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@erukiti
Created Dec 10, 2014
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package main
import (
"fmt"
"io/ioutil"
"net/http"
"os"
"runtime"
"strings"
"sync"
)
func downloader(url string, wg *sync.WaitGroup) {
defer wg.Done()
tmp := strings.Split(url, "/")
fileName := tmp[len(tmp)-1]
resp, err := http.Get(url)
if err != nil {
fmt.Println(err)
return
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
fmt.Println(err)
return
}
ioutil.WriteFile(fileName, body, 0644)
}
func main() {
wg := new(sync.WaitGroup)
runtime.GOMAXPROCS(runtime.NumCPU())
// url := "http://yukkurisinai.net/gopher.png"
for _, url := range os.Args[1:] {
wg.Add(1)
go downloader(url, wg)
}
wg.Wait()
}
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