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/* 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"
interface nsIFile;
interface nsIURI;
/**
* Represents the command line used to invoke a XUL application. This may be the
* original command-line of this instance, or a command line remoted from another
* instance of the application.
*
* DEFINITIONS:
* "arguments" are any values found on the command line.
* "flags" are switches. In normalized form they are preceded by a single dash.
* Some flags may take "parameters", e.g. "--url <param>".
*/
[scriptable, uuid(bc3173bd-aa46-46a0-9d25-d9867a9659b6)]
interface nsICommandLine : nsISupports
{
/**
* Number of arguments in the command line. The application name is not
* part of the command line.
*/
readonly attribute long length;
/**
* Get an argument from the array of command-line arguments.
*
* On windows, flags of the form /flag are normalized to -flag. /flag:param
* are normalized to -flag param.
*
* On *nix and mac flags of the form --flag are normalized to -flag. --flag=param
* are normalized to the form -flag param.
*
* @param aIndex The argument to retrieve. This index is 0-based, and does
* not include the application name.
* @return The indexth argument.
* @throws NS_ERROR_ILLEGAL_VALUE if aIndex is out of bounds.
*/
AString getArgument(in long aIndex);
/**
* Find a command-line flag.
*
* @param aFlag The flag name to locate. Do not include the initial
* hyphen.
* @param aCaseSensitive Whether to do case-sensitive comparisons.
* @return The position of the flag in the command line.
*/
long findFlag(in AString aFlag, in boolean aCaseSensitive);
/**
* Remove arguments from the command line. This normally occurs after
* a handler has processed the arguments.
*
* @param aStart Index to begin removing.
* @param aEnd Index to end removing, inclusive.
*/
void removeArguments(in long aStart, in long aEnd);
/**
* A helper method which will find a flag and remove it in one step.
*
* @param aFlag The flag name to find and remove.
* @param aCaseSensitive Whether to do case-sensitive comparisons.
* @return Whether the flag was found.
*/
boolean handleFlag(in AString aFlag, in boolean aCaseSensitive);
/**
* Find a flag with a parameter and remove both. This is a helper
* method that combines "findFlag" and "removeArguments" in one step.
*
* @return null (a void astring) if the flag is not found. The parameter value
* if found. Note that null and the empty string are not the same.
* @throws NS_ERROR_INVALID_ARG if the flag exists without a parameter
*
* @param aFlag The flag name to find and remove.
* @param aCaseSensitive Whether to do case-sensitive flag search.
*/
AString handleFlagWithParam(in AString aFlag, in boolean aCaseSensitive);
/**
* The type of command line being processed.
*
* STATE_INITIAL_LAUNCH is the first launch of the application instance.
* STATE_REMOTE_AUTO is a remote command line automatically redirected to
* this instance.
* STATE_REMOTE_EXPLICIT is a remote command line explicitly redirected to
* this instance using xremote/windde/appleevents.
*/
readonly attribute unsigned long state;
const unsigned long STATE_INITIAL_LAUNCH = 0;
const unsigned long STATE_REMOTE_AUTO = 1;
const unsigned long STATE_REMOTE_EXPLICIT = 2;
/**
* There may be a command-line handler which performs a default action if
* there was no explicit action on the command line (open a default browser
* window, for example). This flag allows the default action to be prevented.
*/
attribute boolean preventDefault;
/**
* The working directory for this command line. Use this property instead
* of the working directory for the current process, since a redirected
* command line may have had a different working directory.
*
* @throws NS_ERROR_NOT_INITIALIZED if the working directory was not specified.
*/
readonly attribute nsIFile workingDirectory;
/**
* Resolve a file-path argument into an nsIFile. This method gracefully
* handles relative or absolute file paths, according to the working
* directory of this command line.
* If the path is relative and there is no working directory available,
* this may return null.
*
* @param aArgument The path to resolve.
*
*/
nsIFile resolveFile(in AString aArgument);
/**
* Resolves a URI argument into a URI. This method has platform-specific
* logic for converting an absolute URI or a relative file-path into the
* appropriate URI object; it gracefully handles win32 C:\ paths which would
* confuse the ioservice if passed directly.
*
* @param aArgument The command-line argument to resolve.
*/
nsIURI resolveURI(in AString aArgument);
};