list: add name-only and path-only options

`repo list -n` prints only the name of the projects.
`repo list -p` prints only the path of the projects.

Change-Id: If7d78eb2651f0b1b2fe555dc286bd2bdcad0d56d
Signed-off-by: Chirayu Desai <cdesai@cyanogenmod.org>

subcmds/list.py

@@ -15,6 +15,7 @@
 
 from __future__ import print_function
 import re
+import sys
 
 from command import Command, MirrorSafeCommand
 
@@ -38,6 +39,12 @@ This is similar to running: repo forall -c 'echo "$REPO_PATH : $REPO_PROJECT"'.
     p.add_option('-f', '--fullpath',
                  dest='fullpath', action='store_true',
                  help="Display the full work tree path instead of the relative path")
+    p.add_option('-n', '--name-only',
+                 dest='name_only', action='store_true',
+                 help="Display only the name of the repository")
+    p.add_option('-p', '--path-only',
+                 dest='path_only', action='store_true',
+                 help="Display only the path of the repository")
 
   def Execute(self, opt, args):
     """List all projects and the associated directories.
@@ -50,6 +57,11 @@ This is similar to running: repo forall -c 'echo "$REPO_PATH : $REPO_PROJECT"'.
       opt: The options.
       args: Positional args.  Can be a list of projects to list, or empty.
     """
+
+    if opt.fullpath and opt.name_only:
+      print('error: cannot combine -f and -n', file=sys.stderr)
+      sys.exit(1)
+
     if not opt.regex:
       projects = self.GetProjects(args)
     else:
@@ -62,7 +74,12 @@ This is similar to running: repo forall -c 'echo "$REPO_PATH : $REPO_PROJECT"'.
 
     lines = []
     for project in projects:
-      lines.append("%s : %s" % (_getpath(project), project.name))
+      if opt.name_only and not opt.path_only:
+        lines.append("%s" % ( project.name))
+      elif opt.path_only and not opt.name_only:
+        lines.append("%s" % (_getpath(project)))
+      else:
+        lines.append("%s : %s" % (_getpath(project), project.name))
 
     lines.sort()
     print('\n'.join(lines))