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<?php

// implementation of Cyclic array
// 2001-11-03 Dobrica Pavlinusic <dpavlin@rot13.org>

// generally functions return boolean if array looped

class Cyclic_Arr {
        var $size;              // number of elements before cycle
        var $arr = Array();     // actual data
        var $pos = 0;           // current position
        var $did_loop = 0;      // did last move made loop?

        // init size of array
        function set_size($size) {
                $this->size=$size;
        }

        // put element into array, move to next
        function push($val) {
                $this->arr[$this->pos] = $val;
                $this->next();
                //return $this->did_loop;
        }

        // get element from array, move to next
        function fetch() {
                $out = $this->arr[$this->pos];
                $this->next();
                return $out;
        }

        // move to next
        function next() {
                if ($this->pos == $this->size) $this->did_loop = 1;
                $this->pos = ($this->pos + 1) % $this->size;
                return $this->did_loop;
        }

        // move to previous
        function prev() {
                if ($this->pos == 0) $this->did_loop = 1;
                $this->pos = ($this->pos + $this->size - 1) % $this->size;
                return $this->did_loop;
        }

        // tell size of array
        function tell_size() {
                return $this->size;
        }

        // tell current position in array
        function tell_pos() {
                return $this->pos;
        }

        function did_loop() {
                return $this->did_loop;
        }

}

?>
1	dpavlin	1.1	<?php
2
3			// implementation of Cyclic array
4			// 2001-11-03 Dobrica Pavlinusic <dpavlin@rot13.org>
5
6			// generally functions return boolean if array looped
7
8			class Cyclic_Arr {
9			var $size; // number of elements before cycle
10			var $arr = Array(); // actual data
11			var $pos = 0; // current position
12			var $did_loop = 0; // did last move made loop?
13
14			// init size of array
15			function set_size($size) {
16			$this->size=$size;
17			}
18
19			// put element into array, move to next
20			function push($val) {
21			$this->arr[$this->pos] = $val;
22			$this->next();
23			//return $this->did_loop;
24			}
25
26			// get element from array, move to next
27			function fetch() {
28			$out = $this->arr[$this->pos];
29			$this->next();
30			return $out;
31			}
32
33			// move to next
34			function next() {
35			if ($this->pos == $this->size) $this->did_loop = 1;
36			$this->pos = ($this->pos + 1) % $this->size;
37			return $this->did_loop;
38			}
39
40			// move to previous
41			function prev() {
42			if ($this->pos == 0) $this->did_loop = 1;
43			$this->pos = ($this->pos + $this->size - 1) % $this->size;
44			return $this->did_loop;
45			}
46
47			// tell size of array
48			function tell_size() {
49			return $this->size;
50			}
51
52			// tell current position in array
53			function tell_pos() {
54			return $this->pos;
55			}
56
57			function did_loop() {
58			return $this->did_loop;
59			}
60
61			}
62
63			?>