Hi Laurent,
The problem is in the self.eof_packet? method of protocol.rb.
The statement that causes the problem is:
data[0] == ?\xfe && data.length == 5
When run under macruby this is what happens:
Encoding of data[0] is ASCII-8BIT. Encoding of ?\xfe
is UTF-8
The compare fails in macruby but in MRI it succeeds (because in MRI the
encoding of ?\xfe is ascii - actually it's US_ASCII, but that seems to compare
equal)
If I use force_encoding UTF-8 then things work OK - as far as I've tested.
Steve
Begin forwarded message:
> From: Laurent Sansonetti <[email protected]>
> Subject: Re: [MacRuby-devel] macruby produces strings with encodings that
> differ from MRI
> Date: 18 September 2011 10:00:13 GMT+01:00
> To: "MacRuby development discussions." <[email protected]>
> Reply-To: "MacRuby development discussions."
> <[email protected]>
>
> Hi Steve,
>
> It would be nice to know what exactly in ruby-mysql causes the
> problem. If you can reduce the problem to a simple code snippet or
> point us to the ruby-mysql source code it would be great.
>
> Thanks
> Laurent
>
> On Sun, Sep 18, 2011 at 8:38 AM, Steve Clarke <[email protected]> wrote:
>> Yes, looks like the same issue as ticket 742. I did look at tickets but
>> failed to spot that.
>>
>> The comment on the ticket re only UTF-8 being required may be true - it
>> certainly is for me. Sadly the ruby-mysql gem works in such a way that the
>> difference between MRI and macruby breaks it.
>>
>> Steve
>>
>> On 18 Sep 2011, at 06:07, Watson wrote:
>>
>>> Hi,
>>>
>>> Maybe related to http://www.macruby.org/trac/ticket/742.
>>> MacRuby ignore magic-comment, and uses default encoding UTF8.
>>>
>>> Thanks.
>>>
>>> 2011/9/18 Steve Clarke <[email protected]>:
>>>> Code
>>>> ========
>>>>
>>>> ABC='ABC'
>>>> puts "ABC[0] encoding is #{ABC[0].encoding}"
>>>> puts "?\\xff encoding is #{?\xff.encoding}"
>>>>
>>>>
>>>> Output
>>>> ========
>>>>
>>>>
>>>> MRI output
>>>>
>>>> ABC[0] encoding is US-ASCII
>>>> ?\xff encoding is ASCII-8BIT
>>>>
>>>>
>>>>
>>>> macruby output
>>>>
>>>> ABC[0] encoding is UTF-8
>>>> ?\xff encoding is UTF-8
>>>>
>>>>
>>>> The encodings reported above did not seem to be effected by the encoding
>>>> of the source file. I tried both ASCII and UTF-8.
>>>>
>>>> When the same code is executed in (mac)irb the results are the same for
>>>> macirb as they are for macruby.
>>>> irb for MRI however produces UTF-8 strings in both cases! This seemed very
>>>> odd but I'm fairly sure it's because I have an environment variable:
>>>> LANG=GB.UTF-8
>>>> When I changed to LANG=GB.US_ASCII irb for MRI rendered 'abc'[0] with
>>>> US_ASCII encoding. macirb still used UTF-8.
>>>>
>>>> (I discovered this when trying to get ruby-mysql to work with macruby. It
>>>> doesn't work as-is but seems to work with a few mods that use
>>>> force_encoding to make MRI and macruby produce the same outputs).
>>>> I abandoned my earlier attempts to use postgres with macruby via the pg
>>>> gem. It failed regularly but in unpredictable ways associated, as far as
>>>> I could tell, with memory management problems.
>>>>
>>>>
>>>> _______________________________________________
>>>> MacRuby-devel mailing list
>>>> [email protected]
>>>> http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel
>>>>
>>> _______________________________________________
>>> MacRuby-devel mailing list
>>> [email protected]
>>> http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel
>>
>> _______________________________________________
>> MacRuby-devel mailing list
>> [email protected]
>> http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel
>>
> _______________________________________________
> MacRuby-devel mailing list
> [email protected]
> http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel
_______________________________________________
MacRuby-devel mailing list
[email protected]
http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel
