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Scribus Developer Documentation - API

prefsfile.cpp

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00001 /*
00002 For general Scribus (>=1.3.2) copyright and licensing information please refer
00003 to the COPYING file provided with the program. Following this notice may exist
00004 a copyright and/or license notice that predates the release of Scribus 1.3.2
00005 for which a new license (GPL+exception) is in place.
00006 */
00007 /***************************************************************************
00008  *   Copyright (C) 2004 by Riku Leino                                      *
00009  *   tsoots@gmail.com                                                      *
00010  *                                                                         *
00011  *   This program is free software; you can redistribute it and/or modify  *
00012  *   it under the terms of the GNU General Public License as published by  *
00013  *   the Free Software Foundation; either version 2 of the License, or     *
00014  *   (at your option) any later version.                                   *
00015  *                                                                         *
00016  *   This program is distributed in the hope that it will be useful,       *
00017  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
00018  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
00019  *   GNU General Public License for more details.                          *
00020  *                                                                         *
00021  *   You should have received a copy of the GNU General Public License     *
00022  *   along with this program; if not, write to the                         *
00023  *   Free Software Foundation, Inc.,                                       *
00024  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
00025  ***************************************************************************/
00026 
00027 #include <QFile>
00028 #include <QFileInfo>
00029 #include <QString>
00030 #include <QXmlInputSource>
00031 #include "prefsfile.h"
00032 #include "prefsreader.h"
00033 #include "prefstable.h"
00034 
00035 PrefsFile::PrefsFile()
00036 {
00037     prefsFilePath = "";
00038     ioEnabled = false;
00039 }
00040 
00041 PrefsFile::PrefsFile(const QString& pFilePath, bool write)
00042 {
00043     prefsFilePath = pFilePath;
00044     ioEnabled = write;
00045     if (ioEnabled)
00046         canWrite();
00047     load();
00048 }
00049 
00050 PrefsContext* PrefsFile::getContext(const QString& contextName, bool persistent)
00051 {
00052     if (!contexts.contains(contextName))
00053         contexts[contextName] = new PrefsContext(contextName, persistent);
00054     return contexts[contextName];
00055 }
00056 
00057 PrefsContext* PrefsFile::getPluginContext(const QString& contextName, bool persistent)
00058 {
00059     if (!pluginContexts.contains(contextName))
00060         pluginContexts[contextName] = new PrefsContext(contextName, persistent);
00061     return pluginContexts[contextName];
00062 }
00063 
00064 void PrefsFile::load()
00065 {
00066     PrefsReader* handler = new PrefsReader(&contexts, &pluginContexts);
00067     QFile* rc = new QFile(prefsFilePath);
00068     QXmlInputSource* source = new QXmlInputSource(rc);
00069     QXmlSimpleReader* reader = new QXmlSimpleReader();
00070     reader->setContentHandler(handler);
00071     reader->parse(source);
00072     delete reader;
00073     delete source;
00074     delete rc;
00075     delete handler;
00076 }
00077 
00078 void PrefsFile::write()
00079 {
00080     if ((!ioEnabled) || ((contexts.size() == 0) && (pluginContexts.size() == 0)))
00081         return; // No prefs file path set -> can't write or no prefs to write
00082     QFile* prefsXML = new QFile(prefsFilePath);
00083     if (prefsXML->open(QIODevice::WriteOnly))
00084     {
00085         QTextStream stream(prefsXML);
00086         stream.setCodec("UTF-8");
00087         stream << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
00088         stream << "<preferences>\n";
00089         if (contexts.size() > 0)
00090         {
00091             stream << "\t<level name=\"application\">\n";
00092             writeContexts(&contexts, stream);
00093             stream << "\t</level>\n";
00094         }
00095         if (pluginContexts.size() > 0)
00096         {
00097             stream << "\t<level name=\"plugin\">\n";
00098             writeContexts(&pluginContexts, stream);
00099             stream << "\t</level>\n";
00100         }
00101         stream << "</preferences>\n";
00102 
00103         prefsXML->close();
00104     }
00105     delete prefsXML;
00106 }
00107 
00108 void PrefsFile::writeContexts(ContextMap* contextMap, QTextStream& stream)
00109 {
00110     ContextMap::Iterator it;
00111     for (it = contextMap->begin(); it != contextMap->end(); ++it)
00112     {
00113         if ((it.value()->isPersistent()) && (!it.value()->isEmpty()))
00114         {
00115             stream << "\t\t<context name=\"" + replaceIllegalChars(it.key()) + "\">\n";
00116             AttributeMap::Iterator it2;
00117             PrefsContext* tmpCon = it.value();
00118             for (it2 = tmpCon->values.begin(); it2 != tmpCon->values.end(); ++it2)
00119             {
00120                 stream << "\t\t\t<attribute key=\"" + replaceIllegalChars(it2.key()) + "\" ";
00121                 stream << "value=\""  + replaceIllegalChars(it2.value()) + "\"/>\n";
00122             }
00123             TableMap::Iterator it3;
00124             for (it3 = tmpCon->tables.begin(); it3 != tmpCon->tables.end(); ++it3)
00125             {
00126                 stream << "\t\t\t<table name=\"" + replaceIllegalChars(it3.key()) + "\">\n";
00127                 PrefsTable* t = it3.value();
00128                 for (int i = 0; i < t->height(); ++i)
00129                 {
00130                     stream << QString("\t\t\t\t<row index=\"%1\">\n").arg(i);
00131                     for (int j = 0; j < t->width(); ++j)
00132                     {
00133                         stream << QString("\t\t\t\t\t<col index=\"%1\">").arg(j);
00134                         stream << replaceIllegalChars(t->get(i, j, "__NOT__SET__")) << "</col>\n";
00135                     }
00136                     stream << "\t\t\t\t</row>\n";
00137                 }
00138                 stream << "\t\t\t</table>\n";
00139             }
00140             stream << "\t\t</context>\n";
00141         }
00142     }
00143 }
00144 
00145 QString PrefsFile::replaceIllegalChars(const QString& text)
00146 {
00147     QString s = text;
00148     s.replace("&", "&amp;");
00149     s.replace("<", "&lt;");
00150     s.replace(">", "&gt;");
00151     s.replace("\"", "&quot;");
00152     s.replace("\'", "&apos;");
00153     return s;
00154 }
00155 
00156 void PrefsFile::canWrite()
00157 {
00158     if (ioEnabled)
00159     {
00160         QFile f(prefsFilePath);
00161         QFileInfo fi(f);
00162         if (fi.exists())
00163             ioEnabled = fi.isWritable();
00164         else
00165         {
00166             QFile f2(prefsFilePath.left(prefsFilePath.lastIndexOf("/")));
00167             QFileInfo fi2(f2);
00168             ioEnabled = fi2.isWritable();
00169         }
00170     }
00171 }
00172 
00173 PrefsFile::~PrefsFile()
00174 {
00175     ContextMap::Iterator it;
00176     for (it = contexts.begin(); it != contexts.end(); ++it)
00177         delete it.value();
00178     for (it = pluginContexts.begin(); it != pluginContexts.end(); ++it)
00179         delete it.value();
00180 }
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