63 lines
1.4 KiB
Go
63 lines
1.4 KiB
Go
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// Copyright 2012 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build !plan9
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// Package fsnotify provides a platform-independent interface for file system notifications.
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package fsnotify
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import (
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"bytes"
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"fmt"
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)
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// Event represents a single file system notification.
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type Event struct {
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Name string // Relative path to the file or directory.
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Op Op // File operation that triggered the event.
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}
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// Op describes a set of file operations.
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type Op uint32
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// These are the generalized file operations that can trigger a notification.
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const (
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Create Op = 1 << iota
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Write
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Remove
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Rename
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Chmod
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)
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// String returns a string representation of the event in the form
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// "file: REMOVE|WRITE|..."
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func (e Event) String() string {
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// Use a buffer for efficient string concatenation
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var buffer bytes.Buffer
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if e.Op&Create == Create {
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buffer.WriteString("|CREATE")
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}
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if e.Op&Remove == Remove {
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buffer.WriteString("|REMOVE")
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}
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if e.Op&Write == Write {
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buffer.WriteString("|WRITE")
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}
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if e.Op&Rename == Rename {
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buffer.WriteString("|RENAME")
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}
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if e.Op&Chmod == Chmod {
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buffer.WriteString("|CHMOD")
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}
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// If buffer remains empty, return no event names
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if buffer.Len() == 0 {
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return fmt.Sprintf("%q: ", e.Name)
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}
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// Return a list of event names, with leading pipe character stripped
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return fmt.Sprintf("%q: %s", e.Name, buffer.String()[1:])
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}
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