// This file is a part of Framsticks SDK.  http://www.framsticks.com/
// Copyright (C) 1999-2015  Maciej Komosinski and Szymon Ulatowski.
// See LICENSE.txt for details.

#include <stdio.h>
#include <ctype.h>

#include "param.h"
#include <frams/util/extvalue.h>
#include "common/hmessage.h"
#include <frams/util/sstringutils.h>

//#define SAVE_ALL_NAMES
#define SAVE_SELECTED_NAMES
#define WARN_MISSING_NAME

char MakeCodeGuardHappy;

ParamEntry empty_paramtab[] =
{ { "Empty", 1, 0, "Empty", }, { 0, 0, 0, }, };

static void czytdotyldy(VirtFILE *f, SString &s)
{
	SString temp;
	int z;
	char last_char = 0;
	while ((z = fgetc(f)) != EOF)
	{
		if (z == '~')
			if (last_char != '\\') break;
		last_char = (char)z;
		temp += last_char;
	}
	s = temp;
}

static const char *strchrlimit(const char *t, int ch, const char *limit)
{
	if (limit < t) return NULL;
	return (const char*)memchr((const void*)t, ch, limit - t);
}

void ParamInterface::copyFrom(ParamInterface *src)
{
	int n = getPropCount();
	ExtValue v;
	int j;
	for (int i = 0; i < n; i++)
		if ((!(flags(i)&PARAM_READONLY))
			&& (*type(i) != 'p'))
		{
		j = src->findId(id(i));
		if (j < 0) continue;
		src->get(j, v);
		set(i, v);
		}
}

void ParamInterface::quickCopyFrom(ParamInterface *src)
{
	int n = getPropCount();
	ExtValue v;
	for (int i = 0; i < n; i++)
		if ((!(flags(i)&PARAM_READONLY))
			&& (*type(i) != 'p'))
		{
		src->get(i, v);
		set(i, v);
		}
}

int ParamInterface::getMinMax(int prop, paInt& minumum, paInt& maximum, paInt &def)
{
	const char* t = type(prop) + 1;
	while (*t) if (*t == ' ') break; else t++;
	return sscanf(t, PA_INT_SCANF " " PA_INT_SCANF " " PA_INT_SCANF, &minumum, &maximum, &def);
}

int ParamInterface::getMinMax(int prop, double& minumum, double& maximum, double& def)
{
	const char* t = type(prop) + 1;
	while (*t) if (*t == ' ') break; else t++;
	return sscanf(t, "%lg %lg %lg", &minumum, &maximum, &def);
}

int ParamInterface::getMinMax(int prop, int& minumum, int& maximum, SString& def)
{
	const char* t = type(prop) + 1;
	while (*t) if (*t == ' ') break; else t++;
	int ret = sscanf(t, "%d %d", &minumum, &maximum);
	def = SString::empty();
	if (ret == 2)
	{
		while (*t == ' ') t++;
		for (int skip_fields = 2; skip_fields > 0; skip_fields--)
		{
			while (*t) if (*t == ' ') break; else t++;
			while (*t == ' ') t++;
		}
		if (*t)
		{
			const char* end = strchr(t, '~');
			if (!end)
				end = t + strlen(t);
			while ((end > t) && (end[-1] == ' ')) end--;
			def = SString(t, end - t);
		}
		return 3;
	}
	else
		return ret;
}

void ParamInterface::setDefault()
{
	for (int i = 0; i < getPropCount(); i++)
		setDefault(i);
}

void ParamInterface::setMin()
{
	for (int i = 0; i < getPropCount(); i++)
		setMin(i);
}

void ParamInterface::setMax()
{
	for (int i = 0; i < getPropCount(); i++)
		setMax(i);
}

