[Bug 1181183] Re: Add support for the Ubuntu SDK apps to dh_translations

[Martin Pitt]

Olivier Tilloy [2013-05-17 14:54 -0000]:
> The Ubuntu Touch QtCreator plugin exposes a "Translations" tool that has two options:
>  1) Export ".pot" File
>  2) Generate ".mo" File
> 
> The first option invokes xgettext with the following arguments:
> 
>     xgettext -o messages.pot --qt --c++ --add-comments=TRANSLATORS
> --keyword=tr %PROJECTFILES%

Is this "translation tool" implemented in the build system, or is that
separate logic in the GUI only?

Is this invoked automatically anyway? I. e. is the issue here that
dh_translations overwrites an already correct .pot file with an
incomplete one, and we just need to disable dh_translations for Ubuntu
SDK packages? Or is the point of this bug to replace the GUI tool's
export function with dh_translations?

We can certainly call above xgettext command in dh_translations if we
detect a project where this command is suitable. Do you have some
guidance how to do this detection?

> The alternative, if I understand it correctly, would be to add a
> "$domain.pot" target to the make rules (need to investigate how to do
> that with cmake). Is that correct?

That would also work, yes. It depends a little bit how much you want
these to work in a non-Debian(ish) environment, i. e. whether you have
some notion of a non-packaged "upstream" release of these projects.

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https://bugs.launchpad.net/bugs/1181183

Title:
  Add support for the Ubuntu SDK apps to dh_translations

Status in “pkgbinarymangler” package in Ubuntu:
  Incomplete

Bug description:
  dh_translations, when it builds a POT file from the source files, invokes intltool-update, which in turn invokes xgettext to extract the translatable strings from the source files.
  By default, xgettext looks for a set of predefined keywords to identify translatable strings.
  This set of predefined keywords doesn’t include "i18n.tr", which is the function used in QML files that use the Ubuntu SDK.
  As a result, no strings are found, and no POT file is generated.

  Ideally, dh_translations should support passing (arbitrary?) extra
  options to intltool-update/xgettext. Or at least extend the default
  list of keywords to support the apps written with the Ubuntu SDK.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: dh-translations 117
  ProcVersionSignature: Ubuntu 3.8.0-21.32-generic 3.8.8
  Uname: Linux 3.8.0-21-generic x86_64
  NonfreeKernelModules: nvidia wl
  ApportVersion: 2.9.2-0ubuntu8
  Architecture: amd64
  CheckboxSubmission: 2c7995ffdf051a6d0adf7ab2c7be5ba9
  CheckboxSystem: 7e42599bda39ea7ff8b528272b6ef52b
  Date: Fri May 17 12:27:40 2013
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2013-03-26 (51 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Alpha amd64+mac (20130326)
  MarkForUpload: True
  PackageArchitecture: all
  SourcePackage: pkgbinarymangler
  UpgradeStatus: No upgrade log present (probably fresh install)

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