ReactOS  0.4.13-dev-99-g7e18b6d
_sstream.c
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1 /*
2  * Copyright (c) 1999
3  * Silicon Graphics Computer Systems, Inc.
4  *
5  * Copyright (c) 1999
6  * Boris Fomitchev
7  *
8  * This material is provided "as is", with absolutely no warranty expressed
9  * or implied. Any use is at your own risk.
10  *
11  * Permission to use or copy this software for any purpose is hereby granted
12  * without fee, provided the above notices are retained on all copies.
13  * Permission to modify the code and to distribute modified code is granted,
14  * provided the above notices are retained, and a notice that the code was
15  * modified is included with the above copyright notice.
16  *
17  */
18 
19 #ifndef _STLP_SSTREAM_C
20 #define _STLP_SSTREAM_C
21 
22 #ifndef _STLP_INTERNAL_SSTREAM
23 # include <stl/_sstream.h>
24 #endif
25 
26 #if defined ( _STLP_NESTED_TYPE_PARAM_BUG )
27 // no wint_t is supported for this mode
28 # define __BSB_int_type__ int
29 # define __BSB_pos_type__ streampos
30 #else
31 # define __BSB_int_type__ _STLP_TYPENAME_ON_RETURN_TYPE basic_stringbuf<_CharT, _Traits, _Alloc>::int_type
32 # define __BSB_pos_type__ _STLP_TYPENAME_ON_RETURN_TYPE basic_stringbuf<_CharT, _Traits, _Alloc>::pos_type
33 #endif
34 
36 
37 //----------------------------------------------------------------------
38 // Non-inline stringbuf member functions.
39 
40 // Constructors. Note that the base class constructor sets all of the
41 // get and area pointers to null.
42 
43 template <class _CharT, class _Traits, class _Alloc>
46  : basic_streambuf<_CharT, _Traits>(), _M_mode(__mode), _M_str()
47 {}
48 
49 template <class _CharT, class _Traits, class _Alloc>
52  : basic_streambuf<_CharT, _Traits>(), _M_mode(__mode), _M_str(__s)
53 {
54  _M_set_ptrs();
55 }
56 
57 template <class _CharT, class _Traits, class _Alloc>
59 {}
60 
61 // Set the underlying string to a new value.
62 template <class _CharT, class _Traits, class _Alloc>
63 void
65 {
66  _M_str = __s;
67  _M_set_ptrs();
68 }
69 
70 template <class _CharT, class _Traits, class _Alloc>
71 void
73 {
74  _CharT* __data_ptr = _S_start(_M_str);
75  _CharT* __data_end = _S_finish(_M_str);
76  // The initial read position is the beginning of the string.
77  if (_M_mode & ios_base::in) {
78  this->setg(__data_ptr, (_M_mode & ios_base::ate) ? __data_end : __data_ptr, __data_end);
79  }
80 
81  // The initial write position is the beginning of the string.
82  if (_M_mode & ios_base::out) {
83  if ( _M_mode & (ios_base::app | ios_base::ate) ) {
84  this->setp( __data_end, __data_end );
85  } else {
86  this->setp( __data_ptr, __data_end );
87  this->pbump((int)_M_str.size()); // initial write position, if we initialized with string
88  }
89  // this->setp((_M_mode & (ios_base::app | ios_base::ate))? __data_end : __data_ptr, __data_end);
90  }
91 }
92 
93 // Precondition: gptr() >= egptr(). Returns a character, if one is available.
94 template <class _CharT, class _Traits, class _Alloc>
97  return this->gptr() != this->egptr()
98  ? _Traits::to_int_type(*this->gptr())
99  : _Traits::eof();
100 }
101 
102 // Precondition: gptr() >= egptr().
