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/*
* strcmp : compare 2 lists as if they were strings
*
* (c) 1999-2011 IOhannes m zmölnig, forum::für::umläute, institute of electronic music and acoustics (iem)
*
* This program 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; either version 2
* of the License, or (at your option) any later version.
*
* This program 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. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "zexy.h"
#include <stdlib.h>
#include <string.h>
/* ------------------------- 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* UNUSED(s), int argc,
t_atom *argv)
{
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* UNUSED(s), int argc,
t_atom *argv)
{
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* UNUSED(s), int argc, t_atom *argv)
{
t_strcmp *x = (t_strcmp *)pd_new(strcmp_class);
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);
}
static void strcmp_help(t_strcmp*x)
{
post("\n"HEARTSYMBOL" strcmp\t\t:: compare to lists as strings");
}
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_addmethod(strcmp_class, (t_method)strcmp_help, gensym("help"),
A_NULL);
zexy_register("strcmp");
}
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