1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing for details. */
#pragma once
#include "cmConfigure.h" // IWYU pragma: keep
#include <cwchar>
#include <locale>
enum class codecvt_Encoding;
class codecvt : public std::codecvt<char, char, mbstate_t>
{
public:
#ifndef CMAKE_BOOTSTRAP
codecvt(codecvt_Encoding e);
protected:
~codecvt() override;
bool do_always_noconv() const noexcept override;
result do_out(mbstate_t& state, const char* from, const char* from_end,
const char*& from_next, char* to, char* to_end,
char*& to_next) const override;
result do_unshift(mbstate_t& state, char* to, char*,
char*& to_next) const override;
int do_max_length() const noexcept override;
int do_encoding() const noexcept override;
private:
// The mbstate_t argument to do_out and do_unshift is responsible
// for storing state between calls. We cannot control the type
// since we want to imbue on standard streams. However, we do
// know that it is a trivial type. Define our own type to overlay
// on it safely with no alignment requirements.
struct State
{
// Buffer bytes we have consumed from a partial codepoint.
char partial[3];
// Number of bytes we have buffered from a partial codepoint.
unsigned char buffered : 4;
// Size of the current codepoint in bytes.
unsigned char size : 4;
};
bool m_noconv;
# if defined(_WIN32)
unsigned int m_codepage;
result Decode(mbstate_t& state, int need, const char*& from_next,
char*& to_next, char* to_end) const;
result DecodePartial(mbstate_t& state, char*& to_next, char* to_end) const;
void BufferPartial(mbstate_t& state, int need, const char*& from_next) const;
# endif
#endif
};
|
