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vendor/phar-io/version/src/PreReleaseSuffix.php

@@ -0,0 +1,95 @@
+<?php
+
+namespace PharIo\Version;
+
+class PreReleaseSuffix {
+    private $valueScoreMap = [
+        'dev' => 0,
+        'a' => 1,
+        'alpha' => 1,
+        'b' => 2,
+        'beta' => 2,
+        'rc' => 3,
+        'p' => 4,
+        'patch' => 4,
+    ];
+
+    /**
+     * @var string
+     */
+    private $value;
+
+    /**
+     * @var int
+     */
+    private $valueScore;
+
+    /**
+     * @var int
+     */
+    private $number = 0;
+
+    /**
+     * @param string $value
+     */
+    public function __construct($value) {
+        $this->parseValue($value);
+    }
+
+    /**
+     * @return string
+     */
+    public function getValue() {
+        return $this->value;
+    }
+
+    /**
+     * @return int|null
+     */
+    public function getNumber() {
+        return $this->number;
+    }
+
+    /**
+     * @param PreReleaseSuffix $suffix
+     *
+     * @return bool
+     */
+    public function isGreaterThan(PreReleaseSuffix $suffix) {
+        if ($this->valueScore > $suffix->valueScore) {
+            return true;
+        }
+
+        if ($this->valueScore < $suffix->valueScore) {
+            return false;
+        }
+
+        return $this->getNumber() > $suffix->getNumber();
+    }
+
+    /**
+     * @param $value
+     *
+     * @return int
+     */
+    private function mapValueToScore($value) {
+        if (array_key_exists($value, $this->valueScoreMap)) {
+            return $this->valueScoreMap[$value];
+        }
+
+        return 0;
+    }
+
+    private function parseValue($value) {
+        $regex = '/-?(dev|beta|b|rc|alpha|a|patch|p)\.?(\d*).*$/i';
+        if (preg_match($regex, $value, $matches) !== 1) {
+            throw new InvalidPreReleaseSuffixException(sprintf('Invalid label %s', $value));
+        }
+
+        $this->value = $matches[1];
+        if (isset($matches[2])) {
+            $this->number = (int)$matches[2];
+        }
+        $this->valueScore = $this->mapValueToScore($this->value);
+    }
+}