Commit 76e1a7c1 authored by myhloli's avatar myhloli
Browse files

refactor: enhance markdown generation by introducing pipeline_union_make and...

refactor: enhance markdown generation by introducing pipeline_union_make and improving latex delimiter handling
parent 9ded9e6b
import re
from loguru import logger
from mineru.backend.pipeline.config_reader import get_latex_delimiter_config
from mineru.backend.pipeline.para_split import ListLineTag
from mineru.utils.enum_class import BlockType, ContentType, MakeMode
from mineru.utils.language import detect_lang
def __is_hyphen_at_line_end(line):
"""Check if a line ends with one or more letters followed by a hyphen.
Args:
line (str): The line of text to check.
Returns:
bool: True if the line ends with one or more letters followed by a hyphen, False otherwise.
"""
# Use regex to check if the line ends with one or more letters followed by a hyphen
return bool(re.search(r'[A-Za-z]+-\s*$', line))
def ocr_mk_markdown_with_para_core_v2(paras_of_layout,
mode,
img_buket_path='',
):
page_markdown = []
for para_block in paras_of_layout:
para_text = ''
para_type = para_block['type']
if para_type in [BlockType.TEXT, BlockType.LIST, BlockType.INDEX]:
para_text = merge_para_with_text(para_block)
elif para_type == BlockType.TITLE:
title_level = get_title_level(para_block)
para_text = f'{"#" * title_level} {merge_para_with_text(para_block)}'
elif para_type == BlockType.INTERLINE_EQUATION:
para_text = merge_para_with_text(para_block)
elif para_type == BlockType.IMAGE:
if mode == 'nlp':
continue
elif mode == 'mm':
# 检测是否存在图片脚注
has_image_footnote = any(block['type'] == BlockType.IMAGE_FOOTNOTE for block in para_block['blocks'])
# 如果存在图片脚注,则将图片脚注拼接到图片正文后面
if has_image_footnote:
for block in para_block['blocks']: # 1st.拼image_caption
if block['type'] == BlockType.IMAGE_CAPTION:
para_text += merge_para_with_text(block) + ' \n'
for block in para_block['blocks']: # 2nd.拼image_body
if block['type'] == BlockType.IMAGE_BODY:
for line in block['lines']:
for span in line['spans']:
if span['type'] == ContentType.IMAGE:
if span.get('image_path', ''):
para_text += f"![]({img_buket_path}/{span['image_path']})"
for block in para_block['blocks']: # 3rd.拼image_footnote
if block['type'] == BlockType.IMAGE_FOOTNOTE:
para_text += ' \n' + merge_para_with_text(block)
else:
for block in para_block['blocks']: # 1st.拼image_body
if block['type'] == BlockType.IMAGE_BODY:
for line in block['lines']:
for span in line['spans']:
if span['type'] == ContentType.IMAGE:
if span.get('image_path', ''):
para_text += f"![]({img_buket_path}/{span['image_path']})"
for block in para_block['blocks']: # 2nd.拼image_caption
if block['type'] == BlockType.IMAGE_CAPTION:
para_text += ' \n' + merge_para_with_text(block)
elif para_type == BlockType.TABLE:
if mode == 'nlp':
continue
elif mode == 'mm':
for block in para_block['blocks']: # 1st.拼table_caption
if block['type'] == BlockType.TABLE_CAPTION:
para_text += merge_para_with_text(block) + ' \n'
for block in para_block['blocks']: # 2nd.拼table_body
if block['type'] == BlockType.TABLE_BODY:
for line in block['lines']:
for span in line['spans']:
if span['type'] == ContentType.TABLE:
# if processed by table model
if span.get('html', ''):
para_text += f"\n{span['html']}\n"
elif span.get('image_path', ''):
para_text += f"![]({img_buket_path}/{span['image_path']})"
for block in para_block['blocks']: # 3rd.拼table_footnote
if block['type'] == BlockType.TABLE_FOOTNOTE:
para_text += '\n' + merge_para_with_text(block) + ' '
if para_text.strip() == '':
continue
else:
# page_markdown.append(para_text.strip() + ' ')
page_markdown.append(para_text.strip())
return page_markdown
def full_to_half(text: str) -> str:
"""Convert full-width characters to half-width characters using code point manipulation.
