/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 * The Original Code is mozilla.org code.
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#include "nscore.h"

class nsILocalFile;

/**
 * Initialize the XPCOM glue by dynamically linking against the XPCOM
 * shared library indicated by xpcomFile.
 */

extern "C"
nsresult XPCOMGlueStartup(const char* xpcomFile);


/**
 * Finish the XPCOM glue after it is no longer needed.
 */

extern "C"
nsresult XPCOMGlueShutdown();


/**
 * Locate the path of a compatible GRE.
 * 
 * @return string buffer pointing to the GRE path (without a trailing
 *         directory separator). Callers do no need to free this buffer.
 */

extern "C"
char const * GRE_GetGREPath();


/**
 * Locate the path of a compatible GRE. This is returned as an
 * nsILocalFile instead of a char*.
 *
 * @param _retval   Ordinary XPCOM getter, returns an addrefed interface.
 */

extern "C"
nsresult GRE_GetGREDirectory(nsILocalFile* *_retval);


/**
 * Locate the path of the XPCOM binary of a compatible GRE.
 * The result of this function is normally passed directly to
 * XPCOMGlueStartup.
 *
 * @return string buffer pointing to the XPCOM DLL path. Callers do
 *         not need to free this buffer.
 */

extern "C"
char const * GRE_GetXPCOMPath();


/**
 * Embedding applications which don't need a custom
 * directoryserviceprovider may use GRE_Startup to start the XPCOM
 * glue and initialize the GRE in one step.
 */

extern "C"
nsresult GRE_Startup();


/**
 * Shut down XPCOM and the XPCOM glue in one step.
 */

extern "C"
nsresult GRE_Shutdown();
