henrike@webrtc.org | f7795df | 2014-05-13 18:00:26 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2004 The WebRTC Project Authors. All rights reserved. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license |
| 5 | * that can be found in the LICENSE file in the root of the source |
| 6 | * tree. An additional intellectual property rights grant can be found |
| 7 | * in the file PATENTS. All contributing project authors may |
| 8 | * be found in the AUTHORS file in the root of the source tree. |
| 9 | */ |
| 10 | |
| 11 | #ifndef WEBRTC_BASE_UNIXFILESYSTEM_H_ |
| 12 | #define WEBRTC_BASE_UNIXFILESYSTEM_H_ |
| 13 | |
| 14 | #include <sys/types.h> |
| 15 | |
| 16 | #include "webrtc/base/fileutils.h" |
| 17 | |
| 18 | namespace rtc { |
| 19 | |
| 20 | class UnixFilesystem : public FilesystemInterface { |
| 21 | public: |
| 22 | UnixFilesystem(); |
| 23 | virtual ~UnixFilesystem(); |
| 24 | |
| 25 | #if defined(WEBRTC_ANDROID) || defined(WEBRTC_IOS) |
| 26 | // Android does not have a native code API to fetch the app data or temp |
| 27 | // folders. That needs to be passed into this class from Java. Similarly, iOS |
| 28 | // only supports an Objective-C API for fetching the folder locations, so that |
| 29 | // needs to be passed in here from Objective-C. Or at least that used to be |
| 30 | // the case; now the ctor will do the work if necessary and possible. |
| 31 | // TODO(fischman): add an Android version that uses JNI and drop the |
| 32 | // SetApp*Folder() APIs once external users stop using them. |
| 33 | static void SetAppDataFolder(const std::string& folder); |
| 34 | static void SetAppTempFolder(const std::string& folder); |
| 35 | #endif |
| 36 | |
| 37 | // Opens a file. Returns an open StreamInterface if function succeeds. |
| 38 | // Otherwise, returns NULL. |
| 39 | virtual FileStream *OpenFile(const Pathname &filename, |
| 40 | const std::string &mode); |
| 41 | |
| 42 | // Atomically creates an empty file accessible only to the current user if one |
| 43 | // does not already exist at the given path, otherwise fails. |
| 44 | virtual bool CreatePrivateFile(const Pathname &filename); |
| 45 | |
| 46 | // This will attempt to delete the file located at filename. |
| 47 | // It will fail with VERIY if you pass it a non-existant file, or a directory. |
| 48 | virtual bool DeleteFile(const Pathname &filename); |
| 49 | |
| 50 | // This will attempt to delete the folder located at 'folder' |
| 51 | // It ASSERTs and returns false if you pass it a non-existant folder or a |
| 52 | // plain file. |
| 53 | virtual bool DeleteEmptyFolder(const Pathname &folder); |
| 54 | |
| 55 | // Creates a directory. This will call itself recursively to create /foo/bar |
| 56 | // even if /foo does not exist. All created directories are created with the |
| 57 | // given mode. |
| 58 | // Returns TRUE if function succeeds |
| 59 | virtual bool CreateFolder(const Pathname &pathname, mode_t mode); |
| 60 | |
| 61 | // As above, with mode = 0755. |
| 62 | virtual bool CreateFolder(const Pathname &pathname); |
| 63 | |
| 64 | // This moves a file from old_path to new_path, where "file" can be a plain |
| 65 | // file or directory, which will be moved recursively. |
| 66 | // Returns true if function succeeds. |
| 67 | virtual bool MoveFile(const Pathname &old_path, const Pathname &new_path); |
| 68 | virtual bool MoveFolder(const Pathname &old_path, const Pathname &new_path); |
| 69 | |
| 70 | // This copies a file from old_path to _new_path where "file" can be a plain |
| 71 | // file or directory, which will be copied recursively. |
| 72 | // Returns true if function succeeds |
| 73 | virtual bool CopyFile(const Pathname &old_path, const Pathname &new_path); |
| 74 | |
| 75 | // Returns true if a pathname is a directory |
| 76 | virtual bool IsFolder(const Pathname& pathname); |
| 77 | |
| 78 | // Returns true if pathname represents a temporary location on the system. |
| 79 | virtual bool IsTemporaryPath(const Pathname& pathname); |
| 80 | |
| 81 | // Returns true of pathname represents an existing file |
| 82 | virtual bool IsFile(const Pathname& pathname); |
| 83 | |
| 84 | // Returns true if pathname refers to no filesystem object, every parent |
| 85 | // directory either exists, or is also absent. |
| 86 | virtual bool IsAbsent(const Pathname& pathname); |
| 87 | |
| 88 | virtual std::string TempFilename(const Pathname &dir, |
| 89 | const std::string &prefix); |
| 90 | |
| 91 | // A folder appropriate for storing temporary files (Contents are |
| 92 | // automatically deleted when the program exists) |
| 93 | virtual bool GetTemporaryFolder(Pathname &path, bool create, |
| 94 | const std::string *append); |
| 95 | |
| 96 | virtual bool GetFileSize(const Pathname& path, size_t* size); |
| 97 | virtual bool GetFileTime(const Pathname& path, FileTimeType which, |
| 98 | time_t* time); |
| 99 | |
| 100 | // Returns the path to the running application. |
| 101 | virtual bool GetAppPathname(Pathname* path); |
| 102 | |
| 103 | virtual bool GetAppDataFolder(Pathname* path, bool per_user); |
| 104 | |
| 105 | // Get a temporary folder that is unique to the current user and application. |
| 106 | virtual bool GetAppTempFolder(Pathname* path); |
| 107 | |
| 108 | virtual bool GetDiskFreeSpace(const Pathname& path, int64 *freebytes); |
| 109 | |
| 110 | // Returns the absolute path of the current directory. |
| 111 | virtual Pathname GetCurrentDirectory(); |
| 112 | |
| 113 | private: |
| 114 | #if defined(WEBRTC_ANDROID) || defined(WEBRTC_IOS) |
| 115 | static char* provided_app_data_folder_; |
| 116 | static char* provided_app_temp_folder_; |
| 117 | #else |
| 118 | static char* app_temp_path_; |
| 119 | #endif |
| 120 | |
| 121 | static char* CopyString(const std::string& str); |
| 122 | }; |
| 123 | |
| 124 | } // namespace rtc |
| 125 | |
| 126 | #endif // WEBRTC_BASE_UNIXFILESYSTEM_H_ |