--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/stdcpp/src/fstream.cpp Tue Feb 02 02:01:42 2010 +0200
@@ -0,0 +1,1201 @@
+/*
+ * © Portions copyright (c) 2006-2007 Nokia Corporation. All rights reserved.
+ *
+ * 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"
+
+# if defined (__SUNPPRO_CC) && !defined (_STLP_NO_NEW_C_HEADERS)
+# include <time.h>
+// For sunpro, it chokes if time.h is included through stat.h
+# endif
+
+#include <fstream>
+
+
+#ifdef __CYGWIN__
+# define __int64 long long
+#endif
+
+#if defined (_STLP_USE_UNIX_IO)
+extern "C" {
+// open/close/read/write
+# include <sys/stat.h> // For stat
+#if !defined (_CRAY) && ! defined (__EMX__)
+# include <sys/mman.h> // For mmap
+#endif
+
+// on HP-UX 11, this one contradicts with pthread.h on pthread_atfork, unless we unset this
+# if defined (__hpux) && defined (__GNUC__)
+# undef _INCLUDE_POSIX1C_SOURCE
+# endif
+
+# include <unistd.h>
+# include <fcntl.h>
+}
+# ifdef __APPLE__
+# include <sys/sysctl.h>
+# endif
+#elif defined (_STLP_USE_WIN32_IO)
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+
+# ifdef __BORLANDC__
+# if (__BORLANDC__ > 0x530)
+# include <cfcntl.h> // For _O_RDONLY, etc
+# else
+# include <fcntl.h> // For _O_RDONLY, etc
+# endif
+# include <sys/stat.h> // For _fstat
+# elif !defined(_STLP_WINCE)
+# include <io.h> // For _get_osfhandle
+# include <fcntl.h> // For _O_RDONLY, etc
+# include <sys/stat.h> // For _fstat
+# endif
+
+# define _TEXTBUF_SIZE 0x1000
+#elif defined (_STLP_USE_UNIX_EMULATION_IO)
+# if defined( __MSL__ )
+# include <unistd.h>
+# else
+# include <io.h>
+# endif
+# include <fcntl.h>
+# include <sys/stat.h>
+
+#elif defined (_STLP_USE_STDIO_IO)
+# include <cstdio>
+
+# if !(defined(__MRC__) || defined(__SC__) || defined(__ISCPP__) )
+extern "C" {
+# include <sys/stat.h>
+}
+# endif
+# if defined( __MSL__ )
+# include <unix.h>
+# endif
+# if defined(__ISCPP__)
+# include <c_locale_is/filestat.h>
+# endif
+# if (defined(__BEOS__) && defined(__INTEL__)) || defined(__SYMBIAN32__)
+# include <fcntl.h>
+# include <sys/stat.h> // For _fstat
+# define _S_IREAD S_IREAD
+# define _S_IWRITE S_IWRITE
+# define _S_IFREG S_IFREG
+# endif
+#else
+#error "Configure i/o !"
+#endif
+
+// map permission masks
+#if defined (_STLP_USE_UNIX_EMULATION_IO) || defined (_STLP_USE_STDIO_IO)
+# ifndef S_IRUSR
+# define S_IRUSR _S_IREAD
+# define S_IWUSR _S_IWRITE
+# define S_IRGRP _S_IREAD
+# define S_IWGRP _S_IWRITE
+# define S_IROTH _S_IREAD
+# define S_IWOTH _S_IWRITE
+# endif
+# ifndef O_RDONLY
+# define O_RDONLY _O_RDONLY
+# define O_WRONLY _O_WRONLY
+# define O_RDWR _O_RDWR
+# define O_APPEND _O_APPEND
+# define O_CREAT _O_CREAT
+# define O_TRUNC _O_TRUNC
+# define O_TEXT _O_TEXT
+# define O_BINARY _O_BINARY
+# endif
+
+# ifdef __MSL__
+# define _O_TEXT 0x0
+# if !defined( O_TEXT )
+# define O_TEXT _O_TEXT
+# endif
+# define _S_IFREG S_IFREG
+# define S_IREAD S_IRUSR
+# define S_IWRITE S_IWUSR
+# define S_IEXEC S_IXUSR
+# define _S_IWRITE S_IWRITE
+# define _S_IREAD S_IREAD
+# define _open open
+# define _lseek lseek
+# define _close close
+# define _read read
+# define _write write
+# endif
+
+#endif
+
+#ifndef O_ACCMODE
+# define O_ACCMODE (O_RDONLY|O_WRONLY|O_RDWR)
+#endif
+
+#include "fstream_impl.h"
+
+# ifdef _STLP_LONG_LONG
+# define ULL(x) ((unsigned _STLP_LONG_LONG)x)
+// # elif defined (_MSC_VER) || defined (__BORLANDC__)
+// # define ULL(x) ((__int64)x)
+# elif defined(__MRC__) || defined(__SC__) //*TY 02/25/2000 - added support for MPW compilers
+# include <Math64.h>
+# define ULL(x) (U64SetU(x))
+# elif defined(__ISCPP__)
+# include "uint64.h"
+# else
+# error "there should be some long long type on the system!"
