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git/git-sh-setup.sh
Stephan Beyer 1b1dd23f2d Make usage strings dash-less
When you misuse a git command, you are shown the usage string.
But this is currently shown in the dashed form.  So if you just
copy what you see, it will not work, when the dashed form
is no longer supported.

This patch makes git commands show the dash-less version.

For shell scripts that do not specify OPTIONS_SPEC, git-sh-setup.sh
generates a dash-less usage string now.

Signed-off-by: Stephan Beyer <s-beyer@gmx.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-13 14:12:48 -07:00

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#!/bin/sh
#
# This is included in commands that either have to be run from the toplevel
# of the repository, or with GIT_DIR environment variable properly.
# If the GIT_DIR does not look like the right correct git-repository,
# it dies.
# Having this variable in your environment would break scripts because
# you would cause "cd" to be taken to unexpected places. If you
# like CDPATH, define it for your interactive shell sessions without
# exporting it.
unset CDPATH
die() {
echo >&2 "$@"
exit 1
}
if test -n "$OPTIONS_SPEC"; then
usage() {
"$0" -h
exit 1
}
parseopt_extra=
[ -n "$OPTIONS_KEEPDASHDASH" ] &&
parseopt_extra="--keep-dashdash"
eval "$(
echo "$OPTIONS_SPEC" |
git rev-parse --parseopt $parseopt_extra -- "$@" ||
echo exit $?
)"
else
dashless=$(basename "$0" | sed -e 's/-/ /')
usage() {
die "Usage: $dashless $USAGE"
}
if [ -z "$LONG_USAGE" ]
then
LONG_USAGE="Usage: $dashless $USAGE"
else
LONG_USAGE="Usage: $dashless $USAGE
$LONG_USAGE"
fi
case "$1" in
-h|--h|--he|--hel|--help)
echo "$LONG_USAGE"
exit
esac
fi
set_reflog_action() {
if [ -z "${GIT_REFLOG_ACTION:+set}" ]
then
GIT_REFLOG_ACTION="$*"
export GIT_REFLOG_ACTION
fi
}
git_editor() {
: "${GIT_EDITOR:=$(git config core.editor)}"
: "${GIT_EDITOR:=${VISUAL:-${EDITOR}}}"
case "$GIT_EDITOR,$TERM" in
,dumb)
echo >&2 "No editor specified in GIT_EDITOR, core.editor, VISUAL,"
echo >&2 "or EDITOR. Tried to fall back to vi but terminal is dumb."
echo >&2 "Please set one of these variables to an appropriate"
echo >&2 "editor or run $0 with options that will not cause an"
echo >&2 "editor to be invoked (e.g., -m or -F for git-commit)."
exit 1
;;
esac
eval "${GIT_EDITOR:=vi}" '"$@"'
}
is_bare_repository () {
git rev-parse --is-bare-repository
}
cd_to_toplevel () {
cdup=$(git rev-parse --show-cdup)
if test ! -z "$cdup"
then
cd "$cdup" || {
echo >&2 "Cannot chdir to $cdup, the toplevel of the working tree"
exit 1
}
fi
}
require_work_tree () {
test $(git rev-parse --is-inside-work-tree) = true ||
die "fatal: $0 cannot be used without a working tree."
}
get_author_ident_from_commit () {
pick_author_script='
/^author /{
s/'\''/'\''\\'\'\''/g
h
s/^author \([^<]*\) <[^>]*> .*$/\1/
s/'\''/'\''\'\'\''/g
s/.*/GIT_AUTHOR_NAME='\''&'\''/p
g
s/^author [^<]* <\([^>]*\)> .*$/\1/
s/'\''/'\''\'\'\''/g
s/.*/GIT_AUTHOR_EMAIL='\''&'\''/p
g
s/^author [^<]* <[^>]*> \(.*\)$/\1/
s/'\''/'\''\'\'\''/g
s/.*/GIT_AUTHOR_DATE='\''&'\''/p
q
}
'
encoding=$(git config i18n.commitencoding || echo UTF-8)
git show -s --pretty=raw --encoding="$encoding" "$1" -- |
LANG=C LC_ALL=C sed -ne "$pick_author_script"
}
# Make sure we are in a valid repository of a vintage we understand,
# if we require to be in a git repository.
if test -z "$NONGIT_OK"
then
GIT_DIR=$(git rev-parse --git-dir) || exit
if [ -z "$SUBDIRECTORY_OK" ]
then
test -z "$(git rev-parse --show-cdup)" || {
exit=$?
echo >&2 "You need to run this command from the toplevel of the working tree."
exit $exit
}
fi
test -n "$GIT_DIR" && GIT_DIR=$(cd "$GIT_DIR" && pwd) || {
echo >&2 "Unable to determine absolute path of git directory"
exit 1
}
: ${GIT_OBJECT_DIRECTORY="$GIT_DIR/objects"}
fi
# Fix some commands on Windows
case $(uname -s) in
*MINGW*)
# Windows has its own (incompatible) sort and find
sort () {
/usr/bin/sort "$@"
}
find () {
/usr/bin/find "$@"
}
;;
esac