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winix/winixd/core/textstream.h

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/*
* This file is a part of Winix
* and is distributed under the 2-Clause BSD licence.
* Author: Tomasz Sowa <t.sowa@ttmath.org>
*/
/*
* Copyright (c) 2010-2021, Tomasz Sowa
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. 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 COPYRIGHT HOLDER 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 headerfile_winix_core_textstream
#define headerfile_winix_core_textstream
#include <string>
#include <ctime>
#include "misc.h"
#include "space/space.h"
#include "date/date.h"
#include "textstream/textstream.h"
#include "utf8/utf8.h"
namespace Winix
{
/*
a special class representing a stream buffer
similar to std::ostringstream
StringType can be either std::string or std::wstring
this class uses UTF-8 <-> wide characters conversions:
if StringType is std::string:
operator<<(const char*) only copies the input string
operator<<(const wchar_t*) converts from wide characters to UTF-8
(similary for an operator with std::string and std::wstring)
if StringType is std::wstring:
operator<<(const char*) converts from UTF-8 to wide characters
operator<<(const wchar_t*) only copies the input string
(similary for an operator with std::string and std::wstring)
*/
template<class StringType>
class TextStream
{
public:
typedef typename StringType::value_type CharType;
typedef typename StringType::value_type char_type;
typedef typename StringType::iterator iterator;
typedef typename StringType::const_iterator const_iterator;
void Clear();
void clear(); // utf8 methods call clear(), in the future Clear() will be renamed to clear()
bool Empty() const;
size_t Size() const;
void Reserve(size_t len);
iterator begin();
iterator end();
const_iterator begin() const;
const_iterator end() const;
const StringType & Str() const;
const CharType * CStr() const;
void Str(const StringType & str);
void Str(const StringType && str);
void to_str(std::string & str, bool clear_string = true) const;
void to_str(std::wstring & str, bool clear_string = true) const;
void to_string(std::string & str, bool clear_string = true) const;
void to_string(std::wstring & str, bool clear_string = true) const;
CharType operator[](size_t index);
TextStream & operator<<(const char * str);
TextStream & operator<<(const std::string * str);
TextStream & operator<<(const std::string & str);
TextStream & operator<<(const wchar_t * str);
TextStream & operator<<(const std::wstring * str);
TextStream & operator<<(const std::wstring & str);
TextStream & operator<<(char);
TextStream & operator<<(wchar_t);
TextStream & operator<<(int);
TextStream & operator<<(long);
TextStream & operator<<(unsigned int);
TextStream & operator<<(unsigned long);
TextStream & operator<<(double);
TextStream & operator<<(const void *);// printing a pointer
TextStream & operator<<(const pt::Space & space);
TextStream & operator<<(const pt::Date & date);
TextStream & operator<<(const TextStream & stream);
template<typename arg_char_type, size_t arg_stack_size, size_t arg_heap_block_size>
TextStream & operator<<(const pt::TextStreamBase<arg_char_type, arg_stack_size, arg_heap_block_size> & arg);
TextStream & Write(const char * buf, size_t len);
TextStream & Write(const wchar_t * buf, size_t len);
TextStream & write(const char * buf, size_t len); // for compatibility with standard library (Ezc uses it)
TextStream & write(const wchar_t * buf, size_t len);
protected:
StringType buffer;
void Convert(wchar_t c, std::string & dst);
void Convert(wchar_t c, std::wstring & dst);
void Convert(const char * src, size_t len, std::wstring & dst);
void Convert(const char * src, std::wstring & dst);
void Convert(const std::string & src, std::wstring & dst);
void Convert(const wchar_t * src, size_t len, std::string & dst);
void Convert(const wchar_t * src, std::string & dst);
void Convert(const std::wstring & src, std::string & dst);
void Convert(const char * src, size_t len, std::string & dst);
void Convert(const char * src, std::string & dst);
void Convert(const std::string & src, std::string & dst);
void Convert(const wchar_t * src, size_t len, std::wstring & dst);
void Convert(const wchar_t * src, std::wstring & dst);
void Convert(const std::wstring & src, std::wstring & dst);
};
template<class StringType>
void TextStream<StringType>::Clear()
