autodoc/source/tools/tkpchars.cxx

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  30
  31 #include <precomp.h>
  32 #include <tools/tkpchars.hxx>
  33
  34 // NOT FULLY DECLARED SERVICES
  35 #include <cosv/bstream.hxx>
  36 #include <cosv/x.hxx>
  37
  38
  39
  40 CharacterSource::CharacterSource()
  41     :   dpSource(new char[2]),
  42         nSourceSize(0),
  43         nCurPos(0),
  44         nLastCut(0),
  45         nLastTokenStart(0),
  46         cCharAtLastCut(0)
  47 {
  48     dpSource[nSourceSize] = NULCH;
  49     dpSource[nSourceSize+1] = NULCH;
  50 }
  51
  52 CharacterSource::~CharacterSource()
  53 {
  54     delete [] dpSource;
  55 }
  56
  57 void
  58 CharacterSource::LoadText(csv::bstream & io_rSource)
  59 {
  60     if (dpSource != 0)
  61         delete [] dpSource;
  62
  63     io_rSource.seek(0, csv::end);
  64     nSourceSize = intt(io_rSource.position());
  65     io_rSource.seek(0);
  66
  67     dpSource = new char[nSourceSize+1];
  68
  69     intt nCount = (intt) io_rSource.read(dpSource,nSourceSize);
  70     if (nCount != nSourceSize)
  71         throw csv::X_Default("IO-Error: Could not load file completely.");
  72
  73     dpSource[nSourceSize] = NULCH;
  74
  75     BeginSource();
  76 }
  77
  78 ///  KORR_FUTURE:  So far, this works only when tokens do not cross inserted text boundaries.
  79 void
  80 CharacterSource::InsertTextAtCurPos( const char * i_sText2Insert )
  81 {
  82     if ( i_sText2Insert == 0 ? true : strlen(i_sText2Insert) == 0 )
  83         return;
  84
  85     aSourcesStack.push( S_SourceState(
  86                             dpSource,
  87                             nSourceSize,
  88                             nCurPos,
  89                             nLastCut,
  90                             nLastTokenStart,
  91                             cCharAtLastCut ) );
  92
  93     nSourceSize = strlen(i_sText2Insert);
  94     dpSource = new char[nSourceSize+1];
  95     strcpy( dpSource,  i_sText2Insert);     // SAFE STRCPY (#100211# - checked)
  96
  97     BeginSource();
  98 }
  99
 100 const char *
 101 CharacterSource::CutToken()
 102 {
 103     dpSource[nLastCut] = cCharAtLastCut;
 104     nLastTokenStart = nLastCut;
 105     nLastCut = CurPos();
 106     cCharAtLastCut = dpSource[nLastCut];
 107     dpSource[nLastCut] = NULCH;
 108
 109     return &dpSource[nLastTokenStart];
 110 }
 111
 112 void
 113 CharacterSource::BeginSource()
 114 {
 115     nCurPos = 0;
 116     nLastCut = 0;
 117     nLastTokenStart = 0;
 118     cCharAtLastCut = dpSource[nLastCut];
 119     dpSource[nLastCut] = NULCH;
 120 }
 121
 122 //  KORR_FUTURE:  So far, this works only when tokens do not cross inserted text boundaries.
 123 char
 124 CharacterSource::MoveOn_OverStack()
 125 {
 126     while ( aSourcesStack.size() > 0 AND nCurPos >= nSourceSize-1 )
 127     {
 128         S_SourceState & aState = aSourcesStack.top();
 129         delete [] dpSource;
 130
 131         dpSource = aState.dpSource;
 132         nSourceSize = aState.nSourceSize;
 133         nCurPos = aState.nCurPos;
 134         nLastCut = aState.nLastCut;
 135         nLastTokenStart = aState.nLastTokenStart;
 136         cCharAtLastCut = aState.cCharAtLastCut;
 137
 138         aSourcesStack.pop();
 139     }
 140
 141     if ( nLastCut < nCurPos )
 142         CutToken();
 143
 144     return CurChar();
 145 }
 146
 147 CharacterSource::
 148 S_SourceState::S_SourceState( DYN char *        dpSource_,
 149                               intt                      nSourceSize_,
 150                               intt                      nCurPos_,
 151                               intt                      nLastCut_,
 152                               intt                      nLastTokenStart_,
 153                               char                      cCharAtLastCut_ )
 154     :   dpSource(dpSource_),
 155         nSourceSize(nSourceSize_),
 156         nCurPos(nCurPos_),
 157         nLastCut(nLastCut_),
 158         nLastTokenStart(nLastTokenStart_),
 159         cCharAtLastCut(cCharAtLastCut_)
 160 {
 161 }
 162