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Diffstat (limited to 'lib/etl/u16string.h')
| -rw-r--r-- | lib/etl/u16string.h | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/lib/etl/u16string.h b/lib/etl/u16string.h new file mode 100644 index 0000000..a7ca2b5 --- /dev/null +++ b/lib/etl/u16string.h @@ -0,0 +1,189 @@ +///\file + +/****************************************************************************** +The MIT License(MIT) + +Embedded Template Library. +https://github.com/ETLCPP/etl +http://www.etlcpp.com + +Copyright(c) 2016 jwellbelove + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files(the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and / or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions : + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. +******************************************************************************/ + +#ifndef __ETL_U16STRING__ +#define __ETL_U16STRING__ + +#include "platform.h" +#include "basic_string.h" + +#if defined(ETL_COMPILER_MICROSOFT) + #undef min +#endif + +namespace etl +{ + typedef ibasic_string<char16_t> iu16string; + + //*************************************************************************** + /// A u16string implementation that uses a fixed size buffer. + ///\tparam MAX_SIZE_ The maximum number of elements that can be stored. + ///\ingroup u16string + //*************************************************************************** + template <const size_t MAX_SIZE_> + class u16string : public iu16string + { + public: + + typedef iu16string::value_type value_type; + + static const size_t MAX_SIZE = MAX_SIZE_; + + //************************************************************************* + /// Constructor. + //************************************************************************* + u16string() + : iu16string(reinterpret_cast<value_type*>(&buffer), MAX_SIZE) + { + iu16string::initialise(); + } + + //************************************************************************* + /// Copy constructor. + ///\param other The other string. + //************************************************************************* + u16string(const etl::u16string<MAX_SIZE_>& other) + : iu16string(reinterpret_cast<value_type*>(&buffer), MAX_SIZE) + { + iu16string::initialise(); + iu16string::assign(other.begin(), other.end()); + } + + //************************************************************************* + /// From other string, position, length. + ///\param other The other string. + ///\param position The position of the first character. + ///\param length The number of characters. Default = npos. + //************************************************************************* + u16string(const etl::u16string<MAX_SIZE_>& other, size_t position, size_t length = npos) + : iu16string(reinterpret_cast<value_type*>(&buffer), MAX_SIZE) + { + ETL_ASSERT(position < other.size(), ETL_ERROR(string_out_of_bounds)); + + // Set the length to the exact amount. + length = (length > MAX_SIZE_) ? MAX_SIZE_ : length; + + iu16string::initialise(); + iu16string::assign(other.begin() + position, other.begin() + position + length); + } + + //************************************************************************* + /// Constructor, from null terminated text. + ///\param text The initial text of the u16string. + //************************************************************************* + u16string(const value_type* text) + : iu16string(reinterpret_cast<value_type*>(&buffer), MAX_SIZE) + { + iu16string::initialise(); + iu16string::assign(text, text + etl::char_traits<value_type>::length(text)); + } + + //************************************************************************* + /// Constructor, from null terminated text and count. + ///\param text The initial text of the u16string. + ///\param count The number of characters to copy. + //************************************************************************* + u16string(const value_type* text, size_t count) + : iu16string(reinterpret_cast<value_type*>(&buffer), MAX_SIZE) + { + iu16string::initialise(); + iu16string::assign(text, text + count); + } + + //************************************************************************* + /// Constructor, from initial size and value. + ///\param initialSize The initial size of the u16string. + ///\param value The value to fill the u16string with. + //************************************************************************* + u16string(size_t count, value_type c) + : iu16string(reinterpret_cast<value_type*>(&buffer), MAX_SIZE) + { + iu16string::initialise(); + iu16string::resize(count, c); + } + + //************************************************************************* + /// Constructor, from an iterator range. + ///\tparam TIterator The iterator type. + ///\param first The iterator to the first element. + ///\param last The iterator to the last element + 1. + //************************************************************************* + template <typename TIterator> + u16string(TIterator first, TIterator last) + : iu16string(reinterpret_cast<value_type*>(&buffer), MAX_SIZE) + { + iu16string::assign(first, last); + } + + //************************************************************************* + /// Returns a sub-string. + ///\param position The position of the first character. Default = 0. + ///\param length The number of characters. Default = npos. + //************************************************************************* + etl::u16string<MAX_SIZE_> substr(size_t position = 0, size_t length = npos) const + { + etl::u16string<MAX_SIZE_> new_string; + + if (position != size()) + { + ETL_ASSERT(position < size(), ETL_ERROR(string_out_of_bounds)); + + length = std::min(length, size() - position); + + new_string.assign(buffer + position, buffer + position + length); + } + + return new_string; + } + + //************************************************************************* + /// Assignment operator. + //************************************************************************* + u16string& operator = (const u16string& rhs) + { + if (&rhs != this) + { + iu16string::assign(rhs.cbegin(), rhs.cend()); + } + + return *this; + } + + private: + + value_type buffer[MAX_SIZE + 1]; + }; +} + +#if defined(ETL_COMPILER_MICROSOFT) + #define min(a,b) (((a) < (b)) ? (a) : (b)) +#endif + +#endif |