" > Set the data and destructor of a custom data node.< / p >
< p class = "code" >
bool mxmlSetCustom(< a href = "#mxml_node_t" > mxml_node_t< / a > *node, void *data, < a href = "#mxml_custom_destroy_cb_t" > mxml_custom_destroy_cb_t< / a > destroy_cb);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node to set< / td > < / tr >
< tr > < th > data< / th >
< td class = "description" > New data pointer< / td > < / tr >
< tr > < th > destroy_cb< / th >
< td class = "description" > New destructor function< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > < code > true< / code > on success, < code > false< / code > on failure< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function sets the data pointer < code > data< / code > and destructor callback
< code > destroy_cb< / code > of a custom data node. The node is not changed if it (or its
first child) is not a custom node.< / p >
< h3 class = "function" > < a id = "mxmlSetDeclaration" > mxmlSetDeclaration< / a > < / h3 >
< p class = "description" > Set a declaration to a literal string.< / p >
< p class = "code" >
bool mxmlSetDeclaration(< a href = "#mxml_node_t" > mxml_node_t< / a > *node, const char *declaration);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node< / td > < / tr >
< tr > < th > declaration< / th >
< td class = "description" > Literal string< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > < code > true< / code > on success, < code > false< / code > on failure< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function sets the string value of a declaration node.< / p >
< h3 class = "function" > < a id = "mxmlSetDeclarationf" > mxmlSetDeclarationf< / a > < / h3 >
< p class = "description" > Set a declaration to a formatted string.< / p >
< p class = "code" >
bool mxmlSetDeclarationf(< a href = "#mxml_node_t" > mxml_node_t< / a > *node, const char *format, ...);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node< / td > < / tr >
< tr > < th > format< / th >
< td class = "description" > < code > printf< / code > -style format string< / td > < / tr >
< tr > < th > ...< / th >
< td class = "description" > Additional arguments as needed< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > < code > true< / code > on success, < code > false< / code > on failure< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function sets the formatted string value of a declaration node.< / p >
< h3 class = "function" > < a id = "mxmlSetDirective" > mxmlSetDirective< / a > < / h3 >
< p class = "description" > Set a processing instruction to a literal string.< / p >
< p class = "code" >
bool mxmlSetDirective(< a href = "#mxml_node_t" > mxml_node_t< / a > *node, const char *directive);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node< / td > < / tr >
< tr > < th > directive< / th >
< td class = "description" > Literal string< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > < code > true< / code > on success, < code > false< / code > on failure< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function sets the string value of a processing instruction node.< / p >
< h3 class = "function" > < a id = "mxmlSetDirectivef" > mxmlSetDirectivef< / a > < / h3 >
< p class = "description" > Set a processing instruction to a formatted string.< / p >
< p class = "code" >
bool mxmlSetDirectivef(< a href = "#mxml_node_t" > mxml_node_t< / a > *node, const char *format, ...);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node< / td > < / tr >
< tr > < th > format< / th >
< td class = "description" > < code > printf< / code > -style format string< / td > < / tr >
< tr > < th > ...< / th >
< td class = "description" > Additional arguments as needed< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > < code > true< / code > on success, < code > false< / code > on failure< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function sets the formatted string value of a processing instruction
node.< / p >
< h3 class = "function" > < a id = "mxmlSetElement" > mxmlSetElement< / a > < / h3 >
< p class = "description" > Set the name of an element node.< / p >
< p class = "code" >
bool mxmlSetElement(< a href = "#mxml_node_t" > mxml_node_t< / a > *node, const char *name);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node to set< / td > < / tr >
< tr > < th > name< / th >
< td class = "description" > New name string< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > < code > true< / code > on success, < code > false< / code > on failure< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function sets the name of an element node. The node is not changed if
it is not an element node.< / p >
< h3 class = "function" > < a id = "mxmlSetInteger" > mxmlSetInteger< / a > < / h3 >
< p class = "description" > Set the value of an integer node.< / p >
