Merge pull request #6 from sahne/master

minor cleanups and sanity checks
This commit is contained in:
Aaron Marcher 2016-03-10 14:50:11 +01:00
commit e046ee18f9
4 changed files with 45 additions and 27 deletions

View File

@ -19,7 +19,7 @@ options:
${OBJ}: config.h config.mk
config.h:
config.h: config.def.h
@echo creating $@ from config.def.h
@cp config.def.h $@

View File

@ -17,6 +17,9 @@ static const char batteryfullfile[] = "/sys/class/power_supply/BAT0/energy_full_
/* time */
static const char timeformat[] = "%y-%m-%d %H:%M:%S";
/* bar update interval in seconds */
static unsigned int update_interval = 10;
/* statusbar
Possible arguments:
- battery (battery percentage)

View File

@ -15,7 +15,7 @@ INCS = -I. -I/usr/include -I${X11INC}
LIBS = -L/usr/lib -lc -L${X11LIB} -lX11 -lasound
# flags
CPPFLAGS = -DVERSION=\"${VERSION}\"
CPPFLAGS = -DVERSION=\"${VERSION}\" -D_GNU_SOURCE
CFLAGS = -g -std=c99 -pedantic -Wall -O0 ${INCS} ${CPPFLAGS}
#CFLAGS = -std=c99 -pedantic -Wall -Os ${INCS} ${CPPFLAGS}
LDFLAGS = -g ${LIBS}

View File

@ -2,10 +2,13 @@
/* global libraries */
#include <alsa/asoundlib.h>
#include <fcntl.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <time.h>
#include <unistd.h>
#include <X11/Xlib.h>
@ -15,6 +18,7 @@
/* functions */
void setstatus(char *str);
int config_check();
char *smprintf(char *fmt, ...);
char *get_battery();
char *get_cpu_temperature();
@ -40,26 +44,31 @@ char *
smprintf(char *fmt, ...)
{
va_list fmtargs;
char *ret;
int len;
char *ret = NULL;
va_start(fmtargs, fmt);
len = vsnprintf(NULL, 0, fmt, fmtargs);
va_end(fmtargs);
ret = malloc(++len);
if (ret == NULL) {
fprintf(stderr, "Malloc error.");
exit(1);
}
va_start(fmtargs, fmt);
vsnprintf(ret, len, fmt, fmtargs);
if (vasprintf(&ret, fmt, fmtargs) < 0)
return NULL;
va_end(fmtargs);
return ret;
}
#define CHECK_FILE(X,Y) do { \
if (stat(X,&Y) < 0) return -1; \
if (!S_ISREG(Y.st_mode)) return -1; \
} while (0);
/* check configured paths */
int
config_check()
{
struct stat fs;
CHECK_FILE(batterynowfile, fs);
CHECK_FILE(batteryfullfile, fs);
CHECK_FILE(tempfile, fs);
return 0;
}
/* battery percentage */
char *
get_battery()
@ -70,7 +79,7 @@ get_battery()
/* open battery now file */
if (!(fp = fopen(batterynowfile, "r"))) {
fprintf(stderr, "Error opening battery file.");
exit(1);
return smprintf("n/a");
}
/* read value */
@ -82,7 +91,7 @@ get_battery()
/* open battery full file */
if (!(fp = fopen(batteryfullfile, "r"))) {
fprintf(stderr, "Error opening battery file.");
exit(1);
return smprintf("n/a");
}
/* read value */
@ -108,7 +117,7 @@ get_cpu_temperature()
/* open temperature file */
if (!(fp = fopen(tempfile, "r"))) {
fprintf(stderr, "Could not open temperature file.\n");
exit(1);
return smprintf("n/a");
}
/* extract temperature */
@ -132,7 +141,7 @@ get_cpu_usage()
/* open stat file */
if (!(fp = fopen("/proc/stat","r"))) {
fprintf(stderr, "Error opening stat file.");
exit(1);
return smprintf("n/a");
}
/* read values */
@ -147,7 +156,7 @@ get_cpu_usage()
/* open stat file */
if (!(fp = fopen("/proc/stat","r"))) {
fprintf(stderr, "Error opening stat file.");
exit(1);
return smprintf("n/a");
}
/* read values */
@ -175,7 +184,7 @@ get_datetime()
time(&tm);
if(!strftime(buf, bufsize, timeformat, localtime(&tm))) {
fprintf(stderr, "Strftime failed.\n");
exit(1);
return smprintf("n/a");
}
/* return time */
@ -193,7 +202,7 @@ get_ram_usage()
/* open meminfo file */
if (!(fp = fopen("/proc/meminfo", "r"))) {
fprintf(stderr, "Error opening meminfo file.");
exit(1);
return smprintf("n/a");
}
/* read the values */
@ -274,7 +283,7 @@ get_wifi_signal()
/* open wifi file */
if(!(fp = fopen(path, "r"))) {
fprintf(stderr, "Error opening wifi operstate file.");
exit(1);
return smprintf("n/a");
}
/* read the status */
@ -285,13 +294,13 @@ get_wifi_signal()
/* check if interface down */
if(strcmp(status, "up\n") != 0){
return "n/a";
return smprintf("n/a");
}
/* open wifi file */
if (!(fp = fopen("/proc/net/wireless", "r"))) {
fprintf(stderr, "Error opening wireless file.");
exit(1);
return smprintf("n/a");
}
/* extract the signal strength */
@ -325,6 +334,11 @@ main()
char *volume = NULL;
char *wifi_signal = NULL;
/* check config for sanity */
if (config_check() < 0) {
fprintf(stderr, "Config error, please check paths and recompile\n");
exit(1);
}
/* open display */
if (!(dpy = XOpenDisplay(0x0))) {
fprintf(stderr, "Cannot open display!\n");
@ -354,6 +368,7 @@ main()
free(ram_usage);
free(volume);
free(wifi_signal);
sleep(update_interval);
}
/* close display */