1 files changed, 75 insertions, 0 deletions
diff --git a/mesonbuild/modules/keyval.py b/mesonbuild/modules/keyval.py
new file mode 100644
index 0000000..1ba2f1c
--- /dev/null
+++ b/mesonbuild/modules/keyval.py
@@ -0,0 +1,75 @@
+# Copyright 2017, 2019 The Meson development team
+
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+
+#     http://www.apache.org/licenses/LICENSE-2.0
+
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+from __future__ import annotations
+
+import os
+import typing as T
+
+from . import ExtensionModule, ModuleInfo
+from .. import mesonlib
+from ..interpreterbase import noKwargs, typed_pos_args
+
+if T.TYPE_CHECKING:
+    from ..interpreter import Interpreter
+    from . import ModuleState
+
+class KeyvalModule(ExtensionModule):
+
+    INFO = ModuleInfo('keyval', '0.55.0', stabilized='0.56.0')
+
+    def __init__(self, interp: 'Interpreter'):
+        super().__init__(interp)
+        self.methods.update({
+            'load': self.load,
+        })
+
+    @staticmethod
+    def _load_file(path_to_config: str) -> T.Dict[str, str]:
+        result: T.Dict[str, str] = {}
+        try:
+            with open(path_to_config, encoding='utf-8') as f:
+                for line in f:
+                    if '#' in line:
+                        comment_idx = line.index('#')
+                        line = line[:comment_idx]
+                    line = line.strip()
+                    try:
+                        name, val = line.split('=', 1)
+                    except ValueError:
+                        continue
+                    result[name.strip()] = val.strip()
+        except OSError as e:
+            raise mesonlib.MesonException(f'Failed to load {path_to_config}: {e}')
+
+        return result
+
+    @noKwargs
+    @typed_pos_args('keyval.laod', (str, mesonlib.File))
+    def load(self, state: 'ModuleState', args: T.Tuple['mesonlib.FileOrString'], kwargs: T.Dict[str, T.Any]) -> T.Dict[str, str]:
+        s = args[0]
+        is_built = False
+        if isinstance(s, mesonlib.File):
+            is_built = is_built or s.is_built
+            s = s.absolute_path(self.interpreter.environment.source_dir, self.interpreter.environment.build_dir)
+        else:
+            s = os.path.join(self.interpreter.environment.source_dir, s)
+
+        if not is_built:
+            self.interpreter.build_def_files.add(s)
+
+        return self._load_file(s)
+
+
+def initialize(interp: 'Interpreter') -> KeyvalModule:
+    return KeyvalModule(interp)