75 lines
1.6 KiB
Go
75 lines
1.6 KiB
Go
package main
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import (
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"log"
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"os"
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"runtime"
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"strings"
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"github.com/rjeczalik/notify"
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)
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type listener struct {
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folder string
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update func(string) error
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clean func(string) error
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}
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func (l *listener) listen() {
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cwd, err := os.Getwd()
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if err != nil {
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log.Fatal("could not get current working directory for listener!")
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}
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cwd = cwd + "/"
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c := make(chan notify.EventInfo, 1)
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var events []notify.Event
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// inotify events prevent double-firing of
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// certain events in Linux.
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if runtime.GOOS == "linux" {
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events = []notify.Event{
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notify.InCloseWrite,
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notify.InMovedFrom,
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notify.InMovedTo,
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notify.InDelete,
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}
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} else {
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events = []notify.Event{
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notify.Create,
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notify.Remove,
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notify.Rename,
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notify.Write,
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}
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}
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err = notify.Watch(l.folder, c, events...)
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if err != nil {
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log.Fatalf("Could not setup watcher for folder %s: %s", l.folder, err)
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}
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defer notify.Stop(c)
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for {
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ei := <-c
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log.Printf("event: %s", ei.Event())
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switch ei.Event() {
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case notify.InCloseWrite, notify.InMovedTo, notify.Create, notify.Rename, notify.Write:
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filePath := strings.TrimPrefix(ei.Path(), cwd)
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log.Printf("updating file %s", filePath)
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err := l.update(strings.TrimPrefix(filePath, l.folder))
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if err != nil {
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log.Printf("watcher update action on %s failed: %v", filePath, err)
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}
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case notify.InMovedFrom, notify.InDelete, notify.Remove:
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filePath := strings.TrimPrefix(ei.Path(), cwd)
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log.Printf("cleaning file %s", filePath)
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err := l.clean(strings.TrimPrefix(filePath, l.folder))
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if err != nil {
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log.Printf("watcher clean action on %s failed: %v", filePath, err)
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}
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}
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}
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}
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