[gnome-builder/wip/chergert/pipeline: 2/43] posix: add ide_get_system_type()

[Christian Hergert <chergert src gnome org>]

commit e9ae44ad9bd2d24ab1461f7efcfb07d481675bcb
Author: Christian Hergert <chergert redhat com>
Date:   Fri Feb 3 12:12:14 2017 -0800

    posix: add ide_get_system_type()
    
    This is a helper to get the host device triplet. It simplifies comparing
    an IdeDevice against the system-type.

 libide/local/ide-local-device.c |   35 +++--------------------------------
 libide/util/ide-posix.c         |   36 ++++++++++++++++++++++++++++++++++++
 libide/util/ide-posix.h         |    9 +++++----
 3 files changed, 44 insertions(+), 36 deletions(-)
---
diff --git a/libide/local/ide-local-device.c b/libide/local/ide-local-device.c
index 99f468e..653a4ad 100644
--- a/libide/local/ide-local-device.c
+++ b/libide/local/ide-local-device.c
@@ -21,7 +21,8 @@
 #include <string.h>
 #include <sys/utsname.h>
 
-#include "ide-local-device.h"
+#include "local/ide-local-device.h"
+#include "util/ide-posix.h"
 
 typedef struct
 {
@@ -30,36 +31,6 @@ typedef struct
 
 G_DEFINE_TYPE_WITH_PRIVATE (IdeLocalDevice, ide_local_device, IDE_TYPE_DEVICE)
 
-static gchar *
-get_system_type (void)
-{
-  g_autofree gchar *os_lower = NULL;
-  const gchar *machine = NULL;
-  struct utsname u;
-
-  if (uname (&u) < 0)
-    return g_strdup ("unknown");
-
-  os_lower = g_utf8_strdown (u.sysname, -1);
-
-  /* config.sub doesn't accept amd64-OS */
-  machine = strcmp (u.machine, "amd64") ? u.machine : "x86_64";
-
-  /*
-   * TODO: Clearly we want to discover "gnu", but that should be just fine
-   *       for a default until we try to actually run on something non-gnu.
-   *       Which seems unlikely at the moment. If you run FreeBSD, you can
-   *       probably fix this for me :-) And while you're at it, make the
-   *       uname() call more portable.
-   */
-
-#ifdef __GLIBC__
-  return g_strdup_printf ("%s-%s-%s", machine, os_lower, "gnu");
-#else
-  return g_strdup_printf ("%s-%s", machine, os_lower);
-#endif
-}
-
 static const gchar *
 ide_local_device_get_system_type (IdeDevice *device)
 {
@@ -99,7 +70,7 @@ ide_local_device_init (IdeLocalDevice *self)
 {
   IdeLocalDevicePrivate *priv = ide_local_device_get_instance_private (self);
 
-  priv->system_type = get_system_type ();
+  priv->system_type = g_strdup (ide_get_system_type ());
 
   ide_device_set_display_name (IDE_DEVICE (self), g_get_host_name ());
   ide_device_set_id (IDE_DEVICE (self), "local");
diff --git a/libide/util/ide-posix.c b/libide/util/ide-posix.c
index 5605001..3bbb495 100644
--- a/libide/util/ide-posix.c
+++ b/libide/util/ide-posix.c
@@ -25,6 +25,42 @@
 
 #include "ide-posix.h"
 
+const gchar *
+ide_get_system_type (void)
+{
+  static gchar *system_type;
+  g_autofree gchar *os_lower = NULL;
+  const gchar *machine = NULL;
+  struct utsname u;
+
+  if (system_type != NULL)
+    return system_type;
+
+  if (uname (&u) < 0)
+    return g_strdup ("unknown");
+
+  os_lower = g_utf8_strdown (u.sysname, -1);
+
+  /* config.sub doesn't accept amd64-OS */
+  machine = strcmp (u.machine, "amd64") ? u.machine : "x86_64";
+
+  /*
+   * TODO: Clearly we want to discover "gnu", but that should be just fine
+   *       for a default until we try to actually run on something non-gnu.
+   *       Which seems unlikely at the moment. If you run FreeBSD, you can
+   *       probably fix this for me :-) And while you're at it, make the
+   *       uname() call more portable.
+   */
+
+#ifdef __GLIBC__
+  system_type = g_strdup_printf ("%s-%s-%s", machine, os_lower, "gnu");
+#else
+  system_type = g_strdup_printf ("%s-%s", machine, os_lower);
+#endif
+
+  return system_type;
+}
+
 gchar *
 ide_get_system_arch (void)
 {
diff --git a/libide/util/ide-posix.h b/libide/util/ide-posix.h
index b0bb05f..328f544 100644
--- a/libide/util/ide-posix.h
+++ b/libide/util/ide-posix.h
@@ -23,10 +23,11 @@
 
 G_BEGIN_DECLS
 
-gchar *ide_get_system_arch      (void);
-gsize  ide_get_system_page_size (void) G_GNUC_CONST;
-gchar *ide_path_collapse        (const gchar *path);
-gchar *ide_path_expand          (const gchar *path);
+gchar       *ide_get_system_arch      (void);
+const gchar *ide_get_system_type      (void);
+gsize        ide_get_system_page_size (void) G_GNUC_CONST;
+gchar       *ide_path_collapse        (const gchar *path);
+gchar       *ide_path_expand          (const gchar *path);
 
 G_END_DECLS