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@ -318,26 +318,27 @@ |
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#endif /* 0 */ |
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/**********************************************************************/ |
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/**********************************************************************/ |
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/*** ***/ |
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/*** FD Select table support ***/ |
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/*** ***/ |
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/*** ***/ |
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/**********************************************************************/ |
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/**********************************************************************/ |
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/*************************************************************************/ |
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/*************************************************************************/ |
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/*** ***/ |
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/*** FD Select table support ***/ |
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/*** ***/ |
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/*************************************************************************/ |
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/*************************************************************************/ |
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static |
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void CFF_Done_FD_Select( CFF_FD_Select* select, |
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FT_Stream stream ) |
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{ |
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if (select->data) |
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if ( select->data ) |
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RELEASE_Frame( select->data ); |
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select->data_size = 0; |
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select->format = 0; |
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select->range_count = 0; |
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}
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} |
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static |
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@ -349,42 +350,44 @@ |
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FT_Error error; |
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FT_Byte format; |
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FT_UInt num_ranges; |
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/* read format */ |
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if ( FILE_Seek(offset) || READ_Byte(format) ) |
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if ( FILE_Seek( offset ) || READ_Byte( format ) ) |
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goto Exit; |
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select->format = format; |
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select->cache_count = 0; /* clear cache */ |
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switch (format) |
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switch ( format ) |
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{ |
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case 0: /* format 0, that's simple */ |
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{ |
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select->data_size = num_glyphs; |
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goto Load_Data; |
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} |
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case 3: /* format 3, a tad more complex */ |
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{ |
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if ( READ_UShort(num_ranges) ) |
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goto Exit; |
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select->data_size = num_ranges*3+2; |
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Load_Data:
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if ( EXTRACT_Frame( select->data_size, select->data ) ) |
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goto Exit; |
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} |
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break; |
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default: /* humm.. that's wrong */ |
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error = FT_Err_Invalid_File_Format; |
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case 0: /* format 0, that's simple */ |
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{ |
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select->data_size = num_glyphs; |
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goto Load_Data; |
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} |
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case 3: /* format 3, a tad more complex */ |
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{ |
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if ( READ_UShort( num_ranges ) ) |
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goto Exit; |
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select->data_size = num_ranges * 3 + 2; |
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Load_Data: |
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if ( EXTRACT_Frame( select->data_size, select->data ) ) |
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goto Exit; |
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} |
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break; |
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default: /* humm... that's wrong */ |
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error = FT_Err_Invalid_File_Format; |
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} |
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Exit: |
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return error; |
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}
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} |
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LOCAL_FUNC |
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@ -392,68 +395,70 @@ |
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FT_UInt glyph_index ) |
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{ |
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FT_Byte fd = 0; |
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switch (select->format) |
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switch ( select->format ) |
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{ |
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case 0: |
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fd = select->data[glyph_index]; |
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case 0: |
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fd = select->data[glyph_index]; |
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break; |
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case 3: |
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/* first, compare to cache */ |
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if ( (FT_UInt)(glyph_index-select->cache_first) < select->cache_count ) |
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{ |
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fd = select->cache_fd; |
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break; |
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case 3: |
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/* first, compare to cache */ |
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if ((FT_UInt)(glyph_index-select->cache_first) < select->cache_count) |
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{ |
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fd = select->cache_fd; |
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break; |
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} |
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/* then, lookup the ranges array */ |
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} |
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/* then, lookup the ranges array */ |
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{ |
