[Translation] Add XLIFF 1 source to metadata to differentiate from attr

src/Symfony/Component/Translation/Loader/XliffFileLoader.php

@@ -105,6 +105,7 @@ class XliffFileLoader implements LoaderInterface
                 $catalogue->set((string) $source, $target, $domain);
 
                 $metadata = [
+                    'source' => (string) $translation->source,
                     'file' => [
                         'original' => (string) $fileAttributes['original'],
                     ],

src/Symfony/Component/Translation/Tests/Loader/XliffFileLoaderTest.php

@@ -86,6 +86,7 @@ class XliffFileLoaderTest extends TestCase
         $this->assertEquals(utf8_decode('bär'), $catalogue->get('foo', 'domain1'));
         $this->assertEquals(
             [
+                'source' => 'foo',
                 'notes' => [['content' => utf8_decode('bäz')]],
                 'id' => '1',
                 'file' => [
@@ -175,6 +176,7 @@ class XliffFileLoaderTest extends TestCase
 
         $this->assertEquals(
             [
+                'source' => 'foo',
                 'notes' => [['priority' => 1, 'content' => 'foo']],
                 'id' => '1',
                 'file' => [
@@ -186,6 +188,7 @@ class XliffFileLoaderTest extends TestCase
         // message without target
         $this->assertEquals(
             [
+                'source' => 'extrasource',
                 'notes' => [['content' => 'bar', 'from' => 'foo']],
                 'id' => '2',
                 'file' => [
@@ -197,6 +200,7 @@ class XliffFileLoaderTest extends TestCase
         // message with empty target
         $this->assertEquals(
             [
+                'source' => 'key',
                 'notes' => [
                     ['content' => 'baz'],
                     ['priority' => 2, 'from' => 'bar', 'content' => 'qux'],
@@ -304,6 +308,7 @@ class XliffFileLoaderTest extends TestCase
 
         $this->assertEquals(
             [
+                'source' => 'foo',
                 'id' => '1',
                 'file' => [
                     'original' => 'file.ext',
@@ -313,6 +318,7 @@ class XliffFileLoaderTest extends TestCase
         );
         $this->assertEquals(
             [
+                'source' => 'test',
                 'notes' => [['content' => 'note']],
                 'id' => '4',
                 'file' => [

src/Symfony/Component/Translation/Tests/fixtures/withnote.xlf

@@ -7,8 +7,8 @@
         <target>bar</target>
         <note priority="1">foo</note>
       </trans-unit>
-      <trans-unit id="2">
-        <source>extra</source>
+      <trans-unit id="2" resname="extra">
+        <source>extrasource</source>
         <note from="foo">bar</note>
       </trans-unit>
       <trans-unit id="123">