106 lines
4.8 KiB
Python
106 lines
4.8 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, begin_pattern, begin_page, end_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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# 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(begin_pattern, cleaned_text) and i > begin_page:
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start_page = i
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if start_page is not None and re.search(end_pattern, cleaned_text) and i > (start_page+1):
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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, begin_pattern, begin_page, end_pattern, output_suffix):
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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 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, begin_pattern, begin_page, end_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, begin_pattern, begin_page, end_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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begin_pattern = re.compile(r'第[一二三四五六七八九十百千]+章.*?(?:项目|服务|商务).*?要求')
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begin_page = 5
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end_pattern = re.compile(r'第[一二三四五六七八九十百千]+章\s*(资格审查|评标方法|评审办法)')
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# 示例文本进行测试
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output_suffix = "tobidders_notice_table"
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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, begin_pattern, begin_page, end_pattern, output_suffix)
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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, 2):
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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\\WPSDrive\\292826853\\WPS云盘\\应用\\输出为PDF\\公安局音视频监控系统设备采购项目(定稿）_20240829133603.pdf"
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output_folder = "C:\\Users\\Administrator\\Desktop\\货物标\\output1"
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# truncate_pdf_multiple(input_path,output_folder)
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selection = 1 # 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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