< p class = "code" >
bool mxmlSetInteger(< a href = "#mxml_node_t" > mxml_node_t< / a > *node, long integer);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node to set< / td > < / tr >
< tr > < th > integer< / th >
< td class = "description" > Integer value< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > < code > true< / code > on success, < code > false< / code > on failure< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function sets the value of an integer node. The node is not changed if
it (or its first child) is not an integer node.< / p >
< h3 class = "function" > < a id = "mxmlSetOpaque" > mxmlSetOpaque< / a > < / h3 >
< p class = "description" > Set the value of an opaque node.< / p >
< p class = "code" >
bool mxmlSetOpaque(< a href = "#mxml_node_t" > mxml_node_t< / a > *node, const char *opaque);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node to set< / td > < / tr >
< tr > < th > opaque< / th >
< td class = "description" > Opaque string< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > < code > true< / code > on success, < code > false< / code > on failure< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function sets the string value of an opaque node. The node is not
changed if it (or its first child) is not an opaque node.< / p >
< h3 class = "function" > < a id = "mxmlSetOpaquef" > mxmlSetOpaquef< / a > < / h3 >
< p class = "description" > Set the value of an opaque string node to a formatted string.< / p >
< p class = "code" >
bool mxmlSetOpaquef(< a href = "#mxml_node_t" > mxml_node_t< / a > *node, const char *format, ...);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node to set< / td > < / tr >
< tr > < th > format< / th >
< td class = "description" > Printf-style format string< / td > < / tr >
< tr > < th > ...< / th >
< td class = "description" > Additional arguments as needed< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > < code > true< / code > on success, < code > false< / code > on failure< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function sets the formatted string value of an opaque node. The node is
not changed if it (or its first child) is not an opaque node.< / p >
< h3 class = "function" > < a id = "mxmlSetReal" > mxmlSetReal< / a > < / h3 >
< p class = "description" > Set the value of a real value node.< / p >
< p class = "code" >
bool mxmlSetReal(< a href = "#mxml_node_t" > mxml_node_t< / a > *node, double real);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node to set< / td > < / tr >
< tr > < th > real< / th >
< td class = "description" > Real number value< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > < code > true< / code > on success, < code > false< / code > on failure< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function sets the value of a real value node. The node is not changed
if it (or its first child) is not a real value node.< / p >
< h3 class = "function" > < a id = "mxmlSetText" > mxmlSetText< / a > < / h3 >
< p class = "description" > Set the value of a text node.< / p >
< p class = "code" >
bool mxmlSetText(< a href = "#mxml_node_t" > mxml_node_t< / a > *node, bool whitespace, const char *string);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node to set< / td > < / tr >
< tr > < th > whitespace< / th >
< td class = "description" > < code > true< / code > = leading whitespace, < code > false< / code > = no whitespace< / td > < / tr >
< tr > < th > string< / th >
< td class = "description" > String< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > < code > true< / code > on success, < code > false< / code > on failure< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function sets the string and whitespace values of a text node. The node
is not changed if it (or its first child) is not a text node.< / p >
< h3 class = "function" > < a id = "mxmlSetTextf" > mxmlSetTextf< / a > < / h3 >
< p class = "description" > Set the value of a text node to a formatted string.< / p >
< p class = "code" >
bool mxmlSetTextf(< a href = "#mxml_node_t" > mxml_node_t< / a > *node, bool whitespace, const char *format, ...);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node to set< / td > < / tr >
< tr > < th > whitespace< / th >
< td class = "description" > < code > true< / code > = leading whitespace, < code > false< / code > = no whitespace< / td > < / tr >
< tr > < th > format< / th >
< td class = "description" > Printf-style format string< / td > < / tr >
< tr > < th > ...< / th >
< td class = "description" > Additional arguments as needed< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > < code > true< / code > on success, < code > false< / code > on failure< / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function sets the formatted string and whitespace values of a text node.
