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Add STLport 5.1.4
[polintos/scott/priv.git] / lib / c++ / stlport / iostream.cpp
diff --git a/lib/c++/stlport/iostream.cpp b/lib/c++/stlport/iostream.cpp
new file mode 100644 (file)
index 0000000..84195a0
--- /dev/null
@@ -0,0 +1,399 @@
+/*
+ * 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 <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
+
+#if defined (__BORLANDC__) && ! defined (_STLP_USE_GLIBC)
+using _STLP_VENDOR_CSTD::_streams;
+#endif
+
+// 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);
+
+#  ifdef _STLP_REDIRECT_STDSTREAMS
+_STLP_DECLSPEC ofstream cout;
+_STLP_DECLSPEC ofstream cerr;
+_STLP_DECLSPEC ofstream clog;
+#  else
+_STLP_DECLSPEC ostream cout(0);
+_STLP_DECLSPEC ostream cerr(0);
+_STLP_DECLSPEC ostream clog(0);
+#  endif
+
+#  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_was_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 filebuf*
+_Stl_create_filebuf(FILE* f, ios_base::openmode mode ) {
+  basic_filebuf<char, char_traits<char> >* result =
+    new basic_filebuf<char, char_traits<char> >();
+
+  _STLP_TRY {
+    result->_M_open(_FILE_fd(f), mode);
+  }
+  _STLP_CATCH_ALL {}
+
+  if (!result->is_open()) {
+    delete result;
+    result = 0;
+  }
+  return result;
+}
+
+#if !defined (_STLP_NO_WCHAR_T)
+static wfilebuf*
+_Stl_create_wfilebuf(FILE* f, ios_base::openmode mode) {
+  basic_filebuf<wchar_t, char_traits<wchar_t> >* result =
+    new basic_filebuf<wchar_t, char_traits<wchar_t> >();
+
+  _STLP_TRY {
+    result->_M_open(_FILE_fd(f), mode);
+  }
+  _STLP_CATCH_ALL {}
+
+  if (!result->is_open()) {
+    delete result;
+    result = 0;
+  }
+  return result;
+}
+#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
+  _STLP_TRY {
+    istream* ptr_cin  = new(static_cast<void*>(&cin))  istream(0);
+#  ifdef _STLP_REDIRECT_STDSTREAMS
+    ofstream* ptr_cout = new(static_cast<void*>(&cout)) ofstream;
+    ofstream* ptr_cerr = new(static_cast<void*>(&cerr)) ofstream;
+    ofstream* ptr_clog = new(static_cast<void*>(&clog)) ofstream;
+
+    // Initialize the four narrow stream objects.
+    if (_S_was_synced) {
+      ptr_cin->init(new stdio_istreambuf(stdin));
+      ptr_cout->open("/stdout.txt", ios::out);
+      ptr_cerr->open("/stderr.txt", ios::out);
+      ptr_clog->open("/stdlog.txt", ios::out);
+    } else {
+      ptr_cin->init(_Stl_create_filebuf(stdin, ios_base::in));
+      ptr_cin->init(_Stl_create_filebuf(stdout, ios_base::out));
+      ptr_cin->init(_Stl_create_filebuf(stderr, ios_base::out));
+      ptr_cin->init(_Stl_create_filebuf(stderr, ios_base::out));
+    }
+    ptr_cin->tie(ptr_cout);
+    ptr_cerr->setf(ios_base::unitbuf);
+#  else
+    ostream* ptr_cout = new(static_cast<void*>(&cout)) ostream(0);
+    ostream* ptr_cerr = new(static_cast<void*>(&cerr)) ostream(0);
+    ostream* ptr_clog = new(static_cast<void*>(&clog)) ostream(0);
+
+    // Initialize the four narrow stream objects.
+    if (_S_was_synced) {
+      ptr_cin->init(new stdio_istreambuf(stdin));
+      ptr_cout->init(new stdio_ostreambuf(stdout));
+      ptr_cerr->init(new stdio_ostreambuf(stderr));
+      ptr_clog->init(new stdio_ostreambuf(stderr));
+    } else {
+      ptr_cin->init(_Stl_create_filebuf(stdin, ios_base::in));
+      ptr_cin->init(_Stl_create_filebuf(stdout, ios_base::out));
+      ptr_cin->init(_Stl_create_filebuf(stderr, ios_base::out));
+      ptr_cin->init(_Stl_create_filebuf(stderr, ios_base::out));
+    }
+    ptr_cin->tie(ptr_cout);
+    ptr_cerr->setf(ios_base::unitbuf);
+#  endif /* _STLP_REDIRECT_STDSTREAMS */
+
+#  ifndef _STLP_NO_WCHAR_T
+    // Run constructors for the four wide stream objects.
