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456 lines
13 KiB
C
456 lines
13 KiB
C
![]() |
/*
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* Copyright (c) 1999
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* Silicon Graphics Computer Systems, Inc.
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*
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* Copyright (c) 1999
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* Boris Fomitchev
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*
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* This material is provided "as is", with absolutely no warranty expressed
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* or implied. Any use is at your own risk.
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*
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* Permission to use or copy this software for any purpose is hereby granted
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* without fee, provided the above notices are retained on all copies.
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* Permission to modify the code and to distribute modified code is granted,
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* provided the above notices are retained, and a notice that the code was
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* modified is included with the above copyright notice.
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*
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*/
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#ifndef _STLP_OSTREAM_C
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#define _STLP_OSTREAM_C
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#ifndef _STLP_INTERNAL_OSTREAM_H
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# include <stl/_ostream.h>
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#endif
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#if !defined (_STLP_INTERNAL_NUM_PUT_H)
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# include <stl/_num_put.h> // For basic_streambuf and iterators
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#endif
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_STLP_BEGIN_NAMESPACE
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//----------------------------------------------------------------------
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// Definitions of non-inline member functions.
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// Constructor, destructor
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template <class _CharT, class _Traits>
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basic_ostream<_CharT, _Traits>::basic_ostream(basic_streambuf<_CharT, _Traits>* __buf)
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: basic_ios<_CharT, _Traits>() {
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this->init(__buf);
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}
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template <class _CharT, class _Traits>
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basic_ostream<_CharT, _Traits>::~basic_ostream()
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{}
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// Output directly from a streambuf.
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template <class _CharT, class _Traits>
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basic_ostream<_CharT, _Traits>&
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basic_ostream<_CharT, _Traits>::operator<<(basic_streambuf<_CharT, _Traits>* __from) {
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sentry __sentry(*this);
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if (__sentry) {
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if (__from) {
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bool __any_inserted = __from->gptr() != __from->egptr()
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? this->_M_copy_buffered(__from, this->rdbuf())
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: this->_M_copy_unbuffered(__from, this->rdbuf());
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if (!__any_inserted)
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this->setstate(ios_base::failbit);
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}
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else
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this->setstate(ios_base::badbit);
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}
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return *this;
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}
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// Helper functions for the streambuf version of operator<<. The
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// exception-handling code is complicated because exceptions thrown
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// while extracting characters are treated differently than exceptions
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// thrown while inserting characters.
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template <class _CharT, class _Traits>
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bool basic_ostream<_CharT, _Traits>
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::_M_copy_buffered(basic_streambuf<_CharT, _Traits>* __from,
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basic_streambuf<_CharT, _Traits>* __to) {
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bool __any_inserted = false;
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while (__from->egptr() != __from->gptr()) {
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const ptrdiff_t __avail = __from->egptr() - __from->gptr();
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streamsize __nwritten;
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_STLP_TRY {
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__nwritten = __to->sputn(__from->gptr(), __avail);
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__from->gbump((int)__nwritten);
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}
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_STLP_CATCH_ALL {
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this->_M_handle_exception(ios_base::badbit);
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return __any_inserted;
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}
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if (__nwritten == __avail) {
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_STLP_TRY {
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if (this->_S_eof(__from->sgetc()))
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return true;
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else
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__any_inserted = true;
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}
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_STLP_CATCH_ALL {
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this->_M_handle_exception(ios_base::failbit);
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return false;
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}
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}
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else if (__nwritten != 0)
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return true;
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else
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return __any_inserted;
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}
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// No characters are in the buffer, but we aren't at EOF. Switch to
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// unbuffered mode.
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return __any_inserted || this->_M_copy_unbuffered(__from, __to);
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}
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/*
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* Helper struct (guard) to put back a character in a streambuf
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* whenever an exception or an eof occur.
