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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsISupports.idl"
#include "nsIDirectoryEnumerator.idl"
%{C++
struct PRFileDesc;
struct PRLibrary;
#include <stdio.h>
#include "mozilla/Path.h"
#include "nsCOMPtr.h"
#include "nsStringFwd.h"
namespace mozilla {
using PathString = nsTString<filesystem::Path::value_type>;
using PathSubstring = nsTSubstring<filesystem::Path::value_type>;
} // namespace mozilla
%}
[ptr] native PRFileDescStar(PRFileDesc);
[ptr] native PRLibraryStar(PRLibrary);
[ptr] native FILE(FILE);
native PathString(mozilla::PathString);
/**
* An nsIFile is an abstract representation of a filename. It manages
* filename encoding issues, pathname component separators ('/' vs. '\\'
* vs. ':') and weird stuff like differing volumes with identical names, as
* on pre-Darwin Macintoshes.
*
* This file has long introduced itself to new hackers with this opening
* paragraph:
*
* This is the only correct cross-platform way to specify a file.
* Strings are not such a way. If you grew up on windows or unix, you
* may think they are. Welcome to reality.
*
* While taking the pose struck here to heart would be uncalled for, one
* may safely conclude that writing cross-platform code is an embittering
* experience.
*
* All methods with string parameters have two forms. The preferred
* form operates on UCS-2 encoded characters strings. An alternate
* form operates on characters strings encoded in the "native" charset.
*
* A string containing characters encoded in the native charset cannot
* be safely passed to javascript via xpconnect. Therefore, the "native
* methods" are not scriptable.
*/
[scriptable, main_process_scriptable_only, uuid(2fa6884a-ae65-412a-9d4c-ce6e34544ba1), builtinclass]
interface nsIFile : nsISupports
{
/**
* Create Types
*
* NORMAL_FILE_TYPE - A normal file.
* DIRECTORY_TYPE - A directory/folder.
*/
const unsigned long NORMAL_FILE_TYPE = 0;
const unsigned long DIRECTORY_TYPE = 1;
/**
* append[Native]
*
* This function is used for constructing a descendent of the
* current nsIFile.
*
* @param node
* A string which is intended to be a child node of the nsIFile.
* For the |appendNative| method, the node must be in the native
* filesystem charset.
*/
void append(in AString node);
[noscript] void appendNative(in ACString node);
/**
* Normalize the pathName (e.g. removing .. and . components on Unix).
*/
void normalize();
/**
* create
*
* This function will create a new file or directory in the
* file system. Any nodes that have not been created or
* resolved, will be. If the file or directory already
* exists create() will return NS_ERROR_FILE_ALREADY_EXISTS.
*
* @param type
* This specifies the type of file system object
* to be made. The only two types at this time
* are file and directory which are defined above.
* If the type is unrecongnized, we will return an
* error (NS_ERROR_FILE_UNKNOWN_TYPE).
*
* @param permissions
* The unix style octal permissions. This may
* be ignored on systems that do not need to do
* permissions.
*/
[must_use] void create(in unsigned long type, in unsigned long permissions);
/**
* Accessor to the leaf name of the file itself.
* For the |nativeLeafName| method, the nativeLeafName must
* be in the native filesystem charset.
*/
attribute AString leafName;
[noscript] attribute ACString nativeLeafName;
/**
* copyTo[Native]
*
* This will copy this file to the specified newParentDir.
* If a newName is specified, the file will be renamed.
* If 'this' is not created we will return an error
* (NS_ERROR_FILE_TARGET_DOES_NOT_EXIST).
*
* copyTo may fail if the file already exists in the destination
* directory.
*
* copyTo will NOT resolve aliases/shortcuts during the copy.
*
* @param newParentDir
* This param is the destination directory. If the
* newParentDir is null, copyTo() will use the parent
* directory of this file. If the newParentDir is not
* empty and is not a directory, an error will be
* returned (NS_ERROR_FILE_DESTINATION_NOT_DIR). For the
* |CopyToNative| method, the newName must be in the
* native filesystem charset.
*
* @param newName
* This param allows you to specify a new name for
* the file to be copied. This param may be empty, in
* which case the current leaf name will be used.
