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LibWeb: Move common date microsyntax to a separate file

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stelar7 2023-12-11 15:36:59 +01:00 • committed by Andrew Kaster
parent a72636ad8d
commit 479c48643e
5 changed files with 225 additions and 184 deletions
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185
Userland/Libraries/LibWeb/HTML/HTMLInputElement.cpp
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@ -16,6 +16,7 @@
#include <LibWeb/DOM/IDLEventListener.h>
#include <LibWeb/DOM/ShadowRoot.h>
#include <LibWeb/HTML/BrowsingContext.h>
#include <LibWeb/HTML/Dates.h>
#include <LibWeb/HTML/EventNames.h>
#include <LibWeb/HTML/HTMLDivElement.h>
#include <LibWeb/HTML/HTMLFormElement.h>
@ -781,190 +782,6 @@ static bool is_valid_simple_color(StringView value)
return true;
}
// https://html.spec.whatwg.org/multipage/common-microsyntaxes.html#valid-time-string
static bool is_valid_time_string(StringView value)
{
// A string is a valid time string representing an hour hour, a minute minute, and a second second if it consists of the following components in the given order:
// 1. Two ASCII digits, representing hour, in the range 0 ≤ hour ≤ 23
// 2. A U+003A COLON character (:)
// 3. Two ASCII digits, representing minute, in the range 0 ≤ minute ≤ 59
// 4. If second is nonzero, or optionally if second is zero:
// 1. A U+003A COLON character (:)
// 2. Two ASCII digits, representing the integer part of second, in the range 0 ≤ s ≤ 59
// 3. If second is not an integer, or optionally if second is an integer:
// 1. A U+002E FULL STOP character (.)
// 2. One, two, or three ASCII digits, representing the fractional part of second
auto parts = value.split_view(':');
if (parts.size() != 2 || parts.size() != 3)
return false;
if (parts[0].length() != 2)
return false;
auto hour = (parse_ascii_digit(parts[0][0]) * 10) + parse_ascii_digit(parts[0][1]);
if (hour > 23)
return false;
if (parts[1].length() != 2)
return false;
auto minute = (parse_ascii_digit(parts[1][0]) * 10) + parse_ascii_digit(parts[1][1]);
if (minute > 59)
return false;
if (parts.size() == 2)
return true;
if (parts[2].length() < 2)
return false;
auto second = (parse_ascii_digit(parts[2][0]) * 10) + parse_ascii_digit(parts[2][1]);
if (second > 59)
return false;
if (parts[2].length() == 2)
return true;
auto second_parts = parts[2].split_view('.');
if (second_parts.size() != 2)
return false;
if (second_parts[1].length() < 1 || second_parts[1].length() > 3)
return false;
for (auto digit : second_parts[1])
if (!is_ascii_digit(digit))
return false;
return true;
}
// https://html.spec.whatwg.org/multipage/common-microsyntaxes.html#week-number-of-the-last-day
static u32 week_number_of_the_last_day(u64 year)
{
// https://html.spec.whatwg.org/multipage/common-microsyntaxes.html#weeks
// NOTE: A year is considered to have 53 weeks if either of the following conditions are satisfied:
// - January 1 of that year is a Thursday.
// - January 1 of that year is a Wednesday and the year is divisible by 400, or divisible by 4, but not 100.
