dockapps/wmtz-0.7/wmtz/wmtz.c

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/*****************************************************************************/
/* */
/* wmtz.c */
/* Shows local time in different timezones + JD + Sidereal time + */
/* internet time + local date and time. */
/* */
/* Jan Lindblom <99jl@home.se> (http://www.geocities.com/~jl1n/) */
/* */
/* wmtz.c was derived from: */
/* */
/* wminet.c */
/* */
/* Multi-function system monitor */
/* Dave Clark (clarkd@skynet.ca) (http://www.neotokyo.org/illusion) */
/* Martijn Pieterse (pieterse@xs4all.nl) (http://windowmaker.mezaway.org) */
/* and Antoine Nulle (warp@xs4all.nl) (http://windowmaker.mezaway.org) */
/* */
/* This software is licensed through the GNU General Public Licence. */
/* Read the COPYING file for details. */
/* */
/*****************************************************************************/
#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include <string.h>
#include <fcntl.h>
#include <stdarg.h>
#include <errno.h>
#include <unistd.h>
#include <ctype.h>
#include <math.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <X11/Xlib.h>
#include <X11/xpm.h>
#include <X11/extensions/shape.h>
#include "../wmgeneral/wmgeneral.h"
#include "../wmgeneral/misc.h"
#include "wmtz.xpm"
#include "wmtz_mono.xpm"
/*
* Defines
*/
#define WMTZ_VERSION "0.7"
#define CHAR_WIDTH 6
#define STRSIZE 10
#define LMST 1
#define GMST 0
#define ABOUT "xmessage -center -buttons \"Close\" \"WMTZ - Window Maker Time Zone dockapp v0.7
http://www.geocities.com/jl1n/wmtz/wmtz.html\""
/*
* Typedefs
*/
typedef struct
{
char label[10]; /* Time zone designation */
int diff; /* Time zone diff. from UT in hours */
double epoch; /* Epoch (for JD) */
char tz[256]; /* TZ environment variable string */
} timezone_t; /* ...numbers of days to subtract from JD */
/*
* Global variables
*/
timezone_t zone[6];
double longitude = 0.0;
double latitude = 0.0;
static struct tm *clk;
char *pname;
char *uconfig_file;
char *config_file;
char *defedit;
char *month[12];
char *week_day[7];
char wmtz_mask_bits[64*64];
int wmtz_mask_width = 64;
int wmtz_mask_height = 64;
int mono = 0;
extern char *tzname[2];
static char originalTZ[64];
/*
* Function declarations
*/
void usage(void);
void printversion(void);
void BlitString(char *name, int x, int y);
void wmtz_routine(int, char **);
int ReadConfigInt(FILE *fp, char *setting, int *value);
int ReadConfigString(FILE *fp, char *setting, char *value);
int Read_Config_File(char *filename);
void range(double *val, double ran);
void siderealTime(double jde, int *result, int mode);
double julianDay(int year, int month, double day, double hour,
double minute, double second, int julian);
int calendarDate(double jd, int *year, int *month, double *day);
int handleJD(void);
void errH(int printErrno, int exitCode, const char *msg, ...);
void handleTheMenu(int but_stat);
double jdn(time_t curtime);
/*****************************************************************************\
|* main *|
\*****************************************************************************/
int main(int argc, char *argv[]) {
int i;
char *envbuf;
/* Store away the executable name for error messages */
if ( (pname = strrchr( argv[0], '/' )) == NULL )
pname = argv[0];
else
pname++;
/* Store away the TZ environment variable, if set */
if ( (envbuf = getenv("TZ")) != NULL )
{
//Write TZ=envbuf into originalTZ
(void) sprintf(originalTZ, "TZ=%s", envbuf);
}
else
{
// Set originalTZ to TZ erase TZ env.
