/project/jni/stlport/stlport/stl/_ostream.c

  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#ifndef _STLP_OSTREAM_C
 19#define _STLP_OSTREAM_C
 20
 21#ifndef _STLP_INTERNAL_OSTREAM_H
 22#  include <stl/_ostream.h>
 23#endif
 24
 25#if !defined (_STLP_INTERNAL_NUM_PUT_H)
 26#  include <stl/_num_put.h>            // For basic_streambuf and iterators
 27#endif
 28
 29_STLP_BEGIN_NAMESPACE
 30
 31//----------------------------------------------------------------------
 32// Definitions of non-inline member functions.
 33
 34// Constructor, destructor
 35
 36template <class _CharT, class _Traits>
 37basic_ostream<_CharT, _Traits>::basic_ostream(basic_streambuf<_CharT, _Traits>* __buf)
 38    : basic_ios<_CharT, _Traits>() {
 39  this->init(__buf);
 40}
 41
 42template <class _CharT, class _Traits>
 43basic_ostream<_CharT, _Traits>::~basic_ostream()
 44{}
 45
 46// Output directly from a streambuf.
 47template <class _CharT, class _Traits>
 48basic_ostream<_CharT, _Traits>&
 49basic_ostream<_CharT, _Traits>::operator<<(basic_streambuf<_CharT, _Traits>* __from) {
 50  sentry __sentry(*this);
 51  if (__sentry) {
 52    if (__from) {
 53      bool __any_inserted = __from->gptr() != __from->egptr()
 54        ? this->_M_copy_buffered(__from, this->rdbuf())
 55        : this->_M_copy_unbuffered(__from, this->rdbuf());
 56      if (!__any_inserted)
 57        this->setstate(ios_base::failbit);
 58    }
 59    else
 60      this->setstate(ios_base::badbit);
 61  }
 62
 63  return *this;
 64}
 65
 66// Helper functions for the streambuf version of operator<<.  The
 67// exception-handling code is complicated because exceptions thrown
 68// while extracting characters are treated differently than exceptions
 69// thrown while inserting characters.
 70
 71template <class _CharT, class _Traits>
 72bool basic_ostream<_CharT, _Traits>
 73  ::_M_copy_buffered(basic_streambuf<_CharT, _Traits>* __from,
 74                     basic_streambuf<_CharT, _Traits>* __to) {
 75  bool __any_inserted = false;
 76
 77  while (__from->egptr() != __from->gptr()) {
 78    const ptrdiff_t __avail = __from->egptr() - __from->gptr();
 79
 80    streamsize __nwritten;
 81    _STLP_TRY {
 82      __nwritten = __to->sputn(__from->gptr(), __avail);
 83      __from->gbump((int)__nwritten);
 84    }
 85    _STLP_CATCH_ALL {
 86      this->_M_handle_exception(ios_base::badbit);
 87      return __any_inserted;
 88    }
 89
 90    if (__nwritten == __avail) {
 91      _STLP_TRY {
 92        if (this->_S_eof(__from->sgetc()))
 93          return true;
 94        else
 95          __any_inserted = true;
 96      }
 97      _STLP_CATCH_ALL {
 98        this->_M_handle_exception(ios_base::failbit);
 99        return false;
100      }
101    }
102    else if (__nwritten != 0)
103      return true;
104    else
105      return __any_inserted;
106  }
107
108  // No characters are in the buffer, but we aren't at EOF.  Switch to
109  // unbuffered mode.
110  return __any_inserted || this->_M_copy_unbuffered(__from, __to);
111}
112
113/*
114 * Helper struct (guard) to put back a character in a streambuf
115 * whenever an exception or an eof occur.
