added new path format functions

exposed helpers as ISourceMod

--HG--
extra : convert_revision : svn%3A39bc706e-5318-0410-9160-8a85361fbb7c/trunk%40322

core/systems/ExtensionSys.cpp

@@ -20,7 +20,7 @@ CExtension::CExtension(const char *filename, char *error, size_t err_max)
 	m_FullyLoaded = false;
 
 	char path[PLATFORM_MAX_PATH+1];
-	g_LibSys.PathFormat(path, PLATFORM_MAX_PATH, "%s/extensions/%s", g_SourceMod.GetSMBaseDir(), filename);
+	g_SourceMod.BuildPath(Path_SM, path, PLATFORM_MAX_PATH, "extensions/%s", filename);
 
 	m_pLib = g_LibSys.OpenLibrary(path, error, err_max);
 

core/systems/LibrarySys.cpp

@@ -282,7 +282,7 @@ ILibrary *LibrarySystem::OpenLibrary(const char *path, char *error, size_t err_m
 	return new CLibrary(lib);
 }
 
-void LibrarySystem::PathFormat(char *buffer, size_t len, const char *fmt, ...)
+size_t LibrarySystem::PathFormat(char *buffer, size_t len, const char *fmt, ...)
 {
 	va_list ap;
 	va_start(ap,fmt);
@@ -298,4 +298,6 @@ void LibrarySystem::PathFormat(char *buffer, size_t len, const char *fmt, ...)
 			buffer[i] = PLATFORM_SEP_CHAR;
 		}
 	}
+
+	return mylen;
 }

core/systems/LibrarySys.h

@@ -59,7 +59,7 @@ public:
 	virtual bool IsPathFile(const char *path);
 	virtual bool IsPathDirectory(const char *path);
 	virtual void GetPlatformError(char *error, size_t err_max);
-	virtual void PathFormat(char *buffer, size_t len, const char *fmt, ...);
+	virtual size_t PathFormat(char *buffer, size_t len, const char *fmt, ...);
 };
 
 extern LibrarySystem g_LibSys;

core/systems/PluginSys.cpp

@@ -100,7 +100,7 @@ void CPlugin::InitIdentity()
 CPlugin *CPlugin::CreatePlugin(const char *file, char *error, size_t maxlength)
 {
 	char fullpath[PLATFORM_MAX_PATH+1];
-	g_LibSys.PathFormat(fullpath, sizeof(fullpath), "%s/plugins/%s", g_SourceMod.GetSMBaseDir(), file);
+	g_SourceMod.BuildPath(Path_SM, fullpath, sizeof(fullpath), "plugins/%s", file);
 	FILE *fp = fopen(fullpath, "rb");
 
 	CPlugin *pPlugin = new CPlugin(file);