added class Stream (textstream/stream.h) which acts as a base class for TextStream
TextStream is making conversions wide/utf8 now
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/*
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* This file is a part of PikoTools
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* and is distributed under the (new) BSD licence.
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* Author: Tomasz Sowa <t.sowa@ttmath.org>
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*/
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/*
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* Copyright (c) 2021, Tomasz Sowa
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* * Neither the name Tomasz Sowa nor the names of contributors to this
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* project may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef headerfile_picotools_textstream_stream
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#define headerfile_picotools_textstream_stream
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#include <string>
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namespace pt
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{
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class Space;
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class Date;
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class Stream
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{
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public:
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virtual ~Stream() {};
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virtual void clear() = 0;
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virtual bool empty() const = 0;
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virtual size_t size() const = 0;
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virtual void reserve(size_t len) = 0;
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virtual size_t capacity() const = 0;
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virtual void to_string(std::string & str, bool clear_string = true) const = 0;
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virtual void to_string(std::wstring & str, bool clear_string = true) const = 0;
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virtual Stream & operator<<(const char * str) = 0;
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virtual Stream & operator<<(const std::string & str) = 0;
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virtual Stream & operator<<(const wchar_t * str) = 0;
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virtual Stream & operator<<(const std::wstring & str) = 0;
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virtual Stream & operator<<(char) = 0;
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virtual Stream & operator<<(unsigned char) = 0;
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virtual Stream & operator<<(wchar_t) = 0;
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virtual Stream & operator<<(bool) = 0;
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virtual Stream & operator<<(short) = 0;
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virtual Stream & operator<<(int) = 0;
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virtual Stream & operator<<(long) = 0;
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virtual Stream & operator<<(long long) = 0;
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virtual Stream & operator<<(unsigned short) = 0;
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virtual Stream & operator<<(unsigned int) = 0;
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virtual Stream & operator<<(unsigned long) = 0;
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virtual Stream & operator<<(unsigned long long) = 0;
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virtual Stream & operator<<(float) = 0;
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virtual Stream & operator<<(double) = 0;
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virtual Stream & operator<<(long double) = 0;
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virtual Stream & operator<<(const void *) = 0; // printing a pointer
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virtual Stream & operator<<(const Space & space) = 0;
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virtual Stream & operator<<(const Date & date) = 0;
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// min width for integer output
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// if the output value has less digits then first zeroes are added
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// (0 turn off)
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//Stream & int_min_width(size_t min_width);
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// template<typename arg_char_type, size_t arg_stack_size, size_t arg_heap_block_size>
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// Stream & operator<<(const Stream<arg_char_type, arg_stack_size, arg_heap_block_size> & arg);
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// template<typename in_buffer_type>
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// Stream & write(const in_buffer_type * buf, size_t len);
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// write double value in a specified format
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// format is the same as in the snprintf function, e.g. write("%f", 10.0)
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//virtual Stream & write(const char * format, double val) = 0;
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//virtual Stream & write(const wchar_t * format, double val) = 0;
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// what is it?
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//Stream & fill_up_if_needed(wchar_t fill_up_char, size_t existing_length);
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};
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}
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#endif
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@ -39,11 +39,13 @@
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#define headerfile_picotools_textstream_textstream
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#include <string>
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#include "stream.h"
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#include "space/space.h"
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#include "date/date.h"
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#include "convert/inttostr.h"
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#include "membuffer/membuffer.h"
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#include "types.h"
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#include "utf8/utf8.h"
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// for snprintf
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#include <cstdio>
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@ -58,10 +60,9 @@ namespace pt
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similar to std::ostringstream
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StringType can be either std::string or std::wstring
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this class doesn't use UTF-8 in any kind
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*/
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template<typename CharT, size_t stack_size, size_t heap_block_size>
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class TextStreamBase
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class TextStreamBase : public Stream
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{
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public:
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@ -128,13 +129,13 @@ public:
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template<typename arg_char_type, size_t arg_stack_size, size_t arg_heap_block_size>
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TextStreamBase & operator<<(const TextStreamBase<arg_char_type, arg_stack_size, arg_heap_block_size> & arg);
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template<typename in_buffer_type>
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TextStreamBase & write(const in_buffer_type * buf, size_t len);
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TextStreamBase & write(const char * buf, size_t len);
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TextStreamBase & write(const wchar_t * buf, size_t len);
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// write double value in a specified format
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// format is the same as in the snprintf function, e.g. write("%f", 10.0)
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TextStreamBase & write(const char * format, double val);
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TextStreamBase & write(const wchar_t * format, double val);
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// TextStreamBase & write(const char * format, double val);
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// TextStreamBase & write(const wchar_t * format, double val);
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TextStreamBase & fill_up_if_needed(wchar_t fill_up_char, size_t existing_length);
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@ -231,10 +232,19 @@ void TextStreamBase<char_type, stack_size, heap_block_size>::to_string(std::stri
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if( str.capacity() < str.size() + size() )
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str.reserve(str.size() + size());
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if constexpr (sizeof(char_type) == sizeof(char) )
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{
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const_iterator i = begin();
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for( ; i != end() ; ++i)
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str += static_cast<char>(*i);
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str += *i;
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}
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else
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{
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// test me
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wide_stream_to_utf8(*this, str);
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}
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}
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@ -248,10 +258,20 @@ void TextStreamBase<char_type, stack_size, heap_block_size>::to_string(std::wstr
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if( str.capacity() < str.size() + size() )
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str.reserve(str.size() + size());
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if constexpr (sizeof(char_type) == sizeof(wchar_t) )
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{
