Initial commit

filerename/main.go

@@ -0,0 +1,54 @@
+package main
+
+import (
+	"fmt"
+	"io"
+	"io/ioutil"
+	"log"
+	"os"
+	"strings"
+)
+
+func main() {
+	files, err := ioutil.ReadDir("./")
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	for _, f := range files {
+		currentName := f.Name()
+		if strings.HasSuffix(currentName, ".png") {
+			if strings.Contains(currentName, "_") {
+				tmpSplit := strings.Split(currentName, "_")
+				newName := fmt.Sprintf("combined/%s", tmpSplit[len(tmpSplit)-1])
+				if _, err := os.Stat(newName); os.IsNotExist(err) {
+					err := copyFile(currentName, newName)
+					if err != nil {
+						log.Printf("failed to rename '%s' to '%s': %v", currentName, newName, err)
+					}
+				}
+
+			}
+		}
+	}
+}
+
+func copyFile(src, dst string) error {
+	in, err := os.Open(src)
+	if err != nil {
+		return err
+	}
+	defer in.Close()
+
+	out, err := os.Create(dst)
+	if err != nil {
+		return err
+	}
+	defer out.Close()
+
+	_, err = io.Copy(out, in)
+	if err != nil {
+		return err
+	}
+	return out.Close()
+}