git log -p --merge [[--] paths...]
[git/git.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 $prev..$3 | diffstat -p1
64 echo ---
65 fi
66 ;;
67
68 refs/heads/*)
69 branch="${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 "$3" "^$base" | diffstat -p1
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