~vibhavp/ubuntu/saucy/im-switch/merge-from-debian

#!/bin/sh
# Copyright (C) 2006        Osamu Aoki  <osamu@debian.org>
# Copyright (C) 2005 - 2006 Kenshi Muto <kmuto@debian.org>
#  Modified for Debian package.
# Copyright (C) 1999 - 2004 Red Hat, Inc. All rights reserved. This
# copyrighted material is made available to anyone wishing to use, modify,
# copy, or redistribute it subject to the terms and conditions of the
# GNU General Public License version 2.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

# system wide configuration directory
XINPUT_PATH=/etc/X11/xinit/xinput.d
# user specific customization directory
DOTXINPUT_PATH=${HOME}/.xinput.d
# All im-switch related alternatives start with xinput-
ALTER_XINPUT=/etc/alternatives/xinput-
# location for special hook scripts installed by each IM packages
HOOKDIR=/usr/share/im-switch

# $LNG is locale <languag>e_<region> without .<encoding> and .<encoding>@EURO
LNG=${LC_ALL:-${LC_CTYPE:-${LANG}}}
LNG=${LNG%@*}
LNG=${LNG%.*}

[ -z "$LNG" ] && LNG="all_ALL" || true

USERID=$(id -u)
VER=@@VERSION@@

VERBOSE=0

# echo to STDERR when VERBOSE is on.
vecho() {
    if [ $VERBOSE -eq 1 ] ; then
        echo "$1" >&2
    fi
}

# echo local setups to STDERR when VERBOSE is on.
vlang() {
    if [ $VERBOSE -eq 1 ] ; then
      echo "LC_ALL=\"$LC_ALL\"" >&2
      echo "LC_CTYPE=\"$LC_CTYPE\"" >&2
      echo "LANG=\"$LANG\"" >&2
      echo "LNG=\"$LNG\"" >&2
    fi
}

# echo command line info to STDERR when VERBOSE is on.
errcmd() {
echo "Error: \"${0##*/}\" invoked with \"$ORGAT\" as options." >&2
echo "Error: Try \"${0##*/} -h\" for usage." >&2
}

# echo missing dependency information for $1=$LNG
dependency() {
    if [ -z "$1" ] ; then
        return
    fi
    if [ -r  ${HOME}/$(basename "$1") ]; then
        DEPENDS=$(grep -e "DEPENDS=" ${HOME}/$(basename $1) | sed -e 's/DEPENDS=//' -e 's/"//g')
    elif [ -r "${XINPUT_PATH}/$1" ]; then
        DEPENDS=$(grep -e "DEPENDS=" $XINPUT_PATH/$1 | sed -e 's/DEPENDS=//' -e 's/"//g')
    else
        DEPENDS=""
    fi
    vecho "From the package dependency information requires"
    vecho "  \"$DEPENDS\"."
    if [ -z "$DEPENDS" ]; then
        return
    fi
    RESULT=""
    # split with ","
    IFS=","
    for i in `echo "$DEPENDS"`; do 
        INSTALLED=0
	# split with |
	IFS="|"
	for j in `echo "$i"`; do 
            unset IFS
            vecho "checking status of \"$j\" package"
            if dpkg -s $j 2>/dev/null | grep -q -e "Status: install ok installed" ; then
                vecho "+++ \"$j\" package is installed."
                INSTALLED=1
            else
                vecho "---- \"$j\" package is NOT installed."
            fi
        done
    done
    if [ $INSTALLED -eq 0 ]; then 
        if [ -z "$RESULT" ]; then
            RESULT="( $i )"
        else
            RESULT="${RESULT} and ( $i )"
        fi
    fi
    if [ -n "$RESULT" ]; then
        echo "Please install following packages:"
        echo "  $(echo \"$RESULT\" | sed -e 's/|/ or /g') ."
    fi
}

# echo current system wide default IM setup name
current_system_im () {
    if [ -r "${ALTER_XINPUT}${LNG}" ]; then
	/usr/sbin/update-alternatives --display xinput-$LNG | \
	sed -ne 's/^ *link currently points to \([^ ]*\)/\1/p' | \
	sed -e "s%${XINPUT_PATH}/%%"
    elif [ -r "${ALTER_XINPUT}all_ALL" ]; then
	/usr/sbin/update-alternatives --display xinput-all_ALL | \
	sed -ne 's/^ *link currently points to \([^ ]*\)/\1/p' | \
	sed -e "s%${XINPUT_PATH}/%%"
    else
	echo "No system wide default \"${ALTER_XINPUT}${LNG} or ${ALTER_XINPUT}all_ALL\" is defined."
	exit 1
    fi
}

