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-rw-r--r--lib/BLua.cc1329
1 files changed, 667 insertions, 662 deletions
diff --git a/lib/BLua.cc b/lib/BLua.cc
index 1c125a2..9366dd8 100644
--- a/lib/BLua.cc
+++ b/lib/BLua.cc
@@ -1,662 +1,667 @@
-/*
- * Baltisot
- * Copyright (C) 1999-2003 Nicolas "Pixel" Noble
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/* $Id: BLua.cc,v 1.20 2004-07-23 13:08:23 pixel Exp $ */
-
-#include "BLua.h"
-#include <lualib.h>
-
-#ifndef BUFFERSIZE
-#define BUFFERSIZE 2048
-#endif
-
-
-
-extern "C" {
- void do_lua_lock(lua_State * _L) {
- Lua * L;
- try {
- L = Lua::find(_L);
- } catch (GeneralException e) {
- return;
- }
- L->lock();
- }
-
- void do_lua_unlock(lua_State * _L) {
- Lua * L;
- try {
- L = Lua::find(_L);
- } catch (GeneralException e) {
- return;
- }
- L->unlock();
- }
-}
-
-class LuaStatics : public Base {
- public:
- static const char * getF(lua_State *, void *, size_t *);
- static int putF(lua_State *, const void *, size_t, void *);
- static int luapanic(lua_State *);
- static int trueluapanic(lua_State *) throw(GeneralException);
- static int collector(lua_State *);
- static int destructor(lua_State *);
-
- static int andB(lua_State *);
- static int orB(lua_State *);
- static int xorB(lua_State *);
- static int notB(lua_State *);
- static int hex(lua_State *);
- static int shl(lua_State *);
- static int shr(lua_State *);
-};
-
-std::map<lua_State *, Lua *> Lua::lualist;
-
-int LuaStatics::luapanic(lua_State * L) {
- return trueluapanic(L);
-}
-
-int LuaStatics::trueluapanic(lua_State * L) throw (GeneralException) {
- Lua::find(L)->showerror();
- throw LuaException("Error running Lua code, bailing out.");
-}
-
-int LuaStatics::andB(lua_State * _L) {
- Lua * L = Lua::find(_L);
- int n = L->gettop();
- Uint32 a, b;
-
- if ((n != 2) && !L->isnumber(1) && !L->isnumber(2)) {
- L->error("Incorrect arguments to function `andB'");
- }
-
- a = L->tonumber(1);
- b = L->tonumber(2);
-
- L->push((lua_Number) (a & b));
-
- return 1;
-}
-
-int LuaStatics::orB(lua_State * _L) {
- Lua * L = Lua::find(_L);
- int n = L->gettop();
- Uint32 a, b;
-
- if ((n != 2) && !L->isnumber(1) && !L->isnumber(2)) {
- L->error("Incorrect arguments to function `orB'");
- }
-
- a = L->tonumber(1);
- b = L->tonumber(2);
-
- L->push((lua_Number) (a | b));
-
- return 1;
-}
-
-int LuaStatics::xorB(lua_State * _L) {
- Lua * L = Lua::find(_L);
- int n = L->gettop();
- Uint32 a, b;
-
- if ((n != 2) && !L->isnumber(1) && !L->isnumber(2)) {
- L->error("Incorrect arguments to function `xorB'");
- }
-
- a = L->tonumber(1);
- b = L->tonumber(2);
-
- L->push((lua_Number) (a ^ b));
-
- return 1;
-}
-
-int LuaStatics::notB(lua_State * _L) {
- Lua * L = Lua::find(_L);
- int n = L->gettop();
- Uint32 x;
-
- if ((n != 1) && !L->isnumber()) {
- L->error("Incorrect arguments to function `notB'");
- }
-
- x = L->tonumber();
-
- L->push((lua_Number) (~x));
-
- return 1;
-}
-
-int LuaStatics::shl(lua_State * _L) {
- Lua * L = Lua::find(_L);
- int n = L->gettop();
- Uint32 a, b;
-
- if ((n > 2) && !L->isnumber(1) && ((n == 2) && !L->isnumber(2))) {
- L->error("Incorrect arguments to function `shl'");
- }
-
- a = L->tonumber(1);
- if (n == 2)
- b = L->tonumber(2);
- else
- b = 1;
-
- L->push((lua_Number) (a << b));
-
- return 1;
-}
-
-int LuaStatics::shr(lua_State * _L) {
- Lua * L = Lua::find(_L);
- int n = L->gettop();
- Uint32 a, b;
-
- if ((n > 2) && !L->isnumber(1) && ((n == 2) && !L->isnumber(2))) {
- L->error("Incorrect arguments to function `shr'");
- }
-
- a = L->tonumber(1);
- if (n == 2)
- b = L->tonumber(2);
- else
- b = 1;
-
- L->push((lua_Number) (a >> b));
-
- return 1;
-}
-
-int LuaStatics::hex(lua_State * _L) {
- Lua * L = Lua::find(_L);
- int n = L->gettop();
- int x;
- String r;
-
- if (((n != 1) || (n != 2)) && !L->isnumber(1) && ((n == 2) && !L->isstring(2))) {
- L->error("Incorrect arguments to function `hex'");
- }
-
- x = L->tonumber(1);
- String fmt = n == 2 ? L->tostring() : "%02x";
- r.set(fmt.to_charp(), x);
-
- L->push(r);
-
- return 1;
-}
-
-Lua::Lua() : L(lua_open()) {
- lua_atpanic(L, LuaStatics::luapanic);
- lualist[L] = this;
-
- declarefunc("andB", LuaStatics::andB);
- declarefunc("orB", LuaStatics::orB);
- declarefunc("xorB", LuaStatics::xorB);
- declarefunc("notB", LuaStatics::notB);
- declarefunc("shl", LuaStatics::shl);
- declarefunc("shr", LuaStatics::shr);
- declarefunc("hex", LuaStatics::hex);
-}
-
-Lua::Lua(lua_State * _L) : L(_L) {
- lua_atpanic(L, LuaStatics::luapanic);
- lualist[L] = this;
-}
-
-Lua::~Lua() {
- lua_setgcthreshold(L, 0);
- lua_close(L);
-}
-
-Lua::Lua(const Lua & l) throw (GeneralException) {
- throw GeneralException("Error: can't duplicate a Lua object.");
-}
-
-void Lua::open_base() {
- luaopen_base(L);
- lua_pop(L, 1);
-}
-
-void Lua::open_table() {
- luaopen_table(L);
- lua_pop(L, 1);
-}
-
-void Lua::open_io() {
- luaopen_io(L);
- lua_pop(L, 1);
-}
-
-void Lua::open_string() {
- luaopen_string(L);
- lua_pop(L, 1);
-}
-
-void Lua::open_math() {
- luaopen_math(L);
- lua_pop(L, 1);
-}
-
-void Lua::open_debug() {
- luaopen_debug(L);
- lua_pop(L, 1);
-}
-
-void Lua::declarefunc(const String & name, lua_CFunction f, int i) {
- lua_pushstring(L, name.to_charp());
- lua_pushcfunction(L, f);
- lua_settable(L, i);
-}
-
-void Lua::call(const String & f, int i, int nargs, int nresults) {
- lua_pushstring(L, f.to_charp());
- lua_gettable(L, i);
- lua_insert(L, -1 - nargs - nresults);
- lua_call(L, nargs, nresults);
-}
-
-void Lua::call(int nargs, int nresults) {
- lua_call(L, nargs, nresults);
-}
-
-void Lua::push() {
- lua_pushnil(L);
-}
-
-void Lua::push(lua_Number n) {
- lua_pushnumber(L, n);
-}
-
-void Lua::push(const String & s) {
- lua_pushlstring(L, s.to_charp(), s.strlen());
-}
-
-void Lua::push(bool b) {
- lua_pushboolean(L, b);
-}
-
-void Lua::push(char * s, int size) {
- if (size < 0) {
- lua_pushstring(L, s);
- } else {
- lua_pushlstring(L, s, size);
- }
-}
-
-void Lua::push(void * p) {
- lua_pushlightuserdata(L, p);
-}
-
-void Lua::push(lua_CFunction f, int n) {
- lua_pushcclosure(L, f, n);
-}
-
-void Lua::pop(int n) {
- lua_pop(L, n);
-}
-
-void Lua::newtable() {
- lua_newtable(L);
-}
-
-void * Lua::newuser(size_t s) {
- return lua_newuserdata(L, s);
-}
-
-void Lua::settable(int i, bool raw) {
- if (raw) {
- lua_rawset(L, i);
- } else {
- lua_settable(L, i);
- }
