mirror of
https://github.com/reactos/reactos.git
synced 2024-08-26 05:08:39 +00:00
466 lines
14 KiB
C
466 lines
14 KiB
C
/*
|
|
* Copyright (c) 1999
|
|
* Silicon Graphics Computer Systems, Inc.
|
|
*
|
|
* Copyright (c) 1999
|
|
* Boris Fomitchev
|
|
*
|
|
* This material is provided "as is", with absolutely no warranty expressed
|
|
* or implied. Any use is at your own risk.
|
|
*
|
|
* Permission to use or copy this software for any purpose is hereby granted
|
|
* without fee, provided the above notices are retained on all copies.
|
|
* Permission to modify the code and to distribute modified code is granted,
|
|
* provided the above notices are retained, and a notice that the code was
|
|
* modified is included with the above copyright notice.
|
|
*
|
|
*/
|
|
|
|
#ifndef _STLP_SSTREAM_C
|
|
#define _STLP_SSTREAM_C
|
|
|
|
#ifndef _STLP_INTERNAL_SSTREAM
|
|
# include <stl/_sstream.h>
|
|
#endif
|
|
|
|
#if defined ( _STLP_NESTED_TYPE_PARAM_BUG )
|
|
// no wint_t is supported for this mode
|
|
# define __BSB_int_type__ int
|
|
# define __BSB_pos_type__ streampos
|
|
#else
|
|
# define __BSB_int_type__ _STLP_TYPENAME_ON_RETURN_TYPE basic_stringbuf<_CharT, _Traits, _Alloc>::int_type
|
|
# define __BSB_pos_type__ _STLP_TYPENAME_ON_RETURN_TYPE basic_stringbuf<_CharT, _Traits, _Alloc>::pos_type
|
|
#endif
|
|
|
|
_STLP_BEGIN_NAMESPACE
|
|
|
|
//----------------------------------------------------------------------
|
|
// Non-inline stringbuf member functions.
|
|
|
|
// Constructors. Note that the base class constructor sets all of the
|
|
// get and area pointers to null.
|
|
|
|
template <class _CharT, class _Traits, class _Alloc>
|
|
basic_stringbuf<_CharT, _Traits, _Alloc>
|
|
::basic_stringbuf(ios_base::openmode __mode)
|
|
: basic_streambuf<_CharT, _Traits>(), _M_mode(__mode), _M_str()
|
|
{}
|
|
|
|
template <class _CharT, class _Traits, class _Alloc>
|
|
basic_stringbuf<_CharT, _Traits, _Alloc>
|
|
::basic_stringbuf(const basic_string<_CharT, _Traits, _Alloc>& __s, ios_base::openmode __mode)
|
|
: basic_streambuf<_CharT, _Traits>(), _M_mode(__mode), _M_str(__s)
|
|
{
|
|
_M_set_ptrs();
|
|
}
|
|
|
|
template <class _CharT, class _Traits, class _Alloc>
|
|
basic_stringbuf<_CharT, _Traits, _Alloc>::~basic_stringbuf()
|
|
{}
|
|
|
|
// Set the underlying string to a new value.
|
|
template <class _CharT, class _Traits, class _Alloc>
|
|
void
|
|
basic_stringbuf<_CharT, _Traits, _Alloc>::str(const basic_string<_CharT, _Traits, _Alloc>& __s)
|
|
{
|
|
_M_str = __s;
|
|
_M_set_ptrs();
|
|
}
|
|
|
|
template <class _CharT, class _Traits, class _Alloc>
|
|
void
|
|
basic_stringbuf<_CharT, _Traits, _Alloc>::_M_set_ptrs()
|
|
{
|
|
_CharT* __data_ptr = _S_start(_M_str);
|
|
_CharT* __data_end = _S_finish(_M_str);
|
|
// The initial read position is the beginning of the string.
|
|
if (_M_mode & ios_base::in) {
|
|
this->setg(__data_ptr, (_M_mode & ios_base::ate) ? __data_end : __data_ptr, __data_end);
|
|
}
|
|
|
|
// The initial write position is the beginning of the string.
