git-delete-old-branches

   1 #!/usr/bin/env bash
   2
   3 #=======================================================================
   4 # git-delete-old-branches
   5 # File ID: b2a8aec0-3649-11e6-912b-02010e0a6634
   6 #
   7 # Delete obsolete Git branches after displaying some info about them
   8 #
   9 # Author: Øyvind A. Holm <sunny@sunbase.org>
  10 # License: GNU General Public License version 2 or later.
  11 #=======================================================================
  12
  13 progname=git-delete-old-branches
  14 VERSION=0.7.0
  15
  16 ARGS="$(getopt -o "\
  17 d:\
  18 h\
  19 l\
  20 o\
  21 q\
  22 v\
  23 " -l "\
  24 dbname:,\
  25 help,\
  26 load,\
  27 once,\
  28 quiet,\
  29 verbose,\
  30 version,\
  31 " -n "$progname" -- "$@")"
  32 test "$?" = "0" || exit 1
  33 eval set -- "$ARGS"
  34
  35 opt_dbname=''
  36 opt_help=0
  37 opt_load=0
  38 opt_once=0
  39 opt_quiet=0
  40 opt_verbose=0
  41 while :; do
  42     case "$1" in
  43         -d|--dbname) opt_dbname="$2"; shift 2 ;;
  44         -h|--help) opt_help=1; shift ;;
  45         -l|--load) opt_load=1; shift ;;
  46         -o|--once) opt_once=1; shift ;;
  47         -q|--quiet) opt_quiet=$(($opt_quiet + 1)); shift ;;
  48         -v|--verbose) opt_verbose=$(($opt_verbose + 1)); shift ;;
  49         --version) echo $progname $VERSION; exit 0 ;;
  50         --) shift; break ;;
  51         *) echo $progname: Internal error >&2; exit 1 ;;
  52     esac
  53 done
  54 opt_verbose=$(($opt_verbose - $opt_quiet))
  55
  56 if test "$opt_help" = "1"; then
  57     test $opt_verbose -gt 0 && { echo; echo $progname $VERSION; }
  58     cat <<END
  59
  60 Delete obsolete Git branches locally and from all remotes. For each
  61 branch, display a "git diff --stat" against all local and remote
  62 branches with this name, a simplified --graph log, and finally a git log
  63 with patch against all branches. Display this in less(1), and ask if all
  64 branches with this name should be deleted.
  65 The following responses are valid:
  66
  67 "y" - Delete all branches with this name locally and from all remotes
  68       and mark it as garbage.
  69 "n" - Don't delete the branch. If -o/--once is used later, files marked
  70       with "n" will not be checked.
  71 "d" - Mark branch as "don't know", to be perused later.
  72 "q" - Exit the program.
  73
  74 Usage: $progname [options] BRANCH [BRANCH [...]]
  75
  76 Options:
  77
  78   -d FILE, --dbname FILE
  79     Store answers in the SQLite database FILE. Can be used to automate
  80     deletions later.
  81   -h, --help
  82     Show this help.
  83   -l, --load
  84     Store the specified branches in the "refs" database table along with
  85     the commit date. This makes it possible to sort the branches by age.
  86     Must be used together with the -d/--dbname option. If -v is
  87     specified, progress is shown while the branches are stored.
