mirror of
https://github.com/mozilla/gecko-dev.git
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478 lines
17 KiB
Plaintext
478 lines
17 KiB
Plaintext
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsISupports.idl"
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%{C++
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struct PRFileDesc;
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struct PRLibrary;
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#include <stdio.h>
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%}
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[ptr] native PRFileDescStar(PRFileDesc);
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[ptr] native PRLibraryStar(PRLibrary);
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[ptr] native FILE(FILE);
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interface nsISimpleEnumerator;
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/**
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* An nsIFile is an abstract representation of a filename. It manages
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* filename encoding issues, pathname component separators ('/' vs. '\\'
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* vs. ':') and weird stuff like differing volumes with identical names, as
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* on pre-Darwin Macintoshes.
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*
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* This file has long introduced itself to new hackers with this opening
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* paragraph:
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*
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* This is the only correct cross-platform way to specify a file.
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* Strings are not such a way. If you grew up on windows or unix, you
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* may think they are. Welcome to reality.
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*
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* While taking the pose struck here to heart would be uncalled for, one
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* may safely conclude that writing cross-platform code is an embittering
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* experience.
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*
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* All methods with string parameters have two forms. The preferred
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* form operates on UCS-2 encoded characters strings. An alternate
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* form operates on characters strings encoded in the "native" charset.
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*
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* A string containing characters encoded in the native charset cannot
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* be safely passed to javascript via xpconnect. Therefore, the "native
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* methods" are not scriptable.
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*/
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[scriptable, uuid(272a5020-64f5-485c-a8c4-44b2882ae0a2), builtinclass]
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interface nsIFile : nsISupports
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{
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/**
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* Create Types
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*
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* NORMAL_FILE_TYPE - A normal file.
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* DIRECTORY_TYPE - A directory/folder.
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*/
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const unsigned long NORMAL_FILE_TYPE = 0;
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const unsigned long DIRECTORY_TYPE = 1;
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/**
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* append[Native]
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*
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* This function is used for constructing a descendent of the
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* current nsIFile.
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*
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* @param node
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* A string which is intended to be a child node of the nsIFile.
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* For the |appendNative| method, the node must be in the native
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* filesystem charset.
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*/
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void append(in AString node);
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[noscript] void appendNative(in ACString node);
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/**
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* Normalize the pathName (e.g. removing .. and . components on Unix).
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*/
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void normalize();
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/**
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* create
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*
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* This function will create a new file or directory in the
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* file system. Any nodes that have not been created or
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* resolved, will be. If the file or directory already
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* exists create() will return NS_ERROR_FILE_ALREADY_EXISTS.
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*
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* @param type
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* This specifies the type of file system object
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* to be made. The only two types at this time
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* are file and directory which are defined above.
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* If the type is unrecongnized, we will return an
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* error (NS_ERROR_FILE_UNKNOWN_TYPE).
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*
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* @param permissions
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* The unix style octal permissions. This may
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* be ignored on systems that do not need to do
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* permissions.
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*/
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void create(in unsigned long type, in unsigned long permissions);
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/**
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* Accessor to the leaf name of the file itself.
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* For the |nativeLeafName| method, the nativeLeafName must
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* be in the native filesystem charset.
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*/
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attribute AString leafName;
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[noscript] attribute ACString nativeLeafName;
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/**
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* copyTo[Native]
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*
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* This will copy this file to the specified newParentDir.
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* If a newName is specified, the file will be renamed.
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* If 'this' is not created we will return an error
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* (NS_ERROR_FILE_TARGET_DOES_NOT_EXIST).
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*
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* copyTo may fail if the file already exists in the destination
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* directory.
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*
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* copyTo will NOT resolve aliases/shortcuts during the copy.
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*
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* @param newParentDir
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* This param is the destination directory. If the
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* newParentDir is null, copyTo() will use the parent
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* directory of this file. If the newParentDir is not
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* empty and is not a directory, an error will be
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* returned (NS_ERROR_FILE_DESTINATION_NOT_DIR). For the
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* |CopyToNative| method, the newName must be in the
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* native filesystem charset.
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*
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* @param newName
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* This param allows you to specify a new name for
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* the file to be copied. This param may be empty, in
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* which case the current leaf name will be used.
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*/
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void copyTo(in nsIFile newParentDir, in AString newName);
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[noscript] void CopyToNative(in nsIFile newParentDir, in ACString newName);
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/**
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* copyToFollowingLinks[Native]
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*
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* This function is identical to copyTo with the exception that,
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* as the name implies, it follows symbolic links. The XP_UNIX
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* implementation always follow symbolic links when copying. For
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* the |CopyToFollowingLinks| method, the newName must be in the
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* native filesystem charset.
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*/
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void copyToFollowingLinks(in nsIFile newParentDir, in AString newName);
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[noscript] void copyToFollowingLinksNative(in nsIFile newParentDir, in ACString newName);
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/**
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* moveTo[Native]
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*
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* A method to move this file or directory to newParentDir.
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* If a newName is specified, the file or directory will be renamed.