+# endif
+
+__SGI_BEGIN_NAMESPACE
+
+#if !defined(__MSL__) && !defined(__MRC__) && !defined(__SC__) && !defined(_STLP_WINCE) //*TY 04/15/2000 - exclude mpw compilers also
+ios_base::openmode flag_to_openmode(int mode)
+{
+ ios_base::openmode ret = ios_base::in;
+
+ switch(mode & O_ACCMODE) {
+
+ case O_RDONLY:
+ ret = ios_base::in; break;
+
+ case O_WRONLY:
+ ret = ios_base::out; break;
+
+ case O_RDWR:
+ ret = ios_base::in | ios_base::out; break;
+
+ }
+
+ if (mode & O_APPEND)
+ ret |= ios_base::app;
+
+# ifdef _STLP_USE_WIN32_IO
+ if (mode & O_BINARY)
+ ret |= ios_base::binary;
+# endif // _MSC_VER
+
+ return ret;
+
+}
+# endif /* MSL */
+
+// Helper functions for _Filebuf_base.
+
+bool __is_regular_file(_STLP_fd fd) {
+
+#if defined (_STLP_UNIX)
+
+ struct stat buf;
+ return fstat(fd, &buf) == 0 && S_ISREG(buf.st_mode);
+
+#elif defined(__MRC__) || defined(__SC__) //*TY 02/25/2000 - added support for MPW compilers
+
+ #pragma unused(fd)
+ return true; // each file is a regular file under mac os, isn't it? (we don't have fstat())
+
+#elif defined(_STLP_USE_UNIX_EMULATION_IO) || defined (_STLP_USE_STDIO_IO)
+
+ struct stat buf;
+ return fstat(fd, &buf) == 0 && (buf.st_mode & _S_IFREG) != 0 ;
+
+# elif defined (_STLP_USE_WIN32_IO) && !defined(_STLP_WINCE)
+
+ return (GetFileType(fd) & ~FILE_TYPE_REMOTE) == FILE_TYPE_DISK;
+
+#else
+ (void)fd; // dwa 4/27/00 - suppress unused parameter warning
+ return false;
+
+#endif
+}
+
+// Number of characters in the file.
+streamoff __file_size(_STLP_fd fd) {
+ streamoff ret = 0;
+
+#if defined (_STLP_UNIX)
+
+ struct stat buf;
+ if(fstat(fd, &buf) == 0 && S_ISREG(buf.st_mode))
+ ret = buf.st_size > 0 ? buf.st_size : 0;
+
+#elif defined(__MRC__) || defined(__SC__) //*TY 02/25/2000 - added support for MPW compilers
+
+ #pragma unused(fd)
+
+#elif defined(_STLP_USE_UNIX_EMULATION_IO) || defined (_STLP_USE_STDIO_IO)
+
+ struct stat buf;
+ if(fstat(fd, &buf) == 0 && (buf.st_mode & _S_IFREG) != 0)
+ ret = buf.st_size > 0 ? buf.st_size : 0;
+
+# elif defined (_STLP_USE_WIN32_IO)
+
+ LARGE_INTEGER li;
+ li.LowPart = GetFileSize(fd, (unsigned long*) &li.HighPart);
+ if (li.LowPart == 0xFFFFFFFF && GetLastError() != NO_ERROR )
+ {
+ ret = 0;
+ } else
+ ret = li.QuadPart;
+
+# else
+ (void)fd; // dwa 4/27/00 - suppress unused parameter warning
+# endif
+
+ return ret;
+}
+
+
+// Visual C++ and Intel use this, but not Metrowerks
+// Also MinGW, msvcrt.dll (but not crtdll.dll) dependent version
+#if (!defined(__MSL__) && !defined(_STLP_WINCE) && defined( _MSC_VER ) && defined(_WIN32)) || \
+ (defined(__MINGW32__) && defined(__MSVCRT__) && !defined (__SYMBIAN32__))
+
+// fcntl(fileno, F_GETFL) for Microsoft library
+// 'semi-documented' defines:
+#define IOINFO_L2E 5
+#define IOINFO_ARRAY_ELTS (1 << IOINFO_L2E)
+#define _pioinfo(i) ( __pioinfo[(i) >> IOINFO_L2E] + \
+ ((i) & (IOINFO_ARRAY_ELTS - 1)) )
+#define FAPPEND 0x20 // O_APPEND flag
+#define FTEXT 0x80 // O_TEXT flag
+// end of 'semi-documented' defines
+
+// fbp : empirical
+#define F_WRITABLE 0x04
+
+// 'semi-documented' internal structure
+extern "C" {
+ struct ioinfo {
+ long osfhnd; // the real os HANDLE
+ char osfile; // file handle flags
+ char pipech; // pipe buffer
+# ifdef _MT
+ // multi-threaded locking
+ int lockinitflag;
+ CRITICAL_SECTION lock;
+# endif /* _MT */
+ };
+#ifdef __MINGW32__
+ __MINGW_IMPORT ioinfo * __pioinfo[];
+#else
+ extern _CRTIMP ioinfo * __pioinfo[];
+#endif
+
+} // extern "C"
+// end of 'semi-documented' declarations
+
+ios_base::openmode _get_osfflags(int fd, HANDLE oshandle) {
+ char dosflags = 0;
+
+ dosflags = _pioinfo(fd)->osfile;
+ // end of 'semi-documented' stuff
+ int mode = 0;
+
+ if (dosflags & FAPPEND)
+ mode |= O_APPEND;
+ if (dosflags & FTEXT)
+ mode |= O_TEXT;
+ else
+ mode |= O_BINARY;
+
+ // we have to guess
+# ifdef __macintosh
+ DWORD dummy, dummy2;
+ if (WriteFile(oshandle, &dummy2, 0, &dummy, 0))
+ mode |= O_RDWR;
+ else
+ mode |= O_RDONLY;
+# else
+ // on Windows, this seems to work...
