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https://github.com/Tencent/WeKnora.git
synced 2025-11-25 19:37:45 +08:00
feat: 新增MarkdownTableUtil，减少md表格空格
This commit is contained in:
begoniezhao
@@ -1,5 +1,5 @@
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import logging
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from typing import List, Tuple, Type
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from typing import Dict, List, Tuple, Type
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from docreader.models.document import Document
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from docreader.parser.base_parser import BaseParser
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@@ -50,10 +50,13 @@ class PipelineParser(BaseParser):
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logger.error(f"Failed to create parser {parser_cls.__name__}: {e}")
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def parse_into_text(self, content: bytes) -> Document:
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images: Dict[str, str] = {}
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document = Document()
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for p in self._parsers:
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document = p.parse_into_text(content)
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content = endecode.encode_bytes(document.content)
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images.update(document.images)
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document.images.update(images)
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return document
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@classmethod
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@@ -1,111 +0,0 @@
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import logging
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import re
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import uuid
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from typing import Dict, List, Match, Optional, Tuple
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from docreader.utils import endecode
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# Get logger object
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logger = logging.getLogger(__name__)
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class MarkdownImageUtil:
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def __init__(self):
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self.b64_pattern = re.compile(
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r"!\[([^\]]*)\]\(data:image/(\w+)\+?\w*;base64,([^\)]+)\)"
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)
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self.image_pattern = re.compile(r"!\[([^\]]*)\]\(([^)]+)\)")
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self.replace_pattern = re.compile(r"!\[([^\]]*)\]\(([^)]+)\)")
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def extract_image(
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self,
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content: str,
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path_prefix: Optional[str] = None,
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replace: bool = True,
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) -> Tuple[str, List[str]]:
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"""Extract base64 encoded images from Markdown content"""
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# image_path => base64 bytes
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images: List[str] = []
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def repl(match: Match[str]) -> str:
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title = match.group(1)
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image_path = match.group(2)
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if path_prefix:
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image_path = f"{path_prefix}/{image_path}"
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images.append(image_path)
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if not replace:
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return match.group(0)
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# Replace image path with URL
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return f""
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text = self.image_pattern.sub(repl, content)
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logger.debug(f"Extracted {len(images)} images from markdown")
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return text, images
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def extract_base64(
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self,
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content: str,
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path_prefix: Optional[str] = None,
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replace: bool = True,
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) -> Tuple[str, Dict[str, bytes]]:
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"""Extract base64 encoded images from Markdown content"""
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# image_path => base64 bytes
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images: Dict[str, bytes] = {}
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def repl(match: Match[str]) -> str:
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title = match.group(1)
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img_ext = match.group(2)
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img_b64 = match.group(3)
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image_byte = endecode.encode_image(img_b64, errors="ignore")
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if not image_byte:
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logger.error(f"Failed to decode base64 image skip it: {img_b64}")
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return title
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image_path = f"{uuid.uuid4()}.{img_ext}"
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if path_prefix:
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image_path = f"{path_prefix}/{image_path}"
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images[image_path] = image_byte
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if not replace:
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return match.group(0)
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# Replace image path with URL
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return f""
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text = self.b64_pattern.sub(repl, content)
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logger.debug(f"Extracted {len(images)} base64 images from markdown")
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return text, images
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def replace_path(self, content: str, images: Dict[str, str]) -> str:
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content_replace: set = set()
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def repl(match: Match[str]) -> str:
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title = match.group(1)
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image_path = match.group(2)
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if image_path not in images:
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return match.group(0)
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content_replace.add(image_path)
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image_path = images[image_path]
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return f""
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text = self.replace_pattern.sub(repl, content)
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logger.debug(f"Replaced {len(content_replace)} images in markdown")
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return text
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if __name__ == "__main__":
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your_content = "testtest"
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image_handle = MarkdownImageUtil()
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text, images = image_handle.extract_base64(your_content)
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print(text)
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for image_url, image_byte in images.items():
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with open(image_url, "wb") as f:
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f.write(image_byte)
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@@ -1,18 +1,190 @@
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import base64
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import logging
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import os
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from typing import Dict
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import re
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import uuid
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from typing import Dict, List, Match, Optional, Tuple
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from docreader.models.document import Document
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from docreader.parser.base_parser import BaseParser
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from docreader.parser.chain_parser import PipelineParser
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from docreader.parser.markdown_image_util import MarkdownImageUtil
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from docreader.utils import endecode
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# Get logger object
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logger = logging.getLogger(__name__)
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class MarkdownTableUtil:
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def __init__(self):
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self.align_pattern = re.compile(
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r"^([\t ]*)\|[\t ]*[:-]+(?:[\t ]*\|[\t ]*[:-]+)*[\t ]*\|[\t ]*$",
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re.MULTILINE,
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)
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self.line_pattern = re.compile(
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r"^([\t ]*)\|[\t ]*[^|\r\n]*(?:[\t ]*\|[^|\r\n]*)*\|[\t ]*$",
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re.MULTILINE,
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)
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def format_table(self, content: str) -> str:
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def process_align(match: Match[str]) -> str:
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columns = [col.strip() for col in match.group(0).split("|") if col.strip()]
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processed = []
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for col in columns:
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left_colon = ":" if col.startswith(":") else ""
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right_colon = ":" if col.endswith(":") else ""
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processed.append(left_colon + "---" + right_colon)
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prefix = match.group(1)
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return prefix + "| " + " | ".join(processed) + " |"
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def process_line(match: Match[str]) -> str:
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columns = [col.strip() for col in match.group(0).split("|") if col.strip()]
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prefix = match.group(1)
