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