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/*
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* tabstops.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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* Read the tab stop information from a MS Word file
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*/
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#include <stdio.h>
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#include "antiword.h"
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#define HALF_INCH 36000L /* In millipoints */
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static long lDefaultTabWidth = HALF_INCH;
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/*
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* vSet0DefaultTabWidth -
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*/
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static void
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vSet0DefaultTabWidth(const UCHAR *aucHeader)
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{
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USHORT usTmp;
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fail(aucHeader == NULL);
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usTmp = usGetWord(0x70, aucHeader); /* dxaTab */
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DBG_DEC(usTmp);
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lDefaultTabWidth = usTmp == 0 ? HALF_INCH : lTwips2MilliPoints(usTmp);
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DBG_DEC(lDefaultTabWidth);
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} /* end of vSet0DefaultTabWidth */
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/*
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* vSet2DefaultTabWidth -
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*/
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static void
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vSet2DefaultTabWidth(FILE *pFile, const UCHAR *aucHeader)
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{
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UCHAR *aucBuffer;
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ULONG ulBeginDocpInfo;
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size_t tDocpInfoLen;
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USHORT usTmp;
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fail(pFile == NULL || aucHeader == NULL);
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ulBeginDocpInfo = ulGetLong(0x112, aucHeader); /* fcDop */
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DBG_HEX(ulBeginDocpInfo);
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tDocpInfoLen = (size_t)usGetWord(0x116, aucHeader); /* cbDop */
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DBG_DEC(tDocpInfoLen);
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if (tDocpInfoLen < 12) {
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DBG_MSG("No TAB information");
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return;
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}
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aucBuffer = xmalloc(tDocpInfoLen);
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if (!bReadBytes(aucBuffer, tDocpInfoLen, ulBeginDocpInfo, pFile)) {
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aucBuffer = xfree(aucBuffer);
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return;
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}
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usTmp = usGetWord(0x0a, aucBuffer); /* dxaTab */
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lDefaultTabWidth = usTmp == 0 ? HALF_INCH : lTwips2MilliPoints(usTmp);
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DBG_DEC(lDefaultTabWidth);
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aucBuffer = xfree(aucBuffer);
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} /* end of vSet2DefaultTabWidth */
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/*
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* vSet6DefaultTabWidth -
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*/
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static void
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vSet6DefaultTabWidth(FILE *pFile, ULONG ulStartBlock,
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const ULONG *aulBBD, size_t tBBDLen, const UCHAR *aucHeader)
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{
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UCHAR *aucBuffer;
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ULONG ulBeginDocpInfo;
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size_t tDocpInfoLen;
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USHORT usTmp;
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ulBeginDocpInfo = ulGetLong(0x150, aucHeader); /* fcDop */
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DBG_HEX(ulBeginDocpInfo);
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tDocpInfoLen = (size_t)ulGetLong(0x154, aucHeader); /* lcbDop */
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DBG_DEC(tDocpInfoLen);
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if (tDocpInfoLen < 12) {
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DBG_MSG("No TAB information");
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return;
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}
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aucBuffer = xmalloc(tDocpInfoLen);
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if (!bReadBuffer(pFile, ulStartBlock,
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aulBBD, tBBDLen, BIG_BLOCK_SIZE,
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aucBuffer, ulBeginDocpInfo, tDocpInfoLen)) {
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aucBuffer = xfree(aucBuffer);
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return;
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}
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usTmp = usGetWord(0x0a, aucBuffer); /* dxaTab */
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lDefaultTabWidth = usTmp == 0 ? HALF_INCH : lTwips2MilliPoints(usTmp);
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DBG_DEC(lDefaultTabWidth);
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aucBuffer = xfree(aucBuffer);
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} /* end of vSet6DefaultTabWidth */
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/*
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* vSet8DefaultTabWidth -
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*/
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static void
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vSet8DefaultTabWidth(FILE *pFile, const pps_info_type *pPPS,
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const ULONG *aulBBD, size_t tBBDLen,
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const ULONG *aulSBD, size_t tSBDLen,
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const UCHAR *aucHeader)
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{
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const ULONG *aulBlockDepot;
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UCHAR *aucBuffer;