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const_iterator i = begin();
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for( ; i != end() ; ++i)
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str += static_cast<wchar_t>(*i);
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str += *i;
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}
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else
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{
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// IMPROVE ME don't use a temporary object
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std::string utf8;
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to_string(utf8);
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utf8_to_wide(utf8, str, false);
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}
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}
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@ -274,9 +294,16 @@ char_type TextStreamBase<char_type, stack_size, heap_block_size>::operator[](siz
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template<typename char_type, size_t stack_size, size_t heap_block_size>
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TextStreamBase<char_type, stack_size, heap_block_size> &
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TextStreamBase<char_type, stack_size, heap_block_size>::operator<<(const char * str)
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{
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if constexpr ( sizeof(char_type) == sizeof(char) )
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{
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for( ; *str ; ++str)
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buffer.append(static_cast<char_type>(*str));
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buffer.append(*str);
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}
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else
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{
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utf8_to_wide(str, *this, false);
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}
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return *this;
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}
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TextStreamBase<char_type, stack_size, heap_block_size> &
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TextStreamBase<char_type, stack_size, heap_block_size>::operator<<(const std::string & str)
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{
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if( sizeof(char_type) == sizeof(char) )
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buffer.append(str.c_str(), str.size());
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else
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operator<<(str.c_str());
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return *this;
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template<typename char_type, size_t stack_size, size_t heap_block_size>
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TextStreamBase<char_type, stack_size, heap_block_size> &
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TextStreamBase<char_type, stack_size, heap_block_size>::operator<<(const wchar_t * str)
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{
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if constexpr (sizeof(char_type) == sizeof(wchar_t) )
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{
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for( ; *str ; ++str)
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buffer.append(static_cast<char_type>(*str));
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buffer.append(*str);
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}
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else
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{
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wide_to_utf8(str, *this);
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}
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return *this;
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}
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TextStreamBase<char_type, stack_size, heap_block_size> &
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TextStreamBase<char_type, stack_size, heap_block_size>::operator<<(const std::wstring & str)
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{
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if( sizeof(char_type) == sizeof(wchar_t) )
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buffer.append(str.c_str(), str.size());
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else
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operator<<(str.c_str());
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return *this;
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template<typename char_type, size_t stack_size, size_t heap_block_size>
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template<typename in_buffer_type>
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TextStreamBase<char_type, stack_size, heap_block_size> &
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TextStreamBase<char_type, stack_size, heap_block_size>::write(const in_buffer_type * buf, size_t len)
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TextStreamBase<char_type, stack_size, heap_block_size>::write(const char * str, size_t len)
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{
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buffer.append(buf, len);
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if constexpr ( sizeof(char_type) == sizeof(char) )
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{
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for(size_t i=0 ; i < len ; ++i)
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buffer.append(str[i]);
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}
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else
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{
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utf8_to_wide(str, *this, false);
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}
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return *this;
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}
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template<typename char_type, size_t stack_size, size_t heap_block_size>
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TextStreamBase<char_type, stack_size, heap_block_size> &
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TextStreamBase<char_type, stack_size, heap_block_size>::write(const char * format, double val)
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TextStreamBase<char_type, stack_size, heap_block_size>::write(const wchar_t * str, size_t len)
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{
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char buf[100];
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if constexpr (sizeof(char_type) == sizeof(wchar_t) )
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{
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for(size_t i=0 ; i < len ; ++i)
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buffer.append(str[i]);
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}
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else
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{
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wide_to_utf8(str, *this);
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}
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snprintf(buf, sizeof(buf)/sizeof(char), format, val);
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return operator<<(buf);
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return *this;
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}
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template<typename char_type, size_t stack_size, size_t heap_block_size>
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TextStreamBase<char_type, stack_size, heap_block_size> &
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TextStreamBase<char_type, stack_size, heap_block_size>::write(const wchar_t * format, double val)
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{
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wchar_t buf[100];
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swprintf(buf, sizeof(buf)/sizeof(wchar_t), format, val);
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return operator<<(buf);
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}
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//template<typename char_type, size_t stack_size, size_t heap_block_size>
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//TextStreamBase<char_type, stack_size, heap_block_size> &
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//TextStreamBase<char_type, stack_size, heap_block_size>::write(const char * format, double val)
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//{
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//char buf[100];
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//
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// snprintf(buf, sizeof(buf)/sizeof(char), format, val);
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// return operator<<(buf);
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//}
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//
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//
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//template<typename char_type, size_t stack_size, size_t heap_block_size>
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//TextStreamBase<char_type, stack_size, heap_block_size> &
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//TextStreamBase<char_type, stack_size, heap_block_size>::write(const wchar_t * format, double val)
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//{
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//wchar_t buf[100];
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//
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// swprintf(buf, sizeof(buf)/sizeof(wchar_t), format, val);
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// return operator<<(buf);
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//}
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}
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// not tested
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// FIX ME it is not using surrogate pairs from input stream
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// and mode parameter
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// and is not using mode parameter
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template<typename StreamType, typename function_type>
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void wide_to_utf8_generic(StreamType & buffer, int mode, function_type write_function)
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{
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