# echo current user IM setup name
current_user_im () {
if [ -h ${DOTXINPUT_PATH}/$LNG ]; then
    readlink ${DOTXINPUT_PATH}/$LNG | \
    sed -e "s%${XINPUT_PATH}/%%" -e "s%${DOTXINPUT_PATH}/%~/.xinput.d/%"
fi
}

# echo IM setup candidates
possible_im () {
    ( (/usr/bin/find $XINPUT_PATH    -type f| sed -e "s%$XINPUT_PATH/%%") ; \
      (/usr/bin/find $DOTXINPUT_PATH -type f| sed -e "s%$DOTXINPUT_PATH/%%" ; ) ) | \
    sort -u
    # XXX FIXME : should test for executable
}

# run system hook script when system wide IM setup is changed
# So far, I have not see its use yet.
#   $PREVIOUS
#   $DEFAULT
runhookscripts () {
    if [ "$DEFAULT" != "$PREVIOUS" ]; then
        [ "$PREVIOUS" -a -x "$HOOKDIR/$PREVIOUS" ] &&  $HOOKDIR/$PREVIOUS remove
        [ "$DEFAULT" -a -x "$HOOKDIR/$DEFAULT" ] &&  $HOOKDIR/$DEFAULT install
    fi
}

list() {
    echo "Your input method setup under $LNG locale as below."
    echo "======================================================="
    if [ "$USERID" -eq 0 ]; then
        echo "No private configuration can be defined for root account."
    elif [ -r "${DOTXINPUT_PATH}/${LNG}" ]; then
        if [ -L "${DOTXINPUT_PATH}/${LNG}" ]; then
	  echo "The configuration \"${DOTXINPUT_PATH}/${LNG}\" is defined as a link pointing to"
	  echo "$(basename $(readlink "${DOTXINPUT_PATH}/${LNG}"))"
        else
	  echo "The private configuration is a static file \"${DOTXINPUT_PATH}/${LNG}\" ."
        fi
	echo "This private configuration supersedes the system wide default."
    elif [ -L "${DOTXINPUT_PATH}/all_ALL" ]; then
        if [ -L "${DOTXINPUT_PATH}/all_ALL" ]; then
	  echo "The configuration \"${DOTXINPUT_PATH}/all_ALL\" is defined as a link pointing to"
	  echo "$(basename $(readlink "${DOTXINPUT_PATH}/all_ALL"))"
        else
	  echo "The private configuration is a static file \"${DOTXINPUT_PATH}/all_ALL\" ."
        fi
	echo "This private configuration supersedes the system wide default."
    else
	echo "No private \"${DOTXINPUT_PATH}/${LNG} or ${DOTXINPUT_PATH}/all_ALL\" is defined."
    fi
    echo "======================================================="
    if [ -r "${ALTER_XINPUT}${LNG}" ]; then
	echo "The system wide default is pointed by \"${ALTER_XINPUT}${LNG}\" ."
	/usr/sbin/update-alternatives --display xinput-$LNG | sed -e "s%$XINPUT_PATH/%%"
    elif [ -r "${ALTER_XINPUT}all_ALL" ]; then
	echo "The system wide default is pointed by \"${ALTER_XINPUT}all_ALL\" ."
	/usr/sbin/update-alternatives --display xinput-all_ALL | sed -e "s%$XINPUT_PATH/%%"
    else
	echo "No system wide default \"${ALTER_XINPUT}${LNG} or ${ALTER_XINPUT}all_ALL\" is defined."
    fi
    vecho "======================================================="
    vecho "The system wide default input methods are available for the locales:"
    for i in `/bin/ls $ALTER_XINPUT* | sed -e "s%$ALTER_XINPUT%%"`; do
        vecho -n "$i "
    done
    vecho
    echo "======================================================="
    echo "The available input method configuration files are:"
    for i in `possible_im` ; do
        if [ -r $DOTXINPUT_PATH/$i ]; then
            echo -n "~/.xinput.d/$i "
        else
            echo -n "$i "
        fi
    done
    echo
    vecho "======================================================="
    vecho "The available input method hook scripts are in $HOOKDIR:"
    for i in `/usr/bin/find $HOOKDIR -type f| sed -e "s%$HOOKDIR/%%"`; do
        vecho -n "$i "
    done
    vecho
    echo "======================================================="
}

