jumpdir.sh

#!/bin/bash
# Author: Siyuan Liu
# E-mail: siyuanl96@gmail.com

# ALIAS_DB="$(cd $(dirname ${BASH_SOURCE[0]}); pwd)/.jumpdir.d"
ALIAS_DB="/home/`whoami`/.jumpdir.d/"
ALIAS_CMDLIST="${ALIAS_DB}/cmdlist"
ALIAS_COMP="${SHELL_CMD_COMP_DIR}/jcd.comp"

if [ ! -d "$ALIAS_DB" ]; then
	mkdir $ALIAS_DB
fi

if [ ! -f $ALIAS_COMP ]; then
	touch $ALIAS_COMP
	echo "jcd" > $ALIAS_COMP
	echo "	@" >> $ALIAS_COMP
fi

if [ ! -f "$ALIAS_CMDLIST" ]; then
	touch $ALIAS_CMDLIST
fi

Usage() {
	echo -e "	-a  Add or modify an alias."
	echo -e "	-d  Delete an alias."
	echo -e "	-t  Echo target directory."
	echo -e "	-l  List all aliases."
}

ParseOpts() {
	while getopts ":a:d:t:l" opt
	do
		case $opt in
		a)
			arr=(`echo $OPTARG | tr '=' ' '`)
			alias=${arr[0]}
			path=${arr[1]}

			SaveAlias $alias $path
		;;
		d)
			DelAlias $OPTARG
		;;
		t)
			JumpTo $OPTARG
		;;
		l)
			ListAlias
		;;
		*)
			Usage
			exit 1
		;;
		esac
	done
}

ListAlias() {
	tmp=1
	cat $ALIAS_CMDLIST | while read line
	do
		if [ $tmp == 1 ]; then
			echo -e "\e[32;40m$line\E[0m"
			tmp=0
		else
			echo -e "\e[36;40m$line\E[0m"
			tmp=1
		fi
	done
}

DelAlias() {
	sed -i '/^'$1'=/d' $ALIAS_CMDLIST
	sed -i '/^\t'$1'$/d' $ALIAS_COMP
}

SaveAlias() {
	path=$(SearchAlias $1)

	if [ "$path" != "" ]; then
		echo -e "The alias \e[32;40m$1=$path\E[0m already exist. Do you want to replace it? (y/n)"
		read continue
		if [[ "$continue" != "y" ]]; then
			exit 0
		fi

		sed -i '/^'$1'=/d' $ALIAS_CMDLIST
	fi

	sed -i '/^\t'$1'$/d' $ALIAS_COMP
	echo "	$1" >> $ALIAS_COMP

	echo "$1=$2" >> ${ALIAS_CMDLIST}
	sort ${ALIAS_CMDLIST} -o ${ALIAS_CMDLIST}
}

# return path
SearchAlias() {
	alias=$1
	path=`awk -F = '/^'$alias'=.+/ {print $2}' ${ALIAS_CMDLIST}`
	echo $path
}

JumpTo() {
	dst=$(SearchAlias $1)

	if [ "$dst" == "" ]; then
		echo "Alias does not exist."
		exit 1
	fi

	if [ ! -d $dst ] || [ "$dst" == "" ]; then
		echo -e "The directory \033[31m$dst\E[0m does not exist."
		exit 1
	fi

	echo $dst
}

if (( $# < 1 )); then
	Usage
	exit 1
fi

ParseOpts $@