void ParamInterface::setDefault(int i)
{
	const char *t = type(i);
	switch (*t)
	{
	case 'f':
	{
		double mn = 0, mx = 0, def = 0;
		if (getMinMax(i, mn, mx, def) < 3) def = mn;
		setDouble(i, def);
	}
		break;
	case 'd':
	{
		paInt mn = 0, mx = 0, def = 0;
		if (getMinMax(i, mn, mx, def) < 3) def = mn;
		setInt(i, def);
	}
		break;
	case 's': case 'x':
	{
		int mn, mx; SString def;
		getMinMax(i, mn, mx, def);
		if (*t == 's')
			setString(i, def);
		else
		{
			if (def.len() > 0) setExtValue(i, ExtValue(def)); else setExtValue(i, ExtValue::empty());
		}
	}
		break;
	case 'o':
		setObject(i, ExtObject::empty());
		break;
	}
}

void ParamInterface::setMin(int i)
{
	const char *t = type(i);
	switch (*t)
	{
	case 'f':
	{
		double mn = 0, mx = 0, def = 0;
		getMinMax(i, mn, mx, def);
		setDouble(i, mn);
	}
		break;
	case 'd':
	{
		paInt mn = 0, mx = 0, def = 0;
		getMinMax(i, mn, mx, def);
		setInt(i, mn);
	}
		break;
	default: set(i, "");
	}
}

void ParamInterface::setMax(int i)
{
	const char *t = type(i);
	switch (*t)
	{
	case 'f':
	{
		double mn = 0, mx = 0, def = 0;
		getMinMax(i, mn, mx, def);
		setDouble(i, mx);
	}
		break;
	case 'd':
	{
		paInt mn = 0, mx = 0, def = 0;
		getMinMax(i, mn, mx, def);
		setInt(i, mx);
	}
		break;
	default: set(i, "");
	}
}

SString ParamInterface::getStringById(const char*prop)
{
	int i = findId(prop); if (i >= 0) return getString(i); else return SString();
}
paInt ParamInterface::getIntById(const char*prop)
{
	int i = findId(prop); if (i >= 0) return getInt(i); else return 0;
}
double ParamInterface::getDoubleById(const char*prop)
{
	int i = findId(prop); if (i >= 0) return getDouble(i); else return 0;
}
ExtObject ParamInterface::getObjectById(const char*prop)
{
	int i = findId(prop); if (i >= 0) return getObject(i); else return ExtObject();
}
ExtValue ParamInterface::getExtValueById(const char*prop)
{
	int i = findId(prop); if (i >= 0) return getExtValue(i); else return ExtValue();
}

int ParamInterface::setIntById(const char* prop, paInt v)
{
	int i = findId(prop); if (i >= 0) return setInt(i, v); else return PSET_NOPROPERTY;
}
int ParamInterface::setDoubleById(const char* prop, double v)
{
	int i = findId(prop); if (i >= 0) return setDouble(i, v); else return PSET_NOPROPERTY;
}
int ParamInterface::setStringById(const char* prop, const SString &v)
{
	int i = findId(prop); if (i >= 0) return setString(i, v); else return PSET_NOPROPERTY;
}
int ParamInterface::setObjectById(const char* prop, const ExtObject &v)
{
	int i = findId(prop); if (i >= 0) return setObject(i, v); else return PSET_NOPROPERTY;
}
int ParamInterface::setExtValueById(const char* prop, const ExtValue &v)
{
	int i = findId(prop); if (i >= 0) return setExtValue(i, v); else return PSET_NOPROPERTY;
}
int ParamInterface::setById(const char* prop, const ExtValue &v)
{
	int i = findId(prop); if (i >= 0) return set(i, v); else return PSET_NOPROPERTY;
}

int ParamInterface::save(VirtFILE* f, const char* altname, bool force)
{
	const char *p;
	SString ws;
	int err = 0, i;
	bool withname = false;
	if ((altname == NULL) || (altname[0] != 0))
	{
		err |= (fputs(altname ? altname : getName(), f) == EOF);
		err |= (fputs(":\n", f) == EOF);
		withname = true;
	}
	for (i = 0; p = id(i); i++)
		err |= saveprop(f, i, p, force);
	if (withname)
		err |= (fputs("\n", f) == EOF);
	return err;
}

const char* ParamInterface::SERIALIZATION_PREFIX = "@Serialized:";

int ParamInterface::saveprop(VirtFILE* f, int i, const char* p, bool force)
{
	if ((flags(i)&PARAM_DONTSAVE) && (!force)) return 0;
	const char *typ = type(i);
	if (*typ == 'p') return 0;