-}
-
-void Lua::gettable(int i, bool raw) {
- if (raw) {
- lua_rawget(L, i);
- } else {
- lua_gettable(L, i);
- }
-}
-
-void Lua::setvar() {
- lua_settable(L, LUA_GLOBALSINDEX);
-}
-
-int Lua::gettop() {
- return lua_gettop(L);
-}
-
-void Lua::error(const String & msg) {
- push(msg);
- lua_error(L);
-}
-
-int Lua::type(int i) {
- return lua_type(L, i);
-}
-
-bool Lua::isnil(int i) {
- return lua_isnil(L, i);
-}
-
-bool Lua::isboolean(int i) {
- return lua_isboolean(L, i);
-}
-
-bool Lua::isnumber(int i) {
- return lua_isnumber(L, i);
-}
-
-bool Lua::isstring(int i) {
- return lua_isstring(L, i);
-}
-
-bool Lua::istable(int i) {
- return lua_istable(L, i);
-}
-
-bool Lua::isfunction(int i) {
- return lua_isfunction(L, i);
-}
-
-bool Lua::iscfunction(int i) {
- return lua_iscfunction(L, i);
-}
-
-bool Lua::isuserdata(int i) {
- return lua_isuserdata(L, i);
-}
-
-bool Lua::islightuserdata(int i) {
- return lua_islightuserdata(L, i);
-}
-
-bool Lua::toboolean(int i) {
- return lua_toboolean(L, i);
-}
-
-lua_Number Lua::tonumber(int i) {
- return lua_tonumber(L, i);
-}
-
-String Lua::tostring(int i) {
- if (isnil(i))
- return String();
- return String(lua_tostring(L, i));
-}
-
-lua_CFunction Lua::tocfunction(int i) {
- return lua_tocfunction(L, i);
-}
-
-void * Lua::touserdata(int i) {
- return lua_touserdata(L, i);
-}
-
-Lua * Lua::tothread(int i) {
- return find(lua_tothread(L, i));
-}
-
-struct LoadF {
- Handle * f;
- char buff[BUFFERSIZE];
-};
-
-const char * LuaStatics::getF(lua_State * L, void * ud, size_t * size) {
- LoadF *lf = (LoadF *)ud;
- (void)L;
-
- *size = lf->f->read(lf->buff, BUFFERSIZE);
- return (*size > 0) ? lf->buff : NULL;
-}
-
-struct DumpF {
- Handle * f;
-};
-
-int LuaStatics::putF(lua_State * L, const void * p, size_t size, void * ud) {
- DumpF *lf = (DumpF *)ud;
- (void)L;
-
- return lf->f->write(p, size) == size;
-}
-
-void Lua::load(Handle * h, bool docall) throw (GeneralException) {
- LoadF lf;
- int status;
-
- lf.f = h;
-
- status = lua_load(L, LuaStatics::getF, &lf, h->GetName().to_charp());
-
- if (status) {
- showerror();
- throw LuaException("Error loading lua chunk from Handle `" + h->GetName() + "'");
- }
-
- if (docall)
- call();
-}
-
-extern "C" void luacmain(lua_State * L, int stripping, lua_Chunkwriter w, void * uD);
-
-void Lua::dump(Handle * h, bool strip) {
- DumpF lf;
-
- lf.f = h;
-
- luacmain(L, strip, LuaStatics::putF, &lf);
-}
-
-Lua * Lua::thread() {
- return new Lua(lua_newthread(L));
-}
-
-int Lua::yield(int nargs) {
- return lua_yield(L, nargs);
-}
-
-int Lua::resume(int nresults) {
- return lua_resume(L, nresults);
-}
-
-Lua * Lua::find(lua_State * _L) throw (GeneralException) {
- std::map<lua_State *, Lua *>::iterator i;
-
- if ((i = lualist.find(_L)) == lualist.end()) {
- throw GeneralException("Unable to find the Lua object for this context");
- }
-
- return i->second;
-}
-
-void Lua::showerror() {
- int n = lua_gettop(L);
- int i;
- String t;
-
- printm(M_ERROR, "Lua object: Got an LUA error\n");
- printm(M_ERROR, "Inspecting LUA stack\n");
-
- if (n == 0) {
- printm(M_ERROR, "Stack empty\n");
- return;
- }
-
- for (i = 1; i <= n; i++) {
- switch(lua_type(L, i)) {
- case LUA_TNONE:
- t = "Invalid";
- break;
- case LUA_TNIL:
- t = "(Nil)";
- break;
- case LUA_TNUMBER:
- t.set("(Number) %f", lua_tonumber(L, i));
- break;
- case LUA_TBOOLEAN:
- t = String("(Bool) ") + (lua_toboolean(L, i) ? "true" : "false");
- break;
- case LUA_TSTRING:
- t = String("(String) ") + lua_tostring(L, i);
- break;
- case LUA_TTABLE:
- t = "(Table)";
- break;
- case LUA_TFUNCTION:
- t = "(Function)";
- break;
- default:
- t = "Unknown";
- }
-
- printm(M_ERROR, String(i) + ": " + t + "\n");
- }
-}
-
-int Lua::getmetatable(int i) {
- return lua_getmetatable(L, i);
-}
-
-int Lua::setmetatable(int i) {
- return lua_setmetatable(L, i);
-}
-
-int Lua::sethook(lua_Hook func, int mask, int count) {
- return lua_sethook(L, func, mask, count);
-}
-
-void Lua::do_break() {
- lua_break(L);
-}
-
-void LuaObject::push(Lua * L) throw (GeneralException) {
- if (pushed && wantdestruct) {
- throw GeneralException("Error: object is owned by the LUA script and can not be pushed.");
- }
- L->newtable();
- pushmembers(L);
- pushed = true;
-}
-
-void LuaObject::pushme(Lua * L, void * o, bool obj) {
- void ** u;
- bool * b;
- L->push("__obj");
- u = (void **) L->newuser(sizeof(o) + sizeof(bool));
- *u = o;
- b = (bool *) (u + 1);
- *b = obj;
- L->settable(-3, true);
-}
-
-void * LuaObject::getme(Lua * L, int i) {
- void ** r = 0;
-
- if (L->istable(i)) {
- L->push("__obj");
- L->gettable(i, true);
- if (!(r = (void **) L->touserdata()))
- L->error("Table is not an object.");
- if (!*r)
- L->error("Object already destroyed.");
- L->pop();
- } else if (L->isnil(i)) {
- r = 0;
- } else {
- L->error("Not an object (not even a table).");
- }
-
- return r ? *r : 0;
-}
-
-void LuaObject::pushit(Lua * L, const String & s, lua_CFunction f) {
- L->push(s);
- L->push(f);
- L->settable(-3, true);
-}
-
-void LuaObject::pushmeta(Lua * L, const String & s, lua_CFunction f) {
- if (!L->getmetatable()) {
- L->newtable();
- }
- L->push(s);
- L->push(f);
- L->settable();
- L->setmetatable();
-}
-
-int LuaStatics::collector(lua_State * _L) {
- Lua * L = Lua::find(_L);
- void ** u = (void **) L->touserdata();
- bool * obj = (bool *) (u + 1);
-// printm(M_INFO, "From LUA: collecting object\n");
- if (*obj) {
-// printm(M_INFO, "Is object at %p\n", *u);
- Base * b = (Base *) *u;
- delete b;
- } else {
-// printm(M_INFO, "Is struct at %p\n", *u);
- free(*u);
- }
- *u = 0;
- return 0;
-}
-
-int LuaStatics::destructor(lua_State * _L) {
- Lua * L = Lua::find(_L);
- Base * b = (Base *) LuaObject::getme(L);
- delete b;
- L->push("__obj");
- L->gettable(-2, true);
- void ** u = (void **) L->touserdata();
- bool * obj = (bool *) (u + 1);
- if (*obj) {
- Base * b = (Base *) *u;
- delete b;
- } else {
- free(*u);
- }
- *u = 0;
- L->pop();
- return 0;
-}
-
-void LuaObject::pushdestruct(Lua * L) throw (GeneralException) {
- if (pushed) {
- throw GeneralException("Error: can't push destructor, object already pushed");
- }
- push(L);
- L->push("__obj");
- L->gettable(-2, true);
- pushmeta(L, "__gc", LuaStatics::collector);
- L->pop();
- pushit(L, "destroy", LuaStatics::destructor);
-
- wantdestruct = true;
-}
-
-LuaException::LuaException(String fn) : GeneralException(fn) { }
