ObjFW  Artifact [72b6e8f4e8]

Artifact 72b6e8f4e853bf73e14c8639cecc28a2c58757785589ef8d389fe5fed7184f40:

• File src/OFPlugin.m — part of check-in [13ee56edf3] at 2014-06-21 21:43:43 on branch trunk — Move all macros from OFObject.h to macros.h

  This means that OFObject.h imports macros.h now, making it unnecessary
  to manually import macros.h in almost every file. And while at it, also
  import autorelease.h in OFObject.h, so that this doesn't need to be
  manually imported in almost every file as well. (user: js, size: 2059) [annotate] [blame] [check-ins using]

/*
 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014
 *   Jonathan Schleifer <js@webkeks.org>
 *
 * All rights reserved.
 *
 * This file is part of ObjFW. It may be distributed under the terms of the
 * Q Public License 1.0, which can be found in the file LICENSE.QPL included in
 * the packaging of this file.
 *
 * Alternatively, it may be distributed under the terms of the GNU General
 * Public License, either version 2 or 3, which can be found in the file
 * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
 * file.
 */

#include "config.h"

#include <stdlib.h>
#include <string.h>

#ifdef HAVE_DLFCN_H
# include <dlfcn.h>
#endif

#import "OFPlugin.h"
#import "OFString.h"

#import "OFInitializationFailedException.h"

#ifdef _WIN32
# define dlsym(handle, symbol) GetProcAddress(handle, symbol)
# define dlclose(handle) FreeLibrary(handle)
#endif

typedef OFPlugin* (*init_plugin_t)(void);

@implementation OFPlugin
+ (id)pluginFromFile: (OFString*)path
{
	void *pool = objc_autoreleasePoolPush();
	of_plugin_handle_t handle;
	init_plugin_t initPlugin;
	OFPlugin *plugin;

	path = [path stringByAppendingString: @PLUGIN_SUFFIX];

#ifndef _WIN32
	if ((handle = dlopen([path cStringWithEncoding:
	    [OFString nativeOSEncoding]], RTLD_LAZY)) == NULL)
#else
	if ((handle = LoadLibraryW([path UTF16String])) == NULL)
#endif
		@throw [OFInitializationFailedException
		    exceptionWithClass: self];

	objc_autoreleasePoolPop(pool);

	initPlugin = (init_plugin_t)(uintptr_t)dlsym(handle, "init_plugin");
	if (initPlugin == (init_plugin_t)0 || (plugin = initPlugin()) == nil) {
		dlclose(handle);
		@throw [OFInitializationFailedException
		    exceptionWithClass: self];
	}

	plugin->_handle = handle;
	return plugin;
}

- init
{
	if (object_getClass(self) == [OFPlugin class]) {
		@try {
			[self doesNotRecognizeSelector: _cmd];
			abort();
		} @catch (id e) {
			[self release];
			@throw e;
		}
	}

	return [super init];
}

- (void)dealloc
{
	of_plugin_handle_t h = _handle;

	[super dealloc];

	dlclose(h);
}
@end