#!/bin/sh

#

# This program launch a web browser on the html page

# describing a git command.

#

# Copyright (c) 2007 Christian Couder

# Copyright (c) 2006 Theodore Y. Ts'o

#

# This file is heavily stolen from git-mergetool.sh, by

# Theodore Y. Ts'o (thanks) that is:

#

# Copyright (c) 2006 Theodore Y. Ts'o

#

# This file is licensed under the GPL v2, or a later version

# at the discretion of Junio C Hamano or any other official

# git maintainer.

#

USAGE='[--browser=browser|--tool=browser] [--config=conf.var] url/file ...'

# This must be capable of running outside of git directory, so

# the vanilla git-sh-setup should not be used.

NONGIT_OK=Yes

. git-sh-setup

valid_custom_tool()

{

	browser_cmd="$(git config "browser.$1.cmd")"

	test -n "$browser_cmd"

}

valid_tool() {

	case "$1" in

	firefox | iceweasel | seamonkey | iceape | \

	chrome | google-chrome | chromium | chromium-browser | \

	konqueror | opera | w3m | elinks | links | lynx | dillo | open | \

	start | cygstart | xdg-open)

		;; # happy

	*)

		valid_custom_tool "$1" || return 1

		;;

	esac

}

init_browser_path() {

	browser_path=$(git config "browser.$1.path")

	if test -z "$browser_path" &&

	   test "$1" = chromium &&

	   type chromium-browser >/dev/null 2>&1

	then

		browser_path=chromium-browser

	fi

	: ${browser_path:="$1"}

}

while test $# != 0

do

	case "$1" in

	-b|--browser*|-t|--tool*)

		case "$#,$1" in

		*,*=*)

			browser=$(expr "z$1" : 'z-[^=]*=\(.*\)')

			;;

		1,*)

			usage ;;

		*)

			browser="$2"

			shift ;;

		esac

		;;

	-c|--config*)

		case "$#,$1" in

		*,*=*)

			conf=$(expr "z$1" : 'z-[^=]*=\(.*\)')

			;;

		1,*)

			usage ;;

		*)

			conf="$2"

			shift ;;

		esac

		;;

	--)

		break

		;;

	-*)

		usage

		;;

	*)

		break

		;;

	esac

	shift

done

test $# = 0 && usage

if test -z "$browser"

then

	for opt in "$conf" "web.browser"

	do

		test -z "$opt" && continue

		browser="$(git config $opt)"

		test -z "$browser" || break

	done

	if test -n "$browser" && ! valid_tool "$browser"; then

		echo >&2 "git config option $opt set to unknown browser: $browser"

		echo >&2 "Resetting to default..."

		unset browser

	fi

fi

if test -z "$browser" ; then

	if test -n "$DISPLAY"; then

		browser_candidates="firefox iceweasel google-chrome chrome chromium chromium-browser konqueror opera seamonkey iceape w3m elinks links lynx dillo xdg-open"

		if test "$KDE_FULL_SESSION" = "true"; then

			browser_candidates="konqueror $browser_candidates"

		fi

	else

		browser_candidates="w3m elinks links lynx"

	fi

	# SECURITYSESSIONID indicates an OS X GUI login session

	if test -n "$SECURITYSESSIONID" || test -n "$TERM_PROGRAM"

	then

		browser_candidates="open $browser_candidates"

	fi

	# /bin/start indicates MinGW

	if test -x /bin/start; then

		browser_candidates="start $browser_candidates"

	fi

	# /usr/bin/cygstart indicates Cygwin

	if test -x /usr/bin/cygstart; then

		browser_candidates="cygstart $browser_candidates"

	fi

	for i in $browser_candidates; do

		init_browser_path $i

		if type "$browser_path" > /dev/null 2>&1; then

			browser=$i

			break

		fi

	done

	test -z "$browser" && die "No known browser available."

else

	valid_tool "$browser" || die "Unknown browser '$browser'."

	init_browser_path "$browser"

	if test -z "$browser_cmd" && ! type "$browser_path" > /dev/null 2>&1; then

		die "The browser $browser is not available as '$browser_path'."

	fi

fi

case "$browser" in

firefox|iceweasel|seamonkey|iceape)

	# Check version because firefox < 2.0 does not support "-new-tab".

	vers=$(expr "$($browser_path -version)" : '.* \([0-9][0-9]*\)\..*')

	NEWTAB='-new-tab'

	test "$vers" -lt 2 && NEWTAB=''

	"$browser_path" $NEWTAB "$@" &

	;;

google-chrome|chrome|chromium|chromium-browser)

	# No need to specify newTab. It's default in chromium

	"$browser_path" "$@" &

	;;

konqueror)

	case "$(basename "$browser_path")" in

	konqueror)

		# It's simpler to use kfmclient to open a new tab in konqueror.

		browser_path="$(echo "$browser_path" | sed -e 's/konqueror$/kfmclient/')"

		type "$browser_path" > /dev/null 2>&1 || die "No '$browser_path' found."

		"$browser_path" newTab "$@" &

		;;

	kfmclient)

		"$browser_path" newTab "$@" &

		;;

	*)

		"$browser_path" "$@" &

		;;

	esac

	;;

w3m|elinks|links|lynx|open|cygstart|xdg-open)

	"$browser_path" "$@"

	;;

start)

	exec "$browser_path" '"web-browse"' "$@"

	;;

opera|dillo)

	"$browser_path" "$@" &

	;;

*)

	if test -n "$browser_cmd"; then

		( eval "$browser_cmd \"\$@\"" )

	fi

	;;

esac