Function findLocalMemoryEntryDraftRange

packages/core/src/local-memory.ts:554–600

(
  input: string,
  entryId: string,
)

}

export function findLocalMemoryEntryDraftRange(
  input: string,
  entryId: string,
): LocalMemoryEntryDraftRange | null {
  const id = entryId.trim();
  if (!id) return null;

  const lines = input.split(/\r?\n/);
  const lineStarts: number[] = [];
  let offset = 0;
  for (let index = 0; index < lines.length; index += 1) {
    lineStarts[index] = offset;
    offset += (lines[index] ?? '').length;
    if (index < lines.length - 1) {
      offset += input[offset] === '\r' && input[offset + 1] === '\n' ? 2 : 1;
    }
  }
  lineStarts[lines.length] = input.length;

  let current: { title: string; headingLineIndex: number; meta?: Record<string, string> } | null =
    null;

  const matchCurrent = (endLineIndex: number): LocalMemoryEntryDraftRange | null => {
    if (!current) return null;
    const currentId = current.meta?.id ?? slugId(current.title);
    if (currentId !== id) return null;
    return {
      start: lineStarts[current.headingLineIndex] ?? 0,
      end: lineStarts[endLineIndex] ?? input.length,
    };
  };

  for (let index = 0; index < lines.length; index += 1) {
    const line = lines[index] ?? '';
    const heading = /^##\s+(.+?)\s*$/.exec(line);
    if (heading) {
      const matched = matchCurrent(index);
      if (matched) return matched;
      current = { title: heading[1] ?? '未命名记忆', headingLineIndex: index };
      continue;
    }
    if (!current || current.meta) continue;
    const meta = parseMetaComment(line);
    if (meta) current.meta = meta;
  }
  return matchCurrent(lines.length);
}

export function findLocalMemoryEntryDraft(
  input: string,