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file.go
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file.go
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package utils
import (
"io"
"os"
"path/filepath"
"gopkg.in/yaml.v3"
)
func GetExecDir() string {
execDir, err := filepath.Abs(filepath.Dir(os.Args[0]))
if err != nil {
return ""
}
return execDir
}
func GetExecName() string {
return filepath.Base(os.Args[0])
}
func CopyFile(srcFile, dstFile string) error {
const bufferSize = 1024 * 1024
buf := make([]byte, bufferSize)
return CopyFileWithBuffer(srcFile, dstFile, buf)
}
func CopyFileWithBuffer(srcFile, dstFile string, buf []byte) error {
src, err := os.Open(srcFile)
if err != nil {
return err
}
defer func(src *os.File) {
_ = src.Close()
}(src)
dst, err := os.Create(dstFile)
if err != nil {
return err
}
defer func(dst *os.File) {
_ = dst.Close()
}(dst)
for {
n, err := src.Read(buf)
if err != nil && err != io.EOF {
return err
}
if n == 0 {
break
}
if _, err := dst.Write(buf[:n]); err != nil {
return err
}
}
return nil
}
func WriteYamlFile(filePath string, data any) error {
f, err := os.Create(filePath)
if err != nil {
return err
}
defer func(f *os.File) {
_ = f.Close()
}(f)
enc := yaml.NewEncoder(f)
err = enc.Encode(data)
if err != nil {
return err
}
return enc.Close()
}
func ReadYamlFile(filePath string, data any) error {
f, err := os.Open(filePath)
if err != nil {
return err
}
defer func(f *os.File) {
_ = f.Close()
}(f)
dec := yaml.NewDecoder(f)
return dec.Decode(data)
}