143 lines
3.5 KiB
C
143 lines
3.5 KiB
C
// © 2016 and later: Unicode, Inc. and others.
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// License & terms of use: http://www.unicode.org/copyright.html
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/*
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**********************************************************************
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* Copyright (C) 2007-2007, International Business Machines
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* Corporation and others. All Rights Reserved.
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**********************************************************************
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*
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* File tzdate.c
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*
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* Author: Michael Ow
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*
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**********************************************************************
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <time.h>
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#include <string.h>
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#include "unicode/utypes.h"
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#include "unicode/ustring.h"
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#include "unicode/uclean.h"
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#include "unicode/ucnv.h"
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#include "unicode/udat.h"
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#include "unicode/ucal.h"
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#include "putilimp.h"
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#define SIZE 80
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#define OFFSET_MONTH 1
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int64_t getSystemCurrentTime(char* systime, int year, int month, int day, int hour, int minute, int useCurrentTime);
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void getICUCurrentTime(char* icutime, double timeToCheck);
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void printTime(char* systime, char* icutime);
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int main(int argc, char** argv) {
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char systime[SIZE];
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char icutime[SIZE];
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int year, month, day, hour, minute;
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int sysyear;
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int useCurrentTime;
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int64_t systemtime;
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sysyear = year = month = day = 0;
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if (argc <= 6) {
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fprintf(stderr, "Not enough arguments\n");
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return -1;
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}
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year = atoi(argv[1]);
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month = atoi(argv[2]);
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day = atoi(argv[3]);
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hour = atoi(argv[4]);
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minute = atoi(argv[5]);
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useCurrentTime = atoi(argv[6]);
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/* format year for system time */
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sysyear = year - 1900;
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systemtime = getSystemCurrentTime(systime, sysyear, month, day, hour, minute, useCurrentTime);
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getICUCurrentTime(icutime, systemtime * U_MILLIS_PER_SECOND);
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/* print out the times if failed */
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if (strcmp(systime, icutime) != 0) {
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printf("Failed\n");
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printTime(systime, icutime);
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}
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return 0;
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}
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void getICUCurrentTime(char* icutime, double timeToCheck) {
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UDateFormat *fmt;
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const UChar *tz = 0;
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UChar *s = 0;
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UDateFormatStyle style = UDAT_RELATIVE;
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UErrorCode status = U_ZERO_ERROR;
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int32_t len = 0;
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int i;
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fmt = udat_open(style, style, 0, tz, -1,NULL,0, &status);
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len = udat_format(fmt, timeToCheck, 0, len, 0, &status);
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if (status == U_BUFFER_OVERFLOW_ERROR)
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status = U_ZERO_ERROR;
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s = (UChar*) malloc(sizeof(UChar) * (len+1));
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if(s == 0)
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goto finish;
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udat_format(fmt, timeToCheck, s, len + 1, 0, &status);
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if (U_FAILURE(status))
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goto finish;
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/* +1 to NULL terminate */
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for(i = 0; i < len+1; i++) {
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icutime[i] = (char)s[i];
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}
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finish:
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udat_close(fmt);
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free(s);
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}
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int64_t getSystemCurrentTime(char* systime, int year, int month, int day, int hour, int minute, int useCurrentTime) {
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time_t now;
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struct tm ts;
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if (useCurrentTime){
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time(&now);
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ts = *localtime(&now);
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}
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else {
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memset(&ts, 0, sizeof(ts));
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ts.tm_year = year;
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ts.tm_mon = month - OFFSET_MONTH;
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ts.tm_mday = day;
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ts.tm_hour = hour;
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ts.tm_min = minute;
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now = mktime(&ts);
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ts = *localtime(&now);
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}
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/* Format the string */
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strftime(systime, sizeof(char) * 80, "%Y%m%d %I:%M %p", &ts);
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return (double)now;
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}
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void printTime(char* systime, char* icutime) {
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printf("System Time: %s\n", systime);
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printf("ICU Time: %s\n", icutime);
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printf("STD=%s DST=%s OFFSET=%d\n", uprv_tzname(0), uprv_tzname(1), uprv_timezone());
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}
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