mirror of
https://github.com/michaelrsweet/mxml.git
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496 lines
9.9 KiB
C
496 lines
9.9 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 © 2003-2021 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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/*
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* Include necessary headers...
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*/
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#include "config.h"
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#include "mxml-private.h"
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/*
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* 'mxmlSetCDATA()' - Set the element name of a CDATA node.
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*
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* The node is not changed if it (or its first child) is not a CDATA element node.
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*
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* @since Mini-XML 2.3@
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*/
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int /* O - 0 on success, -1 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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/*
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* Range check input...
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*/
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if (node && node->type == MXML_ELEMENT &&
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strncmp(node->value.element.name, "![CDATA[", 8) &&
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node->child && node->child->type == MXML_ELEMENT &&
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!strncmp(node->child->value.element.name, "![CDATA[", 8))
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node = node->child;
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if (!node || node->type != MXML_ELEMENT ||
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strncmp(node->value.element.name, "![CDATA[", 8))
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{
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mxml_error("Wrong node type.");
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return (-1);
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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 (-1);
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}
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if (data == (node->value.element.name + 8))
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{
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/*
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* Don't change the value...
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*/
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return (0);
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}
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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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*/
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if ((s = _mxml_strdupf("![CDATA[%s", data)) == NULL)
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{
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mxml_error("Unable to allocate memory for CDATA.");
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return (-1);
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}
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free(node->value.element.name);
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node->value.element.name = s;
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return (0);
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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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* The node is not changed if it (or its first child) is not a custom node.
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*
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* @since Mini-XML 2.1@
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*/
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int /* O - 0 on success, -1 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) /* I - New destructor function */
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{
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/*
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* Range check input...
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*/
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if (node && node->type == MXML_ELEMENT &&
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node->child && node->child->type == MXML_CUSTOM)
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node = node->child;
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if (!node || node->type != MXML_CUSTOM)
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{
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mxml_error("Wrong node type.");
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return (-1);
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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;
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return (0);
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}
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/*
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* Free any old element value and set the new value...
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*/
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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;
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return (0);
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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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* The node is not changed if it is not an element node.
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*/
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int /* O - 0 on success, -1 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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/*
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* Range check input...
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*/
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if (!node || node->type != MXML_ELEMENT)
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{
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mxml_error("Wrong node type.");
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return (-1);
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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 (-1);
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}
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if (name == node->value.element.name)
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return (0);
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/*
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* Free any old element value and set the new value...
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*/
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if ((s = strdup(name)) == NULL)
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{
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mxml_error("Unable to allocate memory for element name.");
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return (-1);
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}
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free(node->value.element.name);
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node->value.element.name = s;
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return (0);
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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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* The node is not changed if it (or its first child) is not an integer node.
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*/
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int /* O - 0 on success, -1 on failure */
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mxmlSetInteger(mxml_node_t *node, /* I - Node to set */
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int integer) /* I - Integer value */
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{
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/*
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* Range check input...
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*/
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if (node && node->type == MXML_ELEMENT &&
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node->child && node->child->type == MXML_INTEGER)
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node = node->child;
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if (!node || node->type != MXML_INTEGER)
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{
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mxml_error("Wrong node type.");
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return (-1);
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}
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/*
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* Set the new value and return...
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*/
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node->value.integer = integer;
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return (0);
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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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* The node is not changed if it (or its first child) is not an opaque node.
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*/
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int /* O - 0 on success, -1 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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/*
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* Range check input...
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*/
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if (node && node->type == MXML_ELEMENT &&
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node->child && node->child->type == MXML_OPAQUE)
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node = node->child;
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if (!node || node->type != MXML_OPAQUE)
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{
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mxml_error("Wrong node type.");
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return (-1);
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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 (-1);
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}
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if (node->value.opaque == opaque)
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return (0);
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/*
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* Free any old opaque value and set the new value...
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*/
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if ((s = strdup(opaque)) == NULL)
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{
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mxml_error("Unable to allocate memory for opaque string.");
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return (-1);
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}
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free(node->value.opaque);
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node->value.opaque = s;
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return (0);
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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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* The node is not changed if it (or its first child) is not an opaque node.
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*
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* @since Mini-XML 2.11@
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*/
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int /* O - 0 on success, -1 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 *s; /* Temporary string */
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/*
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* Range check input...
