70 lines
1.5 KiB
Go
70 lines
1.5 KiB
Go
package fs
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import (
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"path/filepath"
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"strings"
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)
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const (
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ExtJPEG = ".jpg"
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ExtPNG = ".png"
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ExtDNG = ".dng"
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ExtTHM = ".thm"
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ExtAVC = ".avc"
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ExtHEVC = ".hevc"
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ExtMP4 = ".mp4"
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ExtYAML = ".yml"
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)
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// Ext returns all extension of a file name including the dots.
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func Ext(name string) string {
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ext := filepath.Ext(name)
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name = StripExt(name)
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if Extensions.Known(name) {
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ext = filepath.Ext(name) + ext
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}
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return ext
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}
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// NormalizedExt returns the file extension without dot and in lowercase.
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func NormalizedExt(fileName string) string {
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if dot := strings.LastIndex(fileName, "."); dot != -1 && len(fileName[dot+1:]) >= 1 {
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return strings.ToLower(fileName[dot+1:])
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}
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return ""
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}
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// LowerExt returns the file name extension with dot in lower case.
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func LowerExt(fileName string) string {
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if fileName == "" {
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return ""
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}
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return strings.ToLower(filepath.Ext(fileName))
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}
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// TrimExt removes unwanted characters from file extension strings, and makes it lowercase for comparison.
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func TrimExt(ext string) string {
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return strings.ToLower(strings.Trim(ext, " .,;:“”'`\""))
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}
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// StripExt removes the file type extension from a file name (if any).
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func StripExt(name string) string {
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if end := strings.LastIndex(name, "."); end != -1 {
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name = name[:end]
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}
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return name
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}
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// StripKnownExt removes all known file type extension from a file name (if any).
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func StripKnownExt(name string) string {
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for Extensions.Known(name) {
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name = StripExt(name)
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}
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return name
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}
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