1/*
2 * Copyright (C) 2009 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17//
18// Sortable array of strings.  STL-ish, but STL-free.
19//
20#ifndef _LIBS_MEDIA_STRING_ARRAY_H
21#define _LIBS_MEDIA_STRING_ARRAY_H
22
23#include <stdlib.h>
24#include <string.h>
25
26namespace android {
27
28//
29// An expanding array of strings.  Add, get, sort, delete.
30//
31class StringArray {
32public:
33    StringArray();
34    virtual ~StringArray();
35
36    //
37    // Add a string.  A copy of the string is made.
38    //
39    bool push_back(const char* str);
40
41    //
42    // Delete an entry.
43    //
44    void erase(int idx);
45
46    //
47    // Sort the array.
48    //
49    void sort(int (*compare)(const void*, const void*));
50
51    //
52    // Pass this to the sort routine to do an ascending alphabetical sort.
53    //
54    static int cmpAscendingAlpha(const void* pstr1, const void* pstr2);
55
56    //
57    // Get the #of items in the array.
58    //
59    inline int size(void) const { return mCurrent; }
60
61    //
62    // Return entry N.
63    // [should use operator[] here]
64    //
65    const char* getEntry(int idx) const {
66        return (unsigned(idx) >= unsigned(mCurrent)) ? NULL : mArray[idx];
67    }
68
69    //
70    // Set entry N to specified string.
71    // [should use operator[] here]
72    //
73    void setEntry(int idx, const char* str);
74
75private:
76    int     mMax;
77    int     mCurrent;
78    char**  mArray;
79};
80
81}; // namespace android
82
83#endif // _LIBS_MEDIA_STRING_ARRAY_H
84