mirror of
https://github.com/mozilla/gecko-dev.git
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417 lines
9.2 KiB
C++
417 lines
9.2 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 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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#include "nsVoidArray.h"
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#include "nsCRT.h"
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#include "nsISizeOfHandler.h"
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#include "nsString.h"
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static PRInt32 kGrowArrayBy = 8;
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nsVoidArray::nsVoidArray()
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{
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mArray = nsnull;
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mArraySize = 0;
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mCount = 0;
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}
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nsVoidArray::nsVoidArray(PRInt32 aCount)
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{
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NS_PRECONDITION(aCount > 0, "bad count");
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mCount = mArraySize = aCount;
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mArray = new void*[mCount];
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nsCRT::memset(mArray, 0, mCount * sizeof(void*));
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}
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nsVoidArray& nsVoidArray::operator=(const nsVoidArray& other)
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{
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if (nsnull != mArray) {
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delete [] mArray;
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}
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PRInt32 otherCount = other.mCount;
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mArraySize = otherCount;
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mCount = otherCount;
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if (otherCount != 0) {
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mArray = new void*[otherCount];
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nsCRT::memcpy(mArray, other.mArray, otherCount * sizeof(void*));
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} else {
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mArray = nsnull;
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}
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return *this;
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}
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nsVoidArray::~nsVoidArray()
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{
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if (nsnull != mArray) {
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delete [] mArray;
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}
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}
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void
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nsVoidArray::SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const
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{
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if (aResult) {
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*aResult = sizeof(*this) + sizeof(void*) * mArraySize;
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}
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}
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void* nsVoidArray::ElementAt(PRInt32 aIndex) const
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{
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if (PRUint32(aIndex) >= PRUint32(mCount)) {
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return nsnull;
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}
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return mArray[aIndex];
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}
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PRInt32 nsVoidArray::IndexOf(void* aPossibleElement) const
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{
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void** ap = mArray;
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void** end = ap + mCount;
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while (ap < end) {
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if (*ap == aPossibleElement) {
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return ap - mArray;
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}
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ap++;
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}
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return -1;
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}
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PRBool nsVoidArray::InsertElementAt(void* aElement, PRInt32 aIndex)
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{
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PRInt32 oldCount = mCount;
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if (PRUint32(aIndex) > PRUint32(oldCount)) {
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// An invalid index causes the insertion to fail
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return PR_FALSE;
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}
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if (oldCount + 1 > mArraySize) {
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// We have to grow the array
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PRInt32 newCount = oldCount + kGrowArrayBy;
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void** newArray = new void*[newCount];
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if (mArray != nsnull && aIndex != 0)
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nsCRT::memcpy(newArray, mArray, aIndex * sizeof(void*));
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PRInt32 slide = oldCount - aIndex;
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if (0 != slide) {
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// Slide data over to make room for the insertion
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nsCRT::memcpy(newArray + aIndex + 1, mArray + aIndex,
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slide * sizeof(void*));
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}
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if (mArray != nsnull)
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delete [] mArray;
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mArray = newArray;
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mArraySize = newCount;
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} else {
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// The array is already large enough
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PRInt32 slide = oldCount - aIndex;
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if (0 != slide) {
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// Slide data over to make room for the insertion
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nsCRT::memmove(mArray + aIndex + 1, mArray + aIndex,
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slide * sizeof(void*));
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}
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}
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mArray[aIndex] = aElement;
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mCount++;
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return PR_TRUE;
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}
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PRBool nsVoidArray::ReplaceElementAt(void* aElement, PRInt32 aIndex)
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{
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if (PRUint32(aIndex) >= PRUint32(mArraySize)) {
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PRInt32 requestedCount = aIndex + 1;
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PRInt32 growDelta = requestedCount - mCount;
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PRInt32 newCount = mCount + (growDelta > kGrowArrayBy ? growDelta : kGrowArrayBy);
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void** newArray = new void*[newCount];
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nsCRT::memset(newArray, 0, newCount * sizeof(void*));
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if (newArray==nsnull)
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return PR_FALSE;
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if (mArray != nsnull && aIndex != 0) {
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nsCRT::memcpy(newArray, mArray, mCount * sizeof(void*));
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if (mArray != nsnull)
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delete [] mArray;
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}
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mArray = newArray;
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mArraySize = newCount;
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}
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mArray[aIndex] = aElement;
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if (aIndex >= mCount)
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mCount = aIndex+1;
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return PR_TRUE;
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}
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PRBool nsVoidArray::RemoveElementAt(PRInt32 aIndex)
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{
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PRInt32 oldCount = mCount;
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if (PRUint32(aIndex) >= PRUint32(oldCount)) {
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// An invalid index causes the replace to fail
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return PR_FALSE;
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}
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// We don't need to move any elements if we're removing the
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// last element in the array
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if (aIndex < (oldCount - 1)) {
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nsCRT::memmove(mArray + aIndex, mArray + aIndex + 1,
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(oldCount - 1 - aIndex) * sizeof(void*));
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}
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mCount--;
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return PR_TRUE;
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}
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PRBool nsVoidArray::RemoveElement(void* aElement)
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{
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void** ep = mArray;
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void** end = ep + mCount;
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while (ep < end) {
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void* e = *ep++;
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if (e == aElement) {
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ep--;
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return RemoveElementAt(PRInt32(ep - mArray));
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}
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}
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return PR_FALSE;
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}
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void nsVoidArray::Clear()
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{
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mCount = 0;
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}
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void nsVoidArray::Compact()
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{
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PRInt32 count = mCount;
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if (mArraySize != count) {
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void** newArray = new void*[count];
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if (nsnull != newArray) {
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nsCRT::memcpy(newArray, mArray, count * sizeof(void*));
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delete [] mArray;
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mArray = newArray;
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mArraySize = count;
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}
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}
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}
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PRBool nsVoidArray::EnumerateForwards(nsVoidArrayEnumFunc aFunc, void* aData)
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{
