122 lines
4.8 KiB
Markdown
122 lines
4.8 KiB
Markdown
# Systematic File Recovery for Lost Author Markers
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When intermediate files have been overwritten during iterative editing (e.g., multiple versions of a contract revision), and you need to find a specific version that contains tracked changes by a particular author (e.g., "华诚-Z"), use this systematic scan approach.
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## Scenario
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- You made multiple intermediate files (v1, v2, v3...) in `/tmp/` during contract editing
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- You overwrote files, losing the version with a specific author's tracked changes
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- You need to find ANY surviving file that still has that author's `w:author` attribute
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## Recovery Technique
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### Step 1: List all candidate files
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Find all `.docx` files in the working directory that are newer than the original source file:
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```bash
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find /tmp -name '*.docx' -newer /tmp/original_file.docx 2>/dev/null | sort
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```
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### Step 2: Check each file for the target author
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```python
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import zipfile, re, os
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from datetime import datetime
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target_author = '华诚-Z' # or whatever author you're looking for
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files = [
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"/tmp/v1_clean.docx",
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"/tmp/v1_final.docx",
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# ... list all candidate files from Step 1
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]
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for f in files:
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if not os.path.exists(f):
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continue
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try:
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z = zipfile.ZipFile(f)
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content = z.read('word/document.xml').decode('utf-8', 'ignore')
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authors = set(re.findall(r'w:author="([^"]+)"', content))
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mt = datetime.fromtimestamp(os.path.getmtime(f)).strftime('%m-%d %H:%M')
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has_target = target_author in authors
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marker = '★' if has_target else ' '
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print(f"{marker} {os.path.basename(f):35s} {mt} authors={sorted(authors)}")
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z.close()
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except Exception as e:
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print(f" ERROR {f}: {e}")
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```
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### Step 3: Extract the target author's changes
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Once you find the file with the target author, extract their specific tracked changes:
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```python
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WNS = '{http://schemas.openxmlformats.org/wordprocessingml/2006/main}'
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z = zipfile.ZipFile('/tmp/file_with_target_author.docx')
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with z.open('word/document.xml') as f:
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tree = etree.parse(f)
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root = tree.getroot()
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body = root.find(f'{WNS}body')
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paras = body.findall(f'{WNS}p')
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for i, p in enumerate(paras):
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has_target = False
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parts = []
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for child in p:
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tag = etree.QName(child.tag).localname
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if tag == 'r':
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t = child.find(f'{WNS}t')
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if t is not None and t.text:
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parts.append(('RUN', t.text, None))
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elif tag == 'ins':
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author = child.get(f'{WNS}author', '?')
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if target_author in author:
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has_target = True
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ins_texts = []
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for r in child.findall(f'{WNS}r'):
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t = r.find(f'{WNS}t')
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if t is not None and t.text:
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ins_texts.append(t.text)
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if ins_texts:
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parts.append(('INS', ''.join(ins_texts), author))
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elif tag == 'del':
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author = child.get(f'{WNS}author', '?')
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if target_author in author:
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has_target = True
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del_texts = []
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for r in child.findall(f'{WNS}r'):
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t = r.find(f'{WNS}delText')
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if t is not None and t.text:
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del_texts.append(t.text)
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if del_texts:
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parts.append(('DEL', ''.join(del_texts), author))
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if has_target:
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print(f"\n★ P{i}:")
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for kind, text, author in parts:
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if kind == 'RUN':
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print(f" [原文] {repr(text)}")
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else:
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print(f" [{kind} by {author}] {repr(text)}")
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z.close()
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```
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## Empirical Case (2026-07-01 反委托代发工资协议)
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- Made ~15 intermediate files in `/tmp/` during iterative editing
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- Overwrote all files, changing all `w:author` attributes to "WB"
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- User (Doro) demanded recovery of 华诚-Z's tracked changes
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- Systematic scan found `/tmp/v1_doro_updated.docx` with `authors=['WB', '华诚-Z']`
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- Extracted 华诚-Z's 3 specific changes:
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- P6: INS "等" (between WB's "《劳务派遣暂行规定》" and "规定，")
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- P12: INS "退回派遣员工" + INS "由乙方依法自行安置处理，与甲方无涉。"
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## Key Pitfalls
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1. **Don't assume the file is gone** — check ALL intermediate files, not just the ones you expect
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2. **Check timestamps** — the file you need might be an early intermediate, not the latest
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3. **Use `w:author` attribute** — this is the definitive marker, not file content or naming
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4. **Comments may also be lost** — the recovered file might have lost some original comments (see `references/comment-restoration-from-original.md`)
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## Prevention (Better Than Recovery)
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The existing skill already covers this, but worth repeating: **改前必备份** — before modifying any file with third-party tracked changes, save a timestamped backup:
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```bash
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cp file_with_third_party.docx file_with_third_party.bak_$(date +%Y%m%d_%H%M%S).docx
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```
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