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2a2c704285
This should avoid confusion by the previous keeping by adding a clear way to remove obsolete strings. Fixes #20049
182 lines
5.9 KiB
ReStructuredText
Vendored
182 lines
5.9 KiB
ReStructuredText
Vendored
.. _gettext:
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GNU gettext PO (Portable Object)
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--------------------------------
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.. index::
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pair: gettext; file format
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pair: PO; file format
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Most widely used format for translating libre software.
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Contextual info stored in the file is supported by adjusting its
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headers or linking to corresponding source files.
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.. seealso::
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* :doc:`../devel/gettext`
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* :doc:`../devel/sphinx`
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* `Gettext on Wikipedia <https://en.wikipedia.org/wiki/Gettext>`_
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* :doc:`tt:formats/po`
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* :ref:`addon-weblate.gettext.authors`
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* :ref:`addon-weblate.gettext.configure`
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* :ref:`addon-weblate.gettext.customize`
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* :ref:`addon-weblate.gettext.linguas`
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* :ref:`addon-weblate.gettext.mo`
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* :ref:`addon-weblate.gettext.msgmerge`
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Showing source string change
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++++++++++++++++++++++++++++
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Weblate can extract previous source strings from the PO files if present and
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show the string difference for strings needing editing based on that. To
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include these, :program:`msgmerge` has to be executed with ``--previous`` and
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the resulting PO file then contains lines such as:
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.. code-block:: po
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#, fuzzy
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#| msgid "previous-untranslated-string"
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msgid "untranslated-string"
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msgstr "translated-string"
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This is controlled by the ``po_keep_previous`` :ref:`file_format_params`
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parameter. It does not affect obsolete entries marked with ``#~``.
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Obsolete strings
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++++++++++++++++
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:program:`msgmerge` keeps strings removed from the POT file as obsolete ``#~``
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entries by default. Enable the ``po_remove_obsolete`` :ref:`file_format_params`
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parameter to remove obsolete entries when Weblate saves PO files.
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PO file header
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++++++++++++++
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The header of the PO file is automatically maintained by Weblate.
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It can be configured to include the ``Language-Team``, ``Last-Translator``,
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``X-Generator`` and ``Report-Msgid-Bugs-To`` headers using the :ref:`file_format_params`.
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The header comments also can be updated to contain author names using :ref:`addon-weblate.gettext.authors`.
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Line wrapping
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+++++++++++++
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The line wrapping mostly matches GNU gettext behavior. Both the wrapping
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algorithm in the GNU gettext and the Unicode data the wrapping is based on
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evolve which might cause differences in some corner cases.
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The wrapping width can be configured using the ``po_line_wrap`` parameter, see :ref:`file_format_params`.
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Generating matching MO files
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++++++++++++++++++++++++++++
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In case MO files are kept in the repository together with PO files,
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:ref:`addon-weblate.gettext.mo` can be used to keep them up-to-date with PO
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files.
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Updating PO files from the POT file
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+++++++++++++++++++++++++++++++++++
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:ref:`addon-weblate.gettext.msgmerge` can be used to update PO files from the
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POT file, see :ref:`updating-target-files`.
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.. _mono_gettext:
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Monolingual gettext
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+++++++++++++++++++
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Some projects decide to use gettext as monolingual formats—they code just the IDs
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in their source code and the string then needs to be translated to all languages,
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including English. This is supported, though you have to choose
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this file format explicitly when importing components into Weblate.
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Example files
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+++++++++++++
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The bilingual gettext PO file typically looks like this:
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.. code-block:: po
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#: weblate/media/js/bootstrap-datepicker.js:1421
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msgid "Monday"
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msgstr "Pondělí"
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#: weblate/media/js/bootstrap-datepicker.js:1421
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msgid "Tuesday"
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msgstr "Úterý"
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#: weblate/accounts/avatar.py:163
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msgctxt "No known user"
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msgid "None"
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msgstr "Žádný"
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The monolingual gettext PO file typically looks like this:
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.. code-block:: po
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#: weblate/media/js/bootstrap-datepicker.js:1421
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msgid "day-monday"
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msgstr "Pondělí"
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#: weblate/media/js/bootstrap-datepicker.js:1421
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msgid "day-tuesday"
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msgstr "Úterý"
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#: weblate/accounts/avatar.py:163
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msgid "none-user"
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msgstr "Žádný"
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While the base language file will be:
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.. code-block:: po
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#: weblate/media/js/bootstrap-datepicker.js:1421
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msgid "day-monday"
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msgstr "Monday"
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#: weblate/media/js/bootstrap-datepicker.js:1421
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msgid "day-tuesday"
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msgstr "Tuesday"
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#: weblate/accounts/avatar.py:163
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msgid "none-user"
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msgstr "None"
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.. include:: /snippets/format-features/po-mono-features.rst
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.. include:: /snippets/format-features/po-features.rst
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Weblate configuration
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+++++++++++++++++++++
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+-------------------------------------------------------------------+
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| Typical Weblate :ref:`component` for bilingual gettext |
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+================================+==================================+
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| File mask | ``po/*.po`` |
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+--------------------------------+----------------------------------+
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| Monolingual base language file | `Empty` |
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+--------------------------------+----------------------------------+
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| Template for new translations | ``po/messages.pot`` |
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+--------------------------------+----------------------------------+
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| File format | `Gettext PO file` |
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+--------------------------------+----------------------------------+
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+-------------------------------------------------------------------+
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| Typical Weblate :ref:`component` for monolingual gettext |
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+================================+==================================+
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| File mask | ``po/*.po`` |
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+--------------------------------+----------------------------------+
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| Monolingual base language file | ``po/en.po`` |
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+--------------------------------+----------------------------------+
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| Template for new translations | ``po/messages.pot`` |
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+--------------------------------+----------------------------------+
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| File format | `Gettext PO file (monolingual)` |
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+--------------------------------+----------------------------------+
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File format parameters
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++++++++++++++++++++++
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:ref:`file_format_params` with the pattern `po_*` can be used to configure the behavior of the gettext format.
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