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/******************************************************************************
* $Id$
*
* Project: MapServer
* Purpose: libxml2 convenience wrapper functions
* Author: Tom Kralidis (tomkralidis@hotmail.com)
*
******************************************************************************
* Copyright (c) 2007, Tom Kralidis
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies of this Software or works derived from this Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
****************************************************************************/
#include "mapserver.h"
#ifdef USE_LIBXML2
#include<libxml/parser.h>
#include<libxml/tree.h>
#include<libxml/xpath.h>
#include<libxml/xpathInternals.h>
/**
* msLibXml2GenerateList()
*
* Convenience function to produce a series of XML elements from a delimited list
*
* @param xmlNodePtr psParent the encompassing node
* @param xmlNsPtr psNs the namespace object
* @param const char *elname the list member element name
* @param const char *values the list member element values
* @param char delim the delimiter
*
*/
void msLibXml2GenerateList(xmlNodePtr psParent, xmlNsPtr psNs, const char *elname, const char *values, char delim)
{
char **tokens = NULL;
int n = 0;
int i = 0;
tokens = msStringSplit(values, delim, &n);
if (tokens && n > 0) {
for (i=0; i<n; i++) {
xmlNewChild(psParent, psNs, BAD_CAST elname, BAD_CAST tokens[i]);
}
msFreeCharArray(tokens, n);
}
}
/**
* msLibXml2GetXPath()
*
* Convenience function to fetch an XPath
*
* @param xmlDocPtr doc the XML doc pointer
* @param xmlXPathContextPtr the context pointer
* @param xmlChar *xpath the xpath value
*
* @return result xmlXPathObjectPtr pointer
*
*/
xmlXPathObjectPtr msLibXml2GetXPath(xmlDocPtr doc, xmlXPathContextPtr context, xmlChar *xpath)
{
xmlXPathObjectPtr result;
result = xmlXPathEval(xpath, context);
if (result == NULL) {
return NULL;
}
if(xmlXPathNodeSetIsEmpty(result->nodesetval)) {
xmlXPathFreeObject(result);
return NULL;
}
return result;
}
/**
* msLibXml2GetXPathTree
*
* Convenience function to fetch an XPath and children
*
* @param xmlDocPtr doc the XML doc pointer
* @param xmlXPathObjectPtr the xpath object
*
* @return result string
*
*/
const char *msLibXml2GetXPathTree(xmlDocPtr doc, xmlXPathObjectPtr xpath)
{
xmlBufferPtr xbuf;
const char *result = NULL;
xbuf = xmlBufferCreate();
if (xpath) {
if (xmlNodeDump(xbuf, doc, xpath->nodesetval->nodeTab[0], 0, 0) == -1) {
return NULL;
}
result = msStrdup((char *)xbuf->content);
}
xmlBufferFree(xbuf);
return result;
}
#endif /* defined(USE_LIBXML2) */
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