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PRInt32 index = -1;
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PRBool running = PR_TRUE;
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while (running && (++index < mCount)) {
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running = (*aFunc)(mArray[index], aData);
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}
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return running;
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}
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PRBool nsVoidArray::EnumerateBackwards(nsVoidArrayEnumFunc aFunc, void* aData)
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{
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PRInt32 index = mCount;
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PRBool running = PR_TRUE;
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while (running && (0 <= --index)) {
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running = (*aFunc)(mArray[index], aData);
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}
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return running;
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}
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//----------------------------------------------------------------
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// nsStringArray
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nsStringArray::nsStringArray(void)
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: nsVoidArray()
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{
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}
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nsStringArray::~nsStringArray(void)
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{
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Clear();
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}
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nsStringArray&
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nsStringArray::operator=(const nsStringArray& other)
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{
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if (nsnull != mArray) {
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delete mArray;
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}
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PRInt32 otherCount = other.mCount;
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mArraySize = otherCount;
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mCount = otherCount;
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if (0 < otherCount) {
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mArray = new void*[otherCount];
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while (0 <= --otherCount) {
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nsString* otherString = (nsString*)(other.mArray[otherCount]);
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mArray[otherCount] = new nsString(*otherString);
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}
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} else {
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mArray = nsnull;
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}
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return *this;
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}
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void
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nsStringArray::SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const
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{
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PRUint32 sum = 0;
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nsVoidArray::SizeOf(aHandler, &sum);
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PRInt32 index = mCount;
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while (0 <= --index) {
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nsString* string = (nsString*)mArray[index];
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PRUint32 size;
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string->SizeOf(aHandler, &size);
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sum += size;
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}
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}
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void
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nsStringArray::StringAt(PRInt32 aIndex, nsString& aString) const
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{
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nsString* string = (nsString*)nsVoidArray::ElementAt(aIndex);
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if (nsnull != string) {
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aString = *string;
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}
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else {
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aString.Truncate();
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}
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}
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nsString*
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nsStringArray::StringAt(PRInt32 aIndex) const
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{
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return (nsString*)nsVoidArray::ElementAt(aIndex);
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}
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PRInt32
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nsStringArray::IndexOf(const nsString& aPossibleString) const
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{
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void** ap = mArray;
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void** end = ap + mCount;
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while (ap < end) {
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nsString* string = (nsString*)*ap;
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if (string->Equals(aPossibleString)) {
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return ap - mArray;
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}
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ap++;
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}
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return -1;
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}
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PRInt32
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nsStringArray::IndexOfIgnoreCase(const nsString& aPossibleString) const
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{
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void** ap = mArray;
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void** end = ap + mCount;
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while (ap < end) {
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nsString* string = (nsString*)*ap;
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if (string->EqualsIgnoreCase(aPossibleString)) {
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return ap - mArray;
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}
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ap++;
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}
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return -1;
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}
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PRBool
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nsStringArray::InsertStringAt(const nsString& aString, PRInt32 aIndex)
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{
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nsString* string = new nsString(aString);
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if (nsVoidArray::InsertElementAt(string, aIndex)) {
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return PR_TRUE;
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}
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delete string;
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return PR_FALSE;
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}
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PRBool
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nsStringArray::ReplaceStringAt(const nsString& aString, PRInt32 aIndex)
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{
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nsString* string = (nsString*)nsVoidArray::ElementAt(aIndex);
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if (nsnull != string) {
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*string = aString;
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return PR_TRUE;
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}
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return PR_FALSE;
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}
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PRBool
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nsStringArray::RemoveString(const nsString& aString)
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{
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PRInt32 index = IndexOf(aString);
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if (-1 < index) {
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return RemoveStringAt(index);
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}
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return PR_FALSE;
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}
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PRBool
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nsStringArray::RemoveStringIgnoreCase(const nsString& aString)
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{
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PRInt32 index = IndexOfIgnoreCase(aString);
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if (-1 < index) {
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return RemoveStringAt(index);
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}
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return PR_FALSE;
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}
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PRBool nsStringArray::RemoveStringAt(PRInt32 aIndex)
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{
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nsString* string = StringAt(aIndex);
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if (nsnull != string) {
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nsVoidArray::RemoveElementAt(aIndex);
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delete string;
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return PR_TRUE;
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}
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return PR_FALSE;
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}
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void
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nsStringArray::Clear(void)
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{
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PRInt32 index = mCount;
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while (0 <= --index) {
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nsString* string = (nsString*)mArray[index];
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delete string;
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}
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nsVoidArray::Clear();
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}
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PRBool
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nsStringArray::EnumerateForwards(nsStringArrayEnumFunc aFunc, void* aData)
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{
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PRInt32 index = -1;
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PRBool running = PR_TRUE;
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while (running && (++index < mCount)) {
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running = (*aFunc)(*((nsString*)mArray[index]), aData);
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}
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return running;
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}
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PRBool
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nsStringArray::EnumerateBackwards(nsStringArrayEnumFunc aFunc, void* aData)
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{
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PRInt32 index = mCount;
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PRBool running = PR_TRUE;
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while (running && (0 <= --index)) {
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running = (*aFunc)(*((nsString*)mArray[index]), aData);
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}
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return running;
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}
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