HomeWork_3

Homework_3/cmd/loadData/go.mod

@@ -0,0 +1,3 @@
+module gitea.zacksolutions.dev/Zakaria
+
+go 1.27.1

Homework_3/cmd/loadData/xkcd-load.go

@@ -0,0 +1,73 @@
+package main
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+)
+
+func getComic(i int) []byte {
+	url := fmt.Sprintf("https://xkcd.com/%d/info.0.json", i)
+	resp, err := http.Get(url)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Can't reach: %s", err)
+		os.Exit(-1)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+
+		fmt.Fprintf(os.Stderr, "Skipping %d: got %d\n", i, resp.StatusCode)
+		return nil
+	}
+
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "invalid body %s\n", err)
+	}
+	return body
+}
+
+func main() {
+	var (
+		output io.WriteCloser = os.Stdout
+		err    error
+		cnt    int
+		fails  int
+		data   []byte
+	)
+
+	if len(os.Args) > 1 {
+		output, err = os.Create(os.Args[1])
+		if err != nil {
+			fmt.Fprintln(os.Stderr, err)
+			os.Exit(-1)
+		}
+
+		defer output.Close()
+
+		fmt.Fprint(output, "[")
+		defer fmt.Fprint(output, "]")
+
+	}
+	for i := 1; fails < 2; i++ {
+		if data = getComic(i); data == nil {
+			fails++
+			continue
+		}
+		if cnt > 0 {
+			fmt.Fprint(output, ",")
+		}
+
+		_, err := io.Copy(output, bytes.NewBuffer(data))
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "STOPPED: %s\n", err)
+			os.Exit(-1)
+		}
+		fails = 0
+		cnt++
+	}
+	fmt.Fprintf(os.Stderr, "Read %d comics\n", cnt)
+}