473 lines
26 KiB
Python
473 lines
26 KiB
Python
#flask_app/工程标/截取pdf工程标版.py
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import regex
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import os
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import time
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from PyPDF2 import PdfReader, PdfWriter
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from flask_app.general.clean_pdf import clean_page_content
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from flask_app.general.截取pdf通用函数 import get_start_and_common_header,save_extracted_pages
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from flask_app.general.通用功能函数 import get_global_logger
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def extract_pages_tobidders_notice(pdf_path, output_folder, begin_pattern, begin_page, common_header,
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is_secondary_match):
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pdf_document = PdfReader(pdf_path)
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exclusion_pattern = regex.compile(r'文件的构成|文件的组成|须对应|需对应|须按照|需按照|须根据|需根据|文件组成|文件构成')
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def run_extraction():
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start_page = None
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mid_page = None
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end_page = None
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chapter_type = None # 用于存储“章”或“部分”
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combined_mid_pattern= None
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end_pattern = None
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for i, page in enumerate(pdf_document.pages):
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text = page.extract_text() or ""
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cleaned_text = clean_page_content(text, common_header)
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if exclusion_pattern and regex.search(exclusion_pattern, cleaned_text) and mid_page is not None:
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continue
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if start_page is None:
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match = regex.search(begin_pattern, cleaned_text)
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if match and i > begin_page:
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start_page = i
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matched_text: str = match.group(0) # 获取整个匹配的文本
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if '章' in matched_text:
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chapter_type = '章'
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elif '部分' in matched_text:
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chapter_type = '部分'
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else:
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chapter_type = None # 未匹配到“章”或“部分”
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if chapter_type:
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# 根据 chapter_type 动态生成 end_pattern
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if not is_secondary_match:
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end_pattern = regex.compile(
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rf'^第[一二三四五六七八九十百千]+?(?:{chapter_type})\s*[\u4e00-\u9fff]+|'
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r'^评标(方法|办法)前附表|'
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r'^附录(?:一)?[：:]|'
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r'^附件(?:一)?[：:]|'
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r'^附表(?:一)?[：:]',
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regex.MULTILINE
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)
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else:
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end_pattern = regex.compile(
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rf'第[一二三四五六七八九十百千]+?(?:{chapter_type})\s*[\u4e00 -\u9fff]+\s*$'
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)
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# 根据 chapter_type 动态生成 additional_mid_pattern
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if chapter_type == '章':
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additional_mid_pattern = r'^第[一二三四五六七八九十百千]+?(?:部分)'
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elif chapter_type == '部分':
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additional_mid_pattern = r'^第[一二三四五六七八九十百千]+?(?:章)'
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else:
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additional_mid_pattern = ''
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# 定义基础的 mid_pattern
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base_mid_pattern = r'^\s*(?:[（(]\s*[一二12]?\s*[)）]\s*[、．.]*|' \
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r'[一二12][、．.]+|[、．.]+)\s*(说\s*明|总\s*则|名\s*词\s*解\s*释)' \
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r'|(?<!见\s*)(?<!与\s*)(?<!"\s*)(?<!“\s*)(?<!”\s*)(?:投标人?|磋商|供应商|谈判供应商|磋商供应商)\s*须知正文\s*$'
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# 合并基础模式和额外模式
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if additional_mid_pattern:
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combined_mid_pattern = regex.compile(
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rf'(?:{base_mid_pattern})|(?:{additional_mid_pattern})',
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regex.MULTILINE
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)
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else:
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combined_mid_pattern = regex.compile(
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rf'{base_mid_pattern}',
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regex.MULTILINE
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)
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# print(f"生成的 combined_mid_pattern: {combined_mid_pattern.pattern}") # 打印 combined_mid_pattern
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else:
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# 如果未匹配到“章”或“部分”，使用默认的 end_pattern 和 mid_pattern
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if not is_secondary_match:
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end_pattern = regex.compile(
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r'^第[一二三四五六七八九十百千]+(?:章|部分)\s*[\u4e00-\u9fff]+|'
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r'^评标(方法|办法)前附表|' # Match "评标办法前附表" at the beginning of a line
