[Android] Calculate revision in gradle and store it in app

[Geoffrey Métais]

vlc-ports/android | branch: master | Geoffrey Métais <geoffrey.metais at gmail.com> | Tue Feb 10 14:46:39 2015 +0100| [cf1db7584f3d5c52ac1f971f7a985a4255deb950] | committer: Geoffrey Métais

Calculate revision in gradle and store it in app

> http://git.videolan.org/gitweb.cgi/vlc-ports/android.git/?a=commit;h=cf1db7584f3d5c52ac1f971f7a985a4255deb950
---

 vlc-android/build.gradle |   10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/vlc-android/build.gradle b/vlc-android/build.gradle
index eca896b..ceb4c3e 100644
--- a/vlc-android/build.gradle
+++ b/vlc-android/build.gradle
@@ -18,6 +18,7 @@ android {
 
         resValue "string", "build_time", buildTime()
         resValue "string", "build_host", hostName()
+        resValue "string", "build_revision", revision()
 
         //Set the build ABI according to build types
         tasks.whenTaskAdded { task ->
@@ -183,4 +184,13 @@ def buildTime() {
 
 def hostName() {
     return System.getProperty("user.name") + "@" + InetAddress.localHost.hostName
+}
+
+def revision() {
+    def code = new ByteArrayOutputStream()
+    exec {
+        commandLine 'git', 'rev-parse', '--short', 'HEAD'
+        standardOutput = code
+    }
+    return code.toString()
 }
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