-
Notifications
You must be signed in to change notification settings - Fork 0
/
main.go
45 lines (41 loc) · 916 Bytes
/
main.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
/**
* fetch を修正して、個々の引数の URL に接頭辞 http:// がなければ追加するようにしなさい。
* strings.HasPrefix を使いたくなるかもしれません。
*/
package main
import (
"fmt"
"io"
"net/http"
"os"
"strings"
)
func httpGet(url string) *http.Response {
const (
prefixHttp = "http://"
prefixHttps = "https://"
)
if !strings.HasPrefix(url, prefixHttp) && !strings.HasPrefix(url, prefixHttps) {
url = prefixHttp + url
}
resp, err := http.Get(url)
if err != nil {
fmt.Fprintf(os.Stderr, "fetch: %v¥n", err)
os.Exit(1)
}
return resp
}
func writeAndCloseResponse(resp *http.Response) {
_, err := io.Copy(os.Stdout, resp.Body)
resp.Body.Close()
if err != nil {
fmt.Fprintf(os.Stderr, "fetch: reading %s: %v\n", err)
os.Exit(1)
}
}
func main() {
for _, url := range os.Args[1:] {
resp := httpGet(url)
writeAndCloseResponse(resp)
}
}