зеркало из https://github.com/mozilla/pjs.git
835 строки
37 KiB
C++
835 строки
37 KiB
C++
/* -*- 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
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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THESE CLASSES ARE DEPRECIATED AND UNSUPPORTED! USE |nsIFile| and |nsILocalFile|.
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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// First checked in on 98/11/20 by John R. McMullen in the wrong directory.
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// Checked in again 98/12/04.
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// Polished version 98/12/08.
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//========================================================================================
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//
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// Classes defined:
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//
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// nsFilePath, nsFileURL, nsFileSpec, nsPersistentFileDescriptor
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// nsDirectoryIterator. Oh, and a convenience class nsAutoCString.
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//
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// Q. How should I represent files at run time?
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// A. Use nsFileSpec. Using char* will lose information on some platforms.
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//
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// Q. Then what are nsFilePath and nsFileURL for?
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// A. Only when you need a char* parameter for legacy code.
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//
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// Q. How should I represent files in a persistent way (eg, in a disk file)?
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// A. Use nsPersistentFileDescriptor. Convert to and from nsFileSpec at run time.
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//
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// This suite provides the following services:
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//
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// 1. Encapsulates all platform-specific file details, so that files can be
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// described correctly without any platform #ifdefs
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//
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// 2. Type safety. This will fix the problems that used to occur because people
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// confused file paths. They used to use const char*, which could mean three
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// or four different things. Bugs were introduced as people coded, right up
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// to the moment Communicator 4.5 shipped.
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//
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// 3. Used in conjunction with nsFileStream.h (q.v.), this supports all the power
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// and readability of the ansi stream syntax.
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//
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// Basic example:
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//
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// nsFilePath myPath("/Development/iotest.txt");
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//
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// nsOutputFileStream testStream(nsFileSpec(myPath));
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// testStream << "Hello World" << nsEndl;
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//
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// 4. Handy methods for manipulating file specifiers safely, e.g. MakeUnique(),
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// SetLeafName(), Exists().
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//
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// 5. Easy cross-conversion.
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//
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// Examples:
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//
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// Initialize a URL from a string
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//
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// nsFileURL fileURL("file:///Development/MPW/MPW%20Shell");
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//
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// Initialize a Unix-style path from a URL
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//
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// nsFilePath filePath(fileURL);
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//
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// Initialize a file spec from a URL
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//
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// nsFileSpec fileSpec(fileURL);
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//
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// Make the spec unique.
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//
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// fileSpec.MakeUnique();
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//
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// Assign the spec to a URL (causing conversion)
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//
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// fileURL = fileSpec;
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//
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// Assign a unix path using a string
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//
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// filePath = "/Development/MPW/SysErrs.err";
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//
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// Assign to a file spec using a unix path (causing conversion).
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//
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// fileSpec = filePath;
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//
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// Make this unique.
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//
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// fileSpec.MakeUnique();
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//
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// 6. Fixes a bug that have been there for a long time, and
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// is inevitable if you use NSPR alone, where files are described as paths.
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//
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// The problem affects platforms (Macintosh) in which a path does not fully
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// specify a file, because two volumes can have the same name. This
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// is solved by holding a "private" native file spec inside the
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// nsFilePath and nsFileURL classes, which is used when appropriate.
