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https://github.com/LadybirdBrowser/ladybird.git
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fcaf98361f
Previously ByteBuffer would internally hold a RefPtr to the byte buffer and would behave like a reference type, i.e. copying a ByteBuffer would not create a duplicate byte buffer, but rather two objects which refer to the same internal buffer. This also changes ByteBuffer so that it has some internal capacity much like the Vector<T> type. Unlike Vector<T> however a byte buffer's data may be uninitialized. With this commit ByteBuffer makes use of the kmalloc_good_size() API to pick an optimal allocation size for its internal buffer.
75 lines
1.9 KiB
C++
75 lines
1.9 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/ByteBuffer.h>
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#include <AK/Format.h>
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#include <AK/Forward.h>
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#include <AK/StringView.h>
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#include <stdarg.h>
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namespace AK {
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class StringBuilder {
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public:
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using OutputType = String;
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explicit StringBuilder(size_t initial_capacity = inline_capacity);
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~StringBuilder() = default;
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void append(const StringView&);
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void append(const Utf32View&);
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void append(char);
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void append_code_point(u32);
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void append(const char*, size_t);
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void appendvf(const char*, va_list);
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void append_escaped_for_json(const StringView&);
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template<typename... Parameters>
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void appendff(CheckedFormatString<Parameters...>&& fmtstr, const Parameters&... parameters)
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{
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vformat(*this, fmtstr.view(), VariadicFormatParams { parameters... });
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}
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[[nodiscard]] String build() const;
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[[nodiscard]] String to_string() const;
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[[nodiscard]] ByteBuffer to_byte_buffer() const;
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[[nodiscard]] StringView string_view() const;
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void clear();
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[[nodiscard]] size_t length() const { return m_length; }
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[[nodiscard]] bool is_empty() const { return m_length == 0; }
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void trim(size_t count) { m_length -= count; }
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template<class SeparatorType, class CollectionType>
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void join(const SeparatorType& separator, const CollectionType& collection)
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{
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bool first = true;
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for (auto& item : collection) {
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if (first)
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first = false;
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else
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append(separator);
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append(item);
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}
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}
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private:
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void will_append(size_t);
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u8* data() { return m_buffer.data(); }
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const u8* data() const { return m_buffer.data(); }
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static constexpr size_t inline_capacity = 128;
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AK::Detail::ByteBuffer<inline_capacity> m_buffer;
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size_t m_length { 0 };
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};
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}
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using AK::StringBuilder;
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