From a6eace5116d1a711218a7c9086a4e3c4db88ee57 Mon Sep 17 00:00:00 2001
From: Natanael Copa <ncopa@alpinelinux.org>
Date: Wed, 19 Jun 2013 14:52:00 +0200
Subject: [PATCH] support for Lua 5.2

---
 Makefile  |  2 +-
 laugeas.c | 21 +++++++++++++++++----
 2 files changed, 18 insertions(+), 5 deletions(-)

diff --git a/Makefile b/Makefile
index e79a48c..22dca18 100644
--- a/Makefile
+++ b/Makefile
@@ -10,7 +10,7 @@ else
 FULL_VERSION    := $(VERSION)
 endif
 
-LUAPC := $(shell for pc in lua lua5.1; do \
+LUAPC := $(shell for pc in lua lua5.2 lua5.1; do \
 			$(PKGCONFIG) --exists $$pc && echo $$pc && break; \
 		done)
 
diff --git a/laugeas.c b/laugeas.c
index 05b99c3..11a8736 100644
--- a/laugeas.c
+++ b/laugeas.c
@@ -4,6 +4,7 @@
 -- In general, the functions map straight to the C library. See the
 -- descriptions below for details.
  */
+#include <assert.h>
 #include <stdlib.h>
 
 #include <lua.h>
@@ -21,6 +22,18 @@
 
 #define LUA_FILEHANDLE	"FILE*"
 
+#if LUA_VERSION_NUM < 502
+#  define luaL_newlib(L,l) (lua_newtable(L), luaL_register(L,NULL,l))
+#  define luaL_setfuncs(L,l,n) (assert(n==0), luaL_register(L,NULL,l))
+#else
+static int luaL_typerror (lua_State *L, int narg, const char *tname)
+{
+	const char *msg = lua_pushfstring(L, "%s expected, got %s",
+					  tname, luaL_typename(L, narg));
+	return luaL_argerror(L, narg, msg);
+}
+#endif
+
 struct aug_flagmap {
 	const char *name;
 	int value;
@@ -286,7 +299,7 @@ static int Paug_error_details(lua_State *L)
 	return 1;
 }
 
-static const luaL_reg Paug_methods[] = {
+static const luaL_Reg Paug_methods[] = {
 /*
 --- Initializes the library.
 --
@@ -363,7 +376,7 @@ function print(augobj, path, file_handle)
 	{NULL,		NULL}
 };
 
-static const luaL_reg Luag_meta_methods[] = {
+static const luaL_Reg Laug_meta_methods[] = {
 	{"__gc",	Paug_close},
 	{NULL,		NULL}
 };
@@ -372,7 +385,7 @@ static const luaL_reg Luag_meta_methods[] = {
 LUALIB_API int luaopen_augeas(lua_State *L)
 {
 	struct aug_flagmap *f = Taug_flagmap;
-	luaL_register(L, LIBNAME, Paug_methods);
+	luaL_newlib(L, Paug_methods);
 	lua_pushliteral(L, "version");
 	lua_pushliteral(L, VERSION);
 	lua_settable(L, -3);
@@ -385,7 +398,7 @@ LUALIB_API int luaopen_augeas(lua_State *L)
 	}
 
 	luaL_newmetatable(L, PAUG_META);
-	luaL_register(L, NULL, Luag_meta_methods);
+	luaL_setfuncs(L, Laug_meta_methods, 0);
 	lua_pushliteral(L, "__index");
 	lua_pushvalue(L, -3);
 	lua_rawset(L, -3);
-- 
1.8.3.1