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#import "OFLocale.h"
#import "OFString.h"
#import "OFSystemInfo.h"
#import "OFInitializationFailedException.h"
#import "OFLoadPluginFailedException.h"
typedef OFPlugin *(*PluginInit)(void);
OFPluginHandle
OFDLOpen(OFString *path, OFDLOpenFlags flags)
{
#ifndef OF_WINDOWS
return dlopen([path cStringWithEncoding: [OFLocale encoding]], flags);
#else
if (path == nil)
return GetModuleHandle(NULL);
if ([OFSystemInfo isWindowsNT])
return LoadLibraryW(path.UTF16String);
else
return LoadLibraryA(
[path cStringWithEncoding: [OFLocale encoding]]);
void *
OFDLSym(OFPluginHandle handle, const char *symbol)
{
#ifndef OF_WINDOWS
return dlsym(handle, symbol);
#else
return (void *)(uintptr_t)GetProcAddress(handle, symbol);
#endif
}
void
OFDLClose(OFPluginHandle handle)
{
#ifndef OF_WINDOWS
dlclose(handle);
#else
FreeLibrary(handle);
#endif
}
OFString *
OFDLError(void)
{
#ifndef OF_WINDOWS
return [OFString stringWithCString: dlerror()
encoding: [OFLocale encoding]];
return nil;
#endif
}
@implementation OFPlugin
+ (id)pluginWithPath: (OFString *)path
{
void *pool = objc_autoreleasePoolPush();
OFPluginHandle handle;
PluginInit initPlugin;
OFPlugin *plugin;
#if defined(OF_MACOS)
path = [path stringByAppendingFormat: @".bundle/Contents/MacOS/%@",
path.lastPathComponent];
#elif defined(OF_IOS)
path = [path stringByAppendingFormat: @".bundle/%@",
path.lastPathComponent];
path = [path stringByAppendingString: @PLUGIN_SUFFIX];
#endif
if ((handle = OFDLOpen(path, OFDLOpenFlagLazy)) == NULL)
@throw [OFLoadPluginFailedException
exceptionWithPath: path
error: OFDLError()];
objc_autoreleasePoolPop(pool);
initPlugin = (PluginInit)(uintptr_t)OFDLSym(handle, "OFPluginInit");
if (initPlugin == (PluginInit)0 || (plugin = initPlugin()) == nil) {
OFDLClose(handle);
@throw [OFInitializationFailedException
exceptionWithClass: self];
}
plugin->_pluginHandle = handle;
return plugin;
}
- (instancetype)init
{
if ([self isMemberOfClass: [OFPlugin class]]) {
@try {
[self doesNotRecognizeSelector: _cmd];
} @catch (id e) {
[self release];
@throw e;
}
abort();
}
return [super init];
}
- (void)dealloc
{
OFPluginHandle h = _pluginHandle;
[super dealloc];
OFDLClose(h);
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#import "OFLocale.h"
#import "OFString.h"
#import "OFSystemInfo.h"
#import "OFInitializationFailedException.h"
#import "OFLoadPluginFailedException.h"
#ifndef RTLD_LAZY
# define RTLD_LAZY 0
#endif
@implementation OFPlugin
+ (instancetype)pluginWithPath: (OFString *)path
{
return [[[self alloc] initWithPath: path] autorelease];
}
+ (OFString *)pathForName: (OFString *)name
{
#if defined(OF_MACOS)
return [name stringByAppendingFormat: @".bundle/Contents/MacOS/%@",
name.lastPathComponent];
#elif defined(OF_IOS)
return [name stringByAppendingFormat: @".bundle/%@",
name.lastPathComponent];
#else
return [name stringByAppendingString: @PLUGIN_SUFFIX];
#endif
}
- (instancetype)initWithPath: (OFString *)path
{
self = [super init];
@try {
void *pool = objc_autoreleasePoolPush();
#ifndef OF_WINDOWS
_handle = dlopen(
[path cStringWithEncoding: [OFLocale encoding]], RTLD_LAZY);
#else
if ([OFSystemInfo isWindowsNT])
_handle = LoadLibraryW(path.UTF16String);
else
_handle = LoadLibraryA(
[path cStringWithEncoding: [OFLocale encoding]]);
#endif
if (_handle == NULL) {
#ifndef OF_WINDOWS
OFString *error = [OFString
stringWithCString: dlerror()
encoding: [OFLocale encoding]];
#else
OFString *error = nil;
#endif
@throw [OFLoadPluginFailedException
exceptionWithPath: path
error: error];
}
objc_autoreleasePoolPop(pool);
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
- (void *)addressForSymbol: (OFString *)symbol
{
#ifndef OF_WINDOWS
return dlsym(_handle,
[symbol cStringWithEncoding: [OFLocale encoding]]);
#else
return (void *)(uintptr_t)GetProcAddress(_handle,
[symbol cStringWithEncoding: [OFLocale encoding]]);
#endif
}
- (void)dealloc
{
#ifndef OF_WINDOWS
dlclose(_handle);
#else
FreeLibrary(_handle);
#endif
[super dealloc];
}
@end
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