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*/
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if (node && node->type == MXML_ELEMENT &&
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node->child && node->child->type == MXML_OPAQUE)
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node = node->child;
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if (!node || node->type != MXML_OPAQUE)
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{
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mxml_error("Wrong node type.");
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return (-1);
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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 (-1);
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}
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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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*/
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va_start(ap, format);
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s = _mxml_vstrdupf(format, ap);
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va_end(ap);
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if (!s)
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{
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mxml_error("Unable to allocate memory for opaque string.");
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return (-1);
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}
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free(node->value.opaque);
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node->value.opaque = s;
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return (0);
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}
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/*
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* 'mxmlSetReal()' - Set the value of a real number node.
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*
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* The node is not changed if it (or its first child) is not a real number node.
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*/
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int /* O - 0 on success, -1 on failure */
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mxmlSetReal(mxml_node_t *node, /* I - Node to set */
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double real) /* I - Real number value */
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{
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/*
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* Range check input...
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*/
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if (node && node->type == MXML_ELEMENT &&
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node->child && node->child->type == MXML_REAL)
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node = node->child;
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if (!node || node->type != MXML_REAL)
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{
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mxml_error("Wrong node type.");
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return (-1);
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}
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/*
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* Set the new value and return...
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*/
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node->value.real = real;
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return (0);
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}
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/*
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* 'mxmlSetText()' - Set the value of a text node.
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*
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* The node is not changed if it (or its first child) is not a text node.
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*/
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int /* O - 0 on success, -1 on failure */
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mxmlSetText(mxml_node_t *node, /* I - Node to set */
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int whitespace, /* I - 1 = leading whitespace, 0 = no whitespace */
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const char *string) /* I - String */
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{
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char *s; /* New string */
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/*
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* Range check input...
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*/
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if (node && node->type == MXML_ELEMENT &&
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node->child && node->child->type == MXML_TEXT)
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node = node->child;
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if (!node || node->type != MXML_TEXT)
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{
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mxml_error("Wrong node type.");
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return (-1);
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}
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else if (!string)
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{
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mxml_error("NULL string not allowed.");
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return (-1);
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}
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if (string == node->value.text.string)
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{
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node->value.text.whitespace = whitespace;
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return (0);
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}
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/*
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* Free any old string value and set the new value...
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*/
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if ((s = strdup(string)) == NULL)
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{
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mxml_error("Unable to allocate memory for text string.");
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return (-1);
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}
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free(node->value.text.string);
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node->value.text.whitespace = whitespace;
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node->value.text.string = s;
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return (0);
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}
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/*
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* 'mxmlSetTextf()' - Set the value of a text node to a formatted string.
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*
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* The node is not changed if it (or its first child) is not a text node.
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*/
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int /* O - 0 on success, -1 on failure */
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mxmlSetTextf(mxml_node_t *node, /* I - Node to set */
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int whitespace, /* I - 1 = leading whitespace, 0 = no whitespace */
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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 *s; /* Temporary string */
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/*
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* Range check input...
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*/
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if (node && node->type == MXML_ELEMENT &&
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node->child && node->child->type == MXML_TEXT)
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node = node->child;
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if (!node || node->type != MXML_TEXT)
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{
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mxml_error("Wrong node type.");
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return (-1);
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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 (-1);
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}
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/*
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* Free any old string value and set the new value...
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*/
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va_start(ap, format);
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s = _mxml_vstrdupf(format, ap);
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va_end(ap);
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if (!s)
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{
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mxml_error("Unable to allocate memory for text string.");
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return (-1);
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}
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free(node->value.text.string);
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node->value.text.whitespace = whitespace;
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node->value.text.string = s;
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return (0);
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}
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/*
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* 'mxmlSetUserData()' - Set the user data pointer for a node.
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*
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* @since Mini-XML 2.7@
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*/
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int /* O - 0 on success, -1 on failure */
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mxmlSetUserData(mxml_node_t *node, /* I - Node to set */
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void *data) /* I - User data pointer */
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{
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/*
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* Range check input...
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*/
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if (!node)
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return (-1);
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/*
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* Set the user data pointer and return...
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*/
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node->user_data = data;
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return (0);
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}
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