The Tor Browser: build/stlport/src/iostream.cpp@6474c204b198 (annotated)

build/stlport/src/iostream.cpp@6474c204b198 (annotated)

build/stlport/src/iostream.cpp

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /*
  * Copyright (c) 1999
  * Silicon Graphics Computer Systems, Inc.
  *
  * Copyright (c) 1999
  * Boris Fomitchev
  *
  * This material is provided "as is", with absolutely no warranty expressed
  * or implied. Any use is at your own risk.
  *
  * Permission to use or copy this software for any purpose is hereby granted
  * without fee, provided the above notices are retained on all copies.
  * Permission to modify the code and to distribute modified code is granted,
  * provided the above notices are retained, and a notice that the code was
  * modified is included with the above copyright notice.
  *
  */
 #include "stlport_prefix.h"
 #include <memory>
 #include <istream>
 #include <fstream>
 #if defined (_STLP_MSVC) || defined (__MWERKS__) || defined (__ICL) || defined (__ISCPP__)
 #  define _STLP_USE_NOT_INIT_SEGMENT
 #  include <iostream>
 #endif
 #include "stdio_streambuf.h"
 #include "aligned_buffer.h"
 #include "_stdio_file.h"
 #include "c_locale.h"
 // boris : note this is repeated in <iostream>
 #ifndef _STLP_USE_NAMESPACES
 // in case of SGI iostreams, we have to rename our streams not to clash with those
 // provided in native lib
 #  define cin _STLP_cin
 #  define cout _STLP_cout
 #  define cerr _STLP_cerr
 #  define clog _STLP_clog
 #endif
 _STLP_BEGIN_NAMESPACE
 // This file handles iostream initialization.  It is inherently
 // nonportable, since the C++ language definition provides no mechanism
 // for controlling order of initialization of nonlocal objects.
 // Initialization has three parts, which must be performed in the following
 // order:
 //  (1) Initialize the locale system
 //  (2) Call the constructors for the eight global stream objects.
 //  (3) Create streambufs for the global stream objects, and initialize
 //      the stream objects by calling the init() member function.
 #if defined (_STLP_USE_NOT_INIT_SEGMENT)
 // Definitions of the eight global I/O objects that are declared in
 // <iostream>. For some compilers we use pragmas to put the global I/O
 // objects into an initialization segment that will not
 // be executed. We then explicitly invoke the constructors
 // with placement new in ios_base::_S_initialize()
 #  if defined (__MWERKS__)
 #    pragma suppress_init_code on
 #  else
 #    pragma init_seg("STLPORT_NO_INIT")
 #  endif
 _STLP_DECLSPEC istream cin(0);
 _STLP_DECLSPEC ostream cout(0);
 _STLP_DECLSPEC ostream cerr(0);
 _STLP_DECLSPEC ostream clog(0);
 #  ifndef _STLP_NO_WCHAR_T
 _STLP_DECLSPEC wistream wcin(0);
 _STLP_DECLSPEC wostream wcout(0);
 _STLP_DECLSPEC wostream wcerr(0);
 _STLP_DECLSPEC wostream wclog(0);
 #  endif
 #  if defined (__MWERKS__)
 #    pragma suppress_init_code off
 #  endif
 #else
 // Definitions of the eight global I/O objects that are declared in
 // <iostream>.  Disgusting hack: we deliberately define them with the
 // wrong types so that the constructors don't get run automatically.
 // We need special tricks to make sure that these objects are struct-
 // aligned rather than byte-aligned.
 // This is not portable.  Declaring a variable with different types in
 // two translations units is "undefined", according to the C++ standard.
 // Most compilers, however, silently accept this instead of diagnosing
 // it as an error.