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*/
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template <class _CharT, class _Traits>
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struct _SPutBackC {
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typedef basic_streambuf<_CharT, _Traits> _StreamBuf;
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typedef typename _StreamBuf::int_type int_type;
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_SPutBackC(_StreamBuf *pfrom)
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: __pfrom(pfrom), __c(0), __do_guard(false) {}
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~_SPutBackC() {
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if (__do_guard) {
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__pfrom->sputbackc(_Traits::to_char_type(__c));
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}
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}
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void guard(int_type c) {
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__c = c;
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__do_guard = true;
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}
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void release() {
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__do_guard = false;
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}
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private:
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_StreamBuf *__pfrom;
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int_type __c;
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bool __do_guard;
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};
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template <class _CharT, class _Traits>
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bool basic_ostream<_CharT, _Traits>
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::_M_copy_unbuffered(basic_streambuf<_CharT, _Traits>* __from,
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basic_streambuf<_CharT, _Traits>* __to) {
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typedef _SPutBackC<_CharT, _Traits> _SPutBackCGuard;
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bool __any_inserted = false;
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int_type __c;
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_STLP_TRY {
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_SPutBackCGuard __cguard(__from);
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for (;;) {
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_STLP_TRY {
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__c = __from->sbumpc();
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}
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_STLP_CATCH_ALL {
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this->_M_handle_exception(ios_base::failbit);
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break;
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}
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if (this->_S_eof(__c))
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break;
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__cguard.guard(__c);
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#if defined (__DMC__)
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_STLP_TRY {
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#endif
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if (this->_S_eof(__to->sputc(_Traits::to_char_type(__c))))
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break;
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#if defined (__DMC__)
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}
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_STLP_CATCH_ALL {
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this->_M_handle_exception(ios_base::badbit);
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break;
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}
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#endif
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__cguard.release();
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__any_inserted = true;
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}
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}
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_STLP_CATCH_ALL {
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this->_M_handle_exception(ios_base::badbit);
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}
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return __any_inserted;
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}
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_STLP_MOVE_TO_PRIV_NAMESPACE
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// Helper function for numeric output.
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template <class _CharT, class _Traits, class _Number>
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basic_ostream<_CharT, _Traits>& _STLP_CALL
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__put_num(basic_ostream<_CharT, _Traits>& __os, _Number __x) {
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typedef typename basic_ostream<_CharT, _Traits>::sentry _Sentry;
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_Sentry __sentry(__os);
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bool __failed = true;
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if (__sentry) {
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_STLP_TRY {
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typedef num_put<_CharT, ostreambuf_iterator<_CharT, _Traits> > _NumPut;
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__failed = (use_facet<_NumPut>(__os.getloc())).put(ostreambuf_iterator<_CharT, _Traits>(__os.rdbuf()),
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__os, __os.fill(),
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__x).failed();
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}
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_STLP_CATCH_ALL {
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__os._M_handle_exception(ios_base::badbit);
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}
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}
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if (__failed)
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__os.setstate(ios_base::badbit);
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return __os;
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}
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_STLP_MOVE_TO_STD_NAMESPACE
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/*
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* In the following operators we try to limit code bloat by limiting the
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* number of __put_num instanciations.
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*/
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template <class _CharT, class _Traits>
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basic_ostream<_CharT, _Traits>& basic_ostream<_CharT, _Traits>::operator<<(short __x) {
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_STLP_STATIC_ASSERT( sizeof(short) <= sizeof(long) )
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long __tmp = ((this->flags() & _Basic_ios::basefield) != ios_base::dec) ?
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__STATIC_CAST(long, __STATIC_CAST(unsigned short, __x)): __x;
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return _STLP_PRIV __put_num(*this, __tmp);
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}
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template <class _CharT, class _Traits>
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basic_ostream<_CharT, _Traits>& basic_ostream<_CharT, _Traits>::operator<<(unsigned short __x) {
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_STLP_STATIC_ASSERT( sizeof(unsigned short) <= sizeof(unsigned long) )
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return _STLP_PRIV __put_num(*this, __STATIC_CAST(unsigned long,__x));
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}
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template <class _CharT, class _Traits>
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basic_ostream<_CharT, _Traits>& basic_ostream<_CharT, _Traits>::operator<<(int __x) {
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_STLP_STATIC_ASSERT( sizeof(int) <= sizeof(long) )
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long __tmp = ((this->flags() & _Basic_ios::basefield) != ios_base::dec) ?
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__STATIC_CAST(long, __STATIC_CAST(unsigned int, __x)): __x;
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return _STLP_PRIV __put_num(*this, __tmp);
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}
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template <class _CharT, class _Traits>
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#if defined (_WIN64) || !defined (_STLP_MSVC) || (_STLP_MSVC < 1300)
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basic_ostream<_CharT, _Traits>& basic_ostream<_CharT, _Traits>::operator<<(unsigned int __x) {
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_STLP_STATIC_ASSERT( sizeof(unsigned int) <= sizeof(unsigned long) )
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#else
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/* We define this operator with size_t rather than unsigned int to avoid
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* 64 bits warning.
