gecko-dev/netwerk/protocol/file/nsIFileProtocolHandler.idl
2012-05-21 12:12:37 +01:00

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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 "nsIProtocolHandler.idl"
interface nsIFile;
[scriptable, uuid(1fb25bd5-4354-4dcd-8d97-621b7b3ed2e4)]
interface nsIFileProtocolHandler : nsIProtocolHandler
{
/**
* This method constructs a new file URI
*
* @param aFile nsIFile
* @return reference to a new nsIURI object
*/
nsIURI newFileURI(in nsIFile aFile);
/**
* Converts the nsIFile to the corresponding URL string. NOTE: under
* some platforms this is a lossy conversion (e.g., Mac Carbon build).
* If the nsIFile is a local file, then the result will be a file://
* URL string.
*
* The resulting string may contain URL-escaped characters.
* NOTE: Callers should use getURLSpecFromActualFile or
* getURLSpecFromDirFile if possible, for performance reasons.
*/
AUTF8String getURLSpecFromFile(in nsIFile file);
/**
* Converts the nsIFile to the corresponding URL string. Should
* only be called on files which are not directories. Otherwise
* identical to getURLSpecFromFile, but is usually more efficient.
* WARNING: This restriction may not be enforced at runtime!
*/
AUTF8String getURLSpecFromActualFile(in nsIFile file);
/**
* Converts the nsIFile to the corresponding URL string. Should
* only be called on files which are directories. Otherwise
* identical to getURLSpecFromFile, but is usually more efficient.
* WARNING: This restriction may not be enforced at runtime!
*/
AUTF8String getURLSpecFromDir(in nsIFile file);
/**
* Converts the URL string into the corresponding nsIFile if possible.
* A local file will be created if the URL string begins with file://.
*/
nsIFile getFileFromURLSpec(in AUTF8String url);
/**
* Takes a local file and tries to interpret it as an internet shortcut
* (e.g. .url files on windows).
* @param file The local file to read
* @return The URI the file refers to
*
* @throw NS_ERROR_NOT_AVAILABLE if the OS does not support such files.
* @throw NS_ERROR_NOT_AVAILABLE if this file is not an internet shortcut.
*/
nsIURI readURLFile(in nsIFile file);
};