refactor: allow whitespace, rename vars to replace

Taskfile.yml

@@ -19,9 +19,9 @@ tasks:
     env:
       TASK_CWD: '{{.cwd}}'
     cmds:
-      - composer run:task -q -- placeholder {{q .src}} {{q (toRawJson .vars)}}
+      - composer run:task -q -- placeholder {{q .src}} {{q (toRawJson .replace)}} {{if .ignore}}{{.ignore}}{{end}}
     requires:
-      vars: [src, vars]
+      vars: [src, replace]
     internal: true
 
   zip:

src/StringHelper.php

@@ -4,14 +4,10 @@
 
 class StringHelper
 {
-    public static function placeholder(string $data, array $vars): string
+    public static function placeholder(string $str, array $replace): string
     {
-        $replace = [];
+        $callback = fn($matches) => $replace[$matches[1]] ?? $matches[0];
 
-        foreach ($vars as $key => $value) {
-            $replace["{{ {$key} }}"] = $value;
-        }
-
-        return str_replace(array_keys($replace), array_values($replace), $data);
+        return preg_replace_callback('/{{\s*(\w+?)\s*}}/', $callback, $str);
     }
 }

src/TaskHelper.php

@@ -43,11 +43,11 @@ public function copy(string $src, string $dest, string $ignore = ''): void
             " to '{$dest}'\n";
     }
 
-    public function placeholder(string $src, string $vars): void
+    public function placeholder(string $src, string $replace, string $ignore = ''): void
     {
         $fs = new Filesystem();
-        $files = self::findFiles($this->cwd, $src);
-        $variables = json_decode($vars, true);
+        $files = self::findFiles($this->cwd, $src, $ignore);
+        $variables = json_decode($replace, true);
 
         foreach ($files as $file) {
             $fs->dumpFile($file->getPathname(), Str::placeholder($file->getContents(), $variables));