106 lines
3.1 KiB
Python
106 lines
3.1 KiB
Python
"""
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asset:// 与旧占位符清理。
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迁移与渲染共用：从正文移除 {{IMAGE:...}} / {{{{IMAGE:...}}}}。
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"""
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import re
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from typing import Callable
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_PLACEHOLDER_RE = re.compile(
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r"\{\{\{\{IMAGE:(.*?)\}\}\}\}|\{\{IMAGE:(.*?)\}\}",
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re.DOTALL,
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)
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_ASSET_REF_RE = re.compile(r"!\[([^\]]*)\]\(asset://([a-zA-Z0-9_-]+)\)")
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def strip_legacy_image_placeholders(text: str | None) -> str:
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"""移除正文中的旧 IMAGE 占位符，保留其余 markdown。"""
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if not text:
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return ""
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return _PLACEHOLDER_RE.sub("", text).strip()
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def parse_asset_refs(markdown: str) -> list[tuple[int, int, str, str]]:
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refs = []
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for m in _ASSET_REF_RE.finditer(markdown or ""):
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refs.append((m.start(), m.end(), m.group(1) or "", m.group(2) or ""))
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return refs
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def collect_asset_ids_from_markdown(markdown: str) -> list[str]:
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return [m.group(2) for m in _ASSET_REF_RE.finditer(markdown or "") if m.group(2)]
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def collect_asset_ids_for_chapter(chapter) -> set[str]:
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"""章节正文 canonical、收录的各 story 正文、cover_asset_id 中的 asset id。"""
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ids: set[str] = set()
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md = getattr(chapter, "canonical_markdown", None) or ""
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ids.update(collect_asset_ids_from_markdown(md))
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cid = getattr(chapter, "cover_asset_id", None)
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if cid:
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ids.add(str(cid))
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for link in getattr(chapter, "story_links", None) or []:
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st = getattr(link, "story", None)
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if st is None:
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continue
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smd = getattr(st, "canonical_markdown", None) or ""
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ids.update(collect_asset_ids_from_markdown(smd))
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return ids
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def collect_asset_ids_for_chapters(chapters: list) -> set[str]:
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combined: set[str] = set()
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for ch in chapters or []:
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combined |= collect_asset_ids_for_chapter(ch)
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return combined
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def split_markdown_by_asset_refs(
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markdown: str,
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resolve_asset: Callable[[str], str | None],
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) -> list[dict]:
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blocks: list[dict] = []
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refs = parse_asset_refs(markdown or "")
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if not refs:
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text = (markdown or "").strip()
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if text:
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blocks.append({"type": "text", "value": text})
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return blocks
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pos = 0
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for start, end, caption, asset_id in refs:
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if start > pos:
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text = markdown[pos:start].strip()
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if text:
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blocks.append({"type": "text", "value": text})
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url = resolve_asset(asset_id) if asset_id else None
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if url:
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blocks.append({"type": "image", "url": url, "caption": caption})
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pos = end
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if pos < len(markdown or ""):
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text = markdown[pos:].strip()
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if text:
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blocks.append({"type": "text", "value": text})
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return blocks
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def resolve_asset_refs_in_markdown(
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markdown: str,
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resolve_asset: Callable[[str], str | None],
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) -> str:
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if not markdown or not resolve_asset:
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return markdown or ""
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def repl(m):
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caption, asset_id = m.group(1) or "", m.group(2) or ""
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url = resolve_asset(asset_id) if asset_id else None
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if url:
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return f""
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return m.group(0)
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return _ASSET_REF_RE.sub(repl, markdown)
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