(void) sprintf(originalTZ, "TZ");
}
/* Parse Command Line */
for (i=1; i<argc; i++) {
char *arg = argv[i];
if (*arg=='-') {
switch (arg[1]) {
case 'd' :
if (strcmp(arg+1, "display")) {
usage();
exit(1);
}
break;
case 'g' :
if (strcmp(arg+1, "geometry")) {
usage();
exit(1);
}
break;
case 'j' :
if (strcmp(arg+1, "jd")) {
usage();
exit(1);
}
handleJD();
exit(0);
break;
case 'm' :
mono = 1;
break;
case 'v' :
printversion();
exit(0);
break;
case 'c' :
if (argc > (i+1))
{
uconfig_file = strdup(argv[i+1]);
if (uconfig_file == NULL)
errH(1, 1, "strdup");
i++;
}
break;
case 'e' :
if (argc > (i+1))
{
defedit = strdup(argv[i+1]);
if (defedit == NULL)
errH(1, 1, "strdup");
i++;
}
break;
default:
usage();
exit(0);
break;
}
}
}
month[0] = "JAN"; month[1] = "FEB"; month[2] = "MAR";
month[3] = "APR"; month[4] = "MAY"; month[5] = "JUN";
month[6] = "JUL"; month[7] = "AUG"; month[8] = "SEP";
month[9] = "OUT"; month[10] = "NOV"; month[11] = "DEC";
week_day[0] = "SUNDAY ";
week_day[1] = "MONDAY ";
week_day[2] = "TUESDAY ";
week_day[3] = "WEDNESDAY";
week_day[4] = "THURSDAY ";
week_day[5] = "FRIDAY ";
week_day[6] = "SATURDAY ";
wmtz_routine(argc, argv);
return 0;
}
/*****************************************************************************\
|* wmtz_routine - Creates the wmtz window. *|
\*****************************************************************************/
void wmtz_routine(int argc, char **argv)
{
int j = 0,k = 0, hour = 0, i = 0;
int sid[2], clicked = 0, but_stat = -1;
double jd = 0;
float swatch_beats;
time_t curtime;
time_t prevtime;
char *home;
char buf[64];
char blitstr[STRSIZE];
XEvent Event;
if (mono)
{
fprintf(stderr, "Starting monochrome version.\n");
createXBMfromXPM(wmtz_mask_bits, wmtz_mono_xpm,
wmtz_mask_width, wmtz_mask_height);
openXwindow(argc, argv, wmtz_mono_xpm, wmtz_mask_bits,
wmtz_mask_width, wmtz_mask_height);
}
else
{
createXBMfromXPM(wmtz_mask_bits, wmtz_master_xpm,
wmtz_mask_width, wmtz_mask_height);
openXwindow(argc, argv, wmtz_master_xpm, wmtz_mask_bits,
wmtz_mask_width, wmtz_mask_height);
}
memset(&zone, 0, sizeof(zone));
AddMouseRegion(0, 5, 6, 58, 16);
AddMouseRegion(1, 5, 16, 58, 26);
AddMouseRegion(2, 5, 26, 58, 36);
AddMouseRegion(3, 5, 36, 58, 46);
AddMouseRegion(4, 5, 46, 58, 56);
/* Read config file */
if (uconfig_file != NULL)
{
/* user-specified config file */
fprintf(stderr, "Using user-specified config file '%s'.\n",
uconfig_file);
config_file = strdup(uconfig_file);
free(uconfig_file);
Read_Config_File(config_file);
}
else
{
home = getenv("HOME");
config_file = malloc( strlen(home) + 9 );
if (config_file == NULL)
errH(1, 1, "malloc");
sprintf(config_file, "%s/.wmtzrc", home);
if (!Read_Config_File(config_file))
{
/* Fall back to /etc/wmtzrc */
free(config_file);
config_file = malloc( 12 );
if (config_file == NULL)
errH(1, 1, "malloc");
sprintf(config_file, "/etc/wmtzrc");
fprintf(stderr, "Using /etc/wmtzrc as config file.\n");
Read_Config_File(config_file);
}
}
RedrawWindow();
prevtime = time(0) - 1;
while (1)
{
waitpid(0, NULL, WNOHANG);
/* If wmtz have been mouse-clicked, show menu */
if ( clicked )
{
BlitString("MENU: ", 5, (11*(0)) + 5);
BlitString(" WMTZ ", 5, (11*(1)) + 5);
BlitString(" CONFIG ", 5, (11*(2)) + 5);
BlitString(" RESTART ", 5, (11*(3)) + 5);
BlitString(" QUIT ", 5, (11*(4)) + 5);
}
else if ( (curtime = time(0)) > prevtime)
{
prevtime = curtime;
/* Update the display */
for (j=1; j<6; j++)
{
/* Display empty line */
