1 files changed, 144 insertions, 0 deletions
diff --git a/modules/monitoring/library/Monitoring/Plugin/PerfdataSet.php b/modules/monitoring/library/Monitoring/Plugin/PerfdataSet.php
new file mode 100644
index 0000000..ef1ca0c
--- /dev/null
+++ b/modules/monitoring/library/Monitoring/Plugin/PerfdataSet.php
@@ -0,0 +1,144 @@
+<?php
+/* Icinga Web 2 | (c) 2013 Icinga Development Team | GPLv2+ */
+
+namespace Icinga\Module\Monitoring\Plugin;
+
+use ArrayIterator;
+use IteratorAggregate;
+use Traversable;
+
+class PerfdataSet implements IteratorAggregate
+{
+    /**
+     * The performance data being parsed
+     *
+     * @var string
+     */
+    protected $perfdataStr;
+
+    /**
+     * The current parsing position
+     *
+     * @var int
+     */
+    protected $parserPos = 0;
+
+    /**
+     * A list of Perfdata objects
+     *
+     * @var array
+     */
+    protected $perfdata = array();
+
+    /**
+     * Create a new set of performance data
+     *
+     * @param   string      $perfdataStr    A space separated list of label/value pairs
+     */
+    protected function __construct($perfdataStr)
+    {
+        if ($perfdataStr && ($perfdataStr = trim($perfdataStr))) {
+            $this->perfdataStr = $perfdataStr;
+            $this->parse();
+        }
+    }
+
+    /**
+     * Return a iterator for this set of performance data
+     *
+     * @return  ArrayIterator
+     */
+    public function getIterator(): Traversable
+    {
+        return new ArrayIterator($this->asArray());
+    }
+
+    /**
+     * Return a new set of performance data
+     *
+     * @param   string      $perfdataStr    A space separated list of label/value pairs
+     *
+     * @return  PerfdataSet
+     */
+    public static function fromString($perfdataStr)
+    {
+        return new static($perfdataStr);
+    }
+
+    /**
+     * Return this set of performance data as array
+     *
+     * @return  array
+     */
+    public function asArray()
+    {
+        return $this->perfdata;
+    }
+
+    /**
+     * Parse the current performance data
+     */
+    protected function parse()
+    {
+        while ($this->parserPos < strlen($this->perfdataStr)) {
+            $label = trim($this->readLabel());
+            $value = trim($this->readUntil(' '));
+
+            if ($label) {
+                $this->perfdata[] = new Perfdata($label, $value);
+            }
+        }
+    }
+
+    /**
+     * Return the next label found in the performance data
+     *
+     * @return  string      The label found
+     */
+    protected function readLabel()
+    {
+        $this->skipSpaces();
+        if (in_array($this->perfdataStr[$this->parserPos], array('"', "'"))) {
+            $quoteChar = $this->perfdataStr[$this->parserPos++];
+            $label = $this->readUntil('=');
+            $this->parserPos++;
+
+            if (($closingPos = strpos($label, $quoteChar)) > 0) {
+                $label = substr($label, 0, $closingPos);
+            }
+        } else {
+            $label = $this->readUntil('=');
+            $this->parserPos++;
+        }
+
+        $this->skipSpaces();
+        return $label;
+    }
+
+    /**
+     * Return all characters between the current parser position and the given character
+     *
+     * @param   string  $stopChar   The character on which to stop
+     *
+     * @return  string
+     */
+    protected function readUntil($stopChar)
+    {
+        $start = $this->parserPos;
+        while ($this->parserPos < strlen($this->perfdataStr) && $this->perfdataStr[$this->parserPos] !== $stopChar) {
+            $this->parserPos++;
+        }
+
+        return substr($this->perfdataStr, $start, $this->parserPos - $start);
+    }
+
+    /**
+     * Advance the parser position to the next non-whitespace character
+     */
+    protected function skipSpaces()
+    {
+        while ($this->parserPos < strlen($this->perfdataStr) && $this->perfdataStr[$this->parserPos] === ' ') {
+            $this->parserPos++;
+        }
+    }
+}