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/******************************************************
*
* zexy - implementation file
*
* copyleft (c) IOhannes m zmölnig
*
* 1999:forum::für::umläute:2004
*
* institute of electronic music and acoustics (iem)
*
******************************************************
*
* license: GNU General Public License v.2
*
******************************************************/
#include "zexy.h"
#include <stdlib.h>
#include <string.h>
/*
* strcmp : compare 2 lists as if they were strings
*/
/* ------------------------- strcmp ------------------------------- */
/* compare 2 lists ( == for lists) */
static t_class *strcmp_class;
static t_class *strcmp_proxy_class;
typedef struct _strcmp
{
t_object x_obj;
struct _strcmp_proxy *x_proxy;
t_binbuf *bbuf1, *bbuf2;
char *str1, *str2;
int n1, n2;
} t_strcmp;
typedef struct _strcmp_proxy
{
t_pd p_pd;
t_strcmp *p_master;
t_inlet *p_in;
} t_strcmp_proxy;
static void strcmp_bang(t_strcmp *x)
{
int result = 0;
if(x->str1){
if(x->str2)
result = strcmp(x->str1, x->str2);
else
result = *x->str1;
} else {
if(x->str2)
result = -*x->str2;
else
result = 0;
}
outlet_float(x->x_obj.ob_outlet, result);
}
static void list2binbuf(t_binbuf**bbuf, int *n, char**str, int argc, t_atom*argv)
{
int i=0;
char*s=0;
if(*str&&*n)freebytes(*str, *n);
binbuf_clear(*bbuf);
binbuf_add(*bbuf, argc, argv);
binbuf_gettext(*bbuf, str, n);
i=*n;
s=*str;
if(' '==s[i])s[i]=0;
}
static void strcmp_list(t_strcmp *x, t_symbol *s, int argc, t_atom *argv)
{
ZEXY_USEVAR(s);
list2binbuf(&x->bbuf1, &x->n1, &x->str1, argc, argv);
strcmp_bang(x);
}
static void strcmp_symbol(t_strcmp *x, t_symbol *s)
{
if(x->str1&&x->n1)freebytes(x->str1, x->n1);
x->n1=0;
x->str1=s->s_name;
strcmp_bang(x);
}
static void strcmp_secondlist(t_strcmp *x, t_symbol *s, int argc, t_atom *argv)
{
ZEXY_USEVAR(s);
list2binbuf(&x->bbuf2, &x->n2, &x->str2, argc, argv);
}
static void strcmp_secondsymbol(t_strcmp *x, t_symbol *s)
{
if(x->str2&&x->n2)freebytes(x->str2, x->n2);
x->n2=0;
x->str2=s->s_name;
}
static void strcmp_proxy_list(t_strcmp_proxy *y, t_symbol *s, int argc, t_atom *argv)
{
strcmp_secondlist(y->p_master, s, argc, argv);
}
static void strcmp_proxy_symbol(t_strcmp_proxy *y, t_symbol *s)
{
if(s)strcmp_secondsymbol(y->p_master, s);
}
static void *strcmp_new(t_symbol *s, int argc, t_atom *argv)
{
t_strcmp *x = (t_strcmp *)pd_new(strcmp_class);
ZEXY_USEVAR(s);
x->x_proxy=(t_strcmp_proxy*)pd_new(strcmp_proxy_class);
x->x_proxy->p_master = x;
x->x_proxy->p_in = inlet_new ((t_object*)x, (t_pd*)x->x_proxy, 0,0);
outlet_new(&x->x_obj, 0);
x->bbuf1 = binbuf_new();
x->bbuf2 = binbuf_new();
x->str1=0;
x->str2=0;
x->n1=0;
x->n2=0;
if(argc)strcmp_secondlist(x, gensym("list"), argc, argv);
return (x);
}
static void strcmp_free(t_strcmp *x)
{
binbuf_free(x->bbuf1);
binbuf_free(x->bbuf2);
if(x->str1&&x->n1)freebytes(x->str1, x->n1);
if(x->str2&&x->n2)freebytes(x->str2, x->n2);
inlet_free(x->x_proxy->p_in);
x->x_proxy->p_master=0;
pd_free(&x->x_proxy->p_pd);
}
void strcmp_setup(void)
{
strcmp_class = class_new(gensym("strcmp"), (t_newmethod)strcmp_new,
(t_method)strcmp_free, sizeof(t_strcmp), 0, A_GIMME, 0);
class_addbang (strcmp_class, strcmp_bang);
class_addsymbol (strcmp_class, strcmp_symbol);
class_addlist (strcmp_class, strcmp_list);
strcmp_proxy_class = class_new(gensym("strcmp proxy"), 0, 0,
sizeof(t_strcmp_proxy),
CLASS_PD | CLASS_NOINLET, 0);
class_addsymbol(strcmp_proxy_class, strcmp_proxy_symbol);
class_addlist(strcmp_proxy_class, strcmp_proxy_list);
class_sethelpsymbol(strcmp_class, gensym("zexy/strcmp"));
zexy_register("strcmp");
}
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