mirror of
https://github.com/RetroShare/RetroShare.git
synced 2024-12-27 16:39:29 -05:00
13f2863569
- Fixed memory leak in xpath processing - Stop long loops when closing the preview dialog or shutdown - Added drag and drop to xpath lists in preview dialog - Fixed save of xpaths lists git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@6074 b45a01b8-16f6-495d-af2f-9b41ad6348cc
120 lines
2.5 KiB
C++
120 lines
2.5 KiB
C++
/****************************************************************
|
|
* RetroShare GUI is distributed under the following license:
|
|
*
|
|
* Copyright (C) 2012 by Thunder
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor,
|
|
* Boston, MA 02110-1301, USA.
|
|
****************************************************************/
|
|
|
|
#include "XPathWrapper.h"
|
|
#include "XMLWrapper.h"
|
|
|
|
XPathWrapper::XPathWrapper(XMLWrapper &xmlWrapper) : mXMLWrapper(xmlWrapper)
|
|
{
|
|
mContext = NULL;
|
|
mResult = NULL;
|
|
}
|
|
|
|
XPathWrapper::~XPathWrapper()
|
|
{
|
|
cleanup();
|
|
}
|
|
|
|
void XPathWrapper::cleanup()
|
|
{
|
|
if (mResult) {
|
|
xmlXPathFreeObject(mResult);
|
|
mResult = NULL;
|
|
}
|
|
if (mContext) {
|
|
xmlXPathFreeContext(mContext);
|
|
mContext = NULL;
|
|
}
|
|
}
|
|
|
|
bool XPathWrapper::compile(const char *expression)
|
|
{
|
|
cleanup();
|
|
|
|
xmlDocPtr document = mXMLWrapper.getDocument();
|
|
if (!document) {
|
|
return false;
|
|
}
|
|
|
|
mContext = xmlXPathNewContext(document);
|
|
if (!mContext) {
|
|
cleanup();
|
|
return false;
|
|
}
|
|
|
|
xmlChar *xmlExpression = NULL;
|
|
if (!mXMLWrapper.convertFromString(expression, xmlExpression)) {
|
|
cleanup();
|
|
return false;
|
|
}
|
|
mResult = xmlXPathEvalExpression(xmlExpression, mContext);
|
|
xmlFree(xmlExpression);
|
|
|
|
return true;
|
|
}
|
|
|
|
xmlXPathObjectType XPathWrapper::type()
|
|
{
|
|
if (mResult) {
|
|
return mResult->type;
|
|
}
|
|
|
|
return XPATH_UNDEFINED;
|
|
}
|
|
|
|
unsigned int XPathWrapper::count()
|
|
{
|
|
if (!mResult) {
|
|
return 0;
|
|
}
|
|
|
|
if (mResult->type != XPATH_NODESET) {
|
|
return 0;
|
|
}
|
|
|
|
if (xmlXPathNodeSetIsEmpty(mResult->nodesetval)) {
|
|
return 0;
|
|
}
|
|
|
|
return mResult->nodesetval->nodeNr;
|
|
}
|
|
|
|
xmlNodePtr XPathWrapper::node(unsigned int index)
|
|
{
|
|
if (!mResult) {
|
|
return NULL;
|
|
}
|
|
|
|
if (mResult->type != XPATH_NODESET) {
|
|
return NULL;
|
|
}
|
|
|
|
if (xmlXPathNodeSetIsEmpty(mResult->nodesetval)) {
|
|
return NULL;
|
|
}
|
|
|
|
if (index >= (unsigned int) mResult->nodesetval->nodeNr) {
|
|
return NULL;
|
|
}
|
|
|
|
return mResult->nodesetval->nodeTab[index];
|
|
}
|