feat: add semantic version parser

src/SemanticVersion.php

@@ -0,0 +1,92 @@
+<?php
+
+namespace ConventionalChangelog;
+
+class SemanticVersion
+{
+    public const RELEASE_MAJOR = 'major';
+    public const RELEASE_MINOR = 'minor';
+    public const RELEASE_PATCH = 'patch';
+    public const RELEASE_RC = 'rc';
+    public const RELEASE_BETA = 'beta';
+    public const RELEASE_ALPHA = 'alpha';
+
+    /**
+     * @var string
+     */
+    protected $version;
+
+    /**
+     * Constructor.
+     *
+     * @param $version
+     */
+    public function __construct($version)
+    {
+        $this->setVersion($version);
+    }
+
+    /**
+     * Bump version.
+     *
+     * @param string $mode
+     */
+    public function bump($mode): string
+    {
+        $version = $this->getVersion();
+
+        $newVersion = [0, 0, 0];
+        $version = preg_replace('#^v#i', '', $version);
+
+        // Generate new version code
+        $split = explode('-', $version);
+        $extra = !empty($split[1]) ? $split[1] : '';
+        $parts = explode('.', $split[0]);
+
+        foreach ($parts as $key => $value) {
+            $newVersion[$key] = (int)$value;
+        }
+
+        $extraModes = [self::RELEASE_RC, self::RELEASE_BETA, self::RELEASE_ALPHA];
+
+        if (in_array($mode, $extraModes)) {
+            $partsExtra = explode('.', $extra);
+            $extraName = $partsExtra[0];
+            $extraVersion = !empty($partsExtra[1]) ? $partsExtra[1] : 0;
+            if (is_numeric($extraName) && (empty($partsExtra[1]) || !is_numeric($partsExtra[1]))) {
+                $extraVersion = $partsExtra[0];
+            } elseif ($extraName !== $mode) {
+                $extraVersion = 0;
+            }
+            $extraVersion++;
+            $extra = "{$mode}.{$extraVersion}";
+        }
+
+        if ($mode === self::RELEASE_MAJOR) {
+            $newVersion[0]++;
+        } elseif ($mode === self::RELEASE_MINOR) {
+            $newVersion[1]++;
+        } elseif ($mode === self::RELEASE_PATCH) {
+            $newVersion[2]++;
+        }
+
+        // Recompose semver
+        $version = implode('.', $newVersion) . (!empty($extra) ? '-' . $extra : '');
+
+        $this->setVersion($version);
+
+        return $version;
+    }
+
+    public function getVersion(): string
+    {
+        return $this->version;
+    }
+
+    public function setVersion(string $version): SemanticVersion
+    {
+        $this->version = $version;
+
+        return $this;
+    }
+}