From c549d4fe64c48ab645740e6d12c69c91250fad3d Mon Sep 17 00:00:00 2001
From: Roberto Ierusalimschy <roberto@inf.puc-rio.br>
Date: Thu, 1 May 2014 15:18:06 -0300
Subject: 'lua_strtonum' (and 'luaO_str2num') now return string size, instead
 of receiving it

---
 lbaselib.c | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

(limited to 'lbaselib.c')

diff --git a/lbaselib.c b/lbaselib.c
index e0e6a66c..5b22a1fc 100644
--- a/lbaselib.c
+++ b/lbaselib.c
@@ -1,5 +1,5 @@
 /*
-** $Id: lbaselib.c,v 1.284 2014/02/14 16:45:38 roberto Exp roberto $
+** $Id: lbaselib.c,v 1.285 2014/03/12 20:57:40 roberto Exp roberto $
 ** Basic library
 ** See Copyright Notice in lua.h
 */
@@ -45,31 +45,31 @@ static int luaB_print (lua_State *L) {
 
 #define SPACECHARS	" \f\n\r\t\v"
 
-static int b_str2int (const char *s, const char *e, int base, lua_Integer *pn) {
+static const char *b_str2int (const char *s, int base, lua_Integer *pn) {
   lua_Unsigned n = 0;
   int neg = 0;
   s += strspn(s, SPACECHARS);  /* skip initial spaces */
   if (*s == '-') { s++; neg = 1; }  /* handle signal */
   else if (*s == '+') s++;
   if (!isalnum((unsigned char)*s))  /* no digit? */
-    return 0;
+    return NULL;
   do {
     int digit = (isdigit((unsigned char)*s)) ? *s - '0'
                    : toupper((unsigned char)*s) - 'A' + 10;
-    if (digit >= base) return 0;  /* invalid numeral */
+    if (digit >= base) return NULL;  /* invalid numeral */
     n = n * base + digit;
     s++;
   } while (isalnum((unsigned char)*s));
   s += strspn(s, SPACECHARS);  /* skip trailing spaces */
-  if (s != e)  /* invalid trailing characters? */
-    return 0;
+  if (*s != '\0')  /* invalid trailing characters? */
+    return NULL;
   *pn = (lua_Integer)((neg) ? (0u - n) : n);
-  return 1;
+  return s;
 }
 
 
 static int luaB_tonumber (lua_State *L) {
-  if (lua_isnoneornil(L, 2)) {  /* standard conversion */
+  if (lua_isnoneornil(L, 2)) {  /* standard conversion? */
     luaL_checkany(L, 1);
     if (lua_type(L, 1) == LUA_TNUMBER) {  /* already a number? */
       lua_settop(L, 1);  /* yes; return it */
@@ -78,20 +78,20 @@ static int luaB_tonumber (lua_State *L) {
     else {
       size_t l;
       const char *s = lua_tolstring(L, 1, &l);
-      if (s != NULL && lua_strtonum(L, s, l))  /* can convert to a number? */
-        return 1;
+      if (s != NULL && lua_strtonum(L, s) == l + 1)
+        return 1;  /* successful conversion to number */
       /* else not a number */
     }
   }
   else {
     size_t l;
     const char *s;
-    lua_Integer n;
+    lua_Integer n = 0;  /* to avoid warnings */
     int base = luaL_checkint(L, 2);
     luaL_checktype(L, 1, LUA_TSTRING);  /* before 'luaL_checklstring'! */
     s = luaL_checklstring(L, 1, &l);
     luaL_argcheck(L, 2 <= base && base <= 36, 2, "base out of range");
-    if (b_str2int(s, s + l, base, &n)) {
+    if (b_str2int(s, base, &n) == s + l) {
       lua_pushinteger(L, n);
       return 1;
     }  /* else not a number */
-- 
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