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2023-08-07 19:29:24 +08:00
commit 34d6c5d489
4832 changed files with 1389451 additions and 0 deletions
--- a/CryCommon/CryLibrary.h
+++ b/CryCommon/CryLibrary.h
@@ -0,0 +1,98 @@
+#ifndef CRYLIBRARY_H__
+#define CRYLIBRARY_H__
+
+/*!
+	CryLibrary
+	
+	Convenience-Macros which abstract the use of DLLs/shared libraries in a platform independent way.
+	A short explanation of the different macros follows:
+	
+	CrySharedLibraySupported:
+		This macro can be used to test if the current active platform support shared library calls. The default
+		value is false. This gets redefined if a certain platform (WIN32 or LINUX) is desired.
+
+	CrySharedLibrayExtension:
+		The default extension which will get appended to library names in calls to CryLoadLibraryDefExt
+		(see below).
+
+	CryLoadLibrary(libName):
+		Loads a shared library.
+
+	CryLoadLibraryDefExt(libName):
+		Loads a shared library. The platform-specific default extension is appended to the libName. This allows
+		writing of somewhat platform-independent library loading code and is therefore the function which should
+		be used most of the time, unless some special extensions are used (e.g. for plugins).
+	
+	CryGetProcAddress(libHandle, procName):
+		Import function from the library presented by libHandle.
+		
+	CryFreeLibrary(libHandle):
+		Unload the library presented by libHandle.
+	
+	HISTORY:
+		03.03.2004 MarcoK
+			- initial version
+			- added to CryPlatform
+*/
+
+#include <stdio.h>
+
+#if defined(WIN32)
+	#include <windows.h>
+
+	#define CrySharedLibraySupported true
+	#define CrySharedLibrayExtension ".dll"
+	#define CryLoadLibrary(libName) ::LoadLibrary(libName)
+	#define CryGetProcAddress(libHandle, procName) ::GetProcAddress((HMODULE)libHandle, procName)
+	#define CryFreeLibrary(libHandle) ::FreeLibrary(libHandle)
+#elif defined(LINUX)
+	#include <dlfcn.h>
+	#include <stdlib.h>
+	#include "platform.h"
+
+	// for compatibility with code written for windows
+	#define CrySharedLibraySupported true
+	#define CrySharedLibrayExtension ".so"
+	#define CryGetProcAddress(libHandle, procName) ::dlsym(libHandle, procName)
+	#define CryFreeLibrary(libHandle) ::dlclose(libHandle)
+
+	#define HMODULE void*
+	static const char* gEnvName("MODULE_PATH");
+
+	static const char* GetModulePath()
+	{
+		return getenv(gEnvName);
+	}
+
+	static void SetModulePath(const char* pModulePath)
+	{
+		setenv(gEnvName, pModulePath?pModulePath:"",true);
+	}
+
+	static HMODULE CryLoadLibrary(const char* libName, const bool cAppend = true, const bool cLoadLazy = false)
+	{
+		string newLibName(GetModulePath());
+#if !defined(NDEBUG)
+		string t(libName);
+		string c("_debug.so");
+		if(cAppend)
+			t.replace(t.size()-3, c.size(), c.c_str());
+		newLibName += t;
+		printf("loading library  %s...\n",newLibName.c_str());
+#else
+		newLibName += libName;
+#endif
+		return ::dlopen(newLibName.c_str(), cLoadLazy?(RTLD_LAZY | RTLD_GLOBAL):(RTLD_NOW | RTLD_GLOBAL));
+	}
+
+
+#else
+#define CrySharedLibraySupported false
+#define CrySharedLibrayExtension ""
+#define CryLoadLibrary(libName) NULL
+#define CryLoadLibraryDefExt(libName) CryLoadLibrary(libName CrySharedLibrayExtension)
+#define CryGetProcAddress(libHandle, procName) NULL
+#define CryFreeLibrary(libHandle)
+#endif 
+
+#endif //CRYLIBRARY_H__