# 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

}

# @@BROKEN_PATH_FIX@@

# 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 @@PAGER_ENV@@

	do

		var=${vardef%%=*}

		eval ": \"\${$vardef}\" && export $var"

	done

	eval "$GIT_PAGER" '"$@"'

}

sane_grep () {

	GREP_OPTIONS= LC_ALL=C grep @@SANE_TEXT_GREP@@ "$@"

}

sane_egrep () {

	GREP_OPTIONS= LC_ALL=C egrep @@SANE_TEXT_GREP@@ "$@"

}

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

}