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LibTextCodec: Implement iso-2022-jp encoder

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Implements the `iso-2022-jp` encoder, as specified by
https://encoding.spec.whatwg.org/#iso-2022-jp-encoder
This commit is contained in:
BenJilks 2024-08-06 11:06:05 +01:00 • committed by Tim Ledbetter
commit 0ca5675d59
Notes: github-actions[bot] 2024-08-08 16:50:57 +00:00
5 changed files with 255 additions and 61 deletions
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57
Userland/Libraries/LibURL/Parser.cpp
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@ -775,31 +775,42 @@ ErrorOr<String> Parser::percent_encode_after_encoding(TextCodec::Encoder& encode
// 1. Let encodeOutput be an empty I/O queue.
StringBuilder output;
// 3. For each byte of encodeOutput converted to a byte sequence:
TRY(encoder.process(Utf8View(input), [&](u8 byte) -> ErrorOr<void> {
// 1. If spaceAsPlus is true and byte is 0x20 (SP), then append U+002B (+) to output and continue.
if (space_as_plus && byte == ' ') {
output.append('+');
// 2. Set potentialError to the result of running encode or fail with inputQueue, encoder, and encodeOutput.
TRY(encoder.process(
Utf8View(input),
// 3. For each byte of encodeOutput converted to a byte sequence:
[&](u8 byte) -> ErrorOr<void> {
// 1. If spaceAsPlus is true and byte is 0x20 (SP), then append U+002B (+) to output and continue.
if (space_as_plus && byte == ' ') {
output.append('+');
return {};
}
// 2. Let isomorph be a code point whose value is byte’s value.
u32 isomorph = byte;
// 3. Assert: percentEncodeSet includes all non-ASCII code points.
// 4. If isomorphic is not in percentEncodeSet, then append isomorph to output.
if (!code_point_is_in_percent_encode_set(isomorph, percent_encode_set)) {
output.append_code_point(isomorph);
}
// 5. Otherwise, percent-encode byte and append the result to output.
else {
output.appendff("%{:02X}", byte);
}
return {};
}
},
// 2. Let isomorph be a code point whose value is byte’s value.
u32 isomorph = byte;
// 3. Assert: percentEncodeSet includes all non-ASCII code points.
// 4. If isomorphic is not in percentEncodeSet, then append isomorph to output.
if (!code_point_is_in_percent_encode_set(isomorph, percent_encode_set)) {
output.append_code_point(isomorph);
}
// 5. Otherwise, percent-encode byte and append the result to output.
else {
output.appendff("%{:02X}", byte);
}
return {};
}));
// 4. If potentialError is non-null, then append "%26%23", followed by the shortest sequence of ASCII digits
// representing potentialError in base ten, followed by "%3B", to output.
[&](u32 error) -> ErrorOr<void> {
output.appendff("%26%23{}%3B", error);
return {};
}));
// 6. Return output.
return output.to_string();