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LibWeb: Implement MimeType serialization

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This commit is contained in:
Linus Groh 2022-09-22 23:30:17 +01:00
parent d463b8e6fb
commit b42b950688
2 changed files with 42 additions and 0 deletions
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40
Userland/Libraries/LibWeb/MimeSniff/MimeType.cpp
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@ -1,5 +1,6 @@
/*
* Copyright (c) 2022, Luke Wilde <lukew@serenityos.org>
* Copyright (c) 2022, Linus Groh <linusg@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -172,6 +173,45 @@ String MimeType::essence() const
return String::formatted("{}/{}", m_type, m_subtype);
}
// https://mimesniff.spec.whatwg.org/#serialize-a-mime-type
String MimeType::serialized() const
{
// 1. Let serialization be the concatenation of mimeType’s type, U+002F (/), and mimeType’s subtype.
StringBuilder serialization;
serialization.append(m_type);
serialization.append('/');
serialization.append(m_subtype);
// 2. For each name → value of mimeType’s parameters:
for (auto [name, value] : m_parameters) {
// 1. Append U+003B (;) to serialization.
serialization.append(';');
// 2. Append name to serialization.
serialization.append(name);
// 3. Append U+003D (=) to serialization.
serialization.append('=');
// 4. If value does not solely contain HTTP token code points or value is the empty string, then:
if (!contains_only_http_token_code_points(value) || value.is_empty()) {
// 1. Precede each occurence of U+0022 (") or U+005C (\) in value with U+005C (\).
value = value.replace("\""sv, "\\\""sv, ReplaceMode::All);
value = value.replace("\\"sv, "\\\\"sv, ReplaceMode::All);
// 2. Prepend U+0022 (") to value.
// 3. Append U+0022 (") to value.
value = String::formatted("\"{}\"", value);
}
// 5. Append value to serialization.
serialization.append(value);
}
// 3. Return serialization.
return serialization.to_string();
}
void MimeType::set_parameter(String const& name, String const& value)
{
// https://mimesniff.spec.whatwg.org/#parameters

2
Userland/Libraries/LibWeb/MimeSniff/MimeType.h
View file

@ -1,5 +1,6 @@
/*
* Copyright (c) 2022, Luke Wilde <lukew@serenityos.org>
* Copyright (c) 2022, Linus Groh <linusg@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -26,6 +27,7 @@ public:
void set_parameter(String const& name, String const& value);
String essence() const;
String serialized() const;
private:
// https://mimesniff.spec.whatwg.org/#type