From 76d8b8db06f7ae23da1543e1bf0a195d92b633a9 Mon Sep 17 00:00:00 2001
From: Roberto Ierusalimschy <roberto@inf.puc-rio.br>
Date: Fri, 9 Jul 2004 13:01:38 -0300
Subject: [PATCH] `lua_pushfstring' now supports `%p' option too

---
 lbaselib.c | 27 +++++++++------------------
 liolib.c   | 12 +++++-------
 lobject.c  | 22 ++++++++++++++++------
 3 files changed, 30 insertions(+), 31 deletions(-)

diff --git a/lbaselib.c b/lbaselib.c
index 0450a00d..036a4c9d 100644
--- a/lbaselib.c
+++ b/lbaselib.c
@@ -1,5 +1,5 @@
 /*
-** $Id: lbaselib.c,v 1.151 2004/07/01 14:26:28 roberto Exp roberto $
+** $Id: lbaselib.c,v 1.152 2004/07/02 18:09:11 roberto Exp roberto $
 ** Basic library
 ** See Copyright Notice in lua.h
 */
@@ -383,45 +383,36 @@ static int luaB_xpcall (lua_State *L) {
 
 
 static int luaB_tostring (lua_State *L) {
-  char buff[4*sizeof(void *) + 2];  /* enough space for a `%p' */
-  const char *tn = "";
-  const void *p = NULL;
   luaL_checkany(L, 1);
   if (luaL_callmeta(L, 1, "__tostring"))  /* is there a metafield? */
     return 1;  /* use its value */
   switch (lua_type(L, 1)) {
     case LUA_TNUMBER:
       lua_pushstring(L, lua_tostring(L, 1));
-      return 1;
+      break;
     case LUA_TSTRING:
       lua_pushvalue(L, 1);
-      return 1;
+      break;
     case LUA_TBOOLEAN:
       lua_pushstring(L, (lua_toboolean(L, 1) ? "true" : "false"));
-      return 1;
+      break;
     case LUA_TNIL:
       lua_pushliteral(L, "nil");
-      return 1;
+      break;
     case LUA_TTABLE:
-      p = lua_topointer(L, 1);
-      tn = "table";
+      lua_pushfstring(L, "table: %p", lua_topointer(L, 1));
       break;
     case LUA_TFUNCTION:
-      p = lua_topointer(L, 1);
-      tn = "function";
+      lua_pushfstring(L, "function: %p", lua_topointer(L, 1));
       break;
     case LUA_TUSERDATA:
     case LUA_TLIGHTUSERDATA:
-      p = lua_touserdata(L, 1);
-      tn = "userdata";
+      lua_pushfstring(L, "userdata: %p", lua_topointer(L, 1));
       break;
     case LUA_TTHREAD:
-      p = lua_tothread(L, 1);
-      tn = "thread";
+      lua_pushfstring(L, "thread: %p", lua_topointer(L, 1));
       break;
   }
-  sprintf(buff, "%p", p);
-  lua_pushfstring(L, "%s: %s", tn, buff);
   return 1;
 }
 
diff --git a/liolib.c b/liolib.c
index 04961b5e..76323112 100644
--- a/liolib.c
+++ b/liolib.c
@@ -1,5 +1,5 @@
 /*
-** $Id: liolib.c,v 2.53 2004/05/28 18:35:05 roberto Exp roberto $
+** $Id: liolib.c,v 2.54 2004/07/09 15:47:48 roberto Exp roberto $
 ** Standard I/O (and system) library
 ** See Copyright Notice in lua.h
 */
@@ -114,13 +114,11 @@ static int io_gc (lua_State *L) {
 
 
 static int io_tostring (lua_State *L) {
-  char buff[4*sizeof(void *) + 8];  /* enough space for a `%p' */
-  FILE **f = topfile(L);
-  if (*f == NULL)
-    strcpy(buff, "closed");
+  FILE *f = *topfile(L);
+  if (f == NULL)
+    lua_pushstring(L, "file (closed)");
   else
-    sprintf(buff, "%p", lua_touserdata(L, 1));
-  lua_pushfstring(L, "file (%s)", buff);
+    lua_pushfstring(L, "file (%p)", f);
   return 1;
 }
 
diff --git a/lobject.c b/lobject.c
index 04ad92c4..b9aff12d 100644
--- a/lobject.c
+++ b/lobject.c
@@ -1,5 +1,5 @@
 /*
-** $Id: lobject.c,v 2.2 2004/04/30 20:13:38 roberto Exp roberto $
+** $Id: lobject.c,v 2.3 2004/05/03 12:30:41 roberto Exp roberto $
 ** Some generic functions over Lua objects
 ** See Copyright Notice in lua.h
 */
@@ -94,7 +94,7 @@ static void pushstr (lua_State *L, const char *str) {
 }
 
 
-/* this function handles only `%d', `%c', %f, and `%s' formats */
+/* this function handles only `%d', `%c', %f, %p, and `%s' formats */
 const char *luaO_pushvfstring (lua_State *L, const char *fmt, va_list argp) {
   int n = 1;
   pushstr(L, "");
@@ -104,9 +104,10 @@ const char *luaO_pushvfstring (lua_State *L, const char *fmt, va_list argp) {
     setsvalue2s(L, L->top, luaS_newlstr(L, fmt, e-fmt));
     incr_top(L);
     switch (*(e+1)) {
-      case 's':
+      case 's': {
         pushstr(L, va_arg(argp, char *));
         break;
+      }
       case 'c': {
         char buff[2];
         buff[0] = cast(char, va_arg(argp, int));
@@ -114,17 +115,26 @@ const char *luaO_pushvfstring (lua_State *L, const char *fmt, va_list argp) {
         pushstr(L, buff);
         break;
       }
-      case 'd':
+      case 'd': {
         setnvalue(L->top, cast(lua_Number, va_arg(argp, int)));
         incr_top(L);
         break;
-      case 'f':
+      }
+      case 'f': {
         setnvalue(L->top, cast(lua_Number, va_arg(argp, l_uacNumber)));
         incr_top(L);
         break;
-      case '%':
+      }
+      case 'p': {
+        char buff[4*sizeof(void *) + 8]; /* should be enough space for a `%p' */
+        sprintf(buff, "%p", va_arg(argp, void *));
+        pushstr(L, buff);
+        break;
+      }
+      case '%': {
         pushstr(L, "%");
         break;
+      }
       default: {
         char buff[3];
         buff[0] = '%';