30 #ifndef _STREAMBUF_ITERATOR_H
31 #define _STREAMBUF_ITERATOR_H 1
33 #pragma GCC system_header
38 namespace std _GLIBCXX_VISIBILITY(default)
40 _GLIBCXX_BEGIN_NAMESPACE_VERSION
49 template<
typename _CharT,
typename _Traits>
51 :
public iterator<input_iterator_tag, _CharT, typename _Traits::off_type,
58 #if __cplusplus < 201103L
60 #elif __cplusplus > 201703L
73 template<
typename _CharT2>
74 friend typename __gnu_cxx::__enable_if<__is_char<_CharT2>::__value,
79 template<
bool _IsMove,
typename _CharT2>
80 friend typename __gnu_cxx::__enable_if<__is_char<_CharT2>::__value,
85 template<
typename _CharT2,
typename _Size>
86 friend typename __gnu_cxx::__enable_if<__is_char<_CharT2>::__value,
90 template<
typename _CharT2>
91 friend typename __gnu_cxx::__enable_if<__is_char<_CharT2>::__value,
96 template<
typename _CharT2,
typename _Distance>
97 friend typename __gnu_cxx::__enable_if<__is_char<_CharT2>::__value,
117 #if __cplusplus > 201703L && __cpp_lib_concepts
122 #if __cplusplus >= 201103L
130 : _M_sbuf(__s.rdbuf()), _M_c(traits_type::eof()) { }
134 : _M_sbuf(__s), _M_c(traits_type::eof()) { }
136 #if __cplusplus >= 201103L
150 #ifdef _GLIBCXX_DEBUG_PEDANTIC
153 __glibcxx_requires_cond(!_S_is_eof(__c),
154 _M_message(__gnu_debug::__msg_deref_istreambuf)
155 ._M_iterator(*
this));
157 return traits_type::to_char_type(__c);
164 __glibcxx_requires_cond(_M_sbuf &&
165 (!_S_is_eof(_M_c) || !_S_is_eof(_M_sbuf->
sgetc())),
166 _M_message(__gnu_debug::__msg_inc_istreambuf)
167 ._M_iterator(*
this));
170 _M_c = traits_type::eof();
178 __glibcxx_requires_cond(_M_sbuf &&
179 (!_S_is_eof(_M_c) || !_S_is_eof(_M_sbuf->
sgetc())),
180 _M_message(__gnu_debug::__msg_inc_istreambuf)
181 ._M_iterator(*
this));
184 __old._M_c = _M_sbuf->
sbumpc();
185 _M_c = traits_type::eof();
196 {
return _M_at_eof() == __b._M_at_eof(); }
203 if (_M_sbuf && _S_is_eof(__ret) && _S_is_eof(__ret = _M_sbuf->
sgetc()))
210 {
return _S_is_eof(_M_get()); }
215 const int_type __eof = traits_type::eof();
216 return traits_type::eq_int_type(__c, __eof);
219 #if __cplusplus > 201703L && __cpp_lib_concepts
223 {
return __i._M_at_eof(); }
227 template<
typename _CharT,
typename _Traits>
230 operator==(
const istreambuf_iterator<_CharT, _Traits>& __a,
231 const istreambuf_iterator<_CharT, _Traits>& __b)
232 {
return __a.equal(__b); }
234 #if __cpp_impl_three_way_comparison < 201907L
235 template<
typename _CharT,
typename _Traits>
238 operator!=(
const istreambuf_iterator<_CharT, _Traits>& __a,
239 const istreambuf_iterator<_CharT, _Traits>& __b)
240 {
return !__a.equal(__b); }
244 template<
typename _CharT,
typename _Traits>
246 :
public iterator<output_iterator_tag, void, void, void, void>
252 #if __cplusplus > 201703L
261 template<
typename _CharT2>
262 friend typename __gnu_cxx::__enable_if<__is_char<_CharT2>::__value,
273 #if __cplusplus > 201703L
276 : _M_sbuf(
nullptr), _M_failed(true) { }
281 : _M_sbuf(__s.rdbuf()), _M_failed(!_M_sbuf) { }
285 : _M_sbuf(__s), _M_failed(!_M_sbuf) { }
292 _Traits::eq_int_type(_M_sbuf->
sputc(__c), _Traits::eof()))
317 {
return _M_failed; }
322 if (__builtin_expect(!_M_failed,
true)
323 && __builtin_expect(this->_M_sbuf->
sputn(__ws, __len) != __len,
331 template<
typename _CharT>
332 typename __gnu_cxx::__enable_if<__is_char<_CharT>::__value,
333 ostreambuf_iterator<_CharT> >::__type
