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/*
* This object loads libraries and libdirs from within a patch. It is the
* first small step towards a patch-specific namespace. Currently, it just
* adds things to the global path. It is a reimplementation of a similar/same
* idea from Guenter Geiger's [using] object. <hans@at.or.at>
*
* This object currently depends on the packages/patches/libdir-0.38-4.patch
* for sys_load_lib_dir().
*/
#include "m_pd.h"
#include "s_stuff.h"
static t_class *import_class;
typedef struct _import
{
t_object x_obj;
t_atom* loaded_libs;
t_atom* current;
t_int num_libs;
t_outlet *x_data_outlet;
t_outlet *x_status_outlet;
} t_import;
static int import_load_lib(char *libname)
{
post("import_load_lib");
/* sys_load_lib_dir is only used on Pd-extended < 0.40 */
#if (PD_MINOR_VERSION >= 40)
t_canvas *canvas = canvas_getcurrent();
if (!sys_load_lib(canvas, libname))
{
post("%s: can't load library in %s", libname, sys_libdir->s_name);
return 0;
}
#else
if (!sys_load_lib(sys_libdir->s_name, libname))
{
if (!sys_load_lib_dir(sys_libdir->s_name, libname))
{
post("%s: can't load library in %s", libname, sys_libdir->s_name);
return 0;
}
}
return 1;
#endif
}
static void import_load_arguments(t_import *x, int argc, t_atom *argv)
{
t_symbol *libname;
while (argc--) {
switch (argv->a_type) {
case A_FLOAT:
post("[import] ERROR: floats not supported yet: %f",atom_getfloat(argv));
break;
case A_SYMBOL:
libname = atom_getsymbol(argv);
if (import_load_lib(libname->s_name))
{
x->loaded_libs = copybytes(libname, sizeof(t_atom));
x->current = x->loaded_libs;
x->num_libs++;
}
post("[import] loaded library: %s",libname->s_name);
break;
default:
post("[import] ERROR: Unsupported atom type");
}
argv++;
}
}
static void import_bang(t_import *x)
{
t_int i = x->num_libs;
t_atom* libs_list = x->loaded_libs;
post("[import]: %d libs loaded.",x->num_libs);
while(i--)
{
startpost(" %s",(atom_getsymbol(libs_list))->s_name);
libs_list++;
}
endpost();
}
static void *import_new(t_symbol *s, int argc, t_atom *argv)
{
t_import *x = (t_import *)pd_new(import_class);
char buffer[MAXPDSTRING];
x->loaded_libs = 0;
x->num_libs = 0;
x->x_data_outlet = outlet_new(&x->x_obj, &s_symbol);
x->x_status_outlet = outlet_new(&x->x_obj, 0);
import_load_arguments(x,argc,argv);
return (x);
}
static void import_free(t_import *x)
{
if (x->loaded_libs) {
freebytes(x->loaded_libs, x->num_libs * sizeof(t_atom));
x->loaded_libs = 0;
x->num_libs = 0;
}
/* TODO: look into freeing the namelist. It probably does not need to
* happen, since this class is just copying the pointer of an existing
* namelist that is handled elsewhere. */
}
void import_setup(void)
{
import_class = class_new(gensym("import"), (t_newmethod)import_new,
(t_method)import_free,
sizeof(t_import),
CLASS_DEFAULT,
A_GIMME,
0);
class_addbang (import_class, import_bang);
}
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