wic: Add command to list available source plugins

Add a 'wic list source-plugins' command enabling users to get a list
of valid partition --sources.  This is useful not only for determining
sources to use in .wks partition statements, but also for making sense
of errors in .wks partition processing.

(From OE-Core rev: 37db9423e7872012fabde67e8858db5b512832f6)

Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 13 insertions, 0 deletions

diff --git a/scripts/lib/image/engine.py b/scripts/lib/image/engine.py
index 1256236304..b850bb9bfe 100644
--- a/scripts/lib/image/engine.py
+++ b/scripts/lib/image/engine.py
@@ -174,6 +174,16 @@ def list_canned_image_help(scripts_path, fullpath):
             break
 
 
+def list_source_plugins():
+    """
+    List the available source plugins i.e. plugins available for --source.
+    """
+    plugins = pluginmgr.get_source_plugins()
+
+    for plugin in plugins:
+        print "  %s" % plugin
+
+
 def wic_create(args, wks_file, rootfs_dir, bootimg_dir, kernel_dir,
                native_sysroot, hdddir, staging_data_dir, scripts_path,
                image_output_dir, debug, properties_file, properties=None):
@@ -258,6 +268,9 @@ def wic_list(args, scripts_path, properties_file):
         if args[0] == "images":
             list_canned_images(scripts_path)
             return True
+        elif args[0] == "source-plugins":
+            list_source_plugins()
+            return True
         elif args[0] == "properties":
             return True
         else: