# squirrel_std.cpp

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    00001 /* $Id: squirrel_std.cpp 17498 2009-09-10 20:19:12Z yexo $ */
    00002
    00003 /*
    00004  * This file is part of OpenTTD.
    00005  * OpenTTD 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, version 2.
    00006  * OpenTTD 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.
    00007  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
    00008  */
    00009
    00012 #include <squirrel.h>
    00013 #include <sqstdmath.h>
    00014 #include "../stdafx.h"
    00015 #include "../debug.h"
    00016 #include "squirrel.hpp"
    00017 #include "squirrel_std.hpp"
    00018 #include "../core/alloc_func.hpp"
    00019 #include "../core/math_func.hpp"
    00020
    00021
    00022 SQInteger SquirrelStd::min(HSQUIRRELVM vm)
    00023 {
    00024   SQInteger tmp1, tmp2;
    00025
    00026   sq_getinteger(vm, 2, &tmp1);
    00027   sq_getinteger(vm, 3, &tmp2);
    00028   sq_pushinteger(vm, ::min(tmp1, tmp2));
    00029   return 1;
    00030 }
    00031
    00032 SQInteger SquirrelStd::max(HSQUIRRELVM vm)
    00033 {
    00034   SQInteger tmp1, tmp2;
    00035
    00036   sq_getinteger(vm, 2, &tmp1);
    00037   sq_getinteger(vm, 3, &tmp2);
    00038   sq_pushinteger(vm, ::max(tmp1, tmp2));
    00039   return 1;
    00040 }
    00041
    00042 SQInteger SquirrelStd::require(HSQUIRRELVM vm)
    00043 {
    00044   SQInteger top = sq_gettop(vm);
    00045   const SQChar *filename;
    00046   SQChar *real_filename;
    00047
    00048   sq_getstring(vm, 2, &filename);
    00049
    00050   /* Get the script-name of the current file, so we can work relative from it */
    00051   SQStackInfos si;
    00052   sq_stackinfos(vm, 1, &si);
    00053   if (si.source == NULL) {
    00054     DEBUG(misc, 0, "[squirrel] Couldn't detect the script-name of the 'require'-caller; this should never happen!");
    00055     return SQ_ERROR;
    00056   }
    00057   real_filename = scstrdup(si.source);
    00058   /* Keep the dir, remove the rest */
    00059   SQChar *s = scstrrchr(real_filename, PATHSEPCHAR);
    00060   if (s != NULL) {
    00061     /* Keep the PATHSEPCHAR there, remove the rest */
    00062     s++;
    00063     *s = '\0';
    00064   }
    00065   /* And now we concat, so we are relative from the current script
    00066    * First, we have to make sure we have enough space for the full path */
    00067   real_filename = ReallocT(real_filename, scstrlen(real_filename) + scstrlen(filename) + 1);
    00068   scstrcat(real_filename, filename);
    00069   /* Tars dislike opening files with '/' on Windows.. so convert it to '\\' ;) */
    00070   char *filen = strdup(FS2OTTD(real_filename));
    00071 #if (PATHSEPCHAR != '/')
    00072   for (char *n = filen; *n != '\0'; n++) if (*n == '/') *n = PATHSEPCHAR;
    00073 #endif
    00074
    00075   bool ret = Squirrel::LoadScript(vm, filen);
    00076
    00077   /* Reset the top, so the stack stays correct */
    00078   sq_settop(vm, top);
    00079   free(real_filename);
    00080   free(filen);
    00081
    00082   return ret ? 0 : SQ_ERROR;
    00083 }
    00084
    00085 SQInteger SquirrelStd::notifyallexceptions(HSQUIRRELVM vm)
    00086 {
    00087   SQBool b;
    00088
    00089   if (sq_gettop(vm) >= 1) {
    00090     if (SQ_SUCCEEDED(sq_getbool(vm, -1, &b))) {
    00091       sq_notifyallexceptions(vm, b);
    00092       return 0;
    00093     }
    00094   }
    00095
    00096   return SQ_ERROR;
    00097 }
    00098
    00099 void squirrel_register_global_std(Squirrel *engine)
    00100 {
    00101   /* We don't use squirrel_helper here, as we want to register to the global
    00102    *  scope and not to a class. */
    00103   engine->AddMethod("require",             &SquirrelStd::require,             2, ".s");
    00104   engine->AddMethod("notifyallexceptions", &SquirrelStd::notifyallexceptions, 2, ".b");
    00105 }
    00106
    00107 void squirrel_register_std(Squirrel *engine)
    00108 {
    00109   /* We don't use squirrel_helper here, as we want to register to the global
    00110    *  scope and not to a class. */
    00111   engine->AddMethod("min", &SquirrelStd::min, 3, ".ii");
    00112   engine->AddMethod("max", &SquirrelStd::max, 3, ".ii");
    00113
    00114   sqstd_register_mathlib(engine->GetVM());
    00115 }