mirror of
https://github.com/michaelrsweet/mxml.git
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755 lines
18 KiB
C
755 lines
18 KiB
C
//
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// Node set functions for Mini-XML, a small XML file parsing library.
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//
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// https://www.msweet.org/mxml
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//
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// Copyright © 2003-2024 by Michael R Sweet.
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//
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// Licensed under Apache License v2.0. See the file "LICENSE" for more
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// information.
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//
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#include "mxml-private.h"
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//
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// 'mxmlSetCDATA()' - Set the data for a CDATA node.
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//
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// This function sets the value string for a CDATA node. The node is not
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// changed if it (or its first child) is not a CDATA node.
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//
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bool // O - `true` on success, `false` on failure
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mxmlSetCDATA(mxml_node_t *node, // I - Node to set
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const char *data) // I - New data string
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{
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char *s; // New element name
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// Range check input...
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if (node && node->type == MXML_TYPE_ELEMENT && node->child && node->child->type == MXML_TYPE_CDATA)
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node = node->child;
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if (!node || node->type != MXML_TYPE_CDATA)
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{
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_mxml_error("Wrong node type.");
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return (false);
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}
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else if (!data)
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{
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_mxml_error("NULL string not allowed.");
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return (false);
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}
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if (data == node->value.cdata)
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{
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// Don't change the value...
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return (true);
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}
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// Allocate the new value, free any old element value, and set the new value...
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if ((s = _mxml_strcopy(data)) == NULL)
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{
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_mxml_error("Unable to allocate memory for CDATA.");
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return (false);
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}
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_mxml_strfree(node->value.cdata);
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node->value.cdata = s;
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return (true);
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}
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//
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// 'mxmlSetCDATAf()' - Set the data for a CDATA to a formatted string.
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//
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// This function sets the formatted string value of a CDATA node. The node is
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// not changed if it (or its first child) is not a CDATA node.
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//
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bool // O - `true` on success, `false` on failure
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mxmlSetCDATAf(mxml_node_t *node, // I - Node
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const char *format, // I - `printf`-style format string
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...) // I - Additional arguments as needed
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{
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va_list ap; // Pointer to arguments
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char buffer[16384]; // Format buffer
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char *s; // Temporary string
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// Range check input...
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if (node && node->type == MXML_TYPE_ELEMENT && node->child && node->child->type == MXML_TYPE_CDATA)
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node = node->child;
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if (!node || node->type != MXML_TYPE_CDATA)
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{
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_mxml_error("Wrong node type.");
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return (false);
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}
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else if (!format)
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{
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_mxml_error("NULL string not allowed.");
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return (false);
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}
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// Format the new string, free any old string value, and set the new value...
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va_start(ap, format);
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vsnprintf(buffer, sizeof(buffer), format, ap);
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va_end(ap);
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if ((s = _mxml_strcopy(buffer)) == NULL)
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{
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_mxml_error("Unable to allocate memory for CDATA string.");
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return (false);
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}
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_mxml_strfree(node->value.cdata);
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node->value.cdata = s;
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return (true);
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}
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//
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// 'mxmlSetComment()' - Set a comment to a literal string.
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//
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// This function sets the string value of a comment node.
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//
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bool // O - `true` on success, `false` on failure
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mxmlSetComment(mxml_node_t *node, // I - Node
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const char *comment) // I - Literal string
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{
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char *s; // New string
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// Range check input...
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if (node && node->type == MXML_TYPE_ELEMENT && node->child && node->child->type == MXML_TYPE_COMMENT)
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node = node->child;
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if (!node || node->type != MXML_TYPE_COMMENT)
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{
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_mxml_error("Wrong node type.");
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return (false);
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}
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else if (!comment)
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{
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_mxml_error("NULL comment not allowed.");
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return (false);
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}
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if (comment == node->value.comment)
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return (true);
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// Free any old string value and set the new value...
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if ((s = _mxml_strcopy(comment)) == NULL)
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{
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_mxml_error("Unable to allocate memory for comment string.");
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return (false);
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}
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_mxml_strfree(node->value.comment);
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node->value.comment = s;
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return (true);
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}
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//
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// 'mxmlSetCommentf()' - Set a comment to a formatted string.