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//
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//========================================================================================
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#ifndef _FILESPEC_H_
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#define _FILESPEC_H_
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#include "nscore.h"
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#include "nsError.h"
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#include "nsString.h"
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#include "nsCRT.h"
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#include "prtypes.h"
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//========================================================================================
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// Compiler-specific macros, as needed
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//========================================================================================
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#if !defined(NS_USING_NAMESPACE) && (defined(__MWERKS__) || defined(XP_WIN))
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#define NS_USING_NAMESPACE
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#endif
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#ifdef NS_USING_NAMESPACE
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#define NS_NAMESPACE_PROTOTYPE
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#define NS_NAMESPACE namespace
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#define NS_NAMESPACE_END
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#define NS_EXPLICIT explicit
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#else
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#define NS_NAMESPACE_PROTOTYPE static
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#define NS_NAMESPACE struct
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#define NS_NAMESPACE_END ;
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#define NS_EXPLICIT
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#endif
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//=========================== End Compiler-specific macros ===============================
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#include "nsILocalFile.h"
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#include "nsCOMPtr.h"
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#if defined(XP_MAC) || defined(RHAPSODY)
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#include <Files.h>
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#include "nsILocalFileMac.h"
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#endif
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// this can't be elif because rhapsody needs both headers
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#if defined(XP_UNIX) || defined (XP_OS2) || defined(XP_BEOS) || defined(RHAPSODY)
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#if defined(XP_OS2)
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#define INCL_DOS
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#define INCL_DOSERRORS
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#define INCL_WIN
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#define INCL_GPI
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#include <os2.h>
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#include <sys/types.h> // required for dirent.h
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#include "prio.h"
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#endif
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#include <dirent.h>
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#elif defined(XP_WIN)
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// This clashes with some of the Win32 system headers (specifically,
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// winbase.h). Hopefully they'll have been included first; else we may
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// have problems. We could include winbase.h before doing this;
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// unfortunately, it's bring in too much crap and'd slow stuff down
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// more than it's worth doing.
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#ifdef CreateDirectory
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#undef CreateDirectory
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#endif
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#include "prio.h"
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#endif
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//========================================================================================
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// Here are the allowable ways to describe a file.
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//========================================================================================
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class nsFileSpec; // Preferred. For i/o use nsInputFileStream, nsOutputFileStream
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class nsFilePath;
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class nsFileURL;
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class nsNSPRPath; // This can be passed to NSPR file I/O routines, if you must.
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class nsPersistentFileDescriptor; // Used for storage across program launches.
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#define kFileURLPrefix "file://"
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#define kFileURLPrefixLength (7)
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class nsOutputStream;
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class nsInputStream;
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class nsIOutputStream;
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class nsIInputStream;
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class nsOutputFileStream;
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class nsInputFileStream;
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class nsOutputConsoleStream;
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class nsString;
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class nsIUnicodeEncoder;
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class nsIUnicodeDecoder;
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//========================================================================================
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// Conversion of native file errors to nsresult values. These are really only for use
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// in the file module, clients of this interface shouldn't really need them.
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// Error results returned from this interface have, in the low-order 16 bits,
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// native errors that are masked to 16 bits. Assumption: a native error of 0 is success
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// on all platforms. Note the way we define this using an inline function. This
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// avoids multiple evaluation if people go NS_FILE_RESULT(function_call()).
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#define NS_FILE_RESULT(x) ns_file_convert_result((PRInt32)x)
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nsresult ns_file_convert_result(PRInt32 nativeErr);
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#define NS_FILE_FAILURE NS_FILE_RESULT(-1)
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//========================================================================================
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class NS_COM nsAutoCString
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//
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// This should be in nsString.h, but the owner would not reply to my proposal. After four
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// weeks, I decided to put it in here.
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//
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// This is a quiet little class that acts as a sort of autoptr for
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// a const char*. If you used to call nsString::ToNewCString(), just
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// to pass the result a parameter list, it was a nuisance having to
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// call delete [] on the result after the call. Now you can say
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// nsString myStr;
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// ...
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// f(nsAutoCString(myStr));
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// where f is declared as void f(const char*); This call will
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// make a temporary char* pointer on the stack and delete[] it
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// when the function returns.
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//========================================================================================
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{
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public:
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NS_EXPLICIT nsAutoCString(const nsString& other) : mCString(other.ToNewCString()) {}
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virtual ~nsAutoCString();
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operator const char*() const { return mCString; }
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// operator const char*() { return mCString; }
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// don't need this, since |operator const char*() const| can
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// serve for both |const| and non-|const| callers
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protected:
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const char* mCString;
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}; // class nsAutoCString
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//========================================================================================
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class NS_COM nsSimpleCharString
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// An envelope for char*: reference counted. Used internally by all the nsFileSpec
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// classes below.