+    wistream* ptr_wcin  = new(&wcin)  wistream(0);
+    wostream* ptr_wcout = new(&wcout) wostream(0);
+    wostream* ptr_wcerr = new(&wcerr) wostream(0);
+    wostream* ptr_wclog = new(&wclog) wostream(0);
+
+    wfilebuf* win  = _Stl_create_wfilebuf(stdin, ios_base::in);
+    wfilebuf* wout = _Stl_create_wfilebuf(stdout, ios_base::out);
+    wfilebuf* werr = _Stl_create_wfilebuf(stderr, ios_base::out);
+    wfilebuf* wlog = _Stl_create_wfilebuf(stderr, ios_base::out);
+
+    ptr_wcin->init(win);
+    ptr_wcout->init(wout);
+    ptr_wcerr->init(werr);
+    ptr_wclog->init(wlog);
+
+    ptr_wcin->tie(ptr_wcout);
+    ptr_wcerr->setf(ios_base::unitbuf);
+
+#  endif /*  _STLP_NO_WCHAR_T */
+  }
+
+  _STLP_CATCH_ALL {}
+}
+
+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;
+
+#ifndef _STLP_NO_WCHAR_T
+  wistream* ptr_wcin  = &wcin;
+  wostream* ptr_wcout = &wcout;
+  wostream* ptr_wcerr = &wcerr;
+  wostream* ptr_wclog = &wclog;
+#endif
+
+  // 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
+  // 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
+
+  bool was_synced =  _S_was_synced;
+
+  // if by any chance we got there before std streams initialization,
+  // just set the sync flag and exit
+  if (Init::_S_count == 0) {
+    _S_was_synced = sync;
+    return was_synced;
+  }
+
+  istream* ptr_cin  = &cin;
+  ostream* ptr_cout = &cout;
+  ostream* ptr_cerr = &cerr;
+  ostream* ptr_clog = &clog;
+
+  streambuf* old_cin  = ptr_cin->rdbuf();
+  streambuf* old_cout = ptr_cout->rdbuf();
+  streambuf* old_cerr = ptr_cerr->rdbuf();
+  streambuf* old_clog = ptr_clog->rdbuf();
+
+  streambuf* new_cin  = 0;
+  streambuf* new_cout = 0;
+  streambuf* new_cerr = 0;
+  streambuf* new_clog = 0;
+
+  _STLP_TRY {
+    if (sync && !was_synced) {
+      new_cin  = new stdio_istreambuf(stdin);
+      new_cout = new stdio_ostreambuf(stdout);
+      new_cerr = new stdio_ostreambuf(stderr);
+      new_clog = new stdio_ostreambuf(stderr);
+    }
+    else if (!sync && was_synced) {
+      new_cin  = _Stl_create_filebuf(stdin, ios_base::in);
+      new_cout = _Stl_create_filebuf(stdout, ios_base::out);
+      new_cerr = _Stl_create_filebuf(stderr, ios_base::out);
+      new_clog = _Stl_create_filebuf(stderr, ios_base::out);
+    }
+  }
+  _STLP_CATCH_ALL {}
+
+  if (new_cin && new_cout && new_cerr && new_clog) {
+    ptr_cin->rdbuf(new_cin);
+    ptr_cout->rdbuf(new_cout);
+    ptr_cerr->rdbuf(new_cerr);
+    ptr_clog->rdbuf(new_clog);
+
+    delete old_cin;
+    delete old_cout;
+    delete old_cerr;
+    delete old_clog;
+  }
+  else {
+    delete new_cin;
+    delete new_cout;
+    delete new_cerr;
+    delete new_clog;
+  }
+
+  return was_synced;
+}
+
+_STLP_END_NAMESPACE
+
+// Local Variables:
+// mode:C++
+// End: