int16 TTCOffsetTableOffset( /* 0 */ CONST unsigned char * puchSrcBuffer, /* input TTF or TTC buffer */ /* 1 */ CONST unsigned long ulSrcBufferSize, /* size of input TTF or TTC buffer data */ /* 6 */ CONST unsigned short usTTCIndex, /* TTC Index, only used if TTC bit set */ uint32 *pulOffsetTableOffset) { CONST_TTFACC_FILEBUFFERINFO InputBufferInfo; int16 errCode = NO_ERROR; TTC_HEADER TTCHeader; uint16 usBytesRead; uint32 ulOffset; InputBufferInfo.puchBuffer = puchSrcBuffer; InputBufferInfo.ulBufferSize = ulSrcBufferSize; InputBufferInfo.ulOffsetTableOffset = *pulOffsetTableOffset = 0; InputBufferInfo.lpfnReAllocate = NULL; /* can't reallocate input buffer */ if ((errCode = ReadGeneric((TTFACC_FILEBUFFERINFO *) &InputBufferInfo, (uint8 *) &TTCHeader, SIZEOF_TTC_HEADER, TTC_HEADER_CONTROL, 0, &usBytesRead)) != NO_ERROR) return(errCode); ulOffset = usBytesRead; if (TTCHeader.TTCTag != TTC_LONG_TAG) /* this isn't a ttc */ return ERR_NOT_TTC; /* offset set correctly for ttf */ if (usTTCIndex >= TTCHeader.DirectoryCount) return ERR_INVALID_TTC_INDEX; ulOffset += GetGenericSize(LONG_CONTROL) * usTTCIndex; if ((errCode = ReadLong((TTFACC_FILEBUFFERINFO *) &InputBufferInfo, pulOffsetTableOffset, ulOffset)) != NO_ERROR) return(errCode); return errCode; }
int16 MortAutoMap(TTFACC_FILEBUFFERINFO * pInputBufferInfo, /* ttfacc info */ uint8 * pabKeepGlyphs, /* binary list of glyphs to keep - to be updated here */ uint16 usnGlyphs, /* number of glyphs in list */ uint16 fKeepFlag) { MORTBINSRCHHEADER MortBinSrchHeader; MORTLOOKUPSINGLE MortLookup; uint16 nEntries; uint16 usBytesRead; uint32 ulOffset; uint32 ulLength; uint32 ulLastOffset; int16 errCode = NO_ERROR; ulOffset = TTTableOffset( pInputBufferInfo, MORT_TAG ); ulLength = TTTableLength( pInputBufferInfo, MORT_TAG ); ulLastOffset = ulOffset+ulLength; if (ulOffset == DIRECTORY_ERROR || ulLength == 0) /* nothing to map, we're done */ return NO_ERROR; ulOffset += GetGenericSize(MORTHEADER_CONTROL); /* skip over mortheader */ if ((errCode = ReadGeneric( pInputBufferInfo, (uint8 *)&MortBinSrchHeader, SIZEOF_MORTBINSRCHHEADER, MORTBINSRCHHEADER_CONTROL, ulOffset, &usBytesRead ) )!= NO_ERROR) return errCode; ulOffset += usBytesRead; for ( nEntries = MortBinSrchHeader.nEntries; nEntries > 0 && ulOffset < ulLastOffset; nEntries--) { if ((errCode = ReadGeneric( pInputBufferInfo, (uint8 *)&MortLookup, SIZEOF_MORTLOOKUPSINGLE, MORTLOOKUPSINGLE_CONTROL, ulOffset, &usBytesRead ) )!= NO_ERROR) return errCode; ulOffset += usBytesRead; if ( MortLookup.glyphid1 < usnGlyphs && pabKeepGlyphs[MortLookup.glyphid1] == fKeepFlag && MortLookup.glyphid2 < usnGlyphs && pabKeepGlyphs[MortLookup.glyphid2] == 0) pabKeepGlyphs[MortLookup.glyphid2] = (uint8)(fKeepFlag + 1); /* set this value too */ } return NO_ERROR; }
PRIVATE int16 GetGlyphStats( TTFACC_FILEBUFFERINFO * pInputBufferInfo, uint16 usGlyphIdx, int16 * psnContours, uint16 * pusnPoints, uint16 * pusnInstructions, uint16 indexToLocFormat, uint32 ulLocaOffset, uint32 ulGlyfOffset, BOOL *bStatus ) { uint32 ulOffset; uint16 usLength; GLYF_HEADER GlyfHeader; uint32 ulLastPointOffset; int16 errCode; *psnContours = 0; *pusnPoints = 0; *pusnInstructions = 0; *bStatus = FALSE; /* assume no glyph there */ if ((errCode = GetGlyphHeader( pInputBufferInfo, usGlyphIdx, indexToLocFormat, ulLocaOffset, ulGlyfOffset, &GlyfHeader, &ulOffset, &usLength )) != NO_ERROR) return errCode; if ( usLength == 0 ) return( NO_ERROR ); *psnContours = GlyfHeader.numberOfContours; if (*psnContours > 0) { /* calculate offset of last point */ ulLastPointOffset = ulOffset + GetGenericSize( GLYF_HEADER_CONTROL ) + (*psnContours-1) * sizeof( uint16 ); if ((errCode = ReadWord( pInputBufferInfo, pusnPoints, ulLastPointOffset)) != NO_ERROR) return errCode; (*pusnPoints)++; if ((errCode = ReadWord( pInputBufferInfo, pusnInstructions, ulLastPointOffset + sizeof(uint16))) != NO_ERROR) return errCode; } *bStatus = TRUE; return( NO_ERROR ); }
int16 ModVDMX(CONST_TTFACC_FILEBUFFERINFO * pInputBufferInfo, TTFACC_FILEBUFFERINFO * pOutputBufferInfo, CONST uint16 usFormat, uint32 *pulNewOutOffset) { VDMX Vdmx; uint32 ulSrcOffset; /* offset to Src VDMX table */ uint32 ulSrcLength; /* length of Src VDMX table */ uint32 ulDestOffset; /* offset to Dest VDMX table */ uint32 ulDestLength; /* length of Dest VDMX table */ uint32 ulSrcOffsetRatios; /* absolute offset to Ratios in Src file */ uint32 ulSrcOffsetOffsets; /* absolute offset to Offsets in Src file */ uint32 ulSrcOffsetGroups; /* absolute offset to Groups in Src file */ uint32 ulDestOffsetRatios; /* absolute offset to Ratios in Dest file */ uint32 ulDestOffsetOffsets; /* absolute offset to Offsets in Dest file */ uint32 ulDestOffsetGroups; /* absolute offset to Groups in Dest file */ uint16 usCurrGroupSrcOffset; /* relative offset from beginning of VDMX table */ uint16 usCurrGroupDestOffset; /* relative offset from beginning of VDMX table */ uint32 ulCurrGroupDestOffset=0; /* relative offset from beginning of VDMX table - long value */ uint16 usGroupDestOffset; /* relative offset from beginning of VDMX table, local copy for writing */ uint16 ----cRatioIndex,usDestRatioIndex; uint16 i; uint16 usBytesRead; uint16 usBytesWritten; uint32 ulBytesRead; int16 errCode=NO_ERROR; VDMXRatio *SrcRatioArray=NULL; int8 *KeepSrcRatioArray = NULL; /* parallel array to SrcRatioArray */ VDMXGroup GroupHeader; uint8 * pGroupBuffer=NULL; uint32 ulGroupBufferLength; /* total length of the Group Buffer (from source file) */ uint32 ulGroupLength; /* length of individual group to be read */ uint16 usGroupCount = 0; uint16 usKeepRatioCount = 0; uint16 usRatioSize; uint16 xRatio, yRatio; /* for reducing the ratios */ int16 Found1to1; GROUPOFFSETRECORDKEEPER keeper; TTFACC_FILEBUFFERINFO * pUnCONSTInputBufferInfo; if (usFormat == TTFDELTA_DELTA) /* only formats for which this is not valid */ { MarkTableForDeletion(pOutputBufferInfo, VDMX_TAG); return errCode; } pUnCONSTInputBufferInfo = (TTFACC_FILEBUFFERINFO *) pInputBufferInfo; /* used for Read functions ONLY. Not for Write */ /* get input buffer information */ ulSrcOffset = TTTableOffset( pUnCONSTInputBufferInfo, VDMX_TAG ); if ( ulSrcOffset == 0L ) return NO_ERROR; ulSrcLength = TTTableLength( pUnCONSTInputBufferInfo, VDMX_TAG ); if ( ulSrcLength == 0L ) { MarkTableForDeletion(pOutputBufferInfo, VDMX_TAG); return NO_ERROR; } /* get output buffer information */ if ((errCode = ZeroLongWordAlign(pOutputBufferInfo, *pulNewOutOffset, &ulDestOffset)) != NO_ERROR) return errCode; if ((errCode = ReadGeneric( pUnCONSTInputBufferInfo, (uint8 *) &Vdmx, SIZEOF_VDMX, VDMX_CONTROL, ulSrcOffset, &usBytesRead )) != NO_ERROR) return errCode; if (Vdmx.numRatios == 0) { MarkTableForDeletion(pOutputBufferInfo, VDMX_TAG); return NO_ERROR; } ulSrcOffsetRatios = ulSrcOffset + usBytesRead; ulSrcOffsetOffsets = ulSrcOffsetRatios + GetGenericSize(VDMXRATIO_CONTROL) * Vdmx.numRatios; ulSrcOffsetGroups = ulSrcOffsetOffsets + sizeof(uint16) * Vdmx.numRatios; memset(&keeper, 0, sizeof(keeper)); SrcRatioArray = (VDMXRatio *)Mem_Alloc(Vdmx.numRatios * sizeof(VDMXRatio)); if (SrcRatioArray == NULL) errCode = ERR_MEM; else { KeepSrcRatioArray = (int8 *)Mem_Alloc(Vdmx.numRatios * sizeof(int8)); if (KeepSrcRatioArray == NULL) errCode = ERR_MEM; else errCode = ReadGenericRepeat(pUnCONSTInputBufferInfo, (uint8 *) SrcRatioArray, VDMXRATIO_CONTROL, ulSrcOffsetRatios, &ulBytesRead, Vdmx.numRatios, SIZEOF_VDMXRATIO ); } while (errCode == NO_ERROR) /* while is so we can break out. Only go once through */ { Found1to1 = FALSE; for (i = 0; i < Vdmx.numRatios ; ++i) /* keep all 1:1 aspect ratios */ { KeepSrcRatioArray[i] = 1; /* assume we'll keep it */ xRatio = SrcRatioArray[i].xRatio; yRatio = SrcRatioArray[i].yStartRatio; ReduceRatio(&xRatio,&yRatio); if (xRatio == yRatio) { if (SrcRatioArray[i].xRatio == 0) /* anything after 0:0 is ignored */ { if (!Found1to1) /* need to keep this one */ ++usKeepRatioCount; break; } if (Found1to1) /* already have one */ KeepSrcRatioArray[i] = 0; /* don't keep this one */ else { Found1to1 = TRUE; ++usKeepRatioCount; } } else if (xRatio == EGA_X_RATIO && yRatio == EGA_Y_RATIO) KeepSrcRatioArray[i] = 0; /* don't keep this one */ else ++usKeepRatioCount; } if ((usKeepRatioCount == 0) || (usKeepRatioCount == Vdmx.numRatios)) { /* don't change a thing */ Mem_Free(SrcRatioArray); Mem_Free(KeepSrcRatioArray); return CopyTableOver(pOutputBufferInfo, pInputBufferInfo, VDMX_TAG, pulNewOutOffset); } ulDestOffsetRatios = ulDestOffset + usBytesRead; /* figure out offset for the Offset array */ ulDestOffsetOffsets = ulDestOffsetRatios + GetGenericSize(VDMXRATIO_CONTROL) * usKeepRatioCount; ulDestOffsetGroups = ulDestOffsetOffsets + sizeof(uint16) * usKeepRatioCount; usRatioSize = GetGenericSize(VDMXRATIO_CONTROL); ulCurrGroupDestOffset = ulDestOffsetGroups - ulDestOffset; /* calculate offset from start of VDMX table */ if ((errCode = InitGroupOffsetArray(&keeper,usKeepRatioCount)) != NO_ERROR) /* initialize structure to track offset re-use */ break; ulGroupBufferLength = ulSrcLength - (ulSrcOffsetGroups - ulSrcOffset); /* calculate the length of the group section */ pGroupBuffer = (uint8 *)Mem_Alloc(ulGroupBufferLength); /* allocate buffer the size of the group buffer */ if (pGroupBuffer == NULL) { errCode = ERR_MEM; break; } for (----cRatioIndex = usDestRatioIndex = 0; ----cRatioIndex < Vdmx.numRatios && usDestRatioIndex < usKeepRatioCount; ++----cRatioIndex) /* keep all 1:1 aspect ratios */ { if (KeepSrcRatioArray[----cRatioIndex] == 1) { /* write out the Ratio to the proper location */ if ((errCode = WriteGeneric(pOutputBufferInfo, (uint8 *) &(SrcRatioArray[----cRatioIndex]), SIZEOF_VDMXRATIO, VDMXRATIO_CONTROL, ulDestOffsetRatios + (usDestRatioIndex * usRatioSize), &usBytesWritten)) != NO_ERROR) break; /* now read the offset to the group */ if ((errCode = ReadWord(pUnCONSTInputBufferInfo, &usCurrGroupSrcOffset, ulSrcOffsetOffsets + (----cRatioIndex * sizeof(uint16)) )) != NO_ERROR) break; /* check if offset already used */ if ((usGroupDestOffset = LookupGroupOffset(&keeper, usCurrGroupSrcOffset)) == 0) /* not there already */ { if (ulCurrGroupDestOffset > USHRT_MAX) /* check if will fit in unsigned short */ { errCode = ERR_INVALID_VDMX; break; } usCurrGroupDestOffset = (uint16) ulCurrGroupDestOffset; /* already checked if in range */ /* need to register the old and new group offsets */ if ((errCode = RecordGroupOffset(&keeper, usCurrGroupSrcOffset, usCurrGroupDestOffset)) != NO_ERROR) break; usGroupDestOffset = usCurrGroupDestOffset; /* need