🎉 Initial implementation using fyne v1

internal/scraper/imagescraper.go

@@ -0,0 +1,81 @@
+package main
+
+import (
+	"encoding/base64"
+	"encoding/json"
+	"fmt"
+	"github.com/PuerkitoBio/goquery"
+	"log"
+	"net/http"
+	"os"
+	"path"
+	"strings"
+)
+
+type gitmojiEntry struct {
+	Emoji string `json:"emoji"`
+	Name string `json:"name"`
+}
+
+type gitmojiData struct {
+	Gitmojis []gitmojiEntry `json:"gitmojis"`
+}
+
+const baseDir = "../../data/images"
+
+func main() {
+	os.RemoveAll(baseDir)
+	os.MkdirAll(baseDir, 0755)
+
+	data := gitmojiData{}
+	f, err := os.Open("../../data/gitmojis.json")
+	if err != nil {
+		log.Fatal("cannot open data:", err)
+	}
+	err = json.NewDecoder(f).Decode(&data)
+	f.Close()
+	if err != nil {
+		log.Fatal("cannot decode gitmojis:", err)
+	}
+
+	resp, err := http.DefaultClient.Get("https://unicode.org/emoji/charts/emoji-list.html")
+	if err != nil {
+		log.Fatal("cannot get emoji list:", err)
+	}
+	if resp.StatusCode != http.StatusOK {
+		log.Fatal("unexpected status getting emoji list:", resp.StatusCode)
+	}
+	doc, err := goquery.NewDocumentFromReader(resp.Body)
+	resp.Body.Close()
+	if err != nil {
+		log.Fatal("cannot parse emojis:", err)
+	}
+
+	for _, entry := range data.Gitmojis {
+		var er rune
+		for _, r := range entry.Emoji {
+			er = r
+			break
+		}
+		src := findImage(doc, er)
+		b, err := base64.StdEncoding.DecodeString(src)
+		if err != nil {
+			log.Println("cannot decode image for ", entry.Name, ": ", err)
+			continue
+		}
+		f, err := os.Create(path.Join(baseDir, entry.Name + ".png"))
+		if err != nil {
+			log.Println("cannot create image for ", entry.Name, ": ", err)
+			continue
+		}
+		f.Write(b)
+		f.Close()
+	}
+}
+
+const imagePrefix = "data:image/png;base64,"
+
+func findImage(doc *goquery.Document, emoji rune) string {
+	src := doc.Find(fmt.Sprintf("img[alt='%s']", string(emoji))).AttrOr("src", "")
+	return strings.TrimPrefix(src, imagePrefix)
+}