334 copy(istreambuf_iterator<_CharT> __first,
335 istreambuf_iterator<_CharT> __last,
336 ostreambuf_iterator<_CharT> __result)
338 if (__first._M_sbuf && !__last._M_sbuf && !__result._M_failed)
341 __copy_streambufs_eof(__first._M_sbuf, __result._M_sbuf, __ineof);
343 __result._M_failed =
true;
348 template<
bool _IsMove,
typename _CharT>
349 typename __gnu_cxx::__enable_if<__is_char<_CharT>::__value,
350 ostreambuf_iterator<_CharT> >::__type
351 __copy_move_a2(_CharT* __first, _CharT* __last,
352 ostreambuf_iterator<_CharT> __result)
356 __result._M_put(__first, __num);
360 template<
bool _IsMove,
typename _CharT>
361 typename __gnu_cxx::__enable_if<__is_char<_CharT>::__value,
362 ostreambuf_iterator<_CharT> >::__type
363 __copy_move_a2(
const _CharT* __first,
const _CharT* __last,
364 ostreambuf_iterator<_CharT> __result)
368 __result._M_put(__first, __num);
372 template<
bool _IsMove,
typename _CharT>
373 typename __gnu_cxx::__enable_if<__is_char<_CharT>::__value,
375 __copy_move_a2(istreambuf_iterator<_CharT> __first,
376 istreambuf_iterator<_CharT> __last, _CharT* __result)
378 typedef istreambuf_iterator<_CharT> __is_iterator_type;
379 typedef typename __is_iterator_type::traits_type traits_type;
380 typedef typename __is_iterator_type::streambuf_type streambuf_type;
381 typedef typename traits_type::int_type int_type;
383 if (__first._M_sbuf && !__last._M_sbuf)
385 streambuf_type* __sb = __first._M_sbuf;
386 int_type __c = __sb->sgetc();
387 while (!traits_type::eq_int_type(__c, traits_type::eof()))
389 const streamsize __n = __sb->egptr() - __sb->gptr();
392 traits_type::copy(__result, __sb->gptr(), __n);
393 __sb->__safe_gbump(__n);
395 __c = __sb->underflow();
399 *__result++ = traits_type::to_char_type(__c);
400 __c = __sb->snextc();
407 template<
typename _CharT,
typename _Size>
408 typename __gnu_cxx::__enable_if<__is_char<_CharT>::__value,
410 __copy_n_a(istreambuf_iterator<_CharT> __it, _Size __n, _CharT* __result,
411 bool __strict __attribute__((__unused__)))
416 __glibcxx_requires_cond(__it._M_sbuf,
417 _M_message(__gnu_debug::__msg_inc_istreambuf)
419 _CharT* __beg = __result;
420 __result += __it._M_sbuf->sgetn(__beg, __n);
421 __glibcxx_requires_cond(!__strict || __result - __beg == __n,
422 _M_message(__gnu_debug::__msg_inc_istreambuf)
427 template<
typename _CharT>
428 typename __gnu_cxx::__enable_if<__is_char<_CharT>::__value,
429 istreambuf_iterator<_CharT> >::__type
430 find(istreambuf_iterator<_CharT> __first,
431 istreambuf_iterator<_CharT> __last,
const _CharT& __val)
433 typedef istreambuf_iterator<_CharT> __is_iterator_type;
434 typedef typename __is_iterator_type::traits_type traits_type;
435 typedef typename __is_iterator_type::streambuf_type streambuf_type;
436 typedef typename traits_type::int_type int_type;
437 const int_type __eof = traits_type::eof();
439 if (__first._M_sbuf && !__last._M_sbuf)
441 const int_type __ival = traits_type::to_int_type(__val);
442 streambuf_type* __sb = __first._M_sbuf;
443 int_type __c = __sb->sgetc();
444 while (!traits_type::eq_int_type(__c, __eof)
445 && !traits_type::eq_int_type(__c, __ival))
447 streamsize __n = __sb->egptr() - __sb->gptr();
450 const _CharT* __p = traits_type::find(__sb->gptr(),
453 __n = __p - __sb->gptr();
454 __sb->__safe_gbump(__n);
458 __c = __sb->snextc();
461 __first._M_c = __eof;
467 template<
typename _CharT,