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//
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// This function sets the formatted string value of a comment node.
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//
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bool // O - `true` on success, `false` on failure
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mxmlSetCommentf(mxml_node_t *node, // I - Node
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const char *format, // I - `printf`-style format string
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...) // I - Additional arguments as needed
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{
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va_list ap; // Pointer to arguments
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char buffer[16384]; // Format buffer
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char *s; // Temporary string
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// Range check input...
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if (node && node->type == MXML_TYPE_ELEMENT && node->child && node->child->type == MXML_TYPE_COMMENT)
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node = node->child;
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if (!node || node->type != MXML_TYPE_COMMENT)
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{
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_mxml_error("Wrong node type.");
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return (false);
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}
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else if (!format)
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{
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_mxml_error("NULL string not allowed.");
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return (false);
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}
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// Format the new string, free any old string value, and set the new value...
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va_start(ap, format);
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vsnprintf(buffer, sizeof(buffer), format, ap);
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va_end(ap);
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if ((s = _mxml_strcopy(buffer)) == NULL)
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{
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_mxml_error("Unable to allocate memory for comment string.");
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return (false);
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}
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_mxml_strfree(node->value.comment);
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node->value.comment = s;
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return (true);
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}
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//
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// 'mxmlSetCustom()' - Set the data and destructor of a custom data node.
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//
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// This function sets the data pointer `data` and destructor callback
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// `destroy_cb` of a custom data node. The node is not changed if it (or its
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// first child) is not a custom node.
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//
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bool // O - `true` on success, `false` on failure
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mxmlSetCustom(
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mxml_node_t *node, // I - Node to set
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void *data, // I - New data pointer
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mxml_custom_destroy_cb_t destroy_cb)// I - New destructor function
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{
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// Range check input...
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if (node && node->type == MXML_TYPE_ELEMENT && node->child && node->child->type == MXML_TYPE_CUSTOM)
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node = node->child;
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if (!node || node->type != MXML_TYPE_CUSTOM)
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{
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_mxml_error("Wrong node type.");
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return (false);
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}
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if (data == node->value.custom.data)
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{
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node->value.custom.destroy = destroy_cb;
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return (true);
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}
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// Free any old element value and set the new value...
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if (node->value.custom.data && node->value.custom.destroy)
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(*(node->value.custom.destroy))(node->value.custom.data);
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node->value.custom.data = data;
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node->value.custom.destroy = destroy_cb;
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return (true);
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}
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//
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// 'mxmlSetDeclaration()' - Set a declaration to a literal string.
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//
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// This function sets the string value of a declaration node.
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//
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bool // O - `true` on success, `false` on failure
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mxmlSetDeclaration(
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mxml_node_t *node, // I - Node
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const char *declaration) // I - Literal string
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{
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char *s; // New string
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// Range check input...
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if (node && node->type == MXML_TYPE_ELEMENT && node->child && node->child->type == MXML_TYPE_DECLARATION)
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node = node->child;
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if (!node || node->type != MXML_TYPE_DECLARATION)
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{
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_mxml_error("Wrong node type.");
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return (false);
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}
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else if (!declaration)
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{
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_mxml_error("NULL declaration not allowed.");
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return (false);
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}
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if (declaration == node->value.declaration)
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return (true);
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// Free any old string value and set the new value...
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if ((s = _mxml_strcopy(declaration)) == NULL)
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{
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_mxml_error("Unable to allocate memory for declaration string.");
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return (false);
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}
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_mxml_strfree(node->value.declaration);
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node->value.declaration = s;
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return (true);
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}
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//
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// 'mxmlSetDeclarationf()' - Set a declaration to a formatted string.
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//
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// This function sets the formatted string value of a declaration node.
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//
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bool // O - `true` on success, `false` on failure
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mxmlSetDeclarationf(mxml_node_t *node, // I - Node
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const char *format, // I - `printf`-style format string
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...) // I - Additional arguments as needed
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{
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va_list ap; // Pointer to arguments
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char buffer[16384]; // Format buffer
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char *s; // Temporary string
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// Range check input...
