1

utils/xbox/vxconsole/sys_scriptlib.cpp

@@ -0,0 +1,292 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+//	SYS_SCRIPTLIB.CPP
+//
+//
+//=====================================================================================//
+#include "vxconsole.h"
+
+char	g_sys_token[MAXTOKEN];
+char*	g_sys_scriptbuff;
+char*	g_sys_scriptptr;
+char*	g_sys_scriptendptr;
+int		g_sys_scriptsize;
+int		g_sys_scriptline;
+bool	g_sys_endofscript;
+bool	g_sys_tokenready;
+int		g_sys_oldscriptline;
+char*	g_sys_oldscriptptr;
+
+//-----------------------------------------------------------------------------
+//	Sys_FreeScriptFile
+//
+//-----------------------------------------------------------------------------
+void Sys_FreeScriptFile(void)
+{
+	if (g_sys_scriptbuff)
+	{
+		Sys_Free(g_sys_scriptbuff);
+		g_sys_scriptbuff = NULL;
+	}
+}
+
+//-----------------------------------------------------------------------------
+//	Sys_LoadScriptFile
+//
+//-----------------------------------------------------------------------------
+void Sys_LoadScriptFile(const char* filename)
+{
+	g_sys_scriptsize = Sys_LoadFile(filename,(void **)&g_sys_scriptbuff);
+
+	Sys_ResetParser();
+}
+
+//-----------------------------------------------------------------------------
+//	Sys_SetScriptData
+//
+//-----------------------------------------------------------------------------
+void Sys_SetScriptData(const char* data, int length)
+{
+	g_sys_scriptbuff = (char *)data;
+	g_sys_scriptsize = length;
+
+	Sys_ResetParser();
+}
+
+//-----------------------------------------------------------------------------
+//	Sys_UnGetToken
+//
+//-----------------------------------------------------------------------------
+void Sys_UnGetToken(void)
+{
+	g_sys_tokenready = true;
+}
+
+//-----------------------------------------------------------------------------
+//	Sys_GetToken
+//
+//-----------------------------------------------------------------------------
+char* Sys_GetToken(bool crossline)
+{
+	char*	tokenptr;
+
+	if (g_sys_tokenready)
+	{
+		g_sys_tokenready = false;
+		return (g_sys_token);
+	}
+
+	g_sys_token[0] = '\0';
+
+	if (g_sys_scriptptr >= g_sys_scriptendptr)
+	{
+		g_sys_endofscript = true;
+		return (NULL);
+	}
+
+skipspace:
+	while (*g_sys_scriptptr <= ' ')
+	{
+		if (g_sys_scriptptr >= g_sys_scriptendptr)
+		{
+			g_sys_endofscript = true;
+			return (NULL);
+		}
+
+		if (*g_sys_scriptptr++ == '\n')
+		{
+			if (!crossline)
+			{
+				// unexpected newline at g_sys_scriptline
+				return (NULL);
+			}
+
+			g_sys_scriptline++;
+		}
+	}
+
+	if (g_sys_scriptptr >= g_sys_scriptendptr)
+	{
+		g_sys_endofscript = true;
+		return (NULL);
+	}
+
+	// skip commented line
+	if ((g_sys_scriptptr[0] == ';') || (g_sys_scriptptr[0] == '/' && g_sys_scriptptr[1] == '/'))
+	{
+		if (!crossline)
+		{
+			// unexpected newline at g_sys_scriptline
+			return (NULL);
+		}
+
+		while (*g_sys_scriptptr++ != '\n')
+		{
+			if (g_sys_scriptptr >= g_sys_scriptendptr)
+			{
+				g_sys_endofscript = true;
+				return (NULL);
+			}
+		}
+
+		g_sys_scriptline++;
+		goto skipspace;
+	}
+
+	tokenptr = g_sys_token;
+	if (g_sys_scriptptr[0] == '\"' && g_sys_scriptptr[1])
+	{
+		// copy quoted token
+		do
+		{
+			*tokenptr++ = *g_sys_scriptptr++;
+			if (g_sys_scriptptr == g_sys_scriptendptr)
+				break;
+
+			if (tokenptr == &g_sys_token[MAXTOKEN])
