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# This shell scriplet is meant to be included by other shell scripts
# to set up some variables pointing at the normal git directories and
# a few helper shell functions.
# 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.
# But we protect ourselves from such a user mistake nevertheless.
unset CDPATH
# Similarly for IFS, but some shells (e.g. FreeBSD 7.2) are buggy and
# do not equate an unset IFS with IFS with the default, so here is
# an explicit SP HT LF.
IFS='
'
git_broken_path_fix () {
case ":$PATH:" in
*:$1:*) : ok ;;
*)
PATH=$(
SANE_TOOL_PATH="$1"
IFS=: path= sep=
set x $PATH
shift
for elem
do
case "$SANE_TOOL_PATH:$elem" in
(?*:/bin | ?*:/usr/bin)
path="$path$sep$SANE_TOOL_PATH"
sep=:
SANE_TOOL_PATH=
esac
path="$path$sep$elem"
sep=:
done
echo "$path"
)
;;
esac
}
# Source git-sh-i18n for gettext support.
. "$(git --exec-path)/git-sh-i18n"
die () {
die_with_status 1 "$@"
}
die_with_status () {
status=$1
shift
printf >&2 '%s\n' "$*"
exit "$status"
}
GIT_QUIET=
say () {
if test -z "$GIT_QUIET"
then
printf '%s\n' "$*"
fi
}
if test -n "$OPTIONS_SPEC"; then
usage() {
"$0" -h
exit 1
}
parseopt_extra=
[ -n "$OPTIONS_KEEPDASHDASH" ] &&
parseopt_extra="--keep-dashdash"
[ -n "$OPTIONS_STUCKLONG" ] &&
parseopt_extra="$parseopt_extra --stuck-long"
eval "$(
echo "$OPTIONS_SPEC" |
git rev-parse --parseopt $parseopt_extra -- "$@" ||
echo exit $?
)"
else
dashless=$(basename -- "$0" | sed -e 's/-/ /')
usage() {
die "$(eval_gettext "usage: \$dashless \$USAGE")"
}
if [ -z "$LONG_USAGE" ]
then
LONG_USAGE="$(eval_gettext "usage: \$dashless \$USAGE")"
else
LONG_USAGE="$(eval_gettext "usage: \$dashless \$USAGE
$LONG_USAGE")"
fi
case "$1" in
-h)
echo "$LONG_USAGE"
exit
esac
fi
# Set the name of the end-user facing command in the reflog when the
# script may update refs. When GIT_REFLOG_ACTION is already set, this
# will not overwrite it, so that a scripted Porcelain (e.g. "git
# rebase") can set it to its own name (e.g. "rebase") and then call
# another scripted Porcelain (e.g. "git am") and a call to this
# function in the latter will keep the name of the end-user facing
# program (e.g. "rebase") in GIT_REFLOG_ACTION, ensuring whatever it
# does will be record as actions done as part of the end-user facing
# operation (e.g. "rebase").
#
# NOTE NOTE NOTE: consequently, after assigning a specific message to
# GIT_REFLOG_ACTION when calling a "git" command to record a custom
# reflog message, do not leave that custom value in GIT_REFLOG_ACTION,
# after you are done. Other callers of "git" commands that rely on
# writing the default "program name" in reflog expect the variable to
# contain the value set by this function.
#
# To use a custom reflog message, do either one of these three:
#
# (a) use a single-shot export form:
# GIT_REFLOG_ACTION="$GIT_REFLOG_ACTION: preparing frotz" \
# git command-that-updates-a-ref
#
# (b) save the original away and restore:
# SAVED_ACTION=$GIT_REFLOG_ACTION
# GIT_REFLOG_ACTION="$GIT_REFLOG_ACTION: preparing frotz"
# git command-that-updates-a-ref
# GIT_REFLOG_ACITON=$SAVED_ACTION
#
# (c) assign the variable in a subshell:
# (
# GIT_REFLOG_ACTION="$GIT_REFLOG_ACTION: preparing frotz"
# git command-that-updates-a-ref
# )
set_reflog_action() {
if [ -z "${GIT_REFLOG_ACTION:+set}" ]
then
GIT_REFLOG_ACTION="$*"
export GIT_REFLOG_ACTION
fi
}
git_editor() {
if test -z "${GIT_EDITOR:+set}"
then
GIT_EDITOR="$(git var GIT_EDITOR)" || return $?
fi
eval "$GIT_EDITOR" '"$@"'
}
git_pager() {
if test -t 1
then
GIT_PAGER=$(git var GIT_PAGER)
else
GIT_PAGER=cat
fi
for vardef in LESS=FRX LV=-c
do
var=${vardef%%=*}
eval ": \"\${$vardef}\" && export $var"
done
eval "$GIT_PAGER" '"$@"'
}
sane_grep () {
GREP_OPTIONS= LC_ALL=C grep -a "$@"
}
sane_egrep () {
GREP_OPTIONS= LC_ALL=C egrep -a "$@"
}
is_bare_repository () {
git rev-parse --is-bare-repository
}
cd_to_toplevel () {
cdup=$(git rev-parse --show-toplevel) &&
cd "$cdup" || {
gettextln "Cannot chdir to \$cdup, the toplevel of the working tree" >&2
exit 1
}
}
require_work_tree_exists () {
if test "z$(git rev-parse --is-bare-repository)" != zfalse
then
program_name=$0
die "$(eval_gettext "fatal: \$program_name cannot be used without a working tree.")"
fi
}
require_work_tree () {
test "$(git rev-parse --is-inside-work-tree 2>/dev/null)" = true || {
program_name=$0
die "$(eval_gettext "fatal: \$program_name cannot be used without a working tree.")"
