wendy

commit 4ff6468aa26d8c9c7b85ca6cf6eac680e4d1ccc4
parent 5d5db1f773592dcba430662794f3cc33e8084559
Author: Willy Goiffon <dev@z3bra.org>
Date:   Wed,  4 Mar 2020 15:08:10 +0100

Read path from stdin when none provided

Diffstat:
M
wendy.1
 | 
6
+++++-
M
wendy.c
 | 
19
+++++++++++++++++++

2 files changed, 24 insertions(+), 1 deletion(-)
diff --git a/wendy.1 b/wendy.1
@@ -35,7 +35,11 @@ default: IN_CREATE|IN_DELETE|IN_DELETE_SELF|IN_MODIFY|IN_MOVE|IN_MOVE_SELF|IN_CL
 Specifies the file or directory to watch events in. You can specify multiple
 files by providing the
 .Fl w
-flag multiple times.
+flag multiple times. If no watcher is added with the -w flag,
+.Nm
+will read path names from
+.Ar stdin ,
+one per line.
 .El
 .Sh MASKS
 The mask is a numeric value passed to inotify to specify the events that should
diff --git a/wendy.c b/wendy.c
@@ -87,6 +87,22 @@ watch(int fd, char *pathname, int mask)
 	return w;
 }
 
+int
+watchstream(int fd, FILE *stream, int mask)
+{
+	ssize_t l, n = 0;
+	char *p = NULL;
+
+	while (getline(&p, &n, stream) > 0) {
+		l = strlen(p);
+		p[l-1] = '\0';
+		watch(fd, p, mask);
+	}
+	free(p);
+
+	return 0;
+}
+
 char *
 wdpath(struct inotify_event *e, struct watcher *w)
 {
@@ -143,6 +159,9 @@ main (int argc, char **argv)
 	if (dflag)
 		mask |= IN_ONLYDIR;
 
+	if (SLIST_EMPTY(&head))
+		watchstream(fd, stdin, mask);
+
 	while (!SLIST_EMPTY(&head) && (off || (len=read(fd, buf, EVSZ))>0)) {
 
 		/* cast buffer into the event structure */