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r'^附录(?:一)?[：:]|' # Match "附录一" with optional "一" and colon
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r'^附件(?:一)?[：:]|' # Match "附件一" with optional "一" and colon
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r'^附表(?:一)?[：:]', # Match "附表一" with optional "一" and colon
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regex.MULTILINE
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)
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else:
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end_pattern = regex.compile(
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rf'第[一二三四五六七八九十百千]+(?:章|部分)\s*[\u4e00-\u9fff]+\s*$'
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)
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# print(f"使用默认的 end_pattern: {end_pattern.pattern}") # 打印默认的 end_pattern
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# 定义基础的 mid_pattern
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base_mid_pattern = r'^\s*(?:[（(]\s*[一1]?\s*[)）]\s*[、．.]*|[一1][、．.]+|[、．.]+)\s*(说\s*明|总\s*则)'
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combined_mid_pattern = regex.compile(
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rf'{base_mid_pattern}',
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regex.MULTILINE
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)
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continue
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if start_page is not None and mid_page is None and combined_mid_pattern:
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if regex.search(combined_mid_pattern, cleaned_text):
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mid_page = i
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if start_page is not None and mid_page is not None and chapter_type:
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if regex.search(end_pattern, cleaned_text):
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if i > mid_page:
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end_page = i
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break
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return start_page, mid_page, end_page
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# 运行提取
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start_page, mid_page, end_page = run_extraction()
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if start_page is None or end_page is None or mid_page is None:
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print(f"first: tobidders_notice 未找到起始或结束页在文件 {pdf_path} 中！尝试备用提取策略。")
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return "", ""
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path1 = save_extracted_pages(pdf_path, output_folder, start_page, mid_page, "tobidders_notice_table", common_header)
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path2 = save_extracted_pages(pdf_path, output_folder, mid_page, end_page, "tobidders_notice", common_header)
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return path1, path2
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def extract_pages(pdf_path, output_folder, begin_pattern, begin_page, end_pattern, output_suffix, common_header):
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# 打开PDF文件
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pdf_document = PdfReader(pdf_path)
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start_page = None
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end_page = None
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exclusion_pattern = regex.compile(r'文件的构成|文件的组成|须对应|需对应|须按照|需按照|须根据|需根据|文件组成|文件构成')
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# 遍历文档的每一页，查找开始和结束短语的位置
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for i in range(len(pdf_document.pages)):
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page = pdf_document.pages[i]
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text = page.extract_text()
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if text:
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cleaned_text = clean_page_content(text, common_header)
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if regex.search(exclusion_pattern, cleaned_text):
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continue
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if regex.search(begin_pattern, cleaned_text) and i >= begin_page:
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if start_page and (output_suffix == "notice" or output_suffix == "invalid"):
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pass
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else:
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start_page = i
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if start_page is not None and regex.search(end_pattern, cleaned_text) and not regex.search(begin_pattern,cleaned_text):
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condition = i > start_page
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if condition:
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is_invalid_condition = output_suffix == "invalid" and i > 30 # 这边默认无效投标至少有30页
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if is_invalid_condition or output_suffix != "invalid":
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end_page = i
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break # 找到结束页后退出循环
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# 移除对 extract_pages_twice 的调用
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if start_page is None or end_page is None:
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print(f"{output_suffix} first: 未找到起始或结束页在文件 {pdf_path} 中！")
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return [""]
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else:
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return [save_extracted_pages(pdf_path, output_folder, start_page, end_page, output_suffix, common_header)]
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def extract_pages_twice(pdf_path, output_folder, output_suffix, common_header, last_begin_index):
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"""
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处理 PDF 文件，作为 truncate_pdf_main 的后备方法。
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此函数将在所有模式对都失败后调用。
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"""
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try:
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pdf_document = PdfReader(pdf_path)
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if output_suffix == "qualification":
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print("twice:qualificaiton!")