+ if (dosflags & F_WRITABLE)
+ mode |= O_RDWR;
+ else
+ mode |= O_RDONLY;
+# endif
+
+ return flag_to_openmode(mode);
+}
+
+#elif defined(__DMC__)
+
+#define FHND_APPEND 0x04
+#define FHND_DEVICE 0x08
+#define FHND_TEXT 0x10
+
+extern "C" unsigned char __fhnd_info[_NFILE];
+
+ios_base::openmode _get_osfflags(int fd, HANDLE oshandle) {
+ int mode = 0;
+
+ if (__fhnd_info[fd] & FHND_APPEND)
+ mode |= O_APPEND;
+
+ if (__fhnd_info[fd] & FHND_TEXT == 0)
+ mode |= O_BINARY;
+
+ for (FILE *fp = &_iob[0]; fp < &_iob[_NFILE]; fp++)
+ {
+ if ((fileno(fp) == fd) && (fp->_flag & (_IOREAD | _IOWRT | _IORW)))
+ {
+ const int osflags = fp->_flag;
+
+ if ((osflags & _IOREAD) && !(osflags & _IOWRT) && !(osflags & _IORW))
+ mode |= O_RDONLY;
+ else if ((osflags & _IOWRT) && !(osflags & _IOREAD) && !(osflags & _IORW))
+ mode |= O_WRONLY;
+ else
+ mode |= O_RDWR;
+
+ break;
+ }
+ }
+
+ return flag_to_openmode(mode);
+}
+#endif // _MSC_VER
+
+__SGI_END_NAMESPACE
+
+// All version of Unix have mmap and lseek system calls. Some also have
+// longer versions of thos system calls to accommodate 64-bit offsets.
+// If we're on a Unix system, define some macros to encapsulate those
+// differences.
+#ifdef _STLP_USE_UNIX_IO
+# ifdef __sgi /* IRIX */
+# define LSEEK lseek64
+# define MMAP mmap64
+# else
+# define LSEEK lseek
+# define MMAP mmap
+# endif
+
+#ifndef MAP_FAILED /* MMAP failure return code */
+# define MAP_FAILED -1
+#endif
+
+#elif defined (_STLP_USE_UNIX_EMULATION_IO)
+# define LSEEK _lseek
+#endif
+
+#if defined(__LIBSTD_CPP_SYMBIAN32_WSD__) || defined(_STLP_LIBSTD_CPP_NO_STATIC_VAR_)
+#include "libstdcppwsd.h"
+# endif
+
+_STLP_BEGIN_NAMESPACE
+
+#if defined(__LIBSTD_CPP_SYMBIAN32_WSD__) || defined(_STLP_LIBSTD_CPP_NO_STATIC_VAR_)
+void filebuf_page_size_init()
+{
+ get_fstream_Filebuf_Base_GetPageSize() = 4096;
+}
+#else
+size_t
+_Filebuf_base::_M_page_size = 4096;
+#endif //__LIBSTD_CPP_SYMBIAN32_WSD__
+
+_STLP_EXP_DECLSPEC _Filebuf_base::_Filebuf_base()
+ : _M_file_id((_STLP_fd)-1),
+ _M_openmode(0),
+ _M_is_open(false),
+ _M_should_close(false)
+{
+#if defined(__LIBSTD_CPP_SYMBIAN32_WSD__) || defined(_STLP_LIBSTD_CPP_NO_STATIC_VAR_)
+ if (!get_fstream_Filebuf_Base_GetPageSize())
+#else
+ if (!_M_page_size)
+#endif //__SYMBIAN32__
+#if defined (_STLP_UNIX) && !defined(__DJGPP) && !defined(_CRAY)
+# if defined (__APPLE__)
+ {
+ int mib[2];
+ size_t pagesize, len;
+ mib[0] = CTL_HW;
+ mib[1] = HW_PAGESIZE;
+ len = sizeof(pagesize);
+ sysctl(mib, 2, &pagesize, &len, NULL, 0);
+ _M_page_size = pagesize;
+ }
+# elif defined(__DJGPP) && defined(_CRAY)
+ _M_page_size = BUFSIZ;
+# else
+#if defined(__LIBSTD_CPP_SYMBIAN32_WSD__) || defined(_STLP_LIBSTD_CPP_NO_STATIC_VAR_)
+ get_fstream_Filebuf_Base_GetPageSize() = sysconf(_SC_PAGESIZE);
+#else
+ _M_page_size = sysconf(_SC_PAGESIZE);
+#endif
+# endif
+# elif defined (_STLP_USE_WIN32_IO)
+ {
+ SYSTEM_INFO SystemInfo;
+ GetSystemInfo(&SystemInfo);
+ _M_page_size = SystemInfo.dwPageSize;
+ // might be .dwAllocationGranularity
+ }
+ // _M_CRLF_trans_buf = 0,
+ // _M_trans_buf_end=0,
+ _M_view_id = 0;
+#endif
+
+#if defined(__LIBSTD_CPP_SYMBIAN32_WSD__) || defined(_STLP_LIBSTD_CPP_NO_STATIC_VAR_)
+ if (get_fstream_Filebuf_Base_GetPageSize() <= 0 )
+ get_fstream_Filebuf_Base_GetPageSize() = 4096;
+#else
+ if (_M_page_size <=0 )
+ _M_page_size = 4096;
+#endif //__LIBSTD_CPP_SYMBIAN32_WSD__
+
+}
+
+
+// Return the size of the file. This is a wrapper for stat.
