ObjFW  Diff

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

#import "OFInitializationFailedException.h"

typedef OFPlugin* (*init_plugin_t)(void);

of_plugin_handle_t
of_dlopen(OFString *path, int flags)
{
#ifdef OF_WINDOWS
# define dlsym(handle, symbol) GetProcAddress(handle, symbol)
# define dlclose(handle) FreeLibrary(handle)
#ifndef OF_WINDOWS
	return dlopen([path cStringWithEncoding:
	    [OFSystemInfo native8BitEncoding]], flags);
#else
	return LoadLibraryW([path UTF16String]);
#endif
}

void*
of_dlsym(of_plugin_handle_t handle, const char *symbol)
{
#ifndef OF_WINDOWS
	return dlsym(handle, symbol);
#else
	return GetProcAddress(handle, symbol);
#endif
}

void
of_dlclose(of_plugin_handle_t handle)
{
#ifndef OF_WINDOWS
	dlclose(handle);
#else
	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 OF_WINDOWS
	if ((handle = dlopen([path cStringWithEncoding:
	    [OFSystemInfo native8BitEncoding]], RTLD_LAZY)) == NULL)
	if ((handle = of_dlopen(path, 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");
	initPlugin = (init_plugin_t)(uintptr_t)of_dlsym(handle, "init_plugin");
	if (initPlugin == (init_plugin_t)0 || (plugin = initPlugin()) == nil) {
		dlclose(handle);
		of_dlclose(handle);
		@throw [OFInitializationFailedException
		    exceptionWithClass: self];
	}

	plugin->_handle = handle;
	return plugin;
}

- (void)dealloc
{
	of_plugin_handle_t h = _handle;

	[super dealloc];

	dlclose(h);
	of_dlclose(h);
}
@end