 #  ifndef __DMC__
 _STLP_DECLSPEC _Stl_aligned_buffer<istream> cin;
 _STLP_DECLSPEC _Stl_aligned_buffer<ostream> cout;
 _STLP_DECLSPEC _Stl_aligned_buffer<ostream> cerr;
 _STLP_DECLSPEC _Stl_aligned_buffer<ostream> clog;
 #  else
 _Stl_aligned_buffer<istream> cin;
 _Stl_aligned_buffer<ostream> cout;
 _Stl_aligned_buffer<ostream> cerr;
 _Stl_aligned_buffer<ostream> clog;
 #    pragma alias("?cin@std@@3V?$basic_istream@std@DV?$char_traits@std@D@1@@1@A", "?cin@std@@3T?$_Stl_aligned_buffer@std@V?$basic_istream@std@DV?$char_traits@std@D@1@@1@@1@A")
 #    pragma alias("?cout@std@@3V?$basic_ostream@std@DV?$char_traits@std@D@1@@1@A", "?cout@std@@3T?$_Stl_aligned_buffer@std@V?$basic_ostream@std@DV?$char_traits@std@D@1@@1@@1@A")
 #    pragma alias("?cerr@std@@3V?$basic_ostream@std@DV?$char_traits@std@D@1@@1@A", "?cerr@std@@3T?$_Stl_aligned_buffer@std@V?$basic_ostream@std@DV?$char_traits@std@D@1@@1@@1@A")
 #    pragma alias("?clog@std@@3V?$basic_ostream@std@DV?$char_traits@std@D@1@@1@A", "?clog@std@@3T?$_Stl_aligned_buffer@std@V?$basic_ostream@std@DV?$char_traits@std@D@1@@1@@1@A")
 #  endif
 #  ifndef _STLP_NO_WCHAR_T
 #    ifndef __DMC__
 _STLP_DECLSPEC _Stl_aligned_buffer<wistream> wcin;
 _STLP_DECLSPEC _Stl_aligned_buffer<wostream> wcout;
 _STLP_DECLSPEC _Stl_aligned_buffer<wostream> wcerr;
 _STLP_DECLSPEC _Stl_aligned_buffer<wostream> wclog;
 #    else
 _Stl_aligned_buffer<wistream> wcin;
 _Stl_aligned_buffer<wostream> wcout;
 _Stl_aligned_buffer<wostream> wcerr;
 _Stl_aligned_buffer<wostream> wclog;
 #      pragma alias("?wcin@std@@3V?$basic_istream@std@_YV?$char_traits@std@_Y@1@@1@A", "?wcin@std@@3T?$_Stl_aligned_buffer@std@V?$basic_istream@std@_YV?$char_traits@std@_Y@1@@1@@1@A")
 #      pragma alias("?wcout@std@@3V?$basic_ostream@std@_YV?$char_traits@std@_Y@1@@1@A", "?wcout@std@@3T?$_Stl_aligned_buffer@std@V?$basic_ostream@std@_YV?$char_traits@std@_Y@1@@1@@1@A")
 #      pragma alias("?wcerr@std@@3V?$basic_ostream@std@_YV?$char_traits@std@_Y@1@@1@A", "?wcerr@std@@3T?$_Stl_aligned_buffer@std@V?$basic_ostream@std@_YV?$char_traits@std@_Y@1@@1@@1@A")
 #      pragma alias("?wclog@std@@3V?$basic_ostream@std@_YV?$char_traits@std@_Y@1@@1@A", "?wclog@std@@3T?$_Stl_aligned_buffer@std@V?$basic_ostream@std@_YV?$char_traits@std@_Y@1@@1@@1@A")
 #    endif
 #  endif
 #endif /* STL_MSVC || __MWERKS__ */
 // Member functions from class ios_base and ios_base::Init
 long ios_base::Init::_S_count = 0;
 // by default, those are synced
 bool ios_base::_S_is_synced = true;
 ios_base::Init::Init() {
   if (_S_count++ == 0) {
     _Locale_init();
     ios_base::_S_initialize();
     _Filebuf_base::_S_initialize();
   }
 }
 ios_base::Init::~Init() {
   if (--_S_count == 0) {
     ios_base::_S_uninitialize();
     _Locale_final();
   }
 }
 static int _Stl_extract_open_param(FILE* f)
 { return _FILE_fd(f); }
 #ifdef _STLP_REDIRECT_STDSTREAMS
 static const char* _Stl_extract_open_param(const char* name)
 { return name; }
 #endif
 template <class _Tp>
