nsXPCOMGlue.h
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- /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
- /* ***** BEGIN LICENSE BLOCK *****
- * Version: MPL 1.1/GPL 2.0/LGPL 2.1
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- * http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- *
- * The Original Code is mozilla.org code.
- *
- * The Initial Developer of the Original Code is
- * Netscape Communications Corporation.
- * Portions created by the Initial Developer are Copyright (C) 1998
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- * Benjamin Smedberg <benjamin@smedbergs.us>
- *
- * Alternatively, the contents of this file may be used under the terms of
- * either of the GNU General Public License Version 2 or later (the "GPL"),
- * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
- * in which case the provisions of the GPL or the LGPL are applicable instead
- * of those above. If you wish to allow use of your version of this file only
- * under the terms of either the GPL or the LGPL, and not to allow others to
- * use your version of this file under the terms of the MPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the MPL, the GPL or the LGPL.
- *
- * ***** END LICENSE BLOCK ***** */
- #ifndef nsXPCOMGlue_h__
- #define nsXPCOMGlue_h__
- #include "nscore.h"
- class nsILocalFile;
- /**
- * The following function is available in both the standalone and
- * dynamically linked versions of the glue.
- */
- struct GREVersionRange {
- const char *lower;
- PRBool lowerInclusive;
- const char *upper;
- PRBool upperInclusive;
- };
- struct GREProperty {
- const char *property;
- const char *value;
- };
- /**
- * Locate the path of the xpcom shared library from a GRE with specified
- * properties.
- *
- * @param versions An array of version ranges: if any version range
- * matches, the GRE is considered acceptable.
- * @param versionsLength The length of the versions array.
- * @param properties A null-terminated list of GRE property/value pairs
- * which must all be satisfied.
- * @param propertiesLength Length of the properties array.
- * @param buffer A buffer to be filled with the appropriate path. If
- * the "local" GRE is specified (via the USE_LOCAL_GRE
- * environment variable, for example), this buffer
- * will be set to the empty string.
- * @param buflen The length of buffer. This must be at least
- * PATH_MAX/MAXPATHLEN.
- * @throws NS_ERROR_FAILURE if an appropriate GRE could not be found.
- * @note The properties parameter is ignored on macintosh, because of the
- * manner in which the XUL frameworks are installed by version.
- * @note Currently this uses a "first-fit" algorithm, it does not select
- * the newest available GRE.
- */
- extern "C" NS_COM_GLUE nsresult
- GRE_GetGREPathWithProperties(const GREVersionRange *versions,
- PRUint32 versionsLength,
- const GREProperty *properties,
- PRUint32 propertiesLength,
- char *buffer, PRUint32 buflen);
- #ifdef XPCOM_GLUE
- /**
- * The following functions are only available in the standalone glue.
- */
- /**
- * Initialize the XPCOM glue by dynamically linking against the XPCOM
- * shared library indicated by xpcomFile.
- */
- extern "C" NS_HIDDEN_(nsresult)
- XPCOMGlueStartup(const char* xpcomFile);
- typedef void (*NSFuncPtr)();
- struct nsDynamicFunctionLoad
- {
- const char *functionName;
- NSFuncPtr *function;
- };
- /**
- * Dynamically load functions from libxul.
- *
- * @throws NS_ERROR_NOT_INITIALIZED if XPCOMGlueStartup() was not called or
- * if the libxul DLL was not found.
- * @throws NS_ERROR_LOSS_OF_SIGNIFICANT_DATA if only some of the required
- * functions were found.
- */
- extern "C" NS_HIDDEN_(nsresult)
- XPCOMGlueLoadXULFunctions(const nsDynamicFunctionLoad *symbols);
- /**
- * Finish the XPCOM glue after it is no longer needed.
- */
- extern "C" NS_HIDDEN_(nsresult)
- XPCOMGlueShutdown();
- /**
- * Locate the path of the XPCOM shared library of a compatible GRE.
- * The result of this function is normally passed directly to
- * XPCOMGlueStartup. This looks for the GRE version in
- * nsBuildID.h, which is generated at build time. Unless you set
- * MOZ_MILESTONE_RELEASE this will probably not be a useful GRE version string.
- *
- * @return string buffer pointing to the XPCOM DLL path. Callers do
- * not need to free this buffer.
- * @status DEPRECATED - Use GRE_GetGREPathWithProperties
- */
- extern "C" NS_HIDDEN_(char const *)
- GRE_GetXPCOMPath();
- /**
- * Locate the directory of a compatible GRE as an nsIFile
- *
- * @param _retval Ordinary XPCOM getter, returns an addrefed interface.
- */
- extern "C" NS_HIDDEN_(nsresult)
- GRE_GetGREDirectory(nsILocalFile* *_retval);
- /**
- * 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" NS_HIDDEN_(nsresult)
- GRE_Startup();
- /**
- * Shut down XPCOM and the XPCOM glue in one step.
- */
- extern "C" NS_HIDDEN_(nsresult)
- GRE_Shutdown();
- #endif // XPCOM_GLUE
- #endif // nsXPCOMGlue_h__