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# 动态设置 include_keys
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include_keys = ["资格审查", "资质审查", "符合性审查", "资格性检查", "符合性检查","资格检查","能力","信誉"]
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# 定义起始匹配模式，仅匹配“附录”、“附件”或“附表”
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begin_pattern = r'^(?:附录(?:[一1])?[：:]|附件(?:[一1])?[：:]|附表(?:[一1])?[：:])'
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# 定义结束匹配模式 - 附录、附件、附表等（移除负向前瞻）
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end_pattern_attachment = regex.compile(
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r'^(?:附录[一二三四五六七八九1-9]*[：:]|附件[一二三四五六七八九1-9]*[：:]|附表[一二三四五六七八九1-9]*[：:]).*$',
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regex.MULTILINE
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)
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# 定义结束匹配模式 - 章节标题、评标附表、投标人须知等
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end_pattern_chapter = regex.compile(
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r'第[一二三四五六七八九]+(?:章|部分)\s*[\u4e00-\u9fff、()（）]+\s*$|'
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r'\s*评标(?:办法|方法)前附表\s*$|'
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r'投标人须知',
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regex.MULTILINE
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)
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start_page = None
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end_page = None
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# 从指定的开始页开始遍历
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for i, page in enumerate(pdf_document.pages[last_begin_index:], start=last_begin_index):
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text = page.extract_text()
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if text:
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cleaned_text = clean_page_content(text, common_header)
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# 确定起始页，需在last_begin_index之后
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if any(key in cleaned_text for key in include_keys):
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if regex.search(begin_pattern, cleaned_text, regex.MULTILINE):
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if start_page is None:
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start_page = i # 确保起始页不小于章节的开始页码
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continue
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# print(f"匹配到附录/附件/附表，设置起始页为: {start_page}")
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# 确定结束页 - 附录、附件、附表等
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if start_page is not None and end_pattern_attachment.search(cleaned_text):
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# 额外检查当前页面是否不包含任何 include_keys
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if not any(key in cleaned_text for key in include_keys):
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if i > start_page:
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end_page = i
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# print(f"找到结束页 (附件类): {end_page}")
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break # 找到结束页后退出循环
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else:
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print(f"当前页面匹配附件结束模式但包含 include_keys，继续查找。页面: {i}")
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# 确定结束页 - 章节标题、评标附表、投标人须知等
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elif start_page is not None and end_pattern_chapter.search(cleaned_text):
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if i > start_page:
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end_page = i
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# print(f"找到结束页 (章节标题等): {end_page}")
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break # 找到结束页后退出循环
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if start_page is None or end_page is None:
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print(f"{output_suffix} twice: 未找到起始或结束页在文件 {pdf_path} 中！")
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return []
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else:
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return [save_extracted_pages(pdf_path, output_folder, start_page, end_page, output_suffix, common_header)]