}
}
require_clean_work_tree () {
git rev-parse --verify HEAD >/dev/null || exit 1
git update-index -q --ignore-submodules --refresh
err=0
if ! git diff-files --quiet --ignore-submodules
then
action=$1
case "$action" in
rebase)
gettextln "Cannot rebase: You have unstaged changes." >&2
;;
"rewrite branches")
gettextln "Cannot rewrite branches: You have unstaged changes." >&2
;;
"pull with rebase")
gettextln "Cannot pull with rebase: You have unstaged changes." >&2
;;
*)
eval_gettextln "Cannot \$action: You have unstaged changes." >&2
;;
esac
err=1
fi
if ! git diff-index --cached --quiet --ignore-submodules HEAD --
then
if test $err = 0
then
action=$1
case "$action" in
rebase)
gettextln "Cannot rebase: Your index contains uncommitted changes." >&2
;;
"pull with rebase")
gettextln "Cannot pull with rebase: Your index contains uncommitted changes." >&2
;;
*)
eval_gettextln "Cannot \$action: Your index contains uncommitted changes." >&2
;;
esac
else
gettextln "Additionally, your index contains uncommitted changes." >&2
fi
err=1
fi
if test $err = 1
then
test -n "$2" && echo "$2" >&2
exit 1
fi
}
# Generate a sed script to parse identities from a commit.
#
# Reads the commit from stdin, which should be in raw format (e.g., from
# cat-file or "--pretty=raw").
#
# The first argument specifies the ident line to parse (e.g., "author"), and
# the second specifies the environment variable to put it in (e.g., "AUTHOR"
# for "GIT_AUTHOR_*"). Multiple pairs can be given to parse author and
# committer.
pick_ident_script () {
while test $# -gt 0
do
lid=$1; shift
uid=$1; shift
printf '%s' "
/^$lid /{
s/'/'\\\\''/g
h
s/^$lid "'\([^<]*\) <[^>]*> .*$/\1/'"
s/.*/GIT_${uid}_NAME='&'/p
g
s/^$lid "'[^<]* <\([^>]*\)> .*$/\1/'"
s/.*/GIT_${uid}_EMAIL='&'/p
g
s/^$lid "'[^<]* <[^>]*> \(.*\)$/@\1/'"
s/.*/GIT_${uid}_DATE='&'/p
}
"
done
echo '/^$/q'
}
# Create a pick-script as above and feed it to sed. Stdout is suitable for
# feeding to eval.
parse_ident_from_commit () {
LANG=C LC_ALL=C sed -ne "$(pick_ident_script "$@")"
}
# Parse the author from a commit given as an argument. Stdout is suitable for
# feeding to eval to set the usual GIT_* ident variables.
get_author_ident_from_commit () {
encoding=$(git config i18n.commitencoding || echo UTF-8)
git show -s --pretty=raw --encoding="$encoding" "$1" -- |
parse_ident_from_commit author AUTHOR
}
# Clear repo-local GIT_* environment variables. Useful when switching to
# another repository (e.g. when entering a submodule). See also the env
# list in git_connect()
clear_local_git_env() {
unset $(git rev-parse --local-env-vars)
}
# Generate a virtual base file for a two-file merge. Uses git apply to
# remove lines from $1 that are not in $2, leaving only common lines.
create_virtual_base() {
sz0=$(wc -c <"$1")
diff -u -La/"$1" -Lb/"$1" "$1" "$2" | git apply --no-add
sz1=$(wc -c <"$1")
# If we do not have enough common material, it is not
# worth trying two-file merge using common subsections.
expr $sz0 \< $sz1 \* 2 >/dev/null || : >"$1"
}
# Platform specific tweaks to work around some commands
case $(uname -s) in
*MINGW*)
# Windows has its own (incompatible) sort and find
sort () {
/usr/bin/sort "$@"
}
find () {
/usr/bin/find "$@"
}
# git sees Windows-style pwd
pwd () {
builtin pwd -W
}
is_absolute_path () {
case "$1" in
[/\\]* | [A-Za-z]:*)
return 0 ;;
esac
return 1
}
;;
*)
is_absolute_path () {
case "$1" in
/*)
return 0 ;;
esac
return 1
}
esac
# Make sure we are in a valid repository of a vintage we understand,
# if we require to be in a git repository.
git_dir_init () {
GIT_DIR=$(git rev-parse --git-dir) || exit
if [ -z "$SUBDIRECTORY_OK" ]
then
test -z "$(git rev-parse --show-cdup)" || {
exit=$?
gettextln "You need to run this command from the toplevel of the working tree." >&2
exit $exit
}
fi
test -n "$GIT_DIR" && GIT_DIR=$(cd "$GIT_DIR" && pwd) || {
gettextln "Unable to determine absolute path of git directory" >&2
exit 1
}
: "${GIT_OBJECT_DIRECTORY="$(git rev-parse --git-path objects)"}"
}
if test -z "$NONGIT_OK"
then
git_dir_init
fi
peel_committish () {
case "$1" in
:/*)
peeltmp=$(git rev-parse --verify "$1") &&
git rev-parse --verify "${peeltmp}^0"
;;
*)
git rev-parse --verify "${1}^0"
;;
esac
}
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