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/*
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 * text.c
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 * Copyright (C) 1999-2004 A.J. van Os; Released under GNU GPL
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 *
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 * Description:
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 * Functions to deal with the Text format
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 *
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 */
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#include <string.h>
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#include "antiword.h"
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/* The character set */
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static encoding_type	eEncoding = encoding_neutral;
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/* Current vertical position information */
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static long		lYtopCurr = 0;
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/* Local representation of the non-breaking space */
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static UCHAR		ucNbsp = 0;
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/*
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 * vPrologueTXT - set options and perform the Text initialization
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 */
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void
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vPrologueTXT(diagram_type *pDiag, const options_type *pOptions)
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{
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	fail(pDiag == NULL);
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	fail(pOptions == NULL);
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	eEncoding = pOptions->eEncoding;
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	pDiag->lXleft = 0;
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	pDiag->lYtop = 0;
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	lYtopCurr = 0;
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} /* end of vPrologueTXT */
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/*
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 * vEpilogueTXT - clean up after everything is done
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 */
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void
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vEpilogueTXT(FILE *pOutFile)
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{
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	fail(pOutFile == NULL);
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	fprintf(pOutFile, "\n");
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} /* end of vEpilogueTXT */
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/*
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 * vPrintTXT - print a Text string
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 */
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static void
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vPrintTXT(FILE *pFile, const char *szString, size_t tStringLength)
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{
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	const UCHAR	*ucBytes;
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	size_t		tCount;
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	fail(szString == NULL);
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	if (szString == NULL || szString[0] == '\0' || tStringLength == 0) {
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		return;
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	}
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	if (eEncoding == encoding_utf_8) {
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		fprintf(pFile, "%.*s", (int)tStringLength, szString);
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		return;
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	}
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	if (ucNbsp == 0) {
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		ucNbsp = ucGetNbspCharacter();
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		DBG_HEX_C(ucNbsp != 0xa0, ucNbsp);
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	}
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	ucBytes = (UCHAR *)szString;
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	for (tCount = 0; tCount < tStringLength ; tCount++) {
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		if (ucBytes[tCount] == ucNbsp) {
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			(void)putc(' ', pFile);
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		} else {
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			(void)putc(szString[tCount], pFile);
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		}
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	}
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} /* end of vPrintTXT */
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/*
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 * vMoveTo - move to the given X,Y coordinates
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 *
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 * Move the current position of the given diagram to its X,Y coordinates,
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 * start on a new page if needed
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 */
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static void
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vMoveTo(diagram_type *pDiag)
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{
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	int	iCount, iNbr;
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	fail(pDiag == NULL);
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	fail(pDiag->pOutFile == NULL);
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	if (pDiag->lYtop != lYtopCurr) {
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		iNbr = iDrawUnits2Char(pDiag->lXleft);
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		for (iCount = 0; iCount < iNbr; iCount++) {
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			(void)putc(FILLER_CHAR, pDiag->pOutFile);
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		}
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		lYtopCurr = pDiag->lYtop;
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	}
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} /* end of vMoveTo */
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/*
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 * vMove2NextLineTXT - move to the next line
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 */
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void
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vMove2NextLineTXT(diagram_type *pDiag)
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{
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	fail(pDiag == NULL);
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	fail(pDiag->pOutFile == NULL);
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	pDiag->lYtop++;
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	(void)fprintf(pDiag->pOutFile, "\n");
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} /* end of vMove2NextLineTXT */
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/*
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 * vSubstringTXT - print a sub string
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 */
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void
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vSubstringTXT(diagram_type *pDiag,
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	const char *szString, size_t tStringLength, long lStringWidth)
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{
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	fail(pDiag == NULL || szString == NULL);
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	fail(pDiag->pOutFile == NULL);
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	fail(pDiag->lXleft < 0);
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	fail(tStringLength != strlen(szString));
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	if (szString[0] == '\0' || tStringLength == 0) {
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		return;
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	}
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	vMoveTo(pDiag);
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	vPrintTXT(pDiag->pOutFile, szString, tStringLength);
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	pDiag->lXleft += lStringWidth;
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} /* end of vSubstringTXT */
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/*
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 * Create an start of paragraph by moving the y-top mark
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 */
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void
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vStartOfParagraphTXT(diagram_type *pDiag, long lBeforeIndentation)
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{
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	fail(pDiag == NULL);
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	fail(lBeforeIndentation < 0);
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	if (lBeforeIndentation >= lTwips2MilliPoints(HEADING_GAP)) {
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		/* A large gap is replaced by an empty line */
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		vMove2NextLineTXT(pDiag);
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	}
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} /* end of vStartOfParagraphTXT */
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/*
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 * Create an end of paragraph by moving the y-top mark
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 */
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void
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vEndOfParagraphTXT(diagram_type *pDiag, long lAfterIndentation)
159 
{
160 
	fail(pDiag == NULL);
161 
	fail(pDiag->pOutFile == NULL);
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	fail(lAfterIndentation < 0);
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164 
	if (pDiag->lXleft > 0) {
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		/* To the start of the line */
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		vMove2NextLineTXT(pDiag);
167 
	}
168 
 
169 
	if (lAfterIndentation >= lTwips2MilliPoints(HEADING_GAP)) {
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		/* A large gap is replaced by an empty line */
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		vMove2NextLineTXT(pDiag);
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	}
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} /* end of vEndOfParagraphTXT */
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/*
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 * Create an end of page
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 */
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void
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vEndOfPageTXT(diagram_type *pDiag, long lAfterIndentation)
180 
{
181 
	vEndOfParagraphTXT(pDiag, lAfterIndentation);
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} /* end of vEndOfPageTXT */