utf8_reader.h
1 /*
2 ** ClanLib SDK
3 ** Copyright (c) 1997-2016 The ClanLib Team
4 **
5 ** This software is provided 'as-is', without any express or implied
6 ** warranty. In no event will the authors be held liable for any damages
7 ** arising from the use of this software.
8 **
9 ** Permission is granted to anyone to use this software for any purpose,
10 ** including commercial applications, and to alter it and redistribute it
11 ** freely, subject to the following restrictions:
12 **
13 ** 1. The origin of this software must not be misrepresented; you must not
14 ** claim that you wrote the original software. If you use this software
15 ** in a product, an acknowledgment in the product documentation would be
16 ** appreciated but is not required.
17 ** 2. Altered source versions must be plainly marked as such, and must not be
18 ** misrepresented as being the original software.
19 ** 3. This notice may not be removed or altered from any source distribution.
20 **
21 ** Note: Some of the libraries ClanLib may link to may have additional
22 ** requirements or restrictions.
23 **
24 ** File Author(s):
25 **
26 ** Mark Page
27 */
28 
29 #pragma once
30 
31 #include <memory>
32 
33 namespace clan
34 {
37 
38  class UTF8_Reader_Impl;
39 
42  {
43  public:
45  UTF8_Reader(const std::string::value_type *text, std::string::size_type length);
46 
48  bool is_end();
49 
51  unsigned int get_char();
52 
54  std::string::size_type get_char_length();
55 
57  void prev();
58 
60  void next();
61 
63  void move_to_leadbyte();
64 
66  std::string::size_type get_position();
67 
69  void set_position(std::string::size_type position);
70 
71  private:
72  std::string::size_type current_position = 0;
73  std::string::size_type length = 0;
74  const unsigned char *data = nullptr;
75  };
76 
78 }
Definition: clanapp.h:35
void prev()
Moves position to the previous character.
void set_position(std::string::size_type position)
Set the current position of the reader.
bool is_end()
Returns true if the current position is at the end of the string.
void next()
Moves position to the next character.
std::string::size_type get_position()
Get the current position of the reader.
unsigned int get_char()
Get the character at the current position.
std::string::size_type get_char_length()
Returns the length of the current character.
UTF8_Reader(const std::string::value_type *text, std::string::size_type length)
Important: text is not copied by this class and must remain valid during its usage.
void move_to_leadbyte()
Moves position to the lead byte of the character.
UTF8 reader helper functions.
Definition: utf8_reader.h:41