first commit.

packages/text/src/Libs/Filter.php

@@ -0,0 +1,69 @@
+<?php
+
+namespace Libs;
+
+/**
+ * Filter - DuckBrain
+ *
+ * Library for text filters.
+ *
+ * @author KJ
+ * @website https://kj2.me
+ * @licence MIT
+ */
+class Filter
+{
+    protected static array $filters = [];
+
+    /**
+     * Adds a filter.
+     *
+     * @param callable $filterCallback
+     *                                 Function that performs the filter, receives the content and returns it filtered.
+     * @param string   $context
+     *                                 Context of the filter.
+     * @param int      $priority
+     *                                 Priority of the filter, by default 10. Lower values are executed first.
+     *
+     * @return void
+     */
+    public static function add(callable $filterCallback, string $context = 'content', int $priority = 10): void
+    {
+        if (empty(static::$filters[$context])) {
+            static::$filters[$context] = [];
+        }
+
+        static::$filters[$context][] = [
+            'priority' => $priority,
+            'callback' => $filterCallback,
+        ];
+    }
+
+    /**
+     * Applies the configured filters.
+     *
+     * @param string $content
+     *                        Content to which the filter will be applied.
+     * @param string $context
+     *                        Context of the filter.
+     *
+     * @return string
+     */
+    public static function apply(string $content, string $context = 'content'): string
+    {
+        if (empty(static::$filters[$context])) {
+            return $content;
+        }
+
+        // Sort filters in ascending order according to their priority.
+        usort(static::$filters[$context], function ($a, $b) {
+            return $a['priority'] - $b['priority'];
+        });
+
+        foreach (static::$filters[$context] as $filter) {
+            $content = call_user_func($filter['callback'], $content);
+        }
+
+        return $content;
+    }
+}

packages/text/src/Libs/Replacement.php

@@ -0,0 +1,85 @@
+<?php
+
+namespace Libs;
+
+/**
+ * Replacement - DuckBrain
+ *
+ * Library for batch replacements using regex.
+ *
+ * @author KJ
+ * @website https://kj2.me
+ * @license MIT
+ */
+class Replacement
+{
+    protected static array $replace = [
+        'patern'      => [],
+        'replacement' => [],
+    ];
+    protected static array $replaceCallback = [];
+
+    /**
+     * Adds a replacement configuration.
+     *
+     * @param string $patern
+     *                       Replacement pattern (Regular expression).
+     *
+     * @param string|callable $replacementOrCallback
+     *                                               Replacement string or callback function for replacement.
+     *
+     * @return void
+     */
+    public static function add(string $patern, string|callable $replacementOrCallback): void
+    {
+        if (is_callable($replacementOrCallback)) {
+            static::$replaceCallback[$patern] = $replacementOrCallback;
+            return;
+        }
+
+        static::$replace['patern'][] = $patern;
+        static::$replace['replacement'][] = $replacementOrCallback;
+    }
+
+    /**
+     * Deletes a replacement configuration.
+     *
+     * @param string $patern
+     *                       Replacement pattern (Regular expression).
+     *
+     * @return void
+     */
+    public static function delete(string $patern): void
+    {
+        $index = array_search($patern, static::$replace['patern']);
+        if ($index !== false) {
+            unset(static::$replace['patern'][$index]);
+            unset(static::$replace['replacement'][$index]);
+        }
+        unset(static::$replaceCallback[$patern]);
+    }
+
+    /**
+     * Applies the configured replacements.
+     *
+     * @param string $content
+     *                        Content to which batch replacements will be applied.
+     *
+     * @return string
+     */
+    public static function apply(string $content): string
+    {
+        $content = preg_replace(
+            static::$replace['patern'],
+            static::$replace['replacement'],
+            $content
+        );
+
+        $content = preg_replace_callback_array(
+            static::$replaceCallback,
+            $content
+        );
+
+        return $content;
+    }
+}