[gnome-builder/wip/tingping/jhbuild-runtime] jhbuild: Add JHBuild implementation of IdeRuntime

[Patrick Griffis <pgriffis src gnome org>]

commit 456b041c4bf9ecadd67886173d915ed46be3a702
Author: Patrick Griffis <tingping tingping se>
Date:   Wed Feb 17 17:41:27 2016 -0500

    jhbuild: Add JHBuild implementation of IdeRuntime
    
    This is the minimum required to work as it only handles
    default JHBuild configurations

 configure.ac                      |    2 +
 plugins/Makefile.am               |    1 +
 plugins/jhbuild/Makefile.am       |   12 ++++
 plugins/jhbuild/configure.ac      |   16 ++++++
 plugins/jhbuild/jhbuild.plugin    |    8 +++
 plugins/jhbuild/jhbuild_plugin.py |  101 +++++++++++++++++++++++++++++++++++++
 6 files changed, 140 insertions(+), 0 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index eb220ed..e8e6d35 100644
--- a/configure.ac
+++ b/configure.ac
@@ -250,6 +250,7 @@ m4_include([plugins/gnome-code-assistance/configure.ac])
 m4_include([plugins/html-completion/configure.ac])
 m4_include([plugins/html-preview/configure.ac])
 m4_include([plugins/jedi/configure.ac])
+m4_include([plugins/jhbuild/configure.ac])
 m4_include([plugins/library-template/configure.ac])
 m4_include([plugins/mingw/configure.ac])
 m4_include([plugins/project-tree/configure.ac])
@@ -493,6 +494,7 @@ echo "  Global File Search ................... : ${enable_file_search_plugin}"
 echo "  GNOME Code Assistance ................ : ${enable_gnome_code_assistance_plugin}"
 echo "  HTML Autocompletion .................. : ${enable_html_completion_plugin}"
 echo "  HTML and Markdown Preview ............ : ${enable_html_preview_plugin}"
+echo "  JHBuild .............................. : ${enable_jhbuild_plugin}"
 echo "  MinGW ................................ : ${enable_mingw_plugin}"
 echo "  Project Creation ..................... : ${enable_create_project_plugin}"
 echo "  Project Tree ......................... : ${enable_project_tree_plugin}"
diff --git a/plugins/Makefile.am b/plugins/Makefile.am
index 8bd3936..7ccd8fe 100644
--- a/plugins/Makefile.am
+++ b/plugins/Makefile.am
@@ -17,6 +17,7 @@ SUBDIRS = \
        html-completion \
        html-preview \
        jedi \
+       jhbuild \
        library-template \
        project-tree \
        python-gi-imports-completion \
diff --git a/plugins/jhbuild/Makefile.am b/plugins/jhbuild/Makefile.am
new file mode 100644
index 0000000..34793d9
--- /dev/null
+++ b/plugins/jhbuild/Makefile.am
@@ -0,0 +1,12 @@
+if ENABLE_JHBUILD_PLUGIN
+
+EXTRA_DIST = $(plugin_DATA)
+
+plugindir = $(libdir)/gnome-builder/plugins
+dist_plugin_DATA = \
+       jhbuild.plugin \
+       jhbuild_plugin.py
+
+endif
+
+-include $(top_srcdir)/git.mk
diff --git a/plugins/jhbuild/configure.ac b/plugins/jhbuild/configure.ac
new file mode 100644
index 0000000..d08fcf3
--- /dev/null
+++ b/plugins/jhbuild/configure.ac
@@ -0,0 +1,16 @@
+# --enable-jhbuild-plugin=yes/no
+AC_ARG_ENABLE([jhbuild-plugin],
+              [AS_HELP_STRING([--enable-jhbuild-plugin=@<:@yes/no@:>@],
+                              [Build with support for building with JHBuild.])],
+              [enable_jhbuild_plugin=$enableval],
+              [enable_jhbuild_plugin=yes])
+
+AS_IF([test x$enable_python_scripting != xyes && test x$enable_jhbuild_plugin = xyes],[
+       enable_jhbuild_plugin=no
+])
+
+# for if ENABLE_JHBUILD_PLUGIN in Makefile.am
+AM_CONDITIONAL(ENABLE_JHBUILD_PLUGIN, test x$enable_jhbuild_plugin = xyes)
+