// Note: Gauss's algorithm for determining the day of the week with D = 1, and M = 0
// https://en.wikipedia.org/wiki/Determination_of_the_day_of_the_week#Gauss's_algorithm
u8 day_of_week = (1 + 5 * ((year - 1) % 4) + 4 * ((year - 1) % 100) + 6 * ((year - 1) % 400)) % 7;
if (day_of_week == 4 || (day_of_week == 3 && (year % 400 == 0 || (year % 4 == 0 && year % 100 != 0))))
return 53;
return 52;
}
// https://html.spec.whatwg.org/multipage/common-microsyntaxes.html#valid-week-string
static bool is_valid_week_string(StringView value)
{
// A string is a valid week string representing a week-year year and week week if it consists of the following components in the given order:
// 1. Four or more ASCII digits, representing year, where year > 0
// 2. A U+002D HYPHEN-MINUS character (-)
// 3. A U+0057 LATIN CAPITAL LETTER W character (W)
// 4. Two ASCII digits, representing the week week, in the range 1 ≤ week ≤ maxweek, where maxweek is the week number of the last day of week-year year
auto parts = value.split_view('-');
if (parts.size() != 2)
return false;
if (parts[0].length() < 4)
return false;
for (auto digit : parts[0])
if (!is_ascii_digit(digit))
return false;
if (parts[1].length() != 3)
return false;
if (!parts[1].starts_with('W'))
return false;
if (!is_ascii_digit(parts[1][1]))
return false;
if (!is_ascii_digit(parts[1][2]))
return false;
u64 year = 0;
for (auto d : parts[0]) {
year *= 10;
year += parse_ascii_digit(d);
}
auto week = (parse_ascii_digit(parts[1][1]) * 10) + parse_ascii_digit(parts[1][2]);
return week >= 1 && week <= week_number_of_the_last_day(year);
}
// https://html.spec.whatwg.org/multipage/common-microsyntaxes.html#valid-month-string
static bool is_valid_month_string(StringView value)
{
// A string is a valid month string representing a year year and month month if it consists of the following components in the given order:
// 1. Four or more ASCII digits, representing year, where year > 0
// 2. A U+002D HYPHEN-MINUS character (-)
// 3. Two ASCII digits, representing the month month, in the range 1 ≤ month ≤ 12
auto parts = value.split_view('-');
if (parts.size() != 2)
return false;
if (parts[0].length() < 4)
return false;
for (auto digit : parts[0])
if (!is_ascii_digit(digit))
return false;
if (parts[1].length() != 2)
return false;
if (!is_ascii_digit(parts[1][0]))
return false;
if (!is_ascii_digit(parts[1][1]))
return false;
auto month = (parse_ascii_digit(parts[1][0]) * 10) + parse_ascii_digit(parts[1][1]);
return month >= 1 && month <= 12;
}
// https://html.spec.whatwg.org/multipage/common-microsyntaxes.html#valid-date-string
static bool is_valid_date_string(StringView value)
{
// A string is a valid date string representing a year year, month month, and day day if it consists of the following components in the given order:
// 1. A valid month string, representing year and month
// 2. A U+002D HYPHEN-MINUS character (-)
// 3. Two ASCII digits, representing day, in the range 1 ≤ day ≤ maxday where maxday is the number of days in the month month and year year
auto parts = value.split_view('-');
if (parts.size() != 3)
return false;
if (!is_valid_month_string(DeprecatedString::formatted("{}-{}", parts[0], parts[1])))
return false;
if (parts[2].length() != 2)
return false;
i64 year = 0;
for (auto d : parts[0]) {
year *= 10;
year += parse_ascii_digit(d);
}
auto month = (parse_ascii_digit(parts[1][0]) * 10) + parse_ascii_digit(parts[1][1]);
i64 day = (parse_ascii_digit(parts[2][0]) * 10) + parse_ascii_digit(parts[2][1]);
return day >= 1 && day <= AK::days_in_month(year, month);
}
// https://html.spec.whatwg.org/multipage/common-microsyntaxes.html#valid-local-date-and-time-string
static bool is_valid_local_date_and_time_string(StringView value)
{
auto parts_split_by_T = value.split_view('T');
if (parts_split_by_T.size() == 2)
return is_valid_date_string(parts_split_by_T[0]) && is_valid_time_string(parts_split_by_T[1]);
auto parts_split_by_space = value.split_view(' ');
if (parts_split_by_space.size() == 2)
return is_valid_date_string(parts_split_by_space[0]) && is_valid_time_string(parts_split_by_space[1]);
return false;
}
// https://html.spec.whatwg.org/multipage/common-microsyntaxes.html#valid-normalised-local-date-and-time-string
static String normalize_local_date_and_time_string(String const& value)
{
VERIFY(value.count(" "sv) == 1);
return MUST(value.replace(" "sv, "T"sv, ReplaceMode::FirstOnly));
}
// https://html.spec.whatwg.org/multipage/input.html#value-sanitization-algorithm
String HTMLInputElement::value_sanitization_algorithm(String const& value) const
{