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//========================================================================================
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{
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public:
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nsSimpleCharString();
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nsSimpleCharString(const char*);
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nsSimpleCharString(const nsString&);
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nsSimpleCharString(const nsSimpleCharString&);
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nsSimpleCharString(const char* inData, PRUint32 inLength);
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~nsSimpleCharString();
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void operator = (const char*);
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void operator = (const nsString&);
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void operator = (const nsSimpleCharString&);
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operator const char*() const { return mData ? mData->mString : 0; }
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operator char* ()
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{
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ReallocData(Length()); // requires detaching if shared...
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return mData ? mData->mString : 0;
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}
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PRBool operator == (const char*);
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PRBool operator == (const nsString&);
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PRBool operator == (const nsSimpleCharString&);
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void operator += (const char* inString);
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nsSimpleCharString operator + (const char* inString) const;
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char operator [](int i) const { return mData ? mData->mString[i] : '\0'; }
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char& operator [](int i)
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{
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if (i >= (int)Length())
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ReallocData((PRUint32)i + 1);
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return mData->mString[i]; // caveat appelator
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}
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char& operator [](unsigned int i) { return (*this)[(int)i]; }
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void Catenate(const char* inString1, const char* inString2);
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void SetToEmpty();
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PRBool IsEmpty() const { return Length() == 0; }
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PRUint32 Length() const { return mData ? mData->mLength : 0; }
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void SetLength(PRUint32 inLength) { ReallocData(inLength); }
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void CopyFrom(const char* inData, PRUint32 inLength);
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void LeafReplace(char inSeparator, const char* inLeafName);
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char* GetLeaf(char inSeparator) const; // use PR_Free()
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void Unescape();
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protected:
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void AddRefData();
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void ReleaseData();
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void ReallocData(PRUint32 inLength);
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//--------------------------------------------------
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// Data
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//--------------------------------------------------
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protected:
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struct Data {
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int mRefCount;
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PRUint32 mLength;
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char mString[1];
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};
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Data* mData;
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}; // class nsSimpleCharString
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//========================================================================================
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class NS_COM nsFileSpec
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// This is whatever each platform really prefers to describe files as. Declared first
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// because the other two types have an embedded nsFileSpec object.
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//========================================================================================
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{
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public:
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nsFileSpec();
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// These two meathods take *native* file paths.
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NS_EXPLICIT nsFileSpec(const char* inNativePath, PRBool inCreateDirs = PR_FALSE);
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NS_EXPLICIT nsFileSpec(const nsString& inNativePath, PRBool inCreateDirs = PR_FALSE);
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NS_EXPLICIT nsFileSpec(const nsFilePath& inPath);
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NS_EXPLICIT nsFileSpec(const nsFileURL& inURL);
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NS_EXPLICIT nsFileSpec(const nsPersistentFileDescriptor& inURL);
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nsFileSpec(const nsFileSpec& inPath);
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virtual ~nsFileSpec();
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// These two operands take *native* file paths.
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void operator = (const char* inNativePath);
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void operator = (const nsString& inNativePath);
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void operator = (const nsFilePath& inPath);
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void operator = (const nsFileURL& inURL);
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void operator = (const nsFileSpec& inOther);
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void operator = (const nsPersistentFileDescriptor& inOther);
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PRBool operator ==(const nsFileSpec& inOther) const;
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PRBool operator !=(const nsFileSpec& inOther) const;
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// Returns a native path, and allows the
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// path to be "passed" to legacy code. This practice
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// is VERY EVIL and should only be used to support legacy
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// code. Using it guarantees bugs on Macintosh.
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// The path is cached and freed by the nsFileSpec destructor
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// so do not delete (or free) it. See also nsNSPRPath below,
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// if you really must pass a string to PR_OpenFile().
