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Commit | Line | Data |
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37f1a519 LT |
1 | #!/bin/sh |
2 | ||
9cc2527c | 3 | GIT_DIR=`git-rev-parse --git-dir` || exit $? |
37f1a519 | 4 | |
d165fa14 JH |
5 | die () { |
6 | echo >&2 "$*" | |
7 | exit 1 | |
8 | } | |
9 | ||
a3b427b9 | 10 | usage () { |
eb777612 | 11 | echo >&2 "usage: $(basename $0)"' [-d <branch>] | [[-f] <branch> [start-point]] |
a3b427b9 AW |
12 | |
13 | If no arguments, show available branches and mark current branch with a star. | |
14 | If one argument, create a new branch <branchname> based off of current HEAD. | |
15 | If two arguments, create a new branch <branchname> based off of <start-point>. | |
16 | ' | |
17 | exit 1 | |
18 | } | |
19 | ||
9cc2527c | 20 | headref=$(git-symbolic-ref HEAD | sed -e 's|^refs/heads/||') |
eb777612 | 21 | |
ba65af9c | 22 | delete_branch () { |
03feddd6 JH |
23 | option="$1" |
24 | shift | |
03feddd6 JH |
25 | for branch_name |
26 | do | |
27 | case ",$headref," in | |
28 | ",$branch_name,") | |
29 | die "Cannot delete the branch you are on." ;; | |
30 | ,,) | |
31 | die "What branch are you on anyway?" ;; | |
32 | esac | |
33 | branch=$(cat "$GIT_DIR/refs/heads/$branch_name") && | |
34 | branch=$(git-rev-parse --verify "$branch^0") || | |
35 | die "Seriously, what branch are you talking about?" | |
36 | case "$option" in | |
37 | -D) | |
ba65af9c JH |
38 | ;; |
39 | *) | |
03feddd6 JH |
40 | mbs=$(git-merge-base -a "$branch" HEAD | tr '\012' ' ') |
41 | case " $mbs " in | |
42 | *' '$branch' '*) | |
43 | # the merge base of branch and HEAD contains branch -- | |
44 | # which means that the HEAD contains everything in the HEAD. | |
45 | ;; | |
46 | *) | |
47 | echo >&2 "The branch '$branch_name' is not a strict subset of your current HEAD. | |
48 | If you are sure you want to delete it, run 'git branch -D $branch_name'." | |
49 | exit 1 | |
50 | ;; | |
51 | esac | |
ba65af9c JH |
52 | ;; |
53 | esac | |
03feddd6 JH |
54 | rm -f "$GIT_DIR/refs/heads/$branch_name" |
55 | echo "Deleted branch $branch_name." | |
56 | done | |
ba65af9c JH |
57 | exit 0 |
58 | } | |
59 | ||
eb777612 | 60 | force= |
ba65af9c JH |
61 | while case "$#,$1" in 0,*) break ;; *,-*) ;; *) break ;; esac |
62 | do | |
63 | case "$1" in | |
64 | -d | -D) | |
03feddd6 | 65 | delete_branch "$@" |
ba65af9c JH |
66 | exit |
67 | ;; | |
eb777612 JH |
68 | -f) |
69 | force="$1" | |
70 | ;; | |
ba65af9c JH |
71 | --) |
72 | shift | |
73 | break | |
74 | ;; | |
75 | -*) | |
76 | usage | |
77 | ;; | |
78 | esac | |
79 | shift | |
80 | done | |
81 | ||
e4aec26f KV |
82 | case "$#" in |
83 | 0) | |
e4aec26f KV |
84 | git-rev-parse --symbolic --all | |
85 | sed -ne 's|^refs/heads/||p' | | |
86 | sort | | |
87 | while read ref | |
88 | do | |
89 | if test "$headref" = "$ref" | |
90 | then | |
91 | pfx='*' | |
92 | else | |
93 | pfx=' ' | |
94 | fi | |
95 | echo "$pfx $ref" | |
96 | done | |
97 | exit 0 ;; | |
98 | 1) | |
a38e7279 | 99 | head=HEAD ;; |
e4aec26f | 100 | 2) |
a38e7279 JH |
101 | head="$2^0" ;; |
102 | esac | |
e4aec26f | 103 | branchname="$1" |
a3b427b9 | 104 | |
ff84d327 | 105 | rev=$(git-rev-parse --verify "$head") || exit |
37f1a519 | 106 | |
03feddd6 JH |
107 | git-check-ref-format "heads/$branchname" || |
108 | die "we do not like '$branchname' as a branch name." | |
37f1a519 | 109 | |
eb777612 JH |
110 | if [ -e "$GIT_DIR/refs/heads/$branchname" ] |
111 | then | |
112 | if test '' = "$force" | |
113 | then | |
114 | die "$branchname already exists." | |
115 | elif test "$branchname" = "$headref" | |
116 | then | |
117 | die "cannot force-update the current branch." | |
118 | fi | |
119 | fi | |
08db81a9 | 120 | git update-ref "refs/heads/$branchname" $rev |