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path: root/Build/source/libs/libttf/ttcmap.c
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Diffstat (limited to 'Build/source/libs/libttf/ttcmap.c')
-rw-r--r--Build/source/libs/libttf/ttcmap.c503
1 files changed, 0 insertions, 503 deletions
diff --git a/Build/source/libs/libttf/ttcmap.c b/Build/source/libs/libttf/ttcmap.c
deleted file mode 100644
index 2dd58ece6d9..00000000000
--- a/Build/source/libs/libttf/ttcmap.c
+++ /dev/null
@@ -1,503 +0,0 @@
-/*******************************************************************
- *
- * ttcmap.c 1.0
- *
- * TrueType Character Mappings
- *
- * Copyright 1996-1999 by
- * David Turner, Robert Wilhelm, and Werner Lemberg.
- *
- * This file is part of the FreeType project, and may only be used
- * modified and distributed under the terms of the FreeType project
- * license, LICENSE.TXT. By continuing to use, modify, or distribute
- * this file you indicate that you have read the license and
- * understand and accept it fully.
- *
- ******************************************************************/
-
-#include "ttobjs.h"
-#include "ttdebug.h"
-#include "ttfile.h"
-#include "ttmemory.h"
-#include "ttload.h"
-#include "ttcmap.h"
-
-/* required by the tracing mode */
-#undef TT_COMPONENT
-#define TT_COMPONENT trace_cmap
-
-
-/*******************************************************************
- *
- * Function : CharMap_Load
- *
- * Description : Loads a given charmap into memory.
- *
- * Input : cmap pointer to cmap table
- *
- * Output : Error code.
- *
- * Notes : - Assumes the the stream is already used (opened).
- *
- * - In case of error, releases all partially allocated
- * tables.
- *
- ******************************************************************/
-
- LOCAL_FUNC
- TT_Error CharMap_Load( PCMapTable cmap,
- TT_Stream input )
- {
- DEFINE_LOAD_LOCALS( input );
-
- UShort num_SH, num_Seg, i;
-
- UShort u, l;
-
- PCMap0 cmap0;
- PCMap2 cmap2;
- PCMap4 cmap4;
- PCMap6 cmap6;
-
- PCMap2SubHeader cmap2sub;
- PCMap4Segment segments;
-
-
- if ( cmap->loaded )
- return TT_Err_Ok;
-
- if ( FILE_Seek( cmap->offset ) )
- return error;
-
- switch ( cmap->format )
- {
- case 0:
- cmap0 = &cmap->c.cmap0;
-
- if ( ALLOC( cmap0->glyphIdArray, 256L ) ||
- FILE_Read( (void*)cmap0->glyphIdArray, 256L ) )
- goto Fail;
-
- break;
-
- case 2:
- num_SH = 0;
- cmap2 = &cmap->c.cmap2;
-
- /* allocate subheader keys */
-
- if ( ALLOC_ARRAY( cmap2->subHeaderKeys, 256, UShort ) ||
- ACCESS_Frame( 512L ) )
- goto Fail;
-
- for ( i = 0; i < 256; i++ )
- {
- u = GET_UShort() / 8;
- cmap2->subHeaderKeys[i] = u;
-
- if ( num_SH < u )
- num_SH = u;
- }
-
- FORGET_Frame();
-
- /* load subheaders */
-
- cmap2->numGlyphId = l =
- ( ( cmap->length - 2L * (256 + 3) - num_SH * 8L ) & 0xffff) / 2;
-
- if ( ALLOC_ARRAY( cmap2->subHeaders,
- num_SH + 1,
- TCMap2SubHeader ) ||
- ACCESS_Frame( ( num_SH + 1 ) * 8L ) )
- goto Fail;
-
- cmap2sub = cmap2->subHeaders;
-
- for ( i = 0; i <= num_SH; i++ )
- {
- cmap2sub->firstCode = GET_UShort();
- cmap2sub->entryCount = GET_UShort();
- cmap2sub->idDelta = GET_Short();
- /* we apply the location offset immediately */
- cmap2sub->idRangeOffset = GET_UShort() - ( num_SH - i ) * 8 - 2;
-
- cmap2sub++;
- }
-
- FORGET_Frame();
-
- /* load glyph ids */
-
- if ( ALLOC_ARRAY( cmap2->glyphIdArray, l, UShort ) ||
- ACCESS_Frame( l * 2L ) )
- goto Fail;
-
- for ( i = 0; i < l; i++ )
- cmap2->glyphIdArray[i] = GET_UShort();
-
- FORGET_Frame();
- break;
-
- case 4:
- cmap4 = &cmap->c.cmap4;
-
- /* load header */
-
- if ( ACCESS_Frame( 8L ) )
- goto Fail;
-
- cmap4->segCountX2 = GET_UShort();
- cmap4->searchRange = GET_UShort();
