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-rw-r--r--src/iemlib2/dollarg.c113
1 files changed, 113 insertions, 0 deletions
diff --git a/src/iemlib2/dollarg.c b/src/iemlib2/dollarg.c
new file mode 100644
index 0000000..253c0ff
--- /dev/null
+++ b/src/iemlib2/dollarg.c
@@ -0,0 +1,113 @@
+/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
+* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
+
+iemlib2 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2003 */
+
+#ifdef NT
+#pragma warning( disable : 4244 )
+#pragma warning( disable : 4305 )
+#endif
+
+#include "m_pd.h"
+#include "g_canvas.h"
+#include "iemlib.h"
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <math.h>
+
+EXTERN void canvas_getargs(int *argcp, t_atom **argvp);
+
+/* ------------------------ dollarg ---------------------------- */
+
+static t_class *dollarg_class;
+
+typedef struct _dollarg
+{
+ t_object x_obj;
+ void *x_outlet_ac;
+ t_atom *x_at;
+ int x_ac;
+} t_dollarg;
+
+static void dollarg_float(t_dollarg *x, t_floatarg f)
+{
+ int i = (int)f;
+
+ if(!i)
+ {
+ outlet_float(x->x_outlet_ac, x->x_ac);
+ if(x->x_ac)
+ outlet_list(x->x_obj.ob_outlet, &s_list, x->x_ac, x->x_at);
+ }
+ else if(i > 0)
+ {
+ if(i <= x->x_ac)
+ {
+ outlet_float(x->x_outlet_ac, i);
+ if(IS_A_FLOAT(x->x_at, i-1))
+ outlet_float(x->x_obj.ob_outlet, atom_getfloatarg(i-1, x->x_ac, x->x_at));
+ else if(IS_A_SYMBOL(x->x_at, i-1))
+ outlet_symbol(x->x_obj.ob_outlet, atom_getsymbolarg(i-1, x->x_ac, x->x_at));
+ }
+ else
+ outlet_float(x->x_outlet_ac, 0);
+ }
+ else
+ {
+ int j = x->x_ac + i;
+
+ if(j >= 0)
+ {
+ outlet_float(x->x_outlet_ac, j+1);
+ if(IS_A_FLOAT(x->x_at, j))
+ outlet_float(x->x_obj.ob_outlet, atom_getfloatarg(j, x->x_ac, x->x_at));
+ else if(IS_A_SYMBOL(x->x_at, j))
+ outlet_symbol(x->x_obj.ob_outlet, atom_getsymbolarg(j, x->x_ac, x->x_at));
+ }
+ else
+ outlet_float(x->x_outlet_ac, 0);
+ }
+}
+
+static void dollarg_bang(t_dollarg *x)
+{
+ dollarg_float(x, 0.0f);
+}
+
+static void dollarg_free(t_dollarg *x)
+{
+ if(x->x_ac)
+ freebytes(x->x_at, x->x_ac * sizeof(t_atom));
+}
+
+static void *dollarg_new(void)
+{
+ t_dollarg *x = (t_dollarg *)pd_new(dollarg_class);
+ t_glist *glist=(t_glist *)canvas_getcurrent();
+ t_canvas *canvas=glist_getcanvas(glist);
+ int pargc;
+ t_atom *pargv, *at;
+
+ canvas_setcurrent(canvas);
+ canvas_getargs(&pargc, &pargv);
+ canvas_unsetcurrent(canvas);
+ x->x_at = (t_atom *)getbytes(pargc*sizeof(t_atom));
+ x->x_ac = pargc;
+ at = x->x_at;
+ while(pargc--)
+ *at++ = *pargv++;
+ outlet_new(&x->x_obj, &s_list);
+ x->x_outlet_ac = outlet_new(&x->x_obj, &s_float);
+ return (x);
+}
+
+void dollarg_setup(void)
+{
+ dollarg_class = class_new(gensym("dollarg"), (t_newmethod)dollarg_new,
+ (t_method)dollarg_free, sizeof(t_dollarg), 0, 0);
+ class_addcreator((t_newmethod)dollarg_new, gensym("$n"), 0);
+ class_addbang(dollarg_class, (t_method)dollarg_bang);
+ class_addfloat(dollarg_class, (t_method)dollarg_float);
+ class_sethelpsymbol(dollarg_class, gensym("iemhelp/help-dollarg"));
+}