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/*
* Copyright (C) 2006 Ronald Lamprecht
*
* 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 "PreferenceManager.hh"
#include "main.hh"
#include "DOMErrorReporter.hh"
#include "DOMSchemaResolver.hh"
#include "LocalToXML.hh"
#include "nls.hh"
#include "Utf8ToXML.hh"
#include "utilXML.hh"
#include "options.hh"
#include "XMLtoLocal.hh"
#include "XMLtoUtf8.hh"
#include "ecl_system.hh"
#include "gui/ErrorMenu.hh"
#include <iostream>
#include <xercesc/dom/DOM.hpp>
#include <xercesc/util/XMLDouble.hpp>
#include <xercesc/util/XMLString.hpp>
#include <xercesc/util/XMLUniDefs.hpp>
#include <xercesc/util/PlatformUtils.hpp>
#include <xercesc/util/XercesVersion.hpp>
#if _XERCES_VERSION < 30000
#include <xercesc/framework/LocalFileFormatTarget.hpp>
#endif
using namespace std;
using namespace enigma;
XERCES_CPP_NAMESPACE_USE
namespace enigma {
PreferenceManager *PreferenceManager::theSingleton = 0;
PreferenceManager* PreferenceManager::instance() {
if (theSingleton == 0) {
theSingleton = new PreferenceManager();
}
return theSingleton;
}
PreferenceManager::PreferenceManager() {
std::string prefTemplatePath;
bool haveXMLProperties = ecl::FileExists(app.prefPath);
if (!app.systemFS->findFile( std::string("schemas/") + PREFFILENAME , prefTemplatePath)) {
cerr << "Preferences: no template found\n";
exit(-1);
}
try {
app.domParserErrorHandler->resetErrors();
app.domParserErrorHandler->reportToErr();
app.domParserSchemaResolver->resetResolver();
app.domParserSchemaResolver->addSchemaId("preferences.xsd","preferences.xsd");
if (haveXMLProperties) {
// update existing XML prefs from possibly newer template:
// use user prefs and copy new properties from template
doc = app.domParser->parseURI(app.prefPath.c_str());
propertiesElem = dynamic_cast<DOMElement *>(doc->getElementsByTagName(
Utf8ToXML("properties").x_str())->item(0));
// The following algorithm is not optimized - O(n^2)!
DOMDocument * prefTemplate = app.domParser->parseURI(prefTemplatePath.c_str());
DOMNodeList * tmplPropList = prefTemplate->getElementsByTagName(
Utf8ToXML("property").x_str());
for (int i = 0, l = tmplPropList-> getLength(); i < l; i++) {
DOMElement *tmplProperty = dynamic_cast<DOMElement *>(tmplPropList->item(i));
const XMLCh * key = tmplProperty->getAttribute(Utf8ToXML("key").x_str());
DOMElement * lastUserProperty;
if ((key[0] != chUnderscore) && !hasProperty(key, &lastUserProperty)) {
// a new property in the template
Log << "Preferences: add new Property \"" << XMLtoLocal(key) << "\"\n";
// make a copy
DOMNode * newProperty = doc->importNode(tmplProperty, false);
if (newProperty == NULL) {
Log << "Preferences: copy new Property failed!\n";
} else {
// insert it at the end of the existing user properties
propertiesElem->appendChild(dynamic_cast<DOMElement *>(newProperty));
}
}
}
prefTemplate->release();
} else {
// update from LUA options to XML preferences:
// use the template, copy LUA option values and save it later as prefs
doc = app.domParser->parseURI(prefTemplatePath.c_str());
propertiesElem = dynamic_cast<DOMElement *>(doc->getElementsByTagName(
Utf8ToXML("properties").x_str())->item(0));
DOMNodeList * propList = propertiesElem->getElementsByTagName(Utf8ToXML("property").x_str());
for (int i = 0, l = propList-> getLength(); i < l; i++) {
DOMElement * property = dynamic_cast<DOMElement *>(propList->item(i));
const XMLCh * key = property->getAttribute(Utf8ToXML("key").x_str());
std::string optionValue;
if (options::HasOption(XMLtoLocal(key).c_str(), optionValue)) {
Log << "Preferences: copy LUA option \"" << XMLtoLocal(key) << "\"\n";
property->setAttribute(Utf8ToXML("value").x_str(),
LocalToXML(&optionValue).x_str());
} else {
Log << "Preferences: no LUA option \"" << XMLtoLocal(key) << "\"\n";
}
}
}
}
catch (const XMLException& toCatch) {
char* message = XMLString::transcode(toCatch.getMessage());
cerr << "Exception on load of preferences: "
<< message << "\n";
XMLString::release(&message);
exit (-1);
}
catch (const DOMException& toCatch) {
char* message = XMLString::transcode(toCatch.msg);
cerr << "Exception on load of preferences: "
<< message << "\n";
XMLString::release(&message);
exit (-1);
}
catch (...) {
cerr << "Unexpected Exception on load of preferences\n" ;
exit (-1);
}
}
PreferenceManager::~PreferenceManager() {
if (doc != NULL)
shutdown();
}
bool PreferenceManager::save() {
bool result = true;
std::string errMessage;
if (doc == NULL)
return true;
stripIgnorableWhitespace(doc->getDocumentElement());
try {
#if _XERCES_VERSION >= 30000
result = app.domSer->writeToURI(doc, LocalToXML(& app.prefPath).x_str());
#else
XMLFormatTarget *myFormTarget = new LocalFileFormatTarget(app.prefPath.c_str());
result = app.domSer->writeNode(myFormTarget, *doc);
delete myFormTarget; // flush
#endif
} catch (const XMLException& toCatch) {
errMessage = std::string("Exception on save of preferences: \n") +
XMLtoUtf8(toCatch.getMessage()).c_str() + "\n";
result = false;
} catch (const DOMException& toCatch) {
errMessage = std::string("Exception on save of preferences: \n") +
XMLtoUtf8(toCatch.getMessage()).c_str() + "\n";
result = false;
} catch (...) {
errMessage = "Unexpected exception on save of preferences\n" ;
result = false;
}
if (!result) {
cerr << errMessage;
gui::ErrorMenu m(errMessage, N_("Continue"));
m.manage();
} else
Log << "Preferences save o.k.\n";
return result;
}
void PreferenceManager::shutdown() {
save();
if (doc != NULL)
doc->release();
doc = NULL;
}
} // namespace enigma
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