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/*
* Copyright 2010-2018 Max Kellermann <max.kellermann@gmail.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef STRING_BUFFER_HXX
#define STRING_BUFFER_HXX
#include <array>
/**
* A statically allocated string buffer.
*/
template<typename T, size_t CAPACITY>
class BasicStringBuffer {
public:
typedef T value_type;
typedef T &reference;
typedef T *pointer;
typedef const T *const_pointer;
typedef size_t size_type;
static constexpr value_type SENTINEL = '\0';
protected:
typedef std::array<value_type, CAPACITY> Array;
Array the_data;
public:
typedef typename Array::const_iterator const_iterator;
constexpr size_type capacity() const noexcept {
return CAPACITY;
}
constexpr bool empty() const noexcept {
return front() == SENTINEL;
}
void clear() noexcept {
the_data[0] = SENTINEL;
}
constexpr const_pointer c_str() const noexcept {
return &the_data.front();
}
pointer data() noexcept {
return &the_data.front();
}
constexpr value_type front() const noexcept {
return the_data.front();
}
/**
* Returns one character. No bounds checking.
*/
value_type operator[](size_type i) const noexcept {
return the_data[i];
}
/**
* Returns one writable character. No bounds checking.
*/
reference operator[](size_type i) noexcept {
return the_data[i];
}
constexpr const_iterator begin() const noexcept {
return the_data.begin();
}
constexpr const_iterator end() const noexcept {
return the_data.end();
}
constexpr operator const_pointer() const noexcept {
return c_str();
}
};
template<size_t CAPACITY>
class StringBuffer : public BasicStringBuffer<char, CAPACITY> {};
#endif
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