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#include <squirrel.h>

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#include <sqstdio.h>

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#include "stdafx.h"

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#include "debug.h"

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#include "squirrel.hpp"

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#include "squirrel_std.hpp"

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#include "core/alloc_func.hpp"

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/* abs() is normally defined to myabs(), which we don't want in this file */

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#undef abs

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SQInteger SquirrelStd::abs(HSQUIRRELVM vm)

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{

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	SQInteger tmp;

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	sq_getinteger(vm, 2, &tmp);

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	sq_pushinteger(vm, ::abs(tmp));

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	return 1;

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}

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SQInteger SquirrelStd::require(HSQUIRRELVM vm)

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{

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	SQInteger top = sq_gettop(vm);

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	const SQChar *filename;

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	SQChar *real_filename;

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	sq_getstring(vm, 2, &filename);

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	/* Get the script-name of the current file, so we can work relative from it */

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	SQStackInfos si;

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	sq_stackinfos(vm, 1, &si);

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	if (si.source == NULL) {

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		DEBUG(misc, 0, "[squirrel] Couldn't detect the script-name of the 'require'-caller; this should never happen!");

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		return SQ_ERROR;

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	}

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	real_filename = scstrdup(si.source);

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	/* Keep the dir, remove the rest */

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	SQChar *s = scstrrchr(real_filename, PATHSEPCHAR);

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	if (s != NULL) {

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		/* Keep the PATHSEPCHAR there, remove the rest */

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		*s++;

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		*s = '\0';

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	}

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	/* And now we concat, so we are relative from the current script

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	 * First, we have to make sure we have enough space for the full path */

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	real_filename = ReallocT(real_filename, scstrlen(real_filename) + scstrlen(filename) + 1);

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	scstrcat(real_filename, filename);

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	/* Make sure we are in the root-table, so everything is included in the root-level */

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	sq_pushroottable(vm);

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	/* Compile and load the file */

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	if (!SQ_SUCCEEDED(sqstd_dofile(vm, real_filename, SQFalse, SQTrue))) {

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		DEBUG(misc, 0, "[squirrel] Failed to compile '%s'", filename);

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	}

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	/* Reset the top, so the stack stays correct */

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	sq_settop(vm, top);

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}

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void squirrel_register_global_std(Squirrel *engine)

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{

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	/* We don't use squirrel_helper here, as we want to register to the global

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	 *  scope and not to a class. */

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	engine->AddMethod("require", &SquirrelStd::require, 2, "?s");

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}

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void squirrel_register_std(Squirrel *engine)

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{

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	/* We don't use squirrel_helper here, as we want to register to the global

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	 *  scope and not to a class. */

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	engine->AddMethod("abs", &SquirrelStd::abs, 2, "xi");

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}