From 2b60d55c919e7588f5aff15936e83c300b3660bb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?IOhannes=20m=20zm=C3=B6lnig?=
 <zmoelnig@users.sourceforge.net>
Date: Tue, 22 Mar 2005 20:58:25 +0000
Subject: zexy-2.0: - use of abstractions for objects that allow it - some
 objects are build both as externals and abstractions (as slower fallbacks) -
 code-layout is now 1:1 c-file<->object (this should allow for building of
 zexy as  a collection of externals instead as a big library) - matrix-objects
 have moved to iemmatrix !!

svn path=/trunk/externals/zexy/; revision=2641
---
 src/glue.c | 114 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 114 insertions(+)
 create mode 100644 src/glue.c

(limited to 'src/glue.c')

diff --git a/src/glue.c b/src/glue.c
new file mode 100644
index 0000000..de9a88a
--- /dev/null
+++ b/src/glue.c
@@ -0,0 +1,114 @@
+/******************************************************
+ *
+ * zexy - implementation file
+ *
+ * copyleft (c) IOhannes m zmölnig
+ *
+ *   1999:forum::für::umläute:2004
+ *
+ *   institute of electronic music and acoustics (iem)
+ *
+ ******************************************************
+ *
+ * license: GNU General Public License v.2
+ *
+ ******************************************************/
+
+
+#include "zexy.h"
+#include <string.h>
+
+
+/* ------------------------- glue ------------------------------- */
+
+/* glue 2 lists together (append) */
+
+static t_class *glue_class;
+
+typedef struct _glue
+{
+  t_object x_obj;
+
+  t_atom *ap2, *ap;
+  t_int n1, n2, n;
+
+  t_int changed;
+} t_glue;
+
+static void glue_lst2(t_glue *x, t_symbol *s, int argc, t_atom *argv)
+{
+  x->changed = 1;
+  if (x->n2 != argc) {
+    freebytes(x->ap2, x->n2 * sizeof(t_atom));
+    x->n2 = argc;
+    x->ap2 = copybytes(argv, argc * sizeof(t_atom));
+  } else memcpy(x->ap2, argv, argc * sizeof(t_atom));
+}
+
+static void glue_lst(t_glue *x, t_symbol *s, int argc, t_atom *argv)
+{
+  if (x->n != x->n2+argc) {
+    freebytes(x->ap, x->n * sizeof(t_atom));
+    x->n1 = argc;
+    x->n  = x->n1+x->n2;
+    x->ap = (t_atom *)getbytes(sizeof(t_atom)*x->n);
+    memcpy(x->ap+argc, x->ap2, x->n2*sizeof(t_atom));
+  } else if ((x->n1 != argc)||x->changed)memcpy(x->ap+argc, x->ap2, x->n2*sizeof(t_atom));
+
+  x->n1 = argc;
+  memcpy(x->ap, argv, x->n1*sizeof(t_atom));
+
+  x->changed=0;
+
+  outlet_list(x->x_obj.ob_outlet, gensym("list"), x->n, x->ap);
+}
+
+static void glue_bang(t_glue *x)
+{
+  if (x->changed) {
+    if (x->n1+x->n2 != x->n){
+      t_atom *ap = (t_atom*)getbytes(sizeof(t_atom)*(x->n1+x->n2));
+      memcpy(ap, x->ap, x->n1*sizeof(t_atom));
+      freebytes(x->ap, sizeof(t_atom)*x->n);
+      x->ap=ap;
+      x->n=x->n1+x->n2;
+    }
+    memcpy(x->ap+x->n1, x->ap2, x->n2*sizeof(t_atom));
+    x->changed=0;
+  }
+
+  outlet_list(x->x_obj.ob_outlet, gensym("list"), x->n, x->ap);
+}
+
+static void glue_free(t_glue *x)
+{
+  freebytes(x->ap,  sizeof(t_atom)*x->n);
+  freebytes(x->ap2, sizeof(t_atom)*x->n2);
+}
+
+static void *glue_new(t_symbol *s, int argc, t_atom *argv)
+{
+  t_glue *x = (t_glue *)pd_new(glue_class);
+
+  inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("list"), gensym(""));
+  outlet_new(&x->x_obj, 0);
+  x->n =x->n2  = 0;
+  x->ap=x->ap2 = 0;
+  x->changed   = 0;
+
+  if (argc)glue_lst2(x, gensym("list"), argc, argv);
+
+  return (x);
+}
+
+void glue_setup(void)
+{
+  glue_class = class_new(gensym("glue"), (t_newmethod)glue_new, 
+			 (t_method)glue_free, sizeof(t_glue), 0, A_GIMME, 0);
+  class_addlist(glue_class, glue_lst);
+  class_addmethod  (glue_class, (t_method)glue_lst2, gensym(""), A_GIMME, 0);
+  class_addbang(glue_class, glue_bang);
+
+  class_sethelpsymbol(glue_class, gensym("zexy/glue"));
+  zexy_register("glue");
+}
-- 
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