зеркало из https://github.com/mozilla/gecko-dev.git
134 строки
4.1 KiB
C++
134 строки
4.1 KiB
C++
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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// First checked in on 98/12/08 by John R. McMullen.
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// Since nsFileStream.h is entirely templates, common code (such as open())
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// which does not actually depend on the charT, can be placed here.
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#ifdef XP_UNIX
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// Compile the un-inlined functions in this file only.
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#define DEFINING_FILE_STREAM
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#endif
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#include "nsStdFileStream.h"
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#ifdef XP_MAC
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#include <Errors.h>
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#endif
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//----------------------------------------------------------------------------------------
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PRFileDesc* nsFileStreamHelpers::open(
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const nsFilePath& inFile,
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IOS_BASE::openmode mode,
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PRIntn accessMode)
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//----------------------------------------------------------------------------------------
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{
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PRFileDesc* descriptor = 0;
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const IOS_BASE::openmode valid_modes[]=
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{
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IOS_BASE::out,
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IOS_BASE::out | IOS_BASE::app,
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IOS_BASE::out | IOS_BASE::trunc,
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IOS_BASE::in,
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IOS_BASE::in | IOS_BASE::out,
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IOS_BASE::in | IOS_BASE::out | IOS_BASE::trunc,
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// IOS_BASE::out | IOS_BASE::binary,
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// IOS_BASE::out | IOS_BASE::app | IOS_BASE::binary,
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// IOS_BASE::out | IOS_BASE::trunc | IOS_BASE::binary,
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// IOS_BASE::in | IOS_BASE::binary,
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// IOS_BASE::in | IOS_BASE::out | IOS_BASE::binary,
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// IOS_BASE::in | IOS_BASE::out | IOS_BASE::trunc | IOS_BASE::binary,
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0
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};
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const int nspr_modes[]={
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PR_WRONLY | PR_CREATE_FILE,
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PR_WRONLY | PR_CREATE_FILE | PR_APPEND,
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PR_WRONLY | PR_CREATE_FILE | PR_TRUNCATE,
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PR_RDONLY,
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PR_RDONLY | PR_APPEND,
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PR_RDWR | PR_CREATE_FILE,
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PR_RDWR | PR_CREATE_FILE | PR_TRUNCATE,
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// "wb",
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// "ab",
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// "wb",
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// "rb",
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// "r+b",
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// "w+b",
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0 };
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int ind=0;
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while (valid_modes[ind] && valid_modes[ind] != (mode&~IOS_BASE::ate))
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++ind;
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if (!nspr_modes[ind])
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return 0;
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#ifdef XP_MAC
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// Use the file spec to open the file, because one path can be common to
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// several files on the Macintosh (you can have several volumes with the
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// same name, see).
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descriptor = 0;
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if (inFile.GetNativeSpec().Error() != noErr)
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return 0;
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OSErr err = noErr;
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#if DEBUG
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const OSType kCreator = 'CWIE';
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#else
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const OSType kCreator = 'MOSS';
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#endif
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nsNativeFileSpec nativeSpec = inFile.GetNativeSpec();
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FSSpec* spec = (FSSpec*)nativeSpec;
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if (nspr_modes[ind] & PR_CREATE_FILE)
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err = FSpCreate(spec, kCreator, 'TEXT', 0);
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if (err == dupFNErr)
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err = noErr;
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if (err != noErr)
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return 0;
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SInt8 perm;
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if (nspr_modes[ind] & PR_RDWR)
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perm = fsRdWrPerm;
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else if (nspr_modes[ind] & PR_WRONLY)
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perm = fsWrPerm;
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else
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perm = fsRdPerm;
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short refnum;
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err = FSpOpenDF(spec, perm, &refnum);
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if (err == noErr && (nspr_modes[ind] & PR_TRUNCATE))
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err = SetEOF(refnum, 0);
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if (err == noErr && (nspr_modes[ind] & PR_APPEND))
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err = SetFPos(refnum, fsFromLEOF, 0);
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if (err != noErr)
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return 0;
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if ((descriptor = PR_ImportFile(refnum)) == 0)
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return 0;
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#else
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// Platforms other than Macintosh...
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if ((descriptor = PR_Open(inFile, nspr_modes[ind], accessMode)) != 0)
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#endif
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if (mode&IOS_BASE::ate && PR_Seek(descriptor, 0, PR_SEEK_END) >= 0)
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{
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PR_Close(descriptor);
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descriptor = 0;
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return 0;
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}
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return descriptor;
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} // nsFileStreamHelpers::open
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