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
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
|
// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <memory>
#include "common/common_types.h"
#include "common/string_util.h"
#include "common/bit_field.h"
#include "core/file_sys/file_backend.h"
#include "core/file_sys/directory_backend.h"
#include "core/mem_map.h"
#include "core/hle/kernel/kernel.h"
////////////////////////////////////////////////////////////////////////////////////////////////////
// FileSys namespace
namespace FileSys {
// Path string type
enum LowPathType : u32 {
Invalid = 0,
Empty = 1,
Binary = 2,
Char = 3,
Wchar = 4
};
union Mode {
u32 hex;
BitField<0, 1, u32> read_flag;
BitField<1, 1, u32> write_flag;
BitField<2, 1, u32> create_flag;
};
class Path {
public:
Path():
type(Invalid)
{
}
Path(LowPathType type, u32 size, u32 pointer):
type(type)
{
switch (type) {
case Binary:
{
u8* data = Memory::GetPointer(pointer);
binary = std::vector<u8>(data, data + size);
break;
}
case Char:
{
const char* data = reinterpret_cast<const char*>(Memory::GetPointer(pointer));
string = std::string(data, size - 1); // Data is always null-terminated.
break;
}
case Wchar:
{
const char16_t* data = reinterpret_cast<const char16_t*>(Memory::GetPointer(pointer));
u16str = std::u16string(data, size/2 - 1); // Data is always null-terminated.
break;
}
default:
break;
}
}
LowPathType GetType() const {
return type;
}
/**
* Gets the string representation of the path for debugging
* @return String representation of the path for debugging
*/
const std::string DebugStr() const {
switch (GetType()) {
case Invalid:
return "[Invalid]";
case Empty:
return "[Empty]";
case Binary:
{
std::stringstream res;
res << "[Binary: ";
for (unsigned byte : binary)
res << std::hex << std::setw(2) << std::setfill('0') << byte;
res << ']';
return res.str();
}
case Char:
return "[Char: " + AsString() + ']';
case Wchar:
return "[Wchar: " + AsString() + ']';
default:
// TODO(yuriks): Add assert
LOG_ERROR(Service_FS, "LowPathType cannot be converted to string!");
return {};
}
}
const std::string AsString() const {
switch (GetType()) {
case Char:
return string;
case Wchar:
return Common::UTF16ToUTF8(u16str);
case Empty:
return {};
default:
// TODO(yuriks): Add assert
LOG_ERROR(Service_FS, "LowPathType cannot be converted to string!");
return {};
}
}
const std::u16string AsU16Str() const {
switch (GetType()) {
case Char:
return Common::UTF8ToUTF16(string);
case Wchar:
return u16str;
case Empty:
return {};
default:
// TODO(yuriks): Add assert
LOG_ERROR(Service_FS, "LowPathType cannot be converted to u16string!");
return {};
}
}
const std::vector<u8> AsBinary() const {
switch (GetType()) {
case Binary:
return binary;
case Char:
return std::vector<u8>(string.begin(), string.end());
case Wchar:
return std::vector<u8>(u16str.begin(), u16str.end());
case Empty:
return {};
default:
// TODO(yuriks): Add assert
LOG_ERROR(Service_FS, "LowPathType cannot be converted to binary!");
return {};
}
}
private:
LowPathType type;
std::vector<u8> binary;
std::string string;
std::u16string u16str;
};
class ArchiveBackend : NonCopyable {
public:
virtual ~ArchiveBackend() { }
/**
* Get a descriptive name for the archive (e.g. "RomFS", "SaveData", etc.)
*/
virtual std::string GetName() const = 0;
/**
* Open a file specified by its path, using the specified mode
* @param path Path relative to the archive
* @param mode Mode to open the file with
* @return Opened file, or nullptr
*/
virtual std::unique_ptr<FileBackend> OpenFile(const Path& path, const Mode mode) const = 0;
/**
* Delete a file specified by its path
* @param path Path relative to the archive
* @return Whether the file could be deleted
*/
virtual bool DeleteFile(const FileSys::Path& path) const = 0;
/**
* Rename a File specified by its path
* @param src_path Source path relative to the archive
* @param dest_path Destination path relative to the archive
* @return Whether rename succeeded
*/
virtual bool RenameFile(const FileSys::Path& src_path, const FileSys::Path& dest_path) const = 0;
/**
* Delete a directory specified by its path
* @param path Path relative to the archive
* @return Whether the directory could be deleted
*/
virtual bool DeleteDirectory(const FileSys::Path& path) const = 0;
/**
* Create a directory specified by its path
* @param path Path relative to the archive
* @return Whether the directory could be created
*/
virtual bool CreateDirectory(const Path& path) const = 0;
/**
* Rename a Directory specified by its path
* @param src_path Source path relative to the archive
* @param dest_path Destination path relative to the archive
* @return Whether rename succeeded
*/
virtual bool RenameDirectory(const FileSys::Path& src_path, const FileSys::Path& dest_path) const = 0;
/**
* Open a directory specified by its path
* @param path Path relative to the archive
* @return Opened directory, or nullptr
*/
virtual std::unique_ptr<DirectoryBackend> OpenDirectory(const Path& path) const = 0;
};
} // namespace FileSys
|
