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         if test -z "${GIT_EDITOR:+set}"
 103         then
 104                 GIT_EDITOR="$(git var GIT_EDITOR)" || return $?
 105         fi
 106
 107         eval "$GIT_EDITOR" '"$@"'
 108 }
 109
 110 git_pager() {
 111         if test -t 1
 112         then
 113                 GIT_PAGER=$(git var GIT_PAGER)
 114         else
 115                 GIT_PAGER=cat
 116         fi
 117         : ${LESS=-FRSX}
 118         export LESS
 119
 120         eval "$GIT_PAGER" '"$@"'
 121 }
 122
 123 sane_grep () {
 124         GREP_OPTIONS= LC_ALL=C grep "$@"
 125 }
 126
 127 sane_egrep () {
 128         GREP_OPTIONS= LC_ALL=C egrep "$@"
 129 }
 130
 131 is_bare_repository () {
 132         git rev-parse --is-bare-repository
 133 }
 134
 135 cd_to_toplevel () {
 136         cdup=$(git rev-parse --show-toplevel) &&
 137         cd "$cdup" || {
 138                 echo >&2 "Cannot chdir to $cdup, the toplevel of the working tree"
 139                 exit 1
 140         }
 141 }
 142
 143 require_work_tree_exists () {
 144         if test "z$(git rev-parse --is-bare-repository)" != zfalse
 145         then
 146                 die "fatal: $0 cannot be used without a working tree."
 147         fi
 148 }
 149
 150 require_work_tree () {
 151         test "$(git rev-parse --is-inside-work-tree 2>/dev/null)" = true ||
 152         die "fatal: $0 cannot be used without a working tree."
 153 }
 154
 155 require_clean_work_tree () {
 156         git rev-parse --verify HEAD >/dev/null || exit 1
 157         git update-index -q --ignore-submodules --refresh
 158         err=0
 159
 160         if ! git diff-files --quiet --ignore-submodules
 161         then
 162                 echo >&2 "Cannot $1: You have unstaged changes."
 163                 err=1
 164         fi
 165
 166         if ! git diff-index --cached --quiet --ignore-submodules HEAD --
 167         then
 168                 if [ $err = 0 ]
 169                 then
 170                     echo >&2 "Cannot $1: Your index contains uncommitted changes."
 171                 else
 172                     echo >&2 "Additionally, your index contains uncommitted changes."
 173                 fi
 174                 err=1
 175         fi
 176
 177         if [ $err = 1 ]
 178         then
 179                 test -n "$2" && echo >&2 "$2"
 180                 exit 1
 181         fi
 182 }
 183
 184 get_author_ident_from_commit () {
 185         pick_author_script='
 186         /^author /{
 187                 s/'\''/'\''\\'\'\''/g
 188                 h
 189                 s/^author \([^<]*\) <[^>]*> .*$/\1/
 190                 s/.*/GIT_AUTHOR_NAME='\''&'\''/p
 191
 192                 g
 193                 s/^author [^<]* <\([^>]*\)> .*$/\1/
 194                 s/.*/GIT_AUTHOR_EMAIL='\''&'\''/p
 195
 196                 g
 197                 s/^author [^<]* <[^>]*> \(.*\)$/\1/
 198                 s/.*/GIT_AUTHOR_DATE='\''&'\''/p
 199
 200                 q
 201         }
 202         '
 203         encoding=$(git config i18n.commitencoding || echo UTF-8)
 204         git show -s --pretty=raw --encoding="$encoding" "$1" -- |
 205         LANG=C LC_ALL=C sed -ne "$pick_author_script"
 206 }
 207
 208 # Clear repo-local GIT_* environment variables. Useful when switching to
 209 # another repository (e.g. when entering a submodule). See also the env
 210 # list in git_connect()
 211 clear_local_git_env() {
 212         unset $(git rev-parse --local-env-vars)
 213 }
 214
 215 # Make sure we are in a valid repository of a vintage we understand,
 216 # if we require to be in a git repository.
 217 if test -z "$NONGIT_OK"
 218 then
 219         GIT_DIR=$(git rev-parse --git-dir) || exit
 220         if [ -z "$SUBDIRECTORY_OK" ]
 221         then
 222                 test -z "$(git rev-parse --show-cdup)" || {
 223                         exit=$?
 224                         echo >&2 "You need to run this command from the toplevel of the working tree."
 225                         exit $exit
 226                 }
 227         fi
 228         test -n "$GIT_DIR" && GIT_DIR=$(cd "$GIT_DIR" && pwd) || {
 229                 echo >&2 "Unable to determine absolute path of git directory"
 230                 exit 1
 231         }
 232         : ${GIT_OBJECT_DIRECTORY="$GIT_DIR/objects"}
 233 fi
 234
 235 # Fix some commands on Windows
 236 case $(uname -s) in
 237 *MINGW*)
 238         # Windows has its own (incompatible) sort and find
 239         sort () {
 240                 /usr/bin/sort "$@"
 241         }
 242         find () {
 243                 /usr/bin/find "$@"
 244         }
 245         is_absolute_path () {
 246                 case "$1" in
 247                 [/\\]* | [A-Za-z]:*)
 248                         return 0 ;;
 249                 esac
 250                 return 1
 251         }
 252         ;;
 253 *)
 254         is_absolute_path () {
 255                 case "$1" in
 256                 /*)
 257                         return 0 ;;
 258                 esac
 259                 return 1
 260         }
 261 esac