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[gnome-builder/wip/gtk4-port] plugins/host: add host plugin for runtime access

commit f4b82445af9df5b865b5fcca1ff55f36eccfd547
Author: Christian Hergert <chergert redhat com>
Date:   Tue Jun 28 03:17:20 2022 -0700

    plugins/host: add host plugin for runtime access

 src/plugins/host/gbp-host-runtime-provider.c |  97 ++++++++++++++++
 src/plugins/host/gbp-host-runtime-provider.h |  31 +++++
 src/plugins/host/gbp-host-runtime.c          | 162 +++++++++++++++++++++++++++
 src/plugins/host/gbp-host-runtime.h          |  31 +++++
 src/plugins/host/host-plugin.c               |  35 ++++++
 src/plugins/host/host.gresource.xml          |   6 +
 src/plugins/host/host.plugin                 |   9 ++
 src/plugins/host/meson.build                 |  13 +++
 src/plugins/meson.build                      |   1 +
 9 files changed, 385 insertions(+)
---
diff --git a/src/plugins/host/gbp-host-runtime-provider.c b/src/plugins/host/gbp-host-runtime-provider.c
new file mode 100644
index 000000000..27b395d13
--- /dev/null
+++ b/src/plugins/host/gbp-host-runtime-provider.c
@@ -0,0 +1,97 @@
+/* gbp-host-runtime-provider.c
+ *
+ * Copyright 2022 Christian Hergert <chergert redhat com>
+ *
+ * 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/>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+#define G_LOG_DOMAIN "gbp-host-runtime-provider"
+
+#include "config.h"
+
+#include <glib/gi18n.h>
+
+#include <libide-foundry.h>
+
+#include "gbp-host-runtime.h"
+#include "gbp-host-runtime-provider.h"
+
+struct _GbpHostRuntimeProvider
+{
+  IdeObject       parent_instance;
+  GbpHostRuntime *runtime;
+};
+
+static void
+gbp_host_runtime_provider_load (IdeRuntimeProvider *provider,
+                                IdeRuntimeManager  *runtime_manager)
+{
+  GbpHostRuntimeProvider *self = (GbpHostRuntimeProvider *)provider;
+
+  IDE_ENTRY;
+
+  g_assert (IDE_IS_MAIN_THREAD ());
+  g_assert (GBP_IS_HOST_RUNTIME_PROVIDER (self));
+  g_assert (IDE_IS_RUNTIME_MANAGER (runtime_manager));
+
+  self->runtime = g_object_new (GBP_TYPE_HOST_RUNTIME,
+                                "id", "host",
+                                "name", _("Host Operating System"),
+                                "category", _("Host System"),
+                                "parent", self,
+                                NULL);
+  ide_runtime_manager_add (runtime_manager, IDE_RUNTIME (self->runtime));
+
+  IDE_EXIT;
+}
+
+static void
+gbp_host_runtime_provider_unload (IdeRuntimeProvider *provider,
+                                  IdeRuntimeManager  *runtime_manager)
+{
+  GbpHostRuntimeProvider *self = (GbpHostRuntimeProvider *)provider;
+
+  IDE_ENTRY;
+
+  g_assert (IDE_IS_MAIN_THREAD ());
+  g_assert (GBP_IS_HOST_RUNTIME_PROVIDER (self));
+  g_assert (IDE_IS_RUNTIME_MANAGER (runtime_manager));
+
+  ide_runtime_manager_remove (runtime_manager, IDE_RUNTIME (self->runtime));
+  ide_clear_and_destroy_object (&self->runtime);
+
+  IDE_EXIT;
+}
+
+static void
+runtime_provider_iface_emit (IdeRuntimeProviderInterface *iface)
+{
+  iface->load = gbp_host_runtime_provider_load;
+  iface->unload = gbp_host_runtime_provider_unload;
+}
+
+G_DEFINE_FINAL_TYPE_WITH_CODE (GbpHostRuntimeProvider, gbp_host_runtime_provider, IDE_TYPE_OBJECT,
+                               G_IMPLEMENT_INTERFACE (IDE_TYPE_RUNTIME_PROVIDER, 
runtime_provider_iface_emit))
+
+static void
+gbp_host_runtime_provider_class_init (GbpHostRuntimeProviderClass *klass)
+{
+}
+
+static void
+gbp_host_runtime_provider_init (GbpHostRuntimeProvider *self)
+{
+}
diff --git a/src/plugins/host/gbp-host-runtime-provider.h b/src/plugins/host/gbp-host-runtime-provider.h
new file mode 100644
index 000000000..3b9be6321
--- /dev/null
+++ b/src/plugins/host/gbp-host-runtime-provider.h
@@ -0,0 +1,31 @@
+/* gbp-host-runtime-provider.h
+ *
+ * Copyright 2022 Christian Hergert <chergert redhat com>
+ *
+ * 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/>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+#pragma once