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// Doing so will introduce two automatic bugs.
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const char* GetCString() const;
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// Same as GetCString (please read the comments).
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// Do not try to free this!
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operator const char* () const { return GetCString(); }
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// Same as GetCString (please read the comments).
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// Do not try to free this!
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const char* GetNativePathCString() const { return GetCString(); }
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// Returns a path in unicode
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// converted from a file system charset.
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void GetNativePathString(nsString &nativePathString);
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PRBool IsChildOf(nsFileSpec &possibleParent);
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#if defined(XP_MAC) || defined(RHAPSODY)
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// For Macintosh people, this is meant to be useful in its own right as a C++ version
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// of the FSSpec struct.
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nsFileSpec(
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short vRefNum,
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long parID,
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ConstStr255Param name,
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PRBool resolveAlias = PR_TRUE);
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nsFileSpec(const FSSpec& inSpec, PRBool resolveAlias = PR_TRUE);
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void operator = (const FSSpec& inSpec);
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operator FSSpec* () { return &mSpec; }
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operator const FSSpec* const () { return &mSpec; }
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operator FSSpec& () { return mSpec; }
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operator const FSSpec& () const { return mSpec; }
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const FSSpec& GetFSSpec() const { return mSpec; }
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FSSpec& GetFSSpec() { return mSpec; }
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ConstFSSpecPtr GetFSSpecPtr() const { return &mSpec; }
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FSSpecPtr GetFSSpecPtr() { return &mSpec; }
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void MakeAliasSafe();
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void MakeUnique(ConstStr255Param inSuggestedLeafName);
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StringPtr GetLeafPName() { return mSpec.name; }
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ConstStr255Param GetLeafPName() const { return mSpec.name; }
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OSErr GetCatInfo(CInfoPBRec& outInfo) const;
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OSErr SetFileTypeAndCreator(OSType type, OSType creator);
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OSErr GetFileTypeAndCreator(OSType* type, OSType* creator);
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#endif // end of Macintosh utility methods.
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PRBool Valid() const { return NS_SUCCEEDED(Error()); }
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nsresult Error() const
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{
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#ifndef XP_MAC
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if (mPath.IsEmpty() && NS_SUCCEEDED(mError))
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((nsFileSpec*)this)->mError = NS_ERROR_NOT_INITIALIZED;
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#endif
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return mError;
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}
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PRBool Failed() const { return (PRBool)NS_FAILED(Error()); }
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//--------------------------------------------------
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// Queries and path algebra. These do not modify the disk.
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//--------------------------------------------------
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char* GetLeafName() const; // Allocated. Use nsCRT::free().
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// Unicode version of GetLeafName()
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void GetLeafName(nsString &nativePathString);
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#if 0
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// needs implementing
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// copy the leaf name into the supplied buffer, thus
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// getting a copy without allocation. Buffer should be
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// 64 chars big.
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void GetLeafNameCopy(char* destBuffer, PRInt32 bufferSize) const;
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#endif
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// inLeafName can be a relative path, so this allows
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// one kind of concatenation of "paths".
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void SetLeafName(const char* inLeafName);
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void SetLeafName(const nsString& inLeafName);
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// Return the filespec of the parent directory. Used
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// in conjunction with GetLeafName(), this lets you
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// parse a path into a list of node names. Beware,
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// however, that the top node is still not a name,
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// but a spec. Volumes on Macintosh can have identical
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// names. Perhaps could be used for an operator --() ?
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void GetParent(nsFileSpec& outSpec) const;
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// ie nsFileSpec::TimeStamp. This is 32 bits now,
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// but might change, eg, to a 64-bit class. So use the
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// typedef, and use a streaming operator to convert
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// to a string, so that your code won't break. It's
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// none of your business what the number means. Don't
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// rely on the implementation.
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typedef PRUint32 TimeStamp;
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// This will return different values on different
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// platforms, even for the same file (eg, on a server).