# set IM to defaults
auto() {
    if [ "$USERID" -eq 0 ]; then
        if [ ! -r "${ALTER_XINPUT}${LNG}" ]; then
	    echo "No system wide default defined just for locale ${LNG} ."
	    echo "Use \"all_ALL\" quasi-locale and set IM."
            LNG="all_ALL"
        fi
	PREVIOUS=$(current_system_im)
	/usr/sbin/update-alternatives --auto xinput-$LNG
    else
	if [ -r "${DOTXINPUT_PATH}/${LNG}" ]; then
	    PREVIOUS=$(current_user_im)
	    mv ${DOTXINPUT_PATH}/${LNG} ${DOTXINPUT_PATH}/${LNG}.backup
	fi
    fi
    DEFAULT=$(current_system_im)
    dependency $DEFAULT
    runhookscripts
}

# set im setup pointing to to $1 script in $XINPUT_PATH
setalt() {
    if [ "$USERID" -eq 0 ]; then
        vecho "You are root user."
        # sanity check
        if [ ! -r "$XINPUT_PATH/$1" ] ; then
            echo "Error: no system wide configuration file \"$1\" exists." >&2
	    echo "Error: No action taken." >&2
            exit 1
        fi
	if [ ! -r "${ALTER_XINPUT}${LNG}" ]; then
	    echo "No system wide default defined just for locale $LNG ."
	    echo "Use \"all_ALL\" quasi-locale and set IM."
            LNG="all_ALL"
	fi
	PREVIOUS=$(current_system_im)
	/usr/sbin/update-alternatives --set xinput-$LNG $XINPUT_PATH/${1}
        DEFAULT=$(current_system_im)
        vecho "Changed system wide default from $PREVIOUS to $DEFAULT."
    else
        # sanity check
        if [ ! -r "$XINPUT_PATH/${1}" -a ! -r "$DOTXINPUT_PATH/${1}" ] ; then
            echo "Error: no configuration file \"${1}\" exists." >&2
	    echo "Error: No action taken." >&2
            exit 1
        fi
        vecho "You are non-root user."
	if [ ! -d ${DOTXINPUT_PATH} ]; then
	    mkdir -p ${DOTXINPUT_PATH}
            vecho "Creating  ${DOTXINPUT_PATH} directory."
        fi
	if [ -r "${DOTXINPUT_PATH}/${LNG}" ]; then
	    PREVIOUS=$(current_user_im)
            mv ${DOTXINPUT_PATH}/${LNG} ${DOTXINPUT_PATH}/${LNG}.backup
            vecho "Backed up user configuration pointing to $PREVIOUS."
	fi
        if [ -r "$DOTXINPUT_PATH/${1}" ] ; then
            ln -s $DOTXINPUT_PATH/${1} ${DOTXINPUT_PATH}/$LNG
        else
            ln -s $XINPUT_PATH/${1} ${DOTXINPUT_PATH}/$LNG
        fi
        DEFAULT=$(current_user_im)
        vecho "Set user configuration pointing to $DEFAULT."
    fi
    dependency "$DEFAULT"
    runhookscripts
}

# set im setup pointing to to a script in $XINPUT_PATH by terminal menu
cfgalt() {
    if [ "$USERID" -eq 0 ]; then
        vecho "You are root user."
	if [ ! -r "${ALTER_XINPUT}${LNG}" ]; then
	    echo "No system wide default defined just for locale $LNG ."
	    echo "Use \"all_ALL\" quasi-locale and set IM."
            LNG="all_ALL"
	fi
	PREVIOUS=$(current_system_im)
        echo    "System wide default for ${LNG} locale is marked with [+]."
	/usr/sbin/update-alternatives --config xinput-$LNG
        DEFAULT=$(current_system_im)
        vecho "Changed system wide default from $PREVIOUS to $DEFAULT."
    else
        vecho "You are non-root user."
	if [ ! -d ${DOTXINPUT_PATH} ]; then
	    mkdir -p ${DOTXINPUT_PATH}
            vecho "Creating  ${DOTXINPUT_PATH} directory."
        fi
        PREVIOUS_SYS=$(current_system_im)
	if [ -r "${DOTXINPUT_PATH}/${LNG}" ]; then
	    PREVIOUS=$(current_user_im)
            cp -a ${DOTXINPUT_PATH}/${LNG} ${DOTXINPUT_PATH}/${LNG}.backup
            vecho "Backed up user configuration pointing to $PREVIOUS."
	fi
        vecho "    PREVIOUS_SYS=\"$PREVIOUS_SYS\""
        vecho "    PREVIOUS=\"$PREVIOUS\""
        COUNT=`possible_im | wc -l`
        if [ "x$DISPLAY" != "x" ] && [ -x "/usr/bin/zenity" ]; then
            zenity_ucfgalt 
        else
            console_ucfgalt
        fi
    fi
    DEFAULT=$(current_user_im)
    vecho "Set user configuration pointing to $DEFAULT."
    dependency "$DEFAULT"
    runhookscripts
}

