TB9.2 Example Applications: examples/PIPS/antiword/src/text.c Source File

00001 /*
+00002  * text.c
+00003  * Copyright (C) 1999-2004 A.J. van Os; Released under GNU GPL
+00004  *
+00005  * Description:
+00006  * Functions to deal with the Text format
+00007  *
+00008  */
+00009 
+00010 #include <string.h>
+00011 #include "antiword.h"
+00012 
+00013 /* The character set */
+00014 static encoding_type    eEncoding = encoding_neutral;
+00015 /* Current vertical position information */
+00016 static long             lYtopCurr = 0;
+00017 /* Local representation of the non-breaking space */
+00018 static UCHAR            ucNbsp = 0;
+00019 
+00020 
+00021 /*
+00022  * vPrologueTXT - set options and perform the Text initialization
+00023  */
+00024 void
+00025 vPrologueTXT(diagram_type *pDiag, const options_type *pOptions)
+00026 {
+00027         fail(pDiag == NULL);
+00028         fail(pOptions == NULL);
+00029 
+00030         eEncoding = pOptions->eEncoding;
+00031         pDiag->lXleft = 0;
+00032         pDiag->lYtop = 0;
+00033         lYtopCurr = 0;
+00034 } /* end of vPrologueTXT */
+00035 
+00036 /*
+00037  * vEpilogueTXT - clean up after everything is done
+00038  */
+00039 void
+00040 vEpilogueTXT(FILE *pOutFile)
+00041 {
+00042         fail(pOutFile == NULL);
+00043 
+00044         fprintf(pOutFile, "\n");
+00045 } /* end of vEpilogueTXT */
+00046 
+00047 /*
+00048  * vPrintTXT - print a Text string
+00049  */
+00050 static void
+00051 vPrintTXT(FILE *pFile, const char *szString, size_t tStringLength)
+00052 {
+00053         const UCHAR     *ucBytes;
+00054         size_t          tCount;
+00055 
+00056         fail(szString == NULL);
+00057 
+00058         if (szString == NULL || szString[0] == '\0' || tStringLength == 0) {
+00059                 return;
+00060         }
+00061 
+00062         if (eEncoding == encoding_utf_8) {
+00063                 fprintf(pFile, "%.*s", (int)tStringLength, szString);
+00064                 return;
+00065         }
+00066 
+00067         if (ucNbsp == 0) {
+00068                 ucNbsp = ucGetNbspCharacter();
+00069                 DBG_HEX_C(ucNbsp != 0xa0, ucNbsp);
+00070         }
+00071 
+00072         ucBytes = (UCHAR *)szString;
+00073         for (tCount = 0; tCount < tStringLength ; tCount++) {
+00074                 if (ucBytes[tCount] == ucNbsp) {
+00075                         (void)putc(' ', pFile);
+00076                 } else {
+00077                         (void)putc(szString[tCount], pFile);
+00078                 }
+00079         }
+00080 } /* end of vPrintTXT */
+00081 
+00082 /*
+00083  * vMoveTo - move to the given X,Y coordinates
+00084  *
+00085  * Move the current position of the given diagram to its X,Y coordinates,
+00086  * start on a new page if needed
+00087  */
+00088 static void
+00089 vMoveTo(diagram_type *pDiag)
+00090 {
+00091         int     iCount, iNbr;
+00092 
+00093         fail(pDiag == NULL);
+00094         fail(pDiag->pOutFile == NULL);
+00095 
+00096         if (pDiag->lYtop != lYtopCurr) {
+00097                 iNbr = iDrawUnits2Char(pDiag->lXleft);
+00098                 for (iCount = 0; iCount < iNbr; iCount++) {
+00099                         (void)putc(FILLER_CHAR, pDiag->pOutFile);
+00100                 }
+00101                 lYtopCurr = pDiag->lYtop;
+00102         }
+00103 } /* end of vMoveTo */
+00104 
+00105 /*
+00106  * vMove2NextLineTXT - move to the next line
+00107  */
+00108 void
+00109 vMove2NextLineTXT(diagram_type *pDiag)
+00110 {
+00111         fail(pDiag == NULL);
+00112         fail(pDiag->pOutFile == NULL);
+00113 
+00114         pDiag->lYtop++;
+00115         (void)fprintf(pDiag->pOutFile, "\n");
+00116 } /* end of vMove2NextLineTXT */
+00117 
+00118 /*
+00119  * vSubstringTXT - print a sub string
+00120  */
+00121 void
+00122 vSubstringTXT(diagram_type *pDiag,
+00123         const char *szString, size_t tStringLength, long lStringWidth)
+00124 {
+00125         fail(pDiag == NULL || szString == NULL);
+00126         fail(pDiag->pOutFile == NULL);
+00127         fail(pDiag->lXleft < 0);
+00128         fail(tStringLength != strlen(szString));
+00129 
+00130         if (szString[0] == '\0' || tStringLength == 0) {
+00131                 return;
+00132         }
+00133 
+00134         vMoveTo(pDiag);
+00135         vPrintTXT(pDiag->pOutFile, szString, tStringLength);
+00136         pDiag->lXleft += lStringWidth;
+00137 } /* end of vSubstringTXT */
+00138 
+00139 /*
+00140  * Create an start of paragraph by moving the y-top mark
+00141  */
+00142 void
+00143 vStartOfParagraphTXT(diagram_type *pDiag, long lBeforeIndentation)
+00144 {
+00145         fail(pDiag == NULL);
+00146         fail(lBeforeIndentation < 0);
+00147 
+00148         if (lBeforeIndentation >= lTwips2MilliPoints(HEADING_GAP)) {
+00149                 /* A large gap is replaced by an empty line */
+00150                 vMove2NextLineTXT(pDiag);
+00151         }
+00152 } /* end of vStartOfParagraphTXT */
+00153 
+00154 /*
+00155  * Create an end of paragraph by moving the y-top mark
+00156  */
+00157 void
+00158 vEndOfParagraphTXT(diagram_type *pDiag, long lAfterIndentation)
+00159 {
+00160         fail(pDiag == NULL);
+00161         fail(pDiag->pOutFile == NULL);
+00162         fail(lAfterIndentation < 0);
+00163 
+00164         if (pDiag->lXleft > 0) {
+00165                 /* To the start of the line */
+00166                 vMove2NextLineTXT(pDiag);
+00167         }
+00168 
+00169         if (lAfterIndentation >= lTwips2MilliPoints(HEADING_GAP)) {
+00170                 /* A large gap is replaced by an empty line */
+00171                 vMove2NextLineTXT(pDiag);
+00172         }
+00173 } /* end of vEndOfParagraphTXT */
+00174 
+00175 /*
+00176  * Create an end of page
+00177  */
+00178 void
+00179 vEndOfPageTXT(diagram_type *pDiag, long lAfterIndentation)
+00180 {
+00181         vEndOfParagraphTXT(pDiag, lAfterIndentation);
+00182 } /* end of vEndOfPageTXT */
+