source/afmscanner.h

   1 /* This file is part of Shapes.
   2  *
   3  * Shapes is free software: you can redistribute it and/or modify
   4  * it under the terms of the GNU General Public License as published by
   5  * the Free Software Foundation, either version 3 of the License, or
   6  * any later version.
   7  *
   8  * Shapes is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with Shapes.  If not, see <http://www.gnu.org/licenses/>.
  15  *
  16  * Copyright 2008 Henrik Tidefelt
  17  */
  18
  19 #pragma once
  20
  21 #include "fontmetrics.h"
  22 #include "characterencoding.h"
  23
  24 #ifndef FLEXINT_H                                                               // Else *FlexLexer will be defined twice
  25 #       undef yyFlexLexer
  26 #       define yyFlexLexer afmFlexLexer
  27 #       include <FlexLexer.h>
  28 #endif
  29
  30 class AfmScanner : public afmFlexLexer
  31 {
  32         FontMetrics::AFM * fontMetricsDst_;
  33         FontMetrics::SingleByte_WritingDirectionMetrics * horizontalMetrics_typed_; /* Same as fontMetricsDst_->horizontalMetrics_, but down-cast. */
  34         FontMetrics::SingleByte_WritingDirectionMetrics * verticalMetrics_typed_; /* Same as fontMetricsDst_->verticaalMetrics_, but down-cast. */
  35         FontMetrics::SingleByte_WritingDirectionMetrics * currentDirectionDst_;
  36         int currentDirectionID_; // This corresponds to currentDirectionDst_ and is initially -1, indicating not initialized
  37         int activateDirectionID_; // This is initially 0, and is changed by StartDirection and EndDirection
  38         unsigned char metricsSets_;
  39         FontMetrics::CharacterMetrics * currentCharacter_;
  40         FontMetrics::AFM::KernPairMap * currentKernPairMapX_;
  41         FontMetrics::AFM::KernPairMap * currentKernPairMapY_;
  42         const std::map< RefCountPtr< const char >, size_t, charRefPtrLess > * currentNameMap_;
  43         bool tellQue_; // write things we don't understand on stderr.
  44
  45         void throwError( const char * msg );
  46         void synchWritingDirection( );
  47
  48         const FontMetrics::CharacterEncoding * encoding_;
  49
  50  public:
  51         typedef int UnionType;
  52         UnionType yylval;
  53         AfmScanner( FontMetrics::AFM * fontMetricsDst, std::istream * yyin = 0 );
  54         virtual int yylex( );
  55         void setTellQue( bool tellQue ) { tellQue_ = tellQue; }
  56 };