|
|
if (_M_mode & ios_base::out) {
|
|
if ( _M_mode & (ios_base::app | ios_base::ate) ) {
|
|
this->setp( __data_end, __data_end );
|
|
} else {
|
|
this->setp( __data_ptr, __data_end );
|
|
this->pbump((int)_M_str.size()); // initial write position, if we initialized with string
|
|
}
|
|
// this->setp((_M_mode & (ios_base::app | ios_base::ate))? __data_end : __data_ptr, __data_end);
|
|
}
|
|
}
|
|
|
|
// Precondition: gptr() >= egptr(). Returns a character, if one is available.
|
|
template <class _CharT, class _Traits, class _Alloc>
|
|
__BSB_int_type__
|
|
basic_stringbuf<_CharT, _Traits, _Alloc>::underflow() {
|
|
return this->gptr() != this->egptr()
|
|
? _Traits::to_int_type(*this->gptr())
|
|
: _Traits::eof();
|
|
}
|
|
|
|
// Precondition: gptr() >= egptr().
|
|
template <class _CharT, class _Traits, class _Alloc>
|
|
__BSB_int_type__
|
|
basic_stringbuf<_CharT, _Traits, _Alloc>::uflow() {
|
|
if (this->gptr() != this->egptr()) {
|
|
int_type __c = _Traits::to_int_type(*this->gptr());
|
|
this->gbump(1);
|
|
return __c;
|
|
}
|
|
else
|
|
return _Traits::eof();
|
|
}
|
|
|
|
template <class _CharT, class _Traits, class _Alloc>
|
|
__BSB_int_type__
|
|
basic_stringbuf<_CharT, _Traits, _Alloc>::pbackfail(int_type __c) {
|
|
if (this->gptr() != this->eback()) {
|
|
if (!_Traits::eq_int_type(__c, _Traits::eof())) {
|
|
if (_Traits::eq(_Traits::to_char_type(__c), this->gptr()[-1])) {
|
|
this->gbump(-1);
|
|
return __c;
|
|
}
|
|
else if (_M_mode & ios_base::out) {
|
|
this->gbump(-1);
|
|
*this->gptr() = _Traits::to_char_type(__c);
|
|
return __c;
|
|
}
|
|
else
|
|
return _Traits::eof();
|
|
}
|
|
else {
|
|
this->gbump(-1);
|
|
return _Traits::not_eof(__c);
|
|
}
|
|
}
|
|
else
|
|
return _Traits::eof();
|
|
}
|
|
|
|
template <class _CharT, class _Traits, class _Alloc>
|
|
__BSB_int_type__ basic_stringbuf<_CharT, _Traits, _Alloc>::overflow(int_type __c)
|
|
{
|
|
if (!_Traits::eq_int_type(__c, _Traits::eof())) {
|
|
if (_M_mode & ios_base::out) {
|
|
if ( this->pptr() < this->epptr() ) { // just put back in any case
|
|
_M_str.push_back( _Traits::to_char_type(__c) );
|
|
this->pbump(1);
|
|
} else if ( _M_mode & ios_base::in ) {
|
|
ptrdiff_t __offset = this->gptr() - this->eback();
|
|
_M_str.push_back(_Traits::to_char_type(__c));
|
|
_CharT* __data_ptr = _S_start(_M_str);
|
|
this->setg(__data_ptr, __data_ptr + __offset, _S_finish(_M_str));
|
|
this->setp(__data_ptr, _S_finish(_M_str));
|
|
this->pbump((int)_M_str.size());
|
|
} else {
|
|
_M_str.push_back( _Traits::to_char_type(__c) );
|
|
this->setp(_S_start(_M_str), _S_finish(_M_str));
|
|
this->pbump((int)_M_str.size());
|
|
}
|
|
return __c;
|
|
}
|
|
return _Traits::eof(); // Overflow always fails if it's read-only
|
|
}
|
|
return _Traits::not_eof(__c); // __c is EOF, so we don't have to do anything
|
|
}
|
|
|
|
template <class _CharT, class _Traits, class _Alloc>
|
|
streamsize
|
|
basic_stringbuf<_CharT, _Traits, _Alloc>::xsputn(const char_type* __s,
|
|
streamsize __n) {
|
|
streamsize __nwritten = 0;
|
|
|
|
if ((_M_mode & ios_base::out) && __n > 0) {
|
|
// If the put pointer is somewhere in the middle of the string,
|
|
// then overwrite instead of append.
