diff options
Diffstat (limited to 'Build/source/libs/freetype2/src/cid/cidload.c')
-rw-r--r-- | Build/source/libs/freetype2/src/cid/cidload.c | 413 |
1 files changed, 254 insertions, 159 deletions
diff --git a/Build/source/libs/freetype2/src/cid/cidload.c b/Build/source/libs/freetype2/src/cid/cidload.c index 56112919876..8d96ea6ee46 100644 --- a/Build/source/libs/freetype2/src/cid/cidload.c +++ b/Build/source/libs/freetype2/src/cid/cidload.c @@ -4,7 +4,7 @@ /* */ /* CID-keyed Type1 font loader (body). */ /* */ -/* Copyright 1996-2001 by */ +/* Copyright 1996-2001, 2002, 2003, 2004, 2005 by */ /* David Turner, Robert Wilhelm, and Werner Lemberg. */ /* */ /* This file is part of the FreeType project, and may only be used, */ @@ -26,9 +26,6 @@ #include "ciderrs.h" -#include <stdio.h> -#include <ctype.h> /* for isspace(), isalnum() */ - /*************************************************************************/ /* */ @@ -41,8 +38,8 @@ /* read a single offset */ - FT_LOCAL_DEF FT_Long - cid_get_offset( FT_Byte** start, + FT_LOCAL_DEF( FT_Long ) + cid_get_offset( FT_Byte* *start, FT_Byte offsize ) { FT_Long result; @@ -60,24 +57,6 @@ } - FT_LOCAL_DEF void - cid_decrypt( FT_Byte* buffer, - FT_Offset length, - FT_UShort seed ) - { - while ( length > 0 ) - { - FT_Byte plain; - - - plain = (FT_Byte)( *buffer ^ ( seed >> 8 ) ); - seed = (FT_UShort)( ( *buffer + seed ) * 52845U + 22719 ); - *buffer++ = plain; - length--; - } - } - - /*************************************************************************/ /*************************************************************************/ /***** *****/ @@ -88,19 +67,19 @@ static FT_Error - cid_load_keyword( CID_Face face, - CID_Loader* loader, - const T1_Field* keyword ) + cid_load_keyword( CID_Face face, + CID_Loader* loader, + const T1_Field keyword ) { - FT_Error error; - CID_Parser* parser = &loader->parser; - FT_Byte* object; - void* dummy_object; - CID_Info* cid = &face->cid; + FT_Error error; + CID_Parser* parser = &loader->parser; + FT_Byte* object; + void* dummy_object; + CID_FaceInfo cid = &face->cid; /* if the keyword has a dedicated callback, call it */ - if ( keyword->type == t1_field_callback ) + if ( keyword->type == T1_FIELD_TYPE_CALLBACK ) { keyword->reader( (FT_Face)face, parser ); error = parser->root.error; @@ -110,17 +89,21 @@ /* we must now compute the address of our target object */ switch ( keyword->location ) { - case t1_field_cid_info: + case T1_FIELD_LOCATION_CID_INFO: object = (FT_Byte*)cid; break; - case t1_field_font_info: + case T1_FIELD_LOCATION_FONT_INFO: object = (FT_Byte*)&cid->font_info; break; + case T1_FIELD_LOCATION_BBOX: + object = (FT_Byte*)&cid->font_bbox; + break; + default: { - CID_FontDict* dict; + CID_FaceDict dict; if ( parser->num_dict < 0 ) @@ -134,7 +117,7 @@ dict = cid->font_dicts + parser->num_dict; switch ( keyword->location ) { - case t1_field_private: + case T1_FIELD_LOCATION_PRIVATE: object = (FT_Byte*)&dict->private_dict; break; @@ -147,46 +130,28 @@ dummy_object = object; /* now, load the keyword data in the object's field(s) */ - if ( keyword->type == t1_field_integer_array || - keyword->type == t1_field_fixed_array ) - error = CID_Load_Field_Table( &loader->parser, keyword, - &dummy_object ); + if ( keyword->type == T1_FIELD_TYPE_INTEGER_ARRAY || + keyword->type == T1_FIELD_TYPE_FIXED_ARRAY ) + error = cid_parser_load_field_table( &loader->parser, keyword, + &dummy_object ); else - error = CID_Load_Field( &loader->parser, keyword, &dummy_object ); + error = cid_parser_load_field( &loader->parser, + keyword, &dummy_object ); Exit: return error; } FT_CALLBACK_DEF( FT_Error ) - parse_font_bbox( CID_Face face, - CID_Parser* parser ) - { - FT_Fixed temp[4]; - FT_BBox* bbox = &face->cid.font_bbox; - - - (void)CID_ToFixedArray( parser, 4, temp, 0 ); - bbox->xMin = FT_RoundFix( temp[0] ); - bbox->yMin = FT_RoundFix( temp[1] ); - bbox->xMax = FT_RoundFix( temp[2] ); - bbox->yMax = FT_RoundFix( temp[3] ); - - return CID_Err_Ok; /* this is a callback function; */ - /* we must return an error code */ - } - - - FT_CALLBACK_DEF( FT_Error ) parse_font_matrix( CID_Face face, CID_Parser* parser ) { - FT_Matrix* matrix; - FT_Vector* offset; - CID_FontDict* dict; - FT_Face root = (FT_Face)&face->root; - FT_Fixed temp[6]; - FT_Fixed temp_scale; + FT_Matrix* matrix; + FT_Vector* offset; + CID_FaceDict dict; + FT_Face root = (FT_Face)&face->root; + FT_Fixed temp[6]; + FT_Fixed temp_scale; if ( parser->num_dict >= 0 ) @@ -195,13 +160,13 @@ matrix = &dict->font_matrix; offset = &dict->font_offset; - (void)CID_ToFixedArray( parser, 6, temp, 3 ); + (void)cid_parser_to_fixed_array( parser, 6, temp, 3 ); - temp_scale = ABS( temp[3] ); + temp_scale = FT_ABS( temp[3] ); - /* Set Units per EM based on FontMatrix values. We set the value to */ + /* Set units per EM based on FontMatrix values. We set the value to */ /* `1000/temp_scale', because temp_scale was already multiplied by */ - /* 1000 (in t1_tofixed(), from psobjs.c). */ + /* 1000 (in `t1_tofixed', from psobjs.c). */ root->units_per_EM = (FT_UShort)( FT_DivFix( 0x10000L, FT_DivFix( temp_scale, 1000 ) ) ); @@ -226,7 +191,7 @@ offset->y = temp[5] >> 16; } - return CID_Err_Ok; /* this is a callback function; */ + return CID_Err_Ok; /* this is a callback function; */ /* we must return an error code */ } @@ -235,20 +200,20 @@ parse_fd_array( CID_Face face, CID_Parser* parser ) { - CID_Info* cid = &face->cid; - FT_Memory memory = face->root.memory; - FT_Error error = CID_Err_Ok; - FT_Long num_dicts; + CID_FaceInfo cid = &face->cid; + FT_Memory memory = face->root.memory; + FT_Error error = CID_Err_Ok; + FT_Long num_dicts; - num_dicts = CID_ToInt( parser ); + num_dicts = cid_parser_to_int( parser ); if ( !cid->font_dicts ) { FT_Int n; - if ( ALLOC_ARRAY( cid->font_dicts, num_dicts, CID_FontDict ) ) + if ( FT_NEW_ARRAY( cid->font_dicts, num_dicts ) ) goto Exit; cid->num_dicts = (FT_UInt)num_dicts; @@ -256,7 +221,7 @@ /* don't forget to set a few defaults */ for ( n = 0; n < cid->num_dicts; n++ ) { - CID_FontDict* dict = cid->font_dicts + n; + CID_FaceDict dict = cid->font_dicts + n; /* default value for lenIV */ @@ -270,25 +235,16 @@ static - const T1_Field cid_field_records[] = + const T1_FieldRec cid_field_records[] = { #include "cidtoken.h" - T1_FIELD_CALLBACK( "FontBBox", parse_font_bbox ) - T1_FIELD_CALLBACK( "FDArray", parse_fd_array ) + T1_FIELD_CALLBACK( "FDArray", parse_fd_array ) T1_FIELD_CALLBACK( "FontMatrix", parse_font_matrix ) - { 0, t1_field_cid_info, t1_field_none, 0, 0, 0, 0, 0 } - }; - - static int - is_alpha( char c ) - { - return ( isalnum( (int)c ) || - c == '.' || - c == '_' ); - } + { 0, T1_FIELD_LOCATION_CID_INFO, T1_FIELD_TYPE_NONE, 0, 0, 0, 0, 0 } + }; static FT_Error @@ -302,44 +258,61 @@ parser->root.cursor = base; parser->root.limit = base + size; - parser->root.error = 0; + parser->root.error = CID_Err_Ok; { FT_Byte* cur = base; FT_Byte* limit = cur + size; - for ( ;cur < limit; cur++ ) + for (;;) { + FT_Byte* newlimit; + + + parser->root.cursor = cur; + cid_parser_skip_spaces( parser ); + + if ( parser->root.cursor >= limit ) + newlimit = limit - 1 - 17; + else + newlimit = parser->root.cursor - 17; + /* look for `%ADOBeginFontDict' */ - if ( *cur == '%' && cur + 20 < limit && - strncmp( (char*)cur, "%ADOBeginFontDict", 17 ) == 0 ) + for ( ; cur < newlimit; cur++ ) { - cur += 17; - - /* if /FDArray was found, then cid->num_dicts is > 0, and */ - /* we can start increasing parser->num_dict */ - if ( face->cid.num_dicts > 0 ) - parser->num_dict++; + if ( *cur == '%' && + ft_strncmp( (char*)cur, "%ADOBeginFontDict", 17 ) == 0 ) + { + /* if /FDArray was found, then cid->num_dicts is > 0, and */ + /* we can start increasing parser->num_dict */ + if ( face->cid.num_dicts > 0 ) + parser->num_dict++; + } } + + cur = parser->root.cursor; + /* no error can occur in cid_parser_skip_spaces */ + if ( cur >= limit ) + break; + + cid_parser_skip_PS_token( parser ); + if ( parser->root.cursor >= limit || parser->root.error ) + break; + /* look for immediates */ - else if ( *cur == '/' && cur + 2 < limit ) + if ( *cur == '/' && cur + 2 < limit ) { - FT_Byte* cur2; - FT_Int len; + FT_PtrDist len; cur++; + len = parser->root.cursor - cur; - cur2 = cur; - while ( cur2 < limit && is_alpha( *cur2 ) ) - cur2++; - - len = (FT_Int)( cur2 - cur ); if ( len > 0 && len < 22 ) { /* now compare the immediate name to the keyword table */ - const T1_Field* keyword = cid_field_records; + T1_Field keyword = (T1_Field)cid_field_records; for (;;) @@ -351,10 +324,10 @@ if ( !name ) break; - if ( cur[0] == name[0] && - len == (FT_Int)strlen( (const char*)name ) ) + if ( cur[0] == name[0] && + len == (FT_PtrDist)ft_strlen( (const char*)name ) ) { - FT_Int n; + FT_PtrDist n; for ( n = 1; n < len; n++ ) @@ -364,15 +337,11 @@ if ( n >= len ) { /* we found it - run the parsing callback */ - parser->root.cursor = cur2; - CID_Skip_Spaces( parser ); parser->root.error = cid_load_keyword( face, loader, keyword ); if ( parser->root.error ) return parser->root.error; - - cur = parser->root.cursor; break; } } @@ -380,6 +349,8 @@ } } } + + cur = parser->root.cursor; } } return parser->root.error; @@ -390,68 +361,69 @@ static FT_Error cid_read_subrs( CID_Face face ) { - CID_Info* cid = &face->cid; - FT_Memory memory = face->root.memory; - FT_Stream stream = face->root.stream; - FT_Error error; - FT_Int n; - CID_Subrs* subr; - FT_UInt max_offsets = 0; - FT_ULong* offsets = 0; - - - if ( ALLOC_ARRAY( face->subrs, cid->num_dicts, CID_Subrs ) ) + CID_FaceInfo cid = &face->cid; + FT_Memory memory = face->root.memory; + FT_Stream stream = face->cid_stream; + FT_Error error; + FT_Int n; + CID_Subrs subr; + FT_UInt max_offsets = 0; + FT_ULong* offsets = 0; + PSAux_Service psaux = (PSAux_Service)face->psaux; + + + if ( FT_NEW_ARRAY( face->subrs, cid->num_dicts ) ) goto Exit; subr = face->subrs; for ( n = 0; n < cid->num_dicts; n++, subr++ ) { - CID_FontDict* dict = cid->font_dicts + n; - FT_Int lenIV = dict->private_dict.lenIV; - FT_UInt count, num_subrs = dict->num_subrs; - FT_ULong data_len; - FT_Byte* p; + CID_FaceDict dict = cid->font_dicts + n; + FT_Int lenIV = dict->private_dict.lenIV; + FT_UInt count, num_subrs = dict->num_subrs; + FT_ULong data_len; + FT_Byte* p; /* reallocate offsets array if needed */ if ( num_subrs + 1 > max_offsets ) { - FT_UInt new_max = ( num_subrs + 1 + 3 ) & -4; + FT_UInt new_max = FT_PAD_CEIL( num_subrs + 1, 4 ); - if ( REALLOC_ARRAY( offsets, max_offsets, new_max, FT_ULong ) ) + if ( FT_RENEW_ARRAY( offsets, max_offsets, new_max ) ) goto Fail; max_offsets = new_max; } /* read the subrmap's offsets */ - if ( FILE_Seek( cid->data_offset + dict->subrmap_offset ) || - ACCESS_Frame( ( num_subrs + 1 ) * dict->sd_bytes ) ) + if ( FT_STREAM_SEEK( cid->data_offset + dict->subrmap_offset ) || + FT_FRAME_ENTER( ( num_subrs + 1 ) * dict->sd_bytes ) ) goto Fail; p = (FT_Byte*)stream->cursor; for ( count = 0; count <= num_subrs; count++ ) offsets[count] = cid_get_offset( &p, (FT_Byte)dict->sd_bytes ); - FORGET_Frame(); + FT_FRAME_EXIT(); /* now, compute the size of subrs charstrings, */ /* allocate, and read them */ data_len = offsets[num_subrs] - offsets[0]; - if ( ALLOC_ARRAY( subr->code, num_subrs + 1, FT_Byte* ) || - ALLOC( subr->code[0], data_len ) ) + if ( FT_NEW_ARRAY( subr->code, num_subrs + 1 ) || + FT_ALLOC( subr->code[0], data_len ) ) goto Fail; - if ( FILE_Seek( cid->data_offset + offsets[0] ) || - FILE_Read( subr->code[0], data_len ) ) + if ( FT_STREAM_SEEK( cid->data_offset + offsets[0] ) || + FT_STREAM_READ( subr->code[0], data_len ) ) goto Fail; /* set up pointers */ for ( count = 1; count <= num_subrs; count++ ) { - FT_UInt len; + FT_ULong len; len = offsets[count] - offsets[count - 1]; @@ -463,11 +435,11 @@ { for ( count = 0; count < num_subrs; count++ ) { - FT_UInt len; + FT_ULong len; len = offsets[count + 1] - offsets[count]; - cid_decrypt( subr->code[count], len, 4330 ); + psaux->t1_decrypt( subr->code[count], len, 4330 ); } } @@ -475,7 +447,7 @@ } Exit: - FREE( offsets ); + FT_FREE( offsets ); return error; Fail: @@ -484,11 +456,11 @@ for ( n = 0; n < cid->num_dicts; n++ ) { if ( face->subrs[n].code ) - FREE( face->subrs[n].code[0] ); + FT_FREE( face->subrs[n].code[0] ); - FREE( face->subrs[n].code ); + FT_FREE( face->subrs[n].code ); } - FREE( face->subrs ); + FT_FREE( face->subrs ); } goto Exit; } @@ -500,7 +472,7 @@ { FT_UNUSED( face ); - MEM_Set( loader, 0, sizeof ( *loader ) ); + FT_MEM_ZERO( loader, sizeof ( *loader ) ); } @@ -511,23 +483,123 @@ /* finalize parser */ - CID_Done_Parser( parser ); + cid_parser_done( parser ); } - FT_LOCAL_DEF FT_Error - CID_Open_Face( CID_Face face ) + static FT_Error + cid_hex_to_binary( FT_Byte* data, + FT_Long data_len, + FT_ULong offset, + CID_Face face ) { - CID_Loader loader; - CID_Parser* parser; + FT_Stream stream = face->root.stream; FT_Error error; + FT_Byte buffer[256]; + FT_Byte *p, *plimit; + FT_Byte *d, *dlimit; + FT_Byte val; + + FT_Bool upper_nibble, done; + + + if ( FT_STREAM_SEEK( offset ) ) + goto Exit; + + d = data; + dlimit = d + data_len; + p = buffer; + plimit = p; + + upper_nibble = 1; + done = 0; + + while ( d < dlimit ) + { + if ( p >= plimit ) + { + FT_ULong oldpos = FT_STREAM_POS(); + FT_ULong size = stream->size - oldpos; + + + if ( size == 0 ) + { + error = CID_Err_Syntax_Error; + goto Exit; + } + + if ( FT_STREAM_READ( buffer, 256 > size ? size : 256 ) ) + goto Exit; + p = buffer; + plimit = p + FT_STREAM_POS() - oldpos; + } + + if ( ft_isdigit( *p ) ) + val = (FT_Byte)( *p - '0' ); + else if ( *p >= 'a' && *p <= 'f' ) + val = (FT_Byte)( *p - 'a' ); + else if ( *p >= 'A' && *p <= 'F' ) + val = (FT_Byte)( *p - 'A' + 10 ); + else if ( *p == ' ' || + *p == '\t' || + *p == '\r' || + *p == '\n' || + *p == '\f' || + *p == '\0' ) + { + p++; + continue; + } + else if ( *p == '>' ) + { + val = 0; + done = 1; + } + else + { + error = CID_Err_Syntax_Error; + goto Exit; + } + + if ( upper_nibble ) + *d = (FT_Byte)( val << 4 ); + else + { + *d = (FT_Byte)( *d + val ); + d++; + } + + upper_nibble = (FT_Byte)( 1 - upper_nibble ); + + if ( done ) + break; + + p++; + } + + error = CID_Err_Ok; + + Exit: + return error; + } + + + FT_LOCAL_DEF( FT_Error ) + cid_face_open( CID_Face face, + FT_Int face_index ) + { + CID_Loader loader; + CID_Parser* parser; + FT_Memory memory = face->root.memory; + FT_Error error; + t1_init_loader( &loader, face ); parser = &loader.parser; - error = CID_New_Parser( parser, face->root.stream, face->root.memory, - (PSAux_Interface*)face->psaux ); + error = cid_parser_new( parser, face->root.stream, face->root.memory, + (PSAux_Service)face->psaux ); if ( error ) goto Exit; @@ -537,7 +609,30 @@ if ( error ) goto Exit; - face->cid.data_offset = loader.parser.data_offset; + if ( face_index < 0 ) + goto Exit; + + if ( FT_NEW( face->cid_stream ) ) + goto Exit; + + if ( parser->binary_length ) + { + /* we must convert the data section from hexadecimal to binary */ + if ( FT_ALLOC( face->binary_data, parser->binary_length ) || + cid_hex_to_binary( face->binary_data, parser->binary_length, + parser->data_offset, face ) ) + goto Exit; + + FT_Stream_OpenMemory( face->cid_stream, + face->binary_data, parser->binary_length ); + face->cid.data_offset = 0; + } + else + { + *face->cid_stream = *face->root.stream; + face->cid.data_offset = loader.parser.data_offset; + } + error = cid_read_subrs( face ); Exit: |