#!/bin/sh

# 执行curl直至成功
curl_cycle(){
    while true; do
        curl "$@"
        if [ "$?"x = "0"x ]; then
            break
        fi
    done
}

# 执行下载直至成功
curlDown(){
    folder=$1
    filename=$2
    dUrl=$3
    dProxy=$4
    
    [ ! -d "${folder}/tmp" ] && mkdir -p "${folder}/tmp"
    if [ "${dProxy}"x != ""x ]; then
        curl_cycle -x ${dProxy} -kfsSL -o "${folder}/tmp/${filename}" ${dUrl}
    else
        curl_cycle -kfsSL -o "${folder}/tmp/${filename}" ${dUrl}
    fi
    mv "${folder}/tmp/${filename}" "${folder}/${filename}"
}