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Add explanatory comments to the parse_date function.

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patch by Stefano Sabatini, stefano.sabatini-lala poste it

Originally committed as revision 10525 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Stefano Sabatini 2007-09-18 08:26:10 +00:00 committed by Diego Biurrun
parent dbd255cda1
commit a8f70d72c3
1 changed files with 8 additions and 0 deletions
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8
libavformat/utils.c
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@ -2579,6 +2579,7 @@ int64_t parse_date(const char *datestr, int duration)
p = datestr; p = datestr;
q = NULL; q = NULL;
if (!duration) { if (!duration) {
/* parse the year-month-day part */
for (i = 0; i < sizeof(date_fmt) / sizeof(date_fmt[0]); i++) { for (i = 0; i < sizeof(date_fmt) / sizeof(date_fmt[0]); i++) {
q = small_strptime(p, date_fmt[i], &dt); q = small_strptime(p, date_fmt[i], &dt);
if (q) { if (q) {
@ -2586,6 +2587,8 @@ int64_t parse_date(const char *datestr, int duration)
} }
} }
/* if the year-month-day part is missing, then take the
* current year-month-day time */
if (!q) { if (!q) {
if (is_utc) { if (is_utc) {
dt = *gmtime(&now); dt = *gmtime(&now);
@ -2600,6 +2603,7 @@ int64_t parse_date(const char *datestr, int duration)
if (*p == 'T' || *p == 't' || *p == ' ') if (*p == 'T' || *p == 't' || *p == ' ')
p++; p++;
/* parse the hour-minute-second part */
for (i = 0; i < sizeof(time_fmt) / sizeof(time_fmt[0]); i++) { for (i = 0; i < sizeof(time_fmt) / sizeof(time_fmt[0]); i++) {
q = small_strptime(p, time_fmt[i], &dt); q = small_strptime(p, time_fmt[i], &dt);
if (q) { if (q) {
@ -2607,12 +2611,15 @@ int64_t parse_date(const char *datestr, int duration)
} }
} }
} else { } else {
/* parse datestr as a duration */
if (p[0] == '-') { if (p[0] == '-') {
negative = 1; negative = 1;
++p; ++p;
} }
/* parse datestr as HH:MM:SS */
q = small_strptime(p, time_fmt[0], &dt); q = small_strptime(p, time_fmt[0], &dt);
if (!q) { if (!q) {
/* parse datestr as S+ */
dt.tm_sec = strtol(p, (char **)&q, 10); dt.tm_sec = strtol(p, (char **)&q, 10);
dt.tm_min = 0; dt.tm_min = 0;
dt.tm_hour = 0; dt.tm_hour = 0;
@ -2640,6 +2647,7 @@ int64_t parse_date(const char *datestr, int duration)
t *= 1000000; t *= 1000000;
/* parse the .m... part */
if (*q == '.') { if (*q == '.') {
int val, n; int val, n;
q++; q++;