Bug 690611

Summary: TrueType fonts with malformed name tables aren't handled properly
Product: Ghostscript Reporter: Marcos H. Woehrmann <marcos.woehrmann>
Component: TextAssignee: Default assignee <ghostpdl-bugs>
Status: NOTIFIED FIXED    
Severity: normal    
Priority: P4    
Version: master   
Hardware: Macintosh   
OS: MacOS X   
Customer: 0 Word Size: ---
Attachments: patch

Description Marcos H. Woehrmann 2009-07-08 14:23:03 UTC 
I haven't had time to test this, but the customer reports:

I've run into a number of TrueType fonts that have slightly malformed 'name'
tables (as is typical for Microsoft file formats, the TT format is unclear
in a lot of areas about what is actually required) that Ghostscript doesn't
handle properly.  Specifically, these fonts have a 'name' table with
platform ID 0 strings that are all empty, but with correct strings for other
platform IDs.  Because of this, Ghostscript uses an empty string for the
font name when loading these fonts, which is wrong: I think Ghostscript
should clearly look for a non-empty string.

I think the right place to fix this is in the findname procedure in
Resource/Init/gs_ttf.ps, since findname is used for locating the font name
by both .findttfontname and .ttkeys.  If I weren't running around getting
ready to leave town for a month on Sunday, I'd send a fix, but I just don't
have time right now, so please pass this along to the appropriate engineer.
I've attached an example font with this problem.
Comment 1 Marcos H. Woehrmann 2009-07-08 14:24:12 UTC 
Created attachment 5197 [details]
NOVEE___.TTF
Comment 2 Alex Cherepanov 2009-07-08 22:33:23 UTC 
Created attachment 5198 [details]
patch

Don't take empty string for an answer when searching 'name' table in TrueType
font because some MS fonts have empty strings for platform IDs MS doesn't
use.
Comment 3 Alex Cherepanov 2009-07-09 06:11:03 UTC 
The patch is committed as a rev. 9853.
Regression testing shows no differences.
Comment 4 Marcos H. Woehrmann 2011-09-18 21:46:50 UTC 
Changing customer bugs that have been resolved more than a year ago to closed.