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/*
* object for generating SQL queries with SQL ? placeholders
* Written by Hans-Christoph Steiner <hans@eds.org>
*
* Copyright (c) 2007 Free Software Foundation
*
* 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 3
* of the License, or (at your option) any later version.
*
* See file LICENSE for further information on licensing terms.
*
* 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, write to the Free Software Foundation,
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*/
#include <m_pd.h>
#ifdef _WIN32
#define _WIN32_WINNT 0x0400
#include <windows.h>
#include <stdio.h>
#else
#include <stdlib.h>
#endif
#include <string.h>
#define DEBUG(x)
//#define DEBUG(x) x
#define PLACEHOLDER '?'
/*------------------------------------------------------------------------------
* CLASS DEF
*/
static t_class *sql_query_class;
static t_class *proxy_inlet_class;
typedef struct _proxy_inlet
{
t_pd pd;
void *owner;
unsigned int id;
} t_proxy_inlet;
typedef struct _sql_query
{
t_object x_obj;
t_binbuf* x_query_binbuf; // binbuf for converting args to string
t_proxy_inlet* inlets; // pointer to array of _proxy_inlets
t_atom* atoms; // pointer to array of atoms
unsigned int placeholder_count;// number of items in above arrays
t_outlet* x_data_outlet; // for list of data to plug into query
t_outlet* x_query_outlet; // for SQL query
} t_sql_query;
/*------------------------------------------------------------------------------
* FUNCTION PROTOTYPES
*/
static void sql_query_set_atom(t_sql_query *x, int atom_num, t_symbol *s,
int argc, t_atom *a);
/*------------------------------------------------------------------------------
* PROXY INLET FUNCTIONS
*/
static void proxy_inlet_new(t_proxy_inlet *p, t_object *owner, unsigned int id)
{
DEBUG(post("proxy_inlet_new"););
p->pd = proxy_inlet_class;
p->owner = owner;
p->id = id;
inlet_new(owner, &p->pd, 0, 0);
}
static void proxy_inlet_anything(t_proxy_inlet *p, t_symbol *s, int argc, t_atom *argv)
{
DEBUG(post("proxy_inlet_anything"););
sql_query_set_atom(p->owner, p->id, s, argc, argv);
}
static void proxy_inlet_setup(void)
{
post("proxy_inlet_setup");
proxy_inlet_class = (t_class *)class_new(gensym("#__PROXY_INLET__"),
0,
0,
sizeof(t_proxy_inlet),
0,
A_GIMME,
0);
class_addanything(proxy_inlet_class, (t_method)proxy_inlet_anything);
}
/*------------------------------------------------------------------------------
* STANDARD CLASS FUNCTIONS
*/
static void sql_query_set_atom(t_sql_query *x, int atom_num, t_symbol *s,
int argc, t_atom *a)
{
DEBUG(post("sql_query_set_atom"););
if( (s == &s_symbol) || (s == &s_list) || (s == &s_float) )
x->atoms[atom_num] = *a;
else
SETSYMBOL(&x->atoms[atom_num], s);
}
static void sql_query_output(t_sql_query *x)
{
DEBUG(post("sql_query_output"););
int natom = binbuf_getnatom(x->x_query_binbuf);
t_atom *vec = binbuf_getvec(x->x_query_binbuf);
outlet_anything(x->x_query_outlet, vec[0].a_w.w_symbol, natom - 1, vec + 1);
outlet_list(x->x_data_outlet, &s_list, x->placeholder_count, x->atoms);
}
static void sql_query_anything(t_sql_query *x, t_symbol *s, int argc, t_atom *argv)
{
sql_query_set_atom(x, 0, s, argc, argv);
sql_query_output(x);
}
static void sql_query_free(t_sql_query *x)
{
binbuf_free(x->x_query_binbuf);
}
static void *sql_query_new(t_symbol *s, int argc, t_atom *argv)
{
DEBUG(post("sql_query_new"););
unsigned int i;
int bufsize;
char *buf;
char *current = NULL;
t_sql_query *x = (t_sql_query *)pd_new(sql_query_class);
x->x_query_binbuf = binbuf_new();
binbuf_add(x->x_query_binbuf, argc, argv);
binbuf_gettext(x->x_query_binbuf, &buf, &bufsize);
buf[bufsize] = 0;
x->placeholder_count = 0;
current = strchr(buf, PLACEHOLDER);
while (current != NULL)
{
x->placeholder_count++;
current = strchr(current + 1, PLACEHOLDER);
}
x->inlets = getbytes(x->placeholder_count * sizeof(t_proxy_inlet));
for(i = 1; i < x->placeholder_count; ++i)
proxy_inlet_new(&x->inlets[i], (t_object *)x, i);
x->atoms = getbytes(x->placeholder_count * sizeof(t_atom));
for(i = 0; i < x->placeholder_count; ++i)
SETSYMBOL(&x->atoms[i], &s_);
x->x_data_outlet = outlet_new(&x->x_obj, 0);
x->x_query_outlet = outlet_new(&x->x_obj, 0);
return (x);
}
void sql_query_setup(void)
{
sql_query_class = class_new(gensym("sql_query"),
(t_newmethod)sql_query_new,
(t_method)sql_query_free,
sizeof(t_sql_query),
0,
A_GIMME,
0);
/* add inlet datatype methods */
class_addbang(sql_query_class, (t_method) sql_query_output);
class_addanything(sql_query_class, (t_method) sql_query_anything);
/* set up proxy inlet class */
proxy_inlet_setup();
}
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