[geary] Make appdata file translatable. Bug 713937.

[Michael Gratton <mjog src gnome org>]

commit 96ea69df19b2143f5bb070dfdf3222ffe93cd0e3
Author: Michael James Gratton <mike vee net>
Date:   Mon Sep 5 12:09:54 2016 +1000

    Make appdata file translatable. Bug 713937.
    
    * desktop/CMakeLists.txt: Translate the appdata file rather than just
      installing it directly.
    
    * desktop/geary.appdata.xml.in: Rename from 'geary.appdata.xml', make
      name, summary and description translatable.
    
    * cmake/FindIntltool.cmake: Add a CMake command for the appdata file.
    
    * po/POTFILES.in: Include geary.appdata.xml.in.

 cmake/FindIntltool.cmake                           |    7 +++++
 desktop/CMakeLists.txt                             |    5 +--
 .../{geary.appdata.xml => geary.appdata.xml.in}    |   26 ++++++++++----------
 po/POTFILES.in                                     |    1 +
 4 files changed, 23 insertions(+), 16 deletions(-)
---
diff --git a/cmake/FindIntltool.cmake b/cmake/FindIntltool.cmake
index 44c3c92..b35279d 100644
--- a/cmake/FindIntltool.cmake
+++ b/cmake/FindIntltool.cmake
@@ -12,6 +12,13 @@ else (INTLTOOL_MERGE_EXECUTABLE)
 endif (INTLTOOL_MERGE_EXECUTABLE)
 
 if (INTLTOOL_MERGE_FOUND)
+    macro (INTLTOOL_MERGE_APPDATA appstream_name po_dir)
+        add_custom_target (${appstream_name}.in ALL
+            ${INTLTOOL_MERGE_EXECUTABLE} --xml-style ${CMAKE_SOURCE_DIR}/${po_dir}
+                ${CMAKE_CURRENT_SOURCE_DIR}/${appstream_name}.in ${appstream_name}
+        )
+        install (FILES ${CMAKE_CURRENT_BINARY_DIR}/{$appstream_name} DESTINATION 
${CMAKE_INSTALL_PREFIX}/share/appdata)
+    endmacro (INTLTOOL_MERGE_DESKTOP appstream_name po_dir)
     macro (INTLTOOL_MERGE_DESKTOP desktop_id po_dir)
         add_custom_target (geary.desktop ALL
             ${INTLTOOL_MERGE_EXECUTABLE} --desktop-style ${CMAKE_SOURCE_DIR}/${po_dir}
diff --git a/desktop/CMakeLists.txt b/desktop/CMakeLists.txt
index f61e912..9776df8 100644
--- a/desktop/CMakeLists.txt
+++ b/desktop/CMakeLists.txt
@@ -2,14 +2,13 @@
 # Build and install geary.desktop
 #
 
-install(FILES geary.appdata.xml DESTINATION share/appdata)
-
 include (FindIntltool)
 include (FindDesktopFileValidate)
 if (INTLTOOL_MERGE_FOUND)
+    INTLTOOL_MERGE_APPDATA (geary.appdata.xml po)
     INTLTOOL_MERGE_DESKTOP (geary.desktop po)
     INTLTOOL_MERGE_AUTOSTART_DESKTOP (geary-autostart.desktop po)
-    
+
     if (DESKTOP_VALIDATE)
         if (DESKTOP_FILE_VALIDATE_FOUND)
             VALIDATE_DESKTOP_FILE (geary.desktop)
diff --git a/desktop/geary.appdata.xml b/desktop/geary.appdata.xml.in
similarity index 73%
rename from desktop/geary.appdata.xml
rename to desktop/geary.appdata.xml.in
index d833eeb..a9f7e10 100644
--- a/desktop/geary.appdata.xml
+++ b/desktop/geary.appdata.xml.in
@@ -5,26 +5,26 @@
   <id>geary.desktop</id>
   <metadata_license>CC0-1.0</metadata_license>
   <project_license>LGPL-2.1+</project_license>
-  <name>Geary</name>
-  <summary>Send and receive email</summary>
+  <_name>Geary</_name>
+  <_summary>Send and receive email</_summary>
   <description>
-    <p>
+    <_p>
       Geary is an email application built around conversations, for
       the GNOME 3 desktop. It allows you to read, find and send email
       with a straightforward, modern interface.
-    </p>
-    <p>
+    </_p>
+    <_p>
       Conversations allow you to read a complete discussion without
       having to find and click from message to message.
-    </p>
-    <p>Geary's features include:</p>
+    </_p>
+    <_p>Geary's features include:</_p>
     <ul>
-      <li>Quick email account setup</li>
-      <li>Shows related messages together in conversations</li>
-      <li>Fast, full text and keyword search</li>
-      <li>Full-featured HTML and plain text message composer</li>
-      <li>Desktop notification of new mail</li>
-      <li>Compatible with GMail, Yahoo! Mail, Outlook.com and other IMAP servers</li>
+      <_li>Quick email account setup</_li>
+      <_li>Shows related messages together in conversations</_li>
+      <_li>Fast, full text and keyword search</_li>
+      <_li>Full-featured HTML and plain text message composer</_li>
+      <_li>Desktop notification of new mail</_li>
+      <_li>Compatible with GMail, Yahoo! Mail, Outlook.com and other IMAP servers</_li>
     </ul>
   </description>
   <url type="homepage">https://wiki.gnome.org/Apps/Geary</url>
diff --git a/po/POTFILES.in b/po/POTFILES.in
index d74839a..edca1ae 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -1,4 +1,5 @@
 [encoding: UTF-8]
+desktop/geary.appdata.xml.in
 desktop/geary.desktop.in
 desktop/geary-autostart.desktop.in
 [type: gettext/ini]desktop/geary-attach.contract.in