	const char *t, *w;
	SString ws;
	int err = 0, cr;

	err |= (fputs(p, f) == EOF); fputc(':', f);
	cr = 0;
	if ((*typ == 'x') || (*typ == 'o'))
	{
		ExtValue ex;
		get(i, ex);
		ws = SString(SERIALIZATION_PREFIX) + ex.serialize();
	}
	else
		ws = get(i);
	quoteTilde(ws);
	w = ws.c_str();
	if (ws.len() > 50) cr = 1;
	else for (t = w; *t; t++) if ((*t == 10) || (*t == 13)) { cr = 1; break; }
	if (cr) fputs("~\n", f);
	err |= (fputs(w, f) == EOF);
	err |= (fputs(cr ? "~\n" : "\n", f) == EOF);
	return err;
}


int SimpleAbstractParam::isequal(int i, void* defdata)
{ // defdata->member == object->member ?
	void *backup = object;
	switch (type(i)[0])
	{
	case 'd':
	{
		select(defdata);
		paInt x = getInt(i);
		select(backup);
		return x == getInt(i);
	}
	case 'f':
	{
		select(defdata);
		double x = getDouble(i);
		select(backup);
		return x == getDouble(i);
	}
	case 's':
	{
		select(defdata);
		SString x = getString(i);
		select(backup);
		return x == getString(i);
	}
	}
	return 1;
}

void SimpleAbstractParam::save2(SString& f, void *defdata, bool addcr, bool all_names)
{ // defdata!=NULL -> does not save default values
	const char *p;
	int i;
	int needlabel = 0;
	int first = 1;
	SString val;
	SString t;
	int fl;
	// t+=SString(getName()); t+=':';
	for (i = 0; p = id(i); i++)
		if (!((fl = flags(i))&PARAM_DONTSAVE))
		{
		if (defdata && isequal(i, defdata))
			needlabel = 1;
		else
		{
			if (!first) t += ", ";
#ifndef SAVE_ALL_NAMES
#ifdef SAVE_SELECTED_NAMES
			if (needlabel || all_names || !(fl & PARAM_CANOMITNAME))
#else
			if (needlabel)
#endif
#endif
			{
				t += p; t += "="; needlabel = 0;
			}
			if (type(i)[0] == 's')
			{ // string - special case
				SString str = getString(i);
				if (strContainsOneOf(str.c_str(), ", \\\n\r\t\""))
				{
					t += "\"";
					sstringQuote(str);
					t += str;
					t += "\"";
				}
				else
					t += str;
			}
			else
				t += get(i);
			first = 0;
		}
		}
	if (addcr)
		t += "\n";
	f += t;
}

int ParamInterface::load(VirtFILE* f, bool warn_unknown_fields, bool *abortable, int *linenum)
{
	SString buf;
	int i;
	const char *p, *p0;
	int p_len;
	bool loaded;
	int fields_loaded = 0;
	while (((!abortable) || (!*abortable)) && loadSStringLine(f, buf))
	{
		if (linenum) (*linenum)++;
		const char* t = buf.c_str();
		p0 = t; while ((*p0 == ' ') || (*p0 == '\t')) p0++;
		if (!*p0) break;
		if (p0[0] == '#') continue;
		p = strchr(p0, ':'); if (!p) continue;
		p_len = (int)(p - p0);
		loaded = false;
		if (p_len && ((i = findIdn(p0, p_len)) >= 0))
		{
			if (!(flags(i)&PARAM_DONTLOAD))
			{
				if (p0[p_len + 1] == '~')
				{
					SString s;
					czytdotyldy(f, s);
					int lfcount = 1;
					const char* tmp = s.c_str();
					while (tmp)
						if ((tmp = strchr(tmp, '\n')))
						{
						lfcount++; tmp++;
						}
					removeCR(s);
					int ch; while ((ch = fgetc(f)) != EOF) if (ch == '\n') break;
					unquoteTilde(s);
					if (linenum && (flags(i)&PARAM_LINECOMMENT))
						s = SString::sprintf("@file %s\n@line %d\n", f->VgetPath(), *linenum + 1) + s;
					set(i, s.c_str());
					if (linenum)
						(*linenum) += lfcount;
				}
				else
				{
					set(i, p0 + p_len + 1);
				}
				fields_loaded++;
				loaded = true;
			}
		}
		else if (warn_unknown_fields)
		{
			SString name(p0, p_len);
			Hprintf("ParamInterface", "load", HMLV_WARN, "Ignored unknown property '%s' while reading object '%s'", name.c_str(), getName());
		}