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elif output_suffix == "invalid":
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pdf_document = PdfReader(pdf_path)
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total_pages = len(pdf_document.pages)
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# 计算总页数的三分之二
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total = int(total_pages * 2 / 3)
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start_page = last_begin_index
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end_page = min(90, total)
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return [save_extracted_pages(pdf_path, output_folder, start_page, end_page, output_suffix, common_header)]
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else:
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print(f"{output_suffix} twice: 未定义的输出后缀。")
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return []
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except Exception as e:
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print(f"Error in extract_pages_twice: {e}")
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return []
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def truncate_pdf_main_engineering(input_path, output_folder, selection,logger,output_suffix="default"):
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try:
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# 内嵌的处理单个文件的函数
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def process_single_file(file_path, output_folder, selection):
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try:
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# 获取起始和通用页眉
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common_header, last_begin_index = get_start_and_common_header(file_path, 20)
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if selection == 1:
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# Selection 1: 招标公告
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pattern_pairs = [
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(
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regex.compile(
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r'^第[一二三四五六七八九十百千]+(?:章|部分).*?(?:公告|邀请书|邀请函|邀请).*|^第一卷|^投标邀请书|^投标邀请函|^投标邀请'
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),
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regex.compile(
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r'^第[一二三四五六七八九十百千]+(?:章|部分)\s*[\u4e00-\u9fff]+', regex.MULTILINE
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)
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),
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(
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regex.compile(
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r'.*(?<!见\s*)(?<!与\s*)(?<!"\s*)(?<!“\s*)(?<!”\s*)(?:招标公告|磋商公告|谈判公告|邀请书|邀请函|投标邀请|磋商邀请|谈判邀请)[\)）]?\s*$',
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regex.MULTILINE
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),
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regex.compile(
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r'.*(?<!见\s*)(?<!与\s*)(?<!"\s*)(?<!“\s*)(?<!”\s*)(?:投标人?|磋商|供应商|谈判供应商|磋商供应商)须知(?:前附表)?\s*$',
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regex.MULTILINE
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)
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)
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]
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output_suffix = "notice"
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elif selection == 2:
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# Selection 2: 评标办法
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pattern_pairs = [
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(
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regex.compile(
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r'^第[一二三四五六七八九十]+(?:章|部分)\s*(?=.*(?:磋商|谈判|评标|评定|评审))(?=.*(?:办法|方法))',
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regex.MULTILINE
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),
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# Alternative end pattern
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regex.compile(
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r'^第[一二三四五六七八九十1-9]+(?:章|部分)\s*[\u4e00-\u9fff]+|[：:]清标报告\s*$|'
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r'(?<!见\s*)(?<!与\s*)(?<!"\s*)(?<!“\s*)(?<!”\s*)评标(方法|办法)正文\s*$|'
