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david hill
249
utils/configcpp/xmlparser.cpp
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249
utils/configcpp/xmlparser.cpp
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/* Copyright (C) 2014 InfiniDB, Inc.
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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 General Public License
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as published by the Free Software Foundation; version 2 of
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the License.
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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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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA. */
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/******************************************************************************************
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* $Id$
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*
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******************************************************************************************/
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#include "config.h"
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#include <string>
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#include <stdexcept>
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#include <libxml/xmlmemory.h>
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#include <libxml/parser.h>
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#include <vector>
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using namespace std;
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#include "xmlparser.h"
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namespace config
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{
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const string XMLParser::getConfig(const xmlDocPtr doc, const string& section, const string& name) const
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{
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string res;
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xmlNodePtr cur1 = xmlDocGetRootElement(doc);
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if (cur1 == NULL)
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throw runtime_error("XMLParser::getConfig: error accessing XML root");
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cur1 = cur1->xmlChildrenNode;
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while (cur1 != NULL)
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{
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if ((!xmlStrcmp(cur1->name, (const xmlChar *)section.c_str())))
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{
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xmlNodePtr cur2 = cur1->xmlChildrenNode;
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while (cur2 != NULL)
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{
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if ((!xmlStrcmp(cur2->name, (const xmlChar*)name.c_str())))
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{
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xmlNodePtr cur3 = cur2->xmlChildrenNode;
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if (cur3)
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res = (const char*)cur3->content;
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return expand(res);
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}
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cur2 = cur2->next;
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}
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}
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cur1 = cur1->next;
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}
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// maybe nullstr if not found
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return expand(res);
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}
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void XMLParser::getConfig(const xmlDocPtr doc, const string& section, const string& name, vector<string>& values) const
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{
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string res;
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xmlNodePtr cur1 = xmlDocGetRootElement(doc);
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if (cur1 == NULL)
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throw runtime_error("XMLParser::getConfig: error accessing XML root");
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cur1 = cur1->xmlChildrenNode;
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while (cur1 != NULL)
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{
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if ((!xmlStrcmp(cur1->name, (const xmlChar *)section.c_str())))
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{
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xmlNodePtr cur2 = cur1->xmlChildrenNode;
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while (cur2 != NULL)
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{
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if ((!xmlStrcmp(cur2->name, (const xmlChar*)name.c_str())))
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{
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res.clear();
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xmlNodePtr cur3 = cur2->xmlChildrenNode;
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if (cur3)
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res = (const char*)cur3->content;
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values.push_back(expand(res));
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}
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cur2 = cur2->next;
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}
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}
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cur1 = cur1->next;
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}
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}
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void XMLParser::setConfig(xmlDocPtr doc, const string& section, const string& name, const string& value)
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{
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xmlNodePtr cur1 = xmlDocGetRootElement(doc);
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if (cur1 == NULL)
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throw runtime_error("XMLParser::setConfig: error accessing XML root");
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xmlNodePtr cur2;
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cur1 = cur1->xmlChildrenNode;
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while (cur1 != NULL)
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{
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if (xmlStrcmp(cur1->name, (const xmlChar *)section.c_str()) == 0)
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{
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cur2 = cur1->xmlChildrenNode;
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while (cur2 != NULL)
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{
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if (xmlStrcmp(cur2->name, (const xmlChar*)name.c_str()) == 0)
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{
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xmlNodePtr cur3 = cur2->xmlChildrenNode;
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if (cur3 == NULL)
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{
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xmlAddChild(cur2, xmlNewText((const xmlChar*)"\t"));
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cur3 = cur2->xmlChildrenNode;
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}
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else
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{
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xmlFree(cur3->content);
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}
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cur3->content = xmlStrdup((const xmlChar*)value.c_str());
