https://github.com/xitrum-framework/scaposer

GNU Gettext .po file loader for Scala
https://github.com/xitrum-framework/scaposer

Last synced: 25 days ago
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GNU Gettext .po file loader for Scala

• Host: GitHub
• URL: https://github.com/xitrum-framework/scaposer
• Owner: xitrum-framework
• License: mit
• Created: 2011-09-09T01:02:13.000Z (over 13 years ago)
• Default Branch: master
• Last Pushed: 2023-12-18T18:08:10.000Z (12 months ago)
• Last Synced: 2024-08-04T00:06:07.294Z (4 months ago)
• Language: Scala
• Homepage: http://www.slideshare.net/ngocdaothanh/i18nize-scala-program-a-la-gettext
• Size: 3.17 MB
• Stars: 38
• Watchers: 9
• Forks: 6
• Open Issues: 4
• Metadata Files:
  • Readme: README.rst
  • Changelog: CHANGELOG
  • License: MIT-LICENSE
  • Authors: AUTHORS

Awesome Lists containing this project

• awesome-scala - scaposer - framework/scaposer)  (Table of Contents / i18n)

README

        
.. image:: poedit.png

Scaposer is a GNU gettext po file parser written in Scala.

It's strange that there's not many JVM libraries of this kind, see the

`discussion on Stackoverflow `_.

To extract i18n strings from Scala source code files, use

`Scala xgettext `_.

Presentation:

`I18nize Scala programs à la gettext `_

Discussion group: https://groups.google.com/group/scala-xgettext

Basic usage

-----------

See `Scaladoc `_.

::

  val po = """

  msgid "Hello"

  msgstr "Bonjour"

  """

  val result = scaposer.Parser.parse(po)

  // => An Either,

  // Left(scaposer.ParseFailure) or

  // Right(Seq[scaposer.Translation])

Use ``t`` methods to get the translations:

::

  val translations = result.right.get

  val i18n         = scaposer.I18n(translations)

  i18n.t("Hello")  // => "Bonjour"

If there's no translation, or the translation is an empty string

(not translated yet), the original input is returned:

::

  i18n.t("Hi")  // => "Hi"

Context

-------

::

  val po = """

  msgid "Hello"

  msgstr "Bonjour"

  msgctxt "Casual"

  msgid "Hello"

  msgstr "Salut"

  """

  val translations = scaposer.Parser.parse(po).right.get

  val i18n         = scaposer.I18n(translations)

  i18n.tc("Casual", "Hello")  // => "Salut"

If there's no translation for the context, the translation without context is tried:

::

  i18n.tc("Missing context", "Hello")  // => "Bonjour"

Plural-Forms

------------

::

  val po = """

  msgid ""

  msgstr "Plural-Forms: nplurals=2; plural=n>1;"

  msgid "I have one apple"

  msgid_plural "I have %d apples"

  msgstr[0] "J'ai une pomme"

  msgstr[1] "J'ai %d pommes"

  """

  val translations = scaposer.Parser.parse(po).right.get

  val i18n         = scaposer.I18n(translations)

  i18n.tn("I have one apple", "I have %d apples", 1)                // => "J'ai une pomme"

  i18n.tn("I have one apple", "I have %d apples", 2)                // => "J'ai %d pommes"

  i18n.tcn("A context", "I have one apple", "I have %d apples", 3)  // => "J'ai %d pommes"

For performance, your po file should define ``Plural-Forms`` exactly as at:

* http://www.gnu.org/software/gettext/manual/html_node/Plural-forms.html#Plural-forms

* http://www.gnu.org/software/gettext/manual/html_node/Translating-plural-forms.html#Translating-plural-forms

Otherwise, Scaposer cannot compare the plural form string, and it needs to parse and evaluate (slower).

Merge Po objects

----------------

You can merge multiple ``I18n``s together.

::

  val i18n4 = i18n1 ++ i18n2 ++ i18n3

Just like when you merge maps, translations in i18n3 will overwrite those in

i18n2 will overwrite those in i18n1.

Use with SBT

------------

Supported Scala versions: 2.11-2.13

build.sbt example:

::

  libraryDependencies += "tv.cntt" %% "scaposer" % "1.11.1"

Scaposer is used in `Xitrum web framework `_.