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ULONG ulBeginDocpInfo;
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size_t tDocpInfoLen, tBlockDepotLen, tBlockSize;
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USHORT usTmp;
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ulBeginDocpInfo = ulGetLong(0x192, aucHeader); /* fcDop */
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DBG_HEX(ulBeginDocpInfo);
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tDocpInfoLen = (size_t)ulGetLong(0x196, aucHeader); /* lcbDop */
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DBG_DEC(tDocpInfoLen);
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if (tDocpInfoLen < 12) {
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DBG_MSG("No TAB information");
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return;
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}
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DBG_DEC(pPPS->tTable.ulSB);
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DBG_HEX(pPPS->tTable.ulSize);
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if (pPPS->tTable.ulSize == 0) {
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DBG_MSG("No TAB information");
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return;
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}
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if (pPPS->tTable.ulSize < MIN_SIZE_FOR_BBD_USE) {
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/* Use the Small Block Depot */
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aulBlockDepot = aulSBD;
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tBlockDepotLen = tSBDLen;
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tBlockSize = SMALL_BLOCK_SIZE;
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} else {
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/* Use the Big Block Depot */
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aulBlockDepot = aulBBD;
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tBlockDepotLen = tBBDLen;
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tBlockSize = BIG_BLOCK_SIZE;
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}
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aucBuffer = xmalloc(tDocpInfoLen);
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if (!bReadBuffer(pFile, pPPS->tTable.ulSB,
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aulBlockDepot, tBlockDepotLen, tBlockSize,
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aucBuffer, ulBeginDocpInfo, tDocpInfoLen)) {
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aucBuffer = xfree(aucBuffer);
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return;
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}
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usTmp = usGetWord(0x0a, aucBuffer); /* dxaTab */
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lDefaultTabWidth = usTmp == 0 ? HALF_INCH : lTwips2MilliPoints(usTmp);
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DBG_DEC(lDefaultTabWidth);
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aucBuffer = xfree(aucBuffer);
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} /* end of vSet8DefaultTabWidth */
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/*
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* vSetDefaultTabWidth -
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*/
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void
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vSetDefaultTabWidth(FILE *pFile, const pps_info_type *pPPS,
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const ULONG *aulBBD, size_t tBBDLen,
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const ULONG *aulSBD, size_t tSBDLen,
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const UCHAR *aucHeader, int iWordVersion)
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{
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fail(pFile == NULL && iWordVersion >= 1);
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fail(pPPS == NULL && iWordVersion >= 6);
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fail(aulBBD == NULL && tBBDLen != 0);
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fail(aulSBD == NULL && tSBDLen != 0);
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fail(aucHeader == NULL);
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/* Reset to the default default value */
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lDefaultTabWidth = HALF_INCH;
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switch (iWordVersion) {
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case 0:
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vSet0DefaultTabWidth(aucHeader);
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break;
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case 1:
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case 2:
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vSet2DefaultTabWidth(pFile, aucHeader);
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break;
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case 4:
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case 5:
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break;
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case 6:
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case 7:
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vSet6DefaultTabWidth(pFile, pPPS->tWordDocument.ulSB,
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aulBBD, tBBDLen, aucHeader);
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break;
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case 8:
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vSet8DefaultTabWidth(pFile, pPPS,
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aulBBD, tBBDLen, aulSBD, tSBDLen, aucHeader);
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break;
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default:
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werr(0, "Sorry, no TAB information");
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break;
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}
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} /* end of vSetDefaultTabWidth */
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#if 0
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/*
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* lGetDefaultTabWidth - Get the default tabwidth in millipoints
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*/
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long
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lGetDefaultTabWidth(void)
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{
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if (lDefaultTabWidth <= 0) {
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DBG_DEC(lDefaultTabWidth);
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return lTwips2MilliPoints(1);
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}
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return lDefaultTabWidth;
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} /* end of lGetDefaultTabWidth */
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#endif
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