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* If 'this' is not created we will return an error
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* (NS_ERROR_FILE_TARGET_DOES_NOT_EXIST).
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* If 'this' is a file, and the destination file already exists, moveTo
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* will replace the old file.
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* This object is updated to refer to the new file.
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*
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* moveTo will NOT resolve aliases/shortcuts during the copy.
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* moveTo will do the right thing and allow copies across volumes.
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* moveTo will return an error (NS_ERROR_FILE_DIR_NOT_EMPTY) if 'this' is
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* a directory and the destination directory is not empty.
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* moveTo will return an error (NS_ERROR_FILE_ACCESS_DENIED) if 'this' is
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* a directory and the destination directory is not writable.
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*
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* @param newParentDir
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* This param is the destination directory. If the
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* newParentDir is empty, moveTo() will rename the file
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* within its current directory. If the newParentDir is
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* not empty and does not name a directory, an error will
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* be returned (NS_ERROR_FILE_DESTINATION_NOT_DIR). For
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* the |moveToNative| method, the newName must be in the
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* native filesystem charset.
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*
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* @param newName
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* This param allows you to specify a new name for
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* the file to be moved. This param may be empty, in
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* which case the current leaf name will be used.
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*/
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void moveTo(in nsIFile newParentDir, in AString newName);
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[noscript] void moveToNative(in nsIFile newParentDir, in ACString newName);
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/**
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* This will try to delete this file. The 'recursive' flag
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* must be PR_TRUE to delete directories which are not empty.
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*
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* This will not resolve any symlinks.
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*/
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void remove(in boolean recursive);
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/**
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* Attributes of nsIFile.
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*/
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attribute unsigned long permissions;
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attribute unsigned long permissionsOfLink;
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/**
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* File Times are to be in milliseconds from
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* midnight (00:00:00), January 1, 1970 Greenwich Mean
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* Time (GMT).
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*/
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attribute PRTime lastModifiedTime;
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attribute PRTime lastModifiedTimeOfLink;
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/**
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* WARNING! On the Mac, getting/setting the file size with nsIFile
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* only deals with the size of the data fork. If you need to
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* know the size of the combined data and resource forks use the
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* GetFileSizeWithResFork() method defined on nsILocalFileMac.
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*/
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attribute int64_t fileSize;
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readonly attribute int64_t fileSizeOfLink;
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/**
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* target & path
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*
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* Accessor to the string path. The native version of these
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* strings are not guaranteed to be a usable path to pass to
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* NSPR or the C stdlib. There are problems that affect
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* platforms on which a path does not fully specify a file
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* because two volumes can have the same name (e.g., mac).
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* This is solved by holding "private", native data in the
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* nsIFile implementation. This native data is lost when
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* you convert to a string.
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*
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* DO NOT PASS TO USE WITH NSPR OR STDLIB!
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*
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* target
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* Find out what the symlink points at. Will give error
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* (NS_ERROR_FILE_INVALID_PATH) if not a symlink.
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*
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* path
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* Find out what the nsIFile points at.
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*
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* Note that the ACString attributes are returned in the
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* native filesystem charset.
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*
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*/
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readonly attribute AString target;
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[noscript] readonly attribute ACString nativeTarget;
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readonly attribute AString path;
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[noscript] readonly attribute ACString nativePath;
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boolean exists();
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boolean isWritable();
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boolean isReadable();
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boolean isExecutable();
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boolean isHidden();
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boolean isDirectory();
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boolean isFile();
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boolean isSymlink();
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/**
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* Not a regular file, not a directory, not a symlink.
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*/
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boolean isSpecial();
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/**
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* createUnique
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*
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* This function will create a new file or directory in the
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* file system. Any nodes that have not been created or
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* resolved, will be. If this file already exists, we try
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* variations on the leaf name "suggestedName" until we find
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* one that did not already exist.
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*
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* If the search for nonexistent files takes too long
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* (thousands of the variants already exist), we give up and
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* return NS_ERROR_FILE_TOO_BIG.
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*
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* @param type
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* This specifies the type of file system object
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* to be made. The only two types at this time
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* are file and directory which are defined above.
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* If the type is unrecongnized, we will return an
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* error (NS_ERROR_FILE_UNKNOWN_TYPE).
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*
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* @param permissions
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* The unix style octal permissions. This may
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* be ignored on systems that do not need to do
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* permissions.
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*/
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void createUnique(in unsigned long type, in unsigned long permissions);
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/**
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* clone()
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*
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* This function will allocate and initialize a nsIFile object to the
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* exact location of the |this| nsIFile.
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*
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* @param file
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* A nsIFile which this object will be initialize
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* with.
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*
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*/
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nsIFile clone();
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/**
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* Will determine if the inFile equals this.
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*/
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boolean equals(in nsIFile inFile);
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/**
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* Will determine if inFile is a descendant of this file
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* If |recur| is true, look in subdirectories too
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*/
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boolean contains(in nsIFile inFile, in boolean recur);
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/**
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* Parent will be null when this is at the top of the volume.
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*/
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readonly attribute nsIFile parent;
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/**
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* Returns an enumeration of the elements in a directory. Each
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* element in the enumeration is an nsIFile.