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FT_Byte* p = select->data; |
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FT_Byte* p_limit = p + select->data_size; |
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FT_Byte fd2; |
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FT_UInt first, limit; |
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first = NEXT_UShort( p ); |
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do |
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{ |
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FT_Byte* p = select->data; |
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FT_Byte* p_limit = p + select->data_size; |
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FT_Byte fd2; |
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FT_UInt first, limit; |
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first = NEXT_UShort(p); |
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do |
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if ( glyph_index < first ) |
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break; |
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fd2 = *p++; |
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limit = NEXT_UShort( p ); |
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if ( glyph_index < limit ) |
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{ |
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if (glyph_index < first) |
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break; |
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fd2 = *p++; |
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limit = NEXT_UShort(p); |
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if (glyph_index < limit) |
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{ |
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fd = fd2; |
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/* update cache */ |
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select->cache_first = first; |
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select->cache_count = limit-first; |
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select->cache_fd = fd2; |
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break; |
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} |
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first = limit; |
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fd = fd2; |
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/* update cache */ |
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select->cache_first = first; |
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select->cache_count = limit-first; |
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select->cache_fd = fd2; |
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break; |
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} |
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while (p < p_limit); |
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} |
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break; |
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default: |
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; |
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first = limit; |
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} while ( p < p_limit ); |
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} |
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break; |
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default: |
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; |
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} |
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return fd; |
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}
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} |
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/*************************************************************************/ |
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/*************************************************************************/ |
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/*** ***/ |
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/*** CFF font support ***/ |
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/*** ***/ |
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/*************************************************************************/ |
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/*************************************************************************/ |
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/**********************************************************************/ |
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/**********************************************************************/ |
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/*** ***/ |
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/*** CFF font support ***/ |
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/*** ***/ |
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/*** ***/ |
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/**********************************************************************/ |
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/**********************************************************************/ |
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static |
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FT_Error CFF_Load_SubFont( CFF_SubFont* font, |
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@ -462,12 +467,13 @@ |
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FT_Stream stream, |
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FT_ULong base_offset ) |
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{ |
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FT_Error error; |
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T2_Parser parser; |
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FT_Byte* dict; |
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FT_ULong dict_len; |
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FT_Error error; |
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T2_Parser parser; |
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FT_Byte* dict; |
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FT_ULong dict_len; |
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CFF_Font_Dict* top = &font->font_dict; |
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CFF_Private* priv = &font->private_dict; |
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CFF_Private* priv = &font->private_dict; |
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T2_Parser_Init( &parser, T2CODE_TOPDICT, &font->font_dict ); |
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@ -494,11 +500,11 @@ |
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goto Exit; |
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/* parse the private dictionary, if any */ |
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if ( top->private_offset && top->private_size) |
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if ( top->private_offset && top->private_size ) |
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{ |
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/* set defaults */ |
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MEM_Set( priv, 0, sizeof(*priv) ); |
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MEM_Set( priv, 0, sizeof ( *priv ) ); |
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priv->blue_shift = 7; |
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priv->blue_fuzz = 1; |
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priv->lenIV = -1; |
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@ -508,7 +514,7 @@ |
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T2_Parser_Init( &parser, T2CODE_PRIVATE, priv ); |
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if ( FILE_Seek( base_offset + font->font_dict.private_offset ) || |
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ACCESS_Frame( font->font_dict.private_size ) ) |
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ACCESS_Frame( font->font_dict.private_size ) ) |
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goto Exit; |
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error = T2_Parser_Run( &parser, |
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@ -529,7 +535,7 @@ |
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error = t2_new_cff_index( &font->local_subrs_index, stream, 1 ); |
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if ( error ) |
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goto Exit; |
