From 4206d7ed6033764c81d97ccdc343f4defda516e6 Mon Sep 17 00:00:00 2001
From: Roberto Ierusalimschy <roberto@inf.puc-rio.br>
Date: Fri, 9 Jul 2004 15:24:41 -0300
Subject: [PATCH] `lua_Chunkwriter' returns 0 in case of success

---
 ldump.c   | 29 +++++++++++++++++------------
 lstrlib.c |  6 +++---
 2 files changed, 20 insertions(+), 15 deletions(-)

diff --git a/ldump.c b/ldump.c
index d41082bd..2f5609c1 100644
--- a/ldump.c
+++ b/ldump.c
@@ -1,6 +1,6 @@
 /*
-** $Id: ldump.c,v 2.1 2003/12/10 12:13:36 roberto Exp roberto $
-** save bytecodes
+** $Id: ldump.c,v 1.7 2004/06/09 21:03:53 lhf Exp lhf $
+** save pre-compiled Lua chunks
 ** See Copyright Notice in lua.h
 */
 
@@ -21,16 +21,20 @@
 
 typedef struct {
  lua_State* L;
- lua_Chunkwriter write;
+ lua_Chunkwriter writer;
  void* data;
  int strip;
+ int status;
 } DumpState;
 
 static void DumpBlock(const void* b, size_t size, DumpState* D)
 {
- lua_unlock(D->L);
- (*D->write)(D->L,b,size,D->data);
- lua_lock(D->L);
+ if (D->status==0)
+ {
+  lua_unlock(D->L);
+  D->status=(*D->writer)(D->L,b,size,D->data);
+  lua_lock(D->L);
+ }
 }
 
 static void DumpByte(int y, DumpState* D)
@@ -54,7 +58,7 @@ static void DumpNumber(lua_Number x, DumpState* D)
  DumpBlock(&x,sizeof(x),D);
 }
 
-static void DumpString(TString* s, DumpState* D)
+static void DumpString(const TString* s, DumpState* D)
 {
  if (s==NULL || getstr(s)==NULL)
   DumpSize(0,D);
@@ -154,16 +158,17 @@ static void DumpHeader(DumpState* D)
 }
 
 /*
-** dump function as precompiled chunk
+** dump Lua function as precompiled chunk
 */
-int luaU_dump (lua_State* L, const Proto* Main, lua_Chunkwriter w, void* data, int strip)
+int luaU_dump (lua_State* L, const Proto* f, lua_Chunkwriter w, void* data, int strip)
 {
  DumpState D;
  D.L=L;
- D.write=w;
+ D.writer=w;
  D.data=data;
  D.strip=strip;
+ D.status=0;
  DumpHeader(&D);
- DumpFunction(Main,NULL,&D);
- return 1;
+ DumpFunction(f,NULL,&D);
+ return D.status;
 }
diff --git a/lstrlib.c b/lstrlib.c
index 502ea814..2e88f6e7 100644
--- a/lstrlib.c
+++ b/lstrlib.c
@@ -1,5 +1,5 @@
 /*
-** $Id: lstrlib.c,v 1.102 2004/04/30 20:13:38 roberto Exp roberto $
+** $Id: lstrlib.c,v 1.103 2004/06/08 14:31:15 roberto Exp roberto $
 ** Standard library for string operations and pattern-matching
 ** See Copyright Notice in lua.h
 */
@@ -133,7 +133,7 @@ static int str_char (lua_State *L) {
 static int writer (lua_State *L, const void* b, size_t size, void* B) {
   (void)L;
   luaL_addlstring((luaL_Buffer*) B, (const char *)b, size);
-  return 1;
+  return 0;
 }
 
 
@@ -142,7 +142,7 @@ static int str_dump (lua_State *L) {
   luaL_checktype(L, 1, LUA_TFUNCTION);
   lua_settop(L, 1);
   luaL_buffinit(L,&b);
-  if (!lua_dump(L, writer, &b))
+  if (lua_dump(L, writer, &b) != 0)
     luaL_error(L, "unable to dump given function");
   luaL_pushresult(&b);
   return 1;