[libgdata] build: Add Vala bindings

[Philip Withnall <pwithnall src gnome org>]

commit 2186969875520d535704f61280f62145932b4948
Author: Evan Nemerson <evan coeus-group com>
Date:   Thu Feb 21 21:53:45 2013 -0800

    build: Add Vala bindings
    
    Closes: https://bugzilla.gnome.org/show_bug.cgi?id=693865

 Makefile.am              |   27 ++++++++++++
 configure.ac             |    2 +
 gdata/GData-0.0.metadata |   11 +++++
 m4/vapigen.m4            |  101 ++++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 141 insertions(+), 0 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index 2cb013d..161dd8d 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -513,6 +513,33 @@ CLEANFILES += $(gir_DATA) $(typelib_DATA)
 
 DISTCHECK_CONFIGURE_FLAGS += --enable-introspection
 EXTRA_DIST += introspection.m4
+
+if ENABLE_VAPIGEN
+-include $(VAPIGEN_MAKEFILE)
+
+# Note: The VAPI file name has to match the pkg-config file name.
+# If we break API and add a version number to the pkg-config file name, the VAPI can be changed to match.
+# See: https://bugzilla.gnome.org/show_bug.cgi?id=693865
+gdata/libgdata.vapi: gdata/GData- GDATA_API_VERSION_MAJOR@  GDATA_API_VERSION_MINOR@.gir gdata/GData- 
GDATA_API_VERSION_MAJOR@  GDATA_API_VERSION_MINOR@.metadata
+
+VAPIGEN_VAPIS = gdata/libgdata.vapi
+
+gdata_libgdata_vapi_DEPS = libxml-2.0 libsoup-2.4
+gdata_libgdata_vapi_METADATADIRS = $(srcdir)/gdata
+gdata_libgdata_vapi_FILES = gdata/GData- GDATA_API_VERSION_MAJOR@  GDATA_API_VERSION_MINOR@.gir
+
+gdata/libgdata.deps:
+       $(AM_V_GEN) for pkg in $(libgdata_vapi_DEPS); do \
+               echo $$pkg >> $@; \
+       done
+
+vapidir = $(datadir)/vala/vapi
+vapi_DATA = $(VAPIGEN_VAPIS) $(VAPIGEN_VAPIS:.vapi=.deps)
+
+CLEANFILES += $(vapi_DATA)
+
+EXTRA_DIST += gdata/GData- GDATA_API_VERSION_MAJOR@  GDATA_API_VERSION_MINOR@.metadata
+endif
 endif
 
 # Code coverage
diff --git a/configure.ac b/configure.ac
index f66999b..681e178 100644
--- a/configure.ac
+++ b/configure.ac
@@ -143,6 +143,8 @@ GNOME_MAINTAINER_MODE_DEFINES
 
 GOBJECT_INTROSPECTION_CHECK([0.9.7])
 
