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#ifndef PINYINIME_INCLUDE_UTF16READER_H__
18#define PINYINIME_INCLUDE_UTF16READER_H__
19
20#include <stdio.h>
21#include "./utf16char.h"
22
23namespace ime_pinyin {
24
25class Utf16Reader {
26 private:
27  FILE *fp_;
28  char16 *buffer_;
29  size_t buffer_total_len_;
30  size_t buffer_next_pos_;
31
32  // Always less than buffer_total_len_ - buffer_next_pos_
33  size_t buffer_valid_len_;
34
35 public:
36  Utf16Reader();
37  ~Utf16Reader();
38
39  // filename is the name of the file to open.
40  // buffer_len specifies how long buffer should be allocated to speed up the
41  // future reading
42  bool open(const char* filename, size_t buffer_len);
43  char16* readline(char16* read_buf, size_t max_len);
44  bool close();
45};
46}
47
48#endif  // PINYINIME_INCLUDE_UTF16READER_H__
49