{
buffer.clear();
}
template<class StringType>
void TextStream<StringType>::clear()
{
Clear();
}
template<class StringType>
bool TextStream<StringType>::Empty() const
{
return buffer.empty();
}
template<class StringType>
size_t TextStream<StringType>::Size() const
{
return buffer.size();
}
template<class StringType>
void TextStream<StringType>::Reserve(size_t len)
{
buffer.reserve(len);
}
template<class StringType>
typename TextStream<StringType>::iterator TextStream<StringType>::begin()
{
return buffer.begin();
}
template<class StringType>
typename TextStream<StringType>::iterator TextStream<StringType>::end()
{
return buffer.end();
}
template<class StringType>
typename TextStream<StringType>::const_iterator TextStream<StringType>::begin() const
{
return buffer.begin();
}
template<class StringType>
typename TextStream<StringType>::const_iterator TextStream<StringType>::end() const
{
return buffer.end();
}
template<class StringType>
const StringType & TextStream<StringType>::Str() const
{
return buffer;
}
template<class StringType>
const typename TextStream<StringType>::CharType * TextStream<StringType>::CStr() const
{
return buffer.c_str();
}
template<class StringType>
void TextStream<StringType>::Str(const StringType & str)
{
buffer = str;
}
template<class StringType>
void TextStream<StringType>::Str(const StringType && str)
{
buffer = std::move(str);
}
template<class StringType>
void TextStream<StringType>::to_str(std::string & str, bool clear_string) const
{
return to_string(str, clear_string);
}
template<class StringType>
void TextStream<StringType>::to_str(std::wstring & str, bool clear_string) const
{
return to_string(str, clear_string);
}
template<class StringType>
void TextStream<StringType>::to_string(std::string & str, bool clear_string) const
{
if( clear_string )
str.clear();
if constexpr (sizeof(typename StringType::value_type) == sizeof(char))
{
str.append(buffer);
}
else
{
pt::wide_to_utf8(buffer, str, false);
}
}
template<class StringType>
void TextStream<StringType>::to_string(std::wstring & str, bool clear_string) const
{
if( clear_string )
str.clear();
if constexpr (sizeof(typename StringType::value_type) == sizeof(wchar_t))
{
str.append(buffer);
}
else
{
pt::utf8_to_wide(buffer, str, false);
}
}
template<class StringType>
typename TextStream<StringType>::CharType TextStream<StringType>::operator[](size_t index)
{
return buffer[index];
}
template<class StringType>
TextStream<StringType> & TextStream<StringType>::operator<<(const char * str)
{
Convert(str, buffer);
return *this;
}
template<class StringType>
TextStream<StringType> & TextStream<StringType>::operator<<(const std::string * str)
{
Convert(*str, buffer);
return *this;
}
template<class StringType>
TextStream<StringType> & TextStream<StringType>::operator<<(const std::string & str)
{
Convert(str, buffer);
return *this;
}
template<class StringType>
TextStream<StringType> & TextStream<StringType>::operator<<(const wchar_t * str)
{
Convert(str, buffer);
return *this;
}
template<class StringType>
TextStream<StringType> & TextStream<StringType>::operator<<(const std::wstring * str)
{
Convert(*str, buffer);
return *this;
}
template<class StringType>
TextStream<StringType> & TextStream<StringType>::operator<<(const std::wstring & str)
{
Convert(str, buffer);
return *this;
}
template<class StringType>
TextStream<StringType> & TextStream<StringType>::operator<<(char v)
{
/*
* there is no any possibility to treat 'v' as UTF-8 character if we have got
* only one character so we only copy it
*/
buffer += v;
return *this;
}
template<class StringType>
TextStream<StringType> & TextStream<StringType>::operator<<(wchar_t v)
{
Convert(v, buffer);
return *this;
}
template<class StringType>
TextStream<StringType> & TextStream<StringType>::operator<<(int v)
{
wchar_t buf[50];
size_t len = sizeof(buf) / sizeof(wchar_t);
Toa(v, buf, len);
Convert(buf, buffer);
return *this;
}
template<class StringType>
TextStream<StringType> & TextStream<StringType>::operator<<(long v)
{
wchar_t buf[50];
size_t len = sizeof(buf) / sizeof(wchar_t);
Toa(v, buf, len);
Convert(buf, buffer);
return *this;
}
template<class StringType>
TextStream<StringType> & TextStream<StringType>::operator<<(unsigned int v)
{
wchar_t buf[50];
size_t len = sizeof(buf) / sizeof(wchar_t);
Toa(v, buf, len);
Convert(buf, buffer);
return *this;
}
template<class StringType>
