feat: add toml support

tackle/exceptions.py

@@ -377,3 +377,20 @@ class MalformedFunctionFieldException(TackleFunctionCreateException):
 
     Happens when a tackle file is parsed.
     """
+
+
+class TackleGeneralException(Exception):
+    """Base hook call exception class."""
+
+    def __init__(self, message: str):
+        sys.tracebacklimit = 0
+        super().__init__(message)
+
+
+class TackleImportError(TackleGeneralException):
+    """
+    Exception when functions with field inputs of type dict are not formatted
+    appropriately.
+
+    Happens when a tackle file is parsed.
+    """

tackle/utils/files.py

@@ -5,7 +5,11 @@
 import os
 import logging
 
-from tackle.exceptions import ContextDecodingException, UnsupportedBaseFileTypeException
+from tackle.exceptions import (
+    ContextDecodingException,
+    UnsupportedBaseFileTypeException,
+    TackleImportError,
+)
 from tackle.utils.paths import make_sure_path_exists
 
 logger = logging.getLogger(__name__)
@@ -66,6 +70,18 @@ def read_config_file(file, file_extension=None):
                     for doc in yaml.load_all(f.read()):
                         output.append(doc)
                 return output
+        elif file_extension == 'toml':
+            try:
+                import toml
+            except ImportError:
+                raise TackleImportError(
+                    f"Error parsing {file} No toml package installed. Install it with "
+                    "`pip install toml` and try again."
+                ) from None
+            with open(file) as f:
+                data = toml.load(f)
+            return data
+
         else:
             raise UnsupportedBaseFileTypeException(
                 'Unable to parse file {}. Error: Unsupported extension (json/yaml only)'
@@ -75,11 +91,11 @@ def read_config_file(file, file_extension=None):
     except ValueError as e:
         # JSON decoding error.  Let's throw a new exception that is more
         # friendly for the developer or user.
-        our_exc_message = (
+        message = (
             f'JSON decoding error while loading "{file}".  Decoding'
             f' error details: "{str(e)}"'
         )
-        raise ContextDecodingException(our_exc_message)
+        raise ContextDecodingException(message) from None
 
 
 def apply_overwrites_to_inputs(input, overwrite_dict):

tackle/utils/paths.py

@@ -159,7 +159,7 @@ def is_directory_with_tackle(value) -> bool:
 def is_file(value) -> bool:
     """Return True if the input looks like a file."""
     FILE_REGEX = re.compile(
-        r"""^.*\.(yaml|yml|json)$""",
+        r"""^.*\.(yaml|yml|json|toml)$""",
         re.VERBOSE,
     )
     return bool(FILE_REGEX.match(value))

tests/parser/fixtures/toml.toml

@@ -0,0 +1,5 @@
+
+baz = "bar"
+
+[foo]
+"bar->" = "{{baz}}"

tests/parser/fixtures/toml.yaml

@@ -0,0 +1,5 @@
+
+baz: "bar"
+
+foo:
+  bar: bar

tests/parser/test_parser_parse_hook.py

@@ -22,6 +22,7 @@
     ('docker-compose.yml', 'docker-compose.yml'),
     ('list-list.yaml', 'list-list.yaml'),
     ('var-hook.yaml', 'var-hook-output.yaml'),
+    ('toml.toml', 'toml.yaml'),
     # # Broken
     # # TODO: https://github.com/robcxyz/tackle-box/issues/52
     # ('bug-mixed-flags.yaml', 'bug-mixed-flags.yaml'),