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*/
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basic_ostream<_CharT, _Traits>& basic_ostream<_CharT, _Traits>::operator<<(size_t __x) {
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_STLP_STATIC_ASSERT( sizeof(size_t) <= sizeof(unsigned long) )
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#endif
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return _STLP_PRIV __put_num(*this, __STATIC_CAST(unsigned long,__x));
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}
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template <class _CharT, class _Traits>
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basic_ostream<_CharT, _Traits>& basic_ostream<_CharT, _Traits>::operator<<(long __x)
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{ return _STLP_PRIV __put_num(*this, __x); }
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template <class _CharT, class _Traits>
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basic_ostream<_CharT, _Traits>& basic_ostream<_CharT, _Traits>::operator<<(unsigned long __x)
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{ return _STLP_PRIV __put_num(*this, __x); }
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#ifdef _STLP_LONG_LONG
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template <class _CharT, class _Traits>
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basic_ostream<_CharT, _Traits>& basic_ostream<_CharT, _Traits>::operator<< (_STLP_LONG_LONG __x)
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{ return _STLP_PRIV __put_num(*this, __x); }
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template <class _CharT, class _Traits>
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basic_ostream<_CharT, _Traits>& basic_ostream<_CharT, _Traits>::operator<< (unsigned _STLP_LONG_LONG __x)
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{ return _STLP_PRIV __put_num(*this, __x); }
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#endif
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template <class _CharT, class _Traits>
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basic_ostream<_CharT, _Traits>& basic_ostream<_CharT, _Traits>::operator<<(float __x)
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{ return _STLP_PRIV __put_num(*this, __STATIC_CAST(double,__x)); }
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template <class _CharT, class _Traits>
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basic_ostream<_CharT, _Traits>& basic_ostream<_CharT, _Traits>::operator<<(double __x)
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{ return _STLP_PRIV __put_num(*this, __x); }
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#ifndef _STLP_NO_LONG_DOUBLE
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template <class _CharT, class _Traits>
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basic_ostream<_CharT, _Traits>& basic_ostream<_CharT, _Traits>::operator<<(long double __x)
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{ return _STLP_PRIV __put_num(*this, __x); }
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#endif
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template <class _CharT, class _Traits>
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basic_ostream<_CharT, _Traits>& basic_ostream<_CharT, _Traits>::operator<<(const void* __x)
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{ return _STLP_PRIV __put_num(*this, __x); }
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#ifndef _STLP_NO_BOOL
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template <class _CharT, class _Traits>
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basic_ostream<_CharT, _Traits>& basic_ostream<_CharT, _Traits>::operator<<(bool __x)
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{ return _STLP_PRIV __put_num(*this, __x); }
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#endif
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template <class _CharT, class _Traits>
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void basic_ostream<_CharT, _Traits>::_M_put_char(_CharT __c) {
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sentry __sentry(*this);
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if (__sentry) {
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bool __failed = true;
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_STLP_TRY {
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streamsize __npad = this->width() > 0 ? this->width() - 1 : 0;
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// if (__npad <= 1)
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if (__npad == 0)
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__failed = this->_S_eof(this->rdbuf()->sputc(__c));
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else if ((this->flags() & ios_base::adjustfield) == ios_base::left) {
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__failed = this->_S_eof(this->rdbuf()->sputc(__c));
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__failed = __failed ||
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this->rdbuf()->_M_sputnc(this->fill(), __npad) != __npad;
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}
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else {
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__failed = this->rdbuf()->_M_sputnc(this->fill(), __npad) != __npad;
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__failed = __failed || this->_S_eof(this->rdbuf()->sputc(__c));
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}
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this->width(0);
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}
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_STLP_CATCH_ALL {
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this->_M_handle_exception(ios_base::badbit);
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}
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if (__failed)
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this->setstate(ios_base::badbit);
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}
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}
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template <class _CharT, class _Traits>
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void basic_ostream<_CharT, _Traits>::_M_put_nowiden(const _CharT* __s) {