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// But if the platform is constant, it will increase after
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// every file modification.
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void GetModDate(TimeStamp& outStamp) const;
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PRBool ModDateChanged(const TimeStamp& oldStamp) const
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{
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TimeStamp newStamp;
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GetModDate(newStamp);
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return newStamp != oldStamp;
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}
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PRUint32 GetFileSize() const;
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PRInt64 GetDiskSpaceAvailable() const;
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nsFileSpec operator + (const char* inRelativeUnixPath) const;
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nsFileSpec operator + (const nsString& inRelativeUnixPath) const;
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// Concatenate the relative path to this directory.
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// Used for constructing the filespec of a descendant.
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// This must be a directory for this to work. This differs
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// from SetLeafName(), since the latter will work
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// starting with a sibling of the directory and throws
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// away its leaf information, whereas this one assumes
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// this is a directory, and the relative path starts
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// "below" this.
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void operator += (const char* inRelativeUnixPath);
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void operator += (const nsString& inRelativeUnixPath);
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void MakeUnique();
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void MakeUnique(const char* inSuggestedLeafName);
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void MakeUnique(const nsString& inSuggestedLeafName);
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PRBool IsDirectory() const; // More stringent than Exists()
|
|
PRBool IsFile() const; // More stringent than Exists()
|
|
PRBool Exists() const;
|
|
|
|
PRBool IsHidden() const;
|
|
|
|
PRBool IsSymlink() const;
|
|
|
|
//--------------------------------------------------
|
|
// Creation and deletion of objects. These can modify the disk.
|
|
//--------------------------------------------------
|
|
|
|
// Called for the spec of an alias. Modifies the spec to
|
|
// point to the original. Sets mError.
|
|
nsresult ResolveSymlink(PRBool& wasSymlink);
|
|
|
|
void CreateDirectory(int mode = 0775 /* for unix */);
|
|
void CreateDir(int mode = 0775) { CreateDirectory(mode); }
|
|
// workaround for yet another VC++ bug with long identifiers.
|
|
void Delete(PRBool inRecursive) const;
|
|
nsresult Truncate(PRInt32 aNewLength) const;
|
|
void RecursiveCopy(nsFileSpec newDir) const;
|
|
|
|
nsresult Rename(const char* inNewName); // not const: gets updated
|
|
nsresult Rename(const nsString& inNewName);
|
|
nsresult CopyToDir(const nsFileSpec& inNewParentDirectory) const;
|
|
nsresult MoveToDir(const nsFileSpec& inNewParentDirectory);
|
|
nsresult Execute(const char* args) const;
|
|
nsresult Execute(const nsString& args) const;
|
|
|
|
// Internal routine
|
|
//--------------------------------------------------
|
|
|
|
// Convert's routine from Native charset to Unicode.
|
|
protected:
|
|
|
|
// use delete [] to free the returned buffer
|
|
PRUnichar* ConvertFromFileSystemCharset(const char *inString);
|
|
static void GetFileSystemCharset(nsString & fileSystemCharset);
|
|
|
|
//--------------------------------------------------
|
|
// Data
|
|
//--------------------------------------------------
|
|
|
|
protected:
|
|
|
|
// Clear the nsFileSpec contents, resetting it
|
|
// to the uninitialized state;
|
|
void Clear();
|
|
|
|
friend class nsFilePath;
|
|
friend class nsFileURL;
|
|
friend class nsDirectoryIterator;
|
|
#if defined(XP_MAC) || defined(RHAPSODY)
|
|
FSSpec mSpec;
|
|
#endif
|
|
nsSimpleCharString mPath;
|
|
nsresult mError;
|
|
|
|
}; // class nsFileSpec
|
|
|
|
// FOR HISTORICAL REASONS:
|
|
|
|
typedef nsFileSpec nsNativeFileSpec;
|
|
|
|
//========================================================================================
|
|
class NS_COM nsFileURL
|
|
// This is an escaped string that looks like "file:///foo/bar/mumble%20fish". Since URLs
|
|
// are the standard way of doing things in mozilla, this allows a string constructor,
|
|
// which just stashes the string with no conversion.
