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* src/sfnt/ttload.c (TT_Load_Names), src/sfnt/sfobjs.c (Get_Name),

Browse Source 
src/sfnt/sfdriver.c (get_sfnt_postscript_name): Fixed the loader so
	that it accepts broken fonts like "foxjump.ttf", which made FreeType
	crash when trying to load them.

	Also improved the name table parser to be able to load
	Windows-encoded entries before Macintosh or Unicode ones, since it
	seems some fonts don't have reliable values here anyway.
This commit is contained in:
David Turner 2002-03-05 16:12:57 +00:00
parent fa0c8a70f6
commit 28ea6f67c3
4 changed files with 154 additions and 84 deletions
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10
ChangeLog
View File

@ -11,6 +11,16 @@
caused the CID driver to return Postscript font names with a leading
slash ("/") as in "/MOEKai-Regular"
* src/sfnt/ttload.c (TT_Load_Names), src/sfnt/sfobjs.c (Get_Name),
src/sfnt/sfdriver.c (get_sfnt_postscript_name): Fixed the loader so
that it accepts broken fonts like "foxjump.ttf", which made FreeType
crash when trying to load them.
Also improved the name table parser to be able to load
Windows-encoded entries before Macintosh or Unicode ones, since it
seems some fonts don't have reliable values here anyway.
2002-03-05 Werner Lemberg <wl@gnu.org>
* builds/unix/aclocal.m4, builds/unix/ltmain.sh: Update to libtool

81
src/sfnt/sfdriver.c
View File

@ -114,7 +114,7 @@
static const char*
get_sfnt_postscript_name( TT_Face face )
{
FT_Int n;
FT_Int n, found_win, found_apple;
/* shouldn't happen, but just in case to avoid memory leaks */
@ -123,41 +123,66 @@
/* scan the name table to see whether we have a Postscript name here, */
/* either in Macintosh or Windows platform encodings */
found_win = -1;
found_apple = -1;
for ( n = 0; n < face->num_names; n++ )
{
TT_NameRec* name = face->name_table.names + n;
if ( name->nameID == 6 )
if ( name->nameID == 6 && name->string != NULL )
{
if ( ( name->platformID == 3 &&
name->encodingID == 1 &&
name->languageID == 0x409 ) ||
( name->platformID == 1 &&
name->encodingID == 0 &&
name->languageID == 0 ) )
{
FT_UInt len = name->stringLength;
FT_Error error;
FT_Memory memory = face->root.memory;
FT_String* result;
if ( !ALLOC( result, len + 1 ) )
{
memcpy( result, name->string, len );
result[len] = '\0';
face->root.internal->postscript_name = result;
}
FT_UNUSED( error );
return result;
}
if ( name->platformID == 3 &&
name->encodingID == 1 &&
name->languageID == 0x409 )
found_win = n;
if ( name->platformID == 1 &&
name->encodingID == 0 &&
name->languageID == 0 )
found_apple = n;
}
}
if ( found_win )
{
FT_Memory memory = face->root.memory;
TT_NameRec* name = face->name_table.names + found_win;
FT_UInt len = name->stringLength/2;
FT_Error error;
FT_String* result;
if ( !ALLOC( result, len+1 ) )
{
FT_String* r = result;
FT_Byte* p = (FT_Byte*) name->string;
for ( ; len > 0; len--, p += 2 )
{
if ( p[0] == 0 && p[1] >= 32 && p[1] < 128 )
*r++ = p[1];
}
*r = '\0';
}
return result;
}
if ( found_apple )
{
FT_Memory memory = face->root.memory;
TT_NameRec* name = face->name_table.names + found_win;
FT_UInt len = name->stringLength;
FT_Error error;
FT_String* result;
if ( !ALLOC( result, len+1 ) )
{
MEM_Copy( result, name->string, len );
result[len] = '\0';
}
return result;
}
return NULL;
}

