tcommit-msg.hook - plan9port - [fork] Plan 9 from user space
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       ---
       tcommit-msg.hook (2329B)
       ---
            1 #!/bin/sh
            2 # From Gerrit Code Review 2.2.1
            3 #
            4 # Part of Gerrit Code Review (http://code.google.com/p/gerrit/)
            5 #
            6 # Copyright (C) 2009 The Android Open Source Project
            7 #
            8 # Licensed under the Apache License, Version 2.0 (the "License");
            9 # you may not use this file except in compliance with the License.
           10 # You may obtain a copy of the License at
           11 #
           12 # http://www.apache.org/licenses/LICENSE-2.0
           13 #
           14 # Unless required by applicable law or agreed to in writing, software
           15 # distributed under the License is distributed on an "AS IS" BASIS,
           16 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
           17 # See the License for the specific language governing permissions and
           18 # limitations under the License.
           19 #
           20 
           21 CHANGE_ID_AFTER="Bug|Issue"
           22 MSG="$1"
           23 
           24 # Check for, and add if missing, a unique Change-Id
           25 #
           26 add_ChangeId() {
           27         clean_message=`sed -e '
           28                 /^diff --git a\/.*/{
           29                         s///
           30                         q
           31                 }
           32                 /^Signed-off-by:/d
           33                 /^#/d
           34         ' "$MSG" | git stripspace`
           35         if test -z "$clean_message"
           36         then
           37                 return
           38         fi
           39 
           40         if grep -i '^Change-Id:' "$MSG" >/dev/null
           41         then
           42                 return
           43         fi
           44 
           45         id=`_gen_ChangeId`
           46         perl -e '
           47                 $MSG = shift;
           48                 $id = shift;
           49                 $CHANGE_ID_AFTER = shift;
           50 
           51                 undef $/;
           52                 open(I, $MSG); $_ = <I>; close I;
           53                 s|^diff --git a/.*||ms;
           54                 s|^#.*$||mg;
           55                 exit unless $_;
           56 
           57                 @message = split /\n/;
           58                 $haveFooter = 0;
           59                 $startFooter = @message;
           60                 for($line = @message - 1; $line >= 0; $line--) {
           61                         $_ = $message[$line];
           62 
           63                         if (/^[a-zA-Z0-9-]+:/ && !m,^[a-z0-9-]+://,) {
           64                                 $haveFooter++;
           65                                 next;
           66                         }
           67                         next if /^[ []/;
           68                         $startFooter = $line if ($haveFooter && /^\r?$/);
           69                         last;
           70                 }
           71 
           72                 @footer = @message[$startFooter+1..@message];
           73                 @message = @message[0..$startFooter];
           74                 push(@footer, "") unless @footer;
           75 
           76                 for ($line = 0; $line < @footer; $line++) {
           77                         $_ = $footer[$line];
           78                         next if /^($CHANGE_ID_AFTER):/i;
           79                         last;
           80                 }
           81                 splice(@footer, $line, 0, "Change-Id: I$id");
           82 
           83                 $_ = join("\n", @message, @footer);
           84                 open(O, ">$MSG"); print O; close O;
           85         ' "$MSG" "$id" "$CHANGE_ID_AFTER"
           86 }
           87 _gen_ChangeIdInput() {
           88         echo "tree `git write-tree`"
           89         if parent=`git rev-parse HEAD^0 2>/dev/null`
           90         then
           91                 echo "parent $parent"
           92         fi
           93         echo "author `git var GIT_AUTHOR_IDENT`"
           94         echo "committer `git var GIT_COMMITTER_IDENT`"
           95         echo
           96         printf '%s' "$clean_message"
           97 }
           98 _gen_ChangeId() {
           99         _gen_ChangeIdInput |
          100         git hash-object -t commit --stdin
          101 }
          102 
          103 
          104 add_ChangeId