Some cleanup

fileio.go

@@ -0,0 +1,114 @@
+package main
+
+import (
+	"fmt"
+	"io"
+	"os"
+	"path/filepath"
+)
+
+func CopyDirectory(scrDir, dest string) error {
+	entries, err := os.ReadDir(scrDir)
+	if err != nil {
+		return err
+	}
+	for _, entry := range entries {
+		sourcePath := filepath.Join(scrDir, entry.Name())
+		destPath := filepath.Join(dest, entry.Name())
+
+		fileInfo, err := os.Stat(sourcePath)
+		if err != nil {
+			return err
+		}
+
+		switch fileInfo.Mode() & os.ModeType {
+		case os.ModeDir:
+			if err := CreateIfNotExists(destPath, 0755); err != nil {
+				return err
+			}
+			if err := CopyDirectory(sourcePath, destPath); err != nil {
+				return err
+			}
+		case os.ModeSymlink:
+			if err := CopySymLink(sourcePath, destPath); err != nil {
+				return err
+			}
+		default:
+			if err := Copy(sourcePath, destPath); err != nil {
+				return err
+			}
+		}
+
+		fInfo, err := entry.Info()
+		if err != nil {
+			return err
+		}
+
+		isSymlink := fInfo.Mode()&os.ModeSymlink != 0
+		if !isSymlink {
+			if err := os.Chmod(destPath, fInfo.Mode()); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
+func Copy(srcFile, dstFile string) error {
+	out, err := os.Create(dstFile)
+	if err != nil {
+		return err
+	}
+
+	defer out.Close()
+
+	in, err := os.Open(srcFile)
+	defer in.Close()
+	if err != nil {
+		return err
+	}
+
+	_, err = io.Copy(out, in)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func Exists(filePath string) bool {
+	if _, err := os.Stat(filePath); os.IsNotExist(err) {
+		return false
+	}
+
+	return true
+}
+
+func CreateIfNotExists(dir string, perm os.FileMode) error {
+	if Exists(dir) {
+		return nil
+	}
+
+	if err := os.MkdirAll(dir, perm); err != nil {
+		return fmt.Errorf("failed to create directory: '%s', error: '%s'", dir, err.Error())
+	}
+
+	return nil
+}
+
+func CopySymLink(source, dest string) error {
+	link, err := os.Readlink(source)
+	if err != nil {
+		return err
+	}
+	return os.Symlink(link, dest)
+}
+
+func deleteTgz() {
+	files, err := filepath.Glob("ddragon*.tgz")
+	checkError(err)
+	for _, file := range files {
+		fmt.Printf("Deleting %s", file)
+		os.RemoveAll(file)
+	}
+}