116 */
117template <class _CharT, class _Traits>
118struct _SPutBackC {
119  typedef basic_streambuf<_CharT, _Traits> _StreamBuf;
120  typedef typename _StreamBuf::int_type int_type;
121  _SPutBackC(_StreamBuf *pfrom)
122    : __pfrom(pfrom), __c(0), __do_guard(false) {}
123  ~_SPutBackC() {
124    if (__do_guard) {
125      __pfrom->sputbackc(_Traits::to_char_type(__c));
126    }
127  }
128
129  void guard(int_type c) {
130    __c = c;
131    __do_guard = true;
132  }
133  void release() {
134    __do_guard = false;
135  }
136
137private:
138  _StreamBuf *__pfrom;
139  int_type __c;
140  bool __do_guard;
141};
142
143template <class _CharT, class _Traits>
144bool basic_ostream<_CharT, _Traits>
145  ::_M_copy_unbuffered(basic_streambuf<_CharT, _Traits>* __from,
146                       basic_streambuf<_CharT, _Traits>* __to) {
147  typedef _SPutBackC<_CharT, _Traits> _SPutBackCGuard;
148  bool __any_inserted = false;
149  int_type __c;
150
151  _STLP_TRY {
152    _SPutBackCGuard __cguard(__from);
153    for (;;) {
154      _STLP_TRY {
155        __c = __from->sbumpc();
156      }
157      _STLP_CATCH_ALL {
158        this->_M_handle_exception(ios_base::failbit);
159        return __any_inserted;
160      }
161
162      if ( this->_S_eof(__c) )
163        return __any_inserted;
164
165      __cguard.guard(__c);
166      if ( this->_S_eof( __to->sputc(_Traits::to_char_type(__c)) ) ) {
167        return __any_inserted;
168      }
169
170      __cguard.release();
171      __any_inserted = true;
172    }
173  }
174  _STLP_CATCH_ALL {
175    this->_M_handle_exception(ios_base::badbit);
176    return __any_inserted;
177  }
178}
179
180_STLP_MOVE_TO_PRIV_NAMESPACE
181
182// Helper function for numeric output.
183template <class _CharT, class _Traits, class _Number>
184basic_ostream<_CharT, _Traits>&  _STLP_CALL
185__put_num(basic_ostream<_CharT, _Traits>& __os, _Number __x) {
186  typedef typename basic_ostream<_CharT, _Traits>::sentry _Sentry;
187  _Sentry __sentry(__os);
188  bool __failed = true;
189
190  if (__sentry) {
191    _STLP_TRY {
192      typedef num_put<_CharT, ostreambuf_iterator<_CharT, _Traits> > _NumPut;
193      __failed = (use_facet<_NumPut>(__os.getloc())).put(ostreambuf_iterator<_CharT, _Traits>(__os.rdbuf()),
194                                                         __os, __os.fill(),
195                                                         __x).failed();
196    }
197    _STLP_CATCH_ALL {
198      __os._M_handle_exception(ios_base::badbit);
199    }
200  }
201  if (__failed)
202    __os.setstate(ios_base::badbit);
203  return __os;
204}
205
206_STLP_MOVE_TO_STD_NAMESPACE
207
208/*
209 * In the following operators we try to limit code bloat by limiting the
210 * number of __put_num instanciations.
211 */
212template <class _CharT, class _Traits>
213basic_ostream<_CharT, _Traits>& basic_ostream<_CharT, _Traits>::operator<<(short __x) {
214  _STLP_STATIC_ASSERT( sizeof(short) <= sizeof(long) )
215  long __tmp = ((this->flags() & _Basic_ios::basefield) != ios_base::dec) ?
216                  __STATIC_CAST(long, __STATIC_CAST(unsigned short, __x)): __x;
217  return _STLP_PRIV __put_num(*this, __tmp);
218}
219
220template <class _CharT, class _Traits>
221basic_ostream<_CharT, _Traits>& basic_ostream<_CharT, _Traits>::operator<<(unsigned short __x) {
222  _STLP_STATIC_ASSERT( sizeof(unsigned short) <= sizeof(unsigned long) )
223  return _STLP_PRIV __put_num(*this, __STATIC_CAST(unsigned long,__x));
224}
225
226template <class _CharT, class _Traits>
227basic_ostream<_CharT, _Traits>& basic_ostream<_CharT, _Traits>::operator<<(int __x) {
228  _STLP_STATIC_ASSERT( sizeof(int) <= sizeof(long) )
229  long __tmp = ((this->flags() & _Basic_ios::basefield) != ios_base::dec) ?
230                  __STATIC_CAST(long, __STATIC_CAST(unsigned int, __x)): __x;
231  return _STLP_PRIV __put_num(*this, __tmp);
232}
233
234template <class _CharT, class _Traits>
235#if defined (_WIN64) || !defined (_STLP_MSVC) || (_STLP_MSVC < 1300)
236basic_ostream<_CharT, _Traits>& basic_ostream<_CharT, _Traits>::operator<<(unsigned int __x) {
237  _STLP_STATIC_ASSERT( sizeof(unsigned int) <= sizeof(unsigned long) )
238#else
239/* We define this operator with size_t rather than unsigned int to avoid
240 * 64 bits warning.
