initial

git-svn-id: svn://svn.icculus.org/netradiant/trunk@1 61c419a2-8eb2-4b30-bcec-8cead039b335

radiant/server.cpp

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+/*
+Copyright (C) 2001-2006, William Joseph.
+All Rights Reserved.
+
+This file is part of GtkRadiant.
+
+GtkRadiant 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.
+
+GtkRadiant 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 GtkRadiant; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#include "server.h"
+
+#include "debugging/debugging.h"
+#include "warnings.h"
+
+#include <vector>
+#include <map>
+#include "os/path.h"
+
+#include "modulesystem.h"
+
+class RadiantModuleServer : public ModuleServer
+{
+  typedef std::pair<CopiedString, int> ModuleType;
+  typedef std::pair<ModuleType, CopiedString> ModuleKey;
+  typedef std::map<ModuleKey, Module*> Modules_;
+  Modules_ m_modules;
+  bool m_error;
+
+public:
+  RadiantModuleServer() : m_error(false)
+  {
+  }
+
+  void setError(bool error)
+  {
+    m_error = error;
+  }
+  bool getError() const
+  {
+    return m_error;
+  }
+
+  TextOutputStream& getOutputStream()
+  {
+    return globalOutputStream();
+  }
+  TextOutputStream& getErrorStream()
+  {
+    return globalErrorStream();
+  }
+  DebugMessageHandler& getDebugMessageHandler()
+  {
+    return globalDebugMessageHandler();
+  }
+
+  void registerModule(const char* type, int version, const char* name, Module& module)
+  {
+    ASSERT_NOTNULL(&module);
+    if(!m_modules.insert(Modules_::value_type(ModuleKey(ModuleType(type, version), name), &module)).second)
+    {
+      globalErrorStream() << "module already registered: type=" << makeQuoted(type) << " name=" << makeQuoted(name) << "\n";
+    }
+    else
+    {
+      globalOutputStream() << "Module Registered: type=" << makeQuoted(type) << " version=" << makeQuoted(version) << " name=" << makeQuoted(name) << "\n";
+    }
+  }
+
+  Module* findModule(const char* type, int version, const char* name) const
+  {
+    Modules_::const_iterator i = m_modules.find(ModuleKey(ModuleType(type, version), name));
+    if(i != m_modules.end())
+    {
+      return (*i).second;
+    }
+    return 0;
+  }
+
+  void foreachModule(const char* type, int version, const Visitor& visitor)
+  {
+    for(Modules_::const_iterator i = m_modules.begin(); i != m_modules.end(); ++i)
+    {
+      if(string_equal((*i).first.first.first.c_str(), type))
+      {
+        visitor.visit((*i).first.second.c_str(), *(*i).second);
+      }
+    }
+  }
+};
+
+
+#if defined(WIN32)
+
+#include <windows.h>
+
+#define FORMAT_BUFSIZE 2048
+const char* FormatGetLastError()
+{
+  static char buf[FORMAT_BUFSIZE];
+  FormatMessage(
+    FORMAT_MESSAGE_FROM_SYSTEM | 
+    FORMAT_MESSAGE_IGNORE_INSERTS,
+    NULL,
+    GetLastError(),
+    MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
+    buf,
+    FORMAT_BUFSIZE,
+    NULL 
+  );
+  return buf;
+}
+
+class DynamicLibrary
+{
+  HMODULE m_library;
+public:
+  typedef int (__stdcall* FunctionPointer)();
+
+  DynamicLibrary(const char* filename)
+  {
+    m_library = LoadLibrary(filename);
+    if(m_library == 0)
+    {
+      globalErrorStream() << "LoadLibrary failed: '" << filename << "'\n";
+      globalErrorStream() << "GetLastError: " << FormatGetLastError();
+    }
+  }
+  ~DynamicLibrary()
+  {
+    if(!failed())
+    {
+      FreeLibrary(m_library);
+    }
+  }
+  bool failed()
+  {
+    return m_library == 0;
+  }
+  FunctionPointer findSymbol(const char* symbol)
+  {
+    FunctionPointer address = GetProcAddress(m_library, symbol);
+    if(address == 0)
+    {
+      globalErrorStream() << "GetProcAddress failed: '" << symbol << "'\n";
+      globalErrorStream() << "GetLastError: " << FormatGetLastError();
+    }
+    return address;
+  }
+};
+
+#elif defined(POSIX)
+
+#include <dlfcn.h>
+
+class DynamicLibrary
+{
+  void* m_library;
+public:
+  typedef int (* FunctionPointer)();
+
+  DynamicLibrary(const char* filename)
+  {
+    m_library = dlopen(filename, RTLD_NOW);
+  }
+  ~DynamicLibrary()
+  {
+    if(!failed())
+      dlclose(m_library);
+  }
+  bool failed()
+  {
+    return m_library == 0;
+  }
+  FunctionPointer findSymbol(const char* symbol)
+  {
+    FunctionPointer p = (FunctionPointer)dlsym(m_library, symbol);
+    if(p == 0)
+    {
+      const char* error = reinterpret_cast<const char*>(dlerror());
+      if(error != 0)
+      {
+        globalErrorStream() << error;
+      }
+    }
+    return p;
+  }
+};
+
+#else
+#error "unsupported platform"
+#endif
+
+class DynamicLibraryModule
+{
+  typedef void (RADIANT_DLLEXPORT* RegisterModulesFunc)(ModuleServer& server);
+  DynamicLibrary m_library;
+  RegisterModulesFunc m_registerModule;
+public:
+  DynamicLibraryModule(const char* filename)
+    : m_library(filename), m_registerModule(0)
+  {
+    if(!m_library.failed())
+    {
+      m_registerModule = reinterpret_cast<RegisterModulesFunc>(m_library.findSymbol("Radiant_RegisterModules"));
+    }
+  }
+  bool failed()
+  {
+    return m_registerModule == 0;
+  }
+  void registerModules(ModuleServer& server)
+  {
+    m_registerModule(server);
+  }
+};
+
+
+class Libraries
+{
+  typedef std::vector<DynamicLibraryModule*> libraries_t;
+  libraries_t m_libraries;
+
+public:
+  ~Libraries()
+  {
+    release();
+  }
+  void registerLibrary(const char* filename, ModuleServer& server)
+  {
+    DynamicLibraryModule* library = new DynamicLibraryModule(filename);
+
+    if(library->failed())
+    {
+      delete library;
+    }
+    else
+    {
+      m_libraries.push_back(library);
+      library->registerModules(server);
+    }
+  }
+  void release()
+  {
+    for(libraries_t::iterator i = m_libraries.begin(); i != m_libraries.end(); ++i)
+    {
+      delete *i;
+    }
+  }
+  void clear()
+  {
+    m_libraries.clear();
+  }
+};
+
+
+Libraries g_libraries;
+RadiantModuleServer g_server;
+
+ModuleServer& GlobalModuleServer_get()
+{
+  return g_server;
+}
+
+void GlobalModuleServer_loadModule(const char* filename)
+{
+  g_libraries.registerLibrary(filename, g_server);
+}
+
+void GlobalModuleServer_Initialise()
+{
+}
+
+void GlobalModuleServer_Shutdown()
+{
+}