[aisleriot] appdata: Add appdata skeleton

[Christian Persch <chpe src gnome org>]

commit 954b508790e19071f5dc852c8b80738f7095f6e8
Author: Christian Persch <chpe gnome org>
Date:   Sat Aug 16 18:44:48 2014 +0200

    appdata: Add appdata skeleton
    
    https://bugzilla.gnome.org/show_bug.cgi?id=729724

 configure.ac                  |    6 ++++++
 data/Makefile.am              |   27 ++++++++++++++++++++++-----
 data/aisleriot.appdata.xml.in |   39 +++++++++++++++++++++++++++++++++++++++
 po/POTFILES.in                |    1 +
 4 files changed, 68 insertions(+), 5 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 1e8f6e1..aaba9da 100644
--- a/configure.ac
+++ b/configure.ac
@@ -386,6 +386,12 @@ if test -z "$DESKTOP_FILE_VALIDATE"; then
   AC_MSG_ERROR([desktop-file-validate not found])
 fi
 
+AC_ARG_VAR([APPDATA_VALIDATE],[the appdata-validate programme])
+AC_PATH_PROG([APPDATA_VALIDATE],[appdata-validate],[])
+if test -z "$APPDATA_VALIDATE"; then
+  AC_MSG_ERROR([appdata-validate not found])
+fi
+
 if test "$platform_win32" = "yes" -a "$os_win32" = "yes"; then
   AC_CHECK_TOOL([WINDRES],[windres],[no])
   if test "$WINDRES" = "no"; then
diff --git a/data/Makefile.am b/data/Makefile.am
index f22ec14..a5454ea 100644
--- a/data/Makefile.am
+++ b/data/Makefile.am
@@ -20,30 +20,47 @@ desktop_in_files = \
        $(NULL)
 
 desktopdir = $(datadir)/applications
-desktop_DATA = $(desktop_in_files:.desktop.in.in=.desktop)
+nodist_desktop_DATA = $(desktop_in_files:.desktop.in.in=.desktop)
 
-desktop-file-validate: $(desktop_DATA)
+appdatadir = $(datadir)/appdata
+appdata_in_files = aisleriot.appdata.xml.in
+nodist_appdata_DATA = $(appdata_in_files:.xml.in=.xml)
+
+APPDATA_VALIDATE_FLAGS = --nonet
+appdata-validate: $(nodist_appdata_DATA)
+       for f in $^; do \
+               $(APPDATA_VALIDATE) $(APPDATA_VALIDATE_FLAGS) $$f; \
+       done
+
+desktop-file-validate: $(nodist_desktop_DATA)
        for f in $^; do \
                $(DESKTOP_FILE_VALIDATE) $$f; \
        done
 
-check-local: desktop-file-validate
 
+check-local: desktop-file-validate
 
 dist_valgrind_DATA = \
        aisleriot.supp \
        $(NULL)
 
+EXTRA_DIST = \
+       $(appdata_in_files) \
+       $(NULL)
+
 CLEANFILES = \
-       $(desktop_DATA) \
+       $(nodist_appdata_DATA) \
+       $(nodist_desktop_DATA) \
        $(pkcatalog_DATA) \
        $(NULL)
 
 DISTCLEANFILES = \
-       $(desktop_DATA) \
+       $(nodist_appdata_DATA) \
+       $(nodist_desktop_DATA) \
        $(pkcatalog_DATA) \
        $(NULL)
 
 @INTLTOOL_DESKTOP_RULE@
+ INTLTOOL_XML_RULE@
 
 -include $(top_srcdir)/git.mk
diff --git a/data/aisleriot.appdata.xml.in b/data/aisleriot.appdata.xml.in
new file mode 100644
index 0000000..5cfb735
--- /dev/null
+++ b/data/aisleriot.appdata.xml.in
@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  Copyright © 2014 Christian Persch
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 3, or (at your option)
+  any later version.
+
+  This program is distributed in the hope conf it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+-->
+<!-- FIXME: the xmlns for appdata is made-up -->
+<application
+  xmlns="https://www.freedesktop.org/standards/appdata/1.0";
+  xmlns:xi="http://www.w3.org/2001/XInclude";
+  xmlns:its="http://www.w3.org/2005/11/its";>
+  <id type="desktop">sol.desktop</id>
+  <metadata_license>GPL-3.0+</metadata_license>
+  <project_license>GPL-3.0+</project_license>
+  <_name>Aisleriot Solitaire</_name>
+  <_summary>Play many different solitaire games</_summary>
+<!--  <description>
+    <_p>blah</_p>
+    <_p>blah blah</_p>
+    <_p>blah blah blah</_p>
+  </description>
+-->
+  <screenshots>
+    <screenshot 
type="default">https://wiki.gnome.org/Apps/Aisleriot?action=AttachFile&amp;do=get&amp;target=aisleriot-3.10.png</screenshot>
+  </screenshots>
+  <url type="homepage">https://wiki.gnome.org/Apps/Aisleriot</url>
+  <project_group>GNOME</project_group>
+</application>
diff --git a/po/POTFILES.in b/po/POTFILES.in
index f3f9f90..5f4dd1e 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -1,6 +1,7 @@
 # List of source files containing translatable strings.
 # Please keep this file in alphabetical order.
 [encoding: UTF-8]
+data/aisleriot.appdata.xml.in
 data/sol.desktop.in.in
 src/aisleriot.schemas.in
 src/ar-application.c