+
+#include <libide-core.h>
+
+G_BEGIN_DECLS
+
+#define GBP_TYPE_HOST_RUNTIME_PROVIDER (gbp_host_runtime_provider_get_type())
+
+G_DECLARE_FINAL_TYPE (GbpHostRuntimeProvider, gbp_host_runtime_provider, GBP, HOST_RUNTIME_PROVIDER, 
IdeObject)
+
+G_END_DECLS
diff --git a/src/plugins/host/gbp-host-runtime.c b/src/plugins/host/gbp-host-runtime.c
new file mode 100644
index 000000000..d1cb8286a
--- /dev/null
+++ b/src/plugins/host/gbp-host-runtime.c
@@ -0,0 +1,162 @@
+/* gbp-host-runtime.c
+ *
+ * Copyright 2022 Christian Hergert <chergert redhat com>
+ *
+ * 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/>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+#define G_LOG_DOMAIN "gbp-host-runtime"
+
+#include "config.h"
+
+#include "gbp-host-runtime.h"
+
+struct _GbpHostRuntime
+{
+  IdeRuntime parent_instance;
+};
+
+G_DEFINE_FINAL_TYPE (GbpHostRuntime, gbp_host_runtime, IDE_TYPE_RUNTIME)
+
+static gboolean
+gbp_host_runtime_native_contains_program_in_path (IdeRuntime   *runtime,
+                                                  const char   *program,
+                                                  GCancellable *cancellable)
+{
+  return g_find_program_in_path (program) != NULL;
+}
+
+static gboolean
+gbp_host_runtime_flatpak_contains_program_in_path (IdeRuntime   *runtime,
+                                                   const char   *program,
+                                                   GCancellable *cancellable)
+{
+  g_autoptr(IdeSubprocess) subprocess = NULL;
+  g_autoptr(IdeRunContext) run_context = NULL;
+  g_autoptr(GError) error = NULL;
+  gboolean ret = FALSE;
+
+  IDE_ENTRY;
+
+  g_assert (GBP_IS_HOST_RUNTIME (runtime));
+  g_assert (program != NULL);
+  g_assert (!cancellable || G_IS_CANCELLABLE (cancellable));
+
+  run_context = ide_run_context_new ();
+  ide_run_context_push_host (run_context);
+  ide_run_context_push_shell (run_context, TRUE);
+  ide_run_context_append_argv (run_context, "which");
+  ide_run_context_append_argv (run_context, program);
+
+  if ((subprocess = ide_run_context_spawn (run_context, &error)))
+    ret = ide_subprocess_wait_check (subprocess, cancellable, NULL);
+
+  if (error != NULL)
+    g_warning ("Failed to spawn subprocess: %s", error->message);
+
+  IDE_RETURN (ret);
+}
+
+static void
+gbp_host_runtime_prepare_to_build (IdeRuntime    *runtime,
+                                   IdePipeline   *pipeline,
+                                   IdeRunContext *run_context)
+{
+  IDE_ENTRY;
+
+  g_assert (GBP_IS_HOST_RUNTIME (runtime));
+  g_assert (IDE_IS_PIPELINE (pipeline));
+  g_assert (IDE_IS_RUN_CONTEXT (run_context));
+
+  ide_run_context_push_host (run_context);
+
+  IDE_EXIT;
+}
+
+static void
+gbp_host_runtime_prepare_to_run (IdeRuntime    *runtime,
+                                 IdePipeline   *pipeline,
+                                 IdeRunContext *run_context)
+{
+  g_autofree char *libdir = NULL;
+  const char *prefix;
+  IdeConfig *config;
+
+  IDE_ENTRY;
+
+  g_assert (GBP_IS_HOST_RUNTIME (runtime));
+  g_assert (IDE_IS_PIPELINE (pipeline));
+  g_assert (IDE_IS_RUN_CONTEXT (run_context));
+
+  ide_run_context_push_host (run_context);
+  ide_run_context_add_minimal_environment (run_context);
+
+  config = ide_pipeline_get_config (pipeline);
+  prefix = ide_config_get_prefix (config);
+
+  /* LD_LIBRARY_PATH */
+  {
+    static const gchar *tries[] = { "lib64", "lib", "lib32", };
+
+    for (guint i = 0; i < G_N_ELEMENTS (tries); i++)
+      {
+        g_autofree gchar *ld_library_path = g_build_filename (prefix, tries[i], NULL);
+
+        if (g_file_test (ld_library_path, G_FILE_TEST_IS_DIR))
+          {
+            ide_run_context_setenv (run_context, "LD_LIBRARY_PATH", ld_library_path);
+            libdir = g_steal_pointer (&ld_library_path);
+            break;
+          }
+      }
+  }
+
+  /* GSETTINGS_SCHEMA_DIR */
+  {
+    g_autofree gchar *schemadir = NULL;
+
+    schemadir = g_build_filename (prefix, "share", "glib-2.0", "schemas", NULL);
