root / logic / trunk / src / mxml / mxml-attr.c @ 89
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/*
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* "$Id: mxml-attr.c 308 2007-09-15 20:04:56Z mike $"
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*
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* Attribute support code for Mini-XML, a small XML-like file parsing library.
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*
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* Copyright 2003-2007 by Michael Sweet.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* Contents:
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*
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* mxmlElementDeleteAttr() - Delete an attribute.
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* mxmlElementGetAttr() - Get an attribute.
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* mxmlElementSetAttr() - Set an attribute.
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* mxmlElementSetAttrf() - Set an attribute with a formatted value.
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* mxml_set_attr() - Set or add an attribute name/value pair.
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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.h" |
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/*
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* Local functions...
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*/
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static int mxml_set_attr(mxml_node_t *node, const char *name, |
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char *value);
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/*
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* 'mxmlElementDeleteAttr()' - Delete an attribute.
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*
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* @since Mini-XML 2.4@
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*/
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void
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mxmlElementDeleteAttr(mxml_node_t *node,/* I - Element */
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const char *name)/* I - Attribute name */ |
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{ |
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int i; /* Looping var */ |
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mxml_attr_t *attr; /* Cirrent attribute */
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#ifdef DEBUG
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fprintf(stderr, "mxmlElementDeleteAttr(node=%p, name=\"%s\")\n",
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node, name ? name : "(null)");
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#endif /* DEBUG */ |
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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 || !name)
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return;
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/*
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* Look for the attribute...
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*/
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for (i = node->value.element.num_attrs, attr = node->value.element.attrs;
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i > 0;
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i --, attr ++) |
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{ |
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#ifdef DEBUG
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printf(" %s=\"%s\"\n", attr->name, attr->value);
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#endif /* DEBUG */ |
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if (!strcmp(attr->name, name))
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{ |
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/*
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* Delete this attribute...
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*/
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free(attr->name); |
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free(attr->value); |
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i --; |
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if (i > 0) |
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memmove(attr, attr + 1, i * sizeof(mxml_attr_t)); |
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node->value.element.num_attrs --; |
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return;
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} |
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} |
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} |
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/*
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* 'mxmlElementGetAttr()' - Get an attribute.
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*
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* This function returns NULL if the node is not an element or the
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* named attribute does not exist.
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*/
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const char * /* O - Attribute value or NULL */ |
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mxmlElementGetAttr(mxml_node_t *node, /* I - Element node */
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const char *name) /* I - Name of attribute */ |
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{ |
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int i; /* Looping var */ |
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mxml_attr_t *attr; /* Cirrent attribute */
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#ifdef DEBUG
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fprintf(stderr, "mxmlElementGetAttr(node=%p, name=\"%s\")\n",
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node, name ? name : "(null)");
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#endif /* DEBUG */ |
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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 || !name)
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return (NULL); |
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/*
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* Look for the attribute...
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*/
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for (i = node->value.element.num_attrs, attr = node->value.element.attrs;
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i > 0;
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i --, attr ++) |
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{ |
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#ifdef DEBUG
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printf(" %s=\"%s\"\n", attr->name, attr->value);
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#endif /* DEBUG */ |
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if (!strcmp(attr->name, name))
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{ |
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#ifdef DEBUG
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printf(" Returning \"%s\"!\n", attr->value);
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#endif /* DEBUG */ |
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return (attr->value);
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} |
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} |
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/*
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* Didn't find attribute, so return NULL...
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*/
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#ifdef DEBUG
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puts(" Returning NULL!\n");
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#endif /* DEBUG */ |
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return (NULL); |
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} |
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/*
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* 'mxmlElementSetAttr()' - Set an attribute.
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*
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* If the named attribute already exists, the value of the attribute
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* is replaced by the new string value. The string value is copied
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* into the element node. This function does nothing if the node is
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* not an element.
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*/
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void
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mxmlElementSetAttr(mxml_node_t *node, /* I - Element node */
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const char *name, /* I - Name of attribute */ |
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const char *value) /* I - Attribute value */ |
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{ |
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char *valuec; /* Copy of value */ |
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#ifdef DEBUG
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fprintf(stderr, "mxmlElementSetAttr(node=%p, name=\"%s\", value=\"%s\")\n",
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node, name ? name : "(null)", value ? value : "(null)"); |
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#endif /* DEBUG */ |
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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 || !name)
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return;
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if (value)
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valuec = strdup(value); |
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else
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valuec = NULL;
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if (mxml_set_attr(node, name, valuec))
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free(valuec); |
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} |
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/*
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* 'mxmlElementSetAttrf()' - Set an attribute with a formatted value.
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*
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* If the named attribute already exists, the value of the attribute
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* is replaced by the new formatted string. The formatted string value is
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* copied into the element node. This function does nothing if the node
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* is not an element.
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*
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* @since Mini-XML 2.3@
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*/
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void
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mxmlElementSetAttrf(mxml_node_t *node, /* I - Element node */
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const char *name, /* I - Name of attribute */ |
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const char *format,/* I - Printf-style attribute value */ |
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...) /* I - Additional arguments as needed */
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{ |
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va_list ap; /* Argument pointer */
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char *value; /* Value */ |
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#ifdef DEBUG
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fprintf(stderr, |
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"mxmlElementSetAttrf(node=%p, name=\"%s\", format=\"%s\", ...)\n",
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node, name ? name : "(null)", format ? format : "(null)"); |
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#endif /* DEBUG */ |
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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 || !name || !format)
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return;
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/*
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* Format the value...
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*/
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va_start(ap, format); |
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value = _mxml_vstrdupf(format, ap); |
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va_end(ap); |
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if (!value)
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mxml_error("Unable to allocate memory for attribute '%s' in element %s!",
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name, node->value.element.name); |
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else if (mxml_set_attr(node, name, value)) |
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free(value); |
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} |
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/*
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* 'mxml_set_attr()' - Set or add an attribute name/value pair.
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*/
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static int /* O - 0 on success, -1 on failure */ |
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mxml_set_attr(mxml_node_t *node, /* I - Element node */
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const char *name, /* I - Attribute name */ |
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char *value) /* I - Attribute value */ |
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{ |
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int i; /* Looping var */ |
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mxml_attr_t *attr; /* New attribute */
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/*
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* Look for the attribute...
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*/
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for (i = node->value.element.num_attrs, attr = node->value.element.attrs;
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i > 0;
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i --, attr ++) |
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if (!strcmp(attr->name, name))
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{ |
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/*
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* Free the old value as needed...
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*/
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if (attr->value)
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free(attr->value); |
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attr->value = value; |
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return (0); |
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} |
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/*
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* Add a new attribute...
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*/
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if (node->value.element.num_attrs == 0) |
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attr = malloc(sizeof(mxml_attr_t));
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else
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attr = realloc(node->value.element.attrs, |
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(node->value.element.num_attrs + 1) * sizeof(mxml_attr_t)); |
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if (!attr)
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{ |
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mxml_error("Unable to allocate memory for attribute '%s' in element %s!",
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name, node->value.element.name); |
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return (-1); |
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} |
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node->value.element.attrs = attr; |
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attr += node->value.element.num_attrs; |
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if ((attr->name = strdup(name)) == NULL) |
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{ |
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mxml_error("Unable to allocate memory for attribute '%s' in element %s!",
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name, node->value.element.name); |
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return (-1); |
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} |
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attr->value = value; |
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node->value.element.num_attrs ++; |
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return (0); |
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} |
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/*
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* End of "$Id: mxml-attr.c 308 2007-09-15 20:04:56Z mike $".
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*/
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