asdf

go.mod

@@ -0,0 +1,3 @@
+module gitea.nulo.in/Nulo/downloader
+
+go 1.19

main.go

@@ -0,0 +1,51 @@
+package main
+
+import (
+	"io"
+	"log"
+	"net/http"
+	"os"
+	"strings"
+)
+
+func main() {
+	entries := os.Args[1:]
+	c := make(chan error)
+	d := Downloader{}
+	for _, u := range entries {
+		splits := strings.Split(u, ";")
+		url := splits[0]
+		output := splits[1]
+		go d.download(url, output, c)
+	}
+
+	for range entries {
+		err := <-c
+		if err != nil {
+			log.Panic(err)
+		}
+	}
+}
+
+type Downloader struct {
+	HTTPClient http.Client
+}
+
+func (d *Downloader) download(url string, output string, doneChan chan error) {
+	res, err := d.HTTPClient.Get(url)
+	if err != nil {
+		doneChan <- err
+		return
+	}
+	f, err := os.Create(output)
+	if err != nil {
+		doneChan <- err
+		return
+	}
+	_, err = io.Copy(f, res.Body)
+	if err != nil {
+		doneChan <- err
+		return
+	}
+	doneChan <- nil
+}