Create GradleEscape extension for beeware#1876

src/briefcase/integrations/cookiecutter.py

@@ -77,6 +77,28 @@ def escape_non_ascii(obj):
         environment.filters["escape_non_ascii"] = escape_non_ascii
 
 
+class GradleEscape(Extension):
+    """Jinja2 extension to escape strings for Gradle as well."""
+
+    def __init__(self, environment):
+        """Initialize the extension with the given environment."""
+        super().__init__(environment)
+
+        def escape_gradle(obj):
+            """Escapes single quotes."""
+            return obj.replace("'", "")
+
+        def escape_non_ascii(obj):
+            """Quotes obj if non ascii characters are present."""
+            if obj.isascii():
+                return obj
+            else:
+                return '"' + obj + '"'
+
+        environment.filters["escape_gradle"] = escape_gradle
+        environment.filters["escape_non_ascii"] = escape_non_ascii
+
+
 class PListExtension(Extension):
     """Jinja2 extension for generating plist values."""
 

tests/integrations/cookiecutter/test_GradleEscape.py

@@ -0,0 +1,34 @@
+from unittest.mock import MagicMock
+
+import pytest
+
+from briefcase.integrations.cookiecutter import GradleEscape
+
+
+@pytest.mark.parametrize(
+    "value, expected",
+    [
+        ("Hello World", "Hello World"),
+        ("Hello ' World", "Hello \\' World"),
+        # ("Hello \\ World", "Hello \\\\ World"),
+    ],
+)
+def test_escape_gradle(value, expected):
+    env = MagicMock()
+    env.filters = {}
+    GradleEscape(env)
+    assert env.filters["escape_gradle"](value) == expected
+
+
+@pytest.mark.parametrize(
+    "value, expected",
+    [
+        ("helloworld", "helloworld"),
+        ("helloworldı", '"helloworldı"'),
+    ],
+)
+def test_escape_non_ascii(value, expected):
+    env = MagicMock()
+    env.filters = {}
+    GradleEscape(env)
+    assert env.filters["escape_non_ascii"](value) == expected