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Update quick API overview in README.

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Michael R Sweet 2024-03-16 22:31:17 -04:00
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README.md
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@ -87,46 +87,29 @@ Mini-XML provides a single header file which you include:
Nodes (elements, comments, processing directives, integers, opaque strings, real
numbers, and text strings) are represented by `mxml_node_t` objects. New nodes
can be created using the `mxmlNewElement()`, `mxmlNewInteger()`,
`mxmlNewOpaque()`, `mxmlNewReal()`, and `mxmlNewText()` functions. Only
elements can have child nodes, and the top node must be the "?xml" processing
directive.
can be created using the mxmlNewComment, mxmlNewCustom, mxmlNewDeclaration,
mxmlNewDirective, mxmlNewElement, mxmlNewInteger, mxmlNewOpaque, mxmlNewReal,
and mxmlNewText functions. The top node must be the "?xml ...?" processing
instruction.
You load an XML file using the `mxmlLoadFile()` function:
You load an XML file using the mxmlLoadFilename function:
FILE *fp;
mxml_node_t *tree;
fp = fopen("filename.xml", "r");
tree = mxmlLoadFile(NULL, fp, MXML_OPAQUE_CALLBACK);
fclose(fp);
tree = mxmlLoadFilename(NULL, "filename.xml",
/*load_cb*/NULL, /*load_cbdata*/NULL);
Similarly, you save an XML file using the `mxmlSaveFile()` function:
Similarly, you save an XML file using the mxmlSaveFilename function:
FILE *fp;
mxml_node_t *tree;
fp = fopen("filename.xml", "w");
mxmlSaveFile(tree, fp, MXML_NO_CALLBACK);
fclose(fp);
mxmlSaveFilename(tree, "filename.xml",
/*load_cb*/NULL, /*load_cbdata*/NULL);
The `mxmlLoadString()`, `mxmlSaveAllocString()`, and `mxmlSaveString()`
functions load XML node trees from and save XML node trees to strings:
There are variations of these functions for loading from or saving to file
descriptors, `FILE` pointers, strings, and IO callbacks.
char buffer[8192];
char *ptr;
mxml_node_t *tree;
...
tree = mxmlLoadString(NULL, buffer, MXML_OPAQUE_CALLBACK);
...
mxmlSaveString(tree, buffer, sizeof(buffer), MXML_NO_CALLBACK);
...
ptr = mxmlSaveAllocString(tree, MXML_NO_CALLBACK);
You can find a named element/node using the `mxmlFindElement()` function:
You can find a named element/node using the mxmlFindElement function:
mxml_node_t *node = mxmlFindElement(tree, tree, "name", "attr",
"value", MXML_DESCEND);
@ -165,13 +148,13 @@ You can also iterate with the same function:
... do something ...
}
The `mxmlFindPath()` function finds the (first) value node under a specific
The mxmlFindPath function finds the (first) value node under a specific
element using an XPath:
mxml_node_t *value = mxmlFindPath(tree, "path/to/*/foo/bar");
The `mxmlGetInteger()`, `mxmlGetOpaque()`, `mxmlGetReal()`, and
`mxmlGetText()` functions retrieve the corresponding value from a node:
The mxmlGetInteger, mxmlGetOpaque, mxmlGetReal, and mxmlGetText functions
retrieve the corresponding value from a node:
mxml_node_t *node;
@ -184,9 +167,9 @@ The `mxmlGetInteger()`, `mxmlGetOpaque()`, `mxmlGetReal()`, and
int whitespacevalue;
const char *textvalue = mxmlGetText(node, &whitespacevalue);
Finally, once you are done with the XML data, use the `mxmlDelete()`
function to recursively free the memory that is used for a particular node
or the entire tree:
Finally, once you are done with the XML data, use the mxmlDelete function to
recursively free the memory that is used for a particular node or the entire
tree:
mxmlDelete(tree);
@ -209,7 +192,7 @@ files "LICENSE" and "NOTICE" for more information.
> Note: The exception listed in the NOTICE file only applies when linking
> against GPL2/LGPL2-only software. Some Apache License purists have objected
> to linking Apa/che Licensed code against Mini-XML with these exceptions on the
> to linking Apache Licensed code against Mini-XML with these exceptions on the
> grounds that it makes Mini-XML somehow incompatible with the Apache License.
> For that reason, people wishing to retain their Apache License purity may
> omit the exception from their copy of Mini-XML.