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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/ByteBuffer.h>
#include <AK/Format.h>
#include <AK/Forward.h>
#include <AK/StringView.h>
#include <stdarg.h>
namespace AK {
class StringBuilder {
public:
using OutputType = String;
explicit StringBuilder(size_t initial_capacity = inline_capacity);
~StringBuilder() = default;
void append(const StringView&);
void append(const Utf32View&);
void append(char);
void append_code_point(u32);
void append(const char*, size_t);
void appendf(const char*, ...) __attribute__((format(printf, 2, 3)));
void appendvf(const char*, va_list);
void append_escaped_for_json(const StringView&);
template<typename... Parameters>
void appendff(CheckedFormatString<Parameters...>&& fmtstr, const Parameters&... parameters)
{
vformat(*this, fmtstr.view(), VariadicFormatParams { parameters... });
}
[[nodiscard]] String build() const;
[[nodiscard]] String to_string() const;
[[nodiscard]] ByteBuffer to_byte_buffer() const;
[[nodiscard]] StringView string_view() const;
void clear();
[[nodiscard]] size_t length() const { return m_length; }
[[nodiscard]] bool is_empty() const { return m_length == 0; }
void trim(size_t count) { m_length -= count; }
template<class SeparatorType, class CollectionType>
void join(const SeparatorType& separator, const CollectionType& collection)
{
bool first = true;
for (auto& item : collection) {
if (first)
first = false;
else
append(separator);
append(item);
}
}
private:
void will_append(size_t);
u8* data() { return m_buffer.is_null() ? m_inline_buffer : m_buffer.data(); }
const u8* data() const { return m_buffer.is_null() ? m_inline_buffer : m_buffer.data(); }
bool using_inline_buffer() const { return m_buffer.is_null(); }
static constexpr size_t inline_capacity = 128;
u8 m_inline_buffer[inline_capacity];
ByteBuffer m_buffer;
size_t m_length { 0 };
};
}
using AK::StringBuilder;
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