utf8_reader.h Source File - ClanLib SDK
Description: utf8_reader.h Source File

utf8_reader.h
1/*
2** ClanLib SDK
3** Copyright (c) 1997-2020 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
33namespace clan
34{
37
38 class UTF8_Reader_Impl;
39
41 class UTF8_Reader
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}
clan::UTF8_Reader
UTF8 reader helper functions.
Definition utf8_reader.h:42
clan::UTF8_Reader::prev
void prev()
Moves position to the previous character.
clan::UTF8_Reader::get_position
std::string::size_type get_position()
Get the current position of the reader.
clan::UTF8_Reader::next
void next()
Moves position to the next character.
clan::UTF8_Reader::get_char_length
std::string::size_type get_char_length()
Returns the length of the current character.
clan::UTF8_Reader::is_end
bool is_end()
Returns true if the current position is at the end of the string.
clan::UTF8_Reader::get_char
unsigned int get_char()
Get the character at the current position.
clan::UTF8_Reader::set_position
void set_position(std::string::size_type position)
Set the current position of the reader.
clan::UTF8_Reader::UTF8_Reader
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.
clan::UTF8_Reader::move_to_leadbyte
void move_to_leadbyte()
Moves position to the lead byte of the character.
clan
Definition clanapp.h:36