- cmap4->entrySelector = GET_UShort();
- cmap4->rangeShift = GET_UShort();
-
- num_Seg = cmap4->segCountX2 / 2;
-
- FORGET_Frame();
-
- /* load segments */
-
- if ( ALLOC_ARRAY( cmap4->segments,
- num_Seg,
- TCMap4Segment ) ||
- ACCESS_Frame( (num_Seg * 4 + 1) * 2L ) )
- goto Fail;
-
- segments = cmap4->segments;
-
- for ( i = 0; i < num_Seg; i++ )
- segments[i].endCount = GET_UShort();
-
- (void)GET_UShort();
-
- for ( i = 0; i < num_Seg; i++ )
- segments[i].startCount = GET_UShort();
-
- for ( i = 0; i < num_Seg; i++ )
- segments[i].idDelta = GET_Short();
-
- for ( i = 0; i < num_Seg; i++ )
- segments[i].idRangeOffset = GET_UShort();
-
- FORGET_Frame();
-
- cmap4->numGlyphId = l =
- ( ( cmap->length - ( 16L + 8L * num_Seg ) ) & 0xffff ) / 2;
-
- /* load ids */
-
- if ( ALLOC_ARRAY( cmap4->glyphIdArray, l , UShort ) ||
- ACCESS_Frame( l * 2L ) )
- goto Fail;
-
- for ( i = 0; i < l; i++ )
- cmap4->glyphIdArray[i] = GET_UShort();
-
- FORGET_Frame();
- break;
-
- case 6:
- cmap6 = &cmap->c.cmap6;
-
- if ( ACCESS_Frame( 4L ) )
- goto Fail;
-
- cmap6->firstCode = GET_UShort();
- cmap6->entryCount = GET_UShort();
-
- FORGET_Frame();
-
- l = cmap6->entryCount;
-
- if ( ALLOC_ARRAY( cmap6->glyphIdArray,
- cmap6->entryCount,
- Short ) ||
- ACCESS_Frame( l * 2L ) )
- goto Fail;
-
- for ( i = 0; i < l; i++ )
- cmap6->glyphIdArray[i] = GET_UShort();
-
- FORGET_Frame();
- break;
-
- default: /* corrupt character mapping table */
- return TT_Err_Invalid_CharMap_Format;
-
- }
- return TT_Err_Ok;
-
- Fail:
- CharMap_Free( cmap );
- return error;
- }
-
-
-/*******************************************************************
- *
- * Function : CharMap_Free
- *
- * Description : Releases a given charmap table.
- *
- * Input : cmap pointer to cmap table
- *
- * Output : Error code.
- *
- ******************************************************************/
-
- LOCAL_FUNC
- TT_Error CharMap_Free( PCMapTable cmap )
- {
- if ( !cmap )
- return TT_Err_Ok;
-
- switch ( cmap->format )
- {
- case 0:
- FREE( cmap->c.cmap0.glyphIdArray );
- break;
-
- case 2:
- FREE( cmap->c.cmap2.subHeaderKeys );
- FREE( cmap->c.cmap2.subHeaders );
- FREE( cmap->c.cmap2.glyphIdArray );
- break;
-
- case 4:
- FREE( cmap->c.cmap4.segments );
- FREE( cmap->c.cmap4.glyphIdArray );
- cmap->c.cmap4.segCountX2 = 0;
- break;
-
- case 6:
- FREE( cmap->c.cmap6.glyphIdArray );
- cmap->c.cmap6.entryCount = 0;
- break;
-
- default:
- /* invalid table format, do nothing */
- ;
- }
-
- cmap->loaded = FALSE;
- return TT_Err_Ok;
- }
-
-
-/*******************************************************************
- *
- * Function : CharMap_Index
- *
- * Description : Performs charcode->glyph index translation.
- *
- * Input : cmap pointer to cmap table
- *
- * Output : Glyph index, 0 in case of failure.
- *
- ******************************************************************/
-
- static UShort code_to_index0( ULong charCode, PCMap0 cmap0 );
- static UShort code_to_index2( ULong charCode, PCMap2 cmap2 );
- static UShort code_to_index4( ULong charCode, PCMap4 cmap4 );
- static UShort code_to_index6( ULong charCode, PCMap6 cmap6 );
-
-
- LOCAL_FUNC
- UShort CharMap_Index( PCMapTable cmap,
- ULong charcode )
- {
- switch ( cmap->format )
- {
- case 0:
- return code_to_index0( charcode, &cmap->c.cmap0 );
- case 2:
- return code_to_index2( charcode, &cmap->c.cmap2 );
- case 4:
- return code_to_index4( charcode, &cmap->c.cmap4 );
- case 6:
- return code_to_index6( charcode, &cmap->c.cmap6 );
- default:
- return 0;
- }
- }
-
-
-/*******************************************************************
- *
- * Function : code_to_index0
- *
- * Description : Converts the character code into a glyph index.
