Merge pull request #77 from moltam/feature/multiple-root-scan

Add multiple root directory scan

Author: lajax

Module.php

@@ -142,12 +142,20 @@ class Module extends \yii\base\Module {
     ];
 
     /**
-     * @var string the root directory of the scanning.
+     * @var string|array The root directory or directories of the scanning. The path can be an alias or
+     * a full path.
+     *
+     * It is possible to define one root directory as string. In this case the `scanRootParentDirectory` will be used
+     * when determining the actual directory to scan.
+     *
+     * Multiple root directories can be declared in an array. In this case all items must point to the exact directory,
+     * as `scanRootParentDirectory` **will be omitted**.
      */
     public $root = '@app';
 
     /**
-     * @var bool Whether scan the defined `root` parent directory, or the folder itself.
+     * @var bool Whether scan the defined `root` parent directory, or the folder itself. This option is used only,
+     * when the `root` option contains a single directory as string (e.g. `'root' => '@app'`).
      * 
      * <b>IMPORTANT</b>: Changing this from `true` to `false` could cause loss of translated items, as
      * optimize action removes the missing items.

README.md

@@ -122,27 +122,62 @@ A more complex example including database table with multilingual support is bel
 
 #### Configuring the scan root
 
+The root path can be an alias or a full path (e.g. `@app` or `/webroot/site/`).
+
 The file scanner will scan the configured folders for translatable elements. The following two options
 determine the scan root directory: `root`, and `scanRootParentDirectory`. These options are defaults to
-values that works with the Yii 2 advanced project template. If you are using basic template, you have to modify 
+values that works with the Yii 2 advanced project template. If you are using basic template, you have to modify
 these settings.
 
-The `root` options tells which is the root folder for project scan. However if `scanRootParentDirectory` is set to `true`
-(which is the default value), the scan will run on the parent directory. This is desired behavior on advanced template,
-because the `@app` is the root for the current app, which is a subfolder inside the project (so the entire root of the
-project is the parent directory of `@app`).
+The `root` options tells which is the root folder for project scan. It can contain a single directory (string),
+or multiple directories (in an array).
+
+The `scanRootParentDirectory` **is used only** if a single root directory is specified in a string.
+
+**IMPORTANT: Changing these options could cause loss of translated items,
+as optimize action removes the missing items.** So be sure to double check your configuration!
+
+**a)** Single root directory:
 
-For basic template the `@app` is also the root for the entire project. Because of this with the default value 
-of `scanRootParentDirectory`, the scan runs outside the project folder. This is not desired behavior, and 
+It is possible to define one root directory as string in the `root` option. In this case the `scanRootParentDirectory`
+will be used when determining the actual directory to scan.
+
+If `scanRootParentDirectory` is set to `true` (which is the default value), the scan will run on the parent directory.
+This is desired behavior on advanced template, because the `@app` is the root for the current app, which is a subfolder
+inside the project (so the entire root of the project is the parent directory of `@app`).
+
+For basic template the `@app` is also the root for the entire project. Because of this with the default value
+of `scanRootParentDirectory`, the scan runs outside the project folder. This is not desired behavior, and
 changing the value to `false` solves this.
 
-**IMPORTANT: Changing the `scanRootParentDirectory` from `true` to `false` could cause loss of translated items, 
-as optimize action removes the missing items.** Changing the root folder can cause also loss, so be sure to 
-double check your configuration!
+**IMPORTANT: Changing the `scanRootParentDirectory` from `true` to `false` could cause loss of translated items,
+as the root will be a different directory.**
+
+For example:
+
+| `root` value | `scanRootParentDirectory` value| Scanned directory |
+|---|---|---|
+| `/webroot/site/frontend` | `true` | `/webroot/site` |
+| `/webroot/site/frontend` | `false` | `/webroot/site/frontend` |
 
-Using of [authManager](http://www.yiiframework.com/doc-2.0/guide-security-authorization.html).
+**b)** Multiple root directories:
 