|
|
//========================================================================================
|
|
{
|
|
public:
|
|
nsFileURL(const nsFileURL& inURL);
|
|
NS_EXPLICIT nsFileURL(const char* inURLString, PRBool inCreateDirs = PR_FALSE);
|
|
NS_EXPLICIT nsFileURL(const nsString& inURLString, PRBool inCreateDirs = PR_FALSE);
|
|
NS_EXPLICIT nsFileURL(const nsFilePath& inPath);
|
|
NS_EXPLICIT nsFileURL(const nsFileSpec& inPath);
|
|
virtual ~nsFileURL();
|
|
|
|
// nsString GetString() const { return mPath; }
|
|
// may be needed for implementation reasons,
|
|
// but should not provide a conversion constructor.
|
|
|
|
void operator = (const nsFileURL& inURL);
|
|
void operator = (const char* inURLString);
|
|
void operator = (const nsString& inURLString)
|
|
{
|
|
const nsAutoCString string(inURLString);
|
|
*this = string;
|
|
}
|
|
void operator = (const nsFilePath& inOther);
|
|
void operator = (const nsFileSpec& inOther);
|
|
|
|
void operator +=(const char* inRelativeUnixPath);
|
|
nsFileURL operator +(const char* inRelativeUnixPath) const;
|
|
operator const char* () const { return (const char*)mURL; } // deprecated.
|
|
const char* GetURLString() const { return (const char*)mURL; }
|
|
// Not allocated, so don't free it.
|
|
const char* GetAsString() const { return (const char*)mURL; }
|
|
// Not allocated, so don't free it.
|
|
|
|
#ifdef XP_MAC
|
|
// Accessor to allow quick assignment to a mFileSpec
|
|
const nsFileSpec& GetFileSpec() const { return mFileSpec; }
|
|
#endif
|
|
|
|
//--------------------------------------------------
|
|
// Data
|
|
//--------------------------------------------------
|
|
|
|
protected:
|
|
friend class nsFilePath; // to allow construction of nsFilePath
|
|
nsSimpleCharString mURL;
|
|
|
|
#ifdef XP_MAC
|
|
// Since the path on the macintosh does not uniquely specify a file (volumes
|
|
// can have the same name), stash the secret nsFileSpec, too.
|
|
nsFileSpec mFileSpec;
|
|
#endif
|
|
}; // class nsFileURL
|
|
|
|
//========================================================================================
|
|
class NS_COM nsFilePath
|
|
// This is a string that looks like "/foo/bar/mumble fish". Same as nsFileURL, but
|
|
// without the "file:// prefix", and NOT %20 ENCODED! Strings passed in must be
|
|
// valid unix-style paths in this format.
|
|
//========================================================================================
|
|
{
|
|
public:
|
|
nsFilePath(const nsFilePath& inPath);
|
|
NS_EXPLICIT nsFilePath(const char* inUnixPathString, PRBool inCreateDirs = PR_FALSE);
|
|
NS_EXPLICIT nsFilePath(const nsString& inUnixPathString, PRBool inCreateDirs = PR_FALSE);
|
|
NS_EXPLICIT nsFilePath(const nsFileURL& inURL);
|
|
NS_EXPLICIT nsFilePath(const nsFileSpec& inPath);
|
|
virtual ~nsFilePath();
|
|
|
|
|
|
operator const char* () const { return mPath; }
|
|
// This will return a UNIX string. If you
|
|
// need a string that can be passed into
|
|
// NSPR, take a look at the nsNSPRPath class.
