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/*
flext - C++ layer for Max/MSP and pd (pure data) externals
Copyright (c) 2001,2002 Thomas Grill (xovo@gmx.net)
For information on usage and redistribution, and for a DISCLAIMER OF ALL
WARRANTIES, see the file, "license.txt," in this distribution.
*/
/*! \file flattr.cpp
\brief Attribute handling for the flext base class
*/
#include "flext.h"
#include <string.h>
#ifdef __MWERKS__
#define STD std
#else
#define STD
#endif
flext_base::attritem::attritem(const t_symbol *t,const t_symbol *gt,metharg tp,methfun gf,methfun sf):
tag(t),gtag(gt),argtp(tp),gfun(gf),sfun(sf),nxt(NULL)
{}
flext_base::attritem::~attritem()
{
if(nxt) delete nxt;
}
void flext_base::AddAttrItem(attritem *m)
{
if(attrhead) {
attritem *mi;
for(mi = attrhead; mi->nxt; mi = mi->nxt) {}
mi->nxt = m;
}
else
attrhead = m;
attrcnt++;
}
void flext_base::AddAttrib(const char *attr,metharg tp,methfun gfun,methfun sfun)
{
if(procattr) {
char tmp[256] = "get";
strcpy(tmp+3,attr);
AddAttrItem(new attritem(MakeSymbol(attr),MakeSymbol(tmp),tp,gfun,sfun));
AddMethod(0,attr,(methfun)cb_SetAttrib,a_any,a_null);
AddMethod(0,tmp,(methfun)cb_GetAttrib,a_any,a_null);
}
else
error("%s - attribute procession is not enabled!",thisName());
}
int flext_base::CheckAttrib(int argc,const t_atom *argv)
{
int offs = 0;
for(; offs < argc; ++offs)
if(IsString(argv[offs]) && *GetString(argv[offs]) == '@') break;
return offs;
}
bool flext_base::InitAttrib(int argc,const t_atom *argv)
{
int cur,nxt;
for(cur = 0; cur < argc; cur = nxt) {
// find next @symbol
for(nxt = cur+1; nxt < argc; ++nxt)
if(IsString(argv[nxt]) && *GetString(argv[nxt]) == '@') break;
const t_symbol *tag = MakeSymbol(GetString(argv[cur])+1);
SetAttrib(tag,nxt-cur-1,argv+cur+1);
}
return true;
}
bool flext_base::ListAttrib()
{
if(outattr) {
AtomList la(attrcnt);
attritem *a = attrhead;
for(int i = 0; i < attrcnt; ++i,a = a->nxt) SetSymbol(la[i],a->tag);
ToOutAnything(outattr,MakeSymbol("attributes"),la.Count(),la.Atoms());
return true;
}
else
return false;
}
bool flext_base::SetAttrib(const t_symbol *tag,int argc,const t_atom *argv)
{
attritem *a = attrhead;
for(; a && a->tag != tag; a = a->nxt) {}
if(a) {
if(a->sfun) {
bool ok = true;
AtomList la;
t_any any;
switch(a->argtp) {
case a_float:
if(argc == 1 && CanbeFloat(argv[0])) {
any.ft = GetAFloat(argv[0]);
((methfun_1)a->sfun)(this,any);
}
else ok = false;
break;
case a_int:
if(argc == 1 && CanbeInt(argv[0])) {
any.it = GetAInt(argv[0]);
((methfun_1)a->sfun)(this,any);
}
else ok = false;
break;
case a_symbol:
if(argc == 1 && IsSymbol(argv[0])) {
any.st = GetSymbol(argv[0]);
((methfun_1)a->sfun)(this,any);
}
else ok = false;
break;
case a_LIST:
any.vt = &(la(argc,argv));
((methfun_1)a->sfun)(this,any);
break;
default:
ERRINTERNAL();
}
if(!ok)
post("%s - wrong arguments for attribute %s",thisName(),GetString(tag));
}
else
post("%s - attribute %s has no get method",thisName(),GetString(tag));
}
else
error("%s - %s: attribute not found",thisName(),GetString(tag));
return true;
}
bool flext_base::GetAttrib(const t_symbol *tag,int argc,const t_atom *argv)
{
if(argc)
post("%s - %s: arguments ignored",thisName(),GetString(tag));
attritem *a = attrhead;
for(; a && a->gtag != tag; a = a->nxt) {}
if(a) {
if(a->gfun) {
AtomList la;
t_any any;
switch(a->argtp) {
case a_float: {
((methfun_1)a->gfun)(this,any);
la(1);
SetFloat(la[0],any.ft);
break;
}
case a_int: {
((methfun_1)a->gfun)(this,any);
la(1);
SetInt(la[0],any.it);
break;
}
case a_symbol: {
((methfun_1)a->gfun)(this,any);
la(1);
SetSymbol(la[0],any.st);
break;
}
case a_LIST: {
any.vt = &la;
((methfun_1)a->gfun)(this,any);
break;
}
default:
ERRINTERNAL();
}
ToOutAnything(outattr,a->tag,la.Count(),la.Atoms());
}
else
post("%s - attribute %s has no set method",thisName(),GetString(tag));
}
else
error("%s - %s: attribute not found",thisName(),GetString(tag));
return true;
}
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