		if ((!loaded) && (p0[p_len + 1] == '~'))
		{ // eat unrecognized multiline field
			SString s;
			czytdotyldy(f, s);
			if (linenum)
			{
				const char* tmp = s.c_str();
				int lfcount = 1;
				while (tmp)
					if ((tmp = strchr(tmp, '\n')))
					{
					lfcount++; tmp++;
					}
				(*linenum) += lfcount;
			}
			int ch; while ((ch = fgetc(f)) != EOF) if (ch == '\n') break;
		}
	}
	return fields_loaded;
}


/*
SString SimpleAbstractParam::getString(int i)
{
char *t;
switch (*(t=type(i)))
{
case 'd':
{
for (i=atol(get(i));i>=0;i--) if (t) t=strchr(t+1,'~');
if (t)
{
t++;
char *t2=strchr(t,'~');
if (!t2) t2=t+strlen(t);
SString str;
strncpy(str.directWrite(t2-t),t,t2-t);
str.endWrite(t2-t);
return str;
}
}
}
return get(i);
}
*/

int ParamInterface::findId(const char* n)
{
	int i; const char *p;
	for (i = 0; p = id(i); i++) if (!strcmp(n, p)) return i;
	return -1;
}

int ParamInterface::findIdn(const char* naz, int n)
{
	int i; const char *p;
	for (i = 0; p = id(i); i++) if ((!strncmp(naz, p, n)) && (!p[n])) return i;
	return -1;
}

void ParamInterface::get(int i, ExtValue &ret)
{
	switch (type(i)[0])
	{
	case 'd':	ret.setInt(getInt(i)); break;
	case 'f':	ret.setDouble(getDouble(i)); break;
	case 's':	ret.setString(getString(i)); break;
	case 'o':	ret.setObject(getObject(i)); break;
	case 'x':	ret = getExtValue(i); break;
	default: Hprintf("ParamInterface", "get", HMLV_ERROR, "'%s.%s' is not a field", getName(), id(i));
	}
}

int ParamInterface::setInt(int i, const char* str)
{
	paInt value;
	if (!ExtValue::parseInt(str, value, false, true))
	{
		paInt mn, mx, def;
		if (getMinMax(i, mn, mx, def) >= 3)
			return setInt(i, def);
		else
			return setInt(i, (paInt)0);
	}
	else
		return setInt(i, value);
}

int ParamInterface::setDouble(int i, const char* str)
{
	double value;
	if (!ExtValue::parseDouble(str, value, true))
	{
		double mn, mx, def;
		if (getMinMax(i, mn, mx, def) >= 3)
			return setDouble(i, def);
		else
			return setDouble(i, (double)0);
	}
	else
		return setDouble(i, value);
}

int ParamInterface::set(int i, const ExtValue &v)
{
	switch (type(i)[0])
	{
	case 'd':
		if ((v.type == TInt) || (v.type == TDouble)) return setInt(i, v.getInt());
		else
		{
			if (v.type == TObj)
			{
				Hprintf("ParamInterface", "set", HMLV_WARN, "Getting integer value from object reference (%s)", v.getString().c_str());
				return 0;
			}
			else
				return setInt(i, v.getString().c_str());
		}
	case 'f':
		if ((v.type == TInt) || (v.type == TDouble)) return setDouble(i, v.getDouble());
		else
		{
			if (v.type == TObj)
			{
				Hprintf("ParamInterface", "set", HMLV_WARN, "Getting floating point value from object reference (%s)", v.getString().c_str());
				return 0;
			}
			else
				return setDouble(i, v.getString().c_str());
		}
	case 's': { SString t = v.getString(); return setString(i, t); }
	case 'o': return setObject(i, v.getObject());
	case 'x': return setExtValue(i, v);
	default: Hprintf("ParamInterface", "set", HMLV_ERROR, "'%s.%s' is not a field", getName(), id(i));
	}
	return 0;
}