|
|
if ( !_M_str.empty() && this->pbase() == _S_start(_M_str)) {
|
|
ptrdiff_t __avail = _S_finish(_M_str) - this->pptr();
|
|
if (__avail > __n) {
|
|
_Traits::copy(this->pptr(), __s, __STATIC_CAST(size_t, __n));
|
|
this->pbump((int)__n);
|
|
return __n;
|
|
} else {
|
|
_Traits::copy(this->pptr(), __s, __avail);
|
|
__nwritten += __avail;
|
|
__n -= __avail;
|
|
__s += __avail;
|
|
}
|
|
}
|
|
|
|
// At this point we know we're appending.
|
|
_CharT* __data_ptr;
|
|
if (_M_mode & ios_base::in) {
|
|
ptrdiff_t __get_offset = this->gptr() - this->eback();
|
|
_M_str.append(__s, __s + __STATIC_CAST(ptrdiff_t, __n));
|
|
__data_ptr = _S_start(_M_str);
|
|
this->setg(__data_ptr, __data_ptr + __get_offset, _S_finish(_M_str));
|
|
} else {
|
|
_M_str.append(__s, __s + __STATIC_CAST(ptrdiff_t, __n));
|
|
__data_ptr = _S_start(_M_str);
|
|
}
|
|
|
|
this->setp(__data_ptr, _S_finish(_M_str));
|
|
this->pbump((int)_M_str.size());
|
|
__nwritten += __n;
|
|
}
|
|
|
|
return __nwritten;
|
|
}
|
|
|
|
template <class _CharT, class _Traits, class _Alloc>
|
|
streamsize
|
|
basic_stringbuf<_CharT, _Traits, _Alloc>::_M_xsputnc(char_type __c,
|
|
streamsize __n) {
|
|
streamsize __nwritten = 0;
|
|
|
|
if ((_M_mode & ios_base::out) && __n > 0) {
|
|
// If the put pointer is somewhere in the middle of the string,
|
|
// then overwrite instead of append.
|
|
if (this->pbase() == _S_start(_M_str)) {
|
|
ptrdiff_t __avail = _S_finish(_M_str) - this->pptr();
|
|
if (__avail > __n) {
|
|
_Traits::assign(this->pptr(), __STATIC_CAST(size_t, __n), __c);
|
|
this->pbump(__STATIC_CAST(int, __n));
|
|
return __n;
|
|
}
|
|
else {
|
|
_Traits::assign(this->pptr(), __avail, __c);
|
|
__nwritten += __avail;
|
|
__n -= __avail;
|
|
}
|
|
}
|
|
|
|
// At this point we know we're appending.
|
|
size_t __app_size = sizeof(streamsize) > sizeof(size_t) ? __STATIC_CAST(size_t, (min)(__n, __STATIC_CAST(streamsize, _M_str.max_size())))
|
|
: __STATIC_CAST(size_t, __n);
|
|
_CharT* __data_ptr;
|
|
if (this->_M_mode & ios_base::in) {
|
|
ptrdiff_t __get_offset = this->gptr() - this->eback();
|
|
_M_str.append(__app_size, __c);
|
|
__data_ptr = _S_start(_M_str);
|
|
this->setg(__data_ptr, __data_ptr + __get_offset, _S_finish(_M_str));
|
|
} else {
|
|
_M_str.append(__app_size, __c);
|
|
__data_ptr = _S_start(_M_str);
|
|
}
|
|
|
|
this->setp(__data_ptr, _S_finish(_M_str));
|
|
this->pbump((int)_M_str.size());
|
|
__nwritten += __app_size;
|
|
}
|
|
|
|
return __nwritten;
|
|
}
|
|
|
|
// According to the C++ standard the effects of setbuf are implementation
|
|
// defined, except that setbuf(0, 0) has no effect. In this implementation,
|
|
// setbuf(<anything>, n), for n > 0, calls reserve(n) on the underlying
|
|
// string.