+// Returns zero if the size cannot be determined or is ill-defined.
+_STLP_EXP_DECLSPEC streamoff
+_Filebuf_base::_M_file_size()
+{
+ return _SgI::__file_size(_M_file_id);
+}
+
+_STLP_EXP_DECLSPEC bool _Filebuf_base::_M_open(const char* name, ios_base::openmode openmode,
+ long permission)
+{
+ _STLP_fd file_no;
+
+ if (_M_is_open)
+ return false;
+
+#if defined (_STLP_USE_UNIX_IO) || defined (_STLP_USE_UNIX_EMULATION_IO)
+
+ int flags = 0;
+
+ // Unix makes no distinction between text and binary files.
+ switch(openmode & (~ios_base::ate & ~ios_base::binary)) {
+ case ios_base::out:
+ case ios_base::out | ios_base::trunc:
+ flags = O_WRONLY | O_CREAT | O_TRUNC;
+ break;
+ case ios_base::out | ios_base::app:
+ flags = O_WRONLY | O_CREAT | O_APPEND;
+ break;
+ case ios_base::in:
+ flags = O_RDONLY;
+ permission = 0; // Irrelevant unless we're writing.
+ break;
+ case ios_base::in | ios_base::out:
+ flags = O_RDWR;
+ break;
+ case ios_base::in | ios_base::out | ios_base::trunc:
+ flags = O_RDWR | O_CREAT | O_TRUNC;
+ break;
+ default: // The above are the only combinations of
+ return false; // flags allowed by the C++ standard.
+ }
+
+# if defined (_STLP_USE_UNIX_EMULATION_IO)
+
+ if (openmode & ios_base::binary)
+ flags |= O_BINARY;
+ else
+ flags |= O_TEXT;
+
+ file_no = _open(name, flags, permission);
+
+# else
+
+ file_no = open(name, flags, permission);
+
+# endif /* _STLP_USE_UNIX_EMULATION_IO */
+
+ if (file_no < 0)
+ return false;
+
+ _M_is_open = true;
+
+ if (openmode & ios_base::ate)
+ if (LSEEK(file_no, 0, SEEK_END) == -1)
+ _M_is_open = false;
+
+#elif defined (_STLP_USE_STDIO_IO)
+ // use FILE-based i/o
+ const char* flags;
+
+ switch(openmode & (~ios_base::ate)) {
+ case ios_base::out:
+ case ios_base::out | ios_base::trunc:
+ flags = "w";
+ break;
+
+ case ios_base::out | ios_base::binary:
+ case ios_base::out | ios_base::trunc | ios_base::binary:
+ flags = "wb";
+ break;
+
+ case ios_base::out | ios_base::app:
+ flags = "a";
+ break;
+
+ case ios_base::out | ios_base::app | ios_base::binary:
+ flags = "ab";
+ break;
+
+ case ios_base::in:
+ flags = "r";
+ break;
+
+ case ios_base::in | ios_base::binary:
+ flags = "rb";
+ break;
+
+ case ios_base::in | ios_base::out:
+ flags = "r+";
+ break;
+
+ case ios_base::in | ios_base::out | ios_base::binary:
+ flags = "r+b";
+ break;
+
+
+ case ios_base::in | ios_base::out | ios_base::trunc:
+ flags = "w+";
+ break;
+
+ case ios_base::in | ios_base::out | ios_base::trunc | ios_base::binary:
+ flags = "w+b";
+ break;
+
+ default: // The above are the only combinations of
+ return false; // flags allowed by the C++ standard.
+ }
+
+ // fbp : TODO : set permissions !
+ (void)permission; // currently unused //*TY 02/26/2000 - added to suppress warning message
+ _M_file = fopen(name, flags);
+
+ if (_M_file) {
+ file_no = fileno(_M_file);
+ }
+ else
+ return false;
+
+ // unset buffering immediately
+ setbuf(_M_file, 0);
+
+ _M_is_open = true;
+
+ if (openmode & ios_base::ate)
+ if (fseek(_M_file, 0, SEEK_END) == -1)
+ _M_is_open = false;
+
+# elif defined (_STLP_USE_WIN32_IO)
+
+ DWORD dwDesiredAccess, dwShareMode, dwCreationDisposition;
+ bool doTruncate = false;
+
+ switch(openmode & (~ios_base::ate & ~ios_base::binary)) {
+ case ios_base::out:
+ case ios_base::out | ios_base::trunc:
+ dwDesiredAccess = GENERIC_WRITE;
+ dwShareMode = FILE_SHARE_READ | FILE_SHARE_WRITE;
+ dwCreationDisposition = OPEN_ALWAYS;
+ // boris : even though it is very non-intuitive, standard
+ // requires them both to behave same.
+ doTruncate = true;
+ break;
+
+ case ios_base::out | ios_base::app:
+ dwDesiredAccess = GENERIC_WRITE;
+ dwShareMode = FILE_SHARE_READ | FILE_SHARE_WRITE;
+ dwCreationDisposition = OPEN_ALWAYS;
+ break;
+ case ios_base::in:
+ dwDesiredAccess = GENERIC_READ;
+ dwShareMode = FILE_SHARE_READ | FILE_SHARE_WRITE;
+ dwCreationDisposition = OPEN_EXISTING;
+ permission = 0; // Irrelevant unless we're writing.
