add piwik installation

www/analytics/core/Period/Day.php

@@ -0,0 +1,102 @@
+<?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 Exception;
+use Piwik\Period;
+use Piwik\Piwik;
+
+/**
+ */
+class Day extends Period
+{
+    protected $label = 'day';
+
+    /**
+     * Returns the day of the period as a string
+     *
+     * @return string
+     */
+    public function getPrettyString()
+    {
+        $out = $this->getDateStart()->toString();
+        return $out;
+    }
+
+    /**
+     * Returns the day of the period as a localized short string
+     *
+     * @return string
+     */
+    public function getLocalizedShortString()
+    {
+        //"Mon 15 Aug"
+        $date = $this->getDateStart();
+        $out = $date->getLocalized(Piwik::translate('CoreHome_ShortDateFormat'));
+        return $out;
+    }
+
+    /**
+     * Returns the day of the period as a localized long string
+     *
+     * @return string
+     */
+    public function getLocalizedLongString()
+    {
+        //"Mon 15 Aug"
+        $date = $this->getDateStart();
+        $template = Piwik::translate('CoreHome_DateFormat');
+        $out = $date->getLocalized($template);
+        return $out;
+    }
+
+    /**
+     * Returns the number of subperiods
+     * Always 0, in that case
+     *
+     * @return int
+     */
+    public function getNumberOfSubperiods()
+    {
+        return 0;
+    }
+
+    /**
+     * Adds a subperiod
+     * Not supported for day periods
+     *
+     * @param $date
+     * @throws Exception
+     */
+    public function addSubperiod($date)
+    {
+        throw new Exception("Adding a subperiod is not supported for Day");
+    }
+
+    /**
+     * Returns the day of the period in the given format
+     *
+     * @param string $format
+     * @return string
+     */
+    public function toString($format = "Y-m-d")
+    {
+        return $this->date->toString($format);
+    }
+
+    /**
+     * Returns the current period as a string
+     *
+     * @return string
+     */
+    public function __toString()
+    {
+        return $this->toString();
+    }
+}