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Bug 455

Summary: SDL_iconv_string fails on Ubuntu locale...
Product: SDL Reporter: Ryan C. Gordon <icculus>
Component: *don't know*Assignee: Sam Lantinga <slouken>
Status: RESOLVED FIXED QA Contact: Sam Lantinga <slouken>
Severity: normal    
Priority: P1    
Version: 1.2.11   
Hardware: x86   
OS: Linux   
Attachments: Proposed fix.

Description Ryan C. Gordon 2007-07-12 00:03:37 UTC 
On this Ubuntu system, src/stdlib/SDL_iconv.c's SDL_iconv_string() returns -1, because the LANG environment that getlocale() finds is set to "en_US.UTF-8", which apparently it doesn't like.

This cascades down, causing SDL_WM_SetCaption() to fail. Was this separate from what caused Bug #447?

The full version of the LANG environment variable can look like this:

   fr_CA.utf8@blah

(that's language_REGION.encoding@extrainfo ... UTF-8 French Canadian, in this case.)

Any section of that can apparently be missing. Lots of systems only set "fr" or "fr_CA" or whatnot.

I'm not sure what the "@blah" part is for and I've never seen it set in the wild. UTF-8 can be "UTF-8" or "utf8", apparently.

So I guess we'd have to look for '.' and '@' in LANG and trim out the parts we don't need if they exist, and maybe convert "utf8" to "UTF-8" if iconv doesn't handle it.

--ryan.
Comment 1 Ryan C. Gordon 2007-07-12 00:03:55 UTC 
Flagging as P1 for the 1.2.12 release, since this basically breaks SDL_WM_SetCaption() on every modern Linux box.  :/

--ryan.
Comment 2 Ryan C. Gordon 2007-07-12 00:18:47 UTC 
Created attachment 224 [details]
Proposed fix.


Here's a shot at fixing this. I'm not sure if this is the right approach, or covers all reasonable strings, but it works here.

--ryan.
Comment 3 Ryan C. Gordon 2007-07-12 00:19:14 UTC 
Tossing to Sam. Please apply that patch if you think it's reasonable.

--ryan.
Comment 4 Sam Lantinga 2007-07-12 00:21:39 UTC 
I have another idea.  Apparently passing "" to iconv_open indicates the locale dependent encoding.  I'll play with this a bit.
Comment 5 Sam Lantinga 2007-07-12 00:29:55 UTC 
This is fixed in revision 3234, thanks!
Comment 6 Sam Lantinga 2007-07-12 01:08:34 UTC 
I applied your patch to the built-in version of iconv_open().  Thanks!
Comment 7 Sam Lantinga 2007-07-12 01:09:45 UTC 
BTW, the semantics of strstr are really dangerous.  As you can see by the bug in your patch... :)
But I guess it's the best you can do without being able to have both const and non-const versions of a function.
Comment 8 Sam Lantinga 2007-07-12 01:10:32 UTC 
Semantics of strchr even. :)