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107 lines
2.8 KiB
Python
107 lines
2.8 KiB
Python
import logging
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import re
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from dataclasses import dataclass
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from pathlib import Path
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import black
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import isort
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from jinja2 import Template
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from rich.logging import RichHandler
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FORMAT = "%(message)s"
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logging.basicConfig(level=logging.INFO, format=FORMAT, datefmt="[%X]", handlers=[RichHandler()])
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log = logging.getLogger("rich")
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def render_python_template(template_file: Path | str, dest: Path, data: dict):
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"""Render and Format a Jinja2 Template for Python Code"""
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if isinstance(template_file, Path):
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tplt = Template(template_file.read_text())
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else:
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tplt = Template(template_file)
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text = tplt.render(data=data)
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text = black.format_str(text, mode=black.FileMode())
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dest.write_text(text)
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isort.file(dest)
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@dataclass
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class CodeSlicer:
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start: int
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end: int
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indentation: str
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text: list[str]
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_next_line = None
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def purge_lines(self) -> None:
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start = self.start + 1
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end = self.end
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del self.text[start:end]
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def push_line(self, string: str) -> None:
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self._next_line = self._next_line or self.start + 1
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self.text.insert(self._next_line, self.indentation + string + "\n")
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self._next_line += 1
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def get_indentation_of_string(line: str, comment_char: str = "//") -> str:
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return re.sub(rf"{comment_char}.*", "", line).removesuffix("\n")
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def find_start_end(file_text: list[str], gen_id: str) -> tuple[int, int]:
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start = None
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end = None
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indentation = None
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for i, line in enumerate(file_text):
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if "CODE_GEN_ID:" in line and gen_id in line:
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start = i
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indentation = get_indentation_of_string(line)
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if f"END: {gen_id}" in line:
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end = i
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if start is None or end is None:
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raise Exception("Could not find start and end of code generation block")
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if start > end:
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raise Exception(f"Start ({start=}) of code generation block is after end ({end=})")
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return start, end, indentation
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def inject_inline(file_path: Path, key: str, code: list[str]) -> None:
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"""Injects a list of strings into the file where the key is found in the format defined
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by the code-generation. Strings are properly indented and a '\n' is added to the end of
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each string.
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Start -> 'CODE_GEN_ID: <key>'
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End -> 'END: <key>'
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If no 'CODE_GEN_ID: <key>' is found, and exception is raised
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Args:
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file_path (Path): Write to file
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key (str): CODE_GEN_ID: <key>
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code (list[str]): List of strings to inject.
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"""
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with open(file_path, "r") as f:
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file_text = f.readlines()
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start, end, indentation = find_start_end(file_text, key)
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slicer = CodeSlicer(start, end, indentation, file_text)
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slicer.purge_lines()
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for line in code:
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slicer.push_line(line)
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with open(file_path, "w") as file:
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file.writelines(slicer.text)
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