The node is not changed if it (or its first child) is not a text node.< / p >
< h3 class = "function" > < a id = "mxmlSetUserData" > mxmlSetUserData< / a > < / h3 >
< p class = "description" > Set the user data pointer for a node.< / p >
< p class = "code" >
bool mxmlSetUserData(< a href = "#mxml_node_t" > mxml_node_t< / a > *node, void *data);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Node to set< / td > < / tr >
< tr > < th > data< / th >
< td class = "description" > User data pointer< / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > < code > true< / code > on success, < code > false< / code > on failure< / p >
< h3 class = "function" > < a id = "mxmlSetWrapMargin" > mxmlSetWrapMargin< / a > < / h3 >
< p class = "description" > Set the wrap margin when saving XML data.< / p >
< p class = "code" >
void mxmlSetWrapMargin(int column);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > column< / th >
< td class = "description" > Column for wrapping, 0 to disable wrapping< / td > < / tr >
< / tbody > < / table >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function sets the wrap margin used when saving XML data for the current
thread. Wrapping is disabled when < code > column< / code > is < code > 0< / code > .< / p >
< h3 class = "function" > < a id = "mxmlWalkNext" > mxmlWalkNext< / a > < / h3 >
< p class = "description" > Walk to the next logical node in the tree.< / p >
< p class = "code" >
< a href = "#mxml_node_t" > mxml_node_t< / a > *mxmlWalkNext(< a href = "#mxml_node_t" > mxml_node_t< / a > *node, < a href = "#mxml_node_t" > mxml_node_t< / a > *top, < a href = "#mxml_descend_t" > mxml_descend_t< / a > descend);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Current node< / td > < / tr >
< tr > < th > top< / th >
< td class = "description" > Top node< / td > < / tr >
< tr > < th > descend< / th >
< td class = "description" > Descend into tree - < code > MXML_DESCEND_ALL< / code > , < code > MXML_DESCEND_NONE< / code > , or < code > MXML_DESCEND_FIRST< / code > < / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > Next node or < code > NULL< / code > < / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function walks to the next logical node in the tree. The < code > descend< / code >
argument controls whether the first child is considered to be the next node.
The < code > top< / code > argument constrains the walk to that node's children.< / p >
< h3 class = "function" > < a id = "mxmlWalkPrev" > mxmlWalkPrev< / a > < / h3 >
< p class = "description" > Walk to the previous logical node in the tree.< / p >
< p class = "code" >
< a href = "#mxml_node_t" > mxml_node_t< / a > *mxmlWalkPrev(< a href = "#mxml_node_t" > mxml_node_t< / a > *node, < a href = "#mxml_node_t" > mxml_node_t< / a > *top, < a href = "#mxml_descend_t" > mxml_descend_t< / a > descend);< / p >
< h4 class = "parameters" > Parameters< / h4 >
< table class = "list" > < tbody >
< tr > < th > node< / th >
< td class = "description" > Current node< / td > < / tr >
< tr > < th > top< / th >
< td class = "description" > Top node< / td > < / tr >
< tr > < th > descend< / th >
< td class = "description" > Descend into tree - < code > MXML_DESCEND_ALL< / code > , < code > MXML_DESCEND_NONE< / code > , or < code > MXML_DESCEND_FIRST< / code > < / td > < / tr >
< / tbody > < / table >
< h4 class = "returnvalue" > Return Value< / h4 >
< p class = "description" > Previous node or < code > NULL< / code > < / p >
< h4 class = "discussion" > Discussion< / h4 >
< p class = "discussion" > This function walks to the previous logical node in the tree. The < code > descend< / code >
argument controls whether the first child is considered to be the next node.