*/
void copyTo(in nsIFile newParentDir, in AString newName);
[noscript] void CopyToNative(in nsIFile newParentDir, in ACString newName);
/**
* copyToFollowingLinks[Native]
*
* This function is identical to copyTo with the exception that,
* as the name implies, it follows symbolic links. The XP_UNIX
* implementation always follow symbolic links when copying. For
* the |CopyToFollowingLinks| method, the newName must be in the
* native filesystem charset.
*/
void copyToFollowingLinks(in nsIFile newParentDir, in AString newName);
[noscript] void copyToFollowingLinksNative(in nsIFile newParentDir, in ACString newName);
/**
* moveTo[Native]
*
* A method to move this file or directory to newParentDir.
* If a newName is specified, the file or directory will be renamed.
* If 'this' is not created we will return an error
* (NS_ERROR_FILE_TARGET_DOES_NOT_EXIST).
* If 'this' is a file, and the destination file already exists, moveTo
* will replace the old file.
* This object is updated to refer to the new file.
*
* moveTo will NOT resolve aliases/shortcuts during the copy.
* moveTo will do the right thing and allow copies across volumes.
* moveTo will return an error (NS_ERROR_FILE_DIR_NOT_EMPTY) if 'this' is
* a directory and the destination directory is not empty.
* moveTo will return an error (NS_ERROR_FILE_ACCESS_DENIED) if 'this' is
* a directory and the destination directory is not writable.
*
* @param newParentDir
* This param is the destination directory. If the
* newParentDir is empty, moveTo() will rename the file
* within its current directory. If the newParentDir is
* not empty and does not name a directory, an error will
* be returned (NS_ERROR_FILE_DESTINATION_NOT_DIR). For
* the |moveToNative| method, the newName must be in the
* native filesystem charset.
*
* @param newName
* This param allows you to specify a new name for
* the file to be moved. This param may be empty, in
* which case the current leaf name will be used.
*/
void moveTo(in nsIFile newParentDir, in AString newName);
[noscript] void moveToNative(in nsIFile newParentDir, in ACString newName);
/**
* moveToFollowingLinks[Native]
*
* This function is identical to moveTo with the exception that,
* as the name implies, it follows symbolic links. The XP_UNIX
* implementation always follows symbolic links when moving. For
* the |MoveToFollowingLinks| method, the newName ust be in the native
* filesystem charset.
*/
void moveToFollowingLinks(in nsIFile newParentDir, in AString newName);
[noscript] void moveToFollowingLinksNative(in nsIFile newParentDir, in ACString newName);
/**
* renameTo
*
* This method is identical to moveTo except that if this file or directory
* is moved to a a different volume, it fails and returns an error
* (NS_ERROR_FILE_ACCESS_DENIED).
* This object will still point to the old location after renaming.
*/
void renameTo(in nsIFile newParentDir, in AString newName);
[noscript] void renameToNative(in nsIFile newParentDir, in ACString newName);
/**
* This will try to delete this file. The 'recursive' flag
* must be PR_TRUE to delete directories which are not empty.
*
* This will not resolve any symlinks.
*/
void remove(in boolean recursive);
/**
* Attributes of nsIFile.
*/
attribute unsigned long permissions;
attribute unsigned long permissionsOfLink;
/**
* File Times are to be in milliseconds from
* midnight (00:00:00), January 1, 1970 Greenwich Mean
* Time (GMT).
*/
attribute PRTime lastModifiedTime;
attribute PRTime lastModifiedTimeOfLink;
/**
* The creation time of file in milliseconds from midnight, January 1, 1970
* GMT, if available.
*
* This attribute is only implemented on Windows and macOS. Accessing this
* on another platform will this will throw NS_ERROR_NOT_IMPLEMENTED.
*/
readonly attribute PRTime creationTime;
readonly attribute PRTime creationTimeOfLink;
/**
* WARNING! On the Mac, getting/setting the file size with nsIFile
* only deals with the size of the data fork. If you need to
* know the size of the combined data and resource forks use the
* GetFileSizeWithResFork() method defined on nsILocalFileMac.
*/
attribute int64_t fileSize;
readonly attribute int64_t fileSizeOfLink;
/**
* target & path
*
* Accessor to the string path. The native version of these
* strings are not guaranteed to be a usable path to pass to
* NSPR or the C stdlib. There are problems that affect
* platforms on which a path does not fully specify a file
* because two volumes can have the same name (e.g., mac).