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font->num_local_subrs = font->local_subrs_index.count; |
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error = t2_explicit_cff_index( &font->local_subrs_index, |
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&font->local_subrs ); |
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@ -544,13 +550,12 @@ |
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void CFF_Done_SubFont( FT_Memory memory, |
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CFF_SubFont* subfont ) |
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{ |
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if (subfont) |
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if ( subfont ) |
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{ |
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t2_done_cff_index( &subfont->local_subrs_index ); |
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FREE( subfont->local_subrs ); |
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} |
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}
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} |
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LOCAL_FUNC |
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@ -599,7 +604,7 @@ |
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/* read the name, top dict, string and global subrs index */ |
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error = t2_new_cff_index( &font->name_index, stream, 0 ) || |
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t2_new_cff_index( &font->font_dict_index, stream, 0 ) || |
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t2_new_cff_index( &font->font_dict_index, stream, 0 ) || |
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t2_new_cff_index( &font->string_index, stream, 0 ) || |
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t2_new_cff_index( &font->global_subrs_index, stream, 1 ); |
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if ( error ) |
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@ -615,16 +620,16 @@ |
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} |
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/* in case of a font format check, simply exit now */ |
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if (face_index < 0) |
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if ( face_index < 0 ) |
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goto Exit; |
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/* now, parse the top-level font dictionary */ |
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error = CFF_Load_SubFont( &font->top_font, |
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&font->font_dict_index, |
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face_index, |
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stream, |
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base_offset ); |
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if (error) |
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if ( error ) |
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goto Exit; |
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/* now, check for a CID font */ |
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@ -634,20 +639,22 @@ |
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CFF_SubFont* sub; |
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FT_UInt index; |
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/* this is a CID-keyed font, we must now allocate a table of */ |
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/* sub-fonts, then load each of them separately.. */ |
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/* sub-fonts, then load each of them separately */ |
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if ( FILE_Seek( base_offset + dict->cid_fd_array_offset ) ) |
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goto Exit; |
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error = t2_new_cff_index( &fd_index, stream, 0 ); |
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if (error) goto Exit; |
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if (fd_index.count > CFF_MAX_CID_FONTS) |
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if ( error ) |
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goto Exit; |
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if ( fd_index.count > CFF_MAX_CID_FONTS ) |
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{ |
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FT_ERROR(( "T2_Load_CFF_Font: FD array too large in CID font\n" )); |
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goto Fail_CID; |
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} |
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/* allocate & read each font dict independently */ |
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font->num_subfonts = fd_index.count; |
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if ( ALLOC_ARRAY( sub, fd_index.count, CFF_SubFont ) ) |
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@ -656,13 +663,15 @@ |
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/* setup pointer table */ |
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for ( index = 0; index < fd_index.count; index++ ) |
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font->subfonts[index] = sub + index; |
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/* now load each sub font independently */ |
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for ( index = 0; index < fd_index.count; index++ ) |
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{ |
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sub = font->subfonts[index]; |
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error = CFF_Load_SubFont( sub, &fd_index, index, stream, base_offset ); |
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if (error) goto Fail_CID; |
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error = CFF_Load_SubFont( sub, &fd_index, index, |
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stream, base_offset ); |
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if ( error ) |
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goto Fail_CID; |
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} |
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/* now load the FD Select array */ |
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@ -673,8 +682,8 @@ |
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Fail_CID: |
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t2_done_cff_index( &fd_index ); |
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if (error) |
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if ( error ) |
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goto Exit; |
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} |
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else |
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@ -713,28 +722,27 @@ |
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} |
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LOCAL_FUNC |
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void T2_Done_CFF_Font( CFF_Font* font ) |
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{ |
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FT_Memory memory = font->memory; |
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FT_UInt index; |
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t2_done_cff_index( &font->global_subrs_index ); |
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t2_done_cff_index( &font->string_index ); |
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t2_done_cff_index( &font->font_dict_index ); |
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t2_done_cff_index( &font->name_index ); |
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t2_done_cff_index( &font->charstrings_index ); |
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/* release font dictionaries */ |
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for ( index = 0; index < font->num_subfonts; index++ ) |
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CFF_Done_SubFont( memory, font->subfonts[index] ); |
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CFF_Done_SubFont( memory, &font->top_font ); |
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CFF_Done_FD_Select( &font->fd_select, font->stream ); |
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FREE( font->global_subrs ); |
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FREE( font->font_name ); |
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} |
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Werner Lemberg
25 years ago