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commit 8dbfb2812cd8009447efd37fb34424725adda0c8
parent 99266639047c6a85bf32d82ebc07c1ae4075dcf0
Author: Thuban <thuban@singularity.fr>
Date:   Fri, 26 Apr 2013 22:14:32 +0200

[dwmstatus] uptime informations

Diffstat:
M
dwm.suckless.org/dwmstatus/index.md
 | 
1
+
A
dwm.suckless.org/dwmstatus/uptime.c
 | 
164
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

2 files changed, 165 insertions(+), 0 deletions(-)
diff --git a/dwm.suckless.org/dwmstatus/index.md b/dwm.suckless.org/dwmstatus/index.md
@@ -39,6 +39,7 @@ add them here as file or as code example.
 * [Show line per line the content of a file](dynamic_info.c) : See
   tmpinfo function. It prints line after line the content of
   /tmp/dwmbuf.
+* [Simple function to have uptime](uptime.c)
 
 Questions
 ---------
diff --git a/dwm.suckless.org/dwmstatus/uptime.c b/dwm.suckless.org/dwmstatus/uptime.c
@@ -0,0 +1,164 @@
+#define _BSD_SOURCE
+#define _GNU_SOURCE
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <strings.h>
+#include <sys/time.h>
+#include <sys/sysinfo.h>
+#include <time.h>
+#include <sys/types.h>
+#include <dirent.h>
+#include <sys/statvfs.h>
+
+
+#include <X11/Xlib.h>
+
+char *tzparis = "Europe/Paris";
+
+static Display *dpy;
+
+char *
+smprintf(char *fmt, ...)
+{
+	va_list fmtargs;
+	char *buf = NULL;
+
+	va_start(fmtargs, fmt);
+	if (vasprintf(&buf, fmt, fmtargs) == -1){
+		fprintf(stderr, "malloc vasprintf\n");
+		exit(1);
+    }
+	va_end(fmtargs);
+
+	return buf;
+}
+
+char*
+runcmd(char* cmd) {
+	FILE* fp = popen(cmd, "r");
+	if (fp == NULL) return NULL;
+	char ln[50];
+	fgets(ln, sizeof(ln)-1, fp);
+	pclose(fp);
+	ln[strlen(ln)-1]='\0';
+	return smprintf("%s", ln);
+}
+
+void
+settz(char *tzname)
+{
+	setenv("TZ", tzname, 1);
+}
+
+char *
+mktimes(char *fmt, char *tzname)
+{
+	char buf[129];
+	time_t tim;
+	struct tm *timtm;
+
+	memset(buf, 0, sizeof(buf));
+	settz(tzname);
+	tim = time(NULL);
+	timtm = localtime(&tim);
+	if (timtm == NULL) {
+		perror("localtime");
+		exit(1);
+	}
+
+	if (!strftime(buf, sizeof(buf)-1, fmt, timtm)) {
+		fprintf(stderr, "strftime == 0\n");
+		exit(1);
+	}
+
+	return smprintf(buf);
+}
+
+void
+setstatus(char *str)
+{
+	XStoreName(dpy, DefaultRootWindow(dpy), str);
+	XSync(dpy, False);
+}
+
+char *
+loadavg(void)
+{
+	double avgs[3];
+
+	if (getloadavg(avgs, 3) < 0) {
+		perror("getloadavg");
+		exit(1);
+	}
+
+	return smprintf("%.2f %.2f %.2f", avgs[0], avgs[1], avgs[2]);
+}
+
+
+char *
+up() {
+    struct sysinfo info;
+    int h,m = 0;
+    sysinfo(&info);
+    h = info.uptime/3600;
+    m = info.uptime/60;
+    return smprintf("%dh %dm",h,m);
+}
+
+
+int runevery(time_t *ltime, int sec){
+    /* return 1 if sec elapsed since last run
+     * else return 0 
+    */
+    time_t now = time(NULL);
+    
+    if ( difftime(now, *ltime ) >= sec)
+    {
+        *ltime = now;
+        return(1);
+    }
+    else 
+        return(0);
+}
+
+int
+main(void)
+{
+	char *status = NULL;
+	char *tmprs = NULL;
+	char *avgs = NULL;
+    time_t count60 = 0;
+    char *uptm = NULL;
+    
+	if (!(dpy = XOpenDisplay(NULL))) {
+		fprintf(stderr, "dwmstatus: cannot open display.\n");
+		return 1;
+	}
+
+	for (;;sleep(1)) {
+	    /* checks every minutes */
+	    if ( runevery(&count60, 60) )
+        {
+            free(tmprs);
+            free(uptm);
+            tmprs = mktimes("%d/%m/%y %H:%M", tzparis);
+            uptm = up();
+        }
+        /* checks every second */
+		avgs = loadavg();
+
+		status = smprintf("%s | Up:%s | %s",
+				 avgs, uptm, tmprs);
+		setstatus(status);
+		free(avgs);
+		free(status);
+	}
+
+	XCloseDisplay(dpy);
+
+	return 0;
+}
+