if (strncmp( zone[j].label, "xxx", 3) == 0 )
{
BlitString(" ", 5, (11*(j-1)) + 5);
}
/* Display local day/mon/year */
else if (strncmp( zone[j].label, "DATE", 4) == 0 )
{
clk = localtime(&curtime);
while(clk->tm_year>99) clk->tm_year-=100;
snprintf(blitstr, STRSIZE,"%s %02d.%02d",
month[clk->tm_mon],clk->tm_mday,clk->tm_year);
BlitString(blitstr, 5, (11*(j-1)) + 5);
}
/* Display local weekday */
else if (strncmp( zone[j].label, "WDAY", 4) == 0 )
{
clk = localtime(&curtime);
snprintf(blitstr, STRSIZE,"%s",week_day[clk->tm_wday]);
BlitString(blitstr, 4, (11*(j-1)) + 5);
}
/* Display more precise internet time */
else if (strncmp( zone[j].label,"@", 1) == 0 )
{
/* Calculate Internet time */
swatch_beats = (float)(((curtime+3600)%86400)/86.4);
snprintf (blitstr, STRSIZE, "@:%7.3f", swatch_beats);
BlitString (blitstr, 5, (11*(j-1)) + 5);
}
/* Display Julian Day Number */
else if (strncmp( zone[j].label, "JDN", 3) == 0 )
{
clk = gmtime(&curtime);
/* Calculate Julin Day Number */
jd = jdn(curtime) - zone[j].epoch;
snprintf(blitstr, STRSIZE, "%10f", jd );
BlitString(blitstr, 5, (11*(j-1)) + 5);
}
/* Display Local Mean Sidereal Time */
else if (strncmp( zone[j].label, "LMST", 3) == 0 )
{
clk = gmtime(&curtime);
jd = jdn(curtime);
siderealTime( jd, sid, LMST );
snprintf(blitstr, STRSIZE, "%s%02i.%02i","LST:", sid[0], sid[1]);
BlitString(blitstr, 5, (11*(j-1)) + 5);
}
/* Display Greenwich Mean Sidereal Time */
else if (strncmp( zone[j].label, "GMST", 3) == 0 )
{
clk = gmtime(&curtime);
jd = jdn(curtime);
siderealTime( jd, sid, GMST );
snprintf(blitstr, STRSIZE, "%s%02i.%02i","GST:", sid[0], sid[1]);
BlitString(blitstr, 5, (11*(j-1)) + 5);
}
/* Display local time */
else if (strncmp( zone[j].label, "LOCAL", 5) == 0 )
{
clk = localtime(&curtime);
strncpy(buf, tzname[0], 3);
for (k=0; k<3; k++)
if (buf[k] == 0)
buf[k] = ' ';
buf[3] = ':';
buf[4] = 0;
hour = clk->tm_hour;
/* Print Label */
snprintf(blitstr, STRSIZE, "%s%02i.%02i",buf,hour,clk->tm_min);
BlitString(blitstr, 5, (11*(j-1)) + 5);
}
/* Display time in specified time zone */
else if (strncmp( zone[j].label, "TZONE", 4) == 0 )
{
putenv(zone[j].tz);
tzset();
clk = localtime(&curtime);
strncpy(buf, tzname[0], 3);
for (k=0; k<3; k++)
if (buf[k] == 0)
buf[k] = ' ';
buf[3] = ':';
buf[4] = 0;
snprintf(blitstr, STRSIZE, "%s%02i.%02i", buf,
clk->tm_hour, clk->tm_min);
BlitString(blitstr, 5, (11*(j-1)) + 5);
/* Reset TZ environment variable to old value */
putenv(originalTZ);
}
/* Display time in specified time zone without TZ env. var. */
else
{
clk = gmtime(&curtime);
strncpy(buf, zone[j].label, 3);
for (k=0; k<3; k++)
if (buf[k] == 0)
buf[k] = ' ';
buf[3] = ':';
buf[4] = 0;
hour = clk->tm_hour - zone[j].diff;
if (hour > 23 )
hour -= 24;
else if (hour < 0 )
hour += 24;
/* Print Label */
snprintf(blitstr, STRSIZE, "%s%02i.%02i",buf,hour,clk->tm_min);
BlitString(blitstr, 5, (11*(j-1)) + 5);
}
}
}
RedrawWindow();
/* X Events */
while (XPending(display))
{
XNextEvent(display, &Event);
switch (Event.type)
{
case Expose:
RedrawWindow();
break;
case DestroyNotify:
XCloseDisplay(display);
exit(0);
break;
case ButtonPress:
i = CheckMouseRegion(Event.xbutton.x, Event.xbutton.y);
but_stat = i;
break;
case ButtonRelease:
i = CheckMouseRegion(Event.xbutton.x, Event.xbutton.y);
if (but_stat == i && but_stat >= 0)
{
if ( clicked ) /* The menu is up */
{
handleTheMenu(but_stat);
clicked = 0;
}
else /* Show the menu instead of time */
{
clicked = 1;
}