Args:
text: String containing full-width characters
Returns:
String with full-width characters converted to half-width
"""
result = []
for char in text:
code = ord(char)
# Full-width letters and numbers (FF21-FF3A for A-Z, FF41-FF5A for a-z, FF10-FF19 for 0-9)
if (0xFF21 <= code <= 0xFF3A) or (0xFF41 <= code <= 0xFF5A) or (0xFF10 <= code <= 0xFF19):
result.append(chr(code - 0xFEE0)) # Shift to ASCII range
else:
result.append(char)
return ''.join(result)
latex_delimiters_config = get_latex_delimiter_config()
default_delimiters = {
'display': {'left': '$$', 'right': '$$'},
'inline': {'left': '$', 'right': '$'}
}
delimiters = latex_delimiters_config if latex_delimiters_config else default_delimiters
display_left_delimiter = delimiters['display']['left']
display_right_delimiter = delimiters['display']['right']
inline_left_delimiter = delimiters['inline']['left']
inline_right_delimiter = delimiters['inline']['right']
def merge_para_with_text(para_block):
block_text = ''
for line in para_block['lines']:
for span in line['spans']:
if span['type'] in [ContentType.TEXT]:
span['content'] = full_to_half(span['content'])
block_text += span['content']
block_lang = detect_lang(block_text)
para_text = ''
for i, line in enumerate(para_block['lines']):
if i >= 1 and line.get(ListLineTag.IS_LIST_START_LINE, False):
para_text += ' \n'
for j, span in enumerate(line['spans']):
span_type = span['type']
content = ''
if span_type == ContentType.TEXT:
content = ocr_escape_special_markdown_char(span['content'])
elif span_type == ContentType.INLINE_EQUATION:
content = f"{inline_left_delimiter}{span['content']}{inline_right_delimiter}"
elif span_type == ContentType.INTERLINE_EQUATION:
content = f"\n{display_left_delimiter}\n{span['content']}\n{display_right_delimiter}\n"
content = content.strip()
if content:
langs = ['zh', 'ja', 'ko']
# logger.info(f'block_lang: {block_lang}, content: {content}')
if block_lang in langs: # 中文/日语/韩文语境下,换行不需要空格分隔,但是如果是行内公式结尾,还是要加空格
if j == len(line['spans']) - 1 and span_type not in [ContentType.INLINE_EQUATION]:
para_text += content
else:
para_text += f'{content} '
else:
if span_type in [ContentType.TEXT, ContentType.INLINE_EQUATION]:
# 如果span是line的最后一个且末尾带有-连字符,那么末尾不应该加空格,同时应该把-删除
if j == len(line['spans'])-1 and span_type == ContentType.TEXT and __is_hyphen_at_line_end(content):
para_text += content[:-1]
else: # 西方文本语境下 content间需要空格分隔
para_text += f'{content} '
elif span_type == ContentType.INTERLINE_EQUATION:
para_text += content
else:
continue
return para_text
def para_to_standard_format_v2(para_block, img_buket_path, page_idx):
para_type = para_block['type']
para_content = {}
if para_type in [BlockType.TEXT, BlockType.LIST, BlockType.INDEX]:
para_content = {
'type': 'text',
'text': merge_para_with_text(para_block),
}
elif para_type == BlockType.TITLE:
para_content = {
'type': 'text',
'text': merge_para_with_text(para_block),
}
title_level = get_title_level(para_block)
if title_level != 0:
para_content['text_level'] = title_level
elif para_type == BlockType.INTERLINE_EQUATION:
para_content = {
'type': 'equation',
'text': merge_para_with_text(para_block),
'text_format': 'latex',
}
elif para_type == BlockType.IMAGE:
para_content = {'type': 'image', 'img_path': '', 'img_caption': [], 'img_footnote': []}
for block in para_block['blocks']:
if block['type'] == BlockType.IMAGE_BODY:
for line in block['lines']:
for span in line['spans']:
if span['type'] == ContentType.IMAGE:
if span.get('image_path', ''):
para_content['img_path'] = f"{img_buket_path}/{span['image_path']}"
if block['type'] == BlockType.IMAGE_CAPTION:
para_content['img_caption'].append(merge_para_with_text(block))
if block['type'] == BlockType.IMAGE_FOOTNOTE:
para_content['img_footnote'].append(merge_para_with_text(block))
elif para_type == BlockType.TABLE:
para_content = {'type': 'table', 'img_path': '', 'table_caption': [], 'table_footnote': []}
for block in para_block['blocks']:
if block['type'] == BlockType.TABLE_BODY:
for line in block['lines']:
for span in line['spans']:
if span['type'] == ContentType.TABLE:
if span.get('latex', ''):
para_content['table_body'] = f"{span['latex']}"
elif span.get('html', ''):
para_content['table_body'] = f"{span['html']}"
if span.get('image_path', ''):