-
-LuaException::LuaException() { }
+/*
+ * Baltisot
+ * Copyright (C) 1999-2003 Nicolas "Pixel" Noble
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+/* $Id: BLua.cc,v 1.21 2004-11-27 21:01:20 pixel Exp $ */
+
+#include "BLua.h"
+#include <lualib.h>
+
+#ifndef BUFFERSIZE
+#define BUFFERSIZE 2048
+#endif
+
+
+
+extern "C" {
+ void do_lua_lock(lua_State * _L) {
+ Lua * L;
+ try {
+ L = Lua::find(_L);
+ } catch (GeneralException e) {
+ return;
+ }
+ L->lock();
+ }
+
+ void do_lua_unlock(lua_State * _L) {
+ Lua * L;
+ try {
+ L = Lua::find(_L);
+ } catch (GeneralException e) {
+ return;
+ }
+ L->unlock();
+ }
+}
+
+class LuaStatics : public Base {
+ public:
+ static const char * getF(lua_State *, void *, size_t *);
+ static int putF(lua_State *, const void *, size_t, void *);
+ static int luapanic(lua_State *);
+ static int trueluapanic(lua_State *) throw(GeneralException);
+ static int collector(lua_State *);
+ static int destructor(lua_State *);
+
+ static int andB(lua_State *);
+ static int orB(lua_State *);
+ static int xorB(lua_State *);
+ static int notB(lua_State *);
+ static int hex(lua_State *);
+ static int shl(lua_State *);
+ static int shr(lua_State *);
+};
+
+std::map<lua_State *, Lua *> Lua::lualist;
+
+int LuaStatics::luapanic(lua_State * L) {
+ return trueluapanic(L);
+}
+
+int LuaStatics::trueluapanic(lua_State * L) throw (GeneralException) {
+ Lua::find(L)->showerror();
+ throw LuaException("Error running Lua code, bailing out.");
+}
+
+int LuaStatics::andB(lua_State * _L) {
+ Lua * L = Lua::find(_L);
+ int n = L->gettop();
+ Uint32 a, b;
+
+ if ((n != 2) && !L->isnumber(1) && !L->isnumber(2)) {
+ L->error("Incorrect arguments to function `andB'");
+ }
+
+ a = L->tonumber(1);
+ b = L->tonumber(2);
+
+ L->push((lua_Number) (a & b));
+
+ return 1;
+}
+
+int LuaStatics::orB(lua_State * _L) {
+ Lua * L = Lua::find(_L);
+ int n = L->gettop();
+ Uint32 a, b;
+
+ if ((n != 2) && !L->isnumber(1) && !L->isnumber(2)) {
+ L->error("Incorrect arguments to function `orB'");
+ }
+
+ a = L->tonumber(1);
+ b = L->tonumber(2);
+
+ L->push((lua_Number) (a | b));
+
+ return 1;
+}
+
+int LuaStatics::xorB(lua_State * _L) {
+ Lua * L = Lua::find(_L);
+ int n = L->gettop();
+ Uint32 a, b;
+
+ if ((n != 2) && !L->isnumber(1) && !L->isnumber(2)) {
+ L->error("Incorrect arguments to function `xorB'");
+ }
+
+ a = L->tonumber(1);
+ b = L->tonumber(2);
+
+ L->push((lua_Number) (a ^ b));
+
+ return 1;
+}
+
+int LuaStatics::notB(lua_State * _L) {
+ Lua * L = Lua::find(_L);
+ int n = L->gettop();
+ Uint32 x;
+
+ if ((n != 1) && !L->isnumber()) {
+ L->error("Incorrect arguments to function `notB'");
+ }
+
+ x = L->tonumber();
+
+ L->push((lua_Number) (~x));
+
+ return 1;
+}
+
+int LuaStatics::shl(lua_State * _L) {
+ Lua * L = Lua::find(_L);
+ int n = L->gettop();
+ Uint32 a, b;
+
+ if ((n > 2) && !L->isnumber(1) && ((n == 2) && !L->isnumber(2))) {
+ L->error("Incorrect arguments to function `shl'");
+ }
+
+ a = L->tonumber(1);
+ if (n == 2)
+ b = L->tonumber(2);
+ else
+ b = 1;
+
+ L->push((lua_Number) (a << b));
+
+ return 1;
+}
+
+int LuaStatics::shr(lua_State * _L) {
+ Lua * L = Lua::find(_L);