}
but_stat = -1;
break;
default:
}
}
usleep(10000);
}
}
/*****************************************************************************\
|* handleTheMenu *|
\*****************************************************************************/
void handleTheMenu(int but_stat)
{
char *editor;
char *ed;
switch( but_stat )
{
case 0:
execCommand(ABOUT);
break;
case 1:
break;
case 2:
/* Figure out what editor to use */
if ( defedit == NULL )
{
ed = getenv("XEDITOR");
if ( ed == NULL )
ed = "xedit";
}
else
{
ed = defedit;
}
editor = malloc( strlen(ed)+strlen(config_file)+2 );
if ( editor == NULL )
errH(1, 1, "malloc");
sprintf(editor, "%s %s", ed, config_file);
waitpid( execCommand(editor), NULL, 0 );
Read_Config_File(config_file);
free(editor);
break;
case 3:
Read_Config_File(config_file);
break;
case 4:
exit(0);
break;
default:
}
return;
}
/*****************************************************************************\
|* ReadConfigSetting *|
\*****************************************************************************/
int ReadConfigString(FILE *fp, char *setting, char *value)
{
char str[1024];
char buf[1024];
int i;
int len;
int slen;
char *p=NULL;
if (!fp)
{
return 0;
}
snprintf(str,1024, "%s=", setting);
slen = strlen(str);
fseek(fp, 0, SEEK_SET);
while ( !feof(fp) )
{
if (!fgets(buf, 512, fp))
break;
len = strlen(buf);
/* strip linefeed */
for (i=0; i!=len; i++)
if (buf[i] == '\n')
buf[i] = 0;
/* printf("Scanning '%s'...\n", buf); */
if ( strncmp(buf, str, strlen(str)) == 0)
{
/* found our setting */
for(i=0; i!=slen; i++)
if ( buf[i] == '=' )
{
p=buf+i+1;
strcpy(value, p);
return 1;
}
}
}
return 0;
}
/*****************************************************************************\
|* ReadConfigInt *|
\*****************************************************************************/
int ReadConfigInt(FILE *fp, char *setting, int *value)
{
char buf[1024];
if (ReadConfigString(fp, setting, (char *) &buf))
{
*value = atoi(buf);
return 1;
}
return 0;
}
/*****************************************************************************\
|* ReadConfigDouble *|
\*****************************************************************************/
int ReadConfigDouble(FILE *fp, char *setting, double *value)
{
char buf[1024];
if (ReadConfigString(fp, setting, (char *) &buf))
{
*value = atof(buf);
return 1;
}
return 0;
}
/*****************************************************************************\
|* Read_Config_File *|
\*****************************************************************************/
int Read_Config_File( char *filename )
{
FILE *fp;
char temp[253];
fp = fopen(filename, "r");
if (fp)
{
ReadConfigString(fp, "time1", zone[1].label);
ReadConfigString(fp, "time2", zone[2].label);
ReadConfigString(fp, "time3", zone[3].label);
ReadConfigString(fp, "time4", zone[4].label);
ReadConfigString(fp, "time5", zone[5].label);
ReadConfigInt(fp, "utdiff1", &zone[1].diff);
ReadConfigInt(fp, "utdiff2", &zone[2].diff);
ReadConfigInt(fp, "utdiff3", &zone[3].diff);
ReadConfigInt(fp, "utdiff4", &zone[4].diff);
ReadConfigInt(fp, "utdiff5", &zone[5].diff);
ReadConfigDouble(fp, "utdiff1", &zone[1].epoch);
ReadConfigDouble(fp, "utdiff2", &zone[2].epoch);
ReadConfigDouble(fp, "utdiff3", &zone[3].epoch);
ReadConfigDouble(fp, "utdiff4", &zone[4].epoch);
ReadConfigDouble(fp, "utdiff5", &zone[5].epoch);
ReadConfigString(fp, "utdiff1", temp);
sprintf(zone[1].tz, "TZ=%s", temp);
ReadConfigString(fp, "utdiff2", temp);
sprintf(zone[2].tz, "TZ=%s", temp);
ReadConfigString(fp, "utdiff3", temp);
sprintf(zone[3].tz, "TZ=%s", temp);
ReadConfigString(fp, "utdiff4", temp);
sprintf(zone[4].tz, "TZ=%s", temp);
ReadConfigString(fp, "utdiff5", temp);
sprintf(zone[5].tz, "TZ=%s", temp);
ReadConfigDouble(fp, "longitude", &longitude);
/* ReadConfigDouble(fp, "latitude", &latitude); */
fclose(fp);
return 1;
}
else
{
errH(1, 0, "Unable to open %s", filename);
return 0;
}
}
/*****************************************************************************\
|* BlitString - Blits a string at given coordinates. *|
\*****************************************************************************/
void BlitString(char *name, int x, int y)
{
int i;
int c;
int k;
k = x;
for (i=0; name[i]; i++)
{
c = toupper(name[i]);
if (c >= 'A' && c <= 'Z')
{ /* its a letter */
c -= 'A';
copyXPMArea(c * CHAR_WIDTH, 74, CHAR_WIDTH, 8, k, y);
k += CHAR_WIDTH;
}
else if ( c >= '0' && c <= ':')
{
c -= '0';
copyXPMArea(c * CHAR_WIDTH, 64, CHAR_WIDTH, 8, k, y);
k += CHAR_WIDTH;
}
else if (c == ';') /* used as a slim ':' */
{
copyXPMArea(60, 64, CHAR_WIDTH, 8, k, y);
k += 4;
}
else if (c=='.')
{
copyXPMArea(115, 64, 4, 8, k, y);
k += 4;
}
else if (c=='@')
{
copyXPMArea(108, 64, CHAR_WIDTH, 8, k, y);
k += CHAR_WIDTH;
}
else /* print a ' ' */
{
copyXPMArea(120, 64, CHAR_WIDTH, 8, k, y);
k += CHAR_WIDTH;
}
}
}
/*****************************************************************************\
|* usage *|
\*****************************************************************************/
void usage(void)
{
fprintf(stderr, "\nwmtz - shows local time around the world and more.\n");
fprintf(stderr, "See ~/.wmtzrc or /etc/wmtzrc for configuration.\n\n");
fprintf(stderr, "Usage:\n");
fprintf(stderr, " -display <display name>\n");
fprintf(stderr, " -e <editor> use specified editor\n");
fprintf(stderr, " -geometry +XPOS+YPOS initial window position\n");
fprintf(stderr, " -jd Julian<->Date conversion\n");
fprintf(stderr, " -c <filename> use specified config file\n");
fprintf(stderr, " -m start monochrome version\n");
fprintf(stderr, " -h this help screen\n");
fprintf(stderr, " -v print the version number\n");
fprintf(stderr, "\n");
}
/*****************************************************************************\
|* printversion *|
\*****************************************************************************/
void printversion(void)
{
fprintf(stderr, "wmtz v%s\n", WMTZ_VERSION);
}
/*****************************************************************************\
|* range - Put val in 0<->ran interval. *|
\*****************************************************************************/
void range (double *val, double ran)
{
*val -= ran*floor(*val/ran);
if (*val < 0)
*val += ran;
}
/*****************************************************************************\
|* jdn - converts a time_t to Julian Day *|
\*****************************************************************************/
double jdn(time_t curtime)
{
return (curtime/86400.0 + 2440587.5);
}
/*****************************************************************************\
|* siderealTime - Gives sidereal time from JD. *|
\*****************************************************************************/
void siderealTime( double jde, int *result, int mode )
{
double t, t2, t3, ts;
t = (jde - 2451545.0)/36525.0;
t2 = t*t;
t3 = t2*t;
/* Expression from "Astronomical Algorithms" by J. Meeus */
ts = 280.46061837 + 360.98564736629 * ( jde - 2451545.0 )
+ 0.000387933 * t2 - t3/38710000.0;
range( &ts, 360.0 );
ts /= 15.0;
/* If local time add one hour for every 15 degree in longitude */
if ( mode == LMST )
{
ts += longitude/15.0;
}
range( &ts, 24.0 );
result[0] = (int)ts;
result[1] = (int)(60 *(ts - result[0]));
}
/*****************************************************************************\
|* julianDay - Gives JD from date. *|
\*****************************************************************************/
double julianDay( int year, int month, double day, double hour,
double minute, double second, int julian )
{
int a, b, c, d;
double jd;
day = day + hour/24.0 + minute/1440.0 + second/86400.0;
if ( month < 3 )
{
year -= 1;
month += 12;
}
/* If the date is a Julian calendar date, set julian to TRUE */
if ( julian )
{
b = 0;
}
else /* If Gregorian calendar date, julian should be FALSE */
{
a = year/100;
b = 2 - a + a/4;
}
c = 365.25 * (year + 4716);
d = 30.6001 * (month + 1);
jd = c + d + day + b - 1524.5;
return( jd );
}
/*****************************************************************************\
|* calendarDate - Gives date from JD. Only Gregorian calendar dates. *|
\*****************************************************************************/
int calendarDate( double jd, int *year, int *month, double *day )
{
double a, b, frac, ij, alfa, beta, c, d, e, f;
if ( jd < 0 )
return 0;
jd += 0.5;
ij = floor(jd);
frac = jd - ij;
if ( ij < 2299161 )
{
a = ij;
}
else
{
alfa = floor((ij - 1867216.25)/36524.25);
beta = floor(alfa/4);
a = ij + 1 + alfa - beta;
}
b = a + 1524;
c = floor((b - 122.1)/365.25);
d = floor(365.25 * c);
e = floor((b - d)/30.6001);
f = floor(30.6001 * e);
*day = b - d - f + frac;
if (e < 14)
*month = e - 1;
else if (e == 14 || e == 15)
*month = e - 13;
else
return 0;
if (*month > 2)
*year = c - 4716;
else if (*month == 1 || *month == 2)
*year = c - 4715;
else
return 0;
return 1;
}
/*****************************************************************************\
|* handleJD *|
\*****************************************************************************/
int handleJD( void )
{
int conv, y, m, d, h, min, sec;
double day, jd;
printf(" 1 : Date to JD.\n 2 : JD to date.\n");
printf("Choose conversion (1 or 2): ");
scanf("%d", &conv);
if (conv == 1 )
{
printf("Enter UT date with time (YYYY,MM,DD,hh:mm:ss): ");
scanf("%d,%d,%d,%d:%d:%d", &y, &m, &d, &h, &min, &sec);
printf("\nJulian Day: %f\n", julianDay( y, m, d, h, min, sec, 0 ) );
}
else if (conv == 2)
{
printf("Enter Julian Day Number: ");
scanf("%lf", &jd );
if ( !calendarDate( jd, &y, &m, &day ) )
{
printf("Conversion error! Negative JD not allowed.\n");
return 0;
}
printf("\nGregorian date: %d-%2.2d-%2.4f\n", y, m, day);
}
else
{
printf("Invalid choice! Try again, please...\n");
handleJD();
}
return 1;
}
/*****************************************************************************\
|* errH *|
\*****************************************************************************/
void errH(int printErrno, int exitCode, const char *msg, ...)
{
int error = errno;
va_list arg;
char buf[2048];
/* Put the name of the program first */
buf[0] = 0;
strcat(buf, pname);
strcat(buf, ": ");
va_start(arg, msg);
vsprintf(buf+strlen(buf), msg, arg);
if (printErrno)
sprintf(buf+strlen(buf), ": %s", strerror(error));
strcat(buf, "\n");
fflush(stdout);
fputs(buf, stderr);
fflush(NULL);
va_end(arg);
if ( exitCode )
exit(exitCode);
return;
}