+VAPIGEN_CHECK()
+
 AC_SUBST([AM_CPPFLAGS])
 AC_SUBST([AM_CFLAGS])
 AC_SUBST([AM_CXXFLAGS])
diff --git a/gdata/GData-0.0.metadata b/gdata/GData-0.0.metadata
new file mode 100644
index 0000000..2995eda
--- /dev/null
+++ b/gdata/GData-0.0.metadata
@@ -0,0 +1,11 @@
+Color struct
+
+Parsable.get_xml#method skip
+Query.get_query_uri#method skip
+DOCUMENTS_PRESENTATION_* name="DOCUMENTS_PRESENTATION_(.+)" parent="GData.DocumentsPresentationFormat"
+DOCUMENTS_TEXT_* name="DOCUMENTS_TEXT_(.+)" parent="GData.DocumentsTextFormat"
+DOCUMENTS_SPREADSHEET_* name="DOCUMENTS_SPREADSHEET_(.+)" parent="GData.DocumentsSpreadsheetFormat"
+CONTACTS_GENDER_* name="CONTACTS_GENDER_(.+)" parent="GData.ContactsGender"
+CONTACTS_GROUP_* name="CONTACTS_GROUP_(.+)" parent="GData.ContactsGroupType"
+CONTACTS_PRIORITY_* name="CONTACTS_PRIORITY_(.+)" parent="GData.ContactsPriority"
+CONTACTS_SENSITIVITY_* name="CONTACTS_SENSITIVITY_(.+)" parent="GData.ContactsSensitivity"
\ No newline at end of file
diff --git a/m4/vapigen.m4 b/m4/vapigen.m4
new file mode 100644
index 0000000..2c435e7
--- /dev/null
+++ b/m4/vapigen.m4
@@ -0,0 +1,101 @@
+dnl vapigen.m4
+dnl
+dnl Copyright 2012 Evan Nemerson
+dnl
+dnl This library is free software; you can redistribute it and/or
+dnl modify it under the terms of the GNU Lesser General Public
+dnl License as published by the Free Software Foundation; either
+dnl version 2.1 of the License, or (at your option) any later version.
+dnl
+dnl This library is distributed in the hope that it will be useful,
+dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
+dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+dnl Lesser General Public License for more details.
+dnl
+dnl You should have received a copy of the GNU Lesser General Public
+dnl License along with this library; if not, write to the Free Software
+dnl Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+
+# VAPIGEN_CHECK([VERSION], [API_VERSION], [FOUND_INTROSPECTION], [DEFAULT])
+# --------------------------------------
+# Check vapigen existence and version
+#
+# See http://live.gnome.org/Vala/UpstreamGuide for detailed documentation
+AC_DEFUN([VAPIGEN_CHECK],
+[
+  AS_IF([test "x$3" != "xyes"], [
+      m4_provide_if([GOBJECT_INTROSPECTION_CHECK], [], [
+          m4_provide_if([GOBJECT_INTROSPECTION_REQUIRE], [], [
+              AC_MSG_ERROR([[You must call GOBJECT_INTROSPECTION_CHECK or GOBJECT_INTROSPECTION_REQUIRE 
before using VAPIGEN_CHECK unless using the FOUND_INTROSPECTION argument is "yes"]])
+            ])
+        ])
+    ])
+
+  AC_ARG_ENABLE([vala],
+    [AS_HELP_STRING([--enable-vala[=@<:@no/auto/yes@:>@]],[build Vala bindings 
@<:@default=]ifelse($4,,auto,$4)[@:>@])],,[
+      AS_IF([test "x$4" = "x"], [
+          enable_vala=auto
+        ], [
+          enable_vala=$4
+        ])
+    ])
+
+  AS_CASE([$enable_vala], [no], [enable_vala=no],
+      [yes], [
+        AS_IF([test "x$3" != "xyes" -a "x$found_introspection" != "xyes"], [
+            AC_MSG_ERROR([Vala bindings require GObject Introspection])
+          ])
+      ], [auto], [
+        AS_IF([test "x$3" != "xyes" -a "x$found_introspection" != "xyes"], [
+            enable_vala=no
+          ])
+      ], [
+        AC_MSG_ERROR([Invalid argument passed to --enable-vala, should be one of @<:@no/auto/yes@:>@])
+      ])
+
+  AS_IF([test "x$2" = "x"], [
+      vapigen_pkg_name=vapigen
+    ], [
+      vapigen_pkg_name=vapigen-$2
+    ])
+  AS_IF([test "x$1" = "x"], [
+      vapigen_pkg="$vapigen_pkg_name"
+    ], [
+      vapigen_pkg="$vapigen_pkg_name >= $1"
+    ])
+
+  PKG_PROG_PKG_CONFIG
+
+  PKG_CHECK_EXISTS([$vapigen_pkg], [
+      AS_IF([test "$enable_vala" = "auto"], [
+          enable_vala=yes
+        ])
+    ], [
+      AS_CASE([$enable_vala], [yes], [
+          AC_MSG_ERROR([$vapigen_pkg not found])
+        ], [auto], [
+          enable_vala=no
+        ])
+    ])
+
+  AC_MSG_CHECKING([for vapigen])
+
+  AS_CASE([$enable_vala],
+    [yes], [
+      VAPIGEN=`$PKG_CONFIG --variable=vapigen $vapigen_pkg_name`
+      VAPIGEN_MAKEFILE=`$PKG_CONFIG --variable=datadir $vapigen_pkg_name`/vala/Makefile.vapigen
+      AS_IF([test "x$2" = "x"], [
+          VAPIGEN_VAPIDIR=`$PKG_CONFIG --variable=vapidir $vapigen_pkg_name`
+        ], [
+          VAPIGEN_VAPIDIR=`$PKG_CONFIG --variable=vapidir_versioned $vapigen_pkg_name`
+        ])
+    ])
+
+  AC_MSG_RESULT([$enable_vala])
+
+  AC_SUBST([VAPIGEN])
+  AC_SUBST([VAPIGEN_VAPIDIR])
+  AC_SUBST([VAPIGEN_MAKEFILE])
+
+  AM_CONDITIONAL(ENABLE_VAPIGEN, test "x$enable_vala" = "xyes")
+])