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if (node && node->type == MXML_TYPE_ELEMENT && node->child && node->child->type == MXML_TYPE_COMMENT)
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node = node->child;
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if (!node || node->type != MXML_TYPE_COMMENT)
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{
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_mxml_error("Wrong node type.");
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return (false);
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}
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else if (!format)
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{
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_mxml_error("NULL string not allowed.");
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return (false);
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}
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// Format the new string, free any old string value, and set the new value...
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va_start(ap, format);
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vsnprintf(buffer, sizeof(buffer), format, ap);
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va_end(ap);
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if ((s = _mxml_strcopy(buffer)) == NULL)
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{
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_mxml_error("Unable to allocate memory for declaration string.");
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return (false);
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}
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_mxml_strfree(node->value.declaration);
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node->value.declaration = s;
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return (true);
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}
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//
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// 'mxmlSetDirective()' - Set a processing instruction to a literal string.
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//
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// This function sets the string value of a processing instruction node.
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//
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bool // O - `true` on success, `false` on failure
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mxmlSetDirective(mxml_node_t *node, // I - Node
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const char *directive)// I - Literal string
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{
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char *s; // New string
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// Range check input...
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if (node && node->type == MXML_TYPE_ELEMENT && node->child && node->child->type == MXML_TYPE_DIRECTIVE)
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node = node->child;
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if (!node || node->type != MXML_TYPE_DIRECTIVE)
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{
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_mxml_error("Wrong node type.");
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return (false);
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}
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else if (!directive)
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{
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_mxml_error("NULL directive not allowed.");
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return (false);
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}
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if (directive == node->value.directive)
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return (true);
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// Free any old string value and set the new value...
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if ((s = _mxml_strcopy(directive)) == NULL)
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{
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_mxml_error("Unable to allocate memory for directive string.");
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return (false);
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}
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_mxml_strfree(node->value.directive);
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node->value.directive = s;
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return (true);
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}
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//
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// 'mxmlSetDirectivef()' - Set a processing instruction to a formatted string.
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//
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// This function sets the formatted string value of a processing instruction
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// node.
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//
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bool // O - `true` on success, `false` on failure
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mxmlSetDirectivef(mxml_node_t *node, // I - Node
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const char *format, // I - `printf`-style format string
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...) // I - Additional arguments as needed
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{
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va_list ap; // Pointer to arguments
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char buffer[16384]; // Format buffer
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char *s; // Temporary string
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// Range check input...
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if (node && node->type == MXML_TYPE_ELEMENT && node->child && node->child->type == MXML_TYPE_DIRECTIVE)
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node = node->child;
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if (!node || node->type != MXML_TYPE_DIRECTIVE)
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{
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_mxml_error("Wrong node type.");
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return (false);
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}
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else if (!format)
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{
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_mxml_error("NULL string not allowed.");
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return (false);
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}
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// Format the new string, free any old string value, and set the new value...
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va_start(ap, format);
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vsnprintf(buffer, sizeof(buffer), format, ap);
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va_end(ap);
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if ((s = _mxml_strcopy(buffer)) == NULL)
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{
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_mxml_error("Unable to allocate memory for directive string.");
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return (false);
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}
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_mxml_strfree(node->value.directive);
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node->value.directive = s;
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return (true);
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}
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//
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// 'mxmlSetElement()' - Set the name of an element node.
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//
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// This function sets the name of an element node. The node is not changed if
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// it is not an element node.
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//
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bool // O - `true` on success, `false` on failure
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mxmlSetElement(mxml_node_t *node, // I - Node to set
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const char *name) // I - New name string
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{
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char *s; // New name string
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// Range check input...
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if (!node || node->type != MXML_TYPE_ELEMENT)
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{
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_mxml_error("Wrong node type.");
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return (false);
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}
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else if (!name)
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{
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_mxml_error("NULL string not allowed.");
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return (false);
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}
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if (name == node->value.element.name)
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return (true);
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// Free any old element value and set the new value...
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if ((s = _mxml_strcopy(name)) == NULL)
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{
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_mxml_error("Unable to allocate memory for element name.");
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return (false);
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}
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_mxml_strfree(node->value.element.name);
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node->value.element.name = s;
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return (true);
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}
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//
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// 'mxmlSetInteger()' - Set the value of an integer node.