typename _Distance>
468 typename __gnu_cxx::__enable_if<__is_char<_CharT>::__value,
470 advance(istreambuf_iterator<_CharT>& __i, _Distance __n)
475 __glibcxx_assert(__n > 0);
476 __glibcxx_requires_cond(!__i._M_at_eof(),
477 _M_message(__gnu_debug::__msg_inc_istreambuf)
480 typedef istreambuf_iterator<_CharT> __is_iterator_type;
481 typedef typename __is_iterator_type::traits_type traits_type;
482 typedef typename __is_iterator_type::streambuf_type streambuf_type;
483 typedef typename traits_type::int_type int_type;
484 const int_type __eof = traits_type::eof();
486 streambuf_type* __sb = __i._M_sbuf;
489 streamsize __size = __sb->egptr() - __sb->gptr();
492 __sb->__safe_gbump(__n);
496 __sb->__safe_gbump(__size);
498 if (traits_type::eq_int_type(__sb->underflow(), __eof))
500 __glibcxx_requires_cond(__n == 0,
501 _M_message(__gnu_debug::__msg_inc_istreambuf)
512 _GLIBCXX_END_NAMESPACE_VERSION
ISO C++ entities toplevel namespace is std.
ptrdiff_t streamsize
Integral type for I/O operation counts and buffer sizes.
constexpr void advance(_InputIterator &__i, _Distance __n)
A generalization of pointer arithmetic.
The actual work of input and output (interface).
streamsize sputn(const char_type *__s, streamsize __n)
Entry point for all single-character output functions.
int_type sbumpc()
Getting the next character.
int_type sgetc()
Getting the next character.
int_type sputc(char_type __c)
Entry point for all single-character output functions.
Template class basic_istream.
Template class basic_ostream.
Provides input iterator semantics for streambufs.
basic_streambuf< _CharT, _Traits > streambuf_type
Public typedefs.
void pointer
Public typedefs.
istreambuf_iterator & operator++()
Advance the iterator. Calls streambuf.sbumpc().
constexpr istreambuf_iterator() noexcept
Construct end of input stream iterator.
basic_istream< _CharT, _Traits > istream_type
Public typedefs.
char_type operator*() const
Return the current character pointed to by iterator. This returns streambuf.sgetc()....
bool equal(const istreambuf_iterator &__b) const
Return true both iterators are end or both are not end.
_Traits traits_type
Public typedefs.
istreambuf_iterator(istream_type &__s) noexcept
Construct start of input stream iterator.
istreambuf_iterator operator++(int)
Advance the iterator. Calls streambuf.sbumpc().
_CharT char_type
Public typedefs.
istreambuf_iterator(streambuf_type *__s) noexcept
Construct start of streambuf iterator.
_Traits::int_type int_type
Public typedefs.
Provides output iterator semantics for streambufs.
ostreambuf_iterator & operator++()
Return *this.
ostreambuf_iterator & operator*()
Return *this.
ptrdiff_t difference_type
Public typedefs.
bool failed() const noexcept
Return true if previous operator=() failed.
_Traits traits_type
Public typedefs.
basic_ostream< _CharT, _Traits > ostream_type
Public typedefs.
basic_streambuf< _CharT, _Traits > streambuf_type
Public typedefs.
ostreambuf_iterator & operator=(_CharT __c)
Write character to streambuf. Calls streambuf.sputc().
ostreambuf_iterator(ostream_type &__s) noexcept
Construct output iterator from ostream.
ostreambuf_iterator & operator++(int)
Return *this.
_CharT char_type
Public typedefs.
ostreambuf_iterator(streambuf_type *__s) noexcept
Construct output iterator from streambuf.
_CharT reference
This type represents a reference-to-value_type.