hugo copy 源码
hugo copy 代码
文件路径：/common/hugio/copy.go
// Copyright 2019 The Hugo Authors. All rights reserved.
//
// 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 hugio
import (
"fmt"
"io"
"path/filepath"
"github.com/spf13/afero"
)
// CopyFile copies a file.
func CopyFile(fs afero.Fs, from, to string) error {
sf, err := fs.Open(from)
if err != nil {
return err
}
defer sf.Close()
df, err := fs.Create(to)
if err != nil {
return err
}
defer df.Close()
_, err = io.Copy(df, sf)
if err != nil {
return err
}
si, err := fs.Stat(from)
if err != nil {
err = fs.Chmod(to, si.Mode())
if err != nil {
return err
}
}
return nil
}
// CopyDir copies a directory.
func CopyDir(fs afero.Fs, from, to string, shouldCopy func(filename string) bool) error {
fi, err := fs.Stat(from)
if err != nil {
return err
}
if !fi.IsDir() {
return fmt.Errorf("%q is not a directory", from)
}
err = fs.MkdirAll(to, 0777) // before umask
if err != nil {
return err
}
entries, _ := afero.ReadDir(fs, from)
for _, entry := range entries {
fromFilename := filepath.Join(from, entry.Name())
toFilename := filepath.Join(to, entry.Name())
if entry.IsDir() {
if shouldCopy != nil && !shouldCopy(fromFilename) {
continue
}
if err := CopyDir(fs, fromFilename, toFilename, shouldCopy); err != nil {
return err
}
} else {
if err := CopyFile(fs, fromFilename, toFilename); err != nil {
return err
}
}
}
return nil
}
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