functions

#! /bin/bash
function Downloadfile()
{
	if [ "$WHERE" = "china" ]; then
		site1="http://mtimercms.u.qiniudn.com/"
		site2="http://mtimercms.oss.aliyuncs.com/"
	else
		site1="http://mtimercms.u.qiniudn.com/"
		site2="http://mtimercms.oss.aliyuncs.com/"
	fi
	randstr=$(date +%s)
	package="${1##*/}"

	if [ -s ${MPACKAGES_PATH}/$package ]; then
		echo "[OK] $package found."
	else
		echo "[Notice] $package not found, download now......"
		if ! wget -c --tries=3 -O ${MPACKAGES_PATH}/$package ${site1}${1}?${randstr} >/dev/null 2>&1; then
			if ! wget -c --tries=3 -O ${MPACKAGES_PATH}/$package ${site2}${1}?${randstr} >/dev/null 2>&1; then
				echo "[Error] Download Failed : $package, please check $1 "
				exit 1
			fi
		fi
		echo "[Success] $package Downloaded."
	fi
	Unpackfile $package $2
}

function Unpackfile()
{
	file_name=$(echo $1 | sed -r 's/ *(.tar|.gz|.bz2|.zip|.tgz)[0-9]* *//g')
	file_ext=$(echo $1 |awk -F . '{if (NF>1) {print $NF}}')
	case $file_ext in
		zip)
			unzip ${MPACKAGES_PATH}/$1 -d ${MUNPACKED_PATH} >/dev/null 2>&1
			;;

		bz2)
			tar xvjf ${MPACKAGES_PATH}/$1 -C ${MUNPACKED_PATH} >/dev/null 2>&1
			;;

		tgz|gz)
			tar zxvf ${MPACKAGES_PATH}/$1 -C ${MUNPACKED_PATH} >/dev/null 2>&1
			;;

		tar)
			tar xvf ${MPACKAGES_PATH}/$1 -C ${MUNPACKED_PATH} >/dev/null 2>&1
			;;
	esac

	if test -n "$2"; then
		cd ${MUNPACKED_PATH}/$2
	else
		cd ${MUNPACKED_PATH}/$file_name
	fi
}