[gnome-continuous-yocto/gnomeostree-3.28-rocko: 6292/8267] wic: add wic_init_parser_ls

[Emmanuele Bassi <ebassi src gnome org>]

commit 04a99adc2935326446a3d7c7a93eed12a5280b2a
Author: Ed Bartosh <ed bartosh linux intel com>
Date:   Tue Jun 13 14:21:53 2017 +0300

    wic: add wic_init_parser_ls
    
    Added parser for 'wic ls' command.
    
    (From OE-Core rev: 8db6f74b684fecc7dd4d23d327a9b6310cdd3ec9)
    
    Signed-off-by: Ed Bartosh <ed bartosh linux intel com>
    Signed-off-by: Richard Purdie <richard purdie linuxfoundation org>

 scripts/wic |   25 +++++++++++++++++++++++++
 1 files changed, 25 insertions(+), 0 deletions(-)
---
diff --git a/scripts/wic b/scripts/wic
index 49cad86..6c9a30d 100755
--- a/scripts/wic
+++ b/scripts/wic
@@ -35,6 +35,8 @@ import os
 import sys
 import argparse
 import logging
+
+from collections import namedtuple
 from distutils import spawn
 
 # External modules
@@ -317,6 +319,29 @@ def wic_init_parser_list(subparser):
                              "defined inside the .wks file")
     return
 
+def imgtype(arg):
+    """
+    Custom type for ArgumentParser
+    Converts path spec to named tuple: (image, partition, path)
+    """
+    image = arg
+    part = path = None
+    if ':' in image:
+        image, part = image.split(':')
+        if '/' in part:
+            part, path = part.split('/', 1)
+
+    if not os.path.isfile(image):
+        err = "%s is not a regular file or symlink" % image
+        raise argparse.ArgumentTypeError(err)
+
+    return namedtuple('ImgType', 'image part path')(image, part, path)
+
+def wic_init_parser_ls(subparser):
+    subparser.add_argument("path", type=imgtype,
+                        help="image spec: <image>[:<vfat partition>[<path>]]")
+    subparser.add_argument("-n", "--native-sysroot",
+                        help="path to the native sysroot containing the tools")
 
 def wic_init_parser_help(subparser):
     helpparsers = subparser.add_subparsers(dest='help_topic', help=hlp.wic_usage)