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sentry __sentry(*this);
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if (__sentry) {
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bool __failed = true;
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streamsize __n = _Traits::length(__s);
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streamsize __npad = this->width() > __n ? this->width() - __n : 0;
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_STLP_TRY {
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if (__npad == 0)
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__failed = this->rdbuf()->sputn(__s, __n) != __n;
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else if ((this->flags() & ios_base::adjustfield) == ios_base::left) {
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__failed = this->rdbuf()->sputn(__s, __n) != __n;
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__failed = __failed ||
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this->rdbuf()->_M_sputnc(this->fill(), __npad) != __npad;
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}
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else {
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__failed = this->rdbuf()->_M_sputnc(this->fill(), __npad) != __npad;
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__failed = __failed || this->rdbuf()->sputn(__s, __n) != __n;
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}
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this->width(0);
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}
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_STLP_CATCH_ALL {
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this->_M_handle_exception(ios_base::badbit);
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}
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if (__failed)
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this->setstate(ios_base::failbit);
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}
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}
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template <class _CharT, class _Traits>
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void basic_ostream<_CharT, _Traits>::_M_put_widen(const char* __s) {
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sentry __sentry(*this);
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if (__sentry) {
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bool __failed = true;
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streamsize __n = char_traits<char>::length(__s);
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streamsize __npad = this->width() > __n ? this->width() - __n : 0;
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_STLP_TRY {
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if (__npad == 0)
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__failed = !this->_M_put_widen_aux(__s, __n);
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else if ((this->flags() & ios_base::adjustfield) == ios_base::left) {
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__failed = !this->_M_put_widen_aux(__s, __n);
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__failed = __failed ||
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this->rdbuf()->_M_sputnc(this->fill(), __npad) != __npad;
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}
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else {
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__failed = this->rdbuf()->_M_sputnc(this->fill(), __npad) != __npad;
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__failed = __failed || !this->_M_put_widen_aux(__s, __n);
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}
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this->width(0);
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}
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_STLP_CATCH_ALL {
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this->_M_handle_exception(ios_base::badbit);
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}
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if (__failed)
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this->setstate(ios_base::failbit);
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}
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}
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template <class _CharT, class _Traits>
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bool basic_ostream<_CharT, _Traits>::_M_put_widen_aux(const char* __s,
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streamsize __n) {
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basic_streambuf<_CharT, _Traits>* __buf = this->rdbuf();
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|
|
||
|
for ( ; __n > 0 ; --__n)
|
||
|
if (this->_S_eof(__buf->sputc(this->widen(*__s++))))
|
||
|
return false;
|
||
|
return true;
|
||
|
}
|
||
|
|
||
|
// Unformatted output of a single character.
|
||
|
template <class _CharT, class _Traits>
|
||
|
basic_ostream<_CharT, _Traits>&
|
||
|
basic_ostream<_CharT, _Traits>::put(char_type __c) {
|
||
|
sentry __sentry(*this);
|
||
|
bool __failed = true;
|
||
|
|
||
|
if (__sentry) {
|
||
|
_STLP_TRY {
|
||
|
__failed = this->_S_eof(this->rdbuf()->sputc(__c));
|
||
|
}
|
||
|
_STLP_CATCH_ALL {
|
||
|
this->_M_handle_exception(ios_base::badbit);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
if (__failed)
|
||
|
this->setstate(ios_base::badbit);
|
||
|
|
||
|
return *this;
|
||
|
}
|
||
|
|
||
|
// Unformatted output of a single character.
|
||
|
template <class _CharT, class _Traits>
|
||
|
basic_ostream<_CharT, _Traits>&
|
||
|
basic_ostream<_CharT, _Traits>::write(const char_type* __s, streamsize __n) {
|
||
|
sentry __sentry(*this);
|
||
|
bool __failed = true;
|
||
|
|
||
|
if (__sentry) {
|
||
|
_STLP_TRY {
|
||
|
__failed = this->rdbuf()->sputn(__s, __n) != __n;
|
||
|
}
|
||
|
_STLP_CATCH_ALL {
|
||
|
this->_M_handle_exception(ios_base::badbit);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
if (__failed)
|
||
|
this->setstate(ios_base::badbit);
|
||
|
|
||
|
return *this;
|
||
|
}
|
||
|
|
||
|
_STLP_END_NAMESPACE
|
||
|
|
||
|
#endif /* _STLP_OSTREAM_C */
|
||
|
|
||
|
// Local Variables:
|
||
|
// mode:C++
|
||
|
// End:
|