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path: root/src/freetype2/cff/cffload.c
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Diffstat (limited to 'src/freetype2/cff/cffload.c')
-rw-r--r--src/freetype2/cff/cffload.c98
1 files changed, 69 insertions, 29 deletions
diff --git a/src/freetype2/cff/cffload.c b/src/freetype2/cff/cffload.c
index dd2f113..64d1395 100644
--- a/src/freetype2/cff/cffload.c
+++ b/src/freetype2/cff/cffload.c
@@ -4,7 +4,7 @@
/* */
/* OpenType and CFF data/program tables loader (body). */
/* */
-/* Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006, 2007 by */
+/* Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@@ -31,6 +31,7 @@
#if 1
+
static const FT_UShort cff_isoadobe_charset[229] =
{
0, 1, 2, 3, 4, 5, 6, 7,
@@ -175,13 +176,15 @@
363, 364, 365, 366, 367, 368, 369, 370,
371, 372, 373, 374, 375, 376, 377, 378
};
-#endif
+
+#endif /* 1 */
FT_LOCAL_DEF( FT_UShort )
cff_get_standard_encoding( FT_UInt charcode )
{
- return (FT_UShort)(charcode < 256 ? cff_standard_encoding[charcode] : 0);
+ return (FT_UShort)( charcode < 256 ? cff_standard_encoding[charcode]
+ : 0 );
}
@@ -316,7 +319,7 @@
static FT_Error
cff_index_load_offsets( CFF_Index idx )
{
- FT_Error error = 0;
+ FT_Error error = CFF_Err_Ok;
FT_Stream stream = idx->stream;
FT_Memory memory = stream->memory;
@@ -399,6 +402,7 @@
old_offset = 1;
for ( n = 0; n <= idx->count; n++ )
{
+ /* at this point, `idx->offsets' can't be NULL */
offset = idx->offsets[n];
if ( !offset )
offset = old_offset;
@@ -732,6 +736,7 @@
{
FT_Error error = FT_Err_Ok;
FT_UInt i;
+ FT_Long j;
FT_UShort max_cid = 0;
@@ -746,8 +751,11 @@
if ( FT_NEW_ARRAY( charset->cids, max_cid ) )
goto Exit;
- for ( i = 0; i < num_glyphs; i++ )
- charset->cids[charset->sids[i]] = (FT_UShort)i;
+ /* When multiple GIDs map to the same CID, we choose the lowest */
+ /* GID. This is not described in any spec, but it matches the */
+ /* behaviour of recent Acroread versions. */
+ for ( j = num_glyphs - 1; j >= 0 ; j-- )
+ charset->cids[charset->sids[j]] = (FT_UShort)j;
charset->max_cid = max_cid;
charset->num_glyphs = num_glyphs;
@@ -838,7 +846,20 @@
goto Exit;
for ( j = 1; j < num_glyphs; j++ )
- charset->sids[j] = FT_GET_USHORT();
+ {
+ FT_UShort sid = FT_GET_USHORT();
+
+
+ /* this constant is given in the CFF specification */
+ if ( sid < 65000L )
+ charset->sids[j] = sid;
+ else
+ {
+ FT_TRACE0(( "cff_charset_load:"
+ " invalid SID value %d set to zero\n", sid ));
+ charset->sids[j] = 0;
+ }
+ }
FT_FRAME_EXIT();
}
@@ -871,6 +892,20 @@
goto Exit;
}
+ /* check whether the range contains at least one valid glyph; */
+ /* the constant is given in the CFF specification */
+ if ( glyph_sid >= 65000L ) {
+ FT_ERROR(( "cff_charset_load: invalid SID range\n" ));
+ error = CFF_Err_Invalid_File_Format;
+ goto Exit;
+ }
+
+ /* try to rescue some of the SIDs if `nleft' is too large */
+ if ( nleft > 65000L - 1L || glyph_sid >= 65000L - nleft ) {
+ FT_ERROR(( "cff_charset_load: invalid SID range trimmed\n" ));
+ nleft = ( FT_UInt )( 65000L - 1L - glyph_sid );
+ }
+
/* Fill in the range of sids -- `nleft + 1' glyphs. */
for ( i = 0; j < num_glyphs && i <= nleft; i++, j++, glyph_sid++ )
charset->sids[j] = glyph_sid;
@@ -879,7 +914,7 @@
break;
default:
- FT_ERROR(( "cff_charset_load: invalid table format!\n" ));
+ FT_ERROR(( "cff_charset_load: invalid table format\n" ));
error = CFF_Err_Invalid_File_Format;
goto Exit;
}
@@ -902,7 +937,7 @@
if ( num_glyphs > 229 )
{
FT_ERROR(( "cff_charset_load: implicit charset larger than\n"
- "predefined charset (Adobe ISO-Latin)!\n" ));
+ "predefined charset (Adobe ISO-Latin)\n" ));
error = CFF_Err_Invalid_File_Format;
goto Exit;
}
@@ -920,7 +955,7 @@
if ( num_glyphs > 166 )
{
FT_ERROR(( "cff_charset_load: implicit charset larger than\n"
- "predefined charset (Adobe Expert)!\n" ));
+ "predefined charset (Adobe Expert)\n" ));
error = CFF_Err_Invalid_File_Format;
goto Exit;
}