# set user im setup pointing to to a script in $XINPUT_PATH by console menu
console_ucfgalt() {
echo "Input Method Switcher                     im-switch Version: $VER"
echo "  Selection    Input Method Candidates for ${DOTXINPUT_PATH}/${LNG}:"
echo "  ------------------------------------------------------------------"
INDEX=0
for i in `possible_im`; do
    INDEX=$(($INDEX+1))
    if [ -r $DOTXINPUT_PATH/$i ]; then
    	if [ "$PREVIOUS" = "~/.xinput.d/$i" ]; then
            echo -n "*"
    	else
            echo -n " "
    	fi
    	if [ "$PREVIOUS_SYS" = "~/.xinput.d/$i" ]; then
            echo -n "+"
    	else
            echo -n " "
    	fi
        echo "    $INDEX        ~/.xinput.d/$i "
    else
    	if [ "$PREVIOUS" = "$i" ]; then
            echo -n "*"
    	else
            echo -n " "
    	fi
    	if [ "$PREVIOUS_SYS" = "$i" ]; then
            echo -n "+"
    	else
            echo -n " "
    	fi
        echo "    $INDEX        $i"
    fi
done
echo    "System wide default for ${LNG} (or all_ALL) locale is marked with [+]."
echo    "Type \"REMOVE\" to remove user selection to enable system default."
echo -n "Press enter to keep the current selection[*], or type selection number: "
read SEL
echo
if [ -z "$SEL" ]; then
    # No action because INDEX is larger than 0
    SEL=0
fi
if [ "$SEL" != "REMOVE" ]; then
    INDEX=0
    for i in `possible_im`; do
        INDEX=$(($INDEX+1))
        if [ "$SEL" -eq "$INDEX" ]; then
            if [ -r "$DOTXINPUT_PATH/$i" ] ; then
                ln -fs $DOTXINPUT_PATH/$i ${DOTXINPUT_PATH}/$LNG
            else
                ln -fs $XINPUT_PATH/$i ${DOTXINPUT_PATH}/$LNG
            fi
        fi
    done
else
    if [ -h "$DOTXINPUT_PATH/$LNG" ] ; then
        rm ${DOTXINPUT_PATH}/$LNG
        vecho "${DOTXINPUT_PATH}/$LNG removed"
    fi
fi
echo "Please read /usr/share/doc/im-switch/README.Debian.gz ."
echo "Please restart the X session to activate the selected Input Method."
}

