gecko/toolkit/components/url-classifier/ChunkSet.cpp

137 lines
3.5 KiB
C++

//* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla 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/MPL/
*
* 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 Url Classifier code
*
* The Initial Developer of the Original Code is
* the Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2011
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Dave Camp <dcamp@mozilla.com>
* Gian-Carlo Pascutto <gpascutto@mozilla.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 MPL, 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 MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "ChunkSet.h"
namespace mozilla {
namespace safebrowsing {
nsresult
ChunkSet::Serialize(nsACString& aChunkStr)
{
aChunkStr.Truncate();
PRUint32 i = 0;
while (i < mChunks.Length()) {
if (i != 0) {
aChunkStr.Append(',');
}
aChunkStr.AppendInt((PRInt32)mChunks[i]);
PRUint32 first = i;
PRUint32 last = first;
i++;
while (i < mChunks.Length() && (mChunks[i] == mChunks[i - 1] + 1 || mChunks[i] == mChunks[i - 1])) {
last = i++;
}
if (last != first) {
aChunkStr.Append('-');
aChunkStr.AppendInt((PRInt32)mChunks[last]);
}
}
return NS_OK;
}
nsresult
ChunkSet::Set(PRUint32 aChunk)
{
PRUint32 idx = mChunks.BinaryIndexOf(aChunk);
if (idx == nsTArray<uint32>::NoIndex) {
mChunks.InsertElementSorted(aChunk);
}
return NS_OK;
}
nsresult
ChunkSet::Unset(PRUint32 aChunk)
{
mChunks.RemoveElementSorted(aChunk);
return NS_OK;
}
bool
ChunkSet::Has(PRUint32 aChunk) const
{
return mChunks.BinaryIndexOf(aChunk) != nsTArray<uint32>::NoIndex;
}
nsresult
ChunkSet::Merge(const ChunkSet& aOther)
{
const uint32 *dupIter = aOther.mChunks.Elements();
const uint32 *end = aOther.mChunks.Elements() + aOther.mChunks.Length();
for (const uint32 *iter = dupIter; iter != end; iter++) {
nsresult rv = Set(*iter);
NS_ENSURE_SUCCESS(rv, rv);
}
return NS_OK;
}
nsresult
ChunkSet::Remove(const ChunkSet& aOther)
{
uint32 *addIter = mChunks.Elements();
uint32 *end = mChunks.Elements() + mChunks.Length();
for (uint32 *iter = addIter; iter != end; iter++) {
if (!aOther.Has(*iter)) {
*addIter = *iter;
addIter++;
}
}
mChunks.SetLength(addIter - mChunks.Elements());
return NS_OK;
}
void
ChunkSet::Clear()
{
mChunks.Clear();
}
}
}