int ParamInterface::set(int i, const char *v)
{
	char typ = type(i)[0];
	switch (typ)
	{
	case 'd': return setInt(i, v);
	case 'f': return setDouble(i, v);
	case 's': { SString t(v); return setString(i, t); }
	case 'x': case 'o':
	{
		ExtValue e;
		const char* after;
		if (!strncmp(v, SERIALIZATION_PREFIX, strlen(SERIALIZATION_PREFIX)))
		{
			after = e.deserialize(v + strlen(SERIALIZATION_PREFIX));
			if ((after == NULL) || (*after))
			{
				Hprintf("ParamInterface", "set", HMLV_WARN, "serialization format mismatch in %s.%s", (getName() ? getName() : "<Unknown>"), id(i));
				e.setEmpty();
			}
		}
		else if ((after = e.parseNumber(v)) && (*after == 0)) //consumed the whole string
		{
			//OK!
		}
		else
		{
			e.setString(SString(v));
		}
		if (typ == 'x')
			return setExtValue(i, e);
		else
			return setObject(i, e.getObject());
	}
	}
	return 0;
}

SString ParamInterface::getText(int i)
{
	const char *t;
	if ((*(t = type(i))) == 'd')
	{
		paInt mn, mx, def;
		int value = getInt(i);
		if (getMinMax(i, mn, mx, def) >= 2)
		{
			if (value > mx)
				return get(i);
			value -= mn;
		}
		if (value < 0) return get(i);
		for (; value >= 0; value--) if (t) t = strchr(t + 1, '~');
		if (t)
		{
			t++;
			const char *t2 = strchr(t, '~');
			if (!t2) t2 = t + strlen(t);
			return SString(t, (int)(t2 - t));
		}
	}
	return get(i);
}

SString ParamInterface::get(int i)
{
	switch (type(i)[0])
	{
	case 'd': return SString::valueOf(getInt(i));
	case 'f': return SString::valueOf(getDouble(i));
	case 's': return getString(i);
	}
	ExtValue v;
	get(i, v);
	return v.getString();
}


//////////////////////////////// PARAM ////////////////////////////////////

#ifdef DEBUG
void SimpleAbstractParam::sanityCheck(int i)
{
	ParamEntry *pe=entry(i);

	const char* t=pe->type;
	const char* err=NULL;

	if (*t=='p')
	{
		if (pe->fun1==NULL)
			err="no procedure defined";
	}
	else
	{
		if (!(pe->flags & PARAM_READONLY))
		{ //write access
			if ((pe->fun2==NULL)&&(pe->offset==PARAM_ILLEGAL_OFFSET))
				err="no field defined (GETONLY without PARAM_READONLY?)";
		}
	}
	if (err!=NULL)
		Hprintf("SimpleAbstractParam","sanityCheck", HMLV_ERROR,
		"Invalid ParamEntry for %s.%s (%s)", getName(), pe->id, err);
}	
#endif

void *SimpleAbstractParam::getTarget(int i)
{
	return (void*)(((char*)object) + entry(i)->offset);
	//return &(object->*(entry(i)->fldptr));
}

///////// get

#ifdef DEBUG
#define SANITY_CHECK(i) sanityCheck(i)
#else
#define SANITY_CHECK(i) 
#endif

paInt SimpleAbstractParam::getInt(int i)
{
	SANITY_CHECK(i);
	ExtValue v;
	ParamEntry *pe = entry(i);
	if (pe->fun1)
	{
		(*(void(*)(void*, ExtValue*))pe->fun1)(object, &v);
		return v.getInt();
	}
	else
	{
		void *target = getTarget(i);
		return *((paInt*)target);
	}
}

double SimpleAbstractParam::getDouble(int i)
{
	SANITY_CHECK(i);
	ExtValue v;
	ParamEntry *pe = entry(i);
	if (pe->fun1)
	{
		(*(void(*)(void*, ExtValue*))pe->fun1)(object, &v);
		return v.getDouble();
	}
	else
	{
		void *target = getTarget(i);
		return *((double*)target);
	}
}

