text.c

   1 /*
   2  * text.c
   3  * Copyright (C) 1999-2004 A.J. van Os; Released under GNU GPL
   4  *
   5  * Description:
   6  * Functions to deal with the Text format
   7  *
   8  */
   9
  10 #include <string.h>
  11 #include "antiword.h"
  12
  13 /* The character set */
  14 static encoding_type    eEncoding = encoding_neutral;
  15 /* Current vertical position information */
  16 static long             lYtopCurr = 0;
  17 /* Local representation of the non-breaking space */
  18 static UCHAR            ucNbsp = 0;
  19
  20
  21 /*
  22  * vPrologueTXT - set options and perform the Text initialization
  23  */
  24 void
  25 vPrologueTXT(diagram_type *pDiag, const options_type *pOptions)
  26 {
  27         fail(pDiag == NULL);
  28         fail(pOptions == NULL);
  29
  30         eEncoding = pOptions->eEncoding;
  31         pDiag->lXleft = 0;
  32         pDiag->lYtop = 0;
  33         lYtopCurr = 0;
  34 } /* end of vPrologueTXT */
  35
  36 /*
  37  * vEpilogueTXT - clean up after everything is done
  38  */
  39 void
  40 vEpilogueTXT(FILE *pOutFile)
  41 {
  42         fail(pOutFile == NULL);
  43
  44         fprintf(pOutFile, "\n");
  45 } /* end of vEpilogueTXT */
  46
  47 /*
  48  * vPrintTXT - print a Text string
  49  */
  50 static void
  51 vPrintTXT(FILE *pFile, const char *szString, size_t tStringLength)
  52 {
  53         const UCHAR     *ucBytes;
  54         size_t          tCount;
  55
  56         fail(szString == NULL);
  57
  58         if (szString == NULL || szString[0] == '\0' || tStringLength == 0) {
  59                 return;
  60         }
  61
  62         if (eEncoding == encoding_utf_8) {
  63                 fprintf(pFile, "%.*s", (int)tStringLength, szString);
  64                 return;
  65         }
  66
  67         if (ucNbsp == 0) {
  68                 ucNbsp = ucGetNbspCharacter();
  69                 DBG_HEX_C(ucNbsp != 0xa0, ucNbsp);
  70         }
  71
  72         ucBytes = (UCHAR *)szString;
  73         for (tCount = 0; tCount < tStringLength ; tCount++) {
  74                 if (ucBytes[tCount] == ucNbsp) {
  75                         (void)putc(' ', pFile);
  76                 } else {
  77                         (void)putc(szString[tCount], pFile);
  78                 }
  79         }
  80 } /* end of vPrintTXT */
  81
  82 /*
  83  * vMoveTo - move to the given X,Y coordinates
  84  *
  85  * Move the current position of the given diagram to its X,Y coordinates,
  86  * start on a new page if needed
  87  */
  88 static void
  89 vMoveTo(diagram_type *pDiag)
  90 {
  91         int     iCount, iNbr;
  92
  93         fail(pDiag == NULL);
  94         fail(pDiag->pOutFile == NULL);
  95
  96         if (pDiag->lYtop != lYtopCurr) {
  97                 iNbr = iDrawUnits2Char(pDiag->lXleft);
  98                 for (iCount = 0; iCount < iNbr; iCount++) {
  99                         (void)putc(FILLER_CHAR, pDiag->pOutFile);
 100                 }
 101                 lYtopCurr = pDiag->lYtop;
 102         }
 103 } /* end of vMoveTo */
 104
 105 /*
 106  * vMove2NextLineTXT - move to the next line
 107  */
 108 void
 109 vMove2NextLineTXT(diagram_type *pDiag)
 110 {
 111         fail(pDiag == NULL);
 112         fail(pDiag->pOutFile == NULL);
 113
 114         pDiag->lYtop++;
 115         (void)fprintf(pDiag->pOutFile, "\n");
 116 } /* end of vMove2NextLineTXT */
 117
 118 /*
 119  * vSubstringTXT - print a sub string
 120  */
 121 void
 122 vSubstringTXT(diagram_type *pDiag,
 123         const char *szString, size_t tStringLength, long lStringWidth)
 124 {
 125         fail(pDiag == NULL || szString == NULL);
 126         fail(pDiag->pOutFile == NULL);
 127         fail(pDiag->lXleft < 0);
 128         fail(tStringLength != strlen(szString));
 129
 130         if (szString[0] == '\0' || tStringLength == 0) {
 131                 return;
 132         }
 133
 134         vMoveTo(pDiag);
 135         vPrintTXT(pDiag->pOutFile, szString, tStringLength);
 136         pDiag->lXleft += lStringWidth;
 137 } /* end of vSubstringTXT */
 138
 139 /*
 140  * Create an start of paragraph by moving the y-top mark
 141  */
 142 void
 143 vStartOfParagraphTXT(diagram_type *pDiag, long lBeforeIndentation)
 144 {
 145         fail(pDiag == NULL);
 146         fail(lBeforeIndentation < 0);
 147
 148         if (lBeforeIndentation >= lTwips2MilliPoints(HEADING_GAP)) {
 149                 /* A large gap is replaced by an empty line */
 150                 vMove2NextLineTXT(pDiag);
 151         }
 152 } /* end of vStartOfParagraphTXT */
 153
 154 /*
 155  * Create an end of paragraph by moving the y-top mark
 156  */
 157 void
 158 vEndOfParagraphTXT(diagram_type *pDiag, long lAfterIndentation)
 159 {
 160         fail(pDiag == NULL);
 161         fail(pDiag->pOutFile == NULL);
 162         fail(lAfterIndentation < 0);
 163
 164         if (pDiag->lXleft > 0) {
 165                 /* To the start of the line */
 166                 vMove2NextLineTXT(pDiag);
 167         }
 168
 169         if (lAfterIndentation >= lTwips2MilliPoints(HEADING_GAP)) {
 170                 /* A large gap is replaced by an empty line */
 171                 vMove2NextLineTXT(pDiag);
 172         }
 173 } /* end of vEndOfParagraphTXT */
 174
 175 /*
 176  * Create an end of page
 177  */
 178 void
 179 vEndOfPageTXT(diagram_type *pDiag, long lAfterIndentation)
 180 {
 181         vEndOfParagraphTXT(pDiag, lAfterIndentation);
 182 } /* end of vEndOfPageTXT */