Generate all langpacks on Linux using gyp python list comprehensions....

Generate all langpacks on Linux using gyp python list comprehensions.
Currently only 4 langpacks out of 50 odd are being built.
This patch enables building all of them as on Windows,
and factorizes the gyp lists using python comprehensions.

BUG=14790
TEST=none

[juhp, 2009-06-20 12:20:17]

Hi my first chromium patch...

this enables building all langpacks for linux with gyp like on Windows.

Thanks, Jens

[sgk, 2009-06-21 15:15:32]

Hi Jens--

Thanks for submitting this.  We're going to need to refactor this, though.  Even
though we eval() the dicts contained in the .gyp files, so what you coded
definitely works, the .gyp files are actually JSON by definition, that is,
static data structures, with no Python list comprehensions or other Python
executable bits (e.g. '+').

I've CC'ed Mark Mentovia, who's talked about adding support for loops to the GYP
data structures, to see if that could be added reasonably quickly to support
this.  (It's clear that loops would really help this case.)

Barring an outright loop in gyp, the best idea I can come up with is to use an
external script to contain the list of language strings and to spit back lists
that would be interpolated into gyp variables, and then use rules to
pattern-match files specified in those lists in some clever way.  I haven't
thought about it enough to have a sense for how to work out the details, though.

[juhp, 2009-06-22 04:48:23]

> We're going to need to refactor this, though.  Even
> though we eval() the dicts contained in the .gyp files, so what you coded
> definitely works, the .gyp files are actually JSON by definition, that is,
> static data structures, with no Python list comprehensions or other Python
> executable bits (e.g. '+').

Ok, I see no worries.

> I've CC'ed Mark Mentovia, who's talked about adding support for loops to the
GYP
> data structures, to see if that could be added reasonably quickly to support
> this.

Ok cool thanks.

> Barring an outright loop in gyp, the best idea I can come up with is to use an
> external script to contain the list of language strings and to spit back lists
> that would be interpolated into gyp variables, and then use rules to
> pattern-match files specified in those lists in some clever way.

Yeah or maybe use some form of chrome.gyp.in template to generate a static
chrome.gyp.

[Michael Moss, 2009-07-15 17:49:00]

> Barring an outright loop in gyp, the best idea I can come up with is to use an
> external script to contain the list of language strings and to spit back lists
> that would be interpolated into gyp variables, and then use rules to
> pattern-match files specified in those lists in some clever way.  I haven't
> thought about it enough to have a sense for how to work out the details,
though.

FYI, I've implemented almost exactly what sgk describes here. I hope to send a
CL today.