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*
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* @throws NS_ERROR_FILE_NOT_DIRECTORY if the current nsIFile does
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* not specify a directory.
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*/
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readonly attribute nsISimpleEnumerator directoryEntries;
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/**
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* initWith[Native]Path
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*
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* This function will initialize the nsIFile object. Any
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* internal state information will be reset.
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*
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* @param filePath
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* A string which specifies a full file path to a
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* location. Relative paths will be treated as an
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* error (NS_ERROR_FILE_UNRECOGNIZED_PATH). For
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* initWithNativePath, the filePath must be in the native
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* filesystem charset.
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*/
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void initWithPath(in AString filePath);
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[noscript] void initWithNativePath(in ACString filePath);
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/**
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* initWithFile
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*
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* Initialize this object with another file
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*
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* @param aFile
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* the file this becomes equivalent to
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*/
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void initWithFile(in nsIFile aFile);
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/**
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* followLinks
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*
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* This attribute will determine if the nsLocalFile will auto
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* resolve symbolic links. By default, this value will be false
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* on all non unix systems. On unix, this attribute is effectively
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* a noop.
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*/
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attribute boolean followLinks;
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/**
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* Flag for openNSPRFileDesc(), to hint to the OS that the file will be
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* read sequentially with agressive readahead.
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*/
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const unsigned long OS_READAHEAD = 0x40000000;
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/**
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* Flag for openNSPRFileDesc(). Deprecated and unreliable!
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* Instead use NS_OpenAnonymousTemporaryFile() to create a temporary
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* file which will be deleted upon close!
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*/
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const unsigned long DELETE_ON_CLOSE = 0x80000000;
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/**
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* Return the result of PR_Open on the file. The caller is
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* responsible for calling PR_Close on the result.
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*
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* @param flags the PR_Open flags from prio.h, plus optionally
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* OS_READAHEAD or DELETE_ON_CLOSE. OS_READAHEAD is a hint to the
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* OS that the file will be read sequentially with agressive
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* readahead. DELETE_ON_CLOSE is unreliable on Windows and is deprecated.
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* Instead use NS_OpenAnonymousTemporaryFile() to create a temporary
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* file which will be deleted upon close.
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*/
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[noscript] PRFileDescStar openNSPRFileDesc(in long flags, in long mode);
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/**
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* Return the result of fopen on the file. The caller is
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* responsible for calling fclose on the result.
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*/
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[noscript] FILE openANSIFileDesc(in string mode);
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/**
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* Return the result of PR_LoadLibrary on the file. The caller is
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* responsible for calling PR_UnloadLibrary on the result.
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*/
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[noscript] PRLibraryStar load();
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// number of bytes available on disk to non-superuser
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readonly attribute int64_t diskSpaceAvailable;
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/**
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* appendRelative[Native]Path
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*
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* Append a relative path to the current path of the nsIFile object.
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*
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* @param relativeFilePath
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* relativeFilePath is a native relative path. For security reasons,
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* this cannot contain .. or cannot start with a directory separator.
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* For the |appendRelativeNativePath| method, the relativeFilePath
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* must be in the native filesystem charset.
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*/
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void appendRelativePath(in AString relativeFilePath);
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[noscript] void appendRelativeNativePath(in ACString relativeFilePath);
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/**
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* Accessor to a null terminated string which will specify
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* the file in a persistent manner for disk storage.
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*
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* The character set of this attribute is undefined. DO NOT TRY TO
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* INTERPRET IT AS HUMAN READABLE TEXT!
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*/
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attribute ACString persistentDescriptor;
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/**
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* reveal
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*
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* Ask the operating system to open the folder which contains
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* this file or folder. This routine only works on platforms which
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* support the ability to open a folder and is run async on Windows.
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* This routine must be called on the main.
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*/
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void reveal();
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/**
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* launch
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*
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* Ask the operating system to attempt to open the file.
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* this really just simulates "double clicking" the file on your platform.
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* This routine only works on platforms which support this functionality
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* and is run async on Windows. This routine must be called on the
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* main thread.
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*/
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void launch();
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/**
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* getRelativeDescriptor
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*
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* Returns a relative file path in an opaque, XP format. It is therefore
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* not a native path.
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*
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* The character set of the string returned from this function is
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* undefined. DO NOT TRY TO INTERPRET IT AS HUMAN READABLE TEXT!
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*
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* @param fromFile
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* the file from which the descriptor is relative.
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* There is no defined result if this param is null.
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*/
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ACString getRelativeDescriptor(in nsIFile fromFile);
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/**
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* setRelativeDescriptor
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*
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* Initializes the file to the location relative to fromFile using
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* a string returned by getRelativeDescriptor.
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*
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* @param fromFile
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* the file to which the descriptor is relative
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* @param relative
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* the relative descriptor obtained from getRelativeDescriptor
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*/
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void setRelativeDescriptor(in nsIFile fromFile, in ACString relativeDesc);
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};
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%{C++
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#ifdef MOZILLA_INTERNAL_API
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#include "nsDirectoryServiceUtils.h"
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#endif
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%}
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