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feat: check date and time are valid or not

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ToruNiina 2021-12-15 00:31:41 +09:00
parent 1b5107e5e3
commit 518e6d4ae2
1 changed files with 52 additions and 12 deletions
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64
toml/parser.hpp
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@ -736,11 +736,28 @@ parse_local_date(location& loc)
const auto month = static_cast<std::int8_t >(from_string<int>(m.unwrap().str(), 0));
const auto day = static_cast<std::int8_t >(from_string<int>(d.unwrap().str(), 0));
// this could be improved a bit more, but is it ... really ... needed?
if(31 < day)
// We briefly check whether the input date is valid or not. But here, we
// only check if the RFC3339 compliance.
// Actually there are several special date that does not exist,
// because of historical reasons, such as 1582/10/5-1582/10/14 (only in
// several countries). But here, we do not care about such a complicated
// rule. It makes the code complicated and there is only low probability
// that such a specific date is needed in practice. If someone need to
// validate date accurately, that means that the one need a specialized
// library for their purpose in a different layer.
{
throw syntax_error(format_underline("toml::parse_date: invalid date",
{{source_location(loc), "here"}}), source_location(loc));
const bool is_leap = (year % 4 == 0) && ((year % 100 != 0) || (year % 400 == 0));
const auto max_day = (month == 2) ? (is_leap ? 29 : 28) :
((month == 4 || month == 6 || month == 9 || month == 11) ? 30 : 31);
if((month < 1 || 12 < month) || (day < 1 || max_day < day))
{
throw syntax_error(format_underline("toml::parse_date: "
"invalid date: it does not conform RFC3339.", {{
source_location(loc), "month should be 01-12, day should be"
" 01-28,29,30,31, depending on month/year."
}}), source_location(inner_loc));
}
}
return ok(std::make_pair(local_date(year, static_cast<month_t>(month - 1), day),
token.unwrap()));
@ -787,10 +804,22 @@ parse_local_time(location& loc)
{{source_location(inner_loc), "here"}}),
source_location(inner_loc));
}
local_time time(
from_string<int>(h.unwrap().str(), 0),
from_string<int>(m.unwrap().str(), 0),
from_string<int>(s.unwrap().str(), 0), 0, 0);
const int hour = from_string<int>(h.unwrap().str(), 0);
const int minute = from_string<int>(m.unwrap().str(), 0);
const int second = from_string<int>(s.unwrap().str(), 0);
if((hour < 0 || 23 < hour) || (minute < 0 || 59 < minute) ||
(second < 0 || 60 < second)) // it may be leap second
{
throw syntax_error(format_underline("toml::parse_time: "
"invalid time: it does not conform RFC3339.", {{
source_location(loc), "hour should be 00-23, minute should be"
" 00-59, second should be 00-60 (depending on the leap"
" second rules.)"}}), source_location(inner_loc));
}
local_time time(hour, minute, second, 0, 0);
const auto before_secfrac = inner_loc.iter();
if(const auto secfrac = lex_time_secfrac::invoke(inner_loc))
@ -904,15 +933,26 @@ parse_offset_datetime(location& loc)
if(const auto ofs = lex_time_numoffset::invoke(inner_loc))
{
const auto str = ofs.unwrap().str();
const auto hour = from_string<int>(str.substr(1,2), 0);
const auto minute = from_string<int>(str.substr(4,2), 0);
if((hour < 0 || 23 < hour) || (minute < 0 || 59 < minute))
{
throw syntax_error(format_underline("toml::parse_offset_datetime: "
"invalid offset: it does not conform RFC3339.", {{
source_location(loc), "month should be 01-12, day should be"
" 01-28,29,30,31, depending on month/year."
}}), source_location(inner_loc));
}
if(str.front() == '+')
{
offset = time_offset(from_string<int>(str.substr(1,2), 0),
from_string<int>(str.substr(4,2), 0));
offset = time_offset(hour, minute);
}
else
{
offset = time_offset(-from_string<int>(str.substr(1,2), 0),
-from_string<int>(str.substr(4,2), 0));
offset = time_offset(-hour, -minute);
}
}
else if(*inner_loc.iter() != 'Z' && *inner_loc.iter() != 'z')