26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
|
#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);
}
@end
|
|
>
>
|
|
<
|
>
|
|
<
|
|
>
>
>
|
>
|
|
<
>
>
>
>
>
|
<
|
<
<
<
<
<
<
<
<
<
<
|
<
<
<
<
<
<
<
<
<
<
|
>
>
|
>
>
|
|
|
|
<
<
|
<
<
|
<
<
<
<
<
<
|
<
<
|
|
|
|
<
<
<
<
<
<
<
|
<
<
<
<
<
<
<
<
<
|
|
|
|
|
|
>
>
>
|
>
>
>
>
>
>
|
>
>
>
|
<
<
|
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
|
#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
|