* This is solved by holding "private", native data in the
* nsIFile implementation. This native data is lost when
* you convert to a string.
*
* DO NOT PASS TO USE WITH NSPR OR STDLIB!
*
* target
* Find out what the symlink points at. Will give error
* (NS_ERROR_FILE_INVALID_PATH) if not a symlink.
*
* path
* Find out what the nsIFile points at.
*
* Note that the ACString attributes are returned in the
* native filesystem charset.
*
*/
readonly attribute AString target;
[noscript] readonly attribute ACString nativeTarget;
readonly attribute AString path;
[notxpcom,nostdcall,must_use] PathString nativePath();
%{C++
#ifndef XP_WIN
nsresult GetNativePath(nsACString& aPath);
#endif
/*
* Returns a human-readable path string.
*/
nsCString HumanReadablePath();
%}
boolean exists();
boolean isWritable();
boolean isReadable();
boolean isExecutable();
boolean isHidden();
boolean isDirectory();
boolean isFile();
boolean isSymlink();
/**
* Not a regular file, not a directory, not a symlink.
*/
boolean isSpecial();
/**
* createUnique
*
* This function will create a new file or directory in the
* file system. Any nodes that have not been created or
* resolved, will be. If this file already exists, we try
* variations on the leaf name "suggestedName" until we find
* one that did not already exist.
*
* If the search for nonexistent files takes too long
* (thousands of the variants already exist), we give up and
* return NS_ERROR_FILE_TOO_BIG.
*
* @param type
* This specifies the type of file system object
* to be made. The only two types at this time
* are file and directory which are defined above.
* If the type is unrecongnized, we will return an
* error (NS_ERROR_FILE_UNKNOWN_TYPE).
*
* @param permissions
* The unix style octal permissions. This may
* be ignored on systems that do not need to do
* permissions.
*/
[must_use]
void createUnique(in unsigned long type, in unsigned long permissions);
/**
* clone()
*
* This function will allocate and initialize a nsIFile object to the
* exact location of the |this| nsIFile.
*
* @param file
* A nsIFile which this object will be initialize
* with.
*
*/
nsIFile clone();
/**
* Will determine if the inFile equals this.
*/
boolean equals(in nsIFile inFile);
/**
* Will determine if inFile is a descendant of this file.
* This routine looks in subdirectories too.
*/
boolean contains(in nsIFile inFile);
/**
* Parent will be null when this is at the top of the volume.
*/
readonly attribute nsIFile parent;
/**
* Returns an enumeration of the elements in a directory. Each
* element in the enumeration is an nsIFile.
*
* @throws NS_ERROR_FILE_NOT_DIRECTORY if the current nsIFile does
* not specify a directory.
*/
[binaryname(DirectoryEntriesImpl)]
readonly attribute nsIDirectoryEnumerator directoryEntries;
%{C++
nsresult GetDirectoryEntries(nsIDirectoryEnumerator** aOut)
{
return GetDirectoryEntriesImpl(aOut);
};
%}
/**
* initWith[Native]Path
*
* This function will initialize the nsIFile object. Any
* internal state information will be reset.
*
* @param filePath
* A string which specifies a full file path to a
* location. Relative paths will be treated as an
* error (NS_ERROR_FILE_UNRECOGNIZED_PATH). For
* initWithNativePath, the filePath must be in the native
* filesystem charset.
*/
void initWithPath(in AString filePath);
[noscript] void initWithNativePath(in ACString filePath);
/**
* initWithFile
*
* Initialize this object with another file
*
* @param aFile
* the file this becomes equivalent to
*/
void initWithFile(in nsIFile aFile);
/**
* Flag for openNSPRFileDesc(), to hint to the OS that the file will be
* read sequentially with agressive readahead.
*/
const unsigned long OS_READAHEAD = 0x40000000;
/**
* Flag for openNSPRFileDesc(). Deprecated and unreliable!
* Instead use NS_OpenAnonymousTemporaryFile() to create a temporary
* file which will be deleted upon close!
*/
const unsigned long DELETE_ON_CLOSE = 0x80000000;
/**
* Return the result of PR_Open on the file. The caller is
* responsible for calling PR_Close on the result. On success, the
* returned PRFileDescr must be non-null.