menuitem_im () {
echo $1 | sed \
-e "s/^~\/\.xinput\.d\//User local configuration at ~\/\.xinput\.d\/: /" \
-e "s/default-xim$/Use xim (default-xim)/" \
-e "s/default$/Use setting by the sysadmin. (default)/" \
-e "s/ibus$/Use IBus (ibus)/" \
-e "s/lo-gtk$/Use thai IM_MODULE (lo-gtk)/" \
-e "s/none$/Do not use Input Method. (none)/" \
-e "s/scim-bridge$/Use SCIM via scim-bridge (scim-bridge)/" \
-e "s/scim-immodule$/Use SCIM via IM_MODULE (scim-immodule)/" \
-e "s/scim$/Use SCIM via xim (scim)/" \
-e "s/skim$/Use SCIM via IM_MODULE (skim)/" \
-e "s/th-gtk$/Use thai IM_MODULE (th-gtk)/" \
-e "s/th-xim$/Use thai xim (th-xim)/"
}
# set user im setup pointing to to a script in $XINPUT_PATH by zenity menu
zenity_ucfgalt() {
ZCMD0="zenity --title=\"Input Method Switcher (ver $VER)\" --width=600 --height=400 --text=\"Select User Input Method for ${LNG} . User choice supercedes system choice marked as default.\" --list --radiolist --hide-column=2 --column \"User\" --column \"im\" --column \"system\" --column \"Description of Input Method\""
ZCMD=""
for i in `possible_im`; do
    if [ -r $DOTXINPUT_PATH/$i ]; then
    	if [ "$PREVIOUS" = "~/.xinput.d/$i" ]; then
            ZCMD="$ZCMD TRUE"
    	else
            ZCMD="$ZCMD FALSE"
    	fi
        ZCMD="$ZCMD ~/.xinput.d/$i"
    	if [ "$PREVIOUS_SYS" = "~/.xinput.d/$i" ]; then
            ZCMD="$ZCMD default"
    	else
            ZCMD="$ZCMD \" \""
    	fi
        ZCMD="$ZCMD \"$(menuitem_im ~/.xinput.d/$i)\""
    else
    	if [ "$PREVIOUS" = "$i" ]; then
            ZCMD="$ZCMD TRUE"
    	else
            ZCMD="$ZCMD FALSE"
    	fi
        ZCMD="$ZCMD $i"
    	if [ "$PREVIOUS_SYS" = "$i" ]; then
            ZCMD="$ZCMD default"
    	else
            ZCMD="$ZCMD \" \""
    	fi
        ZCMD="$ZCMD \"$(menuitem_im $i)\""
    fi
done
ZCMD="$ZCMD FALSE REMOVE \" \" \"Remove user choice to enable system choice\""
vecho "$ZCMD0 $ZCMD"
SEL=$(eval $ZCMD0 $ZCMD)
if [ -z "$SEL" ]; then
    SEL=$PREVIOUS
fi
ZMES="No user configuration enabled for $LNG."
if [ -n "$SEL" ]; then
    if [ "$SEL" != "REMOVE" ]; then
        if [ -r "$DOTXINPUT_PATH/$SEL" ] ; then
            ln -fs $DOTXINPUT_PATH/$SEL ${DOTXINPUT_PATH}/$LNG
            ZMES="User configuration $(menuitem_im $SEL) enabled for $LNG."
        else
            ln -fs $XINPUT_PATH/$SEL ${DOTXINPUT_PATH}/$LNG
            ZMES="User configuration $(menuitem_im $SEL) enabled for $LNG."
        fi
    else
        if [ -h "$DOTXINPUT_PATH/$LNG" ] ; then
            rm ${DOTXINPUT_PATH}/$LNG
            vecho "${DOTXINPUT_PATH}/$LNG removed"
            ZMES="User configuration removed for $LNG."
        fi
    fi
fi
zenity --info --text "Please read /usr/share/doc/im-switch/README.Debian.gz . \n\n$ZMES\n\nRestart the X session to activate the selected Imput Method."
}

help() {
echo "Input Method Switcher: im-switch Version=$VER"
echo ""
echo "\"${0##*/}\" configures the input method to be automatically switched based "
echo "on the locale (ll_CC) using Debian \"update-alternatives\" mechanism."
echo "When \"${0##*/}\" is invoked from root user, it sets system wide alternatives."
echo ""
echo "Usage: ${0##*/} [-v][-z ll_CC] -s inputmethodname"
echo "           to set a specific input method for the language"
echo "       ${0##*/} [-v][-z ll_CC] -c"
echo "           to set an input method for the language by menu"
echo "       ${0##*/} [-v][-z ll_CC] -a"
echo "           to revert to the default input method for the language"
echo "       ${0##*/} [-v][-z ll_CC] -l"
echo "           to list current settings and available input methods for"
echo "           the language, and also all the available languages"
echo "       ${0##*/} -h"
echo "           to show this help"
echo ""
echo "The \"ll_CC\" argument of -z takes the form \"<language>_<teritory>\" and "
echo "is used to override the current locale (ISO 639 / ISO 3188) : eg \"-z ja_JP\""
echo ""
echo "The use of -v option produces verbose outputs."
echo ""
}

ORGAT="$@"

while getopts "vfz:als:ch" OPTION; do
    case $OPTION in
        v) VERBOSE=1;;
        z) vlang; LNG="$OPTARG"; LNG=${LNG%@*}; LNG=${LNG%.*};;
        a) vlang; auto; exit 0;;
        l) vlang; list; exit 0;;
        s) vlang; setalt "$OPTARG"; exit 0;;
        c) vlang; cfgalt; exit 0;;
        h) vlang; help; exit 0;;
	?) errcmd; exit 1;;
    esac
done

# If no option --> Menu use under X :-)
vlang
cfgalt
exit 0