feat: add new conventional commit parser

src/Commit/Body.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace ConventionalChangelog\Commit;
+
+use ConventionalChangelog\Type\Stringable;
+
+class Body implements Stringable
+{
+    /**
+     * @var string
+     */
+    public $content;
+
+    public function __construct(string $content)
+    {
+        $this->content = $content;
+    }
+
+    public function __toString(): string
+    {
+        return $this->content;
+    }
+}

src/Commit/Description.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace ConventionalChangelog\Commit;
+
+use ConventionalChangelog\Type\Stringable;
+
+class Description implements Stringable
+{
+    /**
+     * @var string
+     */
+    public $content;
+
+    public function __construct(string $content)
+    {
+        $this->content = $content;
+    }
+
+    public function __toString(): string
+    {
+        return $this->content;
+    }
+}

src/Commit/Footer.php

@@ -0,0 +1,33 @@
+<?php
+
+namespace ConventionalChangelog\Commit;
+
+use ConventionalChangelog\Type\Stringable;
+
+class Footer implements Stringable
+{
+    /**
+     * Token.
+     *
+     * @var string
+     */
+    public $token;
+
+    /**
+     * Value.
+     *
+     * @var string
+     */
+    public $value;
+
+    public function __construct(string $token, string $value)
+    {
+        $this->token = $token;
+        $this->value = $value;
+    }
+
+    public function __toString(): string
+    {
+        return $this->token . ': ' . $this->value;
+    }
+}

src/Commit/Parser.php

@@ -0,0 +1,203 @@
+<?php
+
+namespace ConventionalChangelog\Commit;
+
+use ConventionalChangelog\Helper\Format;
+use ConventionalChangelog\Type\Stringable;
+
+class Parser implements Stringable
+{
+    protected const PATTERN_HEADER = "/^(?'type'[a-z]+)(\((?'scope'.+)\))?(?'important'[!]?)[:][[:blank:]](?'description'.+)/iums";
+    protected const PATTERN_FOOTER = "/(?'token'^([a-z0-9_-]+|BREAKING[[:blank:]]CHANGES?))(?'value'([:][[:blank:]]|[[:blank:]]\#(?=\w)).*?)$/iums";
+
+    /**
+     * Raw content.
+     *
+     * @var string
+     */
+    protected $raw;
+
+    /**
+     * Sha hash.
+     *
+     * @var string
+     */
+    protected $hash;
+
+    /**
+     * Type.
+     *
+     * @var Type
+     */
+    protected $type;
+
+    /**
+     * Scope.
+     *
+     * @var Scope
+     */
+    protected $scope;
+
+    /**
+     * Important.
+     *
+     * @var bool
+     */
+    protected $important = false;
+
+    /**
+     * Description.
+     *
+     * @var Description
+     */
+    protected $description;
+
+    /**
+     * @var Body
+     */
+    protected $body;
+
+    /**
+     * Footers.
+     *
+     * @var Footer[]
+     */
+    protected $footers = [];
+
+    public function __construct(string $commit)
+    {
+        $this->raw = Format::clean($commit);
+
+        if (!$this->isValid()) {
+            return;
+        }
+
+        $rows = explode("\n", $commit);
+        $count = count($rows);
+        // Commit info
+        $this->hash = $rows[$count - 1];
+        $header = $rows[0];
+        $message = '';
+        // Get message
+        foreach ($rows as $i => $row) {
+            if ($i !== 0 && $i !== $count) {
+                $message .= $row . "\n";
+            }
+        }
+        $this->parseHeader($header);
+        $this->parseMessage($message);
+    }
+
+    /**
+     * Parse header.
+     */
+    protected function parseHeader(string $header)
+    {
+        preg_match(self::PATTERN_HEADER, $header, $matches);
+        $this->type = new Type($matches['type']);
+        $this->scope = new Scope($matches['scope']);
+        $this->important = !empty($matches['important']) ? true : false;
+        $this->description = new Description($matches['description']);
+    }
+
+    /**
+     * Parse message.
+     */
+    protected function parseMessage(string $message)
+    {
+        $body = Format::clean($message);
+        if (preg_match_all(self::PATTERN_FOOTER, $body, $matches, PREG_SET_ORDER, 0)) {
+            foreach ($matches as $match) {
+                $footer = $match[0];
+                $body = str_replace($footer, '', $body);
+                $value = ltrim($match['value'], ':');
+                $this->footers[] = new Footer($match['token'], $value);
+            }
+        }
+        $body = Format::clean($body);
+        $this->body = new Body($body);
+    }
+
+    public function isValid(): bool
+    {
+        return preg_match(self::PATTERN_HEADER, $this->raw);
+    }
+
+    public function getRaw(): string
+    {
+        return $this->raw;
+    }
+
+    public function getHash(): string
+    {
+        return $this->hash;
+    }
+
+    public function getShortHash(): string
+    {
+        return substr($this->hash, 0, 6);
+    }
+
+    public function getType(): Type
+    {
+        return $this->type;
+    }
+
+    public function getScope(): Scope
+    {
+        return $this->scope;
+    }
+
+    public function isImportant(): bool
+    {
+        return $this->important;
+    }
+
+    public function getDescription(): Description
+    {
+        return $this->description;
+    }
+
+    public function getBody(): Body
+    {
+        return $this->body;
+    }
+
+    /**
+     * @return Footer[]
+     */
+    public function getFooters(): array
+    {
+        return $this->footers;
+    }
+
+    public function getHeader()
+    {
+        $header = $this->type;
+        if (!empty((string)$this->scope)) {
+            $header .= '(' . $this->scope . ')';
+        }
+        if ($this->important) {
+            $header .= '!';
+        }
+        $header .= ': ' . $this->description;
+
+        return $header;
+    }
+
+    public function getMessage()
+    {
+        $footer = implode("\n", $this->footers);
+
+        return $this->body . "\n\n" . $footer;
+    }
+
+    public function __toString(): string
+    {
+        $header = $this->getHeader();
+        $message = $this->getMessage();
+        $string = $header . "\n\n" . $message;
+
+        return Format::clean($string);
+    }
+}

