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 "$@"
  44         exit 1
  45 }
  46
  47 GIT_QUIET=
  48
  49 say () {
  50         if test -z "$GIT_QUIET"
  51         then
  52                 printf '%s\n' "$*"
  53         fi
  54 }
  55
  56 if test -n "$OPTIONS_SPEC"; then
  57         usage() {
  58                 "$0" -h
  59                 exit 1
  60         }
  61
  62         parseopt_extra=
  63         [ -n "$OPTIONS_KEEPDASHDASH" ] &&
  64                 parseopt_extra="--keep-dashdash"
  65
  66         eval "$(
  67                 echo "$OPTIONS_SPEC" |
  68                         git rev-parse --parseopt $parseopt_extra -- "$@" ||
  69                 echo exit $?
  70         )"
  71 else
  72         dashless=$(basename "$0" | sed -e 's/-/ /')
  73         usage() {
  74                 die "Usage: $dashless $USAGE"
  75         }
  76
  77         if [ -z "$LONG_USAGE" ]
  78         then
  79                 LONG_USAGE="Usage: $dashless $USAGE"
  80         else
  81                 LONG_USAGE="Usage: $dashless $USAGE
  82
  83 $LONG_USAGE"
  84         fi
  85
  86         case "$1" in
  87                 -h|--h|--he|--hel|--help)
  88                 echo "$LONG_USAGE"
  89                 exit
  90         esac
  91 fi
  92
  93 set_reflog_action() {
  94         if [ -z "${GIT_REFLOG_ACTION:+set}" ]
  95         then
  96                 GIT_REFLOG_ACTION="$*"
  97                 export GIT_REFLOG_ACTION
  98         fi
  99 }
 100
 101 git_editor() {
 102         : "${GIT_EDITOR:=$(git config core.editor)}"
 103         : "${GIT_EDITOR:=${VISUAL:-${EDITOR}}}"
 104         case "$GIT_EDITOR,$TERM" in
 105         ,dumb)
 106                 echo >&2 "No editor specified in GIT_EDITOR, core.editor, VISUAL,"
 107                 echo >&2 "or EDITOR. Tried to fall back to vi but terminal is dumb."
 108                 echo >&2 "Please set one of these variables to an appropriate"
 109                 echo >&2 "editor or run $0 with options that will not cause an"
 110                 echo >&2 "editor to be invoked (e.g., -m or -F for git-commit)."
 111                 exit 1
 112                 ;;
 113         esac
 114         eval "${GIT_EDITOR:=vi}" '"$@"'
 115 }
 116
 117 sane_grep () {
 118         GREP_OPTIONS= LC_ALL=C grep "$@"
 119 }
 120
 121 sane_egrep () {
 122         GREP_OPTIONS= LC_ALL=C egrep "$@"
 123 }
 124
 125 is_bare_repository () {
 126         git rev-parse --is-bare-repository
 127 }
 128
 129 cd_to_toplevel () {
 130         cdup=$(git rev-parse --show-cdup)
 131         if test ! -z "$cdup"
 132         then
 133                 # The "-P" option says to follow "physical" directory
 134                 # structure instead of following symbolic links.  When cdup is
 135                 # "../", this means following the ".." entry in the current
 136                 # directory instead textually removing a symlink path element
 137                 # from the PWD shell variable.  The "-P" behavior is more
 138                 # consistent with the C-style chdir used by most of Git.
 139                 cd -P "$cdup" || {
 140                         echo >&2 "Cannot chdir to $cdup, the toplevel of the working tree"
 141                         exit 1
 142                 }
 143         fi
 144 }
 145
 146 require_work_tree () {
 147         test $(git rev-parse --is-inside-work-tree) = true ||
 148         die "fatal: $0 cannot be used without a working tree."
 149 }
 150
 151 get_author_ident_from_commit () {
 152         pick_author_script='
 153         /^author /{
 154                 s/'\''/'\''\\'\'\''/g
 155                 h
 156                 s/^author \([^<]*\) <[^>]*> .*$/\1/
 157                 s/'\''/'\''\'\'\''/g
 158                 s/.*/GIT_AUTHOR_NAME='\''&'\''/p
 159
 160                 g
 161                 s/^author [^<]* <\([^>]*\)> .*$/\1/
 162                 s/'\''/'\''\'\'\''/g
 163                 s/.*/GIT_AUTHOR_EMAIL='\''&'\''/p
 164
 165                 g
 166                 s/^author [^<]* <[^>]*> \(.*\)$/\1/
 167                 s/'\''/'\''\'\'\''/g
 168                 s/.*/GIT_AUTHOR_DATE='\''&'\''/p
 169
 170                 q
 171         }
 172         '
 173         encoding=$(git config i18n.commitencoding || echo UTF-8)
 174         git show -s --pretty=raw --encoding="$encoding" "$1" -- |
 175         LANG=C LC_ALL=C sed -ne "$pick_author_script"
 176 }
 177
 178 # Make sure we are in a valid repository of a vintage we understand,
 179 # if we require to be in a git repository.
 180 if test -z "$NONGIT_OK"
 181 then
 182         GIT_DIR=$(git rev-parse --git-dir) || exit
 183         if [ -z "$SUBDIRECTORY_OK" ]
 184         then
 185                 test -z "$(git rev-parse --show-cdup)" || {
 186                         exit=$?
 187                         echo >&2 "You need to run this command from the toplevel of the working tree."
 188                         exit $exit
 189                 }
 190         fi
 191         test -n "$GIT_DIR" && GIT_DIR=$(cd "$GIT_DIR" && pwd) || {
 192                 echo >&2 "Unable to determine absolute path of git directory"
 193                 exit 1
 194         }
 195         : ${GIT_OBJECT_DIRECTORY="$GIT_DIR/objects"}
 196 fi
 197
 198 # Fix some commands on Windows
 199 case $(uname -s) in
 200 *MINGW*)
 201         # Windows has its own (incompatible) sort and find
 202         sort () {
 203                 /usr/bin/sort "$@"
 204         }
 205         find () {
 206                 /usr/bin/find "$@"
 207         }
 208         ;;
 209 esac