Archive the specified directory, then remove it

marmdir.sh

#!/bin/bash

################################################################################
#
# Title:        marmdir.sh
# Description:  Archive the specified directory, then remove it
# Author:       wraithmonster
# Reference:    http://www.apl.jhu.edu/Misc/Unix-info/tar/tar_28.html
#               http://bit.ly/bash-string-length
#               http://www.linux.com/archive/feature/120291
#
################################################################################

# Provide standard messages
verbose=false

#Provide messages of all commands in this script
veryVerbose=false

# Message when a given directory does not exist
noDirMessage="No DIRECTORY specified. Try '$(basename $0) --help' for help."

################################################################################
# Functions
################################################################################

function checkDirs() {
	
    # Strip whitespace
    archive=`expr "$1" : '[[:space:]]*\(.*\)[[:space:]]*$'`
    archiveLoc=`expr "$2" : '[[:space:]]*\(.*\)[[:space:]]*$'`
    
    # Check for null and whitespace
    if [ -z "$archive" ] || [ ! -n "$archive" ]; then
        errorMessage "$noDirMessage"
    fi
    
    if [ -z "$archiveLoc" ] || [ ! -n "$archiveLoc" ]; then
        warningMessage "No TARGET DIRECTORY specified. Using current directory ($(basename `pwd`))."
        archiveLoc="`pwd`"
    fi
    
    # Do the specified directories exist?
    if [ ! -d $archive ]; then 
        errorMessage "$archive is not a directory. Try '$(basename $0) --help' for help."
    fi
    
    if [ ! -d $archiveLoc ]; then 
        errorMessage "$archiveLoc is not a directory. Try '$(basename $0) --help' for help."
    fi
}

function checkParamStr() {
	# If there are no parameters, throw error
	if [ "${#1}" -eq "0" ]; then
	    errorMessage "$noDirMessage"
	fi
}

function errorMessage() {
    echo -e "Error: $1"
    exit 1
}

function warningMessage() {
	if [ $verbose == true ]; then
        echo -e "Warning: $1"
	fi
}

function outputUsage() {
    echo "marmdir - Archive & remove a dir"
    echo "Usage: `basename $0` [options...] [DIRECTORY] [TARGET DIRECTORY]"
    echo "Options:"
    echo "  -v/--verbose   Not yet implemented"
    echo "  -h/--help      Output this message"
    
    exit 1
}

################################################################################
# Command line processing
################################################################################

# This script requires at least one argument, so let's check for that first
checkParamStr "$@"

# Parse the command line arguments
while [ "$#" -gt "0" ]; do
    case "$1" in 
        -v|--verbose)
            verbose=true
            shift 1
            checkParamStr "$@"
            ;;
        -V|--veryverbose)
            verbose=true
            veryVerbose=true
            shift 1
            checkParamStr "$@"
            ;;
        -h|--help)
            outputUsage
            ;;
        -*|--*)
            # Unknown option
            errorMessage "Unknown option $1."
            ;;
        *)
            archive="$1"
            shift 1
            archiveLoc="$1"
            shift 1
            
            # If we have any more parameters left, the usage is incorrect
            if [ "$#" -gt "0" ]; then
                errorMessage "Unknown parameter $@."
            fi
            
            checkDirs $archive $archiveLoc
            break
            ;;
    esac
done

################################################################################
# Main
################################################################################

# Archive & remove the given directory

# Give messages if verbose
if [ $verbose == true ]; then
	echo "Archiving '$(basename $archive)' to '$(basename $archiveLoc)'..."
	if [ $veryVerbose == true ]; then
		tar -cvzf "$archiveLoc/$(basename $archive).$$.bak.tar.gz" $archive
	else
	    tar -czf "$archiveLoc/$(basename $archive).$$.bak.tar.gz" $archive
	fi
	echo "Done."
	echo "Removing '$(basename $archive)'..."
    if [ $veryVerbose == true ]; then
        rm -frv $archive
    else
        rm -fr $archive
    fi
    echo "Done."

# If not verbose, perform actions silently
else
    tar -czf "$archiveLoc/$(basename $archive).$$.bak.tar.gz" $archive
    rm -fr $archive
fi