gglcc.sh

#!/bin/bash

# Author: Vaclav Bohac <bohac.v@gmail.com>
#
# Run easily Google Closure compiler in your project directory.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
# Usage:
# you@linux:www$ gglcc.sh -i inputfile.js -o outputfile.js -e externsfile.js

GGLCC_DIR="$HOME/google-closure-compiler/"
GGLCC_NAME="compiler.jar"
FILE_IN=""
FILE_OUT=""
EXTERNS=""
FORMATING_FLAG=""

if [ ! -f "$GGLCC_DIR$GGLCC_NAME" ]; then
    echo "Path to Google Closure Compiler is wrong. Please, fix it."
    exit 1
fi

while getopts :i:o:e:t optname
do
    case "$optname" in
        "i")
            if [ ! -f "$OPTARG" ]; then
                echo "Input file '$OPTARG' does not exist."
                exit 1
            fi
            FILE_IN=$OPTARG
            ;;
        "o")
            FILE_OUT=$OPTARG
            ;;
        "e")
            if [ ! -f "$OPTARG" ]; then
                echo "Externs file '$OPTARG' does not exist."
                exit 1
            fi
            EXTERNS=$OPTARG
            ;;

        "t")
            FORMATING_FLAG="--formatting PRETTY_PRINT"
            ;;
        "?")
            echo "Unknown options '$OPTARG'"
            ;;
        ":")
            echo "No argument value for '$OPTARG'"
            ;;
        *)
            echo "Unknown error while processing arguments.";
            ;;
    esac
done

java -jar "$GGLCC_DIR$GGLCC_NAME"   --compilation_level ADVANCED_OPTIMIZATIONS     \
                                    --js "$FILE_IN" --js_output_file "$FILE_OUT"   \
                                    --externs "$EXTERNS" $FORMATING_FLAG