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//
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// This function sets the value of an integer node. The node is not changed if
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// it (or its first child) is not an integer node.
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//
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bool // O - `true` on success, `false` on failure
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mxmlSetInteger(mxml_node_t *node, // I - Node to set
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long integer) // I - Integer value
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{
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// Range check input...
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if (node && node->type == MXML_TYPE_ELEMENT && node->child && node->child->type == MXML_TYPE_INTEGER)
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node = node->child;
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if (!node || node->type != MXML_TYPE_INTEGER)
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{
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_mxml_error("Wrong node type.");
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return (false);
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}
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// Set the new value and return...
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node->value.integer = integer;
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return (true);
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}
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//
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// 'mxmlSetOpaque()' - Set the value of an opaque node.
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//
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// This function sets the string value of an opaque node. The node is not
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// changed if it (or its first child) is not an opaque node.
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//
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bool // O - `true` on success, `false` on failure
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mxmlSetOpaque(mxml_node_t *node, // I - Node to set
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const char *opaque) // I - Opaque string
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{
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char *s; // New opaque string
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// Range check input...
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if (node && node->type == MXML_TYPE_ELEMENT && node->child && node->child->type == MXML_TYPE_OPAQUE)
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node = node->child;
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if (!node || node->type != MXML_TYPE_OPAQUE)
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{
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_mxml_error("Wrong node type.");
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return (false);
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}
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else if (!opaque)
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{
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_mxml_error("NULL string not allowed.");
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return (false);
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}
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if (node->value.opaque == opaque)
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return (true);
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// Free any old opaque value and set the new value...
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if ((s = _mxml_strcopy(opaque)) == NULL)
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{
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_mxml_error("Unable to allocate memory for opaque string.");
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return (false);
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}
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_mxml_strfree(node->value.opaque);
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node->value.opaque = s;
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return (true);
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}
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//
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// 'mxmlSetOpaquef()' - Set the value of an opaque string node to a formatted string.
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//
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// This function sets the formatted string value of an opaque node. The node is
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// not changed if it (or its first child) is not an opaque node.
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//
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|
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bool // O - `true` on success, `false` on failure
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mxmlSetOpaquef(mxml_node_t *node, // I - Node to set
|
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const char *format, // I - Printf-style format string
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...) // I - Additional arguments as needed
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{
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va_list ap; // Pointer to arguments
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char buffer[16384]; // Format buffer
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char *s; // Temporary string
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||
|
||
|
||
// Range check input...
|
||
if (node && node->type == MXML_TYPE_ELEMENT && node->child && node->child->type == MXML_TYPE_OPAQUE)
|
||
node = node->child;
|
||
|
||
if (!node || node->type != MXML_TYPE_OPAQUE)
|
||
{
|
||
_mxml_error("Wrong node type.");
|
||
return (false);
|
||
}
|
||
else if (!format)
|
||
{
|
||
_mxml_error("NULL string not allowed.");
|
||
return (false);
|
||
}
|
||
|
||
// Format the new string, free any old string value, and set the new value...
|
||
va_start(ap, format);
|
||
vsnprintf(buffer, sizeof(buffer), format, ap);
|
||
va_end(ap);
|
||
|
||
if ((s = _mxml_strcopy(buffer)) == NULL)
|
||
{
|
||
_mxml_error("Unable to allocate memory for opaque string.");
|
||
return (false);
|
||
}
|
||
|
||
_mxml_strfree(node->value.opaque);
|
||
node->value.opaque = s;
|
||
|
||
return (true);
|
||
}
|
||
|
||
|
||
//
|
||
// 'mxmlSetReal()' - Set the value of a real value node.
|
||
//
|
||
// 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.
|
||
//
|
||
|
||
bool // O - `true` on success, `false` on failure
|
||
mxmlSetReal(mxml_node_t *node, // I - Node to set
|
||
double real) // I - Real number value
|
||
{
|
||
// Range check input...
|
||
if (node && node->type == MXML_TYPE_ELEMENT && node->child && node->child->type == MXML_TYPE_REAL)
|
||
node = node->child;
|
||
|
||
if (!node || node->type != MXML_TYPE_REAL)
|
||
{
|
||
_mxml_error("Wrong node type.");
|
||
return (false);
|
||
}
|
||
|
||
// Set the new value and return...