+ int n = L->gettop();
+ Uint32 a, b;
+
+ if ((n > 2) && !L->isnumber(1) && ((n == 2) && !L->isnumber(2))) {
+ L->error("Incorrect arguments to function `shr'");
+ }
+
+ a = L->tonumber(1);
+ if (n == 2)
+ b = L->tonumber(2);
+ else
+ b = 1;
+
+ L->push((lua_Number) (a >> b));
+
+ return 1;
+}
+
+int LuaStatics::hex(lua_State * _L) {
+ Lua * L = Lua::find(_L);
+ int n = L->gettop();
+ int x;
+ String r;
+
+ if (((n != 1) || (n != 2)) && !L->isnumber(1) && ((n == 2) && !L->isstring(2))) {
+ L->error("Incorrect arguments to function `hex'");
+ }
+
+ x = L->tonumber(1);
+ String fmt = n == 2 ? L->tostring() : "%02x";
+ r.set(fmt.to_charp(), x);
+
+ L->push(r);
+
+ return 1;
+}
+
+Lua::Lua() : L(lua_open()) {
+ lua_atpanic(L, LuaStatics::luapanic);
+ lualist[L] = this;
+
+ declarefunc("andB", LuaStatics::andB);
+ declarefunc("orB", LuaStatics::orB);
+ declarefunc("xorB", LuaStatics::xorB);
+ declarefunc("notB", LuaStatics::notB);
+ declarefunc("shl", LuaStatics::shl);
+ declarefunc("shr", LuaStatics::shr);
+ declarefunc("hex", LuaStatics::hex);
+}
+
+Lua::Lua(lua_State * _L) : L(_L) {
+ lua_atpanic(L, LuaStatics::luapanic);
+ lualist[L] = this;
+}
+
+Lua::~Lua() {
+ lua_setgcthreshold(L, 0);
+ lua_close(L);
+}
+
+Lua::Lua(const Lua & l) throw (GeneralException) {
+ throw GeneralException("Error: can't duplicate a Lua object.");
+}
+
+void Lua::open_base() {
+ luaopen_base(L);
+ lua_pop(L, 1);
+}
+
+void Lua::open_table() {
+ luaopen_table(L);
+ lua_pop(L, 1);
+}
+
+void Lua::open_io() {
+ luaopen_io(L);
+ lua_pop(L, 1);
+}
+
+void Lua::open_string() {
+ luaopen_string(L);
+ lua_pop(L, 1);
+}
+
+void Lua::open_math() {
+ luaopen_math(L);
+ lua_pop(L, 1);
+}
+
+void Lua::open_debug() {
+ luaopen_debug(L);
+ lua_pop(L, 1);
+}
+
+void Lua::open_dir() {
+ luaopen_dir(L);
+ lua_pop(L, 1);
+}
+
+void Lua::declarefunc(const String & name, lua_CFunction f, int i) {
+ lua_pushstring(L, name.to_charp());
+ lua_pushcfunction(L, f);
+ lua_settable(L, i);
+}
+
+void Lua::call(const String & f, int i, int nargs, int nresults) {
+ lua_pushstring(L, f.to_charp());
+ lua_gettable(L, i);
+ lua_insert(L, -1 - nargs - nresults);
+ lua_call(L, nargs, nresults);
+}
+
+void Lua::call(int nargs, int nresults) {
+ lua_call(L, nargs, nresults);
+}
+
+void Lua::push() {
+ lua_pushnil(L);
+}
+
+void Lua::push(lua_Number n) {
+ lua_pushnumber(L, n);
+}
+
+void Lua::push(const String & s) {
+ lua_pushlstring(L, s.to_charp(), s.strlen());
+}
+
+void Lua::push(bool b) {
+ lua_pushboolean(L, b);
+}
+
+void Lua::push(char * s, int size) {
+ if (size < 0) {
+ lua_pushstring(L, s);
+ } else {
+ lua_pushlstring(L, s, size);
+ }
+}
+
+void Lua::push(void * p) {
+ lua_pushlightuserdata(L, p);
+}
+
+void Lua::push(lua_CFunction f, int n) {
+ lua_pushcclosure(L, f, n);
+}
+
+void Lua::pop(int n) {
+ lua_pop(L, n);
+}
+
+void Lua::newtable() {
+ lua_newtable(L);
+}
+
+void * Lua::newuser(size_t s) {
+ return lua_newuserdata(L, s);
+}
+
+void Lua::settable(int i, bool raw) {
+ if (raw) {
+ lua_rawset(L, i);
+ } else {
+ lua_settable(L, i);
+ }
+}
+
+void Lua::gettable(int i, bool raw) {
+ if (raw) {
+ lua_rawget(L, i);
+ } else {
+ lua_gettable(L, i);
+ }
+}
+
