150 lines
7.2 KiB
Python
150 lines
7.2 KiB
Python
from PyPDF2 import PdfReader, PdfWriter
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import re # 导入正则表达式库
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import os # 用于文件和文件夹操作
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def clean_page_numbers(text):
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# 使用正则表达式删除页码
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# 假设页码在文本的最开始，紧跟着文字且无空格分隔
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cleaned_text = re.sub(r'^\s*\d+\s*(?=\D)', '', text) # 删除开头的页码，仅当紧跟非数字字符时
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# 删除结尾的页码
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cleaned_text = re.sub(r'\s+\d+\s*$', '', cleaned_text)
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# 删除形如 /129 的页码
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cleaned_text = re.sub(r'\s*\/\s*\d+\s*', '', cleaned_text)
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return cleaned_text
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def extract_pages(pdf_path, output_folder, chapter_pattern, begin_page, end_phrase_pattern, output_suffix):
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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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qualification_pattern = re.compile(r'资格审查|资质条件|能力')
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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_numbers(text)
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if re.search(chapter_pattern, cleaned_text) and i > begin_page:
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if output_suffix == "invalid" and start_page: #仅当提取Invalid的时候，判断初始页码是第一个匹配到的页码，因为招标编号可能存在多个，后面的覆盖前面
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continue
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if output_suffix == "qualification" and not re.search(qualification_pattern, cleaned_text):
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# 如果是资格审查条件，但当前页不包含相关词汇，则不执行任何操作
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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 re.search(end_phrase_pattern, cleaned_text) and i > (start_page+1):
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is_invalid_condition = output_suffix == "invalid" and i > 30
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if is_invalid_condition or output_suffix != "invalid":
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end_page = i
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break
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# 确保找到了起始和结束页面
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if start_page is None or end_page is None:
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print(f"未找到起始或结束页在文件 {pdf_path} 中！")
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return None
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# 创建一个新的PDF文档保存截取的页面
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base_file_name = os.path.splitext(os.path.basename(pdf_path))[0] # Get the base name without extension
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output_pdf_path = os.path.join(output_folder, f"{base_file_name}_{output_suffix}.pdf")
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output_doc = PdfWriter()
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# 添加需要的页面，从 start_page 开始，包括 end_page
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for page_num in range(start_page, end_page + 1):
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output_doc.add_page(pdf_document.pages[page_num])
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# 保存新的PDF文件
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with open(output_pdf_path, 'wb') as f:
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output_doc.write(f)
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print(f"已截取并保存页面从 {start_page} 到 {end_page} 为 {output_pdf_path}")
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return output_pdf_path
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def process_input(input_path, output_folder, chapter_pattern, begin_page, end_phrases, output_suffix,selection):
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# 确保输出文件夹存在
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if not os.path.exists(output_folder):
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os.makedirs(output_folder)
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if(selection==3 or selection==4 or selection==5):
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end_phrase_pattern = re.compile('|'.join([phrase for phrase in end_phrases]), re.MULTILINE)
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else:
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end_phrase_pattern = re.compile('|'.join([re.escape(phrase) for phrase in end_phrases]))
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if os.path.isdir(input_path):
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generated_files = []
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# 遍历文件夹内的所有PDF文件
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for file in os.listdir(input_path):
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if file.endswith(".pdf"):
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pdf_path = os.path.join(input_path, file)
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output_pdf_path = extract_pages(pdf_path, output_folder, chapter_pattern, begin_page, end_phrase_pattern, output_suffix)
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if output_pdf_path and os.path.isfile(output_pdf_path):
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generated_files.append(output_pdf_path)
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return generated_files
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elif os.path.isfile(input_path) and input_path.endswith(".pdf"):
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# 处理单个PDF文件
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output_pdf_path = extract_pages(input_path, output_folder, chapter_pattern, begin_page, end_phrase_pattern, output_suffix)
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if output_pdf_path and os.path.isfile(output_pdf_path):
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return [output_pdf_path] # 以列表形式返回，以保持一致性
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else:
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print("提供的路径既不是文件夹也不是PDF文件。")
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return []
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def truncate_pdf_main(input_path, output_folder, selection):
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if selection == 1:
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# Configure patterns and phrases for "投标人须知前附表"
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pattern = re.compile(r'第[一二三四五六七八九十]+章\s*投标人须知')
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begin_page = 3
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end_phrases = ["投标人须知正文"]
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output_suffix = "tobidders_notice_table"
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elif selection == 2:
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# Configure patterns and phrases for "评标办法"
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pattern = re.compile(r'第[一二三四五六七八九十]+章\s*评标办法')
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begin_page = 10
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end_phrases = ["评标办法正文", "评标办法"]
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output_suffix = "evaluation_method"
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elif selection == 3:
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# Configure patterns and phrases for "投标人须知正文"
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pattern = re.compile(r'投标人须知正文')
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begin_page = 5
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end_phrases = [
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r'^第[一二三四五六七八九十]+章\s*评标办法',r'^评标办法前附表',r'^附录：', r'^附录一：',r'^附件：', r'^附件一：',r'^附表：', r'^附表一：',r'^附录:', r'^附录一:',r'^附件:', r'^附件一:',r'^附表:', r'^附表一:',
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]
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output_suffix = "tobidders_notice"
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elif selection==4:
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pattern = re.compile(r'第[一二三四五六七八九十]+章\s*招标公告|第一卷|招标编号:|招标编号：')
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begin_page = 0
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end_phrases = [
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r'第[一二三四五六七八九十]+章\s*合同',
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r'：清标报告',# 添加了新的匹配项
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r':清标报告'
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]
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output_suffix="invalid"
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elif selection==5:
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appendix_pattern = r'^附录(?:一)?[：:]|^附件(?:一)?[：:]|^附表(?:一)?[：:]'
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pattern = re.compile(appendix_pattern)
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begin_page=5
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end_phrases = [r'评标办法正文', r'评标办法',appendix_pattern]
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output_suffix="qualification"
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else:
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print("无效的选择")
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return None
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# Process the selected input
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return process_input(input_path, output_folder, pattern, begin_page, end_phrases, output_suffix,selection)
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def truncate_pdf_multiple(input_path, output_folder):
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truncate_files = []
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for selection in range(1, 6):
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files = truncate_pdf_main(input_path, output_folder, selection)
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truncate_files.extend(files)
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return truncate_files
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if __name__ == "__main__":
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input_path = "C:\\Users\\Administrator\\Desktop\\招标文件\\招标test文件夹\\zbtest5.pdf"
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output_folder = "C:\\Users\\Administrator\\Desktop\\招标文件\\test"
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truncate_pdf_multiple(input_path,output_folder)
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# selection = 5 # 例如：1 - 投标人须知前附表, 2 - 评标办法, 3 - 投标人须知正文 4-招标公告-合同条款前
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# generated_files = truncate_pdf_main(input_path, output_folder, selection)
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# print("生成的文件:", generated_files)
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