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LibTextCodec+LibWeb: Move isomorphic coders to LibTextCodec

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This will be used outside of LibWeb.
This commit is contained in:
Timothy Flynn 2025-11-24 12:20:51 -05:00 • committed by Jelle Raaijmakers
parent 0480934afb
commit 0fd80a8f99
Notes: github-actions[bot] 2025-11-27 13:59:06 +00:00
17 changed files with 65 additions and 64 deletions
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33
Libraries/LibWeb/Infra/Strings.cpp
View file

@ -156,39 +156,6 @@ ErrorOr<String> convert_to_scalar_value_string(StringView string)
return scalar_value_builder.to_string();
}
// https://infra.spec.whatwg.org/#isomorphic-encode
ByteString isomorphic_encode(StringView input)
{
// To isomorphic encode an isomorphic string input: return a byte sequence whose length is equal to input’s code
// point length and whose bytes have the same values as the values of input’s code points, in the same order.
// NB: This is essentially spec-speak for "Encode as ISO-8859-1 / Latin-1".
StringBuilder builder(input.length());
for (auto code_point : Utf8View { input }) {
// VERIFY(code_point <= 0xFF);
if (code_point > 0xFF)
dbgln("FIXME: Trying to isomorphic encode a string with code points > U+00FF.");
builder.append(static_cast<u8>(code_point));
}
return builder.to_byte_string();
}
// https://infra.spec.whatwg.org/#isomorphic-decode
String isomorphic_decode(StringView input)
{
// To isomorphic decode a byte sequence input, return a string whose code point length is equal to input’s length
// and whose code points have the same values as the values of input’s bytes, in the same order.
// NB: This is essentially spec-speak for "Decode as ISO-8859-1 / Latin-1".
StringBuilder builder(input.length());
for (auto byte : input.bytes())
builder.append_code_point(byte);
return builder.to_string_without_validation();
}
// https://infra.spec.whatwg.org/#code-unit-less-than
bool code_unit_less_than(StringView a, StringView b)
{

2
Libraries/LibWeb/Infra/Strings.h
View file

@ -20,8 +20,6 @@ WEB_API ErrorOr<String> strip_and_collapse_whitespace(StringView string);
Utf16String strip_and_collapse_whitespace(Utf16String const& string);
WEB_API bool is_code_unit_prefix(StringView potential_prefix, StringView input);
WEB_API ErrorOr<String> convert_to_scalar_value_string(StringView string);
ByteString isomorphic_encode(StringView input);
WEB_API String isomorphic_decode(StringView input);
bool code_unit_less_than(StringView a, StringView b);
}