SString SimpleAbstractParam::getString(int i)
{
	SANITY_CHECK(i);
	ExtValue v;
	ParamEntry *pe = entry(i);
	if (pe->fun1)
	{
		(*(void(*)(void*, ExtValue*))pe->fun1)(object, &v);
		return v.getString();
	}
	else
	{
		void *target = getTarget(i);
		return *((SString*)target);
	}
}

ExtObject SimpleAbstractParam::getObject(int i)
{
	SANITY_CHECK(i);
	ExtValue v;
	ParamEntry *pe = entry(i);
	if (pe->fun1)
	{
		(*(void(*)(void*, ExtValue*))pe->fun1)(object, &v);
		return v.getObject();
	}
	else
	{
		void *target = getTarget(i);
		return *((ExtObject*)target);
	}
}

ExtValue SimpleAbstractParam::getExtValue(int i)
{
	SANITY_CHECK(i);
	ExtValue v;
	ParamEntry *pe = entry(i);
	if (pe->fun1)
	{
		(*(void(*)(void*, ExtValue*))pe->fun1)(object, &v);
		return v;
	}
	else
	{
		void *target = getTarget(i);
		return *((ExtValue*)target);
	}
}


//////// set

int SimpleAbstractParam::setInt(int i, paInt x)
{
	SANITY_CHECK(i);
	ExtValue v;
	ParamEntry *pe = entry(i);
	if (pe->flags&PARAM_READONLY) return PSET_RONLY;
	paInt xcopy = x; //only needed for messageOnExceedRange(): retain original, requested value of x because it may be changed below
	paInt mn = 0, mx = 0;
	int result = 0;
	const char* t = pe->type + 1;
	while (*t) if (*t == ' ') break; else t++;
	if (sscanf(t, PA_INT_SCANF " " PA_INT_SCANF, &mn, &mx) == 2)
		if (mn <= mx) // else if mn>mx then the min/max constraint makes no sense and there is no checking
		{
		if (x < mn) { x = mn; result = PSET_HITMIN; }
		else if (x > mx) { x = mx; result = PSET_HITMAX; }
		}

	if (pe->fun2)
	{
		v.setInt(x);
		result |= (*(int(*)(void*, const ExtValue*))pe->fun2)(object, &v);
	}
	else
	{
		void *target = getTarget(i);
		if (dontcheckchanges || (*((paInt*)target) != x))
		{
			result |= PSET_CHANGED;
			*((paInt*)target) = x;
		}
	}
	messageOnExceedRange(i, result, xcopy);
	return result;
}

int SimpleAbstractParam::setDouble(int i, double x)
{
	SANITY_CHECK(i);
	ExtValue v;
	ParamEntry *pe = entry(i);
	if (pe->flags&PARAM_READONLY) return PSET_RONLY;
	double xcopy = x; //only needed for messageOnExceedRange(): retain original, requested value of x because it may be changed below
	double mn = 0, mx = 0;
	int result = 0;
	const char* t = pe->type + 1;
	while (*t) if (*t == ' ') break; else t++;
	if (sscanf(t, "%lg %lg", &mn, &mx) == 2)
		if (mn <= mx) // else if mn>mx then the min/max constraint makes no sense and there is no checking
		{
		if (x < mn) { x = mn; result = PSET_HITMIN; }
		else if (x > mx) { x = mx; result = PSET_HITMAX; }
		}

	if (pe->fun2)
	{
		v.setDouble(x);
		result |= (*(int(*)(void*, const ExtValue*))pe->fun2)(object, &v);
	}
	else
	{
		void *target = getTarget(i);
		if (dontcheckchanges || (*((double*)target) != x))
		{
			result |= PSET_CHANGED;
			*((double*)target) = x;
		}
	}
	messageOnExceedRange(i, result, xcopy);
	return result;
}