|
|
template <class _CharT, class _Traits, class _Alloc>
|
|
basic_streambuf<_CharT, _Traits>*
|
|
basic_stringbuf<_CharT, _Traits, _Alloc>::setbuf(_CharT*, streamsize __n) {
|
|
if (__n > 0) {
|
|
bool __do_get_area = false;
|
|
bool __do_put_area = false;
|
|
ptrdiff_t __offg = 0;
|
|
ptrdiff_t __offp = 0;
|
|
|
|
if (this->pbase() == _S_start(_M_str)) {
|
|
__do_put_area = true;
|
|
__offp = this->pptr() - this->pbase();
|
|
}
|
|
|
|
if (this->eback() == _S_start(_M_str)) {
|
|
__do_get_area = true;
|
|
__offg = this->gptr() - this->eback();
|
|
}
|
|
|
|
_M_str.reserve(sizeof(streamsize) > sizeof(size_t) ? __STATIC_CAST(size_t, (min)(__n, __STATIC_CAST(streamsize, _M_str.max_size())))
|
|
: __STATIC_CAST(size_t, __n));
|
|
|
|
_CharT* __data_ptr = _S_start(_M_str);
|
|
|
|
if (__do_get_area) {
|
|
this->setg(__data_ptr, __data_ptr + __offg, _S_finish(_M_str));
|
|
}
|
|
|
|
if (__do_put_area) {
|
|
this->setp(__data_ptr, _S_finish(_M_str));
|
|
this->pbump((int)__offp);
|
|
}
|
|
}
|
|
|
|
return this;
|
|
}
|
|
|
|
template <class _CharT, class _Traits, class _Alloc>
|
|
__BSB_pos_type__
|
|
basic_stringbuf<_CharT, _Traits, _Alloc>
|
|
::seekoff(off_type __off,
|
|
ios_base::seekdir __dir,
|
|
ios_base::openmode __mode) {
|
|
__mode &= _M_mode;
|
|
|
|
bool __imode = (__mode & ios_base::in) != 0;
|
|
bool __omode = (__mode & ios_base::out) != 0;
|
|
|
|
if ( !(__imode || __omode) )
|
|
return pos_type(off_type(-1));
|
|
|
|
if ( (__imode && (this->gptr() == 0)) || (__omode && (this->pptr() == 0)) )
|
|
return pos_type(off_type(-1));
|
|
|
|
streamoff __newoff;
|
|
switch(__dir) {
|
|
case ios_base::beg:
|
|
__newoff = 0;
|
|
break;
|
|
case ios_base::end:
|
|
__newoff = _M_str.size();
|
|
break;
|
|
case ios_base::cur:
|
|
__newoff = __imode ? this->gptr() - this->eback() : this->pptr() - this->pbase();
|
|
if ( __off == 0 ) {
|
|
return pos_type(__newoff);
|
|
}
|
|
break;
|
|
default:
|
|
return pos_type(off_type(-1));
|
|
}
|
|
|
|
__off += __newoff;
|
|
|
|
if (__imode) {
|
|
ptrdiff_t __n = this->egptr() - this->eback();
|
|
|
|
if (__off < 0 || __off > __n)
|
|
return pos_type(off_type(-1));
|
|
this->setg(this->eback(), this->eback() + __STATIC_CAST(ptrdiff_t, __off),
|
|
this->eback() + __STATIC_CAST(ptrdiff_t, __n));
|
|
}
|
|
|
|
if (__omode) {
|
|
ptrdiff_t __n = this->epptr() - this->pbase();
|
|
|
|
if (__off < 0 || __off > __n)
|
|
return pos_type(off_type(-1));
|
|
this->setp(this->pbase(), this->pbase() + __n);
|
|
this->pbump((int)__off);
|
|
}
|
|
|
|
return pos_type(__off);
|
|
}
|
|
|
|
template <class _CharT, class _Traits, class _Alloc>
|
|
__BSB_pos_type__
|
|
basic_stringbuf<_CharT, _Traits, _Alloc>
|
|
::seekpos(pos_type __pos, ios_base::openmode __mode) {
|
|
__mode &= _M_mode;
|
|
|
|
bool __imode = (__mode & ios_base::in) != 0;
|
|
bool __omode = (__mode & ios_base::out) != 0;
|
|
|
|
if ( !(__imode || __omode) )
|
|
return pos_type(off_type(-1));
|
|
|
|
if ( (__imode && (this->gptr() == 0)) || (__omode && (this->pptr() == 0)) )
|
|
return pos_type(off_type(-1));
|
|
|
|
const off_type __n = __pos - pos_type(off_type(0));
|
|
|
|
if (__imode) {
|
|
if (__n < 0 || __n > this->egptr() - this->eback())
|
|
return pos_type(off_type(-1));
|
|
this->setg(this->eback(), this->eback() + __STATIC_CAST(ptrdiff_t, __n), this->egptr());
|
|
}
|
|
|
|
if (__omode) {
|
|
if (__n < 0 || size_t(__n) > _M_str.size())
|
|
return pos_type(off_type(-1));
|
|
|
|
this->setp(_S_start(_M_str), _S_finish(_M_str));
|
|
this->pbump((int)__n);
|
|
}
|
|
|
|
return __pos;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
// Non-inline istringstream member functions.
