You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
114 lines
2.6 KiB
114 lines
2.6 KiB
4 months ago
|
/*
|
||
|
|
* Copyright (C) 2009 The Android Open Source Project
|
||
|
|
*
|
||
|
|
* Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
|
||
|
|
*
|
||
|
|
* Unless required by applicable law or agreed to in writing, software
|
||
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
* See the License for the specific language governing permissions and
|
||
|
|
* limitations under the License.
|
||
|
|
*/
|
||
|
|
|
||
|
|
//
|
||
|
|
// Sortable array of strings. STL-ish, but STL-free.
|
||
|
|
//
|
||
|
|
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <string.h>
|
||
|
|
|
||
|
|
#include <media/StringArray.h>
|
||
|
|
|
||
|
|
namespace android {
|
||
|
|
|
||
|
|
//
|
||
|
|
// An expanding array of strings. Add, get, sort, delete.
|
||
|
|
//
|
||
|
|
StringArray::StringArray()
|
||
|
|
: mMax(0), mCurrent(0), mArray(NULL)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
StringArray:: ~StringArray() {
|
||
|
|
for (int i = 0; i < mCurrent; i++)
|
||
|
|
delete[] mArray[i];
|
||
|
|
delete[] mArray;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Add a string. A copy of the string is made.
|
||
|
|
//
|
||
|
|
bool StringArray::push_back(const char* str) {
|
||
|
|
if (mCurrent >= mMax) {
|
||
|
|
char** tmp;
|
||
|
|
|
||
|
|
if (mMax == 0)
|
||
|
|
mMax = 16; // initial storage
|
||
|
|
else
|
||
|
|
mMax *= 2;
|
||
|
|
|
||
|
|
tmp = new char*[mMax];
|
||
|
|
if (tmp == NULL)
|
||
|
|
return false;
|
||
|
|
|
||
|
|
memcpy(tmp, mArray, mCurrent * sizeof(char*));
|
||
|
|
delete[] mArray;
|
||
|
|
mArray = tmp;
|
||
|
|
}
|
||
|
|
|
||
|
|
int len = strlen(str);
|
||
|
|
mArray[mCurrent] = new char[len+1];
|
||
|
|
memcpy(mArray[mCurrent], str, len+1);
|
||
|
|
mCurrent++;
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Delete an entry.
|
||
|
|
//
|
||
|
|
void StringArray::erase(int idx) {
|
||
|
|
if (idx < 0 || idx >= mCurrent)
|
||
|
|
return;
|
||
|
|
delete[] mArray[idx];
|
||
|
|
if (idx < mCurrent-1) {
|
||
|
|
memmove(&mArray[idx], &mArray[idx+1],
|
||
|
|
(mCurrent-1 - idx) * sizeof(char*));
|
||
|
|
}
|
||
|
|
mCurrent--;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Sort the array.
|
||
|
|
//
|
||
|
|
void StringArray::sort(int (*compare)(const void*, const void*)) {
|
||
|
|
qsort(mArray, mCurrent, sizeof(char*), compare);
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Pass this to the sort routine to do an ascending alphabetical sort.
|
||
|
|
//
|
||
|
|
int StringArray::cmpAscendingAlpha(const void* pstr1, const void* pstr2) {
|
||
|
|
return strcmp(*(const char**)pstr1, *(const char**)pstr2);
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Set entry N to specified string.
|
||
|
|
// [should use operator[] here]
|
||
|
|
//
|
||
|
|
void StringArray::setEntry(int idx, const char* str) {
|
||
|
|
if (idx < 0 || idx >= mCurrent)
|
||
|
|
return;
|
||
|
|
delete[] mArray[idx];
|
||
|
|
int len = strlen(str);
|
||
|
|
mArray[idx] = new char[len+1];
|
||
|
|
memcpy(mArray[idx], str, len+1);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
} // namespace android
|