ref: 17ebe55031ae6945ad1f671b69267a672328e4b1
dir: /sys/src/cmd/aux/antiword/tabstop.c/
/* * tabstops.c * Copyright (C) 1999-2004 A.J. van Os; Released under GNU GPL * * Description: * Read the tab stop information from a MS Word file */ #include <stdio.h> #include "antiword.h" #define HALF_INCH 36000L /* In millipoints */ static long lDefaultTabWidth = HALF_INCH; /* * vSet0DefaultTabWidth - */ static void vSet0DefaultTabWidth(const UCHAR *aucHeader) { USHORT usTmp; fail(aucHeader == NULL); usTmp = usGetWord(0x70, aucHeader); /* dxaTab */ DBG_DEC(usTmp); lDefaultTabWidth = usTmp == 0 ? HALF_INCH : lTwips2MilliPoints(usTmp); DBG_DEC(lDefaultTabWidth); } /* end of vSet0DefaultTabWidth */ /* * vSet2DefaultTabWidth - */ static void vSet2DefaultTabWidth(FILE *pFile, const UCHAR *aucHeader) { UCHAR *aucBuffer; ULONG ulBeginDocpInfo; size_t tDocpInfoLen; USHORT usTmp; fail(pFile == NULL || aucHeader == NULL); ulBeginDocpInfo = ulGetLong(0x112, aucHeader); /* fcDop */ DBG_HEX(ulBeginDocpInfo); tDocpInfoLen = (size_t)usGetWord(0x116, aucHeader); /* cbDop */ DBG_DEC(tDocpInfoLen); if (tDocpInfoLen < 12) { DBG_MSG("No TAB information"); return; } aucBuffer = xmalloc(tDocpInfoLen); if (!bReadBytes(aucBuffer, tDocpInfoLen, ulBeginDocpInfo, pFile)) { aucBuffer = xfree(aucBuffer); return; } usTmp = usGetWord(0x0a, aucBuffer); /* dxaTab */ lDefaultTabWidth = usTmp == 0 ? HALF_INCH : lTwips2MilliPoints(usTmp); DBG_DEC(lDefaultTabWidth); aucBuffer = xfree(aucBuffer); } /* end of vSet2DefaultTabWidth */ /* * vSet6DefaultTabWidth - */ static void vSet6DefaultTabWidth(FILE *pFile, ULONG ulStartBlock, const ULONG *aulBBD, size_t tBBDLen, const UCHAR *aucHeader) { UCHAR *aucBuffer; ULONG ulBeginDocpInfo; size_t tDocpInfoLen; USHORT usTmp; ulBeginDocpInfo = ulGetLong(0x150, aucHeader); /* fcDop */ DBG_HEX(ulBeginDocpInfo); tDocpInfoLen = (size_t)ulGetLong(0x154, aucHeader); /* lcbDop */ DBG_DEC(tDocpInfoLen); if (tDocpInfoLen < 12) { DBG_MSG("No TAB information"); return; } aucBuffer = xmalloc(tDocpInfoLen); if (!bReadBuffer(pFile, ulStartBlock, aulBBD, tBBDLen, BIG_BLOCK_SIZE, aucBuffer, ulBeginDocpInfo, tDocpInfoLen)) { aucBuffer = xfree(aucBuffer); return; } usTmp = usGetWord(0x0a, aucBuffer); /* dxaTab */ lDefaultTabWidth = usTmp == 0 ? HALF_INCH : lTwips2MilliPoints(usTmp); DBG_DEC(lDefaultTabWidth); aucBuffer = xfree(aucBuffer); } /* end of vSet6DefaultTabWidth */ /* * vSet8DefaultTabWidth - */ static void vSet8DefaultTabWidth(FILE *pFile, const pps_info_type *pPPS, const ULONG *aulBBD, size_t tBBDLen, const ULONG *aulSBD, size_t tSBDLen, const UCHAR *aucHeader) { const ULONG *aulBlockDepot; UCHAR *aucBuffer; ULONG ulBeginDocpInfo; size_t tDocpInfoLen, tBlockDepotLen, tBlockSize; USHORT usTmp; ulBeginDocpInfo = ulGetLong(0x192, aucHeader); /* fcDop */ DBG_HEX(ulBeginDocpInfo); tDocpInfoLen = (size_t)ulGetLong(0x196, aucHeader); /* lcbDop */ DBG_DEC(tDocpInfoLen); if (tDocpInfoLen < 12) { DBG_MSG("No TAB information"); return; } DBG_DEC(pPPS->tTable.ulSB); DBG_HEX(pPPS->tTable.ulSize); if (pPPS->tTable.ulSize == 0) { DBG_MSG("No TAB information"); return; } if (pPPS->tTable.ulSize < MIN_SIZE_FOR_BBD_USE) { /* Use the Small Block Depot */ aulBlockDepot = aulSBD; tBlockDepotLen = tSBDLen; tBlockSize = SMALL_BLOCK_SIZE; } else { /* Use the Big Block Depot */ aulBlockDepot = aulBBD; tBlockDepotLen = tBBDLen; tBlockSize = BIG_BLOCK_SIZE; } aucBuffer = xmalloc(tDocpInfoLen); if (!bReadBuffer(pFile, pPPS->tTable.ulSB, aulBlockDepot, tBlockDepotLen, tBlockSize, aucBuffer, ulBeginDocpInfo, tDocpInfoLen)) { aucBuffer = xfree(aucBuffer); return; } usTmp = usGetWord(0x0a, aucBuffer); /* dxaTab */ lDefaultTabWidth = usTmp == 0 ? HALF_INCH : lTwips2MilliPoints(usTmp); DBG_DEC(lDefaultTabWidth); aucBuffer = xfree(aucBuffer); } /* end of vSet8DefaultTabWidth */ /* * vSetDefaultTabWidth - */ void vSetDefaultTabWidth(FILE *pFile, const pps_info_type *pPPS, const ULONG *aulBBD, size_t tBBDLen, const ULONG *aulSBD, size_t tSBDLen, const UCHAR *aucHeader, int iWordVersion) { fail(pFile == NULL && iWordVersion >= 1); fail(pPPS == NULL && iWordVersion >= 6); fail(aulBBD == NULL && tBBDLen != 0); fail(aulSBD == NULL && tSBDLen != 0); fail(aucHeader == NULL); /* Reset to the default default value */ lDefaultTabWidth = HALF_INCH; switch (iWordVersion) { case 0: vSet0DefaultTabWidth(aucHeader); break; case 1: case 2: vSet2DefaultTabWidth(pFile, aucHeader); break; case 4: case 5: break; case 6: case 7: vSet6DefaultTabWidth(pFile, pPPS->tWordDocument.ulSB, aulBBD, tBBDLen, aucHeader); break; case 8: vSet8DefaultTabWidth(pFile, pPPS, aulBBD, tBBDLen, aulSBD, tSBDLen, aucHeader); break; default: werr(0, "Sorry, no TAB information"); break; } } /* end of vSetDefaultTabWidth */ #if 0 /* * lGetDefaultTabWidth - Get the default tabwidth in millipoints */ long lGetDefaultTabWidth(void) { if (lDefaultTabWidth <= 0) { DBG_DEC(lDefaultTabWidth); return lTwips2MilliPoints(1); } return lDefaultTabWidth; } /* end of lGetDefaultTabWidth */ #endif