#ifdef __GNUG__
#pragma implementation
#endif
#include "iostreamP.h"
#include "strstream.h"
#include <string.h>
static void* default_alloc(_IO_size_t size)
{
return (void*)new char[size];
}
static void default_free(void* ptr)
{
delete [] (char*)ptr;
}
istrstream::istrstream(const char *cp, int n)
{
__my_sb.init_readonly (cp, n);
}
strstreambase::strstreambase(char *cp, int n, int mode)
: __my_sb (cp, n,
(mode == ios::app || mode == ios::ate) ? cp + strlen(cp) : cp)
{
init (&__my_sb);
}
char *strstreambuf::str()
{
freeze(1);
return base();
}
_IO_ssize_t strstreambuf::pcount () { return _IO_write_ptr - _IO_write_base; }
int strstreambuf::overflow(int c )
{
return _IO_str_overflow (this, c);
}
int strstreambuf::underflow()
{
return _IO_str_underflow(this);
}
void strstreambuf::init_dynamic(_IO_alloc_type alloc, _IO_free_type free,
int initial_size)
{
_s._allocate_buffer = alloc ? alloc : default_alloc;
_s._free_buffer = free ? free : default_free;
if (initial_size > 0)
{
char * buf = (char*)(*_s._allocate_buffer)(initial_size);
setb(buf, buf + initial_size, 1);
setp(buf, buf + initial_size);
setg(buf, buf, buf);
}
}
void strstreambuf::init_static(char *ptr, int size, char *pstart)
{
_IO_str_init_static (this, ptr, size, pstart);
}
void strstreambuf::init_readonly (const char *ptr, int size)
{
_IO_str_init_readonly (this, ptr, size);
}
strstreambuf::~strstreambuf()
{
if (_IO_buf_base && !(_flags & _IO_USER_BUF))
(_s._free_buffer)(_IO_buf_base);
_IO_buf_base = NULL;
}
streampos strstreambuf::seekoff(streamoff off, _seek_dir dir,
int mode )
{
return _IO_str_seekoff (this, off, dir, mode);
}
int strstreambuf::pbackfail(int c)
{
return _IO_str_pbackfail (this, c);
}