git-sh-setup.sh

   1 #!/bin/sh
   2 #
   3 # This is included in commands that either have to be run from the toplevel
   4 # of the repository, or with GIT_DIR environment variable properly.
   5 # If the GIT_DIR does not look like the right correct git-repository,
   6 # it dies.
   7
   8 # Having this variable in your environment would break scripts because
   9 # you would cause "cd" to be taken to unexpected places.  If you
  10 # like CDPATH, define it for your interactive shell sessions without
  11 # exporting it.
  12 unset CDPATH
  13
  14 die() {
  15         echo >&2 "$@"
  16         exit 1
  17 }
  18
  19 if test -n "$OPTIONS_SPEC"; then
  20         usage() {
  21                 "$0" -h
  22                 exit 1
  23         }
  24
  25         parseopt_extra=
  26         [ -n "$OPTIONS_KEEPDASHDASH" ] &&
  27                 parseopt_extra="--keep-dashdash"
  28
  29         eval "$(
  30                 echo "$OPTIONS_SPEC" |
  31                         git rev-parse --parseopt $parseopt_extra -- "$@" ||
  32                 echo exit $?
  33         )"
  34 else
  35         dashless=$(basename "$0" | sed -e 's/-/ /')
  36         usage() {
  37                 die "Usage: $dashless $USAGE"
  38         }
  39
  40         if [ -z "$LONG_USAGE" ]
  41         then
  42                 LONG_USAGE="Usage: $dashless $USAGE"
  43         else
  44                 LONG_USAGE="Usage: $dashless $USAGE
  45
  46 $LONG_USAGE"
  47         fi
  48
  49         case "$1" in
  50                 -h|--h|--he|--hel|--help)
  51                 echo "$LONG_USAGE"
  52                 exit
  53         esac
  54 fi
  55
  56 set_reflog_action() {
  57         if [ -z "${GIT_REFLOG_ACTION:+set}" ]
  58         then
  59                 GIT_REFLOG_ACTION="$*"
  60                 export GIT_REFLOG_ACTION
  61         fi
  62 }
  63
  64 git_editor() {
  65         : "${GIT_EDITOR:=$(git config core.editor)}"
  66         : "${GIT_EDITOR:=${VISUAL:-${EDITOR}}}"
  67         case "$GIT_EDITOR,$TERM" in
  68         ,dumb)
  69                 echo >&2 "No editor specified in GIT_EDITOR, core.editor, VISUAL,"
  70                 echo >&2 "or EDITOR. Tried to fall back to vi but terminal is dumb."
  71                 echo >&2 "Please set one of these variables to an appropriate"
  72                 echo >&2 "editor or run $0 with options that will not cause an"
  73                 echo >&2 "editor to be invoked (e.g., -m or -F for git-commit)."
  74                 exit 1
  75                 ;;
  76         esac
  77         eval "${GIT_EDITOR:=vi}" '"$@"'
  78 }
  79
  80 is_bare_repository () {
  81         git rev-parse --is-bare-repository
  82 }
  83
  84 cd_to_toplevel () {
  85         cdup=$(git rev-parse --show-cdup)
  86         if test ! -z "$cdup"
  87         then
  88                 cd "$cdup" || {
  89                         echo >&2 "Cannot chdir to $cdup, the toplevel of the working tree"
  90                         exit 1
  91                 }
  92         fi
  93 }
  94
  95 require_work_tree () {
  96         test $(git rev-parse --is-inside-work-tree) = true ||
  97         die "fatal: $0 cannot be used without a working tree."
  98 }
  99
 100 get_author_ident_from_commit () {
 101         pick_author_script='
 102         /^author /{
 103                 s/'\''/'\''\\'\'\''/g
 104                 h
 105                 s/^author \([^<]*\) <[^>]*> .*$/\1/
 106                 s/'\''/'\''\'\'\''/g
 107                 s/.*/GIT_AUTHOR_NAME='\''&'\''/p
 108
 109                 g
 110                 s/^author [^<]* <\([^>]*\)> .*$/\1/
 111                 s/'\''/'\''\'\'\''/g
 112                 s/.*/GIT_AUTHOR_EMAIL='\''&'\''/p
 113
 114                 g
 115                 s/^author [^<]* <[^>]*> \(.*\)$/\1/
 116                 s/'\''/'\''\'\'\''/g
 117                 s/.*/GIT_AUTHOR_DATE='\''&'\''/p
 118
 119                 q
 120         }
 121         '
 122         encoding=$(git config i18n.commitencoding || echo UTF-8)
 123         git show -s --pretty=raw --encoding="$encoding" "$1" -- |
 124         LANG=C LC_ALL=C sed -ne "$pick_author_script"
 125 }
 126
 127 # Make sure we are in a valid repository of a vintage we understand,
 128 # if we require to be in a git repository.
 129 if test -z "$NONGIT_OK"
 130 then
 131         GIT_DIR=$(git rev-parse --git-dir) || exit
 132         if [ -z "$SUBDIRECTORY_OK" ]
 133         then
 134                 test -z "$(git rev-parse --show-cdup)" || {
 135                         exit=$?
 136                         echo >&2 "You need to run this command from the toplevel of the working tree."
 137                         exit $exit
 138                 }
 139         fi
 140         test -n "$GIT_DIR" && GIT_DIR=$(cd "$GIT_DIR" && pwd) || {
 141                 echo >&2 "Unable to determine absolute path of git directory"
 142                 exit 1
 143         }
 144         : ${GIT_OBJECT_DIRECTORY="$GIT_DIR/objects"}
 145 fi
 146
 147 # Fix some commands on Windows
 148 case $(uname -s) in
 149 *MINGW*)
 150         # Windows has its own (incompatible) sort and find
 151         sort () {
 152                 /usr/bin/sort "$@"
 153         }
 154         find () {
 155                 /usr/bin/find "$@"
 156         }
 157         ;;
 158 esac