new header 'auxlib.h' + new function luaL_verror

auxlib.c

@@ -1,20 +1,20 @@
-char *rcs_auxlib="$Id: $";
+char *rcs_auxlib="$Id: auxlib.c,v 1.1 1997/03/17 17:02:29 roberto Exp roberto $";
 
 #include <stdio.h>
+#include <stdarg.h>
 
 #include "lua.h"
+#include "auxlib.h"
 
 
 void luaL_arg_check(int cond, char *funcname, int numarg, char *extramsg)
 {
   if (!cond) {
-    char buff[100];
     if (extramsg == NULL)
-      sprintf(buff, "bad argument #%d to function `%s'", numarg, funcname);
+      luaL_verror("bad argument #%d to function `%s'", numarg, funcname);
     else
-      sprintf(buff, "bad argument #%d to function `%s' (%s)",
+      luaL_verror("bad argument #%d to function `%s' (%s)",
                       numarg, funcname, extramsg);
-    lua_error(buff);
   }
 }
 
@@ -45,3 +45,20 @@ double luaL_opt_number (int numArg, double def, char *funcname)
                               luaL_check_number(numArg, funcname);
 }
 
+void luaL_openlib (struct luaL_reg *l, int n)
+{
+  int i;
+  for (i=0; i<n; i++)
+    lua_register(l[i].name, l[i].func);
+}
+
+
+void luaL_verror (char *fmt, ...)
+{
+  char buff[1000];
+  va_list argp;
+  va_start(argp, fmt);
+  vsprintf(buff, fmt, argp);
+  va_end(argp);
+  lua_error(buff);
+}

iolib.c

@@ -5,6 +5,7 @@
 #include <errno.h>
 
 #include "lua.h"
+#include "auxlib.h"
 #include "luadebug.h"
 #include "lualib.h"
 
@@ -234,13 +235,12 @@ static void io_debug (void)
 
 static void lua_printstack (FILE *f)
 {
-  int level = 0;
+  int level = 1;  /* skip level 0 (it's this function) */
   lua_Object func;
-  fprintf(f, "Active Stack:\n");
   while ((func = lua_stackedfunction(level++)) != LUA_NOOBJECT) {
     char *name;
     int currentline;
-    fprintf(f, "\t");
+    fprintf(f, (level==2) ? "Active Stack:\n\t" : "\t");
     switch (*lua_getobjname(func, &name)) {
       case 'g':
         fprintf(f, "function %s", name);
@@ -275,7 +275,7 @@ static void errorfb (void)
 }
 
 
-static struct lua_reg iolib[] = {
+static struct luaL_reg iolib[] = {
 {"readfrom", io_readfrom},
 {"writeto",  io_writeto},
 {"appendto", io_appendto},
@@ -295,6 +295,6 @@ static struct lua_reg iolib[] = {
 void iolib_open (void)
 {
   lua_infile=stdin; lua_outfile=stdout;
-  luaI_openlib(iolib, (sizeof(iolib)/sizeof(iolib[0])));
-  lua_setfallback("error", errorfb);
+  luaL_openlib(iolib, (sizeof(iolib)/sizeof(iolib[0])));
+  lua_setglobalmethod("error", errorfb);
 }

lex.c

@@ -1,9 +1,10 @@
-char *rcs_lex = "$Id: lex.c,v 2.41 1996/11/22 13:08:02 roberto Exp roberto $";
+char *rcs_lex = "$Id: lex.c,v 2.42 1997/02/07 13:49:46 roberto Exp roberto $";
 
