383 lines
10 KiB
C
383 lines
10 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_EXPOSE_STREAM_IMPLEMENTATION)
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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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// Helper functions for istream<>::sentry constructor.
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template <class _CharT, class _Traits>
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bool
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_M_init(basic_ostream<_CharT, _Traits>& __str) {
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if (__str.good()) {
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// boris : check if this is needed !
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if (!__str.rdbuf())
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__str.setstate(ios_base::badbit);
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if (__str.tie())
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__str.tie()->flush();
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return __str.good();
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} else
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return false;
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}
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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>
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::basic_ostream(basic_streambuf<_CharT, _Traits>* __buf)
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: basic_ios<_CharT, _Traits>()
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{
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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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{
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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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{
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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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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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{
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bool __any_inserted = false;
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while (true) {
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int_type __c;
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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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return __any_inserted;
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}
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if (this->_S_eof(__c))
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return __any_inserted;
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else {
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int_type __tmp;
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_STLP_TRY {
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__tmp = __to->sputc(__c);
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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 (this->_S_eof(__tmp)) {
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_STLP_TRY {
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/* __tmp = */ __from->sputbackc(__c);
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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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}
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else
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__any_inserted = true;
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}
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}
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}
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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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_M_put_num(basic_ostream<_CharT, _Traits>& __os, _Number __x)
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{
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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(
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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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# if defined (_STLP_USE_TEMPLATE_EXPORT) && defined (__BUILDING_STLPORT)
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_STLP_EXPORT_TEMPLATE _STLP_DECLSPEC basic_ostream<char, char_traits<char> >& _STLP_CALL
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_M_put_num(basic_ostream<char, char_traits<char> >&, unsigned long);
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_STLP_EXPORT_TEMPLATE _STLP_DECLSPEC basic_ostream<char, char_traits<char> >& _STLP_CALL
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_M_put_num(basic_ostream<char, char_traits<char> >&, long);
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# if defined (_STLP_LONG_LONG)
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_STLP_EXPORT_TEMPLATE _STLP_DECLSPEC basic_ostream<char, char_traits<char> >& _STLP_CALL
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_M_put_num(basic_ostream<char, char_traits<char> >&, unsigned _STLP_LONG_LONG);
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_STLP_EXPORT_TEMPLATE _STLP_DECLSPEC basic_ostream<char, char_traits<char> >& _STLP_CALL
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_M_put_num(basic_ostream<char, char_traits<char> >&, _STLP_LONG_LONG );
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# endif
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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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{
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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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{
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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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{
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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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{
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basic_streambuf<_CharT, _Traits>* __buf = this->rdbuf();
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for ( ; __n > 0 ; --__n)
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if (this->_S_eof(__buf->sputc(this->widen(*__s++))))
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return false;
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return true;
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}
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// Unformatted output of a single character.
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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>::put(char_type __c)
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{
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sentry __sentry(*this);
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bool __failed = true;
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if (__sentry) {
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_STLP_TRY {
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__failed = this->_S_eof(this->rdbuf()->sputc(__c));
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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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}
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if (__failed)
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this->setstate(ios_base::badbit);
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return *this;
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}
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// Unformatted output of a single character.
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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>::write(const char_type* __s, streamsize __n)
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{
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sentry __sentry(*this);
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bool __failed = true;
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if (__sentry) {
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_STLP_TRY {
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__failed = this->rdbuf()->sputn(__s, __n) != __n;
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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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}
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if (__failed)
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this->setstate(ios_base::badbit);
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return *this;
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}
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_STLP_END_NAMESPACE
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#endif /* defined (_STLP_EXPOSE_STREAM_IMPLEMENTATION) */
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#endif /* _STLP_OSTREAM_C */
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