mirror of
https://github.com/ETLCPP/etl.git
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239 lines
8.5 KiB
C++
239 lines
8.5 KiB
C++
///\file
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/******************************************************************************
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The MIT License(MIT)
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Embedded Template Library.
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https://github.com/ETLCPP/etl
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http://www.etlcpp.com
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Copyright(c) 2016 jwellbelove
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files(the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions :
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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******************************************************************************/
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#ifndef ETL_WSTRING_INCLUDED
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#define ETL_WSTRING_INCLUDED
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#include "platform.h"
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#include "basic_string.h"
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#include "hash.h"
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#if ETL_CPP11_SUPPORTED && !defined(ETL_STLPORT) && !defined(ETL_NO_STL)
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#include <initializer_list>
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#endif
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#include "private/minmax_push.h"
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namespace etl
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{
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typedef ibasic_string<wchar_t> iwstring;
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//***************************************************************************
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/// A wstring implementation that uses a fixed size buffer.
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///\tparam MAX_SIZE_ The maximum number of elements that can be stored.
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///\ingroup wstring
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//***************************************************************************
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template <const size_t MAX_SIZE_>
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class wstring : public iwstring
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{
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public:
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typedef iwstring::value_type value_type;
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static const size_t MAX_SIZE = MAX_SIZE_;
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//*************************************************************************
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/// Constructor.
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//*************************************************************************
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wstring()
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: iwstring(reinterpret_cast<value_type*>(&buffer), MAX_SIZE)
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{
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this->initialise();
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}
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//*************************************************************************
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/// Copy constructor.
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///\param other The other string.
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//*************************************************************************
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wstring(const etl::wstring<MAX_SIZE_>& other)
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: iwstring(reinterpret_cast<value_type*>(&buffer), MAX_SIZE)
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{
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wstring::initialise();
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wstring::assign(other.begin(), other.end());
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}
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//*************************************************************************
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/// From other string, position, length.
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///\param other The other string.
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///\param position The position of the first character.
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///\param length The number of characters. Default = npos.
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//*************************************************************************
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wstring(const etl::wstring<MAX_SIZE_>& other, size_t position, size_t length_ = npos)
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: iwstring(reinterpret_cast<value_type*>(&buffer), MAX_SIZE)
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{
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ETL_ASSERT(position < other.size(), ETL_ERROR(string_out_of_bounds));
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// Set the length to the exact amount.
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length_ = (length_ > MAX_SIZE_) ? MAX_SIZE_ : length_;
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this->initialise();
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this->assign(other.begin() + position, other.begin() + position + length_);
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}
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//*************************************************************************
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/// Constructor, from null terminated text.
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///\param text The initial text of the wstring.
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//*************************************************************************
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wstring(const value_type* text)
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: iwstring(reinterpret_cast<value_type*>(&buffer), MAX_SIZE)
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{
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this->initialise();
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this->assign(text, text + etl::char_traits<value_type>::length(text));
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}
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//*************************************************************************
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/// Constructor, from null terminated text and count.
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///\param text The initial text of the wstring.
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///\param count The number of characters to copy.
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//*************************************************************************
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wstring(const value_type* text, size_t count)
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: iwstring(reinterpret_cast<value_type*>(&buffer), MAX_SIZE)
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{
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this->initialise();
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this->assign(text, text + count);
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}
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//*************************************************************************
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/// Constructor, from initial size and value.
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///\param initialSize The initial size of the wstring.
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///\param value The value to fill the wstring with.
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//*************************************************************************
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wstring(size_t count, value_type c)
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: iwstring(reinterpret_cast<value_type*>(&buffer), MAX_SIZE)
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{
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this->initialise();
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this->resize(count, c);
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}
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//*************************************************************************
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/// Constructor, from an iterator range.
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///\tparam TIterator The iterator type.
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///\param first The iterator to the first element.
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///\param last The iterator to the last element + 1.
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//*************************************************************************
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template <typename TIterator>
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wstring(TIterator first, TIterator last)
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: iwstring(reinterpret_cast<value_type*>(&buffer), MAX_SIZE)
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{
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this->assign(first, last);
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}
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#if ETL_CPP11_SUPPORTED && !defined(ETL_STLPORT) && !defined(ETL_NO_STL)
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//*************************************************************************
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/// Construct from initializer_list.
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//*************************************************************************
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wstring(std::initializer_list<value_type> init)
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: iwstring(reinterpret_cast<value_type*>(&buffer), MAX_SIZE)
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{
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this->assign(init.begin(), init.end());
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}
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#endif
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//*************************************************************************
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/// Returns a sub-string.
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///\param position The position of the first character. Default = 0.
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///\param length The number of characters. Default = npos.
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//*************************************************************************
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etl::wstring<MAX_SIZE_> substr(size_t position = 0, size_t length_ = npos) const
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{
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etl::wstring<MAX_SIZE_> new_string;
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if (position != size())
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{
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ETL_ASSERT(position < size(), ETL_ERROR(string_out_of_bounds));
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length_ = std::min(length_, size() - position);
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new_string.assign(buffer + position, buffer + position + length_);
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}
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return new_string;
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}
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//*************************************************************************
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/// Assignment operator.
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//*************************************************************************
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wstring& operator = (const wstring& rhs)
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{
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if (&rhs != this)
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{
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this->assign(rhs.cbegin(), rhs.cend());
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}
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return *this;
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}
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//*************************************************************************
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/// Fix the internal pointers after a low level memory copy.
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//*************************************************************************
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#ifdef ETL_ISTRING_REPAIR_ENABLE
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virtual
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#endif
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void repair()
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{
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etl::iwstring::repair_buffer(buffer);
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}
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private:
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value_type buffer[MAX_SIZE + 1];
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};
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//*************************************************************************
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/// Hash function.
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//*************************************************************************
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#if ETL_8BIT_SUPPORT
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template <>
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struct hash<etl::iwstring>
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{
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size_t operator()(const etl::iwstring& text) const
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{
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return etl::private_hash::generic_hash<size_t>(reinterpret_cast<const uint8_t*>(&text[0]),
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reinterpret_cast<const uint8_t*>(&text[text.size()]));
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}
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};
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template <const size_t SIZE>
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struct hash<etl::wstring<SIZE> >
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{
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size_t operator()(const etl::wstring<SIZE>& text) const
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{
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return etl::private_hash::generic_hash<size_t>(reinterpret_cast<const uint8_t*>(&text[0]),
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reinterpret_cast<const uint8_t*>(&text[text.size()]));
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}
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};
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#endif
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}
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#include "private/minmax_pop.h"
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#endif
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