Merge branch 'ew/diff'
[git] / templates / hooks--update
1 #!/bin/sh
2 #
3 # An example hook script to mail out commit update information.
4 # It also blocks tags that aren't annotated.
5 # Called by git-receive-pack with arguments: refname sha1-old sha1-new
6 #
7 # To enable this hook:
8 # (1) change the recipient e-mail address
9 # (2) make this file executable by "chmod +x update".
10 #
11
12 project=$(cat $GIT_DIR/description)
13 recipients="commit-list@somewhere.com commit-list@somewhereelse.com"
14
15 ref_type=$(git cat-file -t "$3")
16
17 # Only allow annotated tags in a shared repo
18 # Remove this code to treat dumb tags the same as everything else
19 case "$1","$ref_type" in
20 refs/tags/*,commit)
21         echo "*** Un-annotated tags are not allowed in this repo" >&2
22         echo "*** Use 'git tag [ -a | -s ]' for tags you want to propagate."
23         exit 1;;
24 refs/tags/*,tag)
25         echo "### Pushing version '${1##refs/tags/}' to the masses" >&2
26         # recipients="release-announce@somwehere.com announce@somewhereelse.com"
27         ;;
28 esac
29
30 # set this  to 'cat' to get a very detailed listing.
31 # short only kicks in when an annotated tag is added
32 short='git shortlog'
33
34 # see 'date --help' for info on how to write this
35 # The default is a human-readable iso8601-like format with minute
36 # precision ('2006-01-25 15:58 +0100' for example)
37 date_format="%F %R %z"
38
39 (if expr "$2" : '0*$' >/dev/null
40 then
41         # new ref
42         case "$1" in
43         refs/tags/*)
44                 # a pushed and annotated tag (usually) means a new version
45                 tag="${1##refs/tags/}"
46                 if [ "$ref_type" = tag ]; then
47                         eval $(git cat-file tag $3 | \
48                                 sed -n '4s/tagger \([^>]*>\)[^0-9]*\([0-9]*\).*/tagger="\1" ts="\2"/p')
49                         date=$(date --date="1970-01-01 00:00:00 $ts seconds" +"$date_format")
50                         echo "Tag '$tag' created by $tagger at $date"
51                         git cat-file tag $3 | sed -n '5,$p'
52                         echo
53                 fi
54                 prev=$(git describe "$3^" | sed 's/-g.*//')
55                 # the first tag in a repo will yield no $prev
56                 if [ -z "$prev" ]; then
57                         echo "Changes since the dawn of time:"
58                         git rev-list --pretty $3 | $short
59                 else
60                         echo "Changes since $prev:"
61                         git rev-list --pretty $prev..$3 | $short
62                         echo ---
63                         git diff --stat $prev..$3
64                         echo ---
65                 fi
66                 ;;
67
68         refs/heads/*)
69                 branch="${1##refs/heads/}"
70                 echo "New branch '$branch' available with the following commits:"
71                 git-rev-list --pretty "$3" $(git-rev-parse --not --all)
72                 ;;
73         esac
74 else
75         base=$(git-merge-base "$2" "$3")
76         case "$base" in
77         "$2")
78                 git diff --stat "$3" "^$base"
79                 echo
80                 echo "New commits:"
81                 ;;
82         *)
83                 echo "Rebased ref, commits from common ancestor:"
84                 ;;
85         esac
86         git-rev-list --pretty "$3" "^$base"
87 fi) |
88 mail -s "$project: Changes to '${1##refs/heads/}'" $recipients
89 exit 0