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add to_str(...) methods to the TextStreamBase<> class 

add such methods:
bool to_str(char * str, size_t max_buf_len) const;
bool to_str(wchar_t * str, size_t max_buf_len) const;
This commit is contained in:
Tomasz Sowa 2023-07-14 07:42:09 +02:00
parent 78d31861de
commit 172c2fcee7
Signed by: tomasz.sowa
GPG Key ID: 662CC1438638588B
1 changed files with 91 additions and 2 deletions
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93
src/textstream/textstream.h
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@ -5,7 +5,7 @@
*/
/*
* Copyright (c) 2012-2022, Tomasz Sowa
* Copyright (c) 2012-2023, Tomasz Sowa
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@ -155,6 +155,13 @@ public:
std::string to_str() const;
std::wstring to_wstr() const;
/*
* returns true if the buffer was sufficient large and there were no convertion errors
*/
bool to_str(char * str, size_t max_buf_len) const;
bool to_str(wchar_t * str, size_t max_buf_len) const;
char get_char(size_t index) const;
wchar_t get_wchar(size_t index) const;
@ -597,7 +604,6 @@ void TextStreamBase<char_type, stack_size, heap_block_size>::to_str(std::string
if( str.capacity() < str.size() + size() )
str.reserve(str.size() + size());
if constexpr (sizeof(char_type) == sizeof(char) )
{
const_iterator i = begin();
@ -658,6 +664,89 @@ std::wstring TextStreamBase<char_type, stack_size, heap_block_size>::to_wstr() c
}
template<typename char_type, size_t stack_size, size_t heap_block_size>
bool TextStreamBase<char_type, stack_size, heap_block_size>::to_str(char * str, size_t max_buf_len) const
{
bool converted_correctly = false;
if( max_buf_len > 0 )
{
if constexpr (sizeof(char_type) == sizeof(char) )
{
converted_correctly = true;
const_iterator i = begin();
const_iterator i_end = end();
size_t len = 0;
max_buf_len -= 1; // for terminating null character
for( ; i != i_end ; ++i, ++len)
{
if( len < max_buf_len )
{
str[len] = *i;
}
else
{
converted_correctly = false;
break;
}
}
str[len] = 0;
}
else
{
converted_correctly = wide_stream_to_utf8(*this, str, max_buf_len);
}
}
return converted_correctly;
}
template<typename char_type, size_t stack_size, size_t heap_block_size>
bool TextStreamBase<char_type, stack_size, heap_block_size>::to_str(wchar_t * str, size_t max_buf_len) const
{
bool converted_correctly = false;
if( max_buf_len > 0 )
{
if constexpr (sizeof(char_type) == sizeof(wchar_t) )
{
converted_correctly = true;
const_iterator i = begin();
const_iterator i_end = end();
size_t len = 0;
max_buf_len -= 1; // for terminating null character
for( ; i != i_end ; ++i, ++len)
{
if( len < max_buf_len )
{
str[len] = *i;
}
else
{
converted_correctly = false;
break;
}
}
str[len] = 0;
}
else
{
converted_correctly = utf8_to_wide(*this, str, max_buf_len);
}
}
return converted_correctly;
}
template<typename char_type, size_t stack_size, size_t heap_block_size>
char TextStreamBase<char_type, stack_size, heap_block_size>::get_char(size_t index) const
{