The < code > top< / code > argument constrains the walk to that node's children.< / p >
< h2 class = "title" > < a id = "TYPES" > Data Types< / a > < / h2 >
< h3 class = "typedef" > < a id = "mxml_add_t" > mxml_add_t< / a > < / h3 >
< p class = "description" > < a href = "#mxmlAdd" > < code > mxmlAdd< / code > < / a > add values< / p >
< p class = "code" >
typedef enum < a href = "#mxml_add_e" > mxml_add_e< / a > mxml_add_t;
< / p >
< h3 class = "typedef" > < a id = "mxml_custom_destroy_cb_t" > mxml_custom_destroy_cb_t< / a > < / h3 >
< p class = "description" > Custom data destructor< / p >
< p class = "code" >
typedef void (*mxml_custom_destroy_cb_t)(void *);
< / p >
< h3 class = "typedef" > < a id = "mxml_custom_load_cb_t" > mxml_custom_load_cb_t< / a > < / h3 >
< p class = "description" > Custom data load callback function< / p >
< p class = "code" >
typedef bool (*mxml_custom_load_cb_t)(void *cbdata < a href = "#mxml_node_t" > mxml_node_t< / a > *node const char *s);
< / p >
< h3 class = "typedef" > < a id = "mxml_custom_save_cb_t" > mxml_custom_save_cb_t< / a > < / h3 >
< p class = "description" > Custom data save callback function< / p >
< p class = "code" >
typedef char *(*mxml_custom_save_cb_t)(void *cbdata < a href = "#mxml_node_t" > mxml_node_t< / a > *node);
< / p >
< h3 class = "typedef" > < a id = "mxml_descend_t" > mxml_descend_t< / a > < / h3 >
< p class = "description" > < a href = "#mxmlFindElement" > < code > mxmlFindElement< / code > < / a > , < a href = "#mxmlWalkNext" > < code > mxmlWalkNext< / code > < / a > , and < a href = "#mxmlWalkPrev" > < code > mxmlWalkPrev< / code > < / a > descend values< / p >
< p class = "code" >
typedef enum < a href = "#mxml_descend_e" > mxml_descend_e< / a > mxml_descend_t;
< / p >
< h3 class = "typedef" > < a id = "mxml_entity_cb_t" > mxml_entity_cb_t< / a > < / h3 >
< p class = "description" > Entity callback function< / p >
< p class = "code" >
typedef int (*mxml_entity_cb_t)(void *cbdata const char *name);
< / p >
< h3 class = "typedef" > < a id = "mxml_error_cb_t" > mxml_error_cb_t< / a > < / h3 >
< p class = "description" > Error callback function< / p >
< p class = "code" >
typedef void (*mxml_error_cb_t)(void *cbdata const char *message);
< / p >
< h3 class = "typedef" > < a id = "mxml_index_t" > mxml_index_t< / a > < / h3 >
< p class = "description" > An XML node index.< / p >
< p class = "code" >
typedef struct _mxml_index_s mxml_index_t;
< / p >
< h3 class = "typedef" > < a id = "mxml_load_cb_t" > mxml_load_cb_t< / a > < / h3 >
< p class = "description" > Load callback function< / p >
< p class = "code" >
typedef < a href = "#mxml_type_t" > mxml_type_t< / a > (*mxml_load_cb_t)(void *cbdata < a href = "#mxml_node_t" > mxml_node_t< / a > *node);
< / p >
< h3 class = "typedef" > < a id = "mxml_node_t" > mxml_node_t< / a > < / h3 >
< p class = "description" > An XML node.< / p >
< p class = "code" >
typedef struct _mxml_node_s mxml_node_t;
< / p >
< h3 class = "typedef" > < a id = "mxml_read_cb_t" > mxml_read_cb_t< / a > < / h3 >
< p class = "description" > Read callback function< / p >
< p class = "code" >
typedef ssize_t (*mxml_read_cb_t)(void *cbdata void *buffer size_t bytes);
< / p >
< h3 class = "typedef" > < a id = "mxml_save_cb_t" > mxml_save_cb_t< / a > < / h3 >
< p class = "description" > Save callback function< / p >
