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file_util.go
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package webutility |
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import ( "bytes" |
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"fmt" |
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"io" "io/ioutil" "os" "strings" ) |
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// ReadFileContent ... |
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func ReadFileContent(path string) ([]byte, error) {
f, err := os.Open(path)
if err != nil {
return nil, err
}
defer f.Close()
buf := &bytes.Buffer{}
if _, err = io.Copy(buf, f); err != nil {
return nil, err
}
return buf.Bytes(), nil
}
// ReadFileLines ...
func ReadFileLines(path string) ([]string, error) {
f, err := os.Open(path)
if err != nil {
return nil, err
}
defer f.Close()
var s strings.Builder
if _, err = io.Copy(&s, f); err != nil {
return nil, err
}
lines := strings.Split(s.String(), "
")
for i := range lines {
lines[i] = strings.TrimRight(lines[i], "\r
")
}
return lines, nil
}
// LinesToFile ...
func LinesToFile(path string, lines []string) error {
content := ""
for _, l := range lines {
content += l + "
"
}
return ioutil.WriteFile(path, []byte(content), 0644) // drw-r--r--
}
// InsertLine ...
func InsertLine(lines *[]string, pos int64, l string) {
tail := append([]string{l}, (*lines)[pos:]...)
*lines = append((*lines)[:pos], tail...)
}
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GetContent
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func WriteFile(path string, content []byte) error {
return ioutil.WriteFile(path, content, 0644) // drw-r--r--
}
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func ListDir(path string) (fnames []string, err error) {
finfo, err := ioutil.ReadDir(path)
if err != nil {
return nil, err
}
for _, f := range finfo {
fnames = append(fnames, f.Name())
}
return fnames, nil
}
func WorkingDir() string {
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path, err := os.Getwd()
if err != nil {
fmt.Printf("couldn't get working directory: %s
", err.Error())
}
return path
}
func FileExtension(path string) string {
parts := strings.Split(path, ".") // because name can contain dots
if len(parts) < 2 {
return ""
}
return "." + parts[len(parts)-1]
}
func DeleteFile(path string) error {
return os.Remove(path)
}
// DirectoryFromPath ...
func DirectoryFromPath(path string) (dir string) {
parts := strings.Split(path, "/")
if len(parts) == 1 {
return ""
}
dir = parts[0]
for _, p := range parts[1 : len(parts)-1] {
dir += "/" + p
}
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return dir } |
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// FileExists ...
func FileExists(path string) bool {
temp, err := os.Open(path)
defer temp.Close()
if err != nil {
return false
}
return true
}
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