examples/PIPS/antiword/src/text.c

/*
 * text.c
 * Copyright (C) 1999-2004 A.J. van Os; Released under GNU GPL
 *
 * Description:
 * Functions to deal with the Text format
 *
 */

#include <string.h>
#include "antiword.h"

/* The character set */
static encoding_type    eEncoding = encoding_neutral;
/* Current vertical position information */
static long             lYtopCurr = 0;
/* Local representation of the non-breaking space */
static UCHAR            ucNbsp = 0;


/*
 * vPrologueTXT - set options and perform the Text initialization
 */
void
vPrologueTXT(diagram_type *pDiag, const options_type *pOptions)
{
        fail(pDiag == NULL);
        fail(pOptions == NULL);

        eEncoding = pOptions->eEncoding;
        pDiag->lXleft = 0;
        pDiag->lYtop = 0;
        lYtopCurr = 0;
} /* end of vPrologueTXT */

/*
 * vEpilogueTXT - clean up after everything is done
 */
void
vEpilogueTXT(FILE *pOutFile)
{
        fail(pOutFile == NULL);

        fprintf(pOutFile, "\n");
} /* end of vEpilogueTXT */

/*
 * vPrintTXT - print a Text string
 */
static void
vPrintTXT(FILE *pFile, const char *szString, size_t tStringLength)
{
        const UCHAR     *ucBytes;
        size_t          tCount;

        fail(szString == NULL);

        if (szString == NULL || szString[0] == '\0' || tStringLength == 0) {
                return;
        }

        if (eEncoding == encoding_utf_8) {
                fprintf(pFile, "%.*s", (int)tStringLength, szString);
                return;
        }

        if (ucNbsp == 0) {
                ucNbsp = ucGetNbspCharacter();
                DBG_HEX_C(ucNbsp != 0xa0, ucNbsp);
        }

        ucBytes = (UCHAR *)szString;
        for (tCount = 0; tCount < tStringLength ; tCount++) {
                if (ucBytes[tCount] == ucNbsp) {
                        (void)putc(' ', pFile);
                } else {
                        (void)putc(szString[tCount], pFile);
                }
        }
} /* end of vPrintTXT */

/*
 * vMoveTo - move to the given X,Y coordinates
 *
 * Move the current position of the given diagram to its X,Y coordinates,
 * start on a new page if needed
 */
static void
vMoveTo(diagram_type *pDiag)
{
        int     iCount, iNbr;

        fail(pDiag == NULL);
        fail(pDiag->pOutFile == NULL);

        if (pDiag->lYtop != lYtopCurr) {
                iNbr = iDrawUnits2Char(pDiag->lXleft);
                for (iCount = 0; iCount < iNbr; iCount++) {
                        (void)putc(FILLER_CHAR, pDiag->pOutFile);
                }
                lYtopCurr = pDiag->lYtop;
        }
} /* end of vMoveTo */

/*
 * vMove2NextLineTXT - move to the next line
 */
void
vMove2NextLineTXT(diagram_type *pDiag)
{
        fail(pDiag == NULL);
        fail(pDiag->pOutFile == NULL);

        pDiag->lYtop++;
        (void)fprintf(pDiag->pOutFile, "\n");
} /* end of vMove2NextLineTXT */

/*
 * vSubstringTXT - print a sub string
 */
void
vSubstringTXT(diagram_type *pDiag,
        const char *szString, size_t tStringLength, long lStringWidth)
{
        fail(pDiag == NULL || szString == NULL);
        fail(pDiag->pOutFile == NULL);
        fail(pDiag->lXleft < 0);
        fail(tStringLength != strlen(szString));

        if (szString[0] == '\0' || tStringLength == 0) {
                return;
        }

        vMoveTo(pDiag);
        vPrintTXT(pDiag->pOutFile, szString, tStringLength);
        pDiag->lXleft += lStringWidth;
} /* end of vSubstringTXT */

/*
 * Create an start of paragraph by moving the y-top mark
 */
void
vStartOfParagraphTXT(diagram_type *pDiag, long lBeforeIndentation)
{
        fail(pDiag == NULL);
        fail(lBeforeIndentation < 0);

        if (lBeforeIndentation >= lTwips2MilliPoints(HEADING_GAP)) {
                /* A large gap is replaced by an empty line */
                vMove2NextLineTXT(pDiag);
        }
} /* end of vStartOfParagraphTXT */

/*
 * Create an end of paragraph by moving the y-top mark
 */
void
vEndOfParagraphTXT(diagram_type *pDiag, long lAfterIndentation)
{
        fail(pDiag == NULL);
        fail(pDiag->pOutFile == NULL);
        fail(lAfterIndentation < 0);

        if (pDiag->lXleft > 0) {
                /* To the start of the line */
                vMove2NextLineTXT(pDiag);
        }

        if (lAfterIndentation >= lTwips2MilliPoints(HEADING_GAP)) {
                /* A large gap is replaced by an empty line */
                vMove2NextLineTXT(pDiag);
        }
} /* end of vEndOfParagraphTXT */

/*
 * Create an end of page
 */
void
vEndOfPageTXT(diagram_type *pDiag, long lAfterIndentation)
{
        vEndOfParagraphTXT(pDiag, lAfterIndentation);
} /* end of vEndOfPageTXT */

---