|
||
node->value.real = real;
|
||
|
||
return (true);
|
||
}
|
||
|
||
|
||
//
|
||
// 'mxmlSetText()' - Set the value of a text node.
|
||
//
|
||
// 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.
|
||
//
|
||
|
||
bool // O - `true` on success, `false` on failure
|
||
mxmlSetText(mxml_node_t *node, // I - Node to set
|
||
bool whitespace, // I - `true` = leading whitespace, `false` = no whitespace
|
||
const char *string) // I - String
|
||
{
|
||
char *s; // New string
|
||
|
||
|
||
// Range check input...
|
||
if (node && node->type == MXML_TYPE_ELEMENT && node->child && node->child->type == MXML_TYPE_TEXT)
|
||
node = node->child;
|
||
|
||
if (!node || node->type != MXML_TYPE_TEXT)
|
||
{
|
||
_mxml_error("Wrong node type.");
|
||
return (false);
|
||
}
|
||
else if (!string)
|
||
{
|
||
_mxml_error("NULL string not allowed.");
|
||
return (false);
|
||
}
|
||
|
||
if (string == node->value.text.string)
|
||
{
|
||
node->value.text.whitespace = whitespace;
|
||
return (true);
|
||
}
|
||
|
||
// Free any old string value and set the new value...
|
||
if ((s = _mxml_strcopy(string)) == NULL)
|
||
{
|
||
_mxml_error("Unable to allocate memory for text string.");
|
||
return (false);
|
||
}
|
||
|
||
_mxml_strfree(node->value.text.string);
|
||
|
||
node->value.text.whitespace = whitespace;
|
||
node->value.text.string = s;
|
||
|
||
return (true);
|
||
}
|
||
|
||
|
||
//
|
||
// 'mxmlSetTextf()' - Set the value of a text node to a formatted string.
|
||
//
|
||
// 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.
|
||
//
|
||
|
||
bool // O - `true` on success, `false` on failure
|
||
mxmlSetTextf(mxml_node_t *node, // I - Node to set
|
||
bool whitespace, // I - `true` = leading whitespace, `false` = no whitespace
|
||
const char *format, // I - Printf-style format string
|
||
...) // I - Additional arguments as needed
|
||
{
|
||
va_list ap; // Pointer to arguments
|
||
char buffer[16384]; // Format buffer
|
||
char *s; // Temporary string
|
||
|
||
|
||
// Range check input...
|
||
if (node && node->type == MXML_TYPE_ELEMENT && node->child && node->child->type == MXML_TYPE_TEXT)
|
||
node = node->child;
|
||
|
||
if (!node || node->type != MXML_TYPE_TEXT)
|
||
{
|
||
_mxml_error("Wrong node type.");
|
||
return (false);
|
||
}
|
||
else if (!format)
|
||
{
|
||
_mxml_error("NULL string not allowed.");
|
||
return (false);
|
||
}
|
||
|
||
// Free any old string value and set the new value...
|
||
va_start(ap, format);
|
||
vsnprintf(buffer, sizeof(buffer), format, ap);
|
||
va_end(ap);
|
||
|
||
if ((s = _mxml_strcopy(buffer)) == NULL)
|
||
{
|
||
_mxml_error("Unable to allocate memory for text string.");
|
||
return (false);
|
||
}
|
||
|
||
_mxml_strfree(node->value.text.string);
|
||
|
||
node->value.text.whitespace = whitespace;
|
||
node->value.text.string = s;
|
||
|
||
return (true);
|
||
}
|
||
|
||
|
||
//
|
||
// 'mxmlSetUserData()' - Set the user data pointer for a node.
|
||
//
|
||
|
||
bool // O - `true` on success, `false` on failure
|
||
mxmlSetUserData(mxml_node_t *node, // I - Node to set
|
||
void *data) // I - User data pointer
|
||
{
|
||
// Range check input...
|
||
if (!node)
|
||
return (false);
|
||
|
||
// Set the user data pointer and return...
|
||
node->user_data = data;
|
||
return (true);
|
||
}
|