commit a81aa8b06f3b1b076e592772255303bcc507a8db
parent 9b14e95c80e952c160203ff7b3cf368c6f66ba9a
Author: Thuban <thuban@singularity.fr>
Date: Sat, 30 Mar 2013 15:53:56 +0100
Add dynamic_info.c
Diffstat:
2 files changed, 439 insertions(+), 0 deletions(-)
diff --git a/dwm.suckless.org/dwmstatus/dynamic_info.c b/dwm.suckless.org/dwmstatus/dynamic_info.c
@@ -0,0 +1,436 @@
+#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 <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]);
+}
+
+int
+getvolume() {
+ int volume;
+ sscanf(runcmd("amixer | grep -A 6 Master | grep 'Mono: Playback'\
+ | grep -o '[0-9%]*%'"), "%i%%", &volume);
+ return volume;
+
+}
+
+char *
+getmpdstat() {
+ return runcmd("/home/xavier/.Scripts/xfcebar.sh");
+
+}
+
+char *
+readfile(char *base, char *file)
+{
+ char *path, line[513];
+ FILE *fd;
+
+ memset(line, 0, sizeof(line));
+
+ path = smprintf("%s/%s", base, file);
+ fd = fopen(path, "r");
+ if (fd == NULL)
+ return NULL;
+ free(path);
+
+ if (fgets(line, sizeof(line)-1, fd) == NULL)
+ return NULL;
+ fclose(fd);
+
+ return smprintf("%s", line);
+}
+
+
+char *
+tmpinfo()
+{
+ /* usr path as a buffer for any text */
+ char *path = "/tmp/dwmbuf";
+ char line[255];
+ char *toprint = NULL;
+ FILE *fin;
+ FILE *fout;
+ int c = 0;
+
+ fin = fopen(path, "r");
+ if (fin == NULL)
+ return(smprintf("%s"," "));
+
+ fout = fopen("/tmp/.dwmbuf.tmp", "w");
+ if (fout == NULL)
+ {
+ fclose(fin);
+ return(smprintf("%s"," "));
+ }
+
+ while (fgets(line, sizeof(line), fin))
+ {
+ if (c == 0)
+ line[strlen(line)-1]='\0';
+ toprint = smprintf("%s",line);
+ if (c > 0)
+ fputs(line, fout);
+ c += 1;
+ }
+
+ fclose(fin);
+ fclose(fout);
+
+ rename("/tmp/.dwmbuf.tmp", path);
+
+ if (toprint != NULL)
+ return(smprintf("%s",toprint));
+ else
+ return(smprintf("%s"," "));
+}
+
+/*
+ * Linux seems to change the filenames after suspend/hibernate
+ * according to a random scheme. So just check for both possibilities.
+ */
+char *
+getbattery(char *base)
+{
+ char *co;
+ int descap, remcap;
+
+ descap = -1;
+ remcap = -1;
+
+ co = readfile(base, "present");
+ if (co == NULL || co[0] != '1') {
+ if (co != NULL) free(co);
+ return smprintf("?");
+ }
+ free(co);
+
+ co = readfile(base, "charge_full_design");
+ if (co == NULL) {
+ co = readfile(base, "energy_full_design");
+ if (co == NULL)
+ return smprintf("");
+ }
+ sscanf(co, "%d", &descap);
+ free(co);
+
+ co = readfile(base, "charge_now");
+ if (co == NULL) {
+ co = readfile(base, "energy_now");
+ if (co == NULL)
+ return smprintf("");
+ }
+ sscanf(co, "%d", &remcap);
+ free(co);
+
+ if (remcap < 0 || descap < 0)
+ return smprintf("invalid");
+
+ return smprintf("%.0f", ((float)remcap / (float)descap) * 100);
+}
+
+int
+parse_netdev(unsigned long long int *receivedabs, unsigned long long int *sentabs)
+{
+ char *buf;
+ char *eth0start;
+ static int bufsize;
+ FILE *devfd;
+
+ buf = (char *) calloc(255, 1);
+ bufsize = 255;
+ devfd = fopen("/proc/net/dev", "r");
+
+ // ignore the first two lines of the file
+ fgets(buf, bufsize, devfd);
+ fgets(buf, bufsize, devfd);
+
+ while (fgets(buf, bufsize, devfd)) {
+ if ((eth0start = strstr(buf, "wlan0:")) != NULL) {
+
+ // With thanks to the conky project at http://conky.sourceforge.net/
+ sscanf(eth0start + 6, "%llu %*d %*d %*d %*d %*d %*d %*d %llu",\
+ receivedabs, sentabs);
+ fclose(devfd);
+ free(buf);
+ return 0;
+ }
+ }
+ fclose(devfd);
+ free(buf);
+ return 1;
+}
+
+char *
+get_netusage()
+{
+ unsigned long long int oldrec, oldsent, newrec, newsent;
+ double downspeed, upspeed;
+ char *downspeedstr, *upspeedstr;
+ char *retstr;
+ int retval;
+
+ downspeedstr = (char *) malloc(15);
+ upspeedstr = (char *) malloc(15);
+ retstr = (char *) malloc(42);
+
+ retval = parse_netdev(&oldrec, &oldsent);
+ if (retval) {