+ break;
+ case ios_base::in | ios_base::out:
+ dwDesiredAccess = GENERIC_READ | GENERIC_WRITE;
+ dwShareMode = FILE_SHARE_READ | FILE_SHARE_WRITE;
+ dwCreationDisposition = OPEN_EXISTING;
+ break;
+ case ios_base::in | ios_base::out | ios_base::trunc:
+ dwDesiredAccess = GENERIC_READ | GENERIC_WRITE;
+ dwShareMode = FILE_SHARE_READ | FILE_SHARE_WRITE;
+ dwCreationDisposition = OPEN_ALWAYS;
+ doTruncate = true;
+ break;
+ default: // The above are the only combinations of
+ return false; // flags allowed by the C++ standard.
+ }
+
+ #if defined(_STLP_WINCE)
+ file_no = CreateFile(__ASCIIToWide(name).c_str(),
+ #else
+ file_no = CreateFileA(name,
+ #endif
+ dwDesiredAccess, dwShareMode, 0,
+ dwCreationDisposition, permission, 0);
+
+ if ( file_no == INVALID_HANDLE_VALUE )
+ return false;
+
+ if ((doTruncate && SetEndOfFile(file_no) == 0) ||
+ ((openmode & ios_base::ate) && SetFilePointer(file_no, 0, NULL, FILE_END) == -1)) {
+ CloseHandle(file_no);
+ return false;
+ }
+
+ _M_is_open = true;
+
+#else
+# error "Port!"
+#endif /* __unix */
+
+
+ _M_file_id = file_no;
+ _M_should_close = _M_is_open;
+ _M_openmode = openmode;
+
+ if (_M_is_open)
+ _M_regular_file = _SgI::__is_regular_file(_M_file_id);
+
+ return _M_is_open;
+}
+
+
+_STLP_EXP_DECLSPEC bool _Filebuf_base::_M_open(const char* name, ios_base::openmode openmode)
+{
+ // This doesn't really grant everyone in the world read/write
+ // access. On Unix, file-creation system calls always clear
+ // bits that are set in the umask from the permissions flag.
+# ifdef _STLP_USE_WIN32_IO
+ return this->_M_open(name, openmode, FILE_ATTRIBUTE_NORMAL);
+# elif defined(__MRC__) || defined(__SC__) //*TY 02/26/2000 - added support for MPW compilers
+ return this->_M_open(name, openmode, 0);
+# else
+ return this->_M_open(name, openmode, S_IRUSR | S_IWUSR | S_IRGRP |
+ S_IWGRP | S_IROTH | S_IWOTH);
+# endif
+}
+
+
+// Associated the filebuf with a file descriptor pointing to an already-
+// open file. Mode is set to be consistent with the way that the file
+// was opened.
+bool _Filebuf_base::_M_open(int file_no, ios_base::openmode init_mode) {
+
+ if (_M_is_open || file_no < 0)
+ return false;
+
+# if defined (_STLP_UNIX)
+ (void)init_mode; // dwa 4/27/00 - suppress unused parameter warning
+ int mode ;
+ mode = fcntl(file_no, F_GETFL);
+
+ if (mode == -1)
+ return false;
+
+ _M_openmode = _SgI::flag_to_openmode(mode);
+
+# elif defined(__MRC__) || defined(__SC__) //*TY 02/26/2000 - added support for MPW compilers
+ (void)init_mode; // dwa 4/27/00 - suppress unused parameter warning
+ switch( _iob[file_no]._flag & (_IOREAD|_IOWRT|_IORW) )
+ {
+ case _IOREAD:
+ _M_openmode = ios_base::in; break;
+ case _IOWRT:
+ _M_openmode = ios_base::out; break;
+ case _IORW:
+ _M_openmode = ios_base::in | ios_base::out; break;
+ default:
+ return false;
+ }
+
+# elif defined (_STLP_USE_UNIX_EMULATION_IO) || defined (_STLP_USE_STDIO_IO)
+ (void)init_mode; // dwa 4/27/00 - suppress unused parameter warning
+ int mode ;
+ struct stat buf;
+ if (fstat(file_no, &buf) != 0)
+ return false;
+ mode = buf.st_mode;
+
+ switch(mode & (_S_IWRITE | _S_IREAD) ) {
+ case _S_IREAD:
+ _M_openmode = ios_base::in; break;
+ case _S_IWRITE:
+ _M_openmode = ios_base::out; break;
+ case (_S_IWRITE | _S_IREAD):
+ _M_openmode = ios_base::in | ios_base::out; break;
+ default:
+ return false;
+ }
+# elif (defined(_STLP_USE_WIN32_IO) && defined (_MSC_VER) && !defined(_STLP_WINCE)) || \
+ (defined(__MINGW32__) && defined(__MSVCRT__)) || defined(__DMC__)
+
+ if (_M_is_open || file_no == -1)
+ return false;
+
+ HANDLE oshandle = (HANDLE)_get_osfhandle(file_no);
+
+ if ((long)oshandle != -1)
+ file_no = (int)oshandle;
+ else
+ return false;
+
+ if (init_mode != ios_base::__default_mode)
+ _M_openmode = init_mode;
+ else
+ _M_openmode = _SgI::_get_osfflags(file_no, oshandle);
+
+# else
+ (void)init_mode; // dwa 4/27/00 - suppress unused parameter warning
+
+ // not available for the API
+ return false;
+
+# endif
+
+
+ _M_is_open = true;
+ _M_file_id = (_STLP_fd)file_no;
+ _M_should_close = false;
+ _M_regular_file = _SgI::__is_regular_file(_M_file_id);
+
+ return true;
+}
+
+_STLP_EXP_DECLSPEC bool _Filebuf_base::_M_close() {
+ if (!_M_is_open)
+ return false;
+
+ bool ok;
+
+ if (!_M_should_close)
+ ok = true;
+ else {
+
+# if defined (_STLP_USE_UNIX_IO)
+
+ ok = (close(_M_file_id) == 0);
+
+# elif defined (_STLP_USE_UNIX_EMULATION_IO)
+
+ ok = (_close(_M_file_id) == 0);
+
+# elif defined (_STLP_USE_STDIO_IO)
+
+ ok = (fclose(_M_file) == 0);
+
+# elif defined (_STLP_USE_WIN32_IO)
+
+ if ( _M_file_id != INVALID_HANDLE_VALUE ) {
+ ok = (CloseHandle(_M_file_id) != 0);
+ }
+ else {
+ ok = false;
+ }
+
+# else
+
+ ok = false;
+
+# endif /* _STLP_USE_UNIX_IO */
+ }
+
+ _M_is_open = _M_should_close = false;
+ _M_openmode = 0;
+ return ok;
+}
+
+
+# define _STLP_LF 10
+# define _STLP_CR 13
+# define _STLP_CTRLZ 26
+
+// Read up to n characters into a buffer. Return value is number of
+// characters read.