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return;
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}
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cur2 = cur2->next;
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}
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// We found the section, but not the name, so we need to add a new node here
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xmlAddChild(cur1, xmlNewText((const xmlChar*)"\t"));
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xmlNewTextChild(cur1, NULL, (const xmlChar*)name.c_str(), (const xmlChar*)value.c_str());
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xmlAddChild(cur1, xmlNewText((const xmlChar*)"\n\t"));
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return;
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}
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cur1 = cur1->next;
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}
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// We did not find the section, so we need to add it and the name here
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cur1 = xmlDocGetRootElement(doc);
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xmlAddChild(cur1, xmlNewText((const xmlChar*)"\t"));
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cur2 = xmlNewChild(cur1, NULL, (const xmlChar*)section.c_str(), NULL);
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xmlAddChild(cur2, xmlNewText((const xmlChar*)"\n\t\t"));
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xmlNewTextChild(cur2, NULL, (const xmlChar*)name.c_str(), (const xmlChar*)value.c_str());
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xmlAddChild(cur2, xmlNewText((const xmlChar*)"\n\t"));
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xmlAddChild(cur1, xmlNewText((const xmlChar*)"\n"));
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return;
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}
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void XMLParser::delConfig(xmlDocPtr doc, const string& section, const string& name)
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{
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string res;
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xmlNodePtr cur1 = xmlDocGetRootElement(doc);
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if (cur1 == NULL)
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throw runtime_error("XMLParser::delConfig: error accessing XML root");
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cur1 = cur1->xmlChildrenNode;
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while (cur1 != NULL)
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{
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if ((!xmlStrcmp(cur1->name, (const xmlChar *)section.c_str())))
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{
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xmlNodePtr cur2 = cur1->xmlChildrenNode;
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while (cur2 != NULL)
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{
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xmlNodePtr tmp = cur2;
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cur2 = cur2->next;
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if ((!xmlStrcmp(tmp->name, (const xmlChar*)name.c_str())))
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{
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xmlUnlinkNode(tmp);
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xmlFreeNode(tmp);
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}
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}
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}
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cur1 = cur1->next;
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}
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return;
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}
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const string XMLParser::expand(const std::string& in) const
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{
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string out(in);
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string::size_type pos;
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const string::size_type len=11;
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pos = out.find("$INSTALLDIR");
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while (pos != string::npos)
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{
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out.replace(pos, len, fInstallDir);
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pos = out.find("$INSTALLDIR");
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}
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return out;
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}
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const vector<string> XMLParser::enumConfig(const xmlDocPtr doc) const
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{
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vector<string> resv;
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string res;
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xmlNodePtr cur1 = xmlDocGetRootElement(doc);
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if (cur1 == NULL)
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throw runtime_error("XMLParser::getConfig: error accessing XML root");
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cur1 = cur1->xmlChildrenNode;
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while (cur1 != NULL)
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{
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res = reinterpret_cast<const char*>(cur1->name);
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if (res != "text" && res != "comment")
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resv.push_back(res);
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cur1 = cur1->next;
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}
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return resv;
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}
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const vector<string> XMLParser::enumSection(const xmlDocPtr doc, const string& section) const
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{
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vector<string> resv;
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string res;
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xmlNodePtr cur1 = xmlDocGetRootElement(doc);
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if (cur1 == NULL)
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throw runtime_error("XMLParser::getConfig: error accessing XML root");
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cur1 = cur1->xmlChildrenNode;
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while (cur1 != NULL)
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{
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if ((!xmlStrcmp(cur1->name, (const xmlChar *)section.c_str())))
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{
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xmlNodePtr cur2 = cur1->xmlChildrenNode;
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while (cur2 != NULL)
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{
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res = reinterpret_cast<const char*>(cur2->name);
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if (res != "text" && res != "comment")
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resv.push_back(expand(res));
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cur2 = cur2->next;
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}
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}
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cur1 = cur1->next;
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}
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return resv;
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}
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} //namespace
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// vim:ts=4 sw=4:
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