-examples:
+Multiple root directories can be defined in an array. In this case all items must point to the exact directory,
+as `scanRootParentDirectory` **will be omitted**.
+
+For example:
+
+```php
+'root' => [
+    '@frontend',
+    '@vendor',
+    '/some/external/folder',
+],
+```
+
+#### Using of [authManager](http://www.yiiframework.com/doc-2.0/guide-security-authorization.html)
+
+Examples:
 
 PhpManager:
 ```php
@@ -164,7 +199,7 @@ DbManager:
 ],
 ```
 
-Front end translation:
+#### Front end translation:
 
 ```php
 'bootstrap' => ['translatemanager'],
@@ -456,7 +491,9 @@ Use it with the Yii CLI
 Known issues
 -----------
 
-* Scanner is scanning parent root directory. [#12](https://github.com/lajax/yii2-translate-manager/pull/12)
+* Scanner is scanning parent root directory [#12](https://github.com/lajax/yii2-translate-manager/pull/12).
+
+  You can overwrite this behavior with the `scanRootParentDirectory` option. (See Config section for details.)
 * Frontend translation of strings in hidden tags corrupts HTML. [#45](https://github.com/lajax/yii2-translate-manager/issues/45)
 
 Screenshots

services/scanners/ScannerFile.php

@@ -5,6 +5,7 @@
 use Yii;
 use yii\helpers\Console;
 use yii\helpers\FileHelper;
+use yii\base\InvalidConfigException;
 use lajax\translatemanager\services\Scanner;
 
 /**
@@ -94,19 +95,33 @@ public function __construct(Scanner $scanner) {
     /**
      * @inheritdoc Initialise the $files static array.
      */
-    public function init() 
+    public function init()
     {
-        if (empty(self::$files[static::EXTENSION]) && in_array(static::EXTENSION, $this->module->patterns)) {
-            $root = realpath($this->_getRoot());
+        $this->initFiles();
+
+        parent::init();
+    }
+
+    protected function initFiles()
+    {
+        if (!empty(self::$files[static::EXTENSION]) || !in_array(static::EXTENSION, $this->module->patterns)) {
+            return;
+        }
+
+        self::$files[static::EXTENSION] = [];
+
+        foreach ($this->_getRoots() as $root) {
+            $root = realpath($root);
             Yii::trace("Scanning " . static::EXTENSION . " files for language elements in: $root", 'translatemanager');
-            
-            self::$files[static::EXTENSION] = FileHelper::findFiles($root, [
+
+            $files = FileHelper::findFiles($root, [
                 'except' => $this->module->ignoredItems,
                 'only' => [static::EXTENSION],
             ]);
+            self::$files[static::EXTENSION] = array_merge(self::$files[static::EXTENSION], $files);
         }
 
-        parent::init();
+        self::$files[static::EXTENSION] = array_unique(self::$files[static::EXTENSION]);
     }
 
     /**
@@ -215,17 +230,29 @@ protected function checkTokens($options, $translatorTokens, $tokens)
     abstract protected function getLanguageItem($buffer);
 
     /**
-     * Returns the root directory of the project scan.
-     * @return string
+     * Returns the root directories to scan.
+     * @return array
      */
-    private function _getRoot()
+    private function _getRoots()
     {
-        $root = Yii::getAlias($this->module->root);
-        if ($this->module->scanRootParentDirectory) {
-            $root = dirname($root);
+        $directories = [];
+
+        if (is_string($this->module->root)) {
+            $root = Yii::getAlias($this->module->root);
+            if ($this->module->scanRootParentDirectory) {
+                $root = dirname($root);
+            }
+
+            $directories[] = $root;
+        } elseif (is_array($this->module->root)) {
+            foreach ($this->module->root as $root) {
+                $directories[] = Yii::getAlias($root);
+            }
+        } else {
+            throw new InvalidConfigException("Invalid `root` option value!");
         }
-        
-        return $root;
+
+        return $directories;
     }
 
     /**