+_STLP_EXP_DECLSPEC ptrdiff_t _Filebuf_base::_M_read(char* buf, ptrdiff_t n) {
+# if defined (_STLP_USE_UNIX_IO)
+
+ return read(_M_file_id, buf, n);
+
+# elif defined (_STLP_USE_UNIX_EMULATION_IO)
+
+ return _read(_M_file_id, buf, n);
+
+# elif defined (_STLP_USE_WIN32_IO)
+
+ DWORD NumberOfBytesRead;
+ ReadFile(_M_file_id, (LPVOID)buf, (DWORD)n,
+ &NumberOfBytesRead, 0);
+
+ if ((! (_M_openmode & ios_base::binary)) && NumberOfBytesRead) {
+ // translate CR-LFs to LFs in the buffer
+ char * to = buf, * last = buf + NumberOfBytesRead - 1;
+ char * from;
+ for (from = buf; from <= last && * from != _STLP_CTRLZ; ++ from ) {
+ if (* from != _STLP_CR)
+ * to ++ = * from;
+ else { // found CR
+ if (from < last) { // not at buffer end
+ if (* (from + 1) != _STLP_LF)
+ * to ++ = _STLP_CR;
+ }
+ else { // last char is CR, peek for LF
+ char peek = ' ';
+ DWORD NumberOfBytesPeeked;
+ ReadFile(_M_file_id, (LPVOID)&peek,
+ 1, &NumberOfBytesPeeked, 0);
+ if (NumberOfBytesPeeked) {
+ if (peek != _STLP_LF) { //not a <CR><LF> combination
+ * to ++ = _STLP_CR;
+ SetFilePointer(_M_file_id,(LONG)-1,0,SEEK_CUR);
+ }
+ else {
+ //We ignore the complete combinaison:
+ SetFilePointer(_M_file_id,(LONG)-2,0,SEEK_CUR);
+ }
+ }
+ }
+ } // found CR
+ } // for
+ // seek back to TEXT end of file if hit CTRL-Z
+ if (from <= last) // terminated due to CTRLZ
+ SetFilePointer(_M_file_id,(LONG)((last+1) - from),0,SEEK_CUR);
+ NumberOfBytesRead = to - buf;
+ }
+ return (ptrdiff_t)NumberOfBytesRead;
+
+# elif defined (_STLP_USE_STDIO_IO)
+
+ return fread(buf, 1, n, _M_file);
+
+# else
+# error "Port!"
+# endif /* __unix */
+}
+
+// Write n characters from a buffer. Return value: true if we managed
+// to write the entire buffer, false if we didn't.
+_STLP_EXP_DECLSPEC bool _Filebuf_base::_M_write(char* buf, ptrdiff_t n) {
+
+ while (true) {
+ ptrdiff_t written;
+
+# if defined (_STLP_USE_UNIX_IO)
+
+ written = write(_M_file_id, buf, n);
+
+# elif defined (_STLP_USE_UNIX_EMULATION_IO)
+
+ written = _write(_M_file_id, buf, n);
+
+# elif defined (_STLP_USE_WIN32_IO)
+
+ // In append mode, every write does an implicit seek to the end
+ // of the file.