TextStream<StringType> & TextStream<StringType>::operator<<(unsigned long v)
{
wchar_t buf[50];
size_t len = sizeof(buf) / sizeof(wchar_t);
Toa(v, buf, len);
Convert(buf, buffer);
return *this;
}
template<class StringType>
TextStream<StringType> & TextStream<StringType>::operator<<(double v)
{
char buf[50];
sprintf(buf, "%f", v);
Convert(buf, buffer);
return *this;
}
template<class StringType>
TextStream<StringType> & TextStream<StringType>::operator<<(const void * v)
{
wchar_t buf[50];
size_t len = sizeof(buf) / sizeof(wchar_t);
buf[0] = '0';
buf[1] = 'x';
Toa(reinterpret_cast<unsigned long>(v), buf+2, len-2, 16);
Convert(buf, buffer);
return *this;
}
template<class StringType>
TextStream<StringType> & TextStream<StringType>::Write(const char * buf, size_t len)
{
Convert(buf, len, buffer);
return *this;
}
template<class StringType>
TextStream<StringType> & TextStream<StringType>::write(const char * buf, size_t len)
{
return Write(buf, len);
}
template<class StringType>
TextStream<StringType> & TextStream<StringType>::Write(const wchar_t * buf, size_t len)
{
Convert(buf, len, buffer);
return *this;
}
template<class StringType>
TextStream<StringType> & TextStream<StringType>::write(const wchar_t * buf, size_t len)
{
return Write(buf, len);
}
template<class StringType>
TextStream<StringType> & TextStream<StringType>::operator<<(const pt::Space & space)
{
space.serialize_to_space_stream(*this, true);
return *this;
}
template<class StringType>
TextStream<StringType> & TextStream<StringType>::operator<<(const pt::Date & date)
{
date.Serialize(*this);
return *this;
}
template<class StringType>
TextStream<StringType> & TextStream<StringType>::operator<<(const TextStream<StringType> & stream)
{
buffer.append(stream.buffer);
return *this;
}
template<class StringType>
template<typename arg_char_type, size_t arg_stack_size, size_t arg_heap_block_size>
TextStream<StringType> & TextStream<StringType>::operator<<(
const pt::TextStreamBase<arg_char_type, arg_stack_size, arg_heap_block_size> & arg)
{
typename pt::TextStreamBase<arg_char_type, arg_stack_size, arg_heap_block_size>::const_iterator i;
for(i=arg.begin() ; i != arg.end() ; ++i)
buffer += static_cast<char_type>(*i);
return *this;
}
template<class StringType>
void TextStream<StringType>::Convert(wchar_t c, std::string & dst)
{
pt::int_to_utf8((int)c, dst, false);
}
template<class StringType>
void TextStream<StringType>::Convert(wchar_t c, std::wstring & dst)
{
dst += c;
}
template<class StringType>
void TextStream<StringType>::Convert(const char * src, size_t len, std::wstring & dst)
{
pt::utf8_to_wide(src, len, dst, false);
}
template<class StringType>
void TextStream<StringType>::Convert(const char * src, std::wstring & dst)
{
pt::utf8_to_wide(src, dst, false);
}
template<class StringType>
void TextStream<StringType>::Convert(const std::string & src, std::wstring & dst)
{
pt::utf8_to_wide(src, dst, false);
}
template<class StringType>
void TextStream<StringType>::Convert(const wchar_t * src, size_t len, std::string & dst)
{
pt::wide_to_utf8(src, len, dst, false);
}
template<class StringType>
void TextStream<StringType>::Convert(const wchar_t * src, std::string & dst)
{
pt::wide_to_utf8(src, dst, false);
}
template<class StringType>
void TextStream<StringType>::Convert(const std::wstring & src, std::string & dst)
{
pt::wide_to_utf8(src, dst, false);
}
template<class StringType>
void TextStream<StringType>::Convert(const char * src, size_t len, std::string & dst)
{
// we suppose that append is smart enough and we don't have to use reserve()
dst.append(src, len);
}
template<class StringType>
void TextStream<StringType>::Convert(const char * src, std::string & dst)
{
size_t len;
for(len=0 ; src[len] ; ++len){}
Convert(src, len, dst);
}
template<class StringType>
void TextStream<StringType>::Convert(const std::string & src, std::string & dst)
{
dst.append(src);
}
template<class StringType>
void TextStream<StringType>::Convert(const wchar_t * src, size_t len, std::wstring & dst)
{
// we suppose that append is smart enough and we don't have to use reserve()
dst.append(src, len);
}
template<class StringType>
void TextStream<StringType>::Convert(const wchar_t * src, std::wstring & dst)
{
size_t len;
for(len=0 ; src[len] ; ++len){}
Convert(src, len, dst);
}
template<class StringType>
void TextStream<StringType>::Convert(const std::wstring & src, std::wstring & dst)
{
dst.append(src);
}
} // namespace Winix
#endif