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fix: normalize MinerU 2.0 field names for backward compatibility (#89) #202

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Merged
LarFii merged 1 commit into from
Feb 20, 2026
Merged

fix: normalize MinerU 2.0 field names for backward compatibility (#89) #202

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19 changes: 19 additions & 0 deletions raganything/parser.py
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Original file line number Diff line number Diff line change
Expand Up @@ -856,6 +856,25 @@ def _read_output_files(
with open(json_file, "r", encoding="utf-8") as f:
content_list = json.load(f)

# Normalize MinerU 2.0 field names to expected names for backward compatibility.
# MinerU 2.0 renamed: img_caption -> image_caption, img_footnote -> image_footnote
# The codebase primarily uses image_caption/image_footnote with img_caption/img_footnote
# as fallback, but we ensure both fields exist so downstream code works regardless.
_FIELD_ALIASES = {
# MinerU 1.x name -> MinerU 2.0 name (canonical)
"img_caption": "image_caption",
"img_footnote": "image_footnote",
}
for item in content_list:
if isinstance(item, dict):
for old_name, new_name in _FIELD_ALIASES.items():
# If only the old field exists, copy it to the new field name
if old_name in item and new_name not in item:
item[new_name] = item[old_name]
# If only the new field exists, copy it to the old field name (for any legacy code)
elif new_name in item and old_name not in item:
item[old_name] = item[new_name]

# Always fix relative paths in content_list to absolute paths
cls.logger.info(
f"Fixing image paths in {json_file} with base directory: {images_base_dir}"
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