+			{
+				// token too large
+				return NULL;
+			}
+		}
+		while (*g_sys_scriptptr >= ' ' && *g_sys_scriptptr != '\"');
+
+		if (g_sys_scriptptr[0] == '\"')
+			*tokenptr++ = *g_sys_scriptptr++;
+	}
+	else
+	{
+		// copy token
+		while (*g_sys_scriptptr > ' ' && *g_sys_scriptptr != ';' && *g_sys_scriptptr != '\"')
+		{
+			*tokenptr++ = *g_sys_scriptptr++;
+			if (g_sys_scriptptr == g_sys_scriptendptr)
+				break;
+
+			if (tokenptr == &g_sys_token[MAXTOKEN])
+			{
+				// token too large
+				return NULL;
+			}
+		}
+	}
+
+	*tokenptr = '\0';
+
+	return (g_sys_token);
+}
+
+//-----------------------------------------------------------------------------
+//	Sys_SkipRestOfLine
+//
+//-----------------------------------------------------------------------------
+void Sys_SkipRestOfLine(void)
+{
+	while (*g_sys_scriptptr++ != '\n')
+	{
+		if (g_sys_scriptptr >= g_sys_scriptendptr)
+		{
+			break;
+		}
+	}
+
+	g_sys_scriptline++;
+
+	// flush any queued token
+	g_sys_tokenready = false;
+}
+
+//-----------------------------------------------------------------------------
+//	Sys_TokenAvailable
+//
+//	Returns (TRUE) if token available on line.
+//-----------------------------------------------------------------------------
+bool Sys_TokenAvailable (void)
+{
+	char*	ptr;
+	
+	ptr = g_sys_scriptptr;
+	while (*ptr <= ' ')
+	{
+		if (ptr >= g_sys_scriptendptr)
+		{
+			g_sys_endofscript = true;
+			return (false);
+		}
+
+		if (*ptr++ == '\n')
+			return (false);
+	}
+
+	return (true);
+}
+
+
+//-----------------------------------------------------------------------------
+//	Sys_EndOfScript
+//
+//	Returns (TRUE) at end of script
+//-----------------------------------------------------------------------------
+bool Sys_EndOfScript(void)
+{
+	if (g_sys_scriptptr >= g_sys_scriptendptr)
+	{
+		g_sys_endofscript = true;
+		return (true);
+	}
+
+	return (false);
+}
+
+//-----------------------------------------------------------------------------
+//	Sys_ResetParser
+//
+//-----------------------------------------------------------------------------
+void Sys_ResetParser(void)
+{
+	g_sys_scriptptr    = g_sys_scriptbuff;
+	g_sys_scriptendptr = g_sys_scriptptr + g_sys_scriptsize;
+	g_sys_scriptline   = 1;
+	g_sys_endofscript  = false;
+	g_sys_tokenready   = false;
+}
+
+//-----------------------------------------------------------------------------
+//	Sys_SaveParser
+//
+//-----------------------------------------------------------------------------
+void Sys_SaveParser(void)
+{
+	g_sys_oldscriptline = g_sys_scriptline;
+	g_sys_oldscriptptr  = g_sys_scriptptr;		
+}
+
+//-----------------------------------------------------------------------------
+//	Sys_RestoreParser
+//
+//-----------------------------------------------------------------------------
+void Sys_RestoreParser(void)
+{
+	g_sys_scriptline = g_sys_oldscriptline;
+	g_sys_scriptptr  = g_sys_oldscriptptr;		
+	g_sys_tokenready = false;
+}
+
+//-----------------------------------------------------------------------------
+//	Sys_StripQuotesFromToken
+//
+//-----------------------------------------------------------------------------
+void Sys_StripQuotesFromToken( char *pToken )
+{
+	int len;
+
+	len = strlen( pToken );
+	if ( len >= 2 && pToken[0] == '\"' )
+	{
+		memcpy( pToken, pToken+1, len-1 );
+		pToken[len-2] = '\0';
+	}
+}
+
+
+