to copy the group data over */ if ((errCode = ReadGeneric(pUnCONSTInputBufferInfo, (uint8 *) &GroupHeader, SIZEOF_VDMXGROUP, VDMXGROUP_CONTROL, ulSrcOffset + usCurrGroupSrcOffset, &usBytesRead)) != NO_ERROR) break; ulGroupLength = usBytesRead + (GroupHeader.recs * GetGenericSize(VDMXVTABLE_CONTROL)); /* read the group data into a buffer */ if (ulGroupLength > ulGroupBufferLength) { errCode = ERR_INVALID_VDMX; /* error in data! */ break; } if ((errCode = ReadBytes(pUnCONSTInputBufferInfo, (uint8 *) pGroupBuffer, ulSrcOffset + usCurrGroupSrcOffset, ulGroupLength)) != NO_ERROR) break; /* and write them to the output buffer */ if ((errCode = WriteBytes(pOutputBufferInfo, (uint8 *) pGroupBuffer, ulDestOffset + usCurrGroupDestOffset, ulGroupLength)) != NO_ERROR) break; ++usGroupCount; /* increment our CurrGroupDestOffset value for next time around */ ulCurrGroupDestOffset = usCurrGroupDestOffset + ulGroupLength; } /* now write out that relative offset value */ if ((errCode = WriteWord(pOutputBufferInfo, usGroupDestOffset, ulDestOffsetOffsets + (usDestRatioIndex * sizeof(uint16)))) != NO_ERROR) break; ++usDestRatioIndex; /* increment in dest array */ } } break; /* out of while */ } if (errCode == NO_ERROR) { Vdmx.numRatios = usKeepRatioCount; Vdmx.numRecs = usGroupCount; errCode = WriteGeneric( pOutputBufferInfo, (uint8 *) &Vdmx, SIZEOF_VDMX, VDMX_CONTROL, ulDestOffset, &usBytesWritten ); } if (errCode == NO_ERROR) { ulDestLength = ulCurrGroupDestOffset; /* this is the size of the table */ errCode = UpdateDirEntryAll( pOutputBufferInfo, VDMX_TAG, ulDestLength, ulDestOffset ); *pulNewOutOffset = ulDestOffset + ulDestLength; } FreeGroupOffsetArray(&keeper); /* free up structure to track offset re-use */ Mem_Free(pGroupBuffer); Mem_Free(KeepSrcRatioArray); Mem_Free(SrcRatioArray); return errCode; }
int16 ModLTSH( CONST_TTFACC_FILEBUFFERINFO * pInputBufferInfo, TTFACC_FILEBUFFERINFO * pOutputBufferInfo, CONST uint8 *puchKeepGlyphList, CONST uint16 usGlyphListCount, CONST uint16 usDttfGlyphIndexCount, uint32 *pulNewOutOffset) { LTSH Ltsh; uint32 ulLtshOffset; uint32 ulInOffset; uint32 ulOutOffset; uint16 i,j; int16 errCode; uint16 GlyphCount; uint8 uchValue; uint16 usBytesWritten; /* read ltsh table header */ if ((errCode = CopyTableOver(pOutputBufferInfo, pInputBufferInfo, LTSH_TAG, pulNewOutOffset)) != NO_ERROR) { if (errCode == ERR_FORMAT) return NO_ERROR; /* not required */ return errCode; } ulLtshOffset = GetLTSH( pOutputBufferInfo, &Ltsh ); if ( ulLtshOffset == 0 ) return ERR_GENERIC; if (usDttfGlyphIndexCount) { ulOutOffset = ulLtshOffset + GetGenericSize( LTSH_CONTROL ); ulInOffset = ulLtshOffset + GetGenericSize( LTSH_CONTROL ); GlyphCount = min(Ltsh.numGlyphs, usGlyphListCount); /* don't want to process too many if file is buggy */ for( i=0, j= 0; i < GlyphCount && j < usDttfGlyphIndexCount; i++) { if (puchKeepGlyphList[ i ]) /* need keep this one out */ { if ((errCode = ReadByte( pOutputBufferInfo, (uint8 *) &uchValue, ulInOffset)) != NO_ERROR) return errCode; if ((errCode = WriteByte( pOutputBufferInfo, (uint8) uchValue, ulOutOffset)) != NO_ERROR) return errCode; ulOutOffset += sizeof(uint8); ++j; } ulInOffset += sizeof(uint8); } /* now we need to update the count for the LTSH table */ Ltsh.numGlyphs = usDttfGlyphIndexCount; if ((errCode = WriteGeneric( pOutputBufferInfo, (uint8 *)&Ltsh, SIZEOF_LTSH, LTSH_CONTROL, ulLtshOffset, &usBytesWritten )) != NO_ERROR) return errCode; if ((errCode = UpdateDirEntry( pOutputBufferInfo, LTSH_TAG, ulOutOffset - ulLtshOffset )) != NO_ERROR) return errCode; } else { ulOutOffset = ulLtshOffset + GetGenericSize( LTSH_CONTROL ); GlyphCount = min(Ltsh.numGlyphs, usGlyphListCount); /* don't want to process too many if file is buggy */ for( i=0; i < GlyphCount; i++) { if (!puchKeepGlyphList[ i ]) /* need to zero out */ { if ((errCode = WriteByte( pOutputBufferInfo, (uint8) 0, ulOutOffset)) != NO_ERROR) return errCode; } ulOutOffset += sizeof(uint8); } } *pulNewOutOffset = ulOutOffset; return NO_ERROR; }
int16 ModHdmx( CONST_TTFACC_FILEBUFFERINFO * pInputBufferInfo, TTFACC_FILEBUFFERINFO * pOutputBufferInfo, CONST uint8 *puchKeepGlyphList, CONST uint16 usGlyphListCount, CONST uint16 usDttfGlyphIndexCount, uint32 *pulNewOutOffset) { HDMX Hdmx; HDMX_DEVICE_REC DevRecord; uint8 Width; uint8 maxWidth; uint16 i; uint16 j,k; uint32 ulHdmxOffset; uint32 ulOffset; uint32 ulDevOffset; uint32 ulInOffset; uint32 ulOutOffset; uint32 ulInDevOffset; uint32 ulOutDevOffset; int16 errCode; uint16 usBytesRead; uint16 usBytesWritten; uint32 ulOutSizeDeviceRecord; if ((errCode = CopyTableOver(pOutputBufferInfo, pInputBufferInfo, HDMX_TAG, pulNewOutOffset)) != NO_ERROR) { if (errCode == ERR_FORMAT) return NO_ERROR; /* not required */ return errCode; } ulHdmxOffset = GetHdmx(pOutputBufferInfo, &Hdmx); if ( !ulHdmxOffset ) return ERR_GENERIC; ulOffset = ulHdmxOffset + GetGenericSize( HDMX_CONTROL ); if (usDttfGlyphIndexCount) /* we want compact form */ { ulInOffset = ulOutOffset = ulOffset; ulOutSizeDeviceRecord = RoundToLongWord(GetGenericSize(HDMX_DEVICE_REC_CONTROL) + (sizeof(uint8) * usDttfGlyphIndexCount)); for( j = 0; j < Hdmx.numDeviceRecords; j++) { ulInDevOffset = ulInOffset; ulOutDevOffset = ulOutOffset; if ((errCode = ReadGeneric( pOutputBufferInfo, (uint8 *)&DevRecord, SIZEOF_HDMX_DEVICE_REC, HDMX_DEVICE_REC_CONTROL, ulInDevOffset, &usBytesRead )) != NO_ERROR) return errCode; ulInOffset += usBytesRead; ulOutOffset += usBytesRead; maxWidth = 0; for(i = 0, k= 0; i < usGlyphListCount && k < usDttfGlyphIndexCount; i++) /* process each glyph entry */ { if (puchKeepGlyphList[ i ]) { if ((errCode = ReadByte( pOutputBufferInfo, &Width, ulInOffset)) != NO_ERROR) return errCode; maxWidth = max( maxWidth, Width ); if ((errCode = WriteByte( pOutputBufferInfo, Width, ulOutOffset)) != NO_ERROR) return errCode; ulOutOffset += sizeof(uint8); ++k; } ulInOffset += sizeof(uint8); } if ((errCode = ZeroLongWordAlign(pOutputBufferInfo, ulOutOffset, &ulOutOffset)) != NO_ERROR) return errCode; DevRecord.maxWidth = maxWidth; if ((errCode = WriteGeneric( pOutputBufferInfo, (uint8 *)&DevRecord, SIZEOF_HDMX_DEVICE_REC, HDMX_DEVICE_REC_CONTROL, ulOutDevOffset, &usBytesWritten )) != NO_ERROR) return errCode; ulInOffset = ulInDevOffset + Hdmx.sizeDeviceRecord; ulOutOffset = ulOutDevOffset + ulOutSizeDeviceRecord; } /* now need to update hdmx record */ Hdmx.sizeDeviceRecord = ulOutSizeDeviceRecord; if ((errCode = WriteGeneric( pOutputBufferInfo, (uint8 *)&Hdmx, SIZEOF_HDMX, HDMX_CONTROL, ulHdmxOffset, &usBytesWritten )) != NO_ERROR) return errCode; if ((errCode = UpdateDirEntry( pOutputBufferInfo, HDMX_TAG, ulOutOffset - ulHdmxOffset )) != NO_ERROR) return errCode; *pulNewOutOffset = ulOutOffset; } else { /* if (GetHHea(pOutputBufferInfo, &Hhea) == 0L) return ERR_FORMAT; */ for( j = 0; j < Hdmx.numDeviceRecords; j++) { ulDevOffset = ulOffset; if ((errCode = ReadGeneric( pOutputBufferInfo, (uint8 *)&DevRecord, SIZEOF_HDMX_DEVICE_REC, HDMX_DEVICE_REC_CONTROL, ulDevOffset, &usBytesRead )) != NO_ERROR) return errCode; ulOffset += usBytesRead; maxWidth = 0; for(i = 0; i < usGlyphListCount; i++) /* process each glyph entry */ { if (puchKeepGlyphList[ i ]) { if ((errCode = ReadByte( pOutputBufferInfo, &Width, ulOffset)) != NO_ERROR) return errCode; maxWidth = max( maxWidth, Width ); } else /* if (i != Hhea.numLongMetrics-1) clear the value in the file, so the compressor can do its work, except for any dummy entries in the hmtx table */ { if ((errCode = WriteByte( pOutputBufferInfo, (uint8) 0, ulOffset)) != NO_ERROR) return errCode; } ulOffset += sizeof(uint8); } if (DevRecord.maxWidth != maxWidth) /* it's changed, we need to write it out again */ { DevRecord.maxWidth = maxWidth; if ((errCode = WriteGeneric( pOutputBufferInfo, (uint8 *)&DevRecord, SIZEOF_HDMX_DEVICE_REC, HDMX_DEVICE_REC_CONTROL, ulDevOffset, &usBytesWritten )) != NO_ERROR) return errCode; } ulOffset = ulDevOffset + Hdmx.sizeDeviceRecord; } *pulNewOutOffset = ulOffset; } return NO_ERROR; }
int16 ModKern( CONST_TTFACC_FILEBUFFERINFO * pInputBufferInfo, TTFACC_FILEBUFFERINFO * pOutputBufferInfo, CONST uint8 *puchKeepGlyphList, CONST uint16 usGlyphListCount, CONST uint16 usFormat, uint32 *pulNewOutOffset) { uint32 ulOffset; uint32 ulSourceOffset; uint32 ulTargetOffset; KERN_HEADER KernHeader; KERN_SUB_HEADER KernSubHeader; uint16 i; uint16 usSubtableLength; uint16 usBytesRead; int16 errCode = NO_ERROR; /* read kern table header */ if (usFormat == TTFDELTA_DELTA) /* only formats for which this is valid */ { MarkTableForDeletion(pOutputBufferInfo, KERN_TAG); return NO_ERROR; } if ((errCode = CopyTableOver(pOutputBufferInfo, pInputBufferInfo, KERN_TAG, pulNewOutOffset)) != NO_ERROR) { if (errCode == ERR_FORMAT) return NO_ERROR; /* not required */ return errCode; } if (usFormat == TTFDELTA_SUBSET1) /* need to keep the full kern table as we will send only once */ return NO_ERROR; ulOffset = TTTableOffset( pOutputBufferInfo, KERN_TAG ); if ( ulOffset == 0L ) return ERR_GENERIC; /* should have been copied over */ if ((errCode = ReadGeneric( pOutputBufferInfo, (uint8 *) &KernHeader, SIZEOF_KERN_HEADER, KERN_HEADER_CONTROL, ulOffset, &usBytesRead )) != NO_ERROR) return errCode; /* read each subtable. If it is a format 0 subtable, remove kern pairs involving deleted glyphs. Otherwise, copy the table down to its new location */ ulSourceOffset = ulOffset + usBytesRead; ulTargetOffset = ulSourceOffset; for ( i = 0; i < KernHeader.nTables; i++ ) { /* read subtable header */ if ((errCode = ReadGeneric( pOutputBufferInfo, (uint8 *) &KernSubHeader, SIZEOF_KERN_SUB_HEADER, KERN_SUB_HEADER_CONTROL, ulSourceOffset, &usBytesRead )) != NO_ERROR) return errCode; /* copy data to new location to cover any gaps left by shortening the previous format 0 subtable. Nothing happens first time around. */ if ((errCode = CopyBlock( pOutputBufferInfo, ulTargetOffset, ulSourceOffset, KernSubHeader.length )) != NO_ERROR) return errCode; ulSourceOffset += KernSubHeader.length; /* if subtable is format 0, shorten it by deleting kern pairs involving deleted glyphs */ if ( KernSubHeader.format == 0 ) { if ((errCode = AdjustKernFormat0( pOutputBufferInfo, puchKeepGlyphList, usGlyphListCount, KernSubHeader, ulTargetOffset, usBytesRead, &usSubtableLength)) != NO_ERROR) return errCode; ulTargetOffset += usSubtableLength; } else ulTargetOffset += KernSubHeader.length; } /* Write out revised table length */ if (ulTargetOffset == ulOffset + GetGenericSize( KERN_HEADER_CONTROL )) /* no Kern data written */ MarkTableForDeletion(pOutputBufferInfo, KERN_TAG); else errCode = UpdateDirEntry( pOutputBufferInfo, KERN_TAG, ulTargetOffset - ulOffset ); *pulNewOutOffset = ulTargetOffset; return errCode; }
