mirror of
https://github.com/mozilla/gecko-dev.git
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121 lines
3.7 KiB
C++
121 lines
3.7 KiB
C++
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 1.1/GPL 2.0/LGPL 2.1
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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 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* 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
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1999
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the NPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsIServiceManager.h"
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#include "nsLocalFile.h" // includes platform-specific headers
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#include "nsLocalFileUnicode.h"
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#include "nsString.h"
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#include "nsCOMPtr.h"
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#include "nsXPIDLString.h"
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void NS_StartupLocalFile()
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{
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#ifdef XP_WIN
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nsresult rv = NS_CreateShortcutResolver();
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NS_ASSERTION(NS_SUCCEEDED(rv), "Shortcut resolver could not be created");
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#endif
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}
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void NS_ShutdownLocalFile()
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{
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NS_ShutdownLocalFileUnicode();
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#ifdef XP_WIN
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NS_DestroyShortcutResolver();
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#endif
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}
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// should work on Macintosh, Unix, and Win32.
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#define kMaxFilenameLength 31
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NS_IMETHODIMP
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nsLocalFile::CreateUnique(PRUint32 type, PRUint32 attributes)
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{
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nsresult rv = Create(type, attributes);
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if (NS_SUCCEEDED(rv)) return NS_OK;
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if (rv != NS_ERROR_FILE_ALREADY_EXISTS) return rv;
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char* leafName;
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rv = GetLeafName(&leafName);
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if (NS_FAILED(rv)) return rv;
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char* lastDot = strrchr(leafName, '.');
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char suffix[kMaxFilenameLength + 1] = "";
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if (lastDot)
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{
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strncpy(suffix, lastDot, kMaxFilenameLength); // include '.'
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suffix[kMaxFilenameLength] = 0; // make sure it's null terminated
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*lastDot = '\0'; // strip suffix and dot.
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}
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// 27 should work on Macintosh, Unix, and Win32.
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const int maxRootLength = 27 - nsCRT::strlen(suffix) - 1;
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if ((int)nsCRT::strlen(leafName) > (int)maxRootLength)
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leafName[maxRootLength] = '\0';
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for (short indx = 1; indx < 10000; indx++)
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{
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// start with "Picture-1.jpg" after "Picture.jpg" exists
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char newName[kMaxFilenameLength + 1];
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sprintf(newName, "%s-%d%s", leafName, indx, suffix);
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SetLeafName(newName);
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rv = Create(type, attributes);
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if (NS_SUCCEEDED(rv) || rv != NS_ERROR_FILE_ALREADY_EXISTS)
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{
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nsMemory::Free(leafName);
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return rv;
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}
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}
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nsMemory::Free(leafName);
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// The disk is full, sort of
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return NS_ERROR_FILE_TOO_BIG;
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}
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