< p class = "code" >
typedef const char *(*mxml_save_cb_t)(void *cbdata < a href = "#mxml_node_t" > mxml_node_t< / a > *node < a href = "#mxml_ws_t" > mxml_ws_t< / a > when);
< / p >
< h3 class = "typedef" > < a id = "mxml_sax_cb_t" > mxml_sax_cb_t< / a > < / h3 >
< p class = "description" > SAX callback function< / p >
< p class = "code" >
typedef bool (*mxml_sax_cb_t)(void *cbdata < a href = "#mxml_node_t" > mxml_node_t< / a > *node < a href = "#mxml_sax_event_t" > mxml_sax_event_t< / a > event);
< / p >
< h3 class = "typedef" > < a id = "mxml_sax_event_t" > mxml_sax_event_t< / a > < / h3 >
< p class = "description" > SAX event type.< / p >
< p class = "code" >
typedef enum < a href = "#mxml_sax_event_e" > mxml_sax_event_e< / a > mxml_sax_event_t;
< / p >
< h3 class = "typedef" > < a id = "mxml_strcopy_cb_t" > mxml_strcopy_cb_t< / a > < / h3 >
< p class = "description" > String copy/allocation callback< / p >
< p class = "code" >
typedef char *(*mxml_strcopy_cb_t)(void *cbdata const char *s);
< / p >
< h3 class = "typedef" > < a id = "mxml_strfree_cb_t" > mxml_strfree_cb_t< / a > < / h3 >
< p class = "description" > String free callback< / p >
< p class = "code" >
typedef void (*mxml_strfree_cb_t)(void *cbdata char *s);
< / p >
< h3 class = "typedef" > < a id = "mxml_type_t" > mxml_type_t< / a > < / h3 >
< p class = "description" > The XML node type.< / p >
< p class = "code" >
typedef enum < a href = "#mxml_type_e" > mxml_type_e< / a > mxml_type_t;
< / p >
< h3 class = "typedef" > < a id = "mxml_write_cb_t" > mxml_write_cb_t< / a > < / h3 >
< p class = "description" > Write callback function< / p >
< p class = "code" >
typedef ssize_t (*mxml_write_cb_t)(void *cbdata const void *buffer size_t bytes);
< / p >
< h3 class = "typedef" > < a id = "mxml_ws_t" > mxml_ws_t< / a > < / h3 >
< p class = "description" > Whitespace periods< / p >
< p class = "code" >
typedef enum < a href = "#mxml_ws_e" > mxml_ws_e< / a > mxml_ws_t;
< / p >
< h2 class = "title" > < a id = "ENUMERATIONS" > Constants< / a > < / h2 >
< h3 class = "enumeration" > < a id = "mxml_add_e" > mxml_add_e< / a > < / h3 >
< p class = "description" > < a href = "#mxmlAdd" > < code > mxmlAdd< / code > < / a > add values< / p >
< h4 class = "constants" > Constants< / h4 >
< table class = "list" > < tbody >
< tr > < th > MXML_ADD_AFTER < / th > < td class = "description" > Add node after specified node< / td > < / tr >
< tr > < th > MXML_ADD_BEFORE < / th > < td class = "description" > Add node before specified node< / td > < / tr >
< / tbody > < / table >
< h3 class = "enumeration" > < a id = "mxml_descend_e" > mxml_descend_e< / a > < / h3 >
< p class = "description" > < a href = "#mxmlFindElement" > < code > mxmlFindElement< / code > < / a > , < a href = "#mxmlWalkNext" > < code > mxmlWalkNext< / code > < / a > , and < a href = "#mxmlWalkPrev" > < code > mxmlWalkPrev< / code > < / a > descend values< / p >
< h4 class = "constants" > Constants< / h4 >
< table class = "list" > < tbody >
< tr > < th > MXML_DESCEND_ALL < / th > < td class = "description" > Descend when finding/walking< / td > < / tr >
< tr > < th > MXML_DESCEND_FIRST < / th > < td class = "description" > Descend for first find< / td > < / tr >
< tr > < th > MXML_DESCEND_NONE < / th > < td class = "description" > Don't descend when finding/walking< / td > < / tr >