int16 ModXmtxXhea( CONST_TTFACC_FILEBUFFERINFO * pInputBufferInfo, TTFACC_FILEBUFFERINFO * pOutputBufferInfo, CONST uint8 *puchKeepGlyphList, CONST uint16 usGlyphListCount, CONST uint16 usDttfGlyphIndexCount, CONST uint16 usMaxGlyphIndexUsed, BOOL isHmtx, uint32 *pulNewOutOffset) { XHEA XHea; uint16 i,j; uint32 ulXmtxOffset; uint32 ulXheaOffset; uint32 ulCrntOffset; LONGXMETRIC ZeroLongMetric; LONGXMETRIC CurrLongMetric; LONGXMETRIC *LongMetricsArray; uint16 LongMetricSize; int16 errCode; uint16 usBytesRead; uint16 usBytesWritten; uint16 nNewLongMetrics; uint32 ulBytesWritten; const char * xmtx_tag; const char * xhea_tag; /* determine number of long metrics in hmtx table */ if (isHmtx) { xmtx_tag = HMTX_TAG; xhea_tag = HHEA_TAG; if ((ulXheaOffset = GetHHea( pOutputBufferInfo, (HHEA *) &XHea )) == 0L) { /* hasn't been copied yet */ if ((errCode = CopyTableOver(pOutputBufferInfo, pInputBufferInfo, xhea_tag, pulNewOutOffset)) != NO_ERROR) return ERR_INVALID_HHEA; if ((ulXheaOffset = GetHHea( pOutputBufferInfo, (HHEA *) &XHea )) == 0L) return ERR_MISSING_HHEA; /* required table */ } } else { xmtx_tag = VMTX_TAG; xhea_tag = VHEA_TAG; ulXheaOffset = TTTableOffset( (TTFACC_FILEBUFFERINFO *)pInputBufferInfo, xhea_tag); ulXmtxOffset = TTTableOffset( (TTFACC_FILEBUFFERINFO *)pInputBufferInfo, xmtx_tag); if (ulXheaOffset != DIRECTORY_ERROR && ulXmtxOffset == DIRECTORY_ERROR) /* this is bogus, get rid of the vhea table */ { MarkTableForDeletion(pOutputBufferInfo, xhea_tag); /* there is an entry in the output directory */ return (NO_ERROR); } if ((ulXheaOffset = GetVHea( pOutputBufferInfo, (VHEA *) &XHea )) == 0L) { if ((errCode = CopyTableOver(pOutputBufferInfo, pInputBufferInfo, xhea_tag, pulNewOutOffset)) != NO_ERROR) { if (errCode == ERR_FORMAT) return NO_ERROR; /* not required */ else return errCode; } if ((ulXheaOffset = GetVHea( pOutputBufferInfo, (VHEA *) &XHea )) == 0L) return ERR_MISSING_VHEA; /* */ } } if ((errCode = CopyTableOver(pOutputBufferInfo, pInputBufferInfo, xmtx_tag, pulNewOutOffset)) != NO_ERROR) return errCode; ulXmtxOffset = TTTableOffset( pOutputBufferInfo, xmtx_tag); if ((XHea.numLongMetrics == 0) || (XHea.numLongMetrics > usGlyphListCount)) return ERR_INVALID_HHEA_OR_VHEA; /* invalid values */ if (ulXmtxOffset == DIRECTORY_ERROR ) return ERR_MISSING_HMTX_OR_VMTX; /* required table */ ulCrntOffset = ulXmtxOffset; ZeroLongMetric.xsb = 0; ZeroLongMetric.advanceX = 0; LongMetricSize = GetGenericSize(LONGXMETRIC_CONTROL); if (usDttfGlyphIndexCount == 0) /* not trying to make a compact table, just subsetting */ { /* check to see if we will grow. We will grow with subsetting if our last good glyph index is beyond the current numLongMetrics */ if ((XHea.numLongMetrics != usGlyphListCount) && /* if longmetrics is the same as number of glyphs, table won't be growing */ /* need for zero based to 1 base + 1 for the dummy 0 entry */ (usMaxGlyphIndexUsed + 1 + 1 > XHea.numLongMetrics)) /* check if we may make the table grow */ return (ERR_WOULD_GROW); nNewLongMetrics = min(usGlyphListCount, usMaxGlyphIndexUsed + 1 + 1); /* + 1 again for dummy */ /* process all the Long metrics (and perhaps some short when we won't be modifying the table */ for (i = 0; i < nNewLongMetrics; ++i) { if (puchKeepGlyphList[i] == FALSE)/* else we don't want to keep this one, 0 metrics to write */ { if ((errCode = WriteGeneric( pOutputBufferInfo, (uint8 *)&ZeroLongMetric, SIZEOF_LONGXMETRIC, LONGXMETRIC_CONTROL, ulCrntOffset, &usBytesWritten)) != NO_ERROR) return (errCode); } ulCrntOffset += LongMetricSize; } /* write out short metrics of 0 for the rest of them*/ for (i = nNewLongMetrics; i < usGlyphListCount; ++i) { if ((errCode = WriteWord(pOutputBufferInfo, 0, ulCrntOffset)) != NO_ERROR) return errCode; ulCrntOffset += sizeof (uint16); } ulBytesWritten = ulCrntOffset - ulXmtxOffset; } else /* we want to make a compact table */ { /* now collapse the table if we are in Compact form for Subsetting and Delta fonts */ /* we will use an interrum table for simplification */ ulCrntOffset = ulXmtxOffset; LongMetricsArray = (LONGXMETRIC *)Mem_Alloc(sizeof(LONGXMETRIC) * usDttfGlyphIndexCount); if (LongMetricsArray == NULL) return ERR_MEM; nNewLongMetrics = 0; for (i = 0, j= 0; i < XHea.numLongMetrics && j < usDttfGlyphIndexCount && errCode == NO_ERROR; ++i) /* need to read and copy up the values */ { if (puchKeepGlyphList[i]) /* if we want to keep the glyph, or its the last special one */ { if ((errCode = ReadGeneric( pOutputBufferInfo, (uint8 *)&CurrLongMetric, SIZEOF_LONGXMETRIC, LONGXMETRIC_CONTROL, ulCrntOffset, &usBytesRead)) != NO_ERROR) break; LongMetricsArray[j] = CurrLongMetric; ++j; ++nNewLongMetrics; } else if (i == XHea.numLongMetrics-1) /* its that special dummy "last" one, need AW value */ { if ((errCode = ReadGeneric( pOutputBufferInfo, (uint8 *)&CurrLongMetric, SIZEOF_LONGXMETRIC, LONGXMETRIC_CONTROL, ulCrntOffset, &usBytesRead)) != NO_ERROR) break; ++nNewLongMetrics; /* we will need an extra one, but guarenteed to be <= XHea.numLongMetrics */ } ulCrntOffset += LongMetricSize; } if (errCode != NO_ERROR) { Mem_Free(LongMetricsArray); return errCode; } for (; i < usGlyphListCount && j < usDttfGlyphIndexCount; ++i) /* copy the xsb from the long metrics */ { if (puchKeepGlyphList[i]) { if ((errCode = ReadWord( pOutputBufferInfo, (uint16 *)&(CurrLongMetric.xsb), ulCrntOffset)) != NO_ERROR) break; LongMetricsArray[j] = CurrLongMetric; ++j; } ulCrntOffset += sizeof(uint16); } if (errCode != NO_ERROR) { Mem_Free(LongMetricsArray); return errCode; } if (j != usDttfGlyphIndexCount) { Mem_Free(LongMetricsArray); return ERR_GENERIC; } /* first write out the long metrics */ errCode = WriteGenericRepeat(pOutputBufferInfo,(uint8 *)LongMetricsArray, LONGXMETRIC_CONTROL, ulXmtxOffset,&ulBytesWritten, nNewLongMetrics, SIZEOF_LONGXMETRIC); /* then write out the short metrics */ if (errCode == NO_ERROR) { ulCrntOffset = ulXmtxOffset + ulBytesWritten; for (i = nNewLongMetrics; i < usDttfGlyphIndexCount; ++i) { if ((errCode = WriteWord( pOutputBufferInfo, LongMetricsArray[i].xsb, ulCrntOffset)) != NO_ERROR) break; ulCrntOffset += sizeof(uint16); } } Mem_Free(LongMetricsArray); if (errCode != NO_ERROR) return errCode; ulBytesWritten = ulCrntOffset - ulXmtxOffset; } /* write out our new, shorter length... cleanup comes later */ errCode = UpdateDirEntry( pOutputBufferInfo, xmtx_tag, ulBytesWritten ); if (errCode == NO_ERROR && nNewLongMetrics != XHea.numLongMetrics) { XHea.numLongMetrics = nNewLongMetrics; /* leave these alone if the hmtx table will remain the same */ if ((errCode = WriteGeneric( pOutputBufferInfo, (uint8 *) &XHea, SIZEOF_XHEA, XHEA_CONTROL, ulXheaOffset, &usBytesWritten )) != NO_ERROR) return (errCode); } *pulNewOutOffset = ulCrntOffset; return errCode; }
PRIVATE int16 AdjustKernFormat0(TTFACC_FILEBUFFERINFO * pOutputBufferInfo, CONST uint8 *puchKeepGlyphList, CONST uint16 usGlyphListCount, KERN_SUB_HEADER KernSubHeader, uint32 ulOffset, uint16 usSubHeaderSize, /* size in file of usSubHeader */ uint16 * pusNewLength) { uint32 ulSourceOffset; uint32 ulTargetOffset; KERN_FORMAT_0 KernFormat0; KERN_PAIR KernPair; uint16 usKernFormat0Size; uint16 i; uint16 usUsedPairs; uint16 usSearchRange; uint16 usRangeShift; uint16 usBytesRead; uint16 usBytesWritten; int16 errCode; /* determine number of kern pairs */ ulSourceOffset = ulOffset + usSubHeaderSize; if ((errCode = ReadGeneric( pOutputBufferInfo, (uint8 *)&KernFormat0, SIZEOF_KERN_FORMAT_0, KERN_FORMAT_0_CONTROL, ulSourceOffset, &usBytesRead )) != NO_ERROR) return errCode; usKernFormat0Size = usBytesRead; ulSourceOffset += usKernFormat0Size; ulTargetOffset = ulSourceOffset; /* wade through list of pairs, copying those that do not include a deleted glyph and ignoring those that do */ usUsedPairs = 0; for ( i = 0; i < KernFormat0.nPairs; i++ ) { if ((errCode = ReadGeneric( pOutputBufferInfo, (uint8 *) &KernPair, SIZEOF_KERN_PAIR, KERN_PAIR_CONTROL, ulSourceOffset, &usBytesRead )) != NO_ERROR) return errCode; if (( KernPair.left < usGlyphListCount && puchKeepGlyphList[KernPair.left] ) && ( KernPair.right < usGlyphListCount && puchKeepGlyphList[KernPair.right] )) { if ((errCode = WriteGeneric( pOutputBufferInfo, (uint8 *) &KernPair, SIZEOF_KERN_PAIR, KERN_PAIR_CONTROL, ulTargetOffset, &usBytesWritten)) != NO_ERROR) return errCode; ulTargetOffset += usBytesWritten; usUsedPairs++; } ulSourceOffset += usBytesRead; } /* calc and write out revised subtable header */ if (usUsedPairs > 0) { *pusNewLength = (uint16) (ulTargetOffset - ulOffset); KernSubHeader.length = *pusNewLength ; if ((errCode = WriteGeneric( pOutputBufferInfo, (uint8 *) &KernSubHeader, SIZEOF_KERN_SUB_HEADER, KERN_SUB_HEADER_CONTROL, ulOffset, &usBytesWritten )) != NO_ERROR) return errCode; /* calc and write out revised format 0 header */ usSearchRange = (0x0001 << log2( usUsedPairs )) * GetGenericSize( KERN_PAIR_CONTROL ); usRangeShift = (usUsedPairs * GetGenericSize( KERN_PAIR_CONTROL )) - usSearchRange; KernFormat0.nPairs = usUsedPairs; KernFormat0.searchRange = usSearchRange; KernFormat0.entrySelector = log2( usUsedPairs ); KernFormat0.rangeShift = usRangeShift; if ((errCode = WriteGeneric( pOutputBufferInfo, (uint8 *) &KernFormat0, SIZEOF_KERN_FORMAT_0, KERN_FORMAT_0_CONTROL, ulOffset + usBytesWritten, &usBytesWritten )) != NO_ERROR) return errCode; } else *pusNewLength = 0; return NO_ERROR; }
int16 ModCmap(CONST_TTFACC_FILEBUFFERINFO * pInputBufferInfo, TTFACC_FILEBUFFERINFO * pOutputBufferInfo, uint8 *puchKeepGlyphList, /* glyphs to keep - boolean */ uint16 usGlyphCount, /* count of puchKeepGlyphList */ uint16 * pOS2MinChr, /* for setting in the OS/2 table */ uint16 * pOS2MaxChr, /* for setting in the OS/2 table */ uint32 *pulNewOutOffset) { FORMAT4_SEGMENTS *NewFormat4Segments = NULL; /* used to create a Segments array for format 4 subtables */ FORMAT12_GROUPS *NewFormat12Groups = NULL; uint16 usnSegment; GLYPH_ID *NewFormat4GlyphIdArray = NULL; /* used to create a GlyphID array for format 4 subtables */ uint16 snFormat4GlyphIdArray; CMAP_FORMAT4 CmapFormat4; CMAP_FORMAT12 CmapFormat12; CMAP_TABLELOC *pCmapTableLoc=NULL; uint16 usSubTableCount; CMAP_SUBHEADER_GEN CmapSubHeader; PCHAR_GLYPH_MAP_LIST pCharGlyphMapList = NULL; /* sorted list of character codes to keep and their glyph indices */ uint16 usnCharGlyphMapListCount= 0; /* length of pCharGlyphMapList