#include "tcl.h"
#include "tclInt.h"
#include "tclPort.h"
TCL_DECLARE_MUTEX(clockMutex)
static int FormatClock _ANSI_ARGS_((Tcl_Interp *interp,
unsigned long clockVal, int useGMT,
char *format));
int
Tcl_ClockObjCmd (client, interp, objc, objv)
ClientData client;
Tcl_Interp *interp;
int objc;
Tcl_Obj *CONST objv[];
{
Tcl_Obj *resultPtr;
int index;
Tcl_Obj *CONST *objPtr;
int useGMT = 0;
char *format = "%a %b %d %X %Z %Y";
int dummy;
unsigned long baseClock, clockVal;
long zone;
Tcl_Obj *baseObjPtr = NULL;
char *scanStr;
static CONST char *switches[] =
{"clicks", "format", "scan", "seconds", (char *) NULL};
enum command { COMMAND_CLICKS, COMMAND_FORMAT, COMMAND_SCAN,
COMMAND_SECONDS
};
static CONST char *formatSwitches[] = {"-format", "-gmt", (char *) NULL};
static CONST char *scanSwitches[] = {"-base", "-gmt", (char *) NULL};
resultPtr = Tcl_GetObjResult(interp);
if (objc < 2) {
Tcl_WrongNumArgs(interp, 1, objv, "option ?arg ...?");
return TCL_ERROR;
}
if (Tcl_GetIndexFromObj(interp, objv[1], switches, "option", 0, &index)
!= TCL_OK) {
return TCL_ERROR;
}
switch ((enum command) index) {
case COMMAND_CLICKS: {
int forceMilli = 0;
if (objc == 3) {
format = Tcl_GetStringFromObj(objv[2], &index);
if (strncmp(format, "-milliseconds",
(unsigned int) index) == 0) {
forceMilli = 1;
} else {
Tcl_AppendStringsToObj(resultPtr,
"bad switch \"", format,
"\": must be -milliseconds", (char *) NULL);
return TCL_ERROR;
}
} else if (objc != 2) {
Tcl_WrongNumArgs(interp, 2, objv, "?-milliseconds?");
return TCL_ERROR;
}
if (forceMilli) {
Tcl_Time time;
Tcl_GetTime(&time);
Tcl_SetLongObj(resultPtr,
(long) (time.sec*1000 + time.usec/1000));
} else {
Tcl_SetLongObj(resultPtr, (long) TclpGetClicks());
}
return TCL_OK;
}
case COMMAND_FORMAT:
if ((objc < 3) || (objc > 7)) {
wrongFmtArgs:
Tcl_WrongNumArgs(interp, 2, objv,
"clockval ?-format string? ?-gmt boolean?");
return TCL_ERROR;
}
if (Tcl_GetLongFromObj(interp, objv[2], (long*) &clockVal)
!= TCL_OK) {
return TCL_ERROR;
}
objPtr = objv+3;
objc -= 3;
while (objc > 1) {
if (Tcl_GetIndexFromObj(interp, objPtr[0], formatSwitches,
"switch", 0, &index) != TCL_OK) {
return TCL_ERROR;
}
switch (index) {
case 0:
format = Tcl_GetStringFromObj(objPtr[1], &dummy);
break;
case 1:
if (Tcl_GetBooleanFromObj(interp, objPtr[1],
&useGMT) != TCL_OK) {
return TCL_ERROR;
}
break;
}
objPtr += 2;
objc -= 2;
}
if (objc != 0) {
goto wrongFmtArgs;
}
return FormatClock(interp, (unsigned long) clockVal, useGMT,
format);
case COMMAND_SCAN:
if ((objc < 3) || (objc > 7)) {
wrongScanArgs:
Tcl_WrongNumArgs(interp, 2, objv,
"dateString ?-base clockValue? ?-gmt boolean?");
return TCL_ERROR;
}
objPtr = objv+3;
objc -= 3;
while (objc > 1) {
if (Tcl_GetIndexFromObj(interp, objPtr[0], scanSwitches,
"switch", 0, &index) != TCL_OK) {
return TCL_ERROR;
}
switch (index) {
case 0:
baseObjPtr = objPtr[1];
break;
case 1:
if (Tcl_GetBooleanFromObj(interp, objPtr[1],
&useGMT) != TCL_OK) {
return TCL_ERROR;
}
break;
}
objPtr += 2;
objc -= 2;
}