< / tbody > < / table >
< h3 class = "enumeration" > < a id = "mxml_sax_event_e" > mxml_sax_event_e< / a > < / h3 >
< p class = "description" > SAX event type.< / p >
< h4 class = "constants" > Constants< / h4 >
< table class = "list" > < tbody >
< tr > < th > MXML_SAX_EVENT_CDATA < / th > < td class = "description" > CDATA node< / td > < / tr >
< tr > < th > MXML_SAX_EVENT_COMMENT < / th > < td class = "description" > Comment node< / td > < / tr >
< tr > < th > MXML_SAX_EVENT_DATA < / th > < td class = "description" > Data node< / td > < / tr >
< tr > < th > MXML_SAX_EVENT_DECLARATION < / th > < td class = "description" > Declaration node< / td > < / tr >
< tr > < th > MXML_SAX_EVENT_DIRECTIVE < / th > < td class = "description" > Processing instruction node< / td > < / tr >
< tr > < th > MXML_SAX_EVENT_ELEMENT_CLOSE < / th > < td class = "description" > Element closed< / td > < / tr >
< tr > < th > MXML_SAX_EVENT_ELEMENT_OPEN < / th > < td class = "description" > Element opened< / td > < / tr >
< / tbody > < / table >
< h3 class = "enumeration" > < a id = "mxml_type_e" > mxml_type_e< / a > < / h3 >
< p class = "description" > The XML node type.< / p >
< h4 class = "constants" > Constants< / h4 >
< table class = "list" > < tbody >
< tr > < th > MXML_TYPE_CDATA < / th > < td class = "description" > CDATA value (" < a href = "[CDATA[...]]" > [CDATA[...]]< / a > " )< / td > < / tr >
< tr > < th > MXML_TYPE_COMMENT < / th > < td class = "description" > Comment (" < a href = "!--...--" > !--...--< / a > " )< / td > < / tr >
< tr > < th > MXML_TYPE_CUSTOM < / th > < td class = "description" > Custom data< / td > < / tr >
< tr > < th > MXML_TYPE_DECLARATION < / th > < td class = "description" > Declaration (" < a href = "!..." > !...< / a > " )< / td > < / tr >
< tr > < th > MXML_TYPE_DIRECTIVE < / th > < td class = "description" > Processing instruction (" < a href = "?...?" > ?...?< / a > " )< / td > < / tr >
< tr > < th > MXML_TYPE_ELEMENT < / th > < td class = "description" > XML element with attributes< / td > < / tr >
< tr > < th > MXML_TYPE_IGNORE < / th > < td class = "description" > Ignore/throw away node< / td > < / tr >
< tr > < th > MXML_TYPE_INTEGER < / th > < td class = "description" > Integer value< / td > < / tr >
< tr > < th > MXML_TYPE_OPAQUE < / th > < td class = "description" > Opaque string< / td > < / tr >
< tr > < th > MXML_TYPE_REAL < / th > < td class = "description" > Real value< / td > < / tr >
< tr > < th > MXML_TYPE_TEXT < / th > < td class = "description" > Text fragment< / td > < / tr >
< / tbody > < / table >
< h3 class = "enumeration" > < a id = "mxml_ws_e" > mxml_ws_e< / a > < / h3 >
< p class = "description" > Whitespace periods< / p >
< h4 class = "constants" > Constants< / h4 >
< table class = "list" > < tbody >
< tr > < th > MXML_WS_AFTER_CLOSE < / th > < td class = "description" > Callback for after close tag< / td > < / tr >
< tr > < th > MXML_WS_AFTER_OPEN < / th > < td class = "description" > Callback for after open tag< / td > < / tr >
< tr > < th > MXML_WS_BEFORE_CLOSE < / th > < td class = "description" > Callback for before close tag< / td > < / tr >
< tr > < th > MXML_WS_BEFORE_OPEN < / th > < td class = "description" > Callback for before open tag< / td > < / tr >
< / tbody > < / table >
< / div >
< / body >
< / html >