int SimpleAbstractParam::setString(int i, const SString& x)
{
	SANITY_CHECK(i);
	ExtValue v;
	SString vs;
	const SString *xx = &x;
	ParamEntry *pe = entry(i);
	if (pe->flags&PARAM_READONLY) return PSET_RONLY;
	SString xcopy = x; //only needed for messageOnExceedRange(): retain original, requested value of x because it may be changed below
	const char* t = pe->type + 1;
	while (*t) if (*t == ' ') break; else t++;
	int mn = 0, mx = 0;
	int result = 0;
	if (sscanf(t, "%d %d", &mn, &mx) == 2) //using getMinMax would also get default value, which is not needed here
	{
		if ((x.len() > mx) && (mx > 0))
		{
			vs = x.substr(0, mx);
			xx = &vs;
			result |= PSET_HITMAX;
		}
	}

	if (pe->fun2)
	{
		v.setString(*xx);
		result |= (*(int(*)(void*, const ExtValue*))pe->fun2)(object, &v);
	}
	else
	{
		void *target = getTarget(i);
		if (dontcheckchanges || (!(*((SString*)target) == *xx)))
		{
			result |= PSET_CHANGED;
			*((SString*)target) = *xx;
		}
	}
	messageOnExceedRange(i, result, xcopy);
	return result;
}

int SimpleAbstractParam::setObject(int i, const ExtObject& x)
{
	SANITY_CHECK(i);
	ExtValue v;
	ParamEntry *pe = entry(i);
	if (pe->flags&PARAM_READONLY) return PSET_RONLY;
	ExtObject xcopy = x; //only needed for messageOnExceedRange(): retain original, requested value of x because it may be changed below
	if (pe->fun2)
	{
		v.setObject(x);
		int result = (*(int(*)(void*, const ExtValue*))pe->fun2)(object, &v);
		messageOnExceedRange(i, result, xcopy);
		return result;
	}
	else
	{
		void *target = getTarget(i);
		*((ExtObject*)target) = x;
		return PSET_CHANGED;
	}
}

int SimpleAbstractParam::setExtValue(int i, const ExtValue& x)
{
	SANITY_CHECK(i);
	ParamEntry *pe = entry(i);
	if (pe->flags&PARAM_READONLY) return PSET_RONLY;
	ExtValue xcopy = x; //only needed for messageOnExceedRange(): retain original, requested value of x because it may be changed below
	if (pe->fun2)
	{
		int result = (*(int(*)(void*, const ExtValue*))pe->fun2)(object, &x);
		messageOnExceedRange(i, result, xcopy);
		return result;
	}
	else
	{
		void *target = getTarget(i);
		*((ExtValue*)target) = x;
		return PSET_CHANGED;
	}
}

void SimpleAbstractParam::call(int i, ExtValue *args, ExtValue *ret)
{
	SANITY_CHECK(i);
	ParamEntry *pe = entry(i);
	if (!pe) return;
	if (pe->fun1 && (pe->type[0] == 'p'))
		(*(void(*)(void*, ExtValue*, ExtValue*))pe->fun1)(object, args, ret);
	else
	{
		Hprintf("SimpleAbstractParam", "call", HMLV_ERROR,
			(*pe->type != 'p') ? "'%s.%s' is not a function" : "Internal error - undefined function pointer for '%s.%s'", getName(), pe->id);
		ret->setInvalid();
	}
}

void SimpleAbstractParam::setDefault()
{
	bool save = dontcheckchanges;
	dontcheckchanges = 1;
	ParamInterface::setDefault();
	dontcheckchanges = save;
}

void SimpleAbstractParam::setDefault(int i)
{
	bool save = dontcheckchanges;
	dontcheckchanges = 1;
	ParamInterface::setDefault(i);
	dontcheckchanges = save;
}

// Returns the address of the beginning of the line.
// len = line length (without \n).
// 0 may mean the line with length=0 or the end of the SString.
// poz is advanced to the beginning of the next line.
// A typical loop: for(poz=0;poz<s.d;) {line=getline(s,poz,len);...
static const char *getline(const SString &s, int &poz, int &len)
{
	const char *beg = s.c_str() + poz;
	if (poz >= s.len()) { poz = s.len(); len = 0; return s.c_str() + s.len(); }
	const char *lf = strchr(beg, '\n');
	if (!lf) { lf = s.c_str() + s.len() - 1; poz = s.len(); }
	else { poz = (int)(lf - s.c_str()) + 1; if (poz > s.len()) poz = s.len(); }
	while (lf >= beg) if ((*lf == '\n') || (*lf == '\r')) lf--; else break;
	len = (int)(lf - beg) + 1;
	return beg;
}

