Bug 1752968 - Minify Fluent `.ftl` files in addition to `.properties` files. r=eemeli

Depends on D138365

Differential Revision: https://phabricator.services.mozilla.com/D138572

python/mozbuild/mozpack/files.py

@@ -773,10 +773,10 @@ class ManifestFile(BaseFile):
         return len(self._entries) + len(self._interfaces) == 0
 
 
-class MinifiedProperties(BaseFile):
+class MinifiedCommentStripped(BaseFile):
     """
-    File class for minified properties. This wraps around a BaseFile instance,
-    and removes lines starting with a # from its content.
+    File class for content minified by stripping comments. This wraps around a
+    BaseFile instance, and removes lines starting with a # from its content.
     """
 
     def __init__(self, file):
@@ -786,7 +786,7 @@ class MinifiedProperties(BaseFile):
     def open(self):
         """
         Return a file-like object allowing to read() the minified content of
-        the properties file.
+        the underlying file.
         """
         content = "".join(
             l
@@ -935,8 +935,8 @@ class BaseFinder(object):
         if not self._minify or isinstance(file, ExecutableFile):
             return file
 
-        if path.endswith(".properties"):
-            return MinifiedProperties(file)
+        if path.endswith((".ftl", ".properties")):
+            return MinifiedCommentStripped(file)
 
         if self._minify_js and path.endswith((".js", ".jsm")):
             return MinifiedJavaScript(file, self._minify_js_verify_command)

python/mozbuild/mozpack/test/test_files.py

@@ -30,7 +30,7 @@ from mozpack.files import (
     MercurialFile,
     MercurialRevisionFinder,
     MinifiedJavaScript,
-    MinifiedProperties,
+    MinifiedCommentStripped,
     PreprocessedFile,
 )
 
@@ -875,8 +875,8 @@ foo2_xpt = GeneratedFile(
 )
 
 
-class TestMinifiedProperties(TestWithTmpDir):
-    def test_minified_properties(self):
+class TestMinifiedCommentStripped(TestWithTmpDir):
+    def test_minified_comment_stripped(self):
         propLines = [
             "# Comments are removed",
             "foo = bar",
@@ -885,10 +885,10 @@ class TestMinifiedProperties(TestWithTmpDir):
         ]
         prop = GeneratedFile("\n".join(propLines))
         self.assertEqual(
-            MinifiedProperties(prop).open().readlines(), [b"foo = bar\n", b"\n"]
+            MinifiedCommentStripped(prop).open().readlines(), [b"foo = bar\n", b"\n"]
         )
         open(self.tmppath("prop"), "w").write("\n".join(propLines))
-        MinifiedProperties(File(self.tmppath("prop"))).copy(self.tmppath("prop2"))
+        MinifiedCommentStripped(File(self.tmppath("prop"))).copy(self.tmppath("prop2"))
         self.assertEqual(open(self.tmppath("prop2")).readlines(), ["foo = bar\n", "\n"])