A Multi-Configuration Launcher for Eclipse

launch.sh

#!/bin/bash

# A Multi-Configuration Launcher for Eclipse



array_contains () {
    local array="$1[@]"
    local seeking=$2
    local in=1
    for element in "${!array}"; do
        if [[ $element == $seeking ]]; then
            in=0
            break
        fi
    done
    return $in
}

array_remove () {
    local array="$1"
    local seeking=$2
    local index=1
    for element in $(eval echo \${$array[@]}); do
        if [[ $element == $seeking ]]; then
            unset $array[$index]
        fi
        ((index++))
    done
}

is_an_eclipse_dir() {
    local path=$1
    if [[ $path = /* || $path =~ ^\. || ! -d $path || -e $path/.noeclipse ]]; then
        return 1
    else
        return 0
    fi
}



valid_dirs=('')
while IFS= read -r -u3 -d $'\0' dir; do
    dir=${dir%%/}
    dir=${dir##./}
    is_an_eclipse_dir $dir
    if [ $? -eq 0 ]; then
        valid_dirs+=($dir)
    fi
done 3< <(find -mindepth 1 -maxdepth 1 -type d -print0)

choice=""
if [ $# -eq 0 ]; then
    if [ -f .eclipse_launcher_last_choice ]; then
        last=$(cat .eclipse_launcher_last_choice)
        array_contains valid_dirs $last
        if [ $? -eq 0 ]; then
            array_remove valid_dirs $last
            valid_dirs[0]=$last
        fi
    fi

    while [[ -z $choice ]]; do
        choice=$(zenity --entry \
                        --title "Eclipse Launcher" \
                        --text "Select a configuration." \
                        --entry-text "${valid_dirs[@]}")

        if [ $? -eq 1 ]; then
            exit 1
        fi

        is_an_eclipse_dir $choice
        if [ $? -eq 1 ]; then
            if [[ -z $choice || $choice =~ ^\. || -e $choice ]]; then
                zenity --error \
                       --text "\"$choice\" is invalid"

                choice=""
            else
                zenity --question \
                       --text "\"$choice\" does not exist, do you want to create it now?"

                if [ $? -eq 1 ]; then
                    choice=""
                fi
            fi
        fi
    done

    echo "$choice" > .eclipse_launcher_last_choice
else
    choice="$1"
fi

echo "Launching Eclipse..."
eclipse \
    -configuration "$choice/configuration" \
    -data "$choice/workspace"