Filesystem structure of a Horde application

This information is valid for Horde 4 and later only. See Doc/Dev/FilesystemH3 for Horde 3.

Each Horde application has a common filesystem structure. This helps organizing the several components of the application and simplifies working with unknown applications.

These are the directories available in every Horde application:
+-------------------------+----------------------------------------------------------------+
|Directory                |Content                                                         |
+=========================+================================================================+
|/                        |Base directory with the controller scripts called by the browser|
+-------------------------+----------------------------------------------------------------+
|app/                     |Views and controllers for MVC style apps                        |
+-------------------------+----------------------------------------------------------------+
|bin/                     |Binary and other standalone CLI scripts                         |
+-------------------------+----------------------------------------------------------------+
|config/                  |Configuration files                                             |
+-------------------------+----------------------------------------------------------------+
|docs/                    |Administrator documentation                                     |
+-------------------------+----------------------------------------------------------------+
|js/                      |Javascript files                                                |
+-------------------------+----------------------------------------------------------------+
|lib/                     |Application-specific library files                              |
+-------------------------+----------------------------------------------------------------+
|locale/                  |Original and compiled translations; application help files      |
+-------------------------+----------------------------------------------------------------+
|migration/               |Setup and migration files                                       |
+-------------------------+----------------------------------------------------------------+
|templates/               |Template files                                                  |
+-------------------------+----------------------------------------------------------------+
|themes/                  |Themes directories                                              |
+-------------------------+----------------------------------------------------------------+
|themes/default/          |Base theme                                                      |
+-------------------------+----------------------------------------------------------------+
|themes/defaults/graphics/|Base theme icons                                                |
+-------------------------+----------------------------------------------------------------+


Usually there are more directories, depending on the application:


    If there are many controller scripts for an application, they may be grouped into directories under the base directory.
    The lib/ directory has many levels of subdirectories. See Doc/Dev/Framework for details.
    The locale/ directory has a subdirectory for each locale, e.g. locale/de/ or locale/zh_TW/ if locale has multiple regions. These subdirectories contain the translated help file help.xml and the directory LC_MESSAGES/ which contains the actual, compiled translation, e.g. imp.mo and original source file, e.g. imp.po.
    The templates/ directory groups all templates for a single controller script into one subdirectory. All templates for a script called list.php are inside templates/list/ for example.
    Each theme has a subdirectory, e.g. themes/bluewhite/; if a theme provides its own icon set, the icons are inside a graphics/ subdirectory, e.g. themes/bluewhite/graphics/.
    Some applications have sub-sets of their icons grouped into subdirectories, e.g. themes/graphics/flags/.