Add option to output only once and exit

diff --git a/slstatus.1 b/slstatus.1
index da1a99a..9517fab 100644 (file)
--- a/slstatus.1
+++ b/slstatus.1
@@ -6,7 +6,7 @@
 .Nd suckless status monitor
 .Sh SYNOPSIS
 .Nm
 .Nd suckless status monitor
 .Sh SYNOPSIS
 .Nm

-.Op Fl s
+.Op Fl so

 .Sh DESCRIPTION
 .Nm
 is a suckless status monitor for window managers that use WM_NAME (e.g. dwm) or
 .Sh DESCRIPTION
 .Nm
 is a suckless status monitor for window managers that use WM_NAME (e.g. dwm) or


@@ -18,6 +18,8 @@ outputs to WM_NAME.
 .Bl -tag -width Ds
 .It Fl s
 Write to stdout instead of WM_NAME.
 .Bl -tag -width Ds
 .It Fl s
 Write to stdout instead of WM_NAME.

+.It Fl o
+Write only once and exit.

 .El
 .Sh CUSTOMIZATION
 .Nm
 .El
 .Sh CUSTOMIZATION
 .Nm

diff --git a/slstatus.c b/slstatus.c
index 3222b02..b3abafb 100644 (file)
--- a/slstatus.c
+++ b/slstatus.c
@@ -42,7 +42,7 @@ difftimespec(struct timespec *res, struct timespec *a, struct timespec *b)
 static void
 usage(void)
 {
 static void
 usage(void)
 {

-       die("usage: %s [-s]", argv0);
+       die("usage: %s [-so]", argv0);

 }
 
 int
 }
 
 int


@@ -51,15 +51,18 @@ main(int argc, char *argv[])
        struct sigaction act;
        struct timespec start, current, diff, intspec, wait;
        size_t i, len;
        struct sigaction act;
        struct timespec start, current, diff, intspec, wait;
        size_t i, len;

-       int sflag, ret;
+       int sflag, oflag, ret;

        char status[MAXLEN];
        const char *res;
 
        char status[MAXLEN];
        const char *res;
 

-       sflag = 0;
+       sflag = oflag = 0;

        ARGBEGIN {
                case 's':
                        sflag = 1;
                        break;
        ARGBEGIN {
                case 's':
                        sflag = 1;
                        break;

+               case 'o':
+                       oflag = 1;
+                       break;

                default:
                        usage();
        } ARGEND
                default:
                        usage();
        } ARGEND


@@ -107,6 +110,10 @@ main(int argc, char *argv[])
                        XFlush(dpy);
                }
 
                        XFlush(dpy);
                }
 

+               if (oflag) {
+                       done = 1;
+               }
+

                if (!done) {
                        if (clock_gettime(CLOCK_MONOTONIC, &current) < 0) {
                                die("clock_gettime:");
                if (!done) {
                        if (clock_gettime(CLOCK_MONOTONIC, &current) < 0) {
                                die("clock_gettime:");