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authorKelly Rauchenberger <fefferburbia@gmail.com>2018-08-05 15:58:14 -0400
committerKelly Rauchenberger <fefferburbia@gmail.com>2018-08-05 15:58:14 -0400
commitb7bb942cadfe3d657895af1557b78acc2559947e (patch)
tree66ec390ba1b30c4d3012c3ec3526f9489c41d8f9 /src/util.cpp
parent204181c5654cee745b6b1ba98675609e784f0ee1 (diff)
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Tweets store their created time
C/C++ time handling is awful, pass it on
Diffstat (limited to 'src/util.cpp')
-rw-r--r--src/util.cpp37
1 files changed, 37 insertions, 0 deletions
diff --git a/src/util.cpp b/src/util.cpp new file mode 100644 index 0000000..5952138 --- /dev/null +++ b/src/util.cpp
@@ -0,0 +1,37 @@
1#include "util.h"
2
3namespace twitter {
4
5 // Eric S Raymond wrote this
6 /* struct tm to seconds since Unix epoch */
7 time_t timegm(struct tm * t)
8 {
9 long year;
10 time_t result;
11 #define MONTHSPERYEAR 12 /* months per calendar year */
12 static const int cumdays[MONTHSPERYEAR] =
13 { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334 };
14
15 /*@ +matchanyintegral @*/
16 year = 1900 + t->tm_year + t->tm_mon / MONTHSPERYEAR;
17 result = (year - 1970) * 365 + cumdays[t->tm_mon % MONTHSPERYEAR];
18 result += (year - 1968) / 4;
19 result -= (year - 1900) / 100;
20 result += (year - 1600) / 400;
21 if ((year % 4) == 0 && ((year % 100) != 0 || (year % 400) == 0) &&
22 (t->tm_mon % MONTHSPERYEAR) < 2)
23 result--;
24 result += t->tm_mday - 1;
25 result *= 24;
26 result += t->tm_hour;
27 result *= 60;
28 result += t->tm_min;
29 result *= 60;
30 result += t->tm_sec;
31 if (t->tm_isdst == 1)
32 result -= 3600;
33 /*@ -matchanyintegral @*/
34 return (result);
35 }
36
37}