Internationalising Confluence plugins

Text in Confluence plugins can be internationalised to cater for a variety of locales or languages. To do this, you will need to create a translated copy of the properties file(s) for each plugin and bundle these inside your language pack plugin. Having a properties file in each plugin allows plugin authors to provide internationalised plugins without having to add their i18n keys to Confluence's core source.

Confluence comes bundled with a few plugins that are stored in a file called atlassian-bundled-plugins.zip. The basic process for translating a plugin is:

Extract this zip to a directory
Extract the plugin JAR
Locate the properties file which contains i18n keys (examples are below)
Copy this file to the same location in your plugin. For example, if it is in path/to/file.properties, it needs to be in the same place in your language pack JAR with a locale extension: path/to/file_jp_JP.properties
Repeat this for all plugins that can be internationalised

Below is a list of bundled plugins that can be internationalised and the properties file you will need to translate (correct as of Confluence 2.7):

Plugin Name	Filename
Usage Statistics Plugin	usage-tracking-plugin-<version>.jar I18N Resources: resources/stats/usage.properties
Atlassian Plugin Repository	atlassian-plugin-repository-confluence-plugin-<version>.jar I18N Resources: resources/i18n/repository-templates.properties
	I18N Resources: resources/i18n/repository-macros.properties
Clickr Theme	clickr-theme-plugin-<version>.jar I18N Resources: clickr.properties
Mail Page Plugin	mail-page-plugin-<version>.jar I18N Resources: resources/mailpage.properties
Social Bookmarking Plugin	socialbookmarking-<version>.jar I18N Resources: com/atlassian/confluence/plugins/socialbookmarking/i18n.properties
WebDAV Plugin	webdav-plugin-<version>.jar I18N Resources: com/atlassian/confluence/extra/webdav/text.properties
Charting Plugin	chart-plugin-<version>.jar I18N Resources: chart.properties
TinyMCE (Rich Text) Editor	atlassian-tinymce-plugin-<version>.jar I18N Resources: com/atlassian/confluence/extra/tinymceplugin/tinymce.properties
Advanced Macros	confluence-advanced-macros-<version>.jar I18N Resources: resources/com/atlassian/confluence/plugins/macros/advanced/i18n.properties
Dashboard Macros	confluence-dashboard-macros-<version>.jar I18N Resources: resources/com/atlassian/confluence/plugins/macros/dashboard/i18n.properties

Below are the system plugins (found in confluence/WEB-INF/lib/) that can be internationalised and the properties file you will need to translate:

Plugin Name	Filename
Information Plugin	confluence-information-plugin-<version>.jar I18N Resources: information.properties
Layout Plugin	confluence-layout-plugin-<version>.jar I18N Resources: layout.properties
Livesearch Plugin	confluence-livesearch-plugin-<version>.jar I18N Resources: livesearch.properties
Dynamic Tasklist Plugin	confluence-dynamictasklist-plugin-<version>.jar I18N Resources: dynamictasklist.properties