 static filebuf*
 _Stl_create_filebuf(_Tp x, ios_base::openmode mode ) {
   auto_ptr<filebuf> result(new basic_filebuf<char, char_traits<char> >());
   result->open(_Stl_extract_open_param(x), mode);
   if (result->is_open())
     return result.release();
   return 0;
 }
 #if !defined (_STLP_NO_WCHAR_T)
 static wfilebuf*
 _Stl_create_wfilebuf(FILE* f, ios_base::openmode mode) {
   auto_ptr<wfilebuf> result(new basic_filebuf<wchar_t, char_traits<wchar_t> >());
   result->_M_open(_FILE_fd(f), mode);
   if (result->is_open())
     return result.release();
   return 0;
 }
 #endif
 void  _STLP_CALL ios_base::_S_initialize() {
 #if !defined (_STLP_HAS_NO_NAMESPACES) && !defined (_STLP_DONT_USE_PRIV_NAMESPACE)
   using _STLP_PRIV stdio_istreambuf;
   using _STLP_PRIV stdio_ostreambuf;
 #endif
   auto_ptr<streambuf> cin_buf;
   auto_ptr<streambuf> cout_buf;
   auto_ptr<streambuf> cerr_buf;
   auto_ptr<streambuf> clog_buf;
   if (_S_is_synced)
     cin_buf.reset(new stdio_istreambuf(stdin));
   else
     cin_buf.reset(_Stl_create_filebuf(stdin, ios_base::in));
   if (_S_is_synced) {
 #ifdef _STLP_REDIRECT_STDSTREAMS
     cout_buf.reset(_Stl_create_filebuf("/stdout.txt", ios::out));
     cerr_buf.reset(_Stl_create_filebuf("/stderr.txt", ios::out));
     clog_buf.reset(_Stl_create_filebuf("/stdlog.txt", ios::out));
 #else
     cout_buf.reset(new stdio_ostreambuf(stdout));
     cerr_buf.reset(new stdio_ostreambuf(stderr));
     clog_buf.reset(new stdio_ostreambuf(stderr));
 #endif
   }
   else {
     cout_buf.reset(_Stl_create_filebuf(stdout, ios_base::out));
     cerr_buf.reset(_Stl_create_filebuf(stderr, ios_base::out));
     clog_buf.reset(_Stl_create_filebuf(stderr, ios_base::out));
   }
   istream* ptr_cin  = new(&cin)  istream(cin_buf.get()); cin_buf.release();
   ostream* ptr_cout = new(&cout) ostream(cout_buf.get()); cout_buf.release();
   ostream* ptr_cerr = new(&cerr) ostream(cerr_buf.get()); cerr_buf.release();
   /*ostream* ptr_clog = */ new(&clog) ostream(clog_buf.get()); clog_buf.release();
   ptr_cin->tie(ptr_cout);
   ptr_cerr->setf(ios_base::unitbuf);
 #ifndef _STLP_NO_WCHAR_T
   auto_ptr<wfilebuf> win(_Stl_create_wfilebuf(stdin, ios_base::in));
   auto_ptr<wfilebuf> wout(_Stl_create_wfilebuf(stdout, ios_base::out));
   auto_ptr<wfilebuf> werr(_Stl_create_wfilebuf(stderr, ios_base::out));
   auto_ptr<wfilebuf> wlog(_Stl_create_wfilebuf(stderr, ios_base::out));
   // Run constructors for the four wide stream objects.
   wistream* ptr_wcin  = new(&wcin)  wistream(win.get()); win.release();
   wostream* ptr_wcout = new(&wcout) wostream(wout.get()); wout.release();
   wostream* ptr_wcerr = new(&wcerr) wostream(werr.get()); werr.release();
   /*wostream* ptr_wclog = */ new(&wclog) wostream(wlog.get()); wlog.release();
   ptr_wcin->tie(ptr_wcout);
   ptr_wcerr->setf(ios_base::unitbuf);
 #endif
 }
 void _STLP_CALL ios_base::_S_uninitialize() {
   // Note that destroying output streambufs flushes the buffers.