  88   -o, --once
  89     Don't ask about branches that have been answered "n" to earlier.
  90   -q, --quiet
  91     Be more quiet. Can be repeated to increase silence.
  92   -v, --verbose
  93     Increase level of verbosity. Can be repeated.
  94   --version
  95     Print version information.
  96
  97 END
  98     exit 0
  99 fi
 100
 101 db="$opt_dbname"
 102 dbversion=1
 103
 104 listbr() {
 105     git br -a | rmspcall | grep -E "(^|/)$1\$"
 106 }
 107
 108 sql() {
 109     test -z "$db" && return
 110     echo "$@" | sqlite3 "$db"
 111 }
 112
 113 add_entry() {
 114     sql "
 115 INSERT OR REPLACE
 116   INTO branches (yn, branch, date)
 117   VALUES('$1', '$2', datetime('now'));
 118 "
 119 }
 120
 121 sql "
 122 BEGIN TRANSACTION;
 123 CREATE TABLE IF NOT EXISTS branches (
 124   yn TEXT
 125     CONSTRAINT branches_yn_contents
 126       CHECK (yn = 'y' OR yn = 'n' OR yn = 'd' OR yn IS NULL),
 127   branch TEXT
 128     CONSTRAINT branches_branch_length
 129       CHECK (length(branch) > 0)
 130     UNIQUE
 131     NOT NULL,
 132   date TEXT
 133     DEFAULT (datetime('now'))
 134     CONSTRAINT branches_date_length
 135       CHECK (date IS NULL OR length(date) = 19)
 136     CONSTRAINT branches_date_valid
 137       CHECK (date IS NULL OR datetime(date) IS NOT NULL)
 138 );
 139 CREATE TABLE IF NOT EXISTS meta (
 140   key TEXT
 141     CONSTRAINT meta_key_length
 142       CHECK (length(key) > 0)
 143     UNIQUE
 144     NOT NULL,
 145   value TEXT
 146 );
 147 INSERT OR IGNORE INTO meta (key, value)
 148   VALUES('program', 'git-delete-old-branches');
 149 INSERT OR IGNORE INTO meta (key, value)
 150   VALUES('url',
 151    'https://gitlab.com/sunny256/utils/blob/master/git-delete-old-branches');
 152 INSERT OR IGNORE INTO meta (key, value)
 153   VALUES('dbversion', '$dbversion');
 154 CREATE TABLE IF NOT EXISTS refs (
 155   date TEXT
 156     CONSTRAINT refs_date_length
 157       CHECK (date IS NULL OR length(date) = 19)
 158     CONSTRAINT refs_date_valid
 159       CHECK (date IS NULL OR datetime(date) IS NOT NULL),
 160   branch TEXT
 161     CONSTRAINT refs_branch_length
 162       CHECK (length(branch) > 0)
 163     UNIQUE
 164     NOT NULL
 165 );
 166 COMMIT;
 167 "
 168
 169 if test "$opt_load" = "1" -a -z "$opt_dbname"; then
 170     echo $progname: -l/--load doesn\'t work without -d/--dbname >&2
 171     exit 1
 172 fi
 173
 174 currversion=$(sql "SELECT value FROM meta WHERE key = 'dbversion';")
 175 if test -n "$currversion"; then
 176     if test $currversion -gt $dbversion; then
 177         (echo $progname: Database version of $db is too new.
 178         echo $progname: The db version is $currversion, and this program can
 179         echo $progname: only handle databases up to version $dbversion.) >&2
 180         exit 1
 181     fi
 182 fi
 183
 184 if test "$opt_load" = "1"; then
 185     test $opt_verbose -ge 1 && tput sc >&2
 186     for f in "$@"; do
 187         s="$(echo "$f" | sed "s/'/''/g")"
 188         if test $opt_verbose -ge 1; then
 189             tput rc >&2
 190             echo -n "$f " >&2
 191             tput el >&2
 192         fi
 193         GIT_PAGER=cat git log -1 "$f" \
 194           --format=tformat:"INSERT INTO refs (date, branch) VALUES (datetime('%cI'), '$s');"
 195     done | sqlite3 "$db"
 196     test $opt_verbose -ge 1 && tput rc el >&2
 197     exit
 198 fi
 199
 200 unset LESS
 201
 202 for f in "$@"; do
 203     s="$(echo "$f" | sed "s/'/''/g")"
 204     if test -n "$db" -a "$opt_once" = "1"; then
 205         sql "SELECT branch FROM branches WHERE branch = '$s' AND yn = 'n';" |
 206             grep -q . && continue
 207     fi
 208     if test $opt_verbose -ge 1; then
 209         echo
 210         echo $progname: Check \"$f\" branches
 211         listbr "$f"
 212     fi
 213     listbr "$f" | grep -q . || continue
 214     clear
 215     (
 216         echo $f
 217         echo
 218         git diff --stat $(listbr "$f" | perl -pe 's/^/.../;')
 219         echo
 220         git log -C -C -M -M --abbrev-commit --decorate=short --format=oneline \
 221           --graph $(
 222             listbr "$f" | perl -pe 's/^/../;'
 223         )
 224         echo
 225         git log -C -C -M -M --date-order --date=iso --decorate=short \
 226           --format=fuller --graph -c -p $(listbr "$f" | perl -pe 's/^/../;')
 227     ) | less -S
 228     echo -n "Delete all '$f' branches? " >&2
 229     unset valg
 230     read valg </dev/tty
 231     if test "$valg" = "y"; then
 232         git dbr $(listbr "$f")
 233         add_entry y "$s"
 234     elif test "$valg" = "n"; then
 235         add_entry n "$s"
 236     elif test "$valg" = "d"; then
 237         add_entry d "$s"
 238     elif test "$valg" = "q"; then
 239         exit 0
 240     fi
 241 done