+void Lua::setvar() {
+ lua_settable(L, LUA_GLOBALSINDEX);
+}
+
+int Lua::gettop() {
+ return lua_gettop(L);
+}
+
+void Lua::error(const String & msg) {
+ push(msg);
+ lua_error(L);
+}
+
+int Lua::type(int i) {
+ return lua_type(L, i);
+}
+
+bool Lua::isnil(int i) {
+ return lua_isnil(L, i);
+}
+
+bool Lua::isboolean(int i) {
+ return lua_isboolean(L, i);
+}
+
+bool Lua::isnumber(int i) {
+ return lua_isnumber(L, i);
+}
+
+bool Lua::isstring(int i) {
+ return lua_isstring(L, i);
+}
+
+bool Lua::istable(int i) {
+ return lua_istable(L, i);
+}
+
+bool Lua::isfunction(int i) {
+ return lua_isfunction(L, i);
+}
+
+bool Lua::iscfunction(int i) {
+ return lua_iscfunction(L, i);
+}
+
+bool Lua::isuserdata(int i) {
+ return lua_isuserdata(L, i);
+}
+
+bool Lua::islightuserdata(int i) {
+ return lua_islightuserdata(L, i);
+}
+
+bool Lua::toboolean(int i) {
+ return lua_toboolean(L, i);
+}
+
+lua_Number Lua::tonumber(int i) {
+ return lua_tonumber(L, i);
+}
+
+String Lua::tostring(int i) {
+ if (isnil(i))
+ return String();
+ return String(lua_tostring(L, i));
+}
+
+lua_CFunction Lua::tocfunction(int i) {
+ return lua_tocfunction(L, i);
+}
+
+void * Lua::touserdata(int i) {
+ return lua_touserdata(L, i);
+}
+
+Lua * Lua::tothread(int i) {
+ return find(lua_tothread(L, i));
+}
+
+struct LoadF {
+ Handle * f;
+ char buff[BUFFERSIZE];
+};
+
+const char * LuaStatics::getF(lua_State * L, void * ud, size_t * size) {
+ LoadF *lf = (LoadF *)ud;
+ (void)L;
+
+ *size = lf->f->read(lf->buff, BUFFERSIZE);
+ return (*size > 0) ? lf->buff : NULL;
+}
+
+struct DumpF {
+ Handle * f;
+};
+
+int LuaStatics::putF(lua_State * L, const void * p, size_t size, void * ud) {
+ DumpF *lf = (DumpF *)ud;
+ (void)L;
+
+ return lf->f->write(p, size) == size;
+}
+
+void Lua::load(Handle * h, bool docall) throw (GeneralException) {
+ LoadF lf;
+ int status;
+
+ lf.f = h;
+
+ status = lua_load(L, LuaStatics::getF, &lf, h->GetName().to_charp());
+
+ if (status) {
+ showerror();
+ throw LuaException("Error loading lua chunk from Handle `" + h->GetName() + "'");
+ }
+
+ if (docall)
+ call();
+}
+
+extern "C" void luacmain(lua_State * L, int stripping, lua_Chunkwriter w, void * uD);
+
+void Lua::dump(Handle * h, bool strip) {
+ DumpF lf;
+
+ lf.f = h;
+
+ luacmain(L, strip, LuaStatics::putF, &lf);
+}
+
+Lua * Lua::thread() {
+ return new Lua(lua_newthread(L));
+}
+
+int Lua::yield(int nargs) {
+ return lua_yield(L, nargs);
+}
+
+int Lua::resume(int nresults) {
+ return lua_resume(L, nresults);
+}
+
+Lua * Lua::find(lua_State * _L) throw (GeneralException) {
+ std::map<lua_State *, Lua *>::iterator i;
+
+ if ((i = lualist.find(_L)) == lualist.end()) {
+ throw GeneralException("Unable to find the Lua object for this context");
+ }
+
+ return i->second;
+}
+
+void Lua::showerror() {
+ int n = lua_gettop(L);
+ int i;
+ String t;
+
+ printm(M_ERROR, "Lua object: Got an LUA error\n");
+ printm(M_ERROR, "Inspecting LUA stack\n");
+
+ if (n == 0) {
+ printm(M_ERROR, "Stack empty\n");
+ return;
+ }
+
+ for (i = 1; i <= n; i++) {
+ switch(lua_type(L, i)) {
+ case LUA_TNONE:
+ t = "Invalid";
+ break;
+ case LUA_TNIL:
+ t = "(Nil)";
+ break;
+ case LUA_TNUMBER:
