51 lines
1.2 KiB
C
51 lines
1.2 KiB
C
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#define _XOPEN_SOURCE
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#include <time.h>
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#define __USE_UNIX98
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#include <stdio.h>
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#include <string.h>
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int mktime_test(const char* str)
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{
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struct tm local_tm, local_tm2;
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time_t local_time;
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char buffer[128];
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memset(buffer, 0, sizeof(buffer));
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puts(str);
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if (strptime(str, "%Y-%m-%d %H:%M:%S", &local_tm) == NULL)
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{
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fprintf(stderr, "failed to convert `%s' to struct tm\n", str);
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return 1;
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}
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snprintf(buffer, sizeof(buffer), "%d-%02d-%02d %02d:%02d:%02d",
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local_tm.tm_year + 1900, local_tm.tm_mon + 1, local_tm.tm_mday,
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local_tm.tm_hour, local_tm.tm_min, local_tm.tm_sec);
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puts(buffer);
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if (strcmp(str, buffer) != 0)
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{
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fprintf(stderr, "strptime() failed\n");
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return 1;
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}
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local_tm.tm_isdst = -1;
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local_time = mktime(&local_tm);
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localtime_r(&local_time, &local_tm2);
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snprintf(buffer, sizeof(buffer), "%d-%02d-%02d %02d:%02d:%02d",
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local_tm2.tm_year + 1900, local_tm2.tm_mon + 1, local_tm2.tm_mday,
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local_tm2.tm_hour, local_tm2.tm_min, local_tm2.tm_sec);
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puts(buffer);
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if (strcmp(str, buffer) != 0)
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{
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fprintf(stderr, "mktime() or localtime_r() failed\n");
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return 1;
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}
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return 0;
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}
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int main()
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{
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mktime_test("1981-07-01 00:00:00");
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mktime_test("1981-07-01 00:00:00");
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return 0;
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}
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