1 files changed, 47 insertions, 0 deletions
diff --git a/cli/i18n/I18nUsageValidator.php b/cli/i18n/I18nUsageValidator.php
new file mode 100644
index 000000000..8ab934971
--- /dev/null
+++ b/cli/i18n/I18nUsageValidator.php
@@ -0,0 +1,47 @@
+<?php
+
+require_once __DIR__ . '/I18nValidatorInterface.php';
+
+class I18nUsageValidator implements I18nValidatorInterface {
+
+	private $code;
+	private $reference;
+	private $totalEntries = 0;
+	private $failedEntries = 0;
+	private $result = '';
+
+	public function __construct($reference, $code) {
+		$this->code = $code;
+		$this->reference = $reference;
+	}
+
+	public function displayReport() {
+		return sprintf('%5.1f%% of translation keys are unused.', $this->failedEntries / $this->totalEntries * 100) . PHP_EOL;
+	}
+
+	public function displayResult() {
+		return $this->result;
+	}
+
+	public function validate($ignore) {
+		foreach ($this->reference as $file => $data) {
+			foreach ($data as $key => $value) {
+				$this->totalEntries++;
+				if (preg_match('/\._$/', $key) && in_array(preg_replace('/\._$/', '', $key), $this->code)) {
+					continue;
+				}
+				if (is_array($ignore) && in_array($key, $ignore)) {
+					continue;
+				}
+				if (!in_array($key, $this->code)) {
+					$this->result .= sprintf('Unused key %s - %s', $key, $value) . PHP_EOL;
+					$this->failedEntries++;
+					continue;
+				}
+			}
+		}
+
+		return 0 === $this->failedEntries;
+	}
+
+}