241 */
242basic_ostream<_CharT, _Traits>& basic_ostream<_CharT, _Traits>::operator<<(size_t __x) {
243  _STLP_STATIC_ASSERT( sizeof(size_t) <= sizeof(unsigned long) )
244#endif
245  return _STLP_PRIV __put_num(*this,  __STATIC_CAST(unsigned long,__x));
246}
247
248template <class _CharT, class _Traits>
249basic_ostream<_CharT, _Traits>& basic_ostream<_CharT, _Traits>::operator<<(long __x)
250{ return _STLP_PRIV __put_num(*this,  __x); }
251
252template <class _CharT, class _Traits>
253basic_ostream<_CharT, _Traits>& basic_ostream<_CharT, _Traits>::operator<<(unsigned long __x)
254{ return _STLP_PRIV __put_num(*this,  __x); }
255
256#ifdef _STLP_LONG_LONG
257template <class _CharT, class _Traits>
258basic_ostream<_CharT, _Traits>& basic_ostream<_CharT, _Traits>::operator<< (_STLP_LONG_LONG __x)
259{ return _STLP_PRIV __put_num(*this,  __x); }
260
261template <class _CharT, class _Traits>
262basic_ostream<_CharT, _Traits>& basic_ostream<_CharT, _Traits>::operator<< (unsigned _STLP_LONG_LONG __x)
263{ return _STLP_PRIV __put_num(*this,  __x); }
264#endif
265
266template <class _CharT, class _Traits>
267basic_ostream<_CharT, _Traits>& basic_ostream<_CharT, _Traits>::operator<<(float __x)
268{ return _STLP_PRIV __put_num(*this,  __STATIC_CAST(double,__x)); }
269
270template <class _CharT, class _Traits>
271basic_ostream<_CharT, _Traits>& basic_ostream<_CharT, _Traits>::operator<<(double __x)
272{ return _STLP_PRIV __put_num(*this,  __x); }
273
274#ifndef _STLP_NO_LONG_DOUBLE
275template <class _CharT, class _Traits>
276basic_ostream<_CharT, _Traits>& basic_ostream<_CharT, _Traits>::operator<<(long double __x)
277{ return _STLP_PRIV __put_num(*this,  __x); }
278#endif
279
280template <class _CharT, class _Traits>
281basic_ostream<_CharT, _Traits>& basic_ostream<_CharT, _Traits>::operator<<(const void* __x)
282{ return _STLP_PRIV __put_num(*this,  __x); }
283
284#ifndef _STLP_NO_BOOL
285template <class _CharT, class _Traits>
286basic_ostream<_CharT, _Traits>& basic_ostream<_CharT, _Traits>::operator<<(bool __x)
287{ return _STLP_PRIV __put_num(*this,  __x); }
288#endif
289
290template <class _CharT, class _Traits>
291void basic_ostream<_CharT, _Traits>::_M_put_char(_CharT __c) {
292  sentry __sentry(*this);
293  if (__sentry) {
294    bool __failed = true;
295    _STLP_TRY {
296      streamsize __npad = this->width() > 0 ? this->width() - 1 : 0;
297      //      if (__npad <= 1)
298      if (__npad == 0)
299        __failed = this->_S_eof(this->rdbuf()->sputc(__c));
300      else if ((this->flags() & ios_base::adjustfield) == ios_base::left) {
301        __failed = this->_S_eof(this->rdbuf()->sputc(__c));
302        __failed = __failed ||
303                   this->rdbuf()->_M_sputnc(this->fill(), __npad) != __npad;
304      }
305      else {
306        __failed = this->rdbuf()->_M_sputnc(this->fill(), __npad) != __npad;
307        __failed = __failed || this->_S_eof(this->rdbuf()->sputc(__c));
308      }
309
310      this->width(0);
311    }
312    _STLP_CATCH_ALL {
313      this->_M_handle_exception(ios_base::badbit);
314    }
315
316    if (__failed)
317      this->setstate(ios_base::badbit);
318  }
319}
320
321template <class _CharT, class _Traits>
322void basic_ostream<_CharT, _Traits>::_M_put_nowiden(const _CharT* __s) {
323  sentry __sentry(*this);
324  if (__sentry) {
325    bool __failed = true;
326    streamsize __n = _Traits::length(__s);
327    streamsize __npad = this->width() > __n ? this->width() - __n : 0;
