add piwik installation

www/analytics/core/Period/Year.php

@@ -0,0 +1,87 @@
+<?php
+/**
+ * Piwik - Open source web analytics
+ *
+ * @link http://piwik.org
+ * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
+ *
+ */
+namespace Piwik\Period;
+
+use Piwik\Date;
+use Piwik\Period;
+
+/**
+ */
+class Year extends Period
+{
+    protected $label = 'year';
+
+    /**
+     * Returns the current period as a localized short string
+     *
+     * @return string
+     */
+    public function getLocalizedShortString()
+    {
+        return $this->getLocalizedLongString();
+    }
+
+    /**
+     * Returns the current period as a localized long string
+     *
+     * @return string
+     */
+    public function getLocalizedLongString()
+    {
+        //"2009"
+        $out = $this->getDateStart()->getLocalized("%longYear%");
+        return $out;
+    }
+
+    /**
+     * Returns the current period as a string
+     *
+     * @return string
+     */
+    public function getPrettyString()
+    {
+        $out = $this->getDateStart()->toString('Y');
+        return $out;
+    }
+
+    /**
+     * Generates the subperiods (one for each month of the year)
+     */
+    protected function generate()
+    {
+        if ($this->subperiodsProcessed) {
+            return;
+        }
+        parent::generate();
+
+        $year = $this->date->toString("Y");
+        for ($i = 1; $i <= 12; $i++) {
+            $this->addSubperiod(new Month(
+                    Date::factory("$year-$i-01")
+                )
+            );
+        }
+    }
+
+    /**
+     * Returns the current period as a string
+     *
+     * @param string $format
+     * @return array
+     */
+    function toString($format = 'ignored')
+    {
+        $this->generate();
+        $stringMonth = array();
+        foreach ($this->subperiods as $month) {
+            $stringMonth[] = $month->getDateStart()->toString("Y") . "-" . $month->getDateStart()->toString("m") . "-01";
+        }
+        return $stringMonth;
+    }
+}