Created
December 10, 2014 11:32
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package main | |
import ( | |
"fmt" | |
"io" | |
"log" | |
"net/http" | |
"os" | |
"strings" | |
"sync" | |
) | |
var saveDir string = "/tmp" | |
func main() { | |
var wg sync.WaitGroup | |
for _, url := range os.Args[1:] { | |
wg.Add(1) | |
saveFile := strings.Split(url, "/") | |
fmt.Println("Download ", url) | |
go func() { | |
defer wg.Done() | |
err := download(url, saveDir+"/"+saveFile[len(saveFile)-1]) | |
if err != nil { | |
log.Fatal(err) | |
return | |
} | |
}() | |
} | |
wg.Wait() | |
fmt.Println("finish.") | |
} | |
func download(url string, filename string) error { | |
file, err := os.Create(filename) | |
if err != nil { | |
return err | |
} | |
defer file.Close() | |
res, err := http.Get(url) | |
if err != nil { | |
return err | |
} | |
defer res.Body.Close() | |
_, err = io.Copy(file, res.Body) | |
if err != nil { | |
return err | |
} | |
return nil | |
} |
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