1 files changed, 31 insertions, 19 deletions

diff --git a/src/auxiliar.c b/src/auxiliar.c
index b1f9203..9a37e10 100644
--- a/src/auxiliar.c
+++ b/src/auxiliar.c
@@ -7,7 +7,6 @@
 #include <string.h>
 #include <stdio.h>
 
-#include "luasocket.h"
 #include "auxiliar.h"
 
 /*=========================================================================*\
@@ -16,16 +15,15 @@
 /*-------------------------------------------------------------------------*\
 * Initializes the module
 \*-------------------------------------------------------------------------*/
-int aux_open(lua_State *L)
-{
+int aux_open(lua_State *L) {
     return 0;
 }
 
 /*-------------------------------------------------------------------------*\
 * Creates a new class with given methods
+* Methods whose names start with __ are passed directly to the metatable.
 \*-------------------------------------------------------------------------*/
-void aux_newclass(lua_State *L, const char *classname, luaL_reg *func)
-{
+void aux_newclass(lua_State *L, const char *classname, luaL_reg *func) {
     luaL_newmetatable(L, classname); /* mt */
     /* create __index table to place methods */
     lua_pushstring(L, "__index");    /* mt,"__index" */
@@ -46,10 +44,30 @@ void aux_newclass(lua_State *L, const char *classname, luaL_reg *func)
 }
 
 /*-------------------------------------------------------------------------*\
+* Prints the value of a class in a nice way
+\*-------------------------------------------------------------------------*/
+int aux_tostring(lua_State *L) {
+    char buf[32];
+    if (!lua_getmetatable(L, 1)) goto error;
+    lua_pushstring(L, "__index");
+    lua_gettable(L, -2);
+    if (!lua_istable(L, -1)) goto error;
+    lua_pushstring(L, "class");
+    lua_gettable(L, -2);
+    if (!lua_isstring(L, -1)) goto error;
+    sprintf(buf, "%p", lua_touserdata(L, 1));
+    lua_pushfstring(L, "%s: %s", lua_tostring(L, -1), buf);
+    return 1;
+error:
+    lua_pushstring(L, "invalid object passed to 'auxiliar.c:__tostring'");
+    lua_error(L);
+    return 1;
+}
+
+/*-------------------------------------------------------------------------*\
 * Insert class into group
 \*-------------------------------------------------------------------------*/
-void aux_add2group(lua_State *L, const char *classname, const char *groupname)
-{
+void aux_add2group(lua_State *L, const char *classname, const char *groupname) {
     luaL_getmetatable(L, classname);
     lua_pushstring(L, groupname);
     lua_pushboolean(L, 1);
@@ -60,8 +78,7 @@ void aux_add2group(lua_State *L, const char *classname, const char *groupname)
 /*-------------------------------------------------------------------------*\
 * Make sure argument is a boolean
 \*-------------------------------------------------------------------------*/
-int aux_checkboolean(lua_State *L, int objidx)
-{
+int aux_checkboolean(lua_State *L, int objidx) {
     if (!lua_isboolean(L, objidx))
         luaL_typerror(L, objidx, lua_typename(L, LUA_TBOOLEAN));
     return lua_toboolean(L, objidx);
@@ -71,8 +88,7 @@ int aux_checkboolean(lua_State *L, int objidx)
 * Return userdata pointer if object belongs to a given class, abort with 
 * error otherwise
 \*-------------------------------------------------------------------------*/
-void *aux_checkclass(lua_State *L, const char *classname, int objidx)
-{
+void *aux_checkclass(lua_State *L, const char *classname, int objidx) {
     void *data = aux_getclassudata(L, classname, objidx);
     if (!data) {
         char msg[45];
@@ -86,8 +102,7 @@ void *aux_checkclass(lua_State *L, const char *classname, int objidx)
 * Return userdata pointer if object belongs to a given group, abort with 
 * error otherwise
 \*-------------------------------------------------------------------------*/
-void *aux_checkgroup(lua_State *L, const char *groupname, int objidx)
-{
+void *aux_checkgroup(lua_State *L, const char *groupname, int objidx) {
     void *data = aux_getgroupudata(L, groupname, objidx);
     if (!data) {
         char msg[45];
@@ -100,8 +115,7 @@ void *aux_checkgroup(lua_State *L, const char *groupname, int objidx)
 /*-------------------------------------------------------------------------*\
 * Set object class
 \*-------------------------------------------------------------------------*/
-void aux_setclass(lua_State *L, const char *classname, int objidx)
-{
+void aux_setclass(lua_State *L, const char *classname, int objidx) {
     luaL_getmetatable(L, classname);
     if (objidx < 0) objidx--;
     lua_setmetatable(L, objidx);
@@ -111,8 +125,7 @@ void aux_setclass(lua_State *L, const char *classname, int objidx)
 * Get a userdata pointer if object belongs to a given group. Return NULL 
 * otherwise
 \*-------------------------------------------------------------------------*/
-void *aux_getgroupudata(lua_State *L, const char *groupname, int objidx)
-{
+void *aux_getgroupudata(lua_State *L, const char *groupname, int objidx) {
     if (!lua_getmetatable(L, objidx))
         return NULL;
     lua_pushstring(L, groupname);
@@ -130,7 +143,6 @@ void *aux_getgroupudata(lua_State *L, const char *groupname, int objidx)
 * Get a userdata pointer if object belongs to a given class. Return NULL 
 * otherwise
 \*-------------------------------------------------------------------------*/
-void *aux_getclassudata(lua_State *L, const char *classname, int objidx)
-{
+void *aux_getclassudata(lua_State *L, const char *classname, int objidx) {
     return luaL_checkudata(L, objidx, classname);
 }