328
329    _STLP_TRY {
330      if (__npad == 0)
331        __failed = this->rdbuf()->sputn(__s, __n) != __n;
332      else if ((this->flags() & ios_base::adjustfield) == ios_base::left) {
333        __failed = this->rdbuf()->sputn(__s, __n) != __n;
334        __failed = __failed ||
335                   this->rdbuf()->_M_sputnc(this->fill(), __npad) != __npad;
336      }
337      else {
338        __failed = this->rdbuf()->_M_sputnc(this->fill(), __npad) != __npad;
339        __failed = __failed || this->rdbuf()->sputn(__s, __n) != __n;
340      }
341
342      this->width(0);
343    }
344    _STLP_CATCH_ALL {
345      this->_M_handle_exception(ios_base::badbit);
346    }
347
348    if (__failed)
349      this->setstate(ios_base::failbit);
350  }
351}
352
353template <class _CharT, class _Traits>
354void basic_ostream<_CharT, _Traits>::_M_put_widen(const char* __s) {
355  sentry __sentry(*this);
356  if (__sentry) {
357    bool __failed = true;
358    streamsize __n = char_traits<char>::length(__s);
359    streamsize __npad = this->width() > __n ? this->width() - __n : 0;
360
361    _STLP_TRY {
362      if (__npad == 0)
363        __failed = !this->_M_put_widen_aux(__s, __n);
364      else if ((this->flags() & ios_base::adjustfield) == ios_base::left) {
365        __failed = !this->_M_put_widen_aux(__s, __n);
366        __failed = __failed ||
367                   this->rdbuf()->_M_sputnc(this->fill(), __npad) != __npad;
368      }
369      else {
370        __failed = this->rdbuf()->_M_sputnc(this->fill(), __npad) != __npad;
371        __failed = __failed || !this->_M_put_widen_aux(__s, __n);
372      }
373
374      this->width(0);
375    }
376    _STLP_CATCH_ALL {
377      this->_M_handle_exception(ios_base::badbit);
378    }
379
380    if (__failed)
381      this->setstate(ios_base::failbit);
382  }
383}
384
385template <class _CharT, class _Traits>
386bool basic_ostream<_CharT, _Traits>::_M_put_widen_aux(const char* __s,
387                                                      streamsize __n) {
388  basic_streambuf<_CharT, _Traits>* __buf = this->rdbuf();
389
390  for ( ; __n > 0 ; --__n)
391    if (this->_S_eof(__buf->sputc(this->widen(*__s++))))
392      return false;
393  return true;
394}
395
396// Unformatted output of a single character.
397template <class _CharT, class _Traits>
398basic_ostream<_CharT, _Traits>&
399basic_ostream<_CharT, _Traits>::put(char_type __c) {
400  sentry __sentry(*this);
401  bool __failed = true;
402
403  if (__sentry) {
404    _STLP_TRY {
405      __failed = this->_S_eof(this->rdbuf()->sputc(__c));
406    }
407    _STLP_CATCH_ALL {
408      this->_M_handle_exception(ios_base::badbit);
409    }
410  }
411
412  if (__failed)
413    this->setstate(ios_base::badbit);
414
415  return *this;
416}
417
418// Unformatted output of a single character.
419template <class _CharT, class _Traits>
420basic_ostream<_CharT, _Traits>&
421basic_ostream<_CharT, _Traits>::write(const char_type* __s, streamsize __n) {
422  sentry __sentry(*this);
423  bool __failed = true;
424
425  if (__sentry) {
426    _STLP_TRY {
427      __failed = this->rdbuf()->sputn(__s, __n) != __n;
428    }
429    _STLP_CATCH_ALL {
430      this->_M_handle_exception(ios_base::badbit);
431    }
432  }
433
434  if (__failed)
435    this->setstate(ios_base::badbit);
436
437  return *this;
438}
439
440_STLP_END_NAMESPACE
441
442#endif /* _STLP_OSTREAM_C */
443
444// Local Variables:
445// mode:C++
446// End: