1 files changed, 82 insertions, 0 deletions
diff --git a/vendor/phar-io/version/src/PreReleaseSuffix.php b/vendor/phar-io/version/src/PreReleaseSuffix.php
new file mode 100644
index 000000000..00563008e
--- /dev/null
+++ b/vendor/phar-io/version/src/PreReleaseSuffix.php
@@ -0,0 +1,82 @@
+<?php declare(strict_types = 1);
+namespace PharIo\Version;
+
+class PreReleaseSuffix {
+    private const valueScoreMap = [
+        'dev'   => 0,
+        'a'     => 1,
+        'alpha' => 1,
+        'b'     => 2,
+        'beta'  => 2,
+        'rc'    => 3,
+        'p'     => 4,
+        'pl'    => 4,
+        'patch' => 4,
+    ];
+
+    /** @var string */
+    private $value;
+
+    /** @var int */
+    private $valueScore;
+
+    /** @var int */
+    private $number = 0;
+
+    /** @var string */
+    private $full;
+
+    /**
+     * @throws InvalidPreReleaseSuffixException
+     */
+    public function __construct(string $value) {
+        $this->parseValue($value);
+    }
+
+    public function asString(): string {
+        return $this->full;
+    }
+
+    public function getValue(): string {
+        return $this->value;
+    }
+
+    public function getNumber(): ?int {
+        return $this->number;
+    }
+
+    public function isGreaterThan(PreReleaseSuffix $suffix): bool {
+        if ($this->valueScore > $suffix->valueScore) {
+            return true;
+        }
+
+        if ($this->valueScore < $suffix->valueScore) {
+            return false;
+        }
+
+        return $this->getNumber() > $suffix->getNumber();
+    }
+
+    private function mapValueToScore(string $value): int {
+        $value = \strtolower($value);
+
+        return self::valueScoreMap[$value];
+    }
+
+    private function parseValue(string $value): void {
+        $regex = '/-?((dev|beta|b|rc|alpha|a|patch|p|pl)\.?(\d*)).*$/i';
+
+        if (\preg_match($regex, $value, $matches) !== 1) {
+            throw new InvalidPreReleaseSuffixException(\sprintf('Invalid label %s', $value));
+        }
+
+        $this->full  = $matches[1];
+        $this->value = $matches[2];
+
+        if ($matches[3] !== '') {
+            $this->number = (int)$matches[3];
+        }
+
+        $this->valueScore = $this->mapValueToScore($matches[2]);
+    }
+}