src/Commit/Scope.php

@@ -0,0 +1,31 @@
+<?php
+
+namespace ConventionalChangelog\Commit;
+
+use ConventionalChangelog\Helper\Format;
+use ConventionalChangelog\Type\Stringable;
+
+class Scope implements Stringable
+{
+    /**
+     * @var string
+     */
+    public $content;
+
+    public function __construct(string $content)
+    {
+        $this->content = $content;
+    }
+
+    public function __toString(): string
+    {
+        $string = $this->content;
+        $string = preg_replace('/[_]+/m', ' ', $string);
+        $string = ucfirst($string);
+        $string = preg_replace('/((?<=\p{Ll})\p{Lu})|((?!\A)\p{Lu}(?>\p{Ll}))/u', ' $0', $string);
+        $string = preg_replace('/\.(php|md|json|txt|csv|js)($|\s)/', '', $string);
+        $string = Format::clean($string);
+
+        return $string;
+    }
+}

src/Commit/Type.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace ConventionalChangelog\Commit;
+
+use ConventionalChangelog\Type\Stringable;
+
+class Type implements Stringable
+{
+    /**
+     * @var string
+     */
+    public $content;
+
+    public function __construct(string $content)
+    {
+        $this->content = strtolower($content);
+    }
+
+    public function __toString(): string
+    {
+        return $this->content;
+    }
+}

src/Type/Stringable.php

@@ -0,0 +1,13 @@
+<?php
+
+namespace ConventionalChangelog\Type;
+
+/**
+ * Convertible to string.
+ *
+ * @internal
+ */
+interface Stringable
+{
+    public function __toString(): string;
+}