dbtester/agent/util.go

75 lines
1.6 KiB
Go

// Copyright 2016 CoreOS, Inc.
//
// 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 agent
import (
"os"
"runtime"
)
func openToAppend(fpath string) (*os.File, error) {
f, err := os.OpenFile(fpath, os.O_RDWR|os.O_APPEND, 0777)
if err != nil {
f, err = os.Create(fpath)
if err != nil {
return f, err
}
}
return f, nil
}
func toFile(txt, fpath string) error {
f, err := os.OpenFile(fpath, os.O_RDWR|os.O_TRUNC, 0777)
if err != nil {
f, err = os.Create(fpath)
if err != nil {
return err
}
}
defer f.Close()
_, err = f.WriteString(txt)
return err
}
func homeDir() string {
if runtime.GOOS == "windows" {
home := os.Getenv("HOMEDRIVE") + os.Getenv("HOMEPATH")
if home == "" {
home = os.Getenv("USERPROFILE")
}
return home
}
return os.Getenv("HOME")
}
// exist returns true if the file or directory exists.
func exist(fpath string) bool {
st, err := os.Stat(fpath)
if err != nil {
if os.IsNotExist(err) {
return false
}
}
if st.IsDir() {
return true
}
if _, err := os.Stat(fpath); err != nil {
if os.IsNotExist(err) {
return false
}
}
return true
}