init

Signed-off-by: storyicon <yuanchao@bilibili.com>

pkg/util/file.go

@@ -0,0 +1,131 @@
+// Copyright 2021 storyicon@foxmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// 	http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package util
+
+import (
+	"io"
+	"io/fs"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+
+	"github.com/bmatcuk/doublestar"
+	filecopy "github.com/otiai10/copy"
+	"github.com/pkg/errors"
+)
+
+// MatchPath is used to match path with specified pattern
+func MatchPath(pattern string, path string) (bool, error) {
+	return doublestar.PathMatch(pattern, path)
+}
+
+// CopyDirectory is used to copy directory
+// If dst already exists, it will be merged
+func CopyDirectory(src, dst string) error {
+	return filecopy.Copy(src, dst)
+}
+
+// CopyFile is used to copy file from src to dst
+func CopyFile(src, dst string) error {
+	sourceFileStat, err := os.Stat(src)
+	if err != nil {
+		return err
+	}
+	if !sourceFileStat.Mode().IsRegular() {
+		return errors.Errorf("%s is not a regular file", src)
+	}
+	source, err := os.Open(src)
+	if err != nil {
+		return err
+	}
+	defer source.Close()
+	if err := os.MkdirAll(filepath.Dir(dst), fs.ModePerm); err != nil {
+		return err
+	}
+	destination, err := os.Create(dst)
+	if err != nil {
+		return err
+	}
+	defer destination.Close()
+	_, err = io.Copy(destination, source)
+	return err
+}
+
+// IsFileExists is used to check whether the file exists
+func IsFileExists(path string) (bool, error) {
+	info, err := os.Stat(path)
+	if err != nil {
+		if os.IsNotExist(err) {
+			return false, nil
+		}
+		return false, err
+	}
+	if info.IsDir() {
+		return false, errors.Errorf("%s is not a file", path)
+	}
+	return true, nil
+}
+
+// IsDirExists is used to check whether the dir exists
+func IsDirExists(path string) (bool, error) {
+	info, err := os.Stat(path)
+	if err != nil {
+		if os.IsNotExist(err) {
+			return false, nil
+		}
+		return false, err
+	}
+	if !info.IsDir() {
+		return false, errors.Errorf("%s is not a directory", path)
+	}
+	return true, nil
+}
+
+// GetFilesWithExtRecursively is used to recursively list files with a specific suffix
+// expectExt should contain the prefix '.'
+func GetFilesWithExtRecursively(target string, targetExt string) ([]string, error) {
+	var data []string
+	err := filepath.Walk(target, func(path string, info fs.FileInfo, err error) error {
+		if info.IsDir() {
+			return nil
+		}
+		ext := filepath.Ext(path)
+		if ext == targetExt {
+			data = append(data, path)
+		}
+		return nil
+	})
+	return data, err
+}
+
+// GetFilesWithExtRecursively is used to list files with a specific suffix
+// expectExt should contain the prefix '.'
+func GetFilesWithExt(dir string, targetExt string) ([]string, error) {
+	children, err := ioutil.ReadDir(dir)
+	if err != nil {
+		return nil, err
+	}
+	var data []string
+	for _, child := range children {
+		if child.IsDir() {
+			continue
+		}
+		if ext := filepath.Ext(child.Name()); ext != targetExt {
+			continue
+		}
+		data = append(data, filepath.Join(dir, child.Name()))
+	}
+	return data, nil
+}