   istream* ptr_cin  = &cin;
   ostream* ptr_cout = &cout;
   ostream* ptr_cerr = &cerr;
   ostream* ptr_clog = &clog;
   // We don't want any exceptions being thrown here
   ptr_cin->exceptions(0);
   ptr_cout->exceptions(0);
   ptr_cerr->exceptions(0);
   ptr_clog->exceptions(0);
   delete ptr_cin->rdbuf(0);
   delete ptr_cout->rdbuf(0);
   delete ptr_cerr->rdbuf(0);
   delete ptr_clog->rdbuf(0);
   _Destroy(ptr_cin);
   _Destroy(ptr_cout);
   _Destroy(ptr_cerr);
   _Destroy(ptr_clog);
 #ifndef _STLP_NO_WCHAR_T
   wistream* ptr_wcin  = &wcin;
   wostream* ptr_wcout = &wcout;
   wostream* ptr_wcerr = &wcerr;
   wostream* ptr_wclog = &wclog;
   // We don't want any exceptions being thrown here
   ptr_wcin->exceptions(0);
   ptr_wcout->exceptions(0);
   ptr_wcerr->exceptions(0);
   ptr_wclog->exceptions(0);
   delete ptr_wcin->rdbuf(0);
   delete ptr_wcout->rdbuf(0);
   delete ptr_wcerr->rdbuf(0);
   delete ptr_wclog->rdbuf(0);
   _Destroy(ptr_wcin);
   _Destroy(ptr_wcout);
   _Destroy(ptr_wcerr);
   _Destroy(ptr_wclog);
 #endif
 }
 bool _STLP_CALL ios_base::sync_with_stdio(bool sync) {
 #  if !defined (_STLP_HAS_NO_NAMESPACES) && !defined (_STLP_DONT_USE_PRIV_NAMESPACE)
   using _STLP_PRIV stdio_istreambuf;
   using _STLP_PRIV stdio_ostreambuf;
 #  endif
   if (sync == _S_is_synced) return sync;
   // if by any chance we got there before std streams initialization,
   // just set the sync flag and exit
   if (Init::_S_count == 0) {
     _S_is_synced = sync;
     return sync;
   }
   auto_ptr<streambuf> cin_buf;
   auto_ptr<streambuf> cout_buf;
   auto_ptr<streambuf> cerr_buf;
   auto_ptr<streambuf> clog_buf;
   if (sync)
     cin_buf.reset(new stdio_istreambuf(stdin));
   else
     cin_buf.reset(_Stl_create_filebuf(stdin, ios_base::in));
   if (sync) {
 #ifdef _STLP_REDIRECT_STDSTREAMS
     cout_buf.reset(_Stl_create_filebuf("/stdout.txt", ios::out));
     cerr_buf.reset(_Stl_create_filebuf("/stderr.txt", ios::out));
     clog_buf.reset(_Stl_create_filebuf("/stdlog.txt", ios::out));
 #else
     cout_buf.reset(new stdio_ostreambuf(stdout));
     cerr_buf.reset(new stdio_ostreambuf(stderr));
     clog_buf.reset(new stdio_ostreambuf(stderr));
 #endif
   }
   else {
     cout_buf.reset(_Stl_create_filebuf(stdout, ios_base::out));
     cerr_buf.reset(_Stl_create_filebuf(stderr, ios_base::out));
     clog_buf.reset(_Stl_create_filebuf(stderr, ios_base::out));
   }
   if (cin_buf.get() != 0 && cout_buf.get() != 0 && cerr_buf.get() != 0 && clog_buf.get() != 0) {
     // When streambuf passed to rdbuf is not null, rdbuf is exception safe:
     delete (&cin)->rdbuf(cin_buf.release());
     delete (&cout)->rdbuf(cout_buf.release());
     delete (&cerr)->rdbuf(cerr_buf.release());
     delete (&clog)->rdbuf(clog_buf.release());
     _S_is_synced = sync;
   }
   return _S_is_synced;
 }
 _STLP_END_NAMESPACE
 // Local Variables:
 // mode:C++
 // End:

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build/stlport/src/iostream.cpp@6474c204b198 (annotated)

build/stlport/src/iostream.cpp