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r'(?<!见\s*)(?<!与\s*)(?<!"\s*)(?<!“\s*)(?<!”\s*)(?:评标|定标)详细程序\s*$',
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regex.MULTILINE
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)
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),
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(
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regex.compile(
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r'(?<!见\s*)(?<!与\s*)(?<!"\s*)(?<!“\s*)(?<!”\s*)'
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r'第[一二三四五六七八九十1-9]+(?:章|部分)\s*'
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r'[\u4e00-\u9fff、()（）]*?'
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r'(?=.*(?:磋商|谈判|评标|评定|评审))'
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r'(?=.*(?:办法|方法))'
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r'[\u4e00-\u9fff、()（）]*\s*$|'
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r'\s*评标(办法|方法)前附表\s*$',
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regex.MULTILINE
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),
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regex.compile(
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r'第[一二三四五六七八九十1-9]+(?:章|部分)\s*[\u4e00-\u9fff、()（）]+\s*$',
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regex.MULTILINE
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)
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)
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]
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output_suffix = "evaluation_method"
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elif selection == 3:
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# Selection 3: 资格审查条件
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pattern_pairs = [
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(
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regex.compile(
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r'^(?:附录(?:[一1])?[：:]|附件(?:[一1])?[：:]|附表(?:[一1])?[：:]).*(?:资质|能力|信誉).*$|'
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r'(?<!见\s*)(?<!与\s*)(?<!"\s*)(?<!“\s*)(?<!”\s*)第[一二三四五六七八九1-9]+(?:章|部分)\s*'
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r'[\u4e00-\u9fff、()（）]*资格[\u4e00-\u9fff、()（）]*\s*$',
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regex.MULTILINE
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),
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regex.compile(
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r'^(?:附录[一二三四五六七八九1-9]*[：:]|附件[一二三四五六七八九1-9]*[：:]|附表[一二三四五六七八九1-9]*[：:])(?!.*(?:资质|能力|信誉)).*|'
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r'(?<!见\s*)(?<!与\s*)(?<!"\s*)(?<!“\s*)(?<!”\s*)第[一二三四五六七八九1-9]+(?:章|部分)\s*[\u4e00-\u9fff]+',
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regex.MULTILINE
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)
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)
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]
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output_suffix = "qualification"
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elif selection == 4:
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# Selection 4: 投标人须知
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pattern_pairs = [
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(
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regex.compile(
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r'(?:第[一二三四五六七八九十百千]+(?:章|部分)\s*(?:投标人?|磋商|供应商|谈判供应商|磋商供应商)须知|'
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r'(?:投标人?|磋商|供应商|谈判供应商|磋商供应商)须知前附表)\s*$',
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regex.MULTILINE
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),
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regex.compile(
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r'第[一二三四五六七八九十]+(?:章|部分)\s*[\u4e00-\u9fff]+|^评标(方法|办法)前附表|^附录(?:一)?[：:]|^附件(?:一)?[：:]|^附表(?:一)?[：:]',
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regex.MULTILINE
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)
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),
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(
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regex.compile(
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r'.*(?<!见\s*)(?<!与\s*)(?<!"\s*)(?<!“\s*)(?<!”\s*)(?:投标人?|磋商|供应商|谈判供应商|磋商供应商)须知\s*$|'
