Revision f6c7375a libavformat/cutils.c
libavformat/cutils.c | ||
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42 | 42 |
*nb_ptr = nb; |
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} |
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time_t mktimegm(struct tm *tm) |
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{ |
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time_t t; |
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|
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int y = tm->tm_year + 1900, m = tm->tm_mon + 1, d = tm->tm_mday; |
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if (m < 3) { |
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m += 12; |
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y--; |
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} |
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|
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t = 86400 * |
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(d + (153 * m - 457) / 5 + 365 * y + y / 4 - y / 100 + y / 400 - 719469); |
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t += 3600 * tm->tm_hour + 60 * tm->tm_min + tm->tm_sec; |
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return t; |
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} |
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#define ISLEAP(y) (((y) % 4 == 0) && (((y) % 100) != 0 || ((y) % 400) == 0)) |
65 | 46 |
#define LEAPS_COUNT(y) ((y)/4 - (y)/100 + (y)/400) |
66 | 47 |
|
... | ... | |
95 | 76 |
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return tm; |
97 | 78 |
} |
98 |
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/* get a positive number between n_min and n_max, for a maximum length |
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of len_max. Return -1 if error. */ |
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static int date_get_num(const char **pp, |
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int n_min, int n_max, int len_max) |
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{ |
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int i, val, c; |
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const char *p; |
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p = *pp; |
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val = 0; |
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for(i = 0; i < len_max; i++) { |
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c = *p; |
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if (!isdigit(c)) |
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break; |
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val = (val * 10) + c - '0'; |
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p++; |
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} |
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/* no number read ? */ |
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if (p == *pp) |
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return -1; |
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if (val < n_min || val > n_max) |
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return -1; |
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*pp = p; |
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return val; |
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} |
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|
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/* small strptime for ffmpeg */ |
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const char *small_strptime(const char *p, const char *fmt, |
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struct tm *dt) |
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{ |
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int c, val; |
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|
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for(;;) { |
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c = *fmt++; |
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if (c == '\0') { |
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return p; |
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} else if (c == '%') { |
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c = *fmt++; |
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switch(c) { |
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case 'H': |
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val = date_get_num(&p, 0, 23, 2); |
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if (val == -1) |
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return NULL; |
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dt->tm_hour = val; |
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break; |
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case 'M': |
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val = date_get_num(&p, 0, 59, 2); |
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if (val == -1) |
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return NULL; |
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dt->tm_min = val; |
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break; |
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case 'S': |
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val = date_get_num(&p, 0, 59, 2); |
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if (val == -1) |
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return NULL; |
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dt->tm_sec = val; |
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break; |
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case 'Y': |
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val = date_get_num(&p, 0, 9999, 4); |
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if (val == -1) |
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return NULL; |
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dt->tm_year = val - 1900; |
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break; |
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case 'm': |
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val = date_get_num(&p, 1, 12, 2); |
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if (val == -1) |
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return NULL; |
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dt->tm_mon = val - 1; |
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break; |
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case 'd': |
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val = date_get_num(&p, 1, 31, 2); |
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if (val == -1) |
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return NULL; |
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dt->tm_mday = val; |
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break; |
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case '%': |
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goto match; |
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default: |
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return NULL; |
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} |
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} else { |
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match: |
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if (c != *p) |
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return NULL; |
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p++; |
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} |
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} |
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return p; |
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} |
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|
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