+/////////////////////////////////////////////////////////////////////////////
+// Name: filefn.cpp
+// Purpose: File- and directory-related functions
+// Author: Julian Smart
+// Modified by:
+// Created: 29/01/98
+// RCS-ID: $Id$
+// Copyright: (c) 1998 Julian Smart
+// Licence: wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+// ============================================================================
+// declarations
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
+ #pragma implementation "filefn.h"
+#endif
+
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+#include "wx/defs.h"
+#include "wx/file.h"
+
+#ifdef __BORLANDC__
+ #pragma hdrstop
+#endif
+
+#include <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+
+#ifdef __WINCE__
+
+int wxOpen(const wxChar *filename, int oflag, int WXUNUSED(pmode))
+{
+ DWORD access = 0;
+ DWORD shareMode = 0;
+ DWORD disposition = 0;
+
+ if ((oflag & (O_RDONLY | O_WRONLY | O_RDWR)) == O_RDONLY)
+ {
+ access = GENERIC_READ;
+ shareMode = FILE_SHARE_READ|FILE_SHARE_WRITE;
+ disposition |= OPEN_EXISTING;
+ }
+ else if ((oflag & (O_RDONLY | O_WRONLY | O_RDWR)) == O_WRONLY)
+ {
+ access = GENERIC_WRITE;
+ }
+ else if ((oflag & (O_RDONLY | O_WRONLY | O_RDWR)) == O_RDWR)
+ {
+ access = GENERIC_READ|GENERIC_WRITE;
+ }
+ if (oflag & O_APPEND)
+ {
+ if ( wxFile::Exists(filename) )
+ {
+ access |= GENERIC_WRITE;
+ shareMode = FILE_SHARE_READ;
+ disposition = OPEN_EXISTING;
+ }
+ //else: fall through as write_append is the same as write if the
+ // file doesn't exist
+ else
+ oflag |= O_TRUNC;
+ }
+ if (oflag & O_TRUNC)
+ {
+ access |= GENERIC_WRITE;
+ shareMode = 0;
+ disposition = (oflag & O_CREAT) ? CREATE_ALWAYS : TRUNCATE_EXISTING;
+ }
+ else if (oflag & O_CREAT)
+ {
+ access |= GENERIC_WRITE;
+ shareMode = 0;
+ disposition = CREATE_NEW;
+ }
+ else if (oflag & O_EXCL)
+ {
+ access |= GENERIC_WRITE;
+ shareMode = 0;
+ disposition = TRUNCATE_EXISTING;
+ }
+
+ int fd = 0;
+ HANDLE fileHandle = ::CreateFile(filename, access, shareMode, NULL,
+ disposition, FILE_ATTRIBUTE_NORMAL, 0);
+ if (fileHandle == INVALID_HANDLE_VALUE)
+ fd = -1;
+ else
+ fd = (int) fileHandle;
+
+ return fd;
+}
+
+int wxAccess(const wxChar *name, int WXUNUSED(how))
+{
+ HANDLE fileHandle = ::CreateFile(name, 0, FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE, NULL,
+ OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
+
+ if (fileHandle == INVALID_HANDLE_VALUE)
+ return -1;
+
+ CloseHandle(fileHandle);
+
+ return 0;
+}
+
+int wxClose(int fd)
+{
+ if (CloseHandle((HANDLE)fd))
+ return 0;
+ return -1;
+}
+
+int wxEof(int fd)
+{
+ LONG high0 = 0;
+ DWORD off0 = SetFilePointer((HANDLE) fd, 0, &high0, FILE_CURRENT);
+ if (off0 == 0xFFFFFFFF && GetLastError() != NO_ERROR)
+ return -1;
+
+ LONG high1 = 0;
+ DWORD off1 = SetFilePointer((HANDLE) fd, 0, &high0, FILE_END);
+ if (off1 == 0xFFFFFFFF && GetLastError() != NO_ERROR)
+ return -1;
+
+ if (off0 == off1 && high0 == high1)
+ return 1;
+ else
+ {
+ SetFilePointer((HANDLE) fd, off0, &high0, FILE_BEGIN);
+ return 0;
+ }
+}
+
+int wxRead(int fd, void *buf, unsigned int count)
+{
+ DWORD bytesRead = 0;
+
+ if (ReadFile((HANDLE) fd, buf, (DWORD) count, &bytesRead, NULL))
+ return bytesRead;
+ else
+ return -1;
+}
+
+int wxWrite(int fd, const void *buf, unsigned int count)
+{
+ DWORD bytesWritten = 0;
+
+ if (WriteFile((HANDLE) fd, buf, (DWORD) count, &bytesWritten, NULL))
+ return bytesWritten;
+ else
+ return -1;
+}
+
+__int64 wxSeek(int fd, __int64 offset, int origin)
+{
+ int method;
+ switch ( origin ) {
+ default:
+ wxFAIL_MSG(_("unknown seek origin"));
+
+ case SEEK_SET:
+ method = FILE_BEGIN;
+ break;
+
+ case SEEK_CUR:
+ method = FILE_CURRENT;
+ break;
+
+ case SEEK_END:
+ method = FILE_END;
+ break;
+ }
+
+ LONG high = 0;
+ DWORD res = SetFilePointer((HANDLE) fd, offset, &high, method) ;
+ if (res == 0xFFFFFFFF && GetLastError() != NO_ERROR)
+ {
+ wxLogSysError(_("can't seek on file descriptor %d"), fd);
+ return wxInvalidOffset;
+ }
+ else
+ return (off_t)res;
+}
+
+__int64 wxTell(int fd)
+{
+ LONG high = 0;
+ DWORD res = SetFilePointer((HANDLE) fd, 0, &high, FILE_CURRENT) ;
+ if (res == 0xFFFFFFFF && GetLastError() != NO_ERROR)
+ {
+ wxLogSysError(_("can't get seek position on file descriptor %d"), fd);
+ return wxInvalidOffset;
+ }
+ else
+ return res + (((__int64)high) << 32);
+}
+
+int wxFsync(int WXUNUSED(fd))
+{
+ return 0;
+}
+
+#endif //__WINCE__
projects / wxWidgets.git / commitdiff
