### What problem does this PR solve?
Fix regex pattern validation in split_with_pattern (#12605)
- Add try-except block to validate user-provided regex patterns before
use
- Gracefully fallback to single chunk when invalid regex is provided
- Prevent server crash during DOCX parsing with malformed delimiters
## Problem
Parsing DOCX files with custom regex delimiters crashes with `re.error:
nothing to repeat at position 9` when users provide invalid regex
patterns.
Closes#12605
## Solution
Validate and compile regex pattern before use. On invalid pattern, log
warning and return content as single chunk instead of crashing.
## Changes
- `rag/nlp/__init__.py`: Add regex validation in `split_with_pattern()`
function
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
Contribution by Gittensor, see my contribution statistics at
https://gittensor.io/miners/details?githubId=42954461
### What problem does this PR solve?
Feat: support context window for docx
#12303
Done:
- [x] naive.py
- [x] one.py
TODO:
- [ ] book.py
- [ ] manual.py
Fix: incorrect image position
Fix: incorrect chunk type tag
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
PDF vision figure parser supports reading context.
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Improve image table context.
Current strategy in attach_media_context:
- Order by position when possible: if any chunk has page/position info,
sort by (page, top, left), otherwise keep original order.
- Apply only to media chunks: images use image_context_size, tables use
table_context_size.
- Primary matching: on the same page, choose a text chunk whose vertical
span overlaps the media, then pick the one with the closest vertical
midpoint.
- Fallback matching: if no overlap on that page, choose the nearest text
chunk on the same page (page-head uses the next text; page-tail uses the
previous text).
- Context extraction: inside the chosen text chunk, find a mid-sentence
boundary near the text midpoint, then take context_size tokens split
before/after (total budget).
- No multi-chunk stitching: context comes from a single text chunk to
avoid mixing unrelated segments.
### Type of change
- [x] Refactoring
---------
Co-authored-by: Kevin Hu <kevinhu.sh@gmail.com>
### What problem does this PR solve?
- Original rag/nlp/rag_tokenizer.py is put to Infinity and infinity-sdk
via https://github.com/infiniflow/infinity/pull/3117 .
Import rag_tokenizer from infinity and inherit from
rag_tokenizer.RagTokenizer in new rag/nlp/rag_tokenizer.py.
- Bump infinity to 0.6.8
### Type of change
- [x] Refactoring
### What problem does this PR solve?
Ignore chunk size when using custom delimiter.
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Fix: concat images in word document. Partially solved issues in #11063
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
Add tree_merge for law parsers, significantly outperforming
hierarchical_merge, solved: #8637
1. Add tree_merge for law parsers, include build_tree and get_tree by
dfs.
2. add Copyright statement for helath_utils
### Type of change
- [x] Documentation Update
- [x] Performance Improvement
### What problem does this PR solve?
Dataflow supports Spreadsheet and Word processor document
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
#9082#6365
<u> **WARNING: it's not compatible with the older version of `Agent`
module, which means that `Agent` from older versions can not work
anymore.**</u>
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Fixes no chunks parsed out for Law. #5113
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
Fix unnecessary truncation in markdown parser. So that markdown can work
perfectly like
[this](https://github.com/infiniflow/ragflow/issues/7824#issuecomment-2921312576)
in #7824, supporting multiple special delimiters.
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
Add advanced delimiter detection for naive merge. #7824
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
This small PR resolves the regex library warnings showing in Python3.11:
```python
DeprecationWarning: 'count' is passed as positional argument
```
### Type of change
- [ ] Bug Fix (non-breaking change which fixes an issue)
- [ ] New Feature (non-breaking change which adds functionality)
- [ ] Documentation Update
- [x] Refactoring
- [ ] Performance Improvement
- [ ] Other (please describe):
Signed-off-by: Emmanuel Ferdman <emmanuelferdman@gmail.com>
### What problem does this PR solve?
https://github.com/infiniflow/ragflow/issues/6984
1. Markdown parser supports get pictures
2. For Native, when handling Markdown, it will handle images
3. improve merge and
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
---------
Co-authored-by: Kevin Hu <kevinhu.sh@gmail.com>
### What problem does this PR solve?
Fix hierarchical_merge function. From idx vs. actual value to actual
value vs. actual value.
Related issue #4003
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
Co-authored-by: luopan <luopan@example.com>
### What problem does this PR solve?
Rename page_num_list, top_list, position_list to page_num_int, top_int,
position_int
### Type of change
- [x] Refactoring