 
 #include <ctype.h>
 #include <string.h>
 
+#include "auxlib.h"
 #include "mem.h"
 #include "tree.h"
 #include "table.h"
@@ -32,10 +33,8 @@ void lua_setinput (Input fn)
 
 static void luaI_auxsyntaxerror (char *s, char *token)
 {
-  char msg[256];
-  sprintf (msg,"%s;\n> last token read: \"%s\" at line %d in file %s",
+  luaL_verror("%s;\n> last token read: \"%s\" at line %d in file %s",
            s, token, lua_linenumber, lua_parsedfile);
-  lua_error (msg);
 }
 
 void luaI_syntaxerror (char *s)

lualib.h

@@ -2,7 +2,7 @@
 ** Libraries to be used in LUA programs
 ** Grupo de Tecnologia em Computacao Grafica
 ** TeCGraf - PUC-Rio
-** $Id: lualib.h,v 1.10 1996/08/05 20:55:24 roberto Exp roberto $
+** $Id: lualib.h,v 1.11 1997/03/17 17:01:10 roberto Exp roberto $
 */
 
 #ifndef lualib_h
@@ -15,14 +15,9 @@ void strlib_open  (void);
 void mathlib_open (void);
 
 
-/* auxiliar functions (private) */
 
-struct lua_reg {
-  char *name;
-  lua_CFunction func;
-};
+/* auxiliar functions (private) */
 
-void luaI_openlib (struct lua_reg *l, int n);
 char *luaI_addchar (int c);
 void luaI_addquoted (char *s);
 

mathlib.c

@@ -3,12 +3,13 @@
 ** Mathematics library to LUA
 */
 
-char *rcs_mathlib="$Id: mathlib.c,v 1.18 1996/08/01 14:55:33 roberto Exp roberto $";
+char *rcs_mathlib="$Id: mathlib.c,v 1.19 1997/03/17 17:01:10 roberto Exp roberto $";
 
 #include <stdlib.h>
 #include <math.h>
 
 #include "lualib.h"
+#include "auxlib.h"
 #include "lua.h"
 
 #ifndef PI
@@ -195,7 +196,7 @@ static void math_randomseed (void)
 }
 
 
-static struct lua_reg mathlib[] = {
+static struct luaL_reg mathlib[] = {
 {"abs",   math_abs},
 {"sin",   math_sin},
 {"cos",   math_cos},
@@ -224,7 +225,7 @@ static struct lua_reg mathlib[] = {
 */
 void mathlib_open (void)
 {
-  luaI_openlib(mathlib, (sizeof(mathlib)/sizeof(mathlib[0])));
+  luaL_openlib(mathlib, (sizeof(mathlib)/sizeof(mathlib[0])));
   old_pow = lua_refobject(lua_setfallback("arith", math_pow), 1);
 }
 

strlib.c

@@ -3,7 +3,7 @@
 ** String library to LUA
 */
 
-char *rcs_strlib="$Id: strlib.c,v 1.35 1997/02/21 15:21:34 roberto Exp roberto $";
+char *rcs_strlib="$Id: strlib.c,v 1.36 1997/03/17 17:01:10 roberto Exp roberto $";
 
 #include <string.h>
 #include <stdio.h>
@@ -11,6 +11,7 @@ char *rcs_strlib="$Id: strlib.c,v 1.35 1997/02/21 15:21:34 roberto Exp roberto $
 #include <ctype.h>
 
 #include "lua.h"
+#include "auxlib.h"
 #include "lualib.h"
 
 
@@ -518,15 +519,7 @@ static void str_format (void)
 }
 
 
-void luaI_openlib (struct lua_reg *l, int n)
-{
-  int i;
-  for (i=0; i<n; i++)
-    lua_register(l[i].name, l[i].func);
-}
-
-
-static struct lua_reg strlib[] = {
+static struct luaL_reg strlib[] = {
 {"strtok", str_tok},
 {"strlen", str_len},
 {"strsub", str_sub},
@@ -546,5 +539,5 @@ static struct lua_reg strlib[] = {
 */
 void strlib_open (void)
 {
-  luaI_openlib(strlib, (sizeof(strlib)/sizeof(strlib[0])));
+  luaL_openlib(strlib, (sizeof(strlib)/sizeof(strlib[0])));
 }