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time/ISO8601: move code to ParseTimeOfDay()

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This commit is contained in:
Max Kellermann 2019-12-23 17:06:15 +01:00
parent 7770298a65
commit 2bc127bb43
1 changed files with 26 additions and 15 deletions
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41
src/time/ISO8601.cxx
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@ -108,6 +108,30 @@ ParseTimeZoneOffset(const char *&s)
return d;
}
static const char *
ParseTimeOfDay(const char *s, struct tm &tm,
std::chrono::system_clock::duration &precision) noexcept
{
const char *end;
if ((end = strptime(s, "%T", &tm)) != nullptr)
precision = std::chrono::seconds(1);
else if ((end = strptime(s, "%H%M%S", &tm)) != nullptr)
/* no field separators */
precision = std::chrono::seconds(1);
else if ((end = strptime(s, "%H%M", &tm)) != nullptr)
/* no field separators */
precision = std::chrono::minutes(1);
else if ((end = strptime(s, "%H:%M", &tm)) != nullptr)
precision = std::chrono::minutes(1);
else if ((end = strptime(s, "%H", &tm)) != nullptr)
precision = std::chrono::hours(1);
else
return nullptr;
return end;
}
std::pair<std::chrono::system_clock::time_point,
std::chrono::system_clock::duration>
ParseISO8601(const char *s)
@ -138,22 +162,9 @@ ParseISO8601(const char *s)
if (*s == 'T') {
++s;
if ((end = strptime(s, "%T", &tm)) != nullptr)
precision = std::chrono::seconds(1);
else if ((end = strptime(s, "%H%M%S", &tm)) != nullptr)
/* no field separators */
precision = std::chrono::seconds(1);
else if ((end = strptime(s, "%H%M", &tm)) != nullptr)
/* no field separators */
precision = std::chrono::minutes(1);
else if ((end = strptime(s, "%H:%M", &tm)) != nullptr)
precision = std::chrono::minutes(1);
else if ((end = strptime(s, "%H", &tm)) != nullptr)
precision = std::chrono::hours(1);
else
s = ParseTimeOfDay(s, tm, precision);
if (s == nullptr)
throw std::runtime_error("Failed to parse time of day");
s = end;
}
auto tp = TimeGm(tm);