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LibWeb: Implement input week type sanitation algorithm

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This commit is contained in:
Kyle Lanmon 2022-12-04 00:22:00 -06:00 • committed by Linus Groh
parent 8197b7a063
commit d249a69150
1 changed files with 49 additions and 0 deletions
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49
Userland/Libraries/LibWeb/HTML/HTMLInputElement.cpp
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@ -483,6 +483,51 @@ static bool is_valid_simple_color(DeprecatedString const& value)
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)
{
// FIXME: sometimes return 53 (!)
// https://html.spec.whatwg.org/multipage/common-microsyntaxes.html#weeks
return 52;
}
// https://html.spec.whatwg.org/multipage/common-microsyntaxes.html#valid-week-string
static bool is_valid_week_string(DeprecatedString const& 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('-');
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(DeprecatedString const& value)
{
@ -593,6 +638,10 @@ DeprecatedString HTMLInputElement::value_sanitization_algorithm(DeprecatedString
// https://html.spec.whatwg.org/multipage/input.html#month-state-(type=month):value-sanitization-algorithm
if (!is_valid_month_string(value))
return "";
} else if (type_state() == HTMLInputElement::TypeAttributeState::Week) {
// https://html.spec.whatwg.org/multipage/input.html#week-state-(type=week):value-sanitization-algorithm
if (!is_valid_week_string(value))
return "";
} else if (type_state() == HTMLInputElement::TypeAttributeState::Color) {
// https://html.spec.whatwg.org/multipage/input.html#color-state-(type=color):value-sanitization-algorithm
// If the value of the element is a valid simple color, then set it to the value of the element converted to ASCII lowercase;