|
|
|
|
void operator = (const nsFilePath& inPath);
|
|
void operator = (const char* inUnixPathString);
|
|
void operator = (const nsString& inUnixPathString)
|
|
{
|
|
const nsAutoCString string(inUnixPathString);
|
|
*this = string;
|
|
}
|
|
void operator = (const nsFileURL& inURL);
|
|
void operator = (const nsFileSpec& inOther);
|
|
|
|
void operator +=(const char* inRelativeUnixPath);
|
|
nsFilePath operator +(const char* inRelativeUnixPath) const;
|
|
|
|
#ifdef XP_MAC
|
|
public:
|
|
// Accessor to allow quick assignment to a mFileSpec
|
|
const nsFileSpec& GetFileSpec() const { return mFileSpec; }
|
|
#endif
|
|
|
|
//--------------------------------------------------
|
|
// Data
|
|
//--------------------------------------------------
|
|
|
|
private:
|
|
|
|
nsSimpleCharString mPath;
|
|
#ifdef XP_MAC
|
|
// Since the path on the macintosh does not uniquely specify a file (volumes
|
|
// can have the same name), stash the secret nsFileSpec, too.
|
|
nsFileSpec mFileSpec;
|
|
#endif
|
|
}; // class nsFilePath
|
|
|
|
//========================================================================================
|
|
class NS_COM nsPersistentFileDescriptor
|
|
// To save information about a file's location in another file, initialize
|
|
// one of these from your nsFileSpec, and then write this out to your output stream.
|
|
// To retrieve the info, create one of these, read its value from an input stream.
|
|
// and then make an nsFileSpec from it.
|
|
//========================================================================================
|
|
{
|
|
public:
|
|
nsPersistentFileDescriptor() {}
|
|
// For use prior to reading in from a stream
|
|
nsPersistentFileDescriptor(const nsPersistentFileDescriptor& inEncodedData);
|
|
virtual ~nsPersistentFileDescriptor();
|
|
void operator = (const nsPersistentFileDescriptor& inEncodedData);
|
|
|
|
// Conversions
|
|
NS_EXPLICIT nsPersistentFileDescriptor(const nsFileSpec& inSpec);
|
|
void operator = (const nsFileSpec& inSpec);
|
|
|
|
// The following four functions are declared here (as friends). Their implementations
|
|
// are in mozilla/base/src/nsFileSpecStreaming.cpp.
|
|
|
|
friend nsresult Read(nsIInputStream* aStream, nsPersistentFileDescriptor&);
|
|
friend nsresult Write(nsIOutputStream* aStream, const nsPersistentFileDescriptor&);
|
|
// writes the data to a file
|
|
friend NS_COM nsInputStream& operator >> (nsInputStream&, nsPersistentFileDescriptor&);
|
|
// reads the data from a file
|
|
friend NS_COM nsOutputStream& operator << (nsOutputStream&, const nsPersistentFileDescriptor&);
|
|
// writes the data to a file
|
|
friend class nsFileSpec;
|
|
|
|
void GetData(nsSimpleCharString& outData) const;
|
|
void SetData(const nsSimpleCharString& inData);
|
|
void GetData(nsSimpleCharString& outData, PRInt32& outSize) const;
|
|
void SetData(const nsSimpleCharString& inData, PRInt32 inSize);
|
|
void SetData(const char* inData, PRInt32 inSize);
|
|
|
|
//--------------------------------------------------
|
|
// Data
|
|
//--------------------------------------------------
|
|
|
|
protected:
|
|
|
|
nsSimpleCharString mDescriptorString;
|
|
|
|
}; // class nsPersistentFileDescriptor
|
|
|
|
//========================================================================================
|
|
class NS_COM nsDirectoryIterator
|
|
// Example:
|
|
//
|
|
// nsFileSpec parentDir(...); // directory over whose children we shall iterate
|
|
// for (nsDirectoryIterator i(parentDir, PR_FALSE); i.Exists(); i++)
|
|
// {
|
|
// // do something with i.Spec()
|
|
// }
|
|
//
|
|
// - or -
|
|
//
|
|
// for (nsDirectoryIterator i(parentDir, PR_TRUE); i.Exists(); i--)
|
|
// {
|
|
// // do something with i.Spec()
|
|
// }
|
|
// This one passed the PR_TRUE flag which will resolve any symlink encountered.
