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json.go
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json.go
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/*
* Copyright (c) 2019-2022 Abstrium SAS <team (at) pydio.com>
* This file is part of Pydio Cells.
*
* Pydio Cells is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Pydio Cells is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with Pydio Cells. If not, see <http://www.gnu.org/licenses/>.
*
* The latest code can be found at <https://pydio.com>.
*/
package filex
import (
"io"
"os"
"path/filepath"
)
// Read reads the content of a file
func Read(filename string, readOnly ...bool) ([]byte, error) {
if len(readOnly) > 0 && readOnly[0] {
// Make sure to not create an empty file if it does not exists
if _, e := os.Stat(filename); e != nil && os.IsNotExist(e) {
return nil, e
}
}
fh, err := os.OpenFile(filename, os.O_RDONLY|os.O_CREATE, 0644)
if err != nil {
if os.IsNotExist(err) {
return []byte{}, nil
//if err := os.MkdirAll(filepath.Dir(filename), 0755); err != nil {
// return nil, err
//}
//fh, err = os.Create(filename)
//if err != nil {
// return nil, err
//}
} else {
return nil, err
}
}
defer fh.Close()
b, err := io.ReadAll(fh)
if err != nil {
return nil, err
}
return b, nil
}
// Save writes configs to json file
func Save(filename string, b []byte) error {
if err := os.MkdirAll(filepath.Dir(filename), 0755); err != nil {
return err
}
f, err := os.OpenFile(filename, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0755)
if err != nil {
return err
}
defer f.Close()
if _, err := f.WriteString(string(b)); err != nil {
return err
}
return nil
}
// Exists check if a file is present or not
func Exists(filename string) bool {
if _, err := os.Stat(filename); err != nil {
return false
}
return true
}
// WriteIfNotExists writes data directly inside file
func WriteIfNotExists(filename string, data string) (bool, error) {
if Exists(filename) {
return false, nil
}
dst, err := os.Create(filename)
if err != nil {
return false, err
}
defer dst.Close()
_, err = dst.WriteString(data)
if err != nil {
return false, err
}
err = dst.Sync()
if err != nil {
return false, err
}
return true, nil
}