bin/git-ps1

   1 #!/usr/bin/env bash
   2 r=
   3 b=
   4 g="$(git rev-parse --git-dir 2>/dev/null)"
   5
   6 if [ -n "$g" ]; then
   7     if [ -d "$g/../.dotest" ]
   8         then
   9         if test -f "$g/../.dotest/rebasing"
  10             then
  11             r="|REBASE"
  12         elif test -f "$g/../.dotest/applying"
  13             then
  14             r="|AM"
  15         else
  16             r="|AM/REBASE"
  17         fi
  18         b="$(git symbolic-ref HEAD 2>/dev/null)"
  19     elif [ -f "$g/.dotest-merge/interactive" ]
  20         then
  21         r="|REBASE-i"
  22         b="$(cat "$g/.dotest-merge/head-name")"
  23     elif [ -d "$g/.dotest-merge" ]
  24         then
  25         r="|REBASE-m"
  26         b="$(cat "$g/.dotest-merge/head-name")"
  27     elif [ -f "$g/MERGE_HEAD" ]
  28         then
  29         r="|MERGING"
  30         b="$(git symbolic-ref HEAD 2>/dev/null)"
  31     else
  32         if [ -f "$g/BISECT_LOG" ]
  33             then
  34             r="|BISECTING"
  35         fi
  36         if ! b="$(git symbolic-ref HEAD 2>/dev/null)"
  37             then
  38             if ! b="$(git describe --exact-match HEAD 2>/dev/null)"
  39                 then
  40                 b="$(cut -c1-7 "$g/HEAD")..."
  41             fi
  42         fi
  43     fi
  44
  45     if [ -n "$1" ]; then
  46         printf "$1" "${b##refs/heads/}$r"
  47     else
  48         printf "%s" "${b##refs/heads/}$r"
  49     fi
  50 else
  51     printf "not-in-git"
  52 fi