summaryrefslogtreecommitdiff
path: root/ext/spl/examples/filter.inc
diff options
context:
space:
mode:
Diffstat (limited to 'ext/spl/examples/filter.inc')
-rwxr-xr-xext/spl/examples/filter.inc96
1 files changed, 0 insertions, 96 deletions
diff --git a/ext/spl/examples/filter.inc b/ext/spl/examples/filter.inc
deleted file mode 100755
index be25d6b1aa..0000000000
--- a/ext/spl/examples/filter.inc
+++ /dev/null
@@ -1,96 +0,0 @@
-<?php
-
-/**
- * @brief Regular expression filter for string iterators
- * @author Marcus Boerger
- * @version 1.0
- *
- * Instances of this class act as a filter around iterators whose elements
- * are strings. In other words you can put an iterator into the constructor
- * and the instance will only return elements which match the given regular
- * expression.
- */
-class filter implements spl_forward
-{
- protected $it;
- protected $regex;
- protected $curr;
-
- /**
- * Constructs a filter around an iterator whose elemnts are strings.
- * If the given iterator is of type spl_sequence then its rewind()
- * method is called.
- *
- * @param it Object that implements at least spl_forward
- * @patam regex Regular expression used as a filter.
- */
- function __construct(spl_forward $it, $regex) {
- if ($it instanceof spl_sequence) {
- $it->rewind();
- }
- $this->it = $it;
- $this->regex = $regex;
- $this->fetch();
- }
-
- /**
- * Destruct the iterator.
- */
- function __destruct() {
- unset($this->it);
- }
-
- protected function accept($curr) {
- return ereg($this->regex, $curr);
- }
-
- /**
- * Fetch next element and store it.
- *
- * @return void
- */
- protected function fetch() {
- $this->curr = false;
- while ($this->it->has_more()) {
- $curr = $this->it->current();
- if ($this->accept($curr)) {
- $this->curr = $curr;
- return;
- }
- $this->it->next();
- };
- }
-
- /**
- * Move to next element
- *
- * @return void
- */
- function next() {
- $this->it->next();
- $this->fetch();
- }
-
- /**
- * @return Whether more elements are available
- */
- function has_more() {
- return $this->curr !== false;
- }
-
- /**
- * @return The current value
- */
- function current() {
- return $this->curr;
- }
-
- /**
- * hidden __clone
- */
- protected function __clone() {
- // disallow clone
- }
-}
-
-?> \ No newline at end of file