+ t.set("(Number) %f", lua_tonumber(L, i));
+ break;
+ case LUA_TBOOLEAN:
+ t = String("(Bool) ") + (lua_toboolean(L, i) ? "true" : "false");
+ break;
+ case LUA_TSTRING:
+ t = String("(String) ") + lua_tostring(L, i);
+ break;
+ case LUA_TTABLE:
+ t = "(Table)";
+ break;
+ case LUA_TFUNCTION:
+ t = "(Function)";
+ break;
+ default:
+ t = "Unknown";
+ }
+
+ printm(M_ERROR, String(i) + ": " + t + "\n");
+ }
+}
+
+int Lua::getmetatable(int i) {
+ return lua_getmetatable(L, i);
+}
+
+int Lua::setmetatable(int i) {
+ return lua_setmetatable(L, i);
+}
+
+int Lua::sethook(lua_Hook func, int mask, int count) {
+ return lua_sethook(L, func, mask, count);
+}
+
+void Lua::do_break() {
+ lua_break(L);
+}
+
+void LuaObject::push(Lua * L) throw (GeneralException) {
+ if (pushed && wantdestruct) {
+ throw GeneralException("Error: object is owned by the LUA script and can not be pushed.");
+ }
+ L->newtable();
+ pushmembers(L);
+ pushed = true;
+}
+
+void LuaObject::pushme(Lua * L, void * o, bool obj) {
+ void ** u;
+ bool * b;
+ L->push("__obj");
+ u = (void **) L->newuser(sizeof(o) + sizeof(bool));
+ *u = o;
+ b = (bool *) (u + 1);
+ *b = obj;
+ L->settable(-3, true);
+}
+
+void * LuaObject::getme(Lua * L, int i) {
+ void ** r = 0;
+
+ if (L->istable(i)) {
+ L->push("__obj");
+ L->gettable(i, true);
+ if (!(r = (void **) L->touserdata()))
+ L->error("Table is not an object.");
+ if (!*r)
+ L->error("Object already destroyed.");
+ L->pop();
+ } else if (L->isnil(i)) {
+ r = 0;
+ } else {
+ L->error("Not an object (not even a table).");
+ }
+
+ return r ? *r : 0;
+}
+
+void LuaObject::pushit(Lua * L, const String & s, lua_CFunction f) {
+ L->push(s);
+ L->push(f);
+ L->settable(-3, true);
+}
+
+void LuaObject::pushmeta(Lua * L, const String & s, lua_CFunction f) {
+ if (!L->getmetatable()) {
+ L->newtable();
+ }
+ L->push(s);
+ L->push(f);
+ L->settable();
+ L->setmetatable();
+}
+
+int LuaStatics::collector(lua_State * _L) {
+ Lua * L = Lua::find(_L);
+ void ** u = (void **) L->touserdata();
+ bool * obj = (bool *) (u + 1);
+// printm(M_INFO, "From LUA: collecting object\n");
+ if (*obj) {
+// printm(M_INFO, "Is object at %p\n", *u);
+ Base * b = (Base *) *u;
+ delete b;
+ } else {
+// printm(M_INFO, "Is struct at %p\n", *u);
+ free(*u);
+ }
+ *u = 0;
+ return 0;
+}
+
+int LuaStatics::destructor(lua_State * _L) {
+ Lua * L = Lua::find(_L);
+ Base * b = (Base *) LuaObject::getme(L);
+ delete b;
+ L->push("__obj");
+ L->gettable(-2, true);
+ void ** u = (void **) L->touserdata();
+ bool * obj = (bool *) (u + 1);
+ if (*obj) {
+ Base * b = (Base *) *u;
+ delete b;
+ } else {
+ free(*u);
+ }
+ *u = 0;
+ L->pop();
+ return 0;
+}
+
+void LuaObject::pushdestruct(Lua * L) throw (GeneralException) {
+ if (pushed) {
+ throw GeneralException("Error: can't push destructor, object already pushed");
+ }
+ push(L);
+ L->push("__obj");
+ L->gettable(-2, true);
+ pushmeta(L, "__gc", LuaStatics::collector);
+ L->pop();
+ pushit(L, "destroy", LuaStatics::destructor);
+
+ wantdestruct = true;
+}
+
+LuaException::LuaException(String fn) : GeneralException(fn) { }
+
+LuaException::LuaException() { }
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-25 05:07:55 +0000