Set up and test out some stuff

evering/__main__.py

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+import argparse
+from pathlib import Path
+from typing import Union
+import logging
+
+from .colors import *
+
+logging.basicConfig(level=logging.DEBUG, style="{", format="{levelname:>7}: {message}")
+logger = logging.getLogger(__name__)
+
+
+
+
+def command_test_func(args):
+    logger.debug(styled("Debug", BLUE.fg, BOLD))
+    logger.info(styled("Info", GREEN.fg, BOLD))
+    logger.warning(styled("Warning", YELLOW.fg, BOLD))
+    logger.error(styled("Error", RED.fg, BOLD))
+    logger.info(styled("Test", BRIGHT_BLACK.fg, BOLD))
+
+
+
+
+
+
+
+
+
+
+
+
+def main():
+    parser = argparse.ArgumentParser()
+    parser.add_argument("-c", "--config-file")
+    subparsers = parser.add_subparsers(title="commands")
+
+    command_test = subparsers.add_parser("test")
+    command_test.set_defaults(func=command_test_func)
+    command_test.add_argument("some_file")
+
+    args = parser.parse_args()
+    if "func" in args:
+        args.func(args)
+    else:
+        parser.print_help()
+
+if __name__ == "__main__":
+    main()

evering/colors.py

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+"""
+This module includes functions to color the console output with ANSI
+escape sequences.
+"""
+
+from typing import Optional, Tuple
+from dataclasses import dataclass
+
+__all__ = [
+    "CSI", "ERASE_LINE",
+    "BOLD", "ITALIC", "UNDERLINE",
+    "Color",
+    "BLACK", "RED", "GREEN", "YELLOW", "BLUE", "MAGENTA", "CYAN", "WHITE", "BRIGHT_BLACK", "BRIGHT_RED", "BRIGHT_GREEN", "BRIGHT_YELLOW", "BRIGHT_BLUE", "BRIGHT_MAGENTA", "BRIGHT_CYAN", "BRIGHT_WHITE",
+    "style_sequence", "styled",
+]
+
+# ANSI escape sequences
+# See: https://en.wikipedia.org/wiki/ANSI_escape_code#CSI_sequences
+
+CSI = "\u001b["
+ERASE_LINE = f"{CSI}2K"
+
+# Styles
+
+BOLD = 1
+ITALIC = 3
+UNDERLINE = 4
+
+# Colors
+
+@dataclass
+class Color:
+    fg: int
+    bg: int
+
+BLACK = Color(30, 40)
+RED = Color(31, 41)
+GREEN = Color(32, 42)
+YELLOW = Color(33, 43)
+BLUE = Color(34, 44)
+MAGENTA = Color(35, 45)
+CYAN = Color(36, 46)
+WHITE = Color(37, 47)
+BRIGHT_BLACK = Color(90, 100)
+BRIGHT_RED = Color(91, 101)
+BRIGHT_GREEN = Color(92, 102)
+BRIGHT_YELLOW = Color(93, 103)
+BRIGHT_BLUE = Color(94, 104)
+BRIGHT_MAGENTA = Color(95, 105)
+BRIGHT_CYAN = Color(96, 106)
+BRIGHT_WHITE = Color(97, 107)
+
+def style_sequence(*args: int) -> str:
+    arglist = ";".join(str(arg) for arg in args)
+    return f"{CSI}{arglist}m"
+
+def styled(text: str, *args: int) -> str:
+    if args:
+        sequence = style_sequence(*args)
+        reset = style_sequence()
+        return f"{sequence}{text}{reset}"
+    else:
+        return text # No styling necessary

evering/config.py

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+"""
+This module contains helper functions for locating and loading config
+files.
+
+The result of loading a config file are the "local" variables,
+including the modules loaded via "import".
+"""
+
+from pathlib import Path
+
+__all__ = []
+
+DEFAULT_LOCATIONS = [
+    Path("~/.config/evering/config"),
+    Path("~/.evering/config"),
+    Path("~/.evering.conf"),
+]
+
+class LoadConfigException(Exception):
+    pass
+
+def load_config(path: Path = None) -> Dict[str, Any]:
+    if path is not None:
+        return load_config_file(path)
+    else:
+        for path in DEFAULT_LOCATIONS:
+            try:
+                return load_config_file(path)
+            except LoadConfigException:
+                # Try the next default location
+                # TODO print a log message
+                pass
+        else:
+            raise LoadConfigException("no config file found in any of the default locations")
+
+def load_config_file(path: Path) -> Dict[str, Any]:
+    try:
+        with open(path) as f:
+            l = {}
+            exec(f.read(), locals=l, globals={})
+            return l
+    except IOException as e:
+        raise LoadConfigException(str(e))

evering/eval.py

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+"""
+This module contains helper functions for evaluating python code and
+managing local variables.
+"""
+
+import copy
+import types
+from typing import Dict, Any
+
+__all__ = ["copy_local_variables"]
+
+def copy_local_variables(local: Dict[str, Any]) -> Dict[str, Any]:
+    local_copy = {}
+
+    for key, value in local:
+        if isinstance(value, types.ModuleType):
+            local_copy[key] = value
+        else:
+            local_copy[key] = copy.deepcopy(value)
+
+    return local_copy