+ if (_M_openmode & ios_base::app)
+ _M_seek( 0, ios_base::end);
+
+ if (_M_openmode & ios_base::binary) {
+ // binary mode
+ DWORD NumberOfBytesWritten;
+ WriteFile(_M_file_id, (LPVOID)buf, (DWORD)n,
+ &NumberOfBytesWritten, 0);
+ written = (ptrdiff_t)NumberOfBytesWritten;
+ }
+ else {
+ char textbuf[_TEXTBUF_SIZE + 1]; // extra 1 in case LF at end
+ char * nextblock = buf, * ptrtextbuf = textbuf;
+ char * endtextbuf = textbuf + _TEXTBUF_SIZE;
+ char * endblock = buf + n;
+ ptrdiff_t nextblocksize = (min) (n, (ptrdiff_t)_TEXTBUF_SIZE);
+ char * nextlf;
+
+ while ( (nextblocksize > 0) &&
+ (nextlf = (char *)memchr(nextblock, _STLP_LF, nextblocksize)) != 0) {
+ ptrdiff_t linelength = nextlf - nextblock;
+ memcpy(ptrtextbuf, nextblock, linelength);
+ ptrtextbuf += linelength;
+ nextblock += (linelength + 1);
+ * ptrtextbuf ++ = _STLP_CR;
+ * ptrtextbuf ++ = _STLP_LF;
+ nextblocksize = (min) (ptrdiff_t(endblock - nextblock),
+ (max) (ptrdiff_t(0), ptrdiff_t(endtextbuf - ptrtextbuf)));
+ }
+ // write out what's left, > condition is here since for LF at the end ,
+ // endtextbuf may get < ptrtextbuf ...
+ if (nextblocksize > 0) {
+ memcpy(ptrtextbuf, nextblock, nextblocksize);
+ ptrtextbuf += nextblocksize;
+ nextblock += nextblocksize;
+ }
+ // now write out the translated buffer
+ char * writetextbuf = textbuf;
+ for (ptrdiff_t NumberOfBytesToWrite = ptrtextbuf - textbuf;
+ NumberOfBytesToWrite;) {
+ DWORD NumberOfBytesWritten;
+ WriteFile((HANDLE)_M_file_id, (LPVOID)writetextbuf,
+ NumberOfBytesToWrite, &NumberOfBytesWritten, 0);
+ if (NumberOfBytesWritten == NumberOfBytesToWrite)
+ break;
+ if (!NumberOfBytesWritten) // write shortfall
+ return false;
+ writetextbuf += NumberOfBytesWritten;
+ NumberOfBytesToWrite -= NumberOfBytesWritten;
+ }
+ // count non-translated characters
+ written = (nextblock - buf);
+ }
+
+# elif defined (_STLP_USE_STDIO_IO)
+
+ written = fwrite(buf, 1, n, _M_file);
+
+# else
+# error "Port!"
+# endif /* __unix */
+
+ if (n == written)
+ return true;
+ else if (written > 0 && written < n) {
+ n -= written;
+ buf += written;
+ }
+ else
+ return false;
+ }
+}
+
+
+#ifdef _STLP_USE_WIN32_IO
+# define STL_SEEK_SET FILE_BEGIN
+# define STL_SEEK_CUR FILE_CURRENT
+# define STL_SEEK_END FILE_END
+#else
+# define STL_SEEK_SET SEEK_SET
+# define STL_SEEK_CUR SEEK_CUR
+# define STL_SEEK_END SEEK_END
+#endif
+
+// Wrapper for lseek or the like.
+_STLP_EXP_DECLSPEC streamoff _Filebuf_base::_M_seek(streamoff offset, ios_base::seekdir dir)
+{
+ streamoff result = -1;
+
+ int whence;
+
+ switch(dir) {
+ case ios_base::beg:
+ if (offset < 0 /* || offset > _M_file_size() */ )
+ return streamoff(-1);
+ whence = STL_SEEK_SET;
+ break;
+ case ios_base::cur:
+ whence = STL_SEEK_CUR;
+ break;
+ case ios_base::end:
+ if (/* offset > 0 || */ -offset > _M_file_size() )
+ return streamoff(-1);
+ whence = STL_SEEK_END;
+ break;
+ default:
+ return streamoff(-1);
+ }
+
+#if defined (_STLP_USE_UNIX_IO) || defined (_STLP_USE_UNIX_EMULATION_IO)
+
+ result = LSEEK(_M_file_id, offset, whence);
+
+#elif defined (_STLP_USE_STDIO_IO)
+
+ result = fseek(_M_file, offset, whence);
+
+#elif defined (_STLP_USE_WIN32_IO)
+
+ LARGE_INTEGER li;
+ li.QuadPart = offset;
+ li.LowPart = SetFilePointer(_M_file_id, li.LowPart, &li.HighPart, whence);
+ if (li.LowPart == 0xFFFFFFFF && GetLastError() != NO_ERROR)
+ result = -1; // Error
+ else
+ result = li.QuadPart;
+
+#else
+# error "Port!"
+#endif
+
+ return result;
+}
+
+
+// Attempts to memory-map len bytes of the current file, starting
+// at position offset. Precondition: offset is a multiple of the
+// page size. Postcondition: return value is a null pointer if the
+// memory mapping failed. Otherwise the return value is a pointer to
+// the memory-mapped file and the file position is set to offset.
