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/* Copyright (C) 2004 Garrett A. Kajmowicz
This file is part of the uClibc++ Library.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#if ! defined(__AVR__)
#define __UCLIBCXX_COMPILE_FSTREAM__ 1
#include <fstream>
namespace std{
#ifdef __UCLIBCXX_EXPAND_FSTREAM_CHAR__
#ifdef __UCLIBCXX_EXPAND_CONSTRUCTORS_DESTRUCTORS__
template _UCXXEXPORT filebuf::basic_filebuf();
template _UCXXEXPORT filebuf::~basic_filebuf();
#endif //__UCLIBCXX_EXPAND_CONSTRUCTORS_DESTRUCTORS__
template _UCXXEXPORT filebuf::int_type filebuf::pbackfail(filebuf::int_type c);
template _UCXXEXPORT filebuf * filebuf::open(const char* s, ios_base::openmode mode);
template _UCXXEXPORT filebuf * filebuf::close();
template _UCXXEXPORT filebuf::int_type filebuf::overflow(filebuf::int_type);
template _UCXXEXPORT filebuf::int_type filebuf::underflow ();
template _UCXXEXPORT streamsize filebuf::xsputn(const char* s, streamsize n);
template _UCXXEXPORT basic_streambuf<char, char_traits<char> >*
filebuf::setbuf(char * s, streamsize n);
#ifdef __UCLIBCXX_EXPAND_CONSTRUCTORS_DESTRUCTORS__
template _UCXXEXPORT basic_ofstream<char, char_traits<char> >::basic_ofstream();
template _UCXXEXPORT basic_ofstream<char, char_traits<char> >::basic_ofstream(const char* s, ios_base::openmode mode);
template _UCXXEXPORT basic_ofstream<char, char_traits<char> >::~basic_ofstream();
template _UCXXEXPORT basic_ifstream<char, char_traits<char> >::basic_ifstream();
template _UCXXEXPORT basic_ifstream<char, char_traits<char> >::basic_ifstream(const char* s, ios_base::openmode mode);
template _UCXXEXPORT basic_ifstream<char, char_traits<char> >::~basic_ifstream();
#endif //__UCLIBCXX_EXPAND_CONSTRUCTORS_DESTRUCTORS__
#endif
#ifdef __UCLIBCXX_HAS_WCHAR__
template <> _UCXXEXPORT basic_filebuf<wchar_t, char_traits<wchar_t> >::int_type
basic_filebuf<wchar_t, char_traits<wchar_t> >::overflow(int_type c)
{
typedef basic_streambuf<wchar_t, char_traits<wchar_t> > wstreambuf;
typedef char_traits<wchar_t> wtraits;
if(is_open() == false){
//Can't do much
return wtraits::eof();
}
mbstate_t ps = { 0 };
char out_array[8];
size_t out_size;
if( wstreambuf::pbase() != 0 ){
//Write all possible character from the existing array first
size_t chars_written = 0;
while(wstreambuf::pbase() && (wstreambuf::pbase() + chars_written !=wstreambuf::pptr()) ){
out_size = wcrtomb(out_array, wstreambuf::pbase()[chars_written], &ps);
if(out_size == (size_t)(-1) || fwrite(out_array, out_size, 1, fp) == 0){
break;
}
++chars_written;
}
if( wstreambuf::pbase() + chars_written == wstreambuf::pptr() ){
wstreambuf::pbump(-chars_written);
}else{
//Shuffle data back into order
size_t chars_left = wstreambuf::pptr() - wstreambuf::pbase() - chars_written;
for(size_t i = 0; i < chars_left; ++i){
wstreambuf::pbase()[i] = (wstreambuf::pptr() - chars_written)[i];
}
return wtraits::eof();
}
}
if( !wtraits::eq_int_type(c, wtraits::eof()) ){
out_size = wcrtomb(out_array, c, &ps);
if(out_size == (size_t)(-1) || fwrite(out_array, out_size, 1, fp) == 0){
return wtraits::eof();
}
return c;
}
return wtraits::not_eof(c);
}
template <> _UCXXEXPORT basic_filebuf<wchar_t, char_traits<wchar_t> >::int_type
basic_filebuf<wchar_t, char_traits<wchar_t> >::underflow()
{
/*Some variables used internally:
Buffer pointers:
charT * mgbeg;
charT * mgnext;
charT * mgend;
eback() returns mgbeg
gptr() returns mgnext
egptr() returns mgend
gbump(int n) mgnext+=n
*/
typedef char_traits<wchar_t> traits;
typedef basic_streambuf<wchar_t, traits> wstreambuf;
if(wstreambuf::eback() == wstreambuf::gptr() && 0 != wstreambuf::eback()){ //Buffer is full
return traits::to_int_type(*wstreambuf::gptr());
}
size_t in_size;
wchar_t c = 0;
wint_t wi = 0;
in_size = 0;
wi = fgetwc(fp);
if(WEOF == wi){
fprintf(stderr, "WEOF returned by fgetwc\n");
return traits::eof();
}
c = traits::to_char_type(wi);
if(wstreambuf::eback() == 0){
return traits::to_int_type(c);
}
for(wchar_t * i = wstreambuf::gptr(); i < wstreambuf::egptr(); ++i){
*(i-1) = *i;
}
*(wstreambuf::egptr()-1) = c;
wstreambuf::mgnext -= 1;
return traits::to_int_type(*wstreambuf::gptr());
}
#endif // __UCLIBCXX_HAS_WCHAR__
}
#endif // not ARDUINO