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r'(?<!见\s*)(?<!与\s*)(?<!"\s*)(?<!“\s*)(?<!”\s*)(?:投标人?|磋商|供应商|谈判供应商|磋商供应商)须知前附表\s*$',
|
||
regex.MULTILINE
|
||
),
|
||
regex.compile(
|
||
r'第[一二三四五六七八九十]+(?:章|部分)\s*[\u4e00-\u9fff]+|^评标(方法|办法)前附表|^附录(?:一)?[：:]|^附件(?:一)?[：:]|^附表(?:一)?[：:]',
|
||
regex.MULTILINE
|
||
)
|
||
)
|
||
]
|
||
output_suffix = "tobidders_notice"
|
||
elif selection == 5:
|
||
# Selection 5: 无效标
|
||
pattern_pairs = [
|
||
(
|
||
regex.compile(
|
||
r'^第[一二三四五六七八九十百千]+(?:章|部分).*?(?:公告|邀请书|邀请函|邀请).*|^第一卷|^投标邀请书|^投标邀请函|^投标邀请'
|
||
),
|
||
regex.compile(
|
||
r'第[一二三四五六七八九十]+章\s*合同|[：:]清标报告|^第二卷',
|
||
regex.MULTILINE
|
||
)
|
||
),
|
||
(
|
||
regex.compile(
|
||
r'.*(?<!见\s*)(?<!与\s*)(?<!"\s*)(?<!“\s*)(?<!”\s*)(?:招标公告|磋商公告|谈判公告|邀请书|邀请函|投标邀请|磋商邀请|谈判邀请)[\)）]?\s*$',
|
||
regex.MULTILINE
|
||
),
|
||
regex.compile(
|
||
r'第[一二三四五六七八九十]+章\s*合同|[：:]清标报告|^第二卷',
|
||
regex.MULTILINE
|
||
)
|
||
)
|
||
]
|
||
output_suffix = "invalid"
|
||
else:
|
||
print("无效的选择:请选择1-5")
|
||
return [""]
|
||
|
||
for idx, (begin_pattern, end_pattern) in enumerate(pattern_pairs, start=1):
|
||
is_secondary_match = (idx == 2)
|
||
begin_page = last_begin_index if last_begin_index != 0 else {
|
||
1: 0, # 公告
|
||
2: 10, # 评标
|
||
3: 5, # 资格
|
||
4: 3, # 前附表
|
||
5: 0 # 无效标
|
||
}.get(selection, 0)
|
||
|
||
if selection == 4: # 投标人须知
|
||
output_paths = list(
|
||
extract_pages_tobidders_notice(
|
||
file_path,
|
||
output_folder,
|
||
begin_pattern,
|
||
begin_page,
|
||
common_header,
|
||
is_secondary_match
|
||
)
|
||
)
|
||
if output_paths and any(os.path.isfile(f) for f in output_paths):
|
||
return output_paths
|
||
else:
|
||
# print(f"Selection {selection}: 使用组合提取函数失败。尝试下一个模式对。")
|
||
continue
|
||
output_paths = extract_pages(
|
||
file_path,
|
||
output_folder,
|
||
begin_pattern,
|
||
begin_page=begin_page,
|
||
end_pattern=end_pattern,
|
||
output_suffix=output_suffix,
|
||
common_header=common_header
|
||
)
|
||
if output_paths and any(os.path.isfile(f) for f in output_paths):
|
||
# print(f"Selection {selection}: 使用模式对 {idx} 成功提取。")
|
||
return output_paths # 成功提取后立即返回
|
||
else:
|
||
# print(f"Selection {selection}: 使用模式对 {idx} 失败。尝试下一个模式对。")
|
||
continue
|
||
|
||
# 如果所有模式对都失败，尝试回退
|
||
print(f"Selection {selection}: 所有模式对都未匹配成功。尝试执行 extract_pages_twice 或返回空。")
|
||
fallback_result = extract_pages_twice(
|
||
file_path,
|
||
output_folder,
|
||
output_suffix,
|
||
common_header,
|
||
last_begin_index
|
||
)
|
||
if fallback_result and any(os.path.isfile(f) for f in fallback_result):
|
||
return fallback_result
|
||
else:
|
||
# 根据 selection 返回相应数量的空字符串
|
||
empty_returns = ["", ""] if selection == 4 else [""]
|
||
logger.error(f"Selection {selection}: 回退提取失败，返回空字符串。")
|
||
return empty_returns
|
||
|
||
except Exception as e:
|
||
logger.error(f"Error in processing file '{file_path}': {e}")
|
||
return [""] * (2 if selection == 4 else 1)
|
||
|
||
# 检查是否为文件夹
|
||
if os.path.isdir(input_path):
|
||
generated_files = []
|
||
for file_name in os.listdir(input_path):
|
||
if file_name.endswith('.pdf'):
|
||
file_path = os.path.join(input_path, file_name)
|
||
files = process_single_file(file_path, output_folder, selection)
|
||
if files:
|
||
generated_files.extend(files)
|
||
return generated_files
|
||
elif os.path.isfile(input_path) and input_path.endswith('.pdf'):
|
||
return process_single_file(input_path, output_folder, selection)
|
||
else:
|
||
print("提供的路径既不是文件夹也不是PDF文件。")
|
||
return [""] * (2 if selection == 4 else 1)
|
||
except Exception as e:
|
||
print(f"Error in truncate_pdf_main_goods: {e}")
|
||
return [""] * (2 if selection == 4 else 1)
|
||
|
||
if __name__ == "__main__":
|
||
logger=get_global_logger("123")
|
||
start_time = time.time()
|
||
# input_path = r"C:\Users\Administrator\Desktop\new招标文件\工程标"
|
||
pdf_path=r"C:\Users\Administrator\Desktop\招标文件\招标test文件夹\zbtest4_evaluation_method.pdf"
|
||
|
||
# pdf_path = r"C:\Users\Administrator\Desktop\招标文件\招标02.pdf"
|
||
# input_path=r"C:\Users\Administrator\Desktop\招标文件\招标test文件夹\zbtest8.pdf"
|
||
output_folder = r"C:\Users\Administrator\Desktop\fsdownload\91399aa4-1ee8-447d-a05b-03cd8d15ced5\tmp"
|
||
# selection = 1 # 例如：1 - 招标公告, 2 - 评标办法, 3 -资格审查条件 4-投标人须知前附表+正文 5-无效标
|
||
# generated_files = truncate_pdf_main_engineering(pdf_path, output_folder, selection,logger)
|
||
# print(generated_files)
|
||
# print("生成的文件:", generated_files)
|
||
end_time = time.time()
|
||
print("耗时：" + str(end_time - start_time))
|