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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/native_library.h"
#include <dlfcn.h>
#include "base/file_path.h"
#include "base/file_util.h"
#include "base/mac/scoped_cftyperef.h"
#include "base/string_util.h"
#include "base/threading/thread_restrictions.h"
#include "base/utf_string_conversions.h"
namespace base {
// static
NativeLibrary LoadNativeLibrary(const FilePath& library_path,
std::string* error) {
// dlopen() etc. open the file off disk.
if (library_path.Extension() == "dylib" ||
!file_util::DirectoryExists(library_path)) {
void* dylib = dlopen(library_path.value().c_str(), RTLD_LAZY);
if (!dylib)
return NULL;
NativeLibrary native_lib = new NativeLibraryStruct();
native_lib->type = DYNAMIC_LIB;
native_lib->dylib = dylib;
return native_lib;
}
base::mac::ScopedCFTypeRef<CFURLRef> url(
CFURLCreateFromFileSystemRepresentation(
kCFAllocatorDefault,
(const UInt8*)library_path.value().c_str(),
library_path.value().length(),
true));
if (!url)
return NULL;
CFBundleRef bundle = CFBundleCreate(kCFAllocatorDefault, url.get());
if (!bundle)
return NULL;
NativeLibrary native_lib = new NativeLibraryStruct();
native_lib->type = BUNDLE;
native_lib->bundle = bundle;
native_lib->bundle_resource_ref = CFBundleOpenBundleResourceMap(bundle);
return native_lib;
}
// static
void UnloadNativeLibrary(NativeLibrary library) {
if (library->type == BUNDLE) {
CFBundleCloseBundleResourceMap(library->bundle,
library->bundle_resource_ref);
CFRelease(library->bundle);
} else {
dlclose(library->dylib);
}
delete library;
}
// static
void* GetFunctionPointerFromNativeLibrary(NativeLibrary library,
const char* name) {
if (library->type == BUNDLE) {
base::mac::ScopedCFTypeRef<CFStringRef> symbol_name(
CFStringCreateWithCString(kCFAllocatorDefault, name,
kCFStringEncodingUTF8));
return CFBundleGetFunctionPointerForName(library->bundle, symbol_name);
}
return dlsym(library->dylib, name);
}
// static
string16 GetNativeLibraryName(const string16& name) {
return name + ASCIIToUTF16(".dylib");
}
} // namespace base
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