|
|
|
|
template <class _CharT, class _Traits, class _Alloc>
|
|
basic_istringstream<_CharT, _Traits, _Alloc>
|
|
::basic_istringstream(ios_base::openmode __mode)
|
|
: basic_istream<_CharT, _Traits>(0),
|
|
_M_buf(__mode | ios_base::in) {
|
|
this->init(&_M_buf);
|
|
}
|
|
|
|
template <class _CharT, class _Traits, class _Alloc>
|
|
basic_istringstream<_CharT, _Traits, _Alloc>
|
|
::basic_istringstream(const _String& __str,ios_base::openmode __mode)
|
|
: basic_istream<_CharT, _Traits>(0),
|
|
_M_buf(__str, __mode | ios_base::in) {
|
|
this->init(&_M_buf);
|
|
}
|
|
|
|
template <class _CharT, class _Traits, class _Alloc>
|
|
basic_istringstream<_CharT, _Traits, _Alloc>::~basic_istringstream()
|
|
{}
|
|
|
|
//----------------------------------------------------------------------
|
|
// Non-inline ostringstream member functions.
|
|
|
|
template <class _CharT, class _Traits, class _Alloc>
|
|
basic_ostringstream<_CharT, _Traits, _Alloc>
|
|
::basic_ostringstream(ios_base::openmode __mode)
|
|
: basic_ostream<_CharT, _Traits>(0),
|
|
_M_buf(__mode | ios_base::out) {
|
|
this->init(&_M_buf);
|
|
}
|
|
|
|
template <class _CharT, class _Traits, class _Alloc>
|
|
basic_ostringstream<_CharT, _Traits, _Alloc>
|
|
::basic_ostringstream(const _String& __str, ios_base::openmode __mode)
|
|
: basic_ostream<_CharT, _Traits>(0),
|
|
_M_buf(__str, __mode | ios_base::out) {
|
|
this->init(&_M_buf);
|
|
}
|
|
|
|
template <class _CharT, class _Traits, class _Alloc>
|
|
basic_ostringstream<_CharT, _Traits, _Alloc>::~basic_ostringstream()
|
|
{}
|
|
|
|
//----------------------------------------------------------------------
|
|
// Non-inline stringstream member functions.
|
|
|
|
template <class _CharT, class _Traits, class _Alloc>
|
|
basic_stringstream<_CharT, _Traits, _Alloc>
|
|
::basic_stringstream(ios_base::openmode __mode)
|
|
: basic_iostream<_CharT, _Traits>(0), _M_buf(__mode) {
|
|
this->init(&_M_buf);
|
|
}
|
|
|
|
template <class _CharT, class _Traits, class _Alloc>
|
|
basic_stringstream<_CharT, _Traits, _Alloc>
|
|
::basic_stringstream(const _String& __str, ios_base::openmode __mode)
|
|
: basic_iostream<_CharT, _Traits>(0), _M_buf(__str, __mode) {
|
|
this->init(&_M_buf);
|
|
}
|
|
|
|
template <class _CharT, class _Traits, class _Alloc>
|
|
basic_stringstream<_CharT, _Traits, _Alloc>::~basic_stringstream()
|
|
{}
|
|
|
|
_STLP_END_NAMESPACE
|
|
|
|
# undef __BSB_int_type__
|
|
# undef __BSB_pos_type__
|
|
|
|
#endif /* _STLP_SSTREAM_C */
|
|
|
|
// Local Variables:
|
|
// mode:C++
|
|
// End:
|