+ fprintf(stdout, "Error when parsing /proc/net/dev file.\n");
+ exit(1);
+ }
+
+ sleep(1);
+ retval = parse_netdev(&newrec, &newsent);
+ if (retval) {
+ fprintf(stdout, "Error when parsing /proc/net/dev file.\n");
+ exit(1);
+ }
+
+ downspeed = (newrec - oldrec) / 1024.0;
+ if (downspeed > 1024.0) {
+ downspeed /= 1024.0;
+ sprintf(downspeedstr, "%.3f MB/s", downspeed);
+ } else {
+ sprintf(downspeedstr, "%.2f KB/s", downspeed);
+ }
+
+ upspeed = (newsent - oldsent) / 1024.0;
+ if (upspeed > 1024.0) {
+ upspeed /= 1024.0;
+ sprintf(upspeedstr, "%.3f MB/s", upspeed);
+ } else {
+ sprintf(upspeedstr, "%.2f KB/s", upspeed);
+ }
+ sprintf(retstr, "D: %s U: %s", downspeedstr, upspeedstr);
+
+ free(downspeedstr);
+ free(upspeedstr);
+ return retstr;
+}
+
+char *get_nmail(char *directory, char *label)
+{
+ /* directory : Maildir path
+ * return label : number_of_new_mails
+ */
+
+ int n = 0;
+ DIR* dir = NULL;
+ struct dirent* rf = NULL;
+
+ dir = opendir(directory); /* try to open directory */
+ if (dir == NULL)
+ perror("");
+
+ while ((rf = readdir(dir)) != NULL) /*count number of file*/
+ {
+ if (strcmp(rf->d_name, ".") != 0 &&
+ strcmp(rf->d_name, "..") != 0)
+ n++;
+ }
+ closedir(dir);
+
+ if (n == 0)
+ return smprintf("");
+ else
+ return smprintf("%s%d",label, n);
+
+}
+
+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);
+}
+
+char *get_freespace(char *mntpt){
+ struct statvfs data;
+ double total, used = 0;
+
+ if ( (statvfs(mntpt, &data)) < 0){
+ fprintf(stderr, "can't get info on disk.\n");
+ return("?");
+ }
+ total = (data.f_blocks * data.f_frsize);
+ used = (data.f_blocks - data.f_bfree) * data.f_frsize ;
+ return(smprintf("%.1f", (used/total*100)));
+}
+
+
+int
+main(void)
+{
+ char *status = NULL;
+ char *avgs = NULL;
+ char *tmprs = NULL;
+ char *bat = NULL;
+ //char *netstats = NULL;
+ char *mail_laposte = NULL;
+ char *mail_fac = NULL;
+ char *mail_lavabit = NULL;
+ char *mail_tl = NULL;
+ char *rootfs = NULL;
+ char *homefs = NULL;
+ time_t count5min = 0;
+ time_t count60 = 0;
+ time_t count5 = 0;
+ int volume = 0;
+ char *mpd = NULL;
+ char *info = 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(bat);
+ free(info);
+ tmprs = mktimes("%d/%m/%y %H:%M", tzparis);
+ bat = getbattery("/sys/class/power_supply/BAT0/");
+ info = tmpinfo();
+ }
+ if (runevery(&count5, 5)){
+ free(homefs);
+ free(rootfs);
+ homefs = get_freespace("/home");
+ rootfs = get_freespace("/");
+ }
+ /* checks mail every 5 minutes */
+ if (runevery(&count5min, 300) )
+ {
+ free(mail_laposte);
+ free(mail_fac);
+ free(mail_lavabit);
+ free(mail_tl);
+ mail_laposte = get_nmail("/home/xavier/Maildir/fac/new", " Fac:");
+ mail_fac = get_nmail("/home/xavier/Maildir/lavabit/new", " Lavabit:");
+ mail_lavabit = get_nmail("/home/xavier/Maildir/toilelibre/new", " TL:");
+ mail_tl = get_nmail("/home/xavier/Maildir/laposte/new", " Laposte:");
+ }
+ /* checks every second */
+ avgs = loadavg();
+ //netstats = get_netusage();
+ volume = getvolume();
+ mpd = getmpdstat();
+
+ status = smprintf("%s %s %s%s%s%s | /:%s% /home:%s% | B:%s% | %s | V:%i%% | %s",
+ info, mpd,
+ mail_tl, mail_fac, mail_lavabit, mail_laposte,
+ rootfs, homefs, bat, avgs, volume, tmprs);
+ setstatus(status);
+ free(avgs);
+ free(mpd);
+ free(status);
+ }
+
+ XCloseDisplay(dpy);
+
+ return 0;
+}
+
diff --git a/dwm.suckless.org/dwmstatus/index.md b/dwm.suckless.org/dwmstatus/index.md
@@ -36,6 +36,9 @@ add them here as file or as code example.
* [Counting number of mails in a Maildir/new](mail_counter.c)
* [Get disk usage and execute some check at different moments](diskspace_timechk.c) : Because you don't want to check new mails every second
* [Detecting Man-In-The-Middle](dwmstatus-mitm.c)
+* [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.
Questions
---------