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return prefix + "| " + " | ".join(columns) + " |"
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formatted_content = content
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formatted_content = self.line_pattern.sub(process_line, formatted_content)
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formatted_content = self.align_pattern.sub(process_align, formatted_content)
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return formatted_content
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@staticmethod
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def _self_test():
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test_content = """
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# 测试表格
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普通文本---不会被匹配
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## 表格1（无前置空格）
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| 姓名 | 年龄 | 城市 |
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| :---------- | -------: | :------ |
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| 张三 | 25 | 北京 |
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## 表格3（前置4个空格+首尾|）
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| 产品 | 价格 | 库存 |
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| :-------------: | ----------- | :-----------: |
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| 手机 | 5999 | 100 |
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"""
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util = MarkdownTableUtil()
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format_content = util.format_table(test_content)
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print(format_content)
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class MarkdownTableFormatter(BaseParser):
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def __init__(self, **kwargs):
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super().__init__(**kwargs)
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self.table_helper = MarkdownTableUtil()
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def parse_into_text(self, content: bytes) -> Document:
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text = endecode.decode_bytes(content)
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text = self.table_helper.format_table(text)
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return Document(content=text)
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class MarkdownImageUtil:
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def __init__(self):
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self.b64_pattern = re.compile(
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r"!\[([^\]]*)\]\(data:image/(\w+)\+?\w*;base64,([^\)]+)\)"
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)
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self.image_pattern = re.compile(r"!\[([^\]]*)\]\(([^)]+)\)")
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self.replace_pattern = re.compile(r"!\[([^\]]*)\]\(([^)]+)\)")
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def extract_image(
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self,
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content: str,
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path_prefix: Optional[str] = None,
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replace: bool = True,
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) -> Tuple[str, List[str]]:
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"""Extract base64 encoded images from Markdown content"""
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# image_path => base64 bytes
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images: List[str] = []
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def repl(match: Match[str]) -> str:
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title = match.group(1)
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image_path = match.group(2)
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if path_prefix:
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image_path = f"{path_prefix}/{image_path}"
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images.append(image_path)
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if not replace:
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return match.group(0)
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# Replace image path with URL
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return f""
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text = self.image_pattern.sub(repl, content)
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logger.debug(f"Extracted {len(images)} images from markdown")
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return text, images
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def extract_base64(
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self,
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content: str,
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path_prefix: Optional[str] = None,
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replace: bool = True,
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) -> Tuple[str, Dict[str, bytes]]:
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"""Extract base64 encoded images from Markdown content"""
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# image_path => base64 bytes
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images: Dict[str, bytes] = {}
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def repl(match: Match[str]) -> str:
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title = match.group(1)
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img_ext = match.group(2)
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img_b64 = match.group(3)
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image_byte = endecode.encode_image(img_b64, errors="ignore")
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if not image_byte:
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logger.error(f"Failed to decode base64 image skip it: {img_b64}")
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return title
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image_path = f"{uuid.uuid4()}.{img_ext}"
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if path_prefix:
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image_path = f"{path_prefix}/{image_path}"
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images[image_path] = image_byte
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if not replace:
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return match.group(0)
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# Replace image path with URL
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return f""
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text = self.b64_pattern.sub(repl, content)
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logger.debug(f"Extracted {len(images)} base64 images from markdown")
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return text, images
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def replace_path(self, content: str, images: Dict[str, str]) -> str:
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content_replace: set = set()
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def repl(match: Match[str]) -> str:
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title = match.group(1)
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image_path = match.group(2)
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if image_path not in images:
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return match.group(0)
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content_replace.add(image_path)
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image_path = images[image_path]
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return f""
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text = self.replace_pattern.sub(repl, content)
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logger.debug(f"Replaced {len(content_replace)} images in markdown")
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return text
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@staticmethod
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def _self_test():
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your_content = "testtest"
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image_handle = MarkdownImageUtil()
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text, images = image_handle.extract_base64(your_content)
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print(text)
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for image_url, image_byte in images.items():
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with open(image_url, "wb") as f:
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f.write(image_byte)
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class MarkdownImageBase64(BaseParser):
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def __init__(self, **kwargs):
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super().__init__(**kwargs)
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@@ -39,7 +211,7 @@ class MarkdownImageBase64(BaseParser):
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class MarkdownParser(PipelineParser):
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_parser_cls = (MarkdownImageBase64,)
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_parser_cls = (MarkdownTableFormatter, MarkdownImageBase64)
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if __name__ == "__main__":
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@@ -51,3 +223,6 @@ if __name__ == "__main__":
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document = parser.parse_into_text(your_content.encode())
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logger.info(document.content)
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logger.info(f"Images: {len(document.images)}, name: {document.images.keys()}")
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MarkdownImageUtil._self_test()
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MarkdownTableUtil._self_test()
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@@ -8,13 +8,14 @@ import requests
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from docreader.models.document import Document
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from docreader.parser.base_parser import BaseParser
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from docreader.parser.markdown_parser import MarkdownImageUtil
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from docreader.parser.chain_parser import PipelineParser
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from docreader.parser.markdown_parser import MarkdownImageUtil, MarkdownTableFormatter
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from docreader.utils import endecode
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logger = logging.getLogger(__name__)
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class MinerUParser(BaseParser):
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class StdMinerUParser(BaseParser):
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def __init__(
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self,
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enable_markdownify: bool = True,
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@@ -112,6 +113,10 @@ class MinerUParser(BaseParser):
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return Document(content=text, images=images)
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class MinerUParser(PipelineParser):
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_parser_cls = (StdMinerUParser, MarkdownTableFormatter)
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if __name__ == "__main__":
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logging.basicConfig(level=logging.DEBUG)
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