array */ PCHAR_GLYPH_MAP_LIST_EX pCharGlyphMapListEx = NULL; /* sorted list of character codes to keep and their glyph indices */ uint32 ulnCharGlyphMapListCount= 0; /* length of pCharGlyphMapListEx array */ CMAPOFFSETRECORDKEEPER CmapSubtableKeeper; uint32 ulCmapOffset; uint32 ulCmapLength; uint32 ulCmapNewLength; uint32 ulCmapSubTableDirOffset; uint32 ulCmapSubtableNewOffset; uint32 ulBytesWritten; uint16 i; int16 errCode= NO_ERROR; uint16 usBytesRead; if ((errCode = CopyTableOver(pOutputBufferInfo, pInputBufferInfo, CMAP_TAG, pulNewOutOffset)) != NO_ERROR) return errCode; ulCmapOffset = TTTableOffset( pOutputBufferInfo, CMAP_TAG ); ulCmapLength = TTTableLength( pOutputBufferInfo, CMAP_TAG); *pOS2MinChr = 0; *pOS2MaxChr = 0; if (ulCmapOffset == 0L || ulCmapLength == 0L) return ERR_INVALID_CMAP; /* huh?*/ usSubTableCount = GetCmapSubtableCount(pOutputBufferInfo, ulCmapOffset); pCmapTableLoc = (CMAP_TABLELOC *)Mem_Alloc(SIZEOF_CMAP_TABLELOC * usSubTableCount); if (pCmapTableLoc == NULL) return ERR_MEM; ulCmapSubTableDirOffset = ulCmapOffset + GetGenericSize( CMAP_HEADER_CONTROL ); if (InitCmapOffsetArray(&CmapSubtableKeeper, usSubTableCount) != NO_ERROR) { return ERR_MEM; } for (i = 0; i < usSubTableCount; ++i) { /* read the cmap directory entry */ if ((errCode = ReadGeneric(pOutputBufferInfo, (uint8 *) &(pCmapTableLoc[i]), SIZEOF_CMAP_TABLELOC, CMAP_TABLELOC_CONTROL, ulCmapSubTableDirOffset, &usBytesRead)) != NO_ERROR) break; ulCmapSubTableDirOffset += usBytesRead; /* for next time around */ /* Check to see if this subtable is shared, and has been modified already */ if ((ulCmapSubtableNewOffset = LookupCmapOffset(&CmapSubtableKeeper, pCmapTableLoc[i].offset)) != 0) { pCmapTableLoc[i].offset = ulCmapSubtableNewOffset; continue; } /* now read the CmapSub Header, to determine the format */ if ((errCode = ReadCmapLength(pOutputBufferInfo, &CmapSubHeader, ulCmapOffset + pCmapTableLoc[i].offset, &usBytesRead)) != NO_ERROR) break; /* Will subset: Format 0, Format 4 ,Format 6 and Format 12 Cmap Subtables */ /* Otherwise, leave them alone */ if (CmapSubHeader.format == FORMAT0_CMAP_FORMAT) { if ((errCode = ModMacStandardCmap(pOutputBufferInfo, ulCmapOffset + pCmapTableLoc[i].offset + usBytesRead, puchKeepGlyphList, usGlyphCount)) != NO_ERROR) break; } else if (CmapSubHeader.format == FORMAT6_CMAP_FORMAT) { if ((errCode = ModMacTrimmedCmap(pOutputBufferInfo, ulCmapOffset + pCmapTableLoc[i].offset, puchKeepGlyphList, usGlyphCount)) != NO_ERROR) break; } else if (CmapSubHeader.format == FORMAT4_CMAP_FORMAT) { /* process Format 4 Cmap Subtable */ /*need to come up with a CharCodeList, from the puchKeepGlyphList */ errCode = ReadAllocFormat4CharGlyphMapList(pOutputBufferInfo, pCmapTableLoc[i].platformID, pCmapTableLoc[i].encodingID, puchKeepGlyphList, usGlyphCount, &pCharGlyphMapList, &usnCharGlyphMapListCount); if (errCode != NO_ERROR) break; NewFormat4Segments = (FORMAT4_SEGMENTS *) Mem_Alloc( (usnCharGlyphMapListCount+1) * SIZEOF_FORMAT4_SEGMENTS ); /* add one for the extra dummy segment */ NewFormat4GlyphIdArray = (GLYPH_ID *) Mem_Alloc( usnCharGlyphMapListCount * sizeof( *NewFormat4GlyphIdArray ) ); if ( NewFormat4Segments == NULL || NewFormat4GlyphIdArray == NULL ) { errCode = ERR_MEM; break; } /* compute new format 4 data */ ComputeFormat4CmapData( &CmapFormat4, NewFormat4Segments, &usnSegment, NewFormat4GlyphIdArray, &snFormat4GlyphIdArray, pCharGlyphMapList, usnCharGlyphMapListCount ); /* Donald, if you don't care if the Cmap subtable grows, you could comment out the next line */ if (CmapFormat4.length <= CmapSubHeader.length) /* if the new length is smaller than the old, we can write it in the old place */ { if (pCmapTableLoc[i].platformID == MS_PLATFORMID) /* only applies to this platform */ { *pOS2MinChr = pCharGlyphMapList[0].usCharCode; *pOS2MaxChr = pCharGlyphMapList[usnCharGlyphMapListCount-1].usCharCode; } errCode = WriteOutFormat4CmapData( pOutputBufferInfo, &CmapFormat4, NewFormat4Segments, NewFormat4GlyphIdArray, usnSegment, snFormat4GlyphIdArray, ulCmapOffset + pCmapTableLoc[i].offset, &ulBytesWritten ); } /* else: leave cmap subtable alone */ /* clean up */ Mem_Free(NewFormat4Segments); Mem_Free(NewFormat4GlyphIdArray ); FreeFormat4CharCodes(pCharGlyphMapList); NewFormat4Segments = NULL; NewFormat4GlyphIdArray = NULL; pCharGlyphMapList = NULL; } else if (CmapSubHeader.format == FORMAT12_CMAP_FORMAT) { uint32 ulnGroups = 0; /*need to come up with a CharCodeList, from the puchKeepGlyphList */ errCode = ReadAllocFormat12CharGlyphMapList(pOutputBufferInfo, ulCmapOffset + pCmapTableLoc[i].offset, puchKeepGlyphList, usGlyphCount, &pCharGlyphMapListEx, &ulnCharGlyphMapListCount); if (errCode != NO_ERROR) break; NewFormat12Groups = (FORMAT12_GROUPS *) Mem_Alloc( (ulnCharGlyphMapListCount) * SIZEOF_FORMAT12_GROUPS ); if ( NewFormat12Groups == NULL) { errCode = ERR_MEM; break; } /* compute new format 12 data */ ComputeFormat12CmapData( &CmapFormat12, NewFormat12Groups, &ulnGroups, pCharGlyphMapListEx, ulnCharGlyphMapListCount ); /* Donald, if you don't care if the Cmap subtable grows, you could comment out the next line */ if (CmapFormat12.length <= CmapSubHeader.length) /* if the new length is smaller than the old, we can write it in the old place */ { if (pCmapTableLoc[i].platformID == MS_PLATFORMID) /* only applies to this platform */ { *pOS2MinChr = (uint16)pCharGlyphMapListEx[0].ulCharCode; *pOS2MaxChr = (uint16)pCharGlyphMapListEx[ulnCharGlyphMapListCount-1].ulCharCode; } errCode = WriteOutFormat12CmapData( pOutputBufferInfo, &CmapFormat12, NewFormat12Groups, ulnGroups, ulCmapOffset + pCmapTableLoc[i].offset, &ulBytesWritten ); } /* else: leave cmap subtable alone */ /* clean up */ Mem_Free(NewFormat12Groups); FreeFormat12CharCodes(pCharGlyphMapListEx); NewFormat12Groups = NULL; pCharGlyphMapListEx = NULL; } RecordCmapOffset(&CmapSubtableKeeper, pCmapTableLoc[i].offset, pCmapTableLoc[i].offset); /* record the new offset (didn't change) */ } /* now need to compress out empty bytes from ends of Cmap Subtables */ if (errCode == NO_ERROR) { errCode = CompressCmapSubTables(pOutputBufferInfo, pCmapTableLoc, usSubTableCount, ulCmapOffset, ulCmapSubTableDirOffset, ulCmapLength, &ulCmapNewLength); *pulNewOutOffset = ulCmapOffset + ulCmapNewLength; /* hand back to caller */ } else /* these weren't taken care of yet (necessarily) */ { Mem_Free(NewFormat4Segments); /* may be non-null */ Mem_Free(NewFormat4GlyphIdArray ); FreeFormat4CharCodes(pCharGlyphMapList); if (errCode == ERR_WOULD_GROW) /* fragmentation has caused a larger cmap table, copy table again */ { *pulNewOutOffset = ulCmapOffset; /* reset */ errCode = CopyTableOver(pOutputBufferInfo, pInputBufferInfo, CMAP_TAG, pulNewOutOffset); } } Mem_Free(pCmapTableLoc); FreeCmapOffsetArray(&CmapSubtableKeeper); return errCode; } /* ModCmap() */
PRIVATE int16 CompressCmapSubTables(TTFACC_FILEBUFFERINFO * pOutputBufferInfo, /* ttfacc info */ CMAP_TABLELOC *pCmapTableLoc, /* array of CmapSubTable locators */ uint16 usSubTableCount, /* count of that array */ uint32 ulCmapOffset, /* offset to cmap table */ uint32 ulSubTableOffset, /* offset to beginning of Subtables */ uint32 ulCmapOldLength, /* length of old cmap table - not to be exceeded */ uint32 *pulCmapNewLength) { IndexOffset *pIndexArray; /* local array of structures to keep track of new offsets of sorted subtables */ CMAP_SUBHEADER_GEN CmapSubHeader; int16 errCode = NO_ERROR; uint32 ulCurrentOffset; uint32 ulLastOffset; uint16 usIndex; uint32 ulCmapTableLength = 0; uint32 ulCmapSubTableDirOffset; uint32 ulPadOffset; uint16 i,j; uint16 usBytesRead; uint16 usPadBytes; pIndexArray = (IndexOffset *) Mem_Alloc(usSubTableCount * sizeof(*pIndexArray)); if (pIndexArray == NULL) return ERR_MEM; /* sort them by old offsets, so we can move the blocks in order */ SortCmapSubByOffset(pCmapTableLoc, usSubTableCount, pIndexArray); ulCurrentOffset = ulSubTableOffset; /* end of the Cmap Directories */ ulLastOffset = 0; for (i = 0; i < usSubTableCount; ++i) /* process each subtable */ { usIndex = pIndexArray[i].usIndex; /* check to see if this offset is the same as the last one copied. If so, ignore, as it has already been copied */ if (i > 0 && pCmapTableLoc[usIndex].offset == ulLastOffset) /* we're pointing to some already copied data */ { pIndexArray[i].ulNewOffset = pIndexArray[i-1].ulNewOffset; continue; } /* read the CmapSub Header */ if ((errCode = ReadCmapLength(pOutputBufferInfo, &CmapSubHeader, ulCmapOffset + pCmapTableLoc[usIndex].offset, &usBytesRead)) != NO_ERROR) break; /* do we need to pad? */ ulPadOffset = ulCurrentOffset; ulCurrentOffset = (ulPadOffset + 1) & ~1; /* we may need to pad, but do it after we move data in case we would overwrite data */ usPadBytes = (uint16) (ulCurrentOffset - ulPadOffset); if (ulCmapTableLength + usPadBytes + CmapSubHeader.length > ulCmapOldLength) /* if we are about to exceed the bounds */ { errCode = ERR_WOULD_GROW; /* can't do it. Bail and restore the old cmap table */ break; } pIndexArray[i].ulNewOffset = ulCurrentOffset-ulCmapOffset; /* calculate the new offset of the cmap subtable, and store in local structure */ ulLastOffset = pCmapTableLoc[usIndex].offset; /* now copy the subtable to it's new locations */ if ((errCode = CopyBlock(pOutputBufferInfo, ulCurrentOffset, ulCmapOffset + pCmapTableLoc[usIndex].offset,CmapSubHeader.length)) != NO_ERROR) break; for (j = 0; j < usPadBytes; ++j) WriteByte(pOutputBufferInfo,(uint8) 0, ulPadOffset+j); /* now clear out those pad bytes */ ulCurrentOffset += CmapSubHeader.length; ulCmapTableLength = ulCurrentOffset - ulCmapOffset; /* to update the Font Directory values */ } if (errCode == NO_ERROR) { for (i = 0; i < usSubTableCount; ++i) /* now set the new offsets - retrieved from the local structure array */ pCmapTableLoc[pIndexArray[i].usIndex].offset = pIndexArray[i].ulNewOffset; ulCmapSubTableDirOffset = ulCmapOffset + GetGenericSize( CMAP_HEADER_CONTROL ); for (i = 0; i < usSubTableCount; ++i) /* now write the new offsets in their original order (Plat/encoding order) */ { if ((errCode = WriteGeneric(pOutputBufferInfo, (uint8 *) &(pCmapTableLoc[i]), SIZEOF_CMAP_TABLELOC, CMAP_TABLELOC_CONTROL, ulCmapSubTableDirOffset, &usBytesRead)) != NO_ERROR) break; ulCmapSubTableDirOffset += usBytesRead; /* for next time around */ } } Mem_Free(pIndexArray); if (errCode == NO_ERROR) /* now update the Directory Entry for the file */ errCode = UpdateDirEntry(pOutputBufferInfo, CMAP_TAG, ulCmapTableLength); *pulCmapNewLength = ulCmapTableLength; return errCode; }