[PATCH] scripts/get_maintainer.pl: add support for STDIN:

[Borislav Petkov <petkovbb@googlemail.com>]

Teach get_maintainer.pl to read a diff from STDIN so that you can do
something like:

git diff | ./scripts/get_maintainer.pl -

and have the Cc: list before writing the commit message.

Cc: Joe Perches <joe@perches.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
---
 scripts/get_maintainer.pl |   12 ++++++++----
 1 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/scripts/get_maintainer.pl b/scripts/get_maintainer.pl
index 445e884..80d5a69 100755
--- a/scripts/get_maintainer.pl
+++ b/scripts/get_maintainer.pl
@@ -5,7 +5,7 @@
 # Print selected MAINTAINERS information for
 # the files modified in a patch or for a file
 #
-# usage: perl scripts/get_maintainer.pl [OPTIONS] <patch>
+# usage: perl scripts/get_maintainer.pl [OPTIONS] <patch>|STDIN
 #        perl scripts/get_maintainer.pl [OPTIONS] -f <file>
 #
 # Licensed under the terms of the GNU GPL License version 2
@@ -237,7 +237,7 @@ foreach my $file (@ARGV) {
     ##if $file is a directory and it lacks a trailing slash, add one
     if ((-d $file)) {
 	$file =~ s@([^/])$@$1/@;
-    } elsif (!(-f $file)) {
+    } elsif (!(-f $file) && ($file ne '-')) {
 	die "$P: file '${file}' not found\n";
     }
     if ($from_filename) {
@@ -255,7 +255,11 @@ foreach my $file (@ARGV) {
     } else {
 	my $file_cnt = @files;
 	my $lastfile;
-	open(PATCH, "<$file") or die "$P: Can't open ${file}\n";
+	if ($file eq '-') {
+	    open(PATCH, "<&STDIN");
+	} else {
+	    open(PATCH, "<$file") or die "$P: Can't open ${file}\n";
+	}
 	while (<PATCH>) {
 	    my $patch_line = $_;
 	    if (m/^\+\+\+\s+(\S+)/) {
@@ -422,7 +426,7 @@ sub file_match_pattern {

 sub usage {
     print <<EOT;
-usage: $P [options] patchfile
+usage: $P [options] patchfile|-
        $P [options] -f file|directory
 version: $V

-- 
1.6.5.4


-- 
Regards/Gruss,
Boris