int ParamInterface::load2(const SString &s, int &poz)
{
	int i; // the index number of the parameter
	int tmpi;
	int len;
	int ret;
	int fields_loaded = 0;
	const char *t, *lin, *end;
	const char *equals_sign, *field_end, *next_field;
	char remember;
	const char *quote, *quote2;
	const char *value, *valstop;
	SString tmpvalue;
	if (poz >= s.len()) return fields_loaded;
	t = s.c_str() + poz;

	lin = getline(s, poz, len); // all fields must be encoded in a single line
	if (!len) return fields_loaded; // empty line = end
	i = 0;
	end = lin + len;
	while (t < end)
	{
		// processing a single field
		// "p:name=field_value,  field_name=field_value  , name=value..."
		//                     ^ ^-t (after)           ^ ^_next_field
		//                     \_t (before)            \_field_end
		while (isspace(*t)) if (t < end) t++; else return fields_loaded;

		field_end = strchrlimit(t, ',', end); if (!field_end) field_end = end;
		next_field = field_end;
		while ((field_end>t) && isblank(field_end[-1])) field_end--;
		quote = strchrlimit(t, '\"', field_end);
		if (quote)
		{
			quote2 = skipQuoteString(quote + 1, end);
			if (quote2 > field_end)
			{
				field_end = strchrlimit(quote2 + 1, ',', end);
				if (!field_end) next_field = field_end = end;
			}
			equals_sign = strchrlimit(t, '=', quote);
		}
		else
		{
			equals_sign = strchrlimit(t, '=', field_end);
			quote2 = 0;
		}
		if (equals_sign == t) { t++; equals_sign = 0; }
		if (field_end == t)	// skip empty value
		{
			t++; i++;
			continue;
		}
		if (equals_sign) // have parameter name
		{
			tmpi = findIdn(t, (int)(equals_sign - t));
			i = tmpi;
			if (tmpi < 0)
			{
				SString name(t, (int)(equals_sign - t));
				Hprintf("Param", "load2", HMLV_WARN, "Unknown property '%s' while reading object '%s' (ignored)", name.c_str(), getName());
			}
			t = equals_sign + 1; // t=value
		}
#ifdef WARN_MISSING_NAME
		else
#ifdef SAVE_SELECTED_NAMES
			if (!(flags(i)&PARAM_CANOMITNAME))
#endif
			{
			Hprintf("Param", "load2", HMLV_WARN, "Missing property name in '%s' (assuming '%s')",
				getName(), id(i) ? id(i) : "unknown property?");
			}
#endif
		if ((i >= 0) && id(i))
		{
			value = t;
			if (quote)
			{
				tmpvalue.copyFrom(quote + 1, (int)(quote2 - quote) - 1);
				sstringUnquote(tmpvalue);
				value = tmpvalue.c_str();
				valstop = quote2;
			}
			else
				if (field_end < end) valstop = field_end; else valstop = end;

			remember = *valstop;
			*(char*)valstop = 0;
			ret = set(i, value);
			fields_loaded++;
			if (ret&(PSET_HITMAX | PSET_HITMIN))
				Hprintf("Param", "load2", HMLV_WARN, "Adjusted '%s' in '%s' (was too %s)",
				id(i), getName(), (ret&PSET_HITMAX) ? "big" : "small");
			*(char*)valstop = remember;
		}

		if (i >= 0) i++;
#ifdef __CODEGUARD__ 
		if (next_field<end-1) t=next_field+1; else return fields_loaded;
#else
		t = next_field + 1;
#endif
	}
	return fields_loaded;
}

int Param::grmember(int g, int a)
{
	if ((getGroupCount() < 2) && (!g))
		return (a < getPropCount()) ? a : -9999;

	ParamEntry *e = entry(0);
	int x = 0, i = 0;
	for (; e->id; i++, e++)
	{
		if (e->group == g)
			if (a == x) return i; else x++;
	}
	return -9999;
}