103 template <class _CharT, class _Traits, class _Alloc>
106  if (this->gptr() != this->egptr()) {
107  int_type __c = _Traits::to_int_type(*this->gptr());
108  this->gbump(1);
109  return __c;
110  }
111  else
112  return _Traits::eof();
113 }
114 
115 template <class _CharT, class _Traits, class _Alloc>
118  if (this->gptr() != this->eback()) {
119  if (!_Traits::eq_int_type(__c, _Traits::eof())) {
120  if (_Traits::eq(_Traits::to_char_type(__c), this->gptr()[-1])) {
121  this->gbump(-1);
122  return __c;
123  }
124  else if (_M_mode & ios_base::out) {
125  this->gbump(-1);
126  *this->gptr() = _Traits::to_char_type(__c);
127  return __c;
128  }
129  else
130  return _Traits::eof();
131  }
132  else {
133  this->gbump(-1);
134  return _Traits::not_eof(__c);
135  }
136  }
137  else
138  return _Traits::eof();
139 }
140 
141 template <class _CharT, class _Traits, class _Alloc>
143 {
144  if (!_Traits::eq_int_type(__c, _Traits::eof())) {
145  if (_M_mode & ios_base::out) {
146  if ( this->pptr() < this->epptr() ) { // just put back in any case
147  _M_str.push_back( _Traits::to_char_type(__c) );
148  this->pbump(1);
149  } else if ( _M_mode & ios_base::in ) {
150  ptrdiff_t __offset = this->gptr() - this->eback();
151  _M_str.push_back(_Traits::to_char_type(__c));
152  _CharT* __data_ptr = _S_start(_M_str);
153  this->setg(__data_ptr, __data_ptr + __offset, _S_finish(_M_str));
154  this->setp(__data_ptr, _S_finish(_M_str));
155  this->pbump((int)_M_str.size());
156  } else {
157  _M_str.push_back( _Traits::to_char_type(__c) );
158  this->setp(_S_start(_M_str), _S_finish(_M_str));
159  this->pbump((int)_M_str.size());
160  }
161  return __c;
162  }
163  return _Traits::eof(); // Overflow always fails if it's read-only
164  }
165  return _Traits::not_eof(__c); // __c is EOF, so we don't have to do anything
166 }
167 
168 template <class _CharT, class _Traits, class _Alloc>
171  streamsize __n) {
172  streamsize __nwritten = 0;
173 
174  if ((_M_mode & ios_base::out) && __n > 0) {
175  // If the put pointer is somewhere in the middle of the string,
176  // then overwrite instead of append.
177  if ( !_M_str.empty() && this->pbase() == _S_start(_M_str)) {
178  ptrdiff_t __avail = _S_finish(_M_str) - this->pptr();
179  if (__avail > __n) {
180  _Traits::copy(this->pptr(), __s, __STATIC_CAST(size_t, __n));
181  this->pbump((int)__n);
182  return __n;
183  } else {
184  _Traits::copy(this->pptr(), __s, __avail);
185  __nwritten += __avail;
186  __n -= __avail;
187  __s += __avail;
188  }
189  }
190 
191  // At this point we know we're appending.
192  _CharT* __data_ptr;
193  if (_M_mode & ios_base::in) {
194  ptrdiff_t __get_offset = this->gptr() - this->eback();
195  _M_str.append(__s, __s + __STATIC_CAST(ptrdiff_t, __n));
196  __data_ptr = _S_start(_M_str);
197  this->setg(__data_ptr, __data_ptr + __get_offset, _S_finish(_M_str));
198  } else {
199  _M_str.append(__s, __s + __STATIC_CAST(ptrdiff_t, __n));
200  __data_ptr = _S_start(_M_str);
201  }
202 
203  this->setp(__data_ptr, _S_finish(_M_str));
204  this->pbump((int)_M_str.size());
205  __nwritten += __n;
206  }
207 
208  return __nwritten;
209 }
210 
211 template <class _CharT, class _Traits, class _Alloc>
214  streamsize __n) {
215  streamsize __nwritten = 0;
216 
217  if ((_M_mode & ios_base::out) && __n > 0) {
218  // If the put pointer is somewhere in the middle of the string,
219  // then overwrite instead of append.
220  if (this->pbase() == _S_start(_M_str)) {
221  ptrdiff_t __avail = _S_finish(_M_str) - this->pptr();
222  if (__avail > __n) {
223  _Traits::assign(this->pptr(), __STATIC_CAST(size_t, __n), __c);
224  this->pbump(__STATIC_CAST(int, __n));
225  return __n;
226  }
227  else {
228  _Traits::assign(this->pptr(), __avail, __c);
229  __nwritten += __avail;
230  __n -= __avail;
231  }
232  }
233 
234  // At this point we know we're appending.
235  size_t __app_size = sizeof(streamsize) > sizeof(size_t) ? __STATIC_CAST(size_t, (min)(__n, __STATIC_CAST(streamsize, _M_str.max_size())))
236  : __STATIC_CAST(size_t, __n);
237  _CharT* __data_ptr;
238  if (this->_M_mode & ios_base::in) {
239  ptrdiff_t __get_offset = this->gptr() - this->eback();
240  _M_str.append(__app_size, __c);
241  __data_ptr = _S_start(_M_str);
242  this->setg(__data_ptr, __data_ptr + __get_offset, _S_finish(_M_str));
243  } else {
244  _M_str.append(__app_size, __c);
245  __data_ptr = _S_start(_M_str);
246  }
247 
248  this->setp(__data_ptr, _S_finish(_M_str));
249  this->pbump((int)_M_str.size());
250  __nwritten += __app_size;
251  }
252 
253  return __nwritten;
254 }
255 
256 // According to the C++ standard the effects of setbuf are implementation
257 // defined, except that setbuf(0, 0) has no effect. In this implementation,
258 // setbuf(<anything>, n), for n > 0, calls reserve(n) on the underlying
259 // string.