if (objc != 0) {
goto wrongScanArgs;
}
if (baseObjPtr != NULL) {
if (Tcl_GetLongFromObj(interp, baseObjPtr,
(long*) &baseClock) != TCL_OK) {
return TCL_ERROR;
}
} else {
baseClock = TclpGetSeconds();
}
if (useGMT) {
zone = -50000;
} else {
zone = TclpGetTimeZone((unsigned long) baseClock);
}
scanStr = Tcl_GetStringFromObj(objv[2], &dummy);
Tcl_MutexLock(&clockMutex);
if (TclGetDate(scanStr, (unsigned long) baseClock, zone,
(unsigned long *) &clockVal) < 0) {
Tcl_MutexUnlock(&clockMutex);
Tcl_AppendStringsToObj(resultPtr,
"unable to convert date-time string \"",
scanStr, "\"", (char *) NULL);
return TCL_ERROR;
}
Tcl_MutexUnlock(&clockMutex);
Tcl_SetLongObj(resultPtr, (long) clockVal);
return TCL_OK;
case COMMAND_SECONDS:
if (objc != 2) {
Tcl_WrongNumArgs(interp, 2, objv, NULL);
return TCL_ERROR;
}
Tcl_SetLongObj(resultPtr, (long) TclpGetSeconds());
return TCL_OK;
default:
return TCL_ERROR;
}
}
static int
FormatClock(interp, clockVal, useGMT, format)
Tcl_Interp *interp;
unsigned long clockVal;
int useGMT;
char *format;
{
struct tm *timeDataPtr;
Tcl_DString buffer, uniBuffer;
int bufSize;
char *p;
int result;
time_t tclockVal;
#ifndef HAVE_TM_ZONE
int savedTimeZone = 0;
char *savedTZEnv = NULL;
#endif
#ifdef HAVE_TZSET
static int calledTzset = 0;
Tcl_MutexLock(&clockMutex);
if (!calledTzset) {
tzset();
calledTzset = 1;
}
Tcl_MutexUnlock(&clockMutex);
#endif
if (*format == '\0') {
return TCL_OK;
}
#if !defined(HAVE_TM_ZONE) && !defined(WIN32)
if (useGMT) {
CONST char *varValue;
varValue = Tcl_GetVar2(interp, "env", "TZ", TCL_GLOBAL_ONLY);
if (varValue != NULL) {
savedTZEnv = strcpy(ckalloc(strlen(varValue) + 1), varValue);
} else {
savedTZEnv = NULL;
}
Tcl_SetVar2(interp, "env", "TZ", "GMT", TCL_GLOBAL_ONLY);
savedTimeZone = timezone;
timezone = 0;
tzset();
}
#endif
tclockVal = clockVal;
timeDataPtr = TclpGetDate((TclpTime_t) &tclockVal, useGMT);
for (bufSize = 1, p = format; *p != '\0'; p++) {
if (*p == '%') {
bufSize += 40;
} else {
bufSize++;
}
}
Tcl_DStringInit(&uniBuffer);
Tcl_UtfToExternalDString(NULL, format, -1, &uniBuffer);
Tcl_DStringInit(&buffer);
Tcl_DStringSetLength(&buffer, bufSize);
Tcl_MutexLock(&clockMutex);
result = TclpStrftime(buffer.string, (unsigned int) bufSize,
Tcl_DStringValue(&uniBuffer), timeDataPtr, useGMT);
Tcl_MutexUnlock(&clockMutex);
Tcl_DStringFree(&uniBuffer);
#if !defined(HAVE_TM_ZONE) && !defined(WIN32)
if (useGMT) {
if (savedTZEnv != NULL) {
Tcl_SetVar2(interp, "env", "TZ", savedTZEnv, TCL_GLOBAL_ONLY);
ckfree(savedTZEnv);
} else {
Tcl_UnsetVar2(interp, "env", "TZ", TCL_GLOBAL_ONLY);
}
timezone = savedTimeZone;
tzset();
}
#endif
if (result == 0) {
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
"bad format string \"", format, "\"", (char *) NULL);
return TCL_ERROR;
}
Tcl_DStringInit(&uniBuffer);
Tcl_ExternalToUtfDString(NULL, buffer.string, -1, &uniBuffer);
Tcl_SetStringObj(Tcl_GetObjResult(interp), uniBuffer.string, -1);
Tcl_DStringFree(&uniBuffer);
Tcl_DStringFree(&buffer);
return TCL_OK;
}