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/*
Copyright (C) 2002 Antoine Rousseau
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "m_pd.h"
#include "s_stuff.h"
#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>
#include <string.h>
#define BUFSIZE 4096
typedef struct popen
{
t_object x_obj;
FILE *x_file;
char x_data[BUFSIZE];
int x_count;
int x_ropened;
t_outlet *x_msgout;
} t_popen;
t_class *popen_class;
static t_binbuf *inbinbuf;
static void *popen_new(t_symbol *s, int argc, t_atom *argv)
{
t_popen *x;
x = (t_popen *)pd_new(popen_class);
x->x_file = NULL;
x->x_count=0;
x->x_msgout = outlet_new(&x->x_obj, &s_anything);
x->x_ropened=0;
return (x);
}
static void popen_close(t_popen *x)
{
if(x->x_ropened)
{
sys_rmpollfn(fileno(x->x_file));
//fflush(x->x_file);
}
if(x->x_file) pclose(x->x_file);
x->x_file=0;
x->x_ropened=0;
}
static void popen_ff(t_popen *x)
{
}
static void popen_open(t_popen *x, t_symbol *s,int argc, t_atom *argv)
{
char cmd[512],*text;
int cmd_len;
t_binbuf *bb=binbuf_new();
popen_close(x);
//post("argc=%d",argc);
//post("argv[0]=%s",atom_getsymbol(&argv[0])->s_name);
binbuf_add(bb,argc,argv);
binbuf_gettext(bb, &text,&cmd_len);
binbuf_free(bb);
strncpy(cmd,text,cmd_len);
cmd[cmd_len]=0;
//post("cmd=%s",cmd);
x->x_file=popen(cmd,"w");
}
static void popen_list(t_popen *x, t_symbol *s,
int argc, t_atom *argv)
{
t_binbuf *bb;
char *buf;
int l;
if(!x->x_file) return;
bb=binbuf_new();
binbuf_add(bb,argc,argv);
//binbuf_print(bb);
binbuf_gettext(bb, &buf,&l);
buf[l]=0;
//printf("popen list: %s\n",buf);
fprintf(x->x_file,"%s\n",buf);
fflush(x->x_file);
freebytes(buf,l);
binbuf_free(bb);
}
static void popen_out(t_popen *x, t_binbuf *b)
{
t_atom messbuf[1024];
int msg, natom = binbuf_getnatom(b);
t_atom *at = binbuf_getvec(b);
for (msg = 0; msg < natom;)
{
int emsg;
for (emsg = msg; emsg < natom && at[emsg].a_type != A_COMMA
&& at[emsg].a_type != A_SEMI; emsg++)
;
if (emsg > msg)
{
int i;
for (i = msg; i < emsg; i++)
if (at[i].a_type == A_DOLLAR || at[i].a_type == A_DOLLSYM)
{
pd_error(x, "popen: got dollar sign in message");
goto nodice;
}
if (at[msg].a_type == A_FLOAT)
{
if (emsg > msg + 1)
outlet_list(x->x_msgout, 0, emsg-msg, at + msg);
else outlet_float(x->x_msgout, at[msg].a_w.w_float);
}
else if (at[msg].a_type == A_SYMBOL)
outlet_anything(x->x_msgout, at[msg].a_w.w_symbol,
emsg-msg-1, at + msg + 1);
}
nodice:
msg = emsg + 1;
}
}
static void popen_read(t_popen *x,int fd)
{
int len,i=0;
unsigned char b;
unsigned char buffer[BUFSIZE];
if((len=read(fd,buffer,BUFSIZE))> 0)
{
for(i=0; i<len; i++)
{
if(x->x_count>=BUFSIZE) x->x_count=0;
x->x_data[x->x_count++]=buffer[i];
if(buffer[i]==';')
{
binbuf_text(inbinbuf, x->x_data, x->x_count);
x->x_count=0;
popen_out(x,inbinbuf);
}
}
}
}
static void popen_ropen(t_popen *x, t_symbol *s,int argc, t_atom *argv)
{
char cmd[512],*text;
int cmd_len;
t_binbuf *bb=binbuf_new();
popen_close(x);
//post("argc=%d",argc);
//post("argv[0]=%s",atom_getsymbol(&argv[0])->s_name);
binbuf_add(bb,argc,argv);
binbuf_gettext(bb, &text,&cmd_len);
binbuf_free(bb);
strncpy(cmd,text,cmd_len);
cmd[cmd_len]=0;
//post("cmd=%s",cmd);
x->x_file=popen(cmd,"r");
sys_addpollfn(fileno(x->x_file),(t_fdpollfn)popen_read,(void *)x);
x->x_ropened=1;
}
void popen_setup(void )
{
inbinbuf = binbuf_new();
popen_class = class_new(gensym("popen"), (t_newmethod)popen_new,
(t_method)popen_close,sizeof(t_popen), 0, A_GIMME, 0);
class_addmethod(popen_class, (t_method)popen_close,
gensym("close"), 0);
class_addmethod(popen_class, (t_method)popen_open,
gensym("open"), A_GIMME, 0);
class_addmethod(popen_class, (t_method)popen_ropen,
gensym("ropen"), A_GIMME, 0);
class_addlist(popen_class, popen_list);
}
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