260 template <class _CharT, class _Traits, class _Alloc>
263  if (__n > 0) {
264  bool __do_get_area = false;
265  bool __do_put_area = false;
266  ptrdiff_t __offg = 0;
267  ptrdiff_t __offp = 0;
268 
269  if (this->pbase() == _S_start(_M_str)) {
270  __do_put_area = true;
271  __offp = this->pptr() - this->pbase();
272  }
273 
274  if (this->eback() == _S_start(_M_str)) {
275  __do_get_area = true;
276  __offg = this->gptr() - this->eback();
277  }
278 
279  _M_str.reserve(sizeof(streamsize) > sizeof(size_t) ? __STATIC_CAST(size_t, (min)(__n, __STATIC_CAST(streamsize, _M_str.max_size())))
280  : __STATIC_CAST(size_t, __n));
281 
282  _CharT* __data_ptr = _S_start(_M_str);
283 
284  if (__do_get_area) {
285  this->setg(__data_ptr, __data_ptr + __offg, _S_finish(_M_str));
286  }
287 
288  if (__do_put_area) {
289  this->setp(__data_ptr, _S_finish(_M_str));
290  this->pbump((int)__offp);
291  }
292  }
293 
294  return this;
295 }
296 
297 template <class _CharT, class _Traits, class _Alloc>
301  ios_base::seekdir __dir,
302  ios_base::openmode __mode) {
303  __mode &= _M_mode;
304 
305  bool __imode = (__mode & ios_base::in) != 0;
306  bool __omode = (__mode & ios_base::out) != 0;
307 
308  if ( !(__imode || __omode) )
309  return pos_type(off_type(-1));
310 
311  if ( (__imode && (this->gptr() == 0)) || (__omode && (this->pptr() == 0)) )
312  return pos_type(off_type(-1));
313 
314  streamoff __newoff;
315  switch(__dir) {
316  case ios_base::beg:
317  __newoff = 0;
318  break;
319  case ios_base::end:
320  __newoff = _M_str.size();
321  break;
322  case ios_base::cur:
323  __newoff = __imode ? this->gptr() - this->eback() : this->pptr() - this->pbase();
324  if ( __off == 0 ) {
325  return pos_type(__newoff);
326  }
327  break;
328  default:
329  return pos_type(off_type(-1));
330  }
331 
332  __off += __newoff;
333 
334  if (__imode) {
335  ptrdiff_t __n = this->egptr() - this->eback();
336 
337  if (__off < 0 || __off > __n)
338  return pos_type(off_type(-1));
339  this->setg(this->eback(), this->eback() + __STATIC_CAST(ptrdiff_t, __off),
340  this->eback() + __STATIC_CAST(ptrdiff_t, __n));
341  }
342 
343  if (__omode) {
344  ptrdiff_t __n = this->epptr() - this->pbase();
345 
346  if (__off < 0 || __off > __n)
347  return pos_type(off_type(-1));
348  this->setp(this->pbase(), this->pbase() + __n);
349  this->pbump((int)__off);
350  }
351 
352  return pos_type(__off);
353 }
354 
355 template <class _CharT, class _Traits, class _Alloc>
359  __mode &= _M_mode;
360 
361  bool __imode = (__mode & ios_base::in) != 0;
362  bool __omode = (__mode & ios_base::out) != 0;
363 
364  if ( !(__imode || __omode) )
365  return pos_type(off_type(-1));
366 
367  if ( (__imode && (this->gptr() == 0)) || (__omode && (this->pptr() == 0)) )
368  return pos_type(off_type(-1));
369 
370  const off_type __n = __pos - pos_type(off_type(0));
371 
372  if (__imode) {
373  if (__n < 0 || __n > this->egptr() - this->eback())
374  return pos_type(off_type(-1));
375  this->setg(this->eback(), this->eback() + __STATIC_CAST(ptrdiff_t, __n), this->egptr());
376  }
377 
378  if (__omode) {
379  if (__n < 0 || size_t(__n) > _M_str.size())
380  return pos_type(off_type(-1));
381 
382  this->setp(_S_start(_M_str), _S_finish(_M_str));
383  this->pbump((int)__n);
384  }
385 
386  return __pos;
387 }
388 
389 //----------------------------------------------------------------------
390 // Non-inline istringstream member functions.