para_content['img_path'] = f"{img_buket_path}/{span['image_path']}"
if block['type'] == BlockType.TABLE_CAPTION:
para_content['table_caption'].append(merge_para_with_text(block))
if block['type'] == BlockType.TABLE_FOOTNOTE:
para_content['table_footnote'].append(merge_para_with_text(block))
para_content['page_idx'] = page_idx
return para_content
def union_make(pdf_info_dict: list,
make_mode: str,
img_buket_path: str = '',
):
output_content = []
for page_info in pdf_info_dict:
paras_of_layout = page_info.get('para_blocks')
page_idx = page_info.get('page_idx')
if not paras_of_layout:
continue
if make_mode == MakeMode.MM_MD:
page_markdown = ocr_mk_markdown_with_para_core_v2(paras_of_layout, 'mm', img_buket_path)
output_content.extend(page_markdown)
elif make_mode == MakeMode.NLP_MD:
page_markdown = ocr_mk_markdown_with_para_core_v2(paras_of_layout, 'nlp')
output_content.extend(page_markdown)
elif make_mode == MakeMode.STANDARD_FORMAT:
for para_block in paras_of_layout:
para_content = para_to_standard_format_v2(para_block, img_buket_path, page_idx)
output_content.append(para_content)
if make_mode in [MakeMode.MM_MD, MakeMode.NLP_MD]:
return '\n\n'.join(output_content)
elif make_mode == MakeMode.STANDARD_FORMAT:
return output_content
else:
logger.error(f"Unsupported make mode: {make_mode}")
return None
def get_title_level(block):
title_level = block.get('level', 1)
if title_level > 4:
title_level = 4
elif title_level < 1:
title_level = 0
return title_level
def ocr_escape_special_markdown_char(content):
"""
转义正文里对markdown语法有特殊意义的字符
"""
special_chars = ["*", "`", "~", "$"]
for char in special_chars:
content = content.replace(char, "\\" + char)
return content
\ No newline at end of file
......@@ -114,4 +114,14 @@ def get_formula_config():
logger.warning(f"'formula-config' not found in {CONFIG_FILE_NAME}, use 'True' as default")
return json.loads(f'{{"enable": true}}')
else:
return formula_config
\ No newline at end of file
return formula_config
def get_latex_delimiter_config():
config = read_config()
latex_delimiter_config = config.get('latex-delimiter-config')
if latex_delimiter_config is None:
logger.warning(f"'latex-delimiter-config' not found in {CONFIG_FILE_NAME}, use 'None' as default")
return None
else:
return latex_delimiter_config
\ No newline at end of file
......@@ -8,6 +8,7 @@ from pathlib import Path
import pypdfium2 as pdfium
from loguru import logger
from mineru.api.pipeline_middle_json_mkcontent import union_make as pipeline_union_make
from mineru.backend.pipeline.model_json_to_middle_json import result_to_middle_json as pipeline_result_to_middle_json
from mineru.api.vlm_middle_json_mkcontent import union_make as vlm_union_make
from mineru.backend.vlm.vlm_analyze import doc_analyze as vlm_doc_analyze
......@@ -125,21 +126,21 @@ def do_parse(
pdf_bytes,
)
# if f_dump_md:
# image_dir = str(os.path.basename(local_image_dir))
# md_content_str = union_make(pdf_info, f_make_md_mode, image_dir)
# md_writer.write_string(
# f"{pdf_file_name}.md",
# md_content_str,
# )
# if f_dump_content_list:
# image_dir = str(os.path.basename(local_image_dir))
# content_list = union_make(pdf_info, MakeMode.STANDARD_FORMAT, image_dir)
# md_writer.write_string(
# f"{pdf_file_name}_content_list.json",
# json.dumps(content_list, ensure_ascii=False, indent=4),
# )
if f_dump_md:
image_dir = str(os.path.basename(local_image_dir))
md_content_str = pipeline_union_make(pdf_info, f_make_md_mode, image_dir)
md_writer.write_string(
f"{pdf_file_name}.md",
md_content_str,
)
if f_dump_content_list:
image_dir = str(os.path.basename(local_image_dir))
content_list = pipeline_union_make(pdf_info, MakeMode.STANDARD_FORMAT, image_dir)
md_writer.write_string(
f"{pdf_file_name}_content_list.json",
json.dumps(content_list, ensure_ascii=False, indent=4),
)
if f_dump_middle_json:
md_writer.write_string(
......
......@@ -107,6 +107,8 @@ def txt_spans_extract(pdf_page, spans, pil_img, scale):
cropbox = pdf_page.get_cropbox()
need_ocr_spans = []
for span in spans:
if span['type'] in [ContentType.INTERLINE_EQUATION, ContentType.IMAGE, ContentType.TABLE]:
continue
span_bbox = span['bbox']
rect_box = [span_bbox[0] + cropbox[0],
height - span_bbox[3] + cropbox[1],
......
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