[Git][freetype/freetype][master] * src/cff/cffobjs.c (cff_face_init): Better handling of Type0 fonts.

[Werner Lemberg (@wl)]

Werner Lemberg pushed to branch master at FreeType / FreeType

Commits:

• 3f3e3de3
  by Honnesh Ramachandra at 2024-11-06T06:28:41+01:00

  * src/cff/cffobjs.c (cff_face_init): Better handling of Type0 fonts.
  
  This issue relates to the PDF specification and its usage of CFF-based
  embedded Type0 fonts.  For Type0 fonts containing CID-keyed descendant
  CFF-based fonts, the glyph index is the CID present in the content stream.
  As a result, there is no requirement for a 'cmap' table to be present in the
  font since the glyph indices are derived directly from the CIDs.  FreeType
  throws an error when it doesn’t find a 'cmap' table for such an Open Type
  font containing CFF outlines.  This commit relaxes this requirement for a
  'cmap' table for such fonts.
  

1 changed file:

• src/cff/cffobjs.c

Changes:

src/cff/cffobjs.c

---

...	...	@@ -550,13 +550,13 @@
550	550	if ( error )
551	551	goto Exit;
552	552	}
553		- else
554		- {
555		- /* load the `cmap' table explicitly */
556		- error = sfnt->load_cmap( face, stream );
557		- if ( error )
558		- goto Exit;
559		- }
	553	+
	554	+ /* load the `cmap' table explicitly */
	555	+ error = sfnt->load_cmap( face, stream );
	556	+
	557	+ /* this may fail because CID-keyed fonts don't have a cmap */
	558	+ if ( FT_ERR_NEQ( error, Table_Missing ) && FT_ERR_NEQ( error, Ok ) )
	559	+ goto Exit;
560	560
561	561	/* now load the CFF part of the file; */
562	562	/* give priority to CFF2 */

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