391 
392 template <class _CharT, class _Traits, class _Alloc>
395  : basic_istream<_CharT, _Traits>(0),
396  _M_buf(__mode | ios_base::in) {
397  this->init(&_M_buf);
398 }
399 
400 template <class _CharT, class _Traits, class _Alloc>
403  : basic_istream<_CharT, _Traits>(0),
404  _M_buf(__str, __mode | ios_base::in) {
405  this->init(&_M_buf);
406 }
407 
408 template <class _CharT, class _Traits, class _Alloc>
410 {}
411 
412 //----------------------------------------------------------------------
413 // Non-inline ostringstream member functions.
414 
415 template <class _CharT, class _Traits, class _Alloc>
418  : basic_ostream<_CharT, _Traits>(0),
419  _M_buf(__mode | ios_base::out) {
420  this->init(&_M_buf);
421 }
422 
423 template <class _CharT, class _Traits, class _Alloc>
426  : basic_ostream<_CharT, _Traits>(0),
427  _M_buf(__str, __mode | ios_base::out) {
428  this->init(&_M_buf);
429 }
430 
431 template <class _CharT, class _Traits, class _Alloc>
433 {}
434 
435 //----------------------------------------------------------------------
436 // Non-inline stringstream member functions.
437 
438 template <class _CharT, class _Traits, class _Alloc>
441  : basic_iostream<_CharT, _Traits>(0), _M_buf(__mode) {
442  this->init(&_M_buf);
443 }
444 
445 template <class _CharT, class _Traits, class _Alloc>
448  : basic_iostream<_CharT, _Traits>(0), _M_buf(__str, __mode) {
449  this->init(&_M_buf);
450 }
451 
452 template <class _CharT, class _Traits, class _Alloc>
454 {}
455 
457 
458 # undef __BSB_int_type__
459 # undef __BSB_pos_type__
460 
461 #endif /* _STLP_SSTREAM_C */
462 
463 // Local Variables:
464 // mode:C++
465 // End:
_CharT char_type
Definition: _sstream.h:57
off_t streamoff
Definition: char_traits.h:74
return __n
Definition: _algo.h:75
virtual streamsize xsputn(const char_type *__s, streamsize __n)
Definition: _sstream.c:170
#define __STATIC_CAST(__x, __y)
Definition: features.h:585
GLuint GLuint end
Definition: gl.h:1545
virtual pos_type seekoff(off_type __off, ios_base::seekdir __dir, ios_base::openmode __mode=ios_base::in|ios_base::out)
Definition: _sstream.c:300
virtual _Base * setbuf(_CharT *__buf, streamsize __n)
Definition: _sstream.c:262
#define eq(received, expected, label, type)
Definition: locale.c:144
static int init
Definition: wintirpc.c:33
int seekdir
Definition: _ios_base.h:60
#define __c
Definition: schilyio.h:209
virtual int_type underflow()
Definition: _sstream.c:96
virtual ~basic_stringbuf()
Definition: _sstream.c:58
_Traits::off_type off_type
Definition: _sstream.h:60
#define __BSB_int_type__
Definition: _sstream.c:31
int_type pbackfail()
Definition: _sstream.h:83
void _M_set_ptrs()
Definition: _sstream.c:72
int_type overflow()
Definition: _sstream.h:84
int openmode
Definition: _ios_base.h:59
static FILE * out
Definition: regtests2xml.c:44
virtual int_type uflow()
Definition: _sstream.c:105
basic_stringbuf(ios_base::openmode __mode=ios_base::in|ios_base::out)
Definition: _sstream.c:45
basic_stringstream(openmode __mod=ios_base::in|ios_base::out)
Definition: _sstream.c:440
_Traits::pos_type pos_type
Definition: _sstream.h:59
_Traits::int_type int_type
Definition: _sstream.h:58
virtual streamsize _M_xsputnc(char_type __c, streamsize __n)
Definition: _sstream.c:213
basic_ostringstream(ios_base::openmode __mode=ios_base::out)
Definition: _sstream.c:417
_Check_return_ _CRTIMP int __cdecl __cdecl eof(_In_ int _FileHandle)
virtual pos_type seekpos(pos_type __pos, ios_base::openmode __mode=ios_base::in|ios_base::out)
Definition: _sstream.c:358
GLuint in
Definition: glext.h:9616
#define _STLP_END_NAMESPACE
Definition: features.h:503
INT copy(TCHAR source[MAX_PATH], TCHAR dest[MAX_PATH], INT append, DWORD lpdwFlags, BOOL bTouch)
Definition: copy.c:51
#define min(a, b)
Definition: monoChain.cc:55
__kernel_ptrdiff_t ptrdiff_t
Definition: linux.h:247
ptrdiff_t streamsize
Definition: char_traits.h:81
#define __BSB_pos_type__
Definition: _sstream.c:32
#define _STLP_BEGIN_NAMESPACE
Definition: features.h:501
_String str() const
Definition: _sstream.h:75
basic_istringstream(ios_base::openmode __mode=ios_base::in)
Definition: _sstream.c:394