39 lines
1.3 KiB
Python
39 lines
1.3 KiB
Python
"""JSON -> PDF (pretty-printed, monospace).
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Validation is explicit (a JSON error is a *job* error with a clear message,
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not a render failure): whitespace-only input -> "empty JSON file: ...",
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unparseable input -> "Invalid JSON: <reason>". Valid documents are
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pretty-printed (indent=2, original key order) into <pre> with PRE_CSS so
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structure and indentation survive the render.
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"""
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from __future__ import annotations
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import json
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from pathlib import Path
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from . import common
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from .text_converter import decode_bytes
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def convert(path: Path, job_id: str, progress_cb=None, output_dir=None,
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source_name=None) -> str:
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"""Render a JSON file to a pretty-printed monospace PDF."""
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raw = path.read_bytes()
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if not raw.strip():
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raise ValueError("empty JSON file: nothing to convert")
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text = decode_bytes(raw)
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try:
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obj = json.loads(text)
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except json.JSONDecodeError as exc:
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raise ValueError(f"Invalid JSON: {exc}") from exc
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pretty = json.dumps(obj, indent=2, ensure_ascii=False)
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def _build():
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return f"<html><body><pre>{common.escape(pretty)}</pre></body></html>", path.name
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return common.convert_single(
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path, job_id, build_html=_build, css=common.PRE_CSS,
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progress_cb=progress_cb, output_dir=output_dir,
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name_src=source_name or path.name,
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)
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