mealie/dev/code-generation/utils/template.py
2024-08-22 10:14:32 -05:00

110 lines
2.9 KiB
Python

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