1/*
2 * Copyright (C) 2010 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#ifndef _MTP_STRING_BUFFER_H
18#define _MTP_STRING_BUFFER_H
19
20#include <stdint.h>
21
22// Max Character number of a MTP String
23#define MTP_STRING_MAX_CHARACTER_NUMBER             255
24
25namespace android {
26
27class MtpDataPacket;
28
29// Represents a utf8 string, with a maximum of 255 characters
30class MtpStringBuffer {
31
32private:
33    // mBuffer contains string in UTF8 format
34    // maximum 3 bytes/character, with 1 extra for zero termination
35    uint8_t         mBuffer[MTP_STRING_MAX_CHARACTER_NUMBER * 3 + 1];
36    int             mCharCount;
37    int             mByteCount;
38
39public:
40                    MtpStringBuffer();
41                    MtpStringBuffer(const char* src);
42                    MtpStringBuffer(const uint16_t* src);
43                    MtpStringBuffer(const MtpStringBuffer& src);
44    virtual         ~MtpStringBuffer();
45
46    void            set(const char* src);
47    void            set(const uint16_t* src);
48
49    bool            readFromPacket(MtpDataPacket* packet);
50    void            writeToPacket(MtpDataPacket* packet) const;
51
52    inline int      getCharCount() const { return mCharCount; }
53    inline int      getByteCount() const { return mByteCount; }
54
55	inline operator const char*() const { return (const char *)mBuffer; }
56};
57
58}; // namespace android
59
60#endif // _MTP_STRING_BUFFER_H
61