From 577ac6e80ff4f436fbd054291ed7dddbc31bd49a Mon Sep 17 00:00:00 2001
From: Hans-Christoph Steiner <eighthave@users.sourceforge.net>
Date: Tue, 18 May 2004 21:33:33 +0000
Subject: This commit was generated by cvs2svn to compensate for changes in
 r1738, which included commits to RCS files with non-trunk default branches.

svn path=/trunk/externals/iemlib/; revision=1739
---
 src/iemlib2/dollarg.c | 113 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 113 insertions(+)
 create mode 100644 src/iemlib2/dollarg.c

(limited to 'src/iemlib2/dollarg.c')

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"));
+}
-- 
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