improve console output

2025-12-21 03:34:50 +00:00 · 2018-02-12 23:39:04 +01:00
parent 22df28ae1d
commit 949e206ac1
6 changed files with 200 additions and 156 deletions
--- a/internal/inotify/event.go
+++ b/internal/inotify/event.go
@@ -0,0 +1,88 @@
+package inotify
+
+import (
+	"bytes"
+	"fmt"
+	"log"
+	"strconv"
+	"unsafe"
+
+	"golang.org/x/sys/unix"
+)
+
+var InotifyEvents = map[uint32]string{
+	unix.IN_ACCESS:                          "ACCESS",
+	unix.IN_ATTRIB:                          "ATTRIB",
+	unix.IN_CLOSE_NOWRITE:                   "CLOSE_NOWRITE",
+	unix.IN_CLOSE_WRITE:                     "CLOSE_WRITE",
+	unix.IN_CREATE:                          "CREATE",
+	unix.IN_DELETE:                          "DELETE",
+	unix.IN_DELETE_SELF:                     "DELETE_SELF",
+	unix.IN_MODIFY:                          "MODIFY",
+	unix.IN_MOVED_FROM:                      "MOVED_FROM",
+	unix.IN_MOVED_TO:                        "MOVED_TO",
+	unix.IN_MOVE_SELF:                       "MOVE_SELF",
+	unix.IN_OPEN:                            "OPEN",
+	(unix.IN_ACCESS | unix.IN_ISDIR):        "ACCESS DIR",
+	(unix.IN_ATTRIB | unix.IN_ISDIR):        "ATTRIB DIR",
+	(unix.IN_CLOSE_NOWRITE | unix.IN_ISDIR): "CLOSE_NOWRITE DIR",
+	(unix.IN_CLOSE_WRITE | unix.IN_ISDIR):   "CLOSE_WRITE DIR",
+	(unix.IN_CREATE | unix.IN_ISDIR):        "CREATE DIR",
+	(unix.IN_DELETE | unix.IN_ISDIR):        "DELETE DIR",
+	(unix.IN_DELETE_SELF | unix.IN_ISDIR):   "DELETE_SELF DIR",
+	(unix.IN_MODIFY | unix.IN_ISDIR):        "MODIFY DIR",
+	(unix.IN_MOVED_FROM | unix.IN_ISDIR):    "MOVED_FROM DIR",
+	(unix.IN_MOVE_SELF | unix.IN_ISDIR):     "MODE_SELF DIR",
+	(unix.IN_OPEN | unix.IN_ISDIR):          "OPEN DIR",
+}
+
+type Event struct {
+	name string
+	op   string
+}
+
+func (e Event) String() string {
+	return fmt.Sprintf("%20s | %s", e.op, e.name)
+}
+
+func newEvent(name string, mask uint32) Event {
+	e := Event{name: name}
+	op, ok := InotifyEvents[mask]
+	if !ok {
+		op = strconv.FormatInt(int64(mask), 2)
+	}
+	e.op = op
+	return e
+}
+
+func eventLogger(i *Inotify, buffers chan bufRead) {
+	for bf := range buffers {
+		n := bf.n
+		buf := bf.buf
+
+		if n < unix.SizeofInotifyEvent {
+			// incomplete or erroneous read
+			continue
+		}
+
+		var ptr uint32
+		var name string
+		for ptr <= uint32(n-unix.SizeofInotifyEvent) {
+			sys := (*unix.InotifyEvent)(unsafe.Pointer(&buf[ptr]))
+			ptr += unix.SizeofInotifyEvent
+
+			watcher, ok := i.watchers[int(sys.Wd)]
+			if !ok {
+				continue
+			}
+			name = watcher.dir + "/"
+			if sys.Len > 0 && len(buf) >= int(ptr+sys.Len) {
+				name += string(bytes.TrimRight(buf[ptr:ptr+sys.Len], "\x00"))
+				ptr += sys.Len
+			}
+
+			ev := newEvent(name, sys.Mask)
+			log.Printf("\x1b[32;1mFS: %+v\x1b[0m", ev)
+		}
+	}
+}