Move get_crystfel_exe and get_crystfel_path_str to crystfel_gui.c

1 files changed, 68 insertions, 0 deletions

diff --git a/src/crystfel_gui.c b/src/crystfel_gui.c
index 8ceef8fb..7be8e67b 100644
--- a/src/crystfel_gui.c
+++ b/src/crystfel_gui.c
@@ -1187,3 +1187,71 @@ void add_running_task(struct crystfelproject *proj,
 
 	g_timeout_add(500, update_info_bar, task);
 }
+
+
+static GFile *get_crystfel_path_gfile()
+{
+	GFile *self;
+	GFileInfo *self_info;
+	const char *self_target;
+	GFile *tar;
+	GFile *parent_dir;
+	GError *error = NULL;
+
+	self = g_file_new_for_path("/proc/self/exe");
+	self_info = g_file_query_info(self, "standard",
+	                              G_FILE_QUERY_INFO_NONE,
+	                              NULL, &error);
+	if ( self_info == NULL ) return NULL;
+
+	self_target = g_file_info_get_symlink_target(self_info);
+	if ( self_target == NULL ) return NULL;
+
+	tar = g_file_new_for_path(self_target);
+	if ( tar == NULL ) return NULL;
+
+	parent_dir = g_file_get_parent(tar);
+	if ( parent_dir == NULL ) return NULL;
+
+	g_object_unref(self);
+	g_object_unref(self_info);
+	g_object_unref(tar);
+
+	return parent_dir;
+}
+
+
+char *get_crystfel_path_str()
+{
+	char *path;
+	GFile *crystfel_path = get_crystfel_path_gfile();
+	if ( crystfel_path == NULL ) return NULL;
+	path = g_file_get_path(crystfel_path);
+	g_object_unref(crystfel_path);
+	return path;
+}
+
+
+char *get_crystfel_exe(const char *program)
+{
+	GFile *crystfel_path;
+	char *exe_path;
+	GFile *exe;
+
+	crystfel_path = get_crystfel_path_gfile();
+	if ( crystfel_path == NULL ) return NULL;
+
+	exe = g_file_get_child(crystfel_path, program);
+	if ( exe == NULL ) {
+		ERROR("Couldn't determine executable path. "
+		      "This is OK provided the executable "
+		      "path is set correctly.\n");
+		exe_path = strdup(program);
+	}
+
+	exe_path = g_file_get_path(exe);
+	g_object_unref(exe);
+	g_object_unref(crystfel_path);
+
+	return exe_path;
+}