*
* @param flags the PR_Open flags from prio.h, plus optionally
* OS_READAHEAD or DELETE_ON_CLOSE. OS_READAHEAD is a hint to the
* OS that the file will be read sequentially with agressive
* readahead. DELETE_ON_CLOSE is unreliable on Windows and is deprecated.
* Instead use NS_OpenAnonymousTemporaryFile() to create a temporary
* file which will be deleted upon close.
*/
[noscript, must_use] PRFileDescStar openNSPRFileDesc(in long flags,
in long mode);
/**
* Return the result of fopen on the file. The caller is
* responsible for calling fclose on the result. On success, the
* returned FILE pointer must be non-null.
*/
[noscript, must_use] FILE openANSIFileDesc(in string mode);
/**
* Return the result of PR_LoadLibrary on the file. The caller is
* responsible for calling PR_UnloadLibrary on the result.
*/
[noscript, must_use] PRLibraryStar load();
// number of bytes available on disk to non-superuser
[must_use] readonly attribute int64_t diskSpaceAvailable;
/**
* appendRelative[Native]Path
*
* Append a relative path to the current path of the nsIFile object.
*
* @param relativeFilePath
* relativeFilePath is a native relative path. For security reasons,
* this cannot contain .. or cannot start with a directory separator.
* For the |appendRelativeNativePath| method, the relativeFilePath
* must be in the native filesystem charset.
*/
void appendRelativePath(in AString relativeFilePath);
[noscript] void appendRelativeNativePath(in ACString relativeFilePath);
/**
* Accessor to a null terminated string which will specify
* the file in a persistent manner for disk storage.
*
* The character set of this attribute is undefined. DO NOT TRY TO
* INTERPRET IT AS HUMAN READABLE TEXT!
*/
[must_use] attribute ACString persistentDescriptor;
/**
* reveal
*
* Ask the operating system to open the folder which contains
* this file or folder. This routine only works on platforms which
* support the ability to open a folder and is run async on Windows.
* This routine must be called on the main.
*/
[must_use] void reveal();
/**
* launch
*
* Ask the operating system to attempt to open the file.
* this really just simulates "double clicking" the file on your platform.
* This routine only works on platforms which support this functionality
* and is run async on Windows. This routine must be called on the
* main thread.
*/
[must_use] void launch();
/**
* getRelativeDescriptor
*
* Returns a relative file path in an opaque, XP format. It is therefore
* not a native path.
*
* The character set of the string returned from this function is
* undefined. DO NOT TRY TO INTERPRET IT AS HUMAN READABLE TEXT!
*
* @param fromFile
* the file from which the descriptor is relative.
* Throws if fromFile is null.
*/
[must_use] ACString getRelativeDescriptor(in nsIFile fromFile);
/**
* setRelativeDescriptor
*
* Initializes the file to the location relative to fromFile using
* a string returned by getRelativeDescriptor.
*
* @param fromFile
* the file to which the descriptor is relative
* @param relative
* the relative descriptor obtained from getRelativeDescriptor
*/
[must_use]
void setRelativeDescriptor(in nsIFile fromFile, in ACString relativeDesc);
/**
* getRelativePath
*
* Returns a relative file from 'fromFile' to this file as a UTF-8 string.
* Going up the directory tree is represented via "../". '/' is used as
* the path segment separator. This is not a native path, since it's UTF-8
* encoded.
*
* @param fromFile
* the file from which the path is relative.
* Throws if fromFile is null.
*/
[must_use] AUTF8String getRelativePath(in nsIFile fromFile);
/**
* setRelativePath
*
* Initializes the file to the location relative to fromFile using
* a string returned by getRelativePath.
*
* @param fromFile
* the file from which the path is relative
* @param relative
* the relative path obtained from getRelativePath
*/
[must_use]
void setRelativePath(in nsIFile fromFile, in AUTF8String relativeDesc);
};
%{C++
#ifdef MOZILLA_INTERNAL_API
#include "nsDirectoryServiceUtils.h"
#include "nsString.h"
inline std::ostream& operator<<(std::ostream& aOut, const nsIFile& aFile) {
nsIFile* file = const_cast<nsIFile*>(&aFile);
nsAutoString path;
file->GetPath(path);
return aOut << "nsIFile { " << path << " }";
}
#endif
%}