|
|
//========================================================================================
|
|
{
|
|
public:
|
|
nsDirectoryIterator( const nsFileSpec& parent,
|
|
PRBool resoveSymLinks);
|
|
#ifndef XP_MAC
|
|
// Macintosh currently doesn't allocate, so needn't clean up.
|
|
virtual ~nsDirectoryIterator();
|
|
#endif
|
|
PRBool Exists() const { return mExists; }
|
|
nsDirectoryIterator& operator ++(); // moves to the next item, if any.
|
|
nsDirectoryIterator& operator ++(int) { return ++(*this); } // post-increment.
|
|
nsDirectoryIterator& operator --(); // moves to the previous item, if any.
|
|
nsDirectoryIterator& operator --(int) { return --(*this); } // post-decrement.
|
|
operator nsFileSpec&() { return mCurrent; }
|
|
|
|
nsFileSpec& Spec() { return mCurrent; }
|
|
|
|
private:
|
|
|
|
#if defined(XP_MAC)
|
|
OSErr SetToIndex();
|
|
#endif
|
|
|
|
//--------------------------------------------------
|
|
// Data
|
|
//--------------------------------------------------
|
|
|
|
private:
|
|
|
|
nsFileSpec mCurrent;
|
|
PRBool mExists;
|
|
PRBool mResoveSymLinks;
|
|
|
|
#if defined(XP_UNIX) || defined(XP_BEOS) || defined (XP_WIN) || defined(XP_OS2)
|
|
nsFileSpec mStarting;
|
|
#endif
|
|
|
|
#if defined(XP_UNIX) || defined(XP_BEOS)
|
|
DIR* mDir;
|
|
#elif defined(XP_WIN) || defined(XP_OS2)
|
|
PRDir* mDir; // XXX why not use PRDir for Unix too?
|
|
#elif defined(XP_MAC)
|
|
short mVRefNum;
|
|
long mParID;
|
|
short mIndex;
|
|
short mMaxIndex;
|
|
#endif
|
|
}; // class nsDirectoryIterator
|
|
|
|
//========================================================================================
|
|
class NS_COM nsNSPRPath
|
|
// This class will allow you to pass any one of the nsFile* classes directly into NSPR
|
|
// without the need to worry about whether you have the right kind of filepath or not.
|
|
// It will also take care of cleaning up any allocated memory.
|
|
//========================================================================================
|
|
{
|
|
public:
|
|
NS_EXPLICIT nsNSPRPath(const nsFileSpec& inSpec)
|
|
: mFilePath(inSpec), modifiedNSPRPath(nsnull) {}
|
|
NS_EXPLICIT nsNSPRPath(const nsFileURL& inURL)
|
|
: mFilePath(inURL), modifiedNSPRPath(nsnull) {}
|
|
NS_EXPLICIT nsNSPRPath(const nsFilePath& inUnixPath)
|
|
: mFilePath(inUnixPath), modifiedNSPRPath(nsnull) {}
|
|
|
|
virtual ~nsNSPRPath();
|
|
|
|
operator const char*() const;
|
|
// Returns the path
|
|
// that NSPR file routines expect on each platform.
|
|
// Concerning constness, this can modify
|
|
// modifiedNSPRPath, but it's really just "mutable".
|
|
|
|
//--------------------------------------------------
|
|
// Data
|
|
//--------------------------------------------------
|
|
|
|
private:
|
|
|
|
nsFilePath mFilePath;
|
|
char* modifiedNSPRPath; // Currently used only on XP_WIN,XP_OS2
|
|
}; // class nsNSPRPath
|
|
|
|
|
|
NS_COM nsresult NS_FileSpecToIFile(nsFileSpec* fileSpec, nsILocalFile* *result);
|
|
|
|
#endif // _FILESPEC_H_
|