/*
* Copyright (c) 2008 - 2009
* Jonathan Schleifer <js@webkeks.org>
*
* All rights reserved.
*
* This file is part of libobjfw. It may be distributed under the terms of the
* Q Public License 1.0, which can be found in the file LICENSE included in
* the packaging of this file.
*/
#import "config.h"
#include <stdlib.h>
#include <string.h>
#include <dlfcn.h>
#import "OFPlugin.h"
#import "OFExceptions.h"
@implementation OFPlugin
+ pluginFromFile: (const char*)path
{
return [[[OFPlugin alloc] initFromFile: path] autorelease];
}
- initFromFile: (const char*)path
{
char *file;
size_t pathlen, suffixlen;
id (*init_plugin)();
Class c;
if ((self = [super init])) {
pathlen = strlen(path);
suffixlen = strlen(PLUGIN_SUFFIX);
if ((file = malloc(pathlen + suffixlen + 1)) == NULL) {
c = [self class];
[super free];
@throw [OFNoMemException newWithClass: c
andSize: pathlen +
suffixlen + 1];
}
memcpy(file, path, pathlen);
memcpy(file + pathlen, PLUGIN_SUFFIX, suffixlen);
file[pathlen + suffixlen] = 0;
if ((handle = dlopen(file, RTLD_NOW)) == NULL ||
(init_plugin = dlsym(handle, "init_plugin")) == NULL ||
(plugin = init_plugin()) == nil) {
free(file);
c = [self class];
[super free];
@throw [OFInitializationFailedException
newWithClass: c];
}
free(file);
}
return self;
}
- free
{
[plugin free];
dlclose(handle);
return [super free];
}
#ifdef __objc_INCLUDE_GNU
- (retval_t)forward: (SEL)selector
: (arglist_t)args
#else
- (id)forward: (SEL)selector
: (marg_list)args
#endif
{
return [plugin performv: selector
: args];
}
- (IMP)methodFor: (SEL)selector
{
if ([self respondsTo: selector])
return [self methodFor: selector];
else
return [plugin methodFor: selector];
}
@end