Add formatters, utils, schemas and version

configforge/utils/file_parser.py

@@ -0,0 +1,147 @@
+"""File parsing utilities for ConfigForge."""
+
+import os
+from pathlib import Path
+from typing import Any, Optional
+
+from configforge.exceptions import (
+    ConversionError,
+    FileOperationError,
+    InvalidConfigFormatError,
+)
+
+
+SUPPORTED_FORMATS = ["json", "yaml", "yml", "toml", "env", "ini"]
+
+
+def detect_format(filepath: str) -> str:
+    """Detect the format of a configuration file based on its extension."""
+    ext = Path(filepath).suffix.lower()
+
+    format_mapping = {
+        ".json": "json",
+        ".yaml": "yaml",
+        ".yml": "yaml",
+        ".toml": "toml",
+        ".env": "env",
+        ".ini": "ini",
+    }
+
+    if ext not in format_mapping:
+        raise InvalidConfigFormatError(
+            f"Unsupported file format: {ext}. Supported formats: {', '.join(SUPPORTED_FORMATS)}"
+        )
+
+    return format_mapping[ext]
+
+
+class FileParser:
+    """Parser for configuration files in various formats."""
+
+    @staticmethod
+    def parse(filepath: str) -> dict:
+        """Parse a configuration file and return its contents as a dictionary."""
+        try:
+            format_type = detect_format(filepath)
+            parser_method = getattr(FileParser, f"_parse_{format_type}", None)
+
+            if parser_method is None:
+                raise InvalidConfigFormatError(f"No parser available for format: {format_type}")
+
+            with open(filepath, "r", encoding="utf-8") as f:
+                content = f.read()
+
+            return parser_method(content, filepath)
+
+        except FileNotFoundError:
+            raise FileOperationError(f"File not found: {filepath}", filepath=filepath)
+        except PermissionError:
+            raise FileOperationError(f"Permission denied: {filepath}", filepath=filepath)
+        except Exception as e:
+            if isinstance(e, (InvalidConfigFormatError, FileOperationError, ConversionError)):
+                raise
+            raise ConversionError(f"Failed to parse {filepath}: {str(e)}") from e
+
+    @staticmethod
+    def _parse_json(content: str, filepath: str) -> dict:
+        """Parse JSON configuration file."""
+        import json
+
+        try:
+            return json.loads(content)
+        except json.JSONDecodeError as e:
+            raise ConversionError(f"Invalid JSON in {filepath}: {str(e)}") from e
+
+    @staticmethod
+    def _parse_yaml(content: str, filepath: str) -> dict:
+        """Parse YAML configuration file."""
+        import yaml
+
+        try:
+            return yaml.safe_load(content) or {}
+        except yaml.YAMLError as e:
+            raise ConversionError(f"Invalid YAML in {filepath}: {str(e)}") from e
+
+    @staticmethod
+    def _parse_toml(content: str, filepath: str) -> dict:
+        """Parse TOML configuration file."""
+        import tomlkit
+
+        try:
+            return tomlkit.loads(content)
+        except tomlkit.exceptions.ParseError as e:
+            raise ConversionError(f"Invalid TOML in {filepath}: {str(e)}") from e
+
+    @staticmethod
+    def _parse_env(content: str, filepath: str) -> dict:
+        """Parse ENV configuration file."""
+        result = {}
+        for line_num, line in enumerate(content.splitlines(), 1):
+            line = line.strip()
+            if not line or line.startswith("#"):
+                continue
+
+            if "=" in line:
+                key, _, value = line.partition("=")
+                key = key.strip()
+                value = value.strip()
+
+                if not key:
+                    continue
+
+                value = value.strip('"').strip("'")
+                result[key] = value
+
+        return result
+
+    @staticmethod
+    def _parse_ini(content: str, filepath: str) -> dict:
+        """Parse INI configuration file."""
+        result = {}
+        current_section = "default"
+
+        for line_num, line in enumerate(content.splitlines(), 1):
+            line = line.strip()
+            if not line or line.startswith("#") or line.startswith(";"):
+                continue
+
+            if line.startswith("[") and line.endswith("]"):
+                current_section = line[1:-1].strip()
+                if current_section not in result:
+                    result[current_section] = {}
+            elif "=" in line:
+                key, _, value = line.partition("=")
+                key = key.strip()
+                value = value.strip()
+
+                if current_section == "default":
+                    result[key] = value
+                else:
+                    result[current_section][key] = value
+
+        return result
+
+
+def parse_file(filepath: str) -> dict:
+    """Parse a configuration file and return its contents as a dictionary."""
+    return FileParser.parse(filepath)