[Xen-devel] [PATCH v2] Allow get_maintainer.pl / add_maintainers.pl scripts to be called outside of xen.git

[Lars Kurth <lars.kurth@xxxxxxxxxx>]

Use-case: Allow using both scripts on xen repositories such as
mini-os.git, osstest.git,

Tool changes:
* add_maintainers.pl: $get_maintainer inherits path from $0
* get_maintainer.pl: warn (instead fo die) when called
  from a different tree

Assumptions: the repository contains a MAINTAINERS file that
follows the same conventions as the file in xen.git

A suggested template

========================================================
This file follows the same conventions as outlined in
xen.git:MAINTAINERS. Please refer to the file in xen.git
for more information.

THE REST
M:      MAINTAINER1 <maintainer1@xxxxxxxxx>
M:      MAINTAINER2 <maintainer2@xxxxxxxxx>
L:      xen-devel@xxxxxxxxxxxxxxxxxxxx
S:      Supported
F:      */
========================================================

Signed-off-by: Lars Kurth <lars.kurth@xxxxxxxxxx>
---
 scripts/add_maintainers.pl |  4 ++--
 scripts/get_maintainer.pl  | 13 +++++++++++--
 2 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/scripts/add_maintainers.pl b/scripts/add_maintainers.pl
index 09e9f6609f..5a6d0f631b 100755
--- a/scripts/add_maintainers.pl
+++ b/scripts/add_maintainers.pl
@@ -26,9 +26,9 @@ sub insert ($$$$);
 sub hastag ($$);
 
 # Tool Variables
-my $get_maintainer      = "./scripts/get_maintainer.pl";
-
 my $tool = $0;
+my $get_maintainer = $tool;
+$get_maintainer =~ s/add_maintainers/get_maintainer/;
 my $usage = <<EOT;
 OPTIONS:
 --------
diff --git a/scripts/get_maintainer.pl b/scripts/get_maintainer.pl
index 174dfb7e40..f1e9c904ee 100755
--- a/scripts/get_maintainer.pl
+++ b/scripts/get_maintainer.pl
@@ -266,8 +266,17 @@ if ($email &&
 }
 
 if (!top_of_tree($xen_path)) {
-    die "$P: The current directory does not appear to be "
-       . "a Xen source tree.\n";
+    # Do not exit, but print an error message to STDERR to allow calling
+    # the tool from xen-related repos such as mini-os.git,
+    # live patch-build-tools.git, etc
+    print STDERR "$P:\n".
+          "=====================================================\n".
+          "WARNING: The current directory does not appear to be \n".
+         "the xen.git source tree.\n\n".
+          "The tool works outside of the xen.git tree, if the\n".
+          "MAINTAINERS file follows the same format as that of\n".
+          "xen.git. Use at your own peril.\n".
+          "=====================================================\n";
 }
 
 ## Read MAINTAINERS for type/value pairs
-- 
2.13.0


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