gtab

#!/usr/bin/bash
#
# Bash gvim helper
#

#suppress GTK warning about unknonwn characters. You may adjust/change this if it's causing you problems
export LC_ALL=C

# usage
function show_help()
{
    echo "command:"
    echo "gtab [option] file1 file2 ..."
    echo "options:"
    echo "-h/-?/--help: usage"
    echo "-l/--list: list available gvim instances"
    echo "-s servername/--server servername: user specified gvim server "
}

HOST_UNAME="$(uname -s)"
host_os=Linux

case "${HOST_UNAME}" in
    CYGWIN*)    host_os=Cygwin;;
    Linux*)     host_os=Linux;;
    SunOS*)     host_os=Solaris;;
esac

#Generate unique instance
SERVERNAME="`hostname`:`basename \`pwd\``:$PPID"

# test instances
SERVERLIST=
if [ $host_os == "Solaris" ]
then 
    SERVERLIST=$( grep "^gvim" /proc/*/cmdline |xargs -0 -n 3|awk '{print $3}')
else
    SERVERLIST=$(grep -a "^gvim" /proc/*/cmdline |xargs -0|awk -F ' ' '{print $3}')
fi

# parse args
while :; do
    case $1 in
        (-h|-\?|--help):
            show_help
            exit 0
            ;;
        (-l|--list):
                echo "$SERVERLIST"
            exit 0
            ;;
        (-s|--server):
            if [[ -z "$2" ]]
            then
                echo "error: specify a server name with -s/--server option"
                exit 1
            fi
            SERVERNAME="$2"
            shift  
            shift
            ;;
        (-?*):
            printf 'ERR: Unknown option: %s\n' "$1" >&2
            show_help
            exit 1
            ;;
        (*):   
            # Default case: No more options, so break out of the loop.
            break
            ;;
    esac
done

IS_EXISTING_SERVER=$(echo $SERVERLIST | grep $SERVERNAME)
if [[ ! $IS_EXISTING_SERVER ]]; then
    echo "starting gvim id '$SERVERNAME'"
    gvim --servername "${SERVERNAME}" 
else
    # test if trying to start another instance in same dir
    if [[ -z "$1" ]]
    then
        echo "info: an instance of gvim already running for $SERVERNAME"
        echo "direcly use it or start another instance with a new servername"
        exit 0 
    fi
fi

if [[ $1 ]]; then
    echo "Tabing ${@} to gvim id '$SERVERNAME'"
    gvim --servername "${SERVERNAME}" --remote-tab "${@}"
fi

exit 0