@@ -938,7 +973,7 @@
if ( num_glyphs > 87 )
{
FT_ERROR(( "cff_charset_load: implicit charset larger than\n"
- "predefined charset (Adobe Expert Subset)!\n" ));
+ "predefined charset (Adobe Expert Subset)\n" ));
error = CFF_Err_Invalid_File_Format;
goto Exit;
}
@@ -1123,7 +1158,7 @@
break;
default:
- FT_ERROR(( "cff_encoding_load: invalid table format!\n" ));
+ FT_ERROR(( "cff_encoding_load: invalid table format\n" ));
error = CFF_Err_Invalid_File_Format;
goto Exit;
}
@@ -1218,7 +1253,7 @@
break;
default:
- FT_ERROR(( "cff_encoding_load: invalid table format!\n" ));
+ FT_ERROR(( "cff_encoding_load: invalid table format\n" ));
error = CFF_Err_Invalid_File_Format;
goto Exit;
}
@@ -1236,7 +1271,8 @@
CFF_Index idx,
FT_UInt font_index,
FT_Stream stream,
- FT_ULong base_offset )
+ FT_ULong base_offset,
+ FT_Library library )
{
FT_Error error;
CFF_ParserRec parser;
@@ -1246,7 +1282,7 @@
CFF_Private priv = &font->private_dict;
- cff_parser_init( &parser, CFF_CODE_TOPDICT, &font->font_dict );
+ cff_parser_init( &parser, CFF_CODE_TOPDICT, &font->font_dict, library );
/* set defaults */
FT_MEM_ZERO( top, sizeof ( *top ) );
@@ -1272,8 +1308,9 @@
top->cid_ordering = 0xFFFFU;
top->cid_font_name = 0xFFFFU;
- error = cff_index_access_element( idx, font_index, &dict, &dict_len ) ||
- cff_parser_run( &parser, dict, dict + dict_len );
+ error = cff_index_access_element( idx, font_index, &dict, &dict_len );
+ if ( !error )
+ error = cff_parser_run( &parser, dict, dict + dict_len );
cff_index_forget_element( idx, &dict );
@@ -1296,7 +1333,7 @@
priv->expansion_factor = (FT_Fixed)( 0.06 * 0x10000L );
priv->blue_scale = (FT_Fixed)( 0.039625 * 0x10000L * 1000 );
- cff_parser_init( &parser, CFF_CODE_PRIVATE, priv );
+ cff_parser_init( &parser, CFF_CODE_PRIVATE, priv, library );
if ( FT_STREAM_SEEK( base_offset + font->font_dict.private_offset ) ||
FT_FRAME_ENTER( font->font_dict.private_size ) )
@@ -1349,9 +1386,11 @@
FT_LOCAL_DEF( FT_Error )
- cff_font_load( FT_Stream stream,
+ cff_font_load( FT_Library library,
+ FT_Stream stream,
FT_Int face_index,
- CFF_Font font )
+ CFF_Font font,
+ FT_Bool pure_cff )
{
static const FT_Frame_Field cff_header_fields[] =
{
@@ -1388,7 +1427,7 @@
font->header_size < 4 ||
font->absolute_offsize > 4 )
{
- FT_TRACE2(( "[not a CFF font header!]\n" ));
+ FT_TRACE2(( "[not a CFF font header]\n" ));
error = CFF_Err_Unknown_File_Format;
goto Exit;
}
@@ -1426,7 +1465,8 @@
&font->font_dict_index,
face_index,
stream,
- base_offset );
+ base_offset,
+ library );
if ( error )
goto Exit;
@@ -1456,7 +1496,7 @@
if ( fd_index.count > CFF_MAX_CID_FONTS )
{
- FT_ERROR(( "cff_font_load: FD array too large in CID font\n" ));
+ FT_TRACE0(( "cff_font_load: FD array too large in CID font\n" ));
goto Fail_CID;
}
@@ -1474,7 +1514,7 @@
{
sub = font->subfonts[idx];
error = cff_subfont_load( sub, &fd_index, idx,
- stream, base_offset );
+ stream, base_offset, library );
if ( error )
goto Fail_CID;
}
@@ -1497,7 +1537,7 @@
/* read the charstrings index now */
if ( dict->charstrings_offset == 0 )
{
- FT_ERROR(( "cff_font_load: no charstrings offset!\n" ));
+ FT_ERROR(( "cff_font_load: no charstrings offset\n" ));
error = CFF_Err_Unknown_File_Format;
goto Exit;
}
@@ -1515,7 +1555,7 @@
/* read the Charset and Encoding tables if available */
if ( font->num_glyphs > 0 )
{
- FT_Bool invert = FT_BOOL( dict->cid_registry != 0xFFFFU );
+ FT_Bool invert = FT_BOOL( dict->cid_registry != 0xFFFFU && pure_cff );
error = cff_charset_load( &font->charset, font->num_glyphs, stream,
@@ -1535,9 +1575,6 @@
if ( error )
goto Exit;
}
- else
- /* CID-keyed fonts only need CIDs */
- FT_FREE( font->charset.sids );
}
/* get the font name (/CIDFontName for CID-keyed fonts, */
@@ -1590,6 +1627,9 @@
FT_FREE( font->font_info );
}
+ FT_FREE( font->registry );
+ FT_FREE( font->ordering );
+
FT_FREE( font->global_subrs );
FT_FREE( font->font_name );
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-01 19:25:39 +0000