+# Ensure our makefile is generated by autoconf
+AC_CONFIG_FILES([plugins/jhbuild/Makefile])
diff --git a/plugins/jhbuild/jhbuild.plugin b/plugins/jhbuild/jhbuild.plugin
new file mode 100644
index 0000000..0a7068d
--- /dev/null
+++ b/plugins/jhbuild/jhbuild.plugin
@@ -0,0 +1,8 @@
+[Plugin]
+Module=jhbuild_plugin
+Name=JHBuild
+Description=Provides support for building with JHBuild
+Authors=Patrick Griffis <tingping tingping se>
+Copyright=Copyright © 2016 Patrick Griffis
+Loader=python3
+Builtin=true
diff --git a/plugins/jhbuild/jhbuild_plugin.py b/plugins/jhbuild/jhbuild_plugin.py
new file mode 100644
index 0000000..3fc3d5d
--- /dev/null
+++ b/plugins/jhbuild/jhbuild_plugin.py
@@ -0,0 +1,101 @@
+#!/usr/bin/env python3
+
+# jhbuild_plugin.py
+#
+# Copyright (C) 2016 Patrick Griffis <tingping tingping se>
+#
+# 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 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that 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/>.
+
+import os
+
+import gi
+gi.require_version('Ide', '1.0')
+
+from gi.repository import (
+    GLib,
+    GObject,
+    Gio,
+    Ide,
+)
+
+class JhbuildRuntime(Ide.Runtime):
+
+    def __init__(self, *args, **kwargs):
+        Ide.Runtime.__init__(self, *args, **kwargs)
+
+    def do_create_launcher(self):
+        try:
+            launcher = Ide.Runtime.do_create_launcher(self)
+            launcher.push_argv('jhbuild')
+            launcher.push_argv('run')
+            return launcher
+        except GLib.Error:
+            return None
+
+    def do_prepare_configuration(self, configuration):
+        launcher = self.create_launcher()
+        launcher.push_argv('sh')
+        launcher.push_argv('-c')
+        launcher.push_argv('echo $JHBUILD_PREFIX')
+        launcher.set_flags(Gio.SubprocessFlags.STDOUT_PIPE)
+
+        prefix = None
+        try:
+            # FIXME: Async
+            subprocess = launcher.spawn_sync (None)
+            success, output, err_output = subprocess.communicate_utf8 (None, None)
+            if success:
+                prefix = output.strip()
+        except GLib.Error:
+            pass
+
+        if not prefix:
+            prefix = os.path.join(GLib.get_home_dir(), 'jhbuild', 'install')
+
+        configuration.set_prefix(prefix)
+
+    def do_contains_program_in_path(self, program, cancellable):
+        launcher = self.create_launcher()
+        launcher.push_argv('which')
+        launcher.push_argv(program)
+
+        try:
+            subprocess = launcher.spawn_sync (cancellable)
+            return subprocess.wait_check (cancellable)
+        except GLib.Error:
+            return False
+
+class JhbuildRuntimeProvider(GObject.Object, Ide.RuntimeProvider):
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(self, *args, **kwargs)
+        self.runtimes = []
+
+    @staticmethod
+    def _is_jhbuild_installed():
+        # This could be installed into another path, but their build system
+        # defaults to ~/.local
+        jhbuild_path = os.path.join(GLib.get_home_dir(), '.local', 'bin', 'jhbuild')
+        return os.path.isfile(jhbuild_path)
+
+    def do_load(self, manager):
+        if self._is_jhbuild_installed():
+            runtime = JhbuildRuntime(id="jhbuild", display_name="JHBuild")
+            manager.add(runtime)
+            self.runtimes.append(runtime)
+
+    def do_unload(self, manager):
+        for runtime in self.runtimes:
+            manager.remove(runtime)
+        self.runtimes = []