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LibTextCodec+AK: Don't validate UTF-8 strings twice

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UTF8Decoder was already converting invalid data into replacement
characters while converting, so we know for sure we have valid UTF-8
by the time conversion is finished.

This patch adds a new StringBuilder::to_string_without_validation()
and uses it to make UTF8Decoder avoid half the work it was doing.
This commit is contained in:
Andreas Kling 2023-12-29 15:30:15 +01:00
parent a285e36041
commit 3c039903fb
5 changed files with 22 additions and 1 deletions
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2
Userland/Libraries/LibTextCodec/Decoder.cpp
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@ -247,7 +247,7 @@ ErrorOr<String> Decoder::to_utf8(StringView input)
{
StringBuilder builder(input.length());
TRY(process(input, [&builder](u32 c) { return builder.try_append_code_point(c); }));
return builder.to_string();
return builder.to_string_without_validation();
}
ErrorOr<void> UTF8Decoder::process(StringView input, Function<ErrorOr<void>(u32)> on_code_point)