+_STLP_EXP_DECLSPEC void* _Filebuf_base::_M_mmap(streamoff offset, streamoff len) {
+ void* base;
+#if defined (_STLP_UNIX) && !defined(__DJGPP) && !defined(_CRAY)
+ base = MMAP(0, len, PROT_READ, MAP_PRIVATE, _M_file_id, offset);
+ if (base != (void*)MAP_FAILED) {
+ if (LSEEK(_M_file_id, offset + len, SEEK_SET) < 0) {
+ this->_M_unmap(base, len);
+ base = 0;
+ }
+ } else
+ base =0;
+
+#elif defined (_STLP_USE_WIN32_IO)
+
+ _M_view_id = CreateFileMapping(_M_file_id, (PSECURITY_ATTRIBUTES)0 ,
+ PAGE_READONLY, 0 /* len >> 32 */ ,
+ 0 /* len & 0xFFFFFFFF */ , // low-order DWORD of size
+ 0);
+
+ if (_M_view_id) {
+# if 0
+ printf("view %x created from file %x, error = %d, size = %d, map_offset = %d map_len = %d\n",
+ _M_view_id, _M_file_id, GetLastError(),
+ (int)cur_filesize, ULL(offset) & 0xffffffff, len);
+# endif
+
+ base = MapViewOfFile(_M_view_id, FILE_MAP_READ, ULL(offset)>>32,
+ ULL(offset) & 0xffffffff, len);
+ // check if mapping succeded and is usable
+ if (base ==0 || _M_seek(offset+len, ios_base::beg) < 0) {
+ this->_M_unmap(base, len);
+ base = 0;
+ }
+ } else
+ base = 0;
+#else
+ (void)len; //*TY 02/26/2000 - unused variables
+ (void)offset; //*TY 02/26/2000 -
+ base = 0;
+#endif
+ return base;
+}
+
+_STLP_EXP_DECLSPEC void _Filebuf_base::_M_unmap(void* base, streamoff len) {
+ // precondition : there is a valid mapping at the moment
+#if defined (_STLP_UNIX) && !defined(__DJGPP) && !defined(_CRAY)
+ munmap((char*)base, len);
+#elif defined (_STLP_USE_WIN32_IO)
+ if ( base != NULL )
+ UnmapViewOfFile(base);
+ // destroy view handle as well
+ if ( _M_view_id != NULL )
+ CloseHandle(_M_view_id);
+ _M_view_id = 0;
+ base = 0;
+#else
+ (void)len; //*TY 02/26/2000 - unused variables
+ (void)base; //*TY 02/26/2000 -
+#endif
+}
+
+_STLP_EXP_DECLSPEC int _STLP_CALL
+_Underflow<char, char_traits<char> >::_M_doit (basic_filebuf<char, char_traits<char> >* __this)
+{
+ if (!__this->_M_in_input_mode) {
+ if (!__this->_M_switch_to_input_mode())
+ return traits_type::eof();
+ }
+
+ else if (__this->_M_in_putback_mode) {
+ __this->_M_exit_putback_mode();
+ if (__this->gptr() != __this->egptr()) {
+ int_type __c = traits_type::to_int_type(*__this->gptr());
+ return __c;
+ }
+ }
+
+ // If it's a disk file, and if the internal and external character
+ // sequences are guaranteed to be identical, then try to use memory
+ // mapped I/O. Otherwise, revert to ordinary read.
+ if (__this->_M_base.__regular_file()
+ && __this->_M_always_noconv
+ && __this->_M_base._M_in_binary_mode()) {
+ // If we've mmapped part of the file already, then unmap it.
+ if (__this->_M_mmap_base)
+ __this->_M_base._M_unmap(__this->_M_mmap_base, __this->_M_mmap_len);
+ __this->_M_mmap_base = 0;
+ __this->_M_mmap_len = 0;
+
+ // Determine the position where we start mapping. It has to be
+ // a multiple of the page size.
+ streamoff __cur = __this->_M_base._M_seek(0, ios_base::cur);
+ streamoff __size = __this->_M_base._M_file_size();
+ if (__size > 0 && __cur >= 0 && __cur < __size) {
+ streamoff __offset = (__cur / __this->_M_base.__page_size())
+ * __this->_M_base.__page_size();
+ streamoff __remainder = __cur - __offset;
+
+ __this->_M_mmap_len = __size - __offset;
+
+ if (__this->_M_mmap_len > MMAP_CHUNK)
+ __this->_M_mmap_len = MMAP_CHUNK;
+
+ if ((__this->_M_mmap_base =
+ __this->_M_base._M_mmap(__offset, __this->_M_mmap_len)) != 0) {
+ __this->setg((char*) __this->_M_mmap_base,
+ (char*) __this->_M_mmap_base + __remainder,
+ (char*) __this->_M_mmap_base + __this->_M_mmap_len);
+ return traits_type::to_int_type(*__this->gptr());
+ }
+ } else /* size > 0 ... */ {
+ // There is nothing to map. We unmapped the file above, now zap pointers.
+ __this->_M_mmap_base = 0;
+ __this->_M_mmap_len = 0;
+ }
+ }
+
+ return __this->_M_underflow_aux();
+}
+
+
+//----------------------------------------------------------------------
+// Force instantiation of filebuf and fstream classes.
+#if !defined(_STLP_NO_FORCE_INSTANTIATE)
+
+template class basic_filebuf<char, char_traits<char> >;
+template class basic_ifstream<char, char_traits<char> >;
+template class basic_ofstream<char, char_traits<char> >;
+template class basic_fstream<char, char_traits<char> >;
+
+# ifndef _STLP_NO_WCHAR_T
+template class _Underflow<wchar_t, char_traits<wchar_t> >;
+template class basic_filebuf<wchar_t, char_traits<wchar_t> >;
+template class basic_ifstream<wchar_t, char_traits<wchar_t> >;
+template class basic_ofstream<wchar_t, char_traits<wchar_t> >;
+template class basic_fstream<wchar_t, char_traits<wchar_t> >;
+# endif /* _STLP_NO_WCHAR_T */
+
+#endif
+
+_STLP_END_NAMESPACE
+
+// Local Variables:
+// mode:C++
+// End:
+