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/*
* jim-clock.c
*
* Implements the clock command
*/
/* For strptime() */
#ifndef _XOPEN_SOURCE
#define _XOPEN_SOURCE 500
#endif
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <time.h>
#include "jimautoconf.h"
#include <jim-subcmd.h>
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
static int clock_cmd_format(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
{
/* How big is big enough? */
char buf[100];
time_t t;
long seconds;
const char *format = "%a %b %d %H:%M:%S %Z %Y";
if (argc == 2 || (argc == 3 && !Jim_CompareStringImmediate(interp, argv[1], "-format"))) {
return -1;
}
if (argc == 3) {
format = Jim_String(argv[2]);
}
if (Jim_GetLong(interp, argv[0], &seconds) != JIM_OK) {
return JIM_ERR;
}
t = seconds;
if (strftime(buf, sizeof(buf), format, localtime(&t)) == 0) {
Jim_SetResultString(interp, "format string too long", -1);
return JIM_ERR;
}
Jim_SetResultString(interp, buf, -1);
return JIM_OK;
}
#ifdef HAVE_STRPTIME
static int clock_cmd_scan(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
{
char *pt;
struct tm tm;
time_t now = time(0);
if (!Jim_CompareStringImmediate(interp, argv[1], "-format")) {
return -1;
}
/* Initialise with the current date/time */
localtime_r(&now, &tm);
pt = strptime(Jim_String(argv[0]), Jim_String(argv[2]), &tm);
if (pt == 0 || *pt != 0) {
Jim_SetResultString(interp, "Failed to parse time according to format", -1);
return JIM_ERR;
}
/* Now convert into a time_t */
Jim_SetResultInt(interp, mktime(&tm));
return JIM_OK;
}
#endif
static int clock_cmd_seconds(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
{
Jim_SetResultInt(interp, time(NULL));
return JIM_OK;
}
static int clock_cmd_micros(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
{
struct timeval tv;
gettimeofday(&tv, NULL);
Jim_SetResultInt(interp, (jim_wide) tv.tv_sec * 1000000 + tv.tv_usec);
return JIM_OK;
}
static int clock_cmd_millis(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
{
struct timeval tv;
gettimeofday(&tv, NULL);
Jim_SetResultInt(interp, (jim_wide) tv.tv_sec * 1000 + tv.tv_usec / 1000);
return JIM_OK;
}
static const jim_subcmd_type clock_command_table[] = {
{ "seconds",
NULL,
clock_cmd_seconds,
0,
0,
/* Description: Returns the current time as seconds since the epoch */
},
{ "clicks",
NULL,
clock_cmd_micros,
0,
0,
/* Description: Returns the current time in 'clicks' */
},
{ "microseconds",
NULL,
clock_cmd_micros,
0,
0,
/* Description: Returns the current time in microseconds */
},
{ "milliseconds",
NULL,
clock_cmd_millis,
0,
0,
/* Description: Returns the current time in milliseconds */
},
{ "format",
"seconds ?-format format?",
clock_cmd_format,
1,
3,
/* Description: Format the given time */
},
#ifdef HAVE_STRPTIME
{ "scan",
"str -format format",
clock_cmd_scan,
3,
3,
/* Description: Determine the time according to the given format */
},
#endif
{ NULL }
};
int Jim_clockInit(Jim_Interp *interp)
{
if (Jim_PackageProvide(interp, "clock", "1.0", JIM_ERRMSG))
return JIM_ERR;
Jim_CreateCommand(interp, "clock", Jim_SubCmdProc, (void *)clock_command_table, NULL);
return JIM_OK;
}
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