okular/generators/dvi/fontEncoding.cpp

   1 // -*- Mode: C++; c-basic-offset: 2; indent-tabs-mode: nil; c-brace-offset: 0; -*-
   2 // fontEncoding.cpp
   3 //
   4 // Part of KDVI - A DVI previewer for the KDE desktop environment
   5 //
   6 // (C) 2003 Stefan Kebekus
   7 // Distributed under the GPL
   8
   9 #include <config.h>
  10
  11 #ifdef HAVE_FREETYPE
  12
  13 #include "fontEncoding.h"
  14 #include "kvs_debug.h"
  15
  16 #include <QFile>
  17 #include <QProcess>
  18 #include <QTextStream>
  19
  20 //#define DEBUG_FONTENC
  21
  22
  23 fontEncoding::fontEncoding(const QString &encName)
  24 {
  25 #ifdef DEBUG_FONTENC
  26   kDebug(kvs::dvi) << "fontEncoding( " << encName << " )";
  27 #endif
  28
  29   _isValid = false;
  30   // Use kpsewhich to find the encoding file.
  31   QProcess kpsewhich;
  32   kpsewhich.setReadChannelMode(QProcess::MergedChannels);
  33
  34   kpsewhich.start("kpsewhich",
  35                   QStringList() << encName,
  36                   QIODevice::ReadOnly|QIODevice::Text);
  37
  38   if (!kpsewhich.waitForStarted()) {
  39     kError(kvs::dvi) << "fontEncoding::fontEncoding(...): kpsewhich could not be started." << endl;
  40     return;
  41   }
  42
  43   // We wait here while the external program runs concurrently.
  44   kpsewhich.waitForFinished(-1);
  45
  46   const QString encFileName = QString(kpsewhich.readAll()).trimmed();
  47   if (encFileName.isEmpty()) {
  48     kError(kvs::dvi) << QString("fontEncoding::fontEncoding(...): The file '%1' could not be found by kpsewhich.").arg(encName) << endl;
  49     return;
  50   }
  51
  52 #ifdef DEBUG_FONTENC
  53   kDebug(kvs::dvi) << "FileName of the encoding: " << encFileName;
  54 #endif
  55
  56   QFile file( encFileName );
  57   if ( file.open( QIODevice::ReadOnly ) ) {
  58     // Read the file (excluding comments) into the QString variable
  59     // 'fileContent'
  60     QTextStream stream( &file );
  61     QString fileContent;
  62     while ( !stream.atEnd() )
  63       fileContent += stream.readLine().section('%', 0, 0); // line of text excluding '\n' until first '%'-sign
  64     file.close();
  65
  66     fileContent = fileContent.trimmed();
  67
  68     // Find the name of the encoding
  69     encodingFullName = fileContent.section('[', 0, 0).simplified().mid(1);
  70 #ifdef DEBUG_FONTENC
  71     kDebug(kvs::dvi) << "encodingFullName: " << encodingFullName;
  72 #endif
  73
  74     fileContent = fileContent.section('[', 1, 1).section(']',0,0).simplified();
  75     const QStringList glyphNameList = fileContent.split('/', QString::SkipEmptyParts);
  76
  77     int i = 0;
  78     for ( QStringList::ConstIterator it = glyphNameList.constBegin(); (it != glyphNameList.constEnd())&&(i<256); ++it ) {
  79       glyphNameVector[i] = (*it).simplified();
  80 #ifdef DEBUG_FONTENC
  81       kDebug(kvs::dvi) << i << ": " << glyphNameVector[i];
  82 #endif
  83       i++;
  84     }
  85     for(; i<256; i++)
  86       glyphNameVector[i] = ".notdef";
  87   } else {
  88     kError(kvs::dvi) << QString("fontEncoding::fontEncoding(...): The file '%1' could not be opened.").arg(encFileName) << endl;
  89     return;
  90   }
  91
  92   _isValid = true;
  93 }
  94
  95 #endif // HAVE_FREETYPE