add optional fixed replacement length

CHANGELOG.md

@@ -4,8 +4,11 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [Unreleased](https://git.d3data.de/D3Public/sensitiveMessageFormatter/compare/1.0.1...rel_1.x)
+## [Unreleased](https://git.d3data.de/D3Public/sensitiveMessageFormatter/compare/1.1.0...rel_1.x)
 
+## [1.1.0](https://git.d3data.de/D3Public/sensitiveMessageFormatter/compare/1.0.1...1.1.0) - 2025-01-07
+### Added
+- optional fixed length replacement
 
 ## [1.0.1](https://git.d3data.de/D3Public/sensitiveMessageFormatter/compare/1.0.0...1.0.1) - 2025-01-01
 ### Changed

src/sensitiveMessageFormatter.php

@@ -32,7 +32,8 @@ class sensitiveMessageFormatter extends MessageFormatter
     public function __construct(
         ?string $template = self::CLF,
         protected array $anonymizations = [],
-        protected ?string $replaceChar = null
+        protected ?string $replaceChar = null,
+        protected ?int $fixedReplacementLength = null
     ) {
         $this->createReplacements($this->anonymizations);
 
@@ -51,8 +52,14 @@ class sensitiveMessageFormatter extends MessageFormatter
 
         array_map(
             function ($search) use (&$replacements) {
-                $replacements[$search] = str_repeat($this->replaceChar ?? '*', strlen($search));
-                $replacements[urlencode($search)] = str_repeat($this->replaceChar ?? '*', strlen($search));
+                $replacements[$search] = str_repeat(
+                    $this->replaceChar ?? '*', 
+                    $this->fixedReplacementLength ?? strlen($search)
+                );
+                $replacements[urlencode($search)] = str_repeat(
+                    $this->replaceChar ?? '*', 
+                    $this->fixedReplacementLength ?? strlen($search)
+                );
             },
             $search
         );

tests/sensitiveMessageFormatterTest.php

@@ -69,7 +69,12 @@ class sensitiveMessageFormatterTest extends ApiTestCase
      * @dataProvider createReplacementsDataProvider
      * @covers       \D3\SensitiveMessageFormatter\sensitiveMessageFormatter::createReplacements
      */
-    public function testCreateReplacements(array $input, array $expected, ?string $replacement = null): void
+    public function testCreateReplacements(
+        array $input,
+        array $expected,
+        ?string $replacement = null,
+        ?int $fixedReplacementLenth = null
+    ): void
     {
         if ($replacement) {
             $this->setValue(
@@ -100,6 +105,7 @@ class sensitiveMessageFormatterTest extends ApiTestCase
         yield 'multiple' => [['def', 'def'], ['def' => '***']];
         yield 'urlencoded' => [['1&c'], ['1&c' => '***', '1%26c' => '***' ]];
         yield 'different replace char' => [['abcd'], ['abcd' => '####'], '#'];
+        yield 'fixed replacement lenght' => [['abcd'], ['abcd' => '*******'], '*', 7];
     }
 
     /**