/usr/include/osmium/utils/timestamp.hpp is in libosmium-dev 0.0~20140910-9a069af-1+b1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 | #ifndef OSMIUM_UTILS_TIMESTAMP_HPP
#define OSMIUM_UTILS_TIMESTAMP_HPP
/*
Copyright 2012 Jochen Topf <jochen@topf.org> and others (see README).
This file is part of Osmium (https://github.com/joto/osmium).
Osmium is free software: you can redistribute it and/or modify it under the
terms of the GNU Lesser General Public License or (at your option) the GNU
General Public License as published by the Free Software Foundation, either
version 3 of the Licenses, or (at your option) any later version.
Osmium is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE. See the GNU Lesser General Public License and the GNU
General Public License for more details.
You should have received a copy of the Licenses along with Osmium. If not, see
<http://www.gnu.org/licenses/>.
*/
#include <ctime>
#include <stdexcept>
#include <string>
namespace Osmium {
/**
* Contains some helper functions to convert timestamps from time_t to
* the ISO format used by OSM and back.
*/
namespace Timestamp {
namespace {
static const int timestamp_length = 20 + 1; // length of ISO timestamp string yyyy-mm-ddThh:mm:ssZ\0
/**
* The timestamp format for OSM timestamps in strftime(3) format.
* This is the ISO-Format yyyy-mm-ddThh:mm:ssZ
*/
inline const char* timestamp_format() {
static const char f[] = "%Y-%m-%dT%H:%M:%SZ";
return f;
}
}
/**
* Return UTC Unix time as string in ISO date/time format.
*/
inline std::string to_iso(time_t timestamp) {
if (timestamp == 0) {
return std::string("");
}
struct tm* tm = std::gmtime(×tamp);
std::string s(timestamp_length, '\0');
/* This const_cast is ok, because we know we have enough space
in the string for the format we are using (well at least until
the year will have 5 digits). And by setting the size
afterwards from the result of strftime we make sure thats set
right, too. */
s.resize(strftime(const_cast<char*>(s.c_str()), timestamp_length, timestamp_format(), tm));
return s;
}
/**
* Parse ISO date/time string and return UTC unix time.
* Throws std::invalid_argument, if the timestamp can not be parsed.
*/
inline time_t parse_iso(const char* timestamp) {
#ifndef WIN32
struct tm tm = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
if (strptime(timestamp, timestamp_format(), &tm) == NULL) {
throw std::invalid_argument("can't parse timestamp");
}
return timegm(&tm);
#else
struct tm tm;
int n = sscanf(timestamp, "%4d-%2d-%2dT%2d:%2d:%2dZ", &tm.tm_year, &tm.tm_mon, &tm.tm_mday, &tm.tm_hour, &tm.tm_min, &tm.tm_sec);
if (n != 6) {
throw std::invalid_argument("can't parse timestamp");
}
tm.tm_year -= 1900;
tm.tm_mon--;
tm.tm_wday = 0;
tm.tm_yday = 0;
tm.tm_isdst = 0;
return _mkgmtime(&tm);
#endif
}
} // namespace Timestamp
} // namespace Osmium
#endif // OSMIUM_UTILS_TIMESTAMP_HPP
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