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time/ISO8601: support YYYY-MM (without day of month)

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Max Kellermann 2020-11-23 19:36:07 +01:00 committed by Max Kellermann
parent 764eaadd25
commit 0c28d8dcbe
3 changed files with 24 additions and 2 deletions
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19
src/time/ISO8601.cxx
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@ -1,5 +1,5 @@
/*
* Copyright 2007-2019 Content Management AG
* Copyright 2007-2020 CM4all GmbH
* All rights reserved.
*
* author: Max Kellermann <mk@cm4all.com>
@ -32,6 +32,7 @@
#include "ISO8601.hxx"
#include "Convert.hxx"
#include "Math.hxx"
#include "util/StringBuffer.hxx"
#include <cassert>
@ -169,6 +170,13 @@ ParseTimeOfDay(const char *s, struct tm &tm,
return end;
}
static bool
StrptimeFull(const char *s, const char *fmt, struct tm *tm) noexcept
{
const char *end = strptime(s, fmt, tm);
return end != nullptr && *end == 0;
}
#endif
std::pair<std::chrono::system_clock::time_point,
@ -184,6 +192,15 @@ ParseISO8601(const char *s)
#else
struct tm tm{};
if (StrptimeFull(s, "%Y-%m", &tm)) {
/* full month */
tm.tm_mday = 1;
const auto start = TimeGm(tm);
EndOfMonth(tm);
const auto end = TimeGm(tm);
return {start, end - start};
}
/* parse the date */
const char *end = strptime(s, "%F", &tm);
if (end == nullptr) {

2
src/time/ISO8601.hxx
View File

@ -1,5 +1,5 @@
/*
* Copyright 2007-2019 Content Management AG
* Copyright 2007-2020 CM4all GmbH
* All rights reserved.
*
* author: Max Kellermann <mk@cm4all.com>

5
test/time/TestISO8601.cxx
View File

@ -46,6 +46,11 @@ static constexpr struct {
{ "2018-12-31T23:59:59Z", 1546300799, std::chrono::seconds(1) },
{ "2019-01-01T00:00:00Z", 1546300800, std::chrono::seconds(1) },
/* full month */
{ "1970-01", 0, std::chrono::hours(24 * 31) },
{ "2019-02", 1548979200, std::chrono::hours(24 * 28) },
{ "2019-01", 1546300800, std::chrono::hours(24 * 31) },
/* only date */
{ "1970-01-01", 0, std::chrono::hours(24) },
{ "2019-02-04", 1549238400, std::chrono::hours(24) },