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
|
/* Copyright (c) 2012 The Chromium Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
/**
* This file defines the API to create a file reference or "weak pointer" to a
* file in a file system.
*/
label Chrome {
M14 = 1.0,
M28 = 1.1
};
/**
* The <code>PPB_FileRef</code> struct represents a "weak pointer" to a file in
* a file system. This struct contains a <code>PP_FileSystemType</code>
* identifier and a file path string.
*/
interface PPB_FileRef {
/**
* Create() creates a weak pointer to a file in the given file system. File
* paths are POSIX style.
*
* @param[in] resource A <code>PP_Resource</code> corresponding to a file
* system.
* @param[in] path A path to the file.
*
* @return A <code>PP_Resource</code> corresponding to a file reference if
* successful or 0 if the path is malformed.
*/
PP_Resource Create([in] PP_Resource file_system, [in] str_t path);
/**
* IsFileRef() determines if the provided resource is a file reference.
*
* @param[in] resource A <code>PP_Resource</code> corresponding to a file
* reference.
*
* @return <code>PP_TRUE</code> if the resource is a
* <code>PPB_FileRef</code>, <code>PP_FALSE</code> if the resource is
* invalid or some type other than <code>PPB_FileRef</code>.
*/
PP_Bool IsFileRef([in] PP_Resource resource);
/**
* GetFileSystemType() returns the type of the file system.
*
* @param[in] file_ref A <code>PP_Resource</code> corresponding to a file
* reference.
*
* @return A <code>PP_FileSystemType</code> with the file system type if
* valid or <code>PP_FILESYSTEMTYPE_INVALID</code> if the provided resource
* is not a valid file reference.
*/
PP_FileSystemType GetFileSystemType([in] PP_Resource file_ref);
/**
* GetName() returns the name of the file.
*
* @param[in] file_ref A <code>PP_Resource</code> corresponding to a file
* reference.
*
* @return A <code>PP_Var</code> containing the name of the file. The value
* returned by this function does not include any path components (such as
* the name of the parent directory, for example). It is just the name of the
* file. Use GetPath() to get the full file path.
*/
PP_Var GetName([in] PP_Resource file_ref);
/**
* GetPath() returns the absolute path of the file.
*
* @param[in] file_ref A <code>PP_Resource</code> corresponding to a file
* reference.
*
* @return A <code>PP_Var</code> containing the absolute path of the file.
* This function fails if the file system type is
* <code>PP_FileSystemType_External</code>.
*/
PP_Var GetPath([in] PP_Resource file_ref);
/**
* GetParent() returns the parent directory of this file. If
* <code>file_ref</code> points to the root of the filesystem, then the root
* is returned.
*
* @param[in] file_ref A <code>PP_Resource</code> corresponding to a file
* reference.
*
* @return A <code>PP_Resource</code> containing the parent directory of the
* file. This function fails if the file system type is
* <code>PP_FileSystemType_External</code>.
*/
PP_Resource GetParent([in] PP_Resource file_ref);
/**
* MakeDirectory() makes a new directory in the file system as well as any
* parent directories if the <code>make_ancestors</code> argument is
* <code>PP_TRUE</code>. It is not valid to make a directory in the external
* file system.
*
* @param[in] file_ref A <code>PP_Resource</code> corresponding to a file
* reference.
* @param[in] make_ancestors A <code>PP_Bool</code> set to
* <code>PP_TRUE</code> to make ancestor directories or <code>PP_FALSE</code>
* if ancestor directories are not needed.
*
* @return An int32_t containing an error code from <code>pp_errors.h</code>.
* Fails if the directory already exists or if ancestor directories do not
* exist and <code>make_ancestors</code> was not passed as
* <code>PP_TRUE</code>.
*/
int32_t MakeDirectory([in] PP_Resource directory_ref,
[in] PP_Bool make_ancestors,
[in] PP_CompletionCallback callback);
/**
* Touch() Updates time stamps for a file. You must have write access to the
* file if it exists in the external filesystem.
*
* @param[in] file_ref A <code>PP_Resource</code> corresponding to a file
* reference.
* @param[in] last_access_time The last time the file was accessed.
* @param[in] last_modified_time The last time the file was modified.
* @param[in] callback A <code>PP_CompletionCallback</code> to be called upon
* completion of Touch().
*
* @return An int32_t containing an error code from <code>pp_errors.h</code>.
*/
int32_t Touch([in] PP_Resource file_ref,
[in] PP_Time last_access_time,
[in] PP_Time last_modified_time,
[in] PP_CompletionCallback callback);
/**
* Delete() deletes a file or directory. If <code>file_ref</code> refers to
* a directory, then the directory must be empty. It is an error to delete a
* file or directory that is in use. It is not valid to delete a file in
* the external file system.
*
* @param[in] file_ref A <code>PP_Resource</code> corresponding to a file
* reference.
* @param[in] callback A <code>PP_CompletionCallback</code> to be called upon
* completion of Delete().
*
* @return An int32_t containing an error code from <code>pp_errors.h</code>.
*/
int32_t Delete([in] PP_Resource file_ref,
[in] PP_CompletionCallback callback);
/**
* Rename() renames a file or directory. Arguments <code>file_ref</code> and
* <code>new_file_ref</code> must both refer to files in the same file
* system. It is an error to rename a file or directory that is in use. It
* is not valid to rename a file in the external file system.
*
* @param[in] file_ref A <code>PP_Resource</code> corresponding to a file
* reference.
* @param[in] new_file_ref A <code>PP_Resource</code> corresponding to a new
* file reference.
* @param[in] callback A <code>PP_CompletionCallback</code> to be called upon
* completion of Rename().
*
* @return An int32_t containing an error code from <code>pp_errors.h</code>.
*/
int32_t Rename([in] PP_Resource file_ref,
[in] PP_Resource new_file_ref,
[in] PP_CompletionCallback callback);
/*
* Query() queries info about a file or directory. You must have access to
* read this file or directory if it exists in the external filesystem.
*
* @param[in] file_ref A <code>PP_Resource</code> corresponding to a file
* reference.
* @param[out] info A pointer to a <code>PP_FileInfo</code> which will be
* populated with information about the file or directory.
* @param[in] callback A <code>PP_CompletionCallback</code> to be called upon
* completion of Query().
*
* @return An int32_t containing an error code from <code>pp_errors.h</code>.
*/
[version=1.1]
int32_t Query([in] PP_Resource file_ref,
[out] PP_FileInfo info,
[in] PP_CompletionCallback callback);
};
|