132
src/sfnt/sfobjs.c
View File

@ -60,70 +60,96 @@
FT_Memory memory = face->root.memory;
FT_UShort n;
TT_NameRec* rec;
FT_Bool wide_chars = 1;
FT_Bool wide_chars = 1;
FT_Int found_apple = -1;
FT_Int found_win = -1;
FT_Int found_unicode = -1;
FT_Int found;
rec = face->name_table.names;
for ( n = 0; n < face->name_table.numNameRecords; n++, rec++ )
{
if ( rec->nameID == nameid )
if ( rec->nameID == nameid && rec->string )
{
/* found the name -- now create an ASCII string from it */
FT_Bool found = 0;
/* test for Microsoft English language */
if ( rec->platformID == TT_PLATFORM_MICROSOFT &&
rec->encodingID <= TT_MS_ID_UNICODE_CS &&
( rec->languageID & 0x3FF ) == 0x009 )
found = 1;
/* test for Apple Unicode encoding */
else if ( rec->platformID == TT_PLATFORM_APPLE_UNICODE )
found = 1;
/* test for Apple Roman */
else if ( rec->platformID == TT_PLATFORM_MACINTOSH &&
rec->languageID == TT_MAC_ID_ROMAN )
switch ( rec->platformID )
{
found = 1;
wide_chars = 0;
}
/* found a Unicode name */
if ( found )
{
FT_String* string;
FT_UInt len;
if ( wide_chars )
{
FT_UInt m;
len = (FT_UInt)rec->stringLength / 2;
if ( MEM_Alloc( string, len + 1 ) )
return NULL;
for ( m = 0; m < len; m ++ )
string[m] = rec->string[2 * m + 1];
}
else
{
len = rec->stringLength;
if ( MEM_Alloc( string, len + 1 ) )
return NULL;
MEM_Copy( string, rec->string, len );
}
string[len] = '\0';
return string;
case TT_PLATFORM_APPLE_UNICODE:
{
found_unicode = n;
break;
}
case TT_PLATFORM_MACINTOSH:
{
if ( rec->languageID == TT_MAC_ID_ROMAN )
found_apple = n;
break;
}
case TT_PLATFORM_MICROSOFT:
{
if ( rec->encodingID <= TT_MS_ID_UNICODE_CS &&
(rec->languageID & 0x3FF) == 0x009 )
{
found_win = n;
}
break;
}
default:
;
}
}
}
/* some fonts contain invalid Unicode or Macintosh formatted entries */
/* we will thus favor name encoded in Windows formats when they're */
/* available.. */
/* */
found = found_win;
if ( found < 0 )
{
found = found_apple;
if ( found_apple < 0 )
found = found_unicode;
else
wide_chars = 0;
}
/* found a Unicode name */
if ( found >= 0 )
{
FT_String* string;
FT_UInt len;
rec = face->name_table.names + found;
if ( wide_chars )
{
FT_UInt m;
len = (FT_UInt)rec->stringLength / 2;
if ( MEM_Alloc( string, len + 1 ) )
return NULL;
for ( m = 0; m < len; m ++ )
string[m] = rec->string[2 * m + 1];
}
else
{
len = rec->stringLength;
if ( MEM_Alloc( string, len + 1 ) )
return NULL;
MEM_Copy( string, rec->string, len );
}
string[len] = '\0';
return string;
}
return NULL;
}

15
src/sfnt/ttload.c
View File

@ -1003,15 +1003,18 @@
for ( ; cur < limit; cur ++ )
{
FT_ULong upper;
if ( READ_Fields( name_record_fields, cur ) )
break;
/* invalid name entries will have "cur->string" set to NULL !! */
if ( (FT_ULong)(cur->stringOffset + cur->stringLength) < storageSize )
cur->string = storage + cur->stringOffset;
else
{
/* that's an invalid entry */
cur->stringOffset = 0;
cur->string = NULL;
}
}
}
@ -1020,6 +1023,12 @@
if (error)
goto Exit;
storageOffset -= 6 + 12*names->numNameRecords;
if ( FILE_Skip( storageOffset ) ||
FILE_Read( storage, storageSize ) )
goto Exit;
#ifdef FT_DEBUG_LEVEL_TRACE
/* Print Name Record Table in case of debugging */