+    ide_run_context_setenv (run_context, "GSETTINGS_SCHEMA_DIR", schemadir);
+  }
+
+  /* GI_TYPELIB_PATH */
+  if (libdir != NULL)
+    {
+      g_autofree char *typelib_path = g_build_filename (libdir, "girepository-1.0", NULL);
+      ide_run_context_setenv (run_context, "GI_TYPELIB_PATH", typelib_path);
+    }
+
+  IDE_EXIT;
+}
+
+static void
+gbp_host_runtime_class_init (GbpHostRuntimeClass *klass)
+{
+  IdeRuntimeClass *runtime_class = IDE_RUNTIME_CLASS (klass);
+
+  if (ide_is_flatpak ())
+    runtime_class->contains_program_in_path = gbp_host_runtime_flatpak_contains_program_in_path;
+  else
+    runtime_class->contains_program_in_path = gbp_host_runtime_native_contains_program_in_path;
+
+  runtime_class->prepare_to_run = gbp_host_runtime_prepare_to_run;
+  runtime_class->prepare_to_build = gbp_host_runtime_prepare_to_build;
+}
+
+static void
+gbp_host_runtime_init (GbpHostRuntime *self)
+{
+}
diff --git a/src/plugins/host/gbp-host-runtime.h b/src/plugins/host/gbp-host-runtime.h
new file mode 100644
index 000000000..d39efcc16
--- /dev/null
+++ b/src/plugins/host/gbp-host-runtime.h
@@ -0,0 +1,31 @@
+/* gbp-host-runtime.h
+ *
+ * Copyright 2022 Christian Hergert <chergert redhat com>
+ *
+ * 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/>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+#pragma once
+
+#include <libide-foundry.h>
+
+G_BEGIN_DECLS
+
+#define GBP_TYPE_HOST_RUNTIME (gbp_host_runtime_get_type())
+
+G_DECLARE_FINAL_TYPE (GbpHostRuntime, gbp_host_runtime, GBP, HOST_RUNTIME, IdeRuntime)
+
+G_END_DECLS
diff --git a/src/plugins/host/host-plugin.c b/src/plugins/host/host-plugin.c
new file mode 100644
index 000000000..65c4d115d
--- /dev/null
+++ b/src/plugins/host/host-plugin.c
@@ -0,0 +1,35 @@
+/* host-plugin.c
+ *
+ * Copyright 2022 Christian Hergert <chergert redhat com>
+ *
+ * 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/>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+#include "config.h"
+
+#include <libpeas/peas.h>
+
+#include <libide-foundry.h>
+
+#include "gbp-host-runtime-provider.h"
+
+_IDE_EXTERN void
+_gbp_host_register_types (PeasObjectModule *module)
+{
+  peas_object_module_register_extension_type (module,
+                                              IDE_TYPE_RUNTIME_PROVIDER,
+                                              GBP_TYPE_HOST_RUNTIME_PROVIDER);
+}
diff --git a/src/plugins/host/host.gresource.xml b/src/plugins/host/host.gresource.xml
new file mode 100644
index 000000000..d4ee03a92
--- /dev/null
+++ b/src/plugins/host/host.gresource.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<gresources>
+  <gresource prefix="/plugins/host">
+    <file>host.plugin</file>
+  </gresource>
+</gresources>
diff --git a/src/plugins/host/host.plugin b/src/plugins/host/host.plugin
new file mode 100644
index 000000000..2a52274a7
--- /dev/null
+++ b/src/plugins/host/host.plugin
@@ -0,0 +1,9 @@
+[Plugin]
+Authors=Christian Hergert <christian hergert me>
+Builtin=true
+Copyright=Copyright © 2022 Christian Hergert
+Description=Access to host system as a runtime
+Embedded=_gbp_host_register_types
+Hidden=true
+Module=host
+Name=Host
diff --git a/src/plugins/host/meson.build b/src/plugins/host/meson.build
new file mode 100644
index 000000000..36be52139
--- /dev/null
+++ b/src/plugins/host/meson.build
@@ -0,0 +1,13 @@
+plugins_sources += files([
+  'host-plugin.c',
+  'gbp-host-runtime.c',
+  'gbp-host-runtime-provider.c',
+])
+
+plugin_host_resources = gnome.compile_resources(
+  'host-resources',
+  'host.gresource.xml',
+  c_name: 'gbp_host',
+)
+
+plugins_sources += plugin_host_resources
diff --git a/src/plugins/meson.build b/src/plugins/meson.build
index b7a842244..30b52727f 100644
--- a/src/plugins/meson.build
+++ b/src/plugins/meson.build
@@ -83,6 +83,7 @@ subdir('gopls')
 subdir('gradle')
 subdir('greeter')
 subdir('grep')
+subdir('host')
 subdir('html-completion')
 subdir('html-preview')
 subdir('intelephense')
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