From 11dac9a08123dd2a3151b86f8f0128ed75acdc65 Mon Sep 17 00:00:00 2001
From: Thomas O Fredericks <mrtof@users.sourceforge.net>
Date: Sun, 10 Oct 2010 16:59:22 +0000
Subject: listUnfold is depracated, list_unfold replaces it

svn path=/trunk/externals/tof/; revision=14211
---
 src/listUnfold.c  |   3 ++
 src/list_unfold.c | 159 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 162 insertions(+)
 create mode 100644 src/list_unfold.c

diff --git a/src/listUnfold.c b/src/listUnfold.c
index 60ad36a..38bb610 100644
--- a/src/listUnfold.c
+++ b/src/listUnfold.c
@@ -145,6 +145,9 @@ void *listUnfold_new(t_symbol *s, int argc, t_atom *argv)
 }
 
 void listUnfold_setup(void) {
+	
+	post("WARNING: listUnfold is depracated, please use list_unfold instead.");
+	
   listUnfold_class = class_new(gensym("listUnfold"),
         (t_newmethod)listUnfold_new,
         (t_method)listUnfold_free, sizeof(t_listUnfold),
diff --git a/src/list_unfold.c b/src/list_unfold.c
new file mode 100644
index 0000000..3d603cb
--- /dev/null
+++ b/src/list_unfold.c
@@ -0,0 +1,159 @@
+#include "m_pd.h"
+#include <string.h>
+#define IS_A_SYMBOL(atom,index) ((atom+index)->a_type == A_SYMBOL)
+#define IS_A_FLOAT(atom,index) ((atom+index)->a_type == A_FLOAT)
+
+/* Mode 0: unfold all the list till its end or when banged.
+ * Mode 1: unfold each element of the list at each bang.
+ * Mode 0 is by default. Mode 1 is activated when list_unfold is
+ * created with "wait" or "manually" as only argument.
+ */
+
+static t_class *list_unfold_class;
+
+typedef struct _list_unfold {
+  t_object  		x_obj;
+  t_int 			iterating;
+  t_outlet* 		outlet1;
+  t_outlet* 		outlet2;
+  t_int 			mode;
+  int 				memSize;
+  int 				ac;
+  t_atom*			av;
+} t_list_unfold;
+
+
+
+
+
+void list_unfold_bang(t_list_unfold *x)
+{
+	
+	
+  //x->i_count = x->i_down;
+  if ( x->mode == 0) {
+	x->iterating = 0;
+  } else {
+	  int i;
+	  
+	 if ( x->iterating < x->ac ) {
+		 i = x->iterating;
+		 x->iterating++;
+		 outlet_float(x->outlet2,i);
+		if ( IS_A_FLOAT(x->av,i) ) {
+			outlet_float(x->outlet1,atom_getfloat(x->av + i));
+		} else {
+			outlet_symbol(x->outlet1,atom_getsymbol(x->av + i));
+		}
+		
+	 }
+  } 
+  
+}
+
+
+void list_unfold_anything(t_list_unfold *x, t_symbol* s, int ac, t_atom* av)
+{
+	
+	
+	
+	if ( x->mode == 0) {
+		
+		// Output all
+		
+		int i =0;
+		int offset =0;
+		x->iterating = 1;
+		 
+		if ( s != &s_list && s != &s_float && s != &s_symbol ) {
+			outlet_float(x->outlet2,0);
+			outlet_symbol(x->outlet1,s);
+			offset=1;
+		}
+				
+		for ( ; i < ac && x->iterating; i++ ) {
+			outlet_float(x->outlet2,i+offset);
+			if ( IS_A_FLOAT(av,0) ) {
+				outlet_float(x->outlet1,atom_getfloat(av));
+			} else {
+				outlet_symbol(x->outlet1,atom_getsymbol(av));
+			}
+			av++;
+		}
+  } else {
+	  
+	  x->iterating = 0;
+	  
+	    // Copy and wait for bangs to output
+	  
+	  
+	     int do_selector = ( s != &s_list && s != &s_float && s != &s_symbol );
+		 x->ac = ac + do_selector; //One more for the selector
+		 
+		// Resize memory if required and add 3 atoms just in case
+		if(x->ac > x->memSize) {	
+				x->av = resizebytes(x->av, x->memSize * sizeof(*(x->av)), 
+					(3 + x->ac) * sizeof(*(x->av)));
+				x->memSize = 3 + x->ac;
+		}
+		t_atom* dst = x->av; 
+		
+		// Copy selector
+		if ( do_selector ) {
+			SETSYMBOL(dst, s);
+			dst++;
+		}
+		// Copy atoms
+		while(ac--) *dst++ = *av++;
+		
+	  
+  }
+	
+}
+
+
+static void list_unfold_free(t_list_unfold *x)
+{
+    freebytes(x->av, x->memSize * sizeof(*(x->av)));
+}
+
+void *list_unfold_new(t_symbol *s, int argc, t_atom *argv)
+{
+  t_list_unfold *x = (t_list_unfold *)pd_new(list_unfold_class);
+  
+  x->iterating = 0;
+ 
+  x->mode = 0;
+ 
+  if (argc && IS_A_SYMBOL(argv,0) ) {
+	  t_symbol* type = atom_getsymbol(argv);
+	  if (strcmp(type->s_name,"wait")==0 || strcmp(type->s_name,"manually")==0) {
+		  x->mode = 1;
+	}	
+  }
+ 
+  // Initialize memory
+  x->memSize = 10;
+  x->ac = 0;
+  x->av = getbytes(x->memSize * sizeof(*(x->av)));
+
+  x->outlet1 = outlet_new(&x->x_obj, &s_list);
+  x->outlet2 = outlet_new(&x->x_obj, &s_float);
+
+
+  return (void *)x;
+}
+
+void list_unfold_setup(void) {
+  list_unfold_class = class_new(gensym("list_unfold"),
+        (t_newmethod)list_unfold_new,
+        (t_method)list_unfold_free, sizeof(t_list_unfold),
+        CLASS_DEFAULT, 
+        A_GIMME, 0);
+   
+
+  class_addbang  (list_unfold_class, list_unfold_bang);
+  class_addanything (list_unfold_class, list_unfold_anything);
+  //class_addlist (list_unfold_class, list_unfold_list);
+  
+}
-- 
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