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Removing nsSafeSaveFile.

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b=250092, r=biesi, sr=darin


git-svn-id: svn://10.0.0.236/trunk@159518 18797224-902f-48f8-a5cc-f745e15eee43
This commit is contained in:
dwitte%stanford.edu 2004-07-19 23:43:35 +00:00
parent 54de3b2131
commit c44627b8f2
2 changed files with 0 additions and 184 deletions
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129
mozilla/modules/libpref/src/nsSafeSaveFile.cpp
View File

@ -1,129 +0,0 @@
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: NPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Netscape Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Communicator client code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Brian Nesse <bnesse@netscape.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the NPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the NPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsSafeSaveFile.h"
nsresult nsSafeSaveFile::Init(nsIFile *aTargetFile, nsIFile **aTempFile)
{
NS_ASSERTION(aTargetFile, "null pointer");
NS_ASSERTION(aTempFile, "null pointer");
*aTempFile = nsnull;
nsresult rv;
rv = aTargetFile->Exists(&mTargetFileExists);
if (NS_FAILED(rv)) {
NS_ERROR("Can't tell if target file exists");
mTargetFileExists = PR_TRUE; // Safer to assume it exists - we just do more work.
}
nsCOMPtr<nsIFile> tempResult;
rv = aTargetFile->Clone(getter_AddRefs(tempResult));
if (NS_SUCCEEDED(rv) && mTargetFileExists) {
PRUint32 perm;
if (NS_FAILED(aTargetFile->GetPermissions(&perm))) {
NS_ERROR("Can't get permissions of target file");
perm = 0700;
}
rv = tempResult->CreateUnique(nsIFile::NORMAL_FILE_TYPE, perm);
}
if (NS_SUCCEEDED(rv)) {
NS_ADDREF(*aTempFile = tempResult);
mTargetFile = aTargetFile;
mTempFile = tempResult;
}
return rv;
}
nsresult nsSafeSaveFile::OnSaveFinished(PRBool aSaveSucceeded, PRBool aBackupTarget)
{
nsresult rv = NS_OK;
if (aSaveSucceeded) {
NS_ENSURE_STATE(mTargetFile && mTempFile);
if (!mTargetFileExists) {
// If the target file did not exist when we were initialized, then the
// temp file we gave out was actually a reference to the target file.
// since we succeeded in writing to the temp file (and hence succeeded
// in writing to the target file), there is nothing more to do.
#ifdef DEBUG
PRBool equal;
if (NS_FAILED(mTargetFile->Equals(mTempFile, &equal)) || !equal)
NS_ERROR("mTempFile not equal to mTargetFile");
#endif
return NS_OK;
}
nsCAutoString targetFilename;
rv = mTargetFile->GetNativeLeafName(targetFilename);
if (aBackupTarget) {
// Create a copy of the target before we overwrite it
nsCAutoString backupFilename(targetFilename);
PRInt32 pos = backupFilename.RFindChar('.');
if (pos != -1)
backupFilename.Truncate(pos);
backupFilename.AppendLiteral(".bak");
// Find a unique name for the backup by using CreateUnique
nsCOMPtr<nsIFile> uniqueFile;
rv = mTargetFile->Clone(getter_AddRefs(uniqueFile));
if (NS_SUCCEEDED(rv)) {
rv = uniqueFile->SetNativeLeafName(backupFilename);
if (NS_SUCCEEDED(rv)) {
rv = uniqueFile->CreateUnique(nsIFile::NORMAL_FILE_TYPE, 0600);
if (NS_SUCCEEDED(rv)) {
uniqueFile->GetNativeLeafName(backupFilename);
uniqueFile->Remove(PR_FALSE);
// Finally, move the target to the backup
mTargetFile->MoveToNative(nsnull, backupFilename);
}
}
}
}
if (NS_SUCCEEDED(rv))
rv = mTempFile->MoveToNative(nsnull, targetFilename); // This will replace target
}
else {
NS_ENSURE_STATE(mTempFile);
rv = mTempFile->Remove(PR_FALSE);
}
return rv;
}

55
mozilla/modules/libpref/src/nsSafeSaveFile.h
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@ -1,55 +0,0 @@
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: NPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Netscape Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Communicator client code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Brian Nesse <bnesse@netscape.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the NPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the NPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsIFile.h"
#include "nsString.h"
class nsSafeSaveFile {
public:
nsSafeSaveFile() {}
~nsSafeSaveFile() {}
nsresult Init(nsIFile *aTargetFile, nsIFile **aTempFile);
nsresult OnSaveFinished(PRBool aSaveSucceeded, PRBool aBackupTarget);
private:
nsCOMPtr<nsIFile> mTargetFile;
PRBool mTargetFileExists;
nsCOMPtr<nsIFile> mTempFile;
};