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Code Issues 9 Releases Wiki Activity

* src/type1/t1load.c (parse_font_matrix, parse_charstrings): Remove 

code specially for synthetic fonts; this is handled elsewhere.
(parse_encoding): Remove code specially for synthetic fonts; this is
handled elsewhere.
Improve boundary checking while parsing.
(parse_dict): Improve boundary checking while parsing.
Use ft_memcmp to simplify code.
This commit is contained in:
Werner Lemberg 2003-10-13 05:58:54 +00:00
parent ed3a7d7b0f
commit 38c4647427
2 changed files with 42 additions and 47 deletions
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10
ChangeLog
View File

@ -1,3 +1,13 @@
2003-10-08 Werner Lemberg <wl@gnu.org>
* src/type1/t1load.c (parse_font_matrix, parse_charstrings): Remove
code specially for synthetic fonts; this is handled elsewhere.
(parse_encoding): Remove code specially for synthetic fonts; this is
handled elsewhere.
Improve boundary checking while parsing.
(parse_dict): Improve boundary checking while parsing.
Use ft_memcmp to simplify code.
2003-10-07 Werner Lemberg <wl@gnu.org>
* src/type1/t1load.c (parse_subrs, parse_dict): Handle synthetic

79
src/type1/t1load.c
View File

@ -772,9 +772,9 @@
static int
is_space( FT_Byte c )
{
return ( c == ' ' || c == '\t' ||
return ( c == ' ' || c == '\t' ||
c == '\r' || c == '\n' || c == '\f' ||
c == '\0' );
c == '\0' );
}
@ -831,10 +831,6 @@
FT_Fixed temp_scale;
if ( matrix->xx || matrix->yx )
/* with synthetic fonts it is possible we get here twice */
return;
(void)T1_ToFixedArray( parser, 6, temp, 3 );
temp_scale = ABS( temp[3] );
@ -863,8 +859,8 @@
matrix->yy = temp[3];
/* note that the offsets must be expressed in integer font units */
offset->x = temp[4] >> 16;
offset->y = temp[5] >> 16;
offset->x = temp[4] >> 16;
offset->y = temp[5] >> 16;
}
@ -899,10 +895,6 @@
FT_Error error;
if ( encode->char_index )
/* with synthetic fonts it is possible we get here twice */
return;
/* read the number of entries in the encoding; should be 256 */
count = (FT_Int)T1_ToInt( parser );
T1_Skip_Spaces( parser );
@ -941,10 +933,10 @@
/* used to clean the encoding array before anything else. */
n = 0;
T1_Skip_Spaces( parser );
while ( parser->root.cursor < limit )
{
T1_Skip_Spaces( parser );
cur = parser->root.cursor;
/* we stop when we encounter a `def' */
@ -991,6 +983,8 @@
}
else
T1_Skip_PS_Token( parser );
T1_Skip_Spaces( parser );
}
face->type1.encoding_type = T1_ENCODING_TYPE_ARRAY;
@ -1044,7 +1038,7 @@
T1_Skip_PS_Token( parser );
T1_Skip_Spaces ( parser );
if ( parser->root.cursor >= parser->root.limit ||
*parser->root.cursor != ']' )
*parser->root.cursor != ']' )
parser->root.error = T1_Err_Invalid_File_Format;
return;
}
@ -1161,10 +1155,6 @@
FT_Byte notdef_found = 0;
if ( loader->num_glyphs )
/* with synthetic fonts it is possible we get here twice */
return;
loader->num_glyphs = (FT_Int)T1_ToInt( parser );
if ( parser->root.error )
return;
@ -1187,7 +1177,6 @@
/* index 0 names and codes (if necessary). */
error = psaux->ps_table_funcs->init( swap_table, 4, memory );
if ( error )
goto Fail;
@ -1458,15 +1447,16 @@
limit = parser->root.limit;
T1_Skip_Spaces( parser );
while ( parser->root.cursor < limit )
{
FT_Byte* cur;
T1_Skip_Spaces( parser );
cur = parser->root.cursor;
/* look for `FontDirectory', which causes problems for some fonts */
/* look for `FontDirectory' which causes problems for some fonts */
if ( *cur == 'F' && cur + 25 < limit &&
ft_strncmp( (char*)cur, "FontDirectory", 13 ) == 0 )
{
@ -1524,7 +1514,7 @@
len = parser->root.cursor - cur;
if ( len > 0 && len < 22 )
if ( len > 0 && len < 22 && parser->root.cursor < limit )
{
/* now compare the immediate name to the keyword table */
T1_Field keyword = (T1_Field)t1_keywords;
@ -1543,35 +1533,27 @@
break;
}
if ( cur[0] == name[0] &&
len == ft_strlen( (const char*)name ) )
if ( cur[0] == name[0] &&
len == ft_strlen( (const char *)name ) &&
ft_memcmp( cur, name, len ) == 0 )
{
FT_PtrDist n;
for ( n = 1; n < len; n++ )
if ( cur[n] != name[n] )
break;
if ( n >= len )
/* We found it -- run the parsing callback! */
/* We only record the first instance of any */
/* field to deal adequately with synthetic */
/* fonts; /Subrs is handled specially. */
if ( keyword_flag[0] == 0 ||
ft_strcmp( (const char*)name, "Subrs" ) == 0 )
{
/* We found it -- run the parsing callback! */
/* We only record the first instance of any */
/* field to deal adequately with synthetic */
/* fonts; /Subrs is handled specially. */
if ( keyword_flag[0] == 0 ||
ft_strcmp( (const char*)name, "Subrs" ) == 0 )
{
parser->root.error = t1_load_keyword( face,
loader,
keyword );
if ( parser->root.error )
return parser->root.error;
}
keyword_flag[0] = 1;
break;
parser->root.error = t1_load_keyword( face,
loader,
keyword );
if ( parser->root.error )
return parser->root.error;
}
keyword_flag[0] = 1;
break;
}
keyword++;
keyword_flag++;
}
@ -1579,7 +1561,10 @@
}
else
T1_Skip_PS_Token( parser );
T1_Skip_Spaces( parser );
}
return parser->root.error;
}