diff options
| -rw-r--r-- | backends/plugins/ds/ds-provider.cpp | 108 | ||||
| -rw-r--r-- | backends/plugins/ds/ds-provider.h | 43 |
2 files changed, 151 insertions, 0 deletions
diff --git a/backends/plugins/ds/ds-provider.cpp b/backends/plugins/ds/ds-provider.cpp new file mode 100644 index 0000000000..c200e212cc --- /dev/null +++ b/backends/plugins/ds/ds-provider.cpp @@ -0,0 +1,108 @@ +/* ScummVM - Graphic Adventure Engine + * + * ScummVM is the legal property of its developers, whose names + * are too numerous to list here. Please refer to the COPYRIGHT + * file distributed with this source distribution. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * $URL$ + * $Id$ + * + */ + +#if defined(DYNAMIC_MODULES) && defined(__DS__) + +#include "backends/plugins/ds/ds-provider.h" +#include "backends/plugins/dynamic-plugin.h" +#include "common/fs.h" + +#include "backends/platform/ds/dsloader.h" + + +class DSPlugin : public DynamicPlugin { +protected: + void *_dlHandle; + Common::String _filename; + + virtual VoidFunc findSymbol(const char *symbol) { + void *func = dlsym(_dlHandle, symbol); + if (!func) + warning("Failed loading symbol '%s' from plugin '%s' (%s)", symbol, _filename.c_str(), dlerror()); + + // FIXME HACK: This is a HACK to circumvent a clash between the ISO C++ + // standard and POSIX: ISO C++ disallows casting between function pointers + // and data pointers, but dlsym always returns a void pointer. For details, + // see e.g. <http://www.trilithium.com/johan/2004/12/problem-with-dlsym/>. + assert(sizeof(VoidFunc) == sizeof(func)); + VoidFunc tmp; + memcpy(&tmp, &func, sizeof(VoidFunc)); + return tmp; + } + +public: + DSPlugin(const Common::String &filename) + : _dlHandle(0), _filename(filename) {} + + ~DSPlugin() { + if (_dlHandle) unloadPlugin(); + } + + bool loadPlugin() { + assert(!_dlHandle); + _dlHandle = dlopen(_filename.c_str(), RTLD_LAZY); + + if (!_dlHandle) { + warning("Failed loading plugin '%s' (%s)", _filename.c_str(), dlerror()); + return false; + } + + bool ret = DynamicPlugin::loadPlugin(); + + if (ret) + dlforgetsyms(_dlHandle); + + return ret; + } + + void unloadPlugin() { + DynamicPlugin::unloadPlugin(); + if (_dlHandle) { + if (dlclose(_dlHandle) != 0) + warning("Failed unloading plugin '%s' (%s)", _filename.c_str(), dlerror()); + _dlHandle = 0; + } + } +}; + + +Plugin* DSPluginProvider::createPlugin(const Common::FSNode &node) const { + return new DSPlugin(node.getPath()); +} + +bool DSPluginProvider::isPluginFilename(const Common::FSNode &node) const { + // Check the plugin suffix + Common::String filename = node.getName(); + printf("Testing name %s", filename.c_str()); + if (!filename.hasSuffix(".PLG") && !filename.hasSuffix(".plg") && !filename.hasSuffix(".PLUGIN") && !filename.hasSuffix(".plugin")) { + printf(" fail.\n"); + return false; + } + + printf(" success!\n"); + return true; +} + +#endif // defined(DYNAMIC_MODULES) && defined(__DS__) diff --git a/backends/plugins/ds/ds-provider.h b/backends/plugins/ds/ds-provider.h new file mode 100644 index 0000000000..096c1b87a9 --- /dev/null +++ b/backends/plugins/ds/ds-provider.h @@ -0,0 +1,43 @@ +/* ScummVM - Graphic Adventure Engine + * + * ScummVM is the legal property of its developers, whose names + * are too numerous to list here. Please refer to the COPYRIGHT + * file distributed with this source distribution. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * $URL$ + * $Id$ + * + */ + +#ifndef BACKENDS_PLUGINS_DS_DS_PROVIDER_H +#define BACKENDS_PLUGINS_DS_DS_PROVIDER_H + +#include "base/plugins.h" + +#if defined(DYNAMIC_MODULES) && defined(__DS__) + +class DSPluginProvider : public FilePluginProvider { +protected: + Plugin* createPlugin(const Common::FSNode &node) const; + + bool isPluginFilename(const Common::FSNode &node) const; + +}; + +#endif // defined(DYNAMIC_MODULES) && defined(__DS__) + +#endif /* BACKENDS_PLUGINS_DS_DS_PROVIDER_H */ |