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 git_broken_path_fix () {
  15         case ":$PATH:" in
  16         *:$1:*) : ok ;;
  17         *)
  18                 PATH=$(
  19                         SANE_TOOL_PATH="$1"
  20                         IFS=: path= sep=
  21                         set x $PATH
  22                         shift
  23                         for elem
  24                         do
  25                                 case "$SANE_TOOL_PATH:$elem" in
  26                                 (?*:/bin | ?*:/usr/bin)
  27                                         path="$path$sep$SANE_TOOL_PATH"
  28                                         sep=:
  29                                         SANE_TOOL_PATH=
  30                                 esac
  31                                 path="$path$sep$elem"
  32                                 sep=:
  33                         done
  34                         echo "$path"
  35                 )
  36                 ;;
  37         esac
  38 }
  39
  40 # @@BROKEN_PATH_FIX@@
  41
  42 die() {
  43         echo >&2 "$@"
  44         exit 1
  45 }
  46
  47 if test -n "$OPTIONS_SPEC"; then
  48         usage() {
  49                 "$0" -h
  50                 exit 1
  51         }
  52
  53         parseopt_extra=
  54         [ -n "$OPTIONS_KEEPDASHDASH" ] &&
  55                 parseopt_extra="--keep-dashdash"
  56
  57         eval "$(
  58                 echo "$OPTIONS_SPEC" |
  59                         git rev-parse --parseopt $parseopt_extra -- "$@" ||
  60                 echo exit $?
  61         )"
  62 else
  63         dashless=$(basename "$0" | sed -e 's/-/ /')
  64         usage() {
  65                 die "Usage: $dashless $USAGE"
  66         }
  67
  68         if [ -z "$LONG_USAGE" ]
  69         then
  70                 LONG_USAGE="Usage: $dashless $USAGE"
  71         else
  72                 LONG_USAGE="Usage: $dashless $USAGE
  73
  74 $LONG_USAGE"
  75         fi
  76
  77         case "$1" in
  78                 -h|--h|--he|--hel|--help)
  79                 echo "$LONG_USAGE"
  80                 exit
  81         esac
  82 fi
  83
  84 set_reflog_action() {
  85         if [ -z "${GIT_REFLOG_ACTION:+set}" ]
  86         then
  87                 GIT_REFLOG_ACTION="$*"
  88                 export GIT_REFLOG_ACTION
  89         fi
  90 }
  91
  92 git_editor() {
  93         : "${GIT_EDITOR:=$(git config core.editor)}"
  94         : "${GIT_EDITOR:=${VISUAL:-${EDITOR}}}"
  95         case "$GIT_EDITOR,$TERM" in
  96         ,dumb)
  97                 echo >&2 "No editor specified in GIT_EDITOR, core.editor, VISUAL,"
  98                 echo >&2 "or EDITOR. Tried to fall back to vi but terminal is dumb."
  99                 echo >&2 "Please set one of these variables to an appropriate"
 100                 echo >&2 "editor or run $0 with options that will not cause an"
 101                 echo >&2 "editor to be invoked (e.g., -m or -F for git-commit)."
 102                 exit 1
 103                 ;;
 104         esac
 105         eval "${GIT_EDITOR:=vi}" '"$@"'
 106 }
 107
 108 is_bare_repository () {
 109         git rev-parse --is-bare-repository
 110 }
 111
 112 cd_to_toplevel () {
 113         cdup=$(git rev-parse --show-cdup)
 114         if test ! -z "$cdup"
 115         then
 116                 # The "-P" option says to follow "physical" directory
 117                 # structure instead of following symbolic links.  When cdup is
 118                 # "../", this means following the ".." entry in the current
 119                 # directory instead textually removing a symlink path element
 120                 # from the PWD shell variable.  The "-P" behavior is more
 121                 # consistent with the C-style chdir used by most of Git.
 122                 cd -P "$cdup" || {
 123                         echo >&2 "Cannot chdir to $cdup, the toplevel of the working tree"
 124                         exit 1
 125                 }
 126         fi
 127 }
 128
 129 require_work_tree () {
 130         test $(git rev-parse --is-inside-work-tree) = true ||
 131         die "fatal: $0 cannot be used without a working tree."
 132 }
 133
 134 get_author_ident_from_commit () {
 135         pick_author_script='
 136         /^author /{
 137                 s/'\''/'\''\\'\'\''/g
 138                 h
 139                 s/^author \([^<]*\) <[^>]*> .*$/\1/
 140                 s/'\''/'\''\'\'\''/g
 141                 s/.*/GIT_AUTHOR_NAME='\''&'\''/p
 142
 143                 g
 144                 s/^author [^<]* <\([^>]*\)> .*$/\1/
 145                 s/'\''/'\''\'\'\''/g
 146                 s/.*/GIT_AUTHOR_EMAIL='\''&'\''/p
 147
 148                 g
 149                 s/^author [^<]* <[^>]*> \(.*\)$/\1/
 150                 s/'\''/'\''\'\'\''/g
 151                 s/.*/GIT_AUTHOR_DATE='\''&'\''/p
 152
 153                 q
 154         }
 155         '
 156         encoding=$(git config i18n.commitencoding || echo UTF-8)
 157         git show -s --pretty=raw --encoding="$encoding" "$1" -- |
 158         LANG=C LC_ALL=C sed -ne "$pick_author_script"
 159 }
 160
 161 # Make sure we are in a valid repository of a vintage we understand,
 162 # if we require to be in a git repository.
 163 if test -z "$NONGIT_OK"
 164 then
 165         GIT_DIR=$(git rev-parse --git-dir) || exit
 166         if [ -z "$SUBDIRECTORY_OK" ]
 167         then
 168                 test -z "$(git rev-parse --show-cdup)" || {
 169                         exit=$?
 170                         echo >&2 "You need to run this command from the toplevel of the working tree."
 171                         exit $exit
 172                 }
 173         fi
 174         test -n "$GIT_DIR" && GIT_DIR=$(cd "$GIT_DIR" && pwd) || {
 175                 echo >&2 "Unable to determine absolute path of git directory"
 176                 exit 1
 177         }
 178         : ${GIT_OBJECT_DIRECTORY="$GIT_DIR/objects"}
 179 fi
 180
 181 # Fix some commands on Windows
 182 case $(uname -s) in
 183 *MINGW*)
 184         # Windows has its own (incompatible) sort and find
 185         sort () {
 186                 /usr/bin/sort "$@"
 187         }
 188         find () {
 189                 /usr/bin/find "$@"
 190         }
 191         ;;
 192 esac