- * Uses format 0.
- * charCode will be masked to get a value in the range
- * 0x00-0xFF.
- *
- * Input : charCode the wanted character code
- * cmap0 a pointer to a cmap table in format 0
- *
- * Output : Glyph index into the glyphs array.
- * 0 if the glyph does not exist.
- *
- ******************************************************************/
-
- static UShort code_to_index0( ULong charCode,
- PCMap0 cmap0 )
- {
- if ( charCode <= 0xFF )
- return cmap0->glyphIdArray[charCode];
- else
- return 0;
- }
-
-
-/*******************************************************************
- *
- * Function : code_to_index2
- *
- * Description : Converts the character code into a glyph index.
- * Uses format 2.
- *
- * Input : charCode the wanted character code
- * cmap2 a pointer to a cmap table in format 2
- *
- * Output : Glyph index into the glyphs array.
- * 0 if the glyph does not exist.
- *
- ******************************************************************/
-
- static UShort code_to_index2( ULong charCode,
- PCMap2 cmap2 )
- {
- UShort index1, idx, offset;
- TCMap2SubHeader sh2;
-
-
- index1 = cmap2->subHeaderKeys[charCode <= 0xFF ?
- charCode : (charCode >> 8)];
-
- if ( index1 == 0 )
- {
- if ( charCode <= 0xFF )
- return cmap2->glyphIdArray[charCode]; /* 8bit character code */
- else
- return 0;
- }
- else /* 16bit character code */
- {
- if ( charCode <= 0xFF )
- return 0;
-
- sh2 = cmap2->subHeaders[index1];
-
- if ( (charCode & 0xFF) < sh2.firstCode )
- return 0;
-
- if ( (charCode & 0xFF) >= (sh2.firstCode + sh2.entryCount) )
- return 0;
-
- offset = sh2.idRangeOffset / 2 + (charCode & 0xFF) - sh2.firstCode;
- if ( offset < cmap2->numGlyphId )
- idx = cmap2->glyphIdArray[offset];
- else
- return 0;
-
- if ( idx )
- return (idx + sh2.idDelta) & 0xFFFF;
- else
- return 0;
- }
- }
-
-
-/*******************************************************************
- *
- * Function : code_to_index4
- *
- * Description : Converts the character code into a glyph index.
- * Uses format 4.
- *
- * Input : charCode the wanted character code
- * cmap4 a pointer to a cmap table in format 4
- *
- * Output : Glyph index into the glyphs array.
- * 0 if the glyph does not exist.
- *
- ******************************************************************/
-
- static UShort code_to_index4( ULong charCode,
- PCMap4 cmap4 )
- {
- UShort index1, segCount;
- UShort i;
- TCMap4Segment seg4;
-
-
- segCount = cmap4->segCountX2 / 2;
-
- for ( i = 0; i < segCount; i++ )
- if ( charCode <= cmap4->segments[i].endCount )
- break;
-
- /* Safety check - even though the last endCount should be 0xFFFF */
- if ( i >= segCount )
- return 0;
-
- seg4 = cmap4->segments[i];
-
- if ( charCode < seg4.startCount )
- return 0;
-
- if ( seg4.idRangeOffset == 0 )
- return ( charCode + seg4.idDelta ) & 0xFFFF;
- else
- {
- index1 = seg4.idRangeOffset / 2 + (charCode - seg4.startCount) -
- (segCount - i);
-
- if ( index1 < cmap4->numGlyphId )
- {
- if ( cmap4->glyphIdArray[index1] == 0 )
- return 0;
- else
- return ( cmap4->glyphIdArray[index1] + seg4.idDelta ) & 0xFFFF;
- }
- else
- return 0;
- }
- }
-
-
-/*******************************************************************
- *
- * Function : code_to_index6
- *
- * Description : Converts the character code into a glyph index.
- * Uses format 6.
- *
- * Input : charCode the wanted character code
- * cmap6 a pointer to a cmap table in format 6
- *
- * Output : Glyph index into the glyphs array.
- * 0 if the glyph does not exist (`missing character glyph').
- *
- ******************************************************************/
-
- static UShort code_to_index6( ULong charCode,
- PCMap6 cmap6 )
- {
- UShort firstCode;
-
-
- firstCode = cmap6->firstCode;
-
- if ( charCode < firstCode )
- return 0;
-
- if ( charCode >= (firstCode + cmap6->entryCount) )
- return 0;
-
- return cmap6->glyphIdArray[charCode - firstCode];
- }
-
-
-/* END */