zbparse/flask_app/general/format_change.py

import json
import os
import mimetypes
import requests

from flask_app.general.clean_pdf import is_scanned_pdf
def download_file(url, local_filename):
    """
    下载文件并保存到本地，基于Content-Type设置文件扩展名。

    参数:
    - url (str): 文件的URL地址。
    - local_filename (str): 本地保存的文件名（不含扩展名）。

    返回:
    - tuple: (完整文件名, 文件类型代码)
             文件类型代码:
                 1 - .docx
                 2 - .pdf
                 3 - .doc
                 4 - 其他
    - None: 下载失败
    """
    try:
        with requests.get(url, stream=True) as response:
            response.raise_for_status()  # 确保请求成功，否则抛出异常

            # 获取Content-Type并猜测文件扩展名
            content_type = response.headers.get('Content-Type', '')
            extension = mimetypes.guess_extension(content_type, strict=False) or '.docx'

            # 分离文件名和现有扩展名
            base, ext = os.path.splitext(local_filename)
            if ext.lower() != extension:
                full_filename = base + extension
            else:
                full_filename = local_filename

            # 下载并保存文件
            with open(full_filename, 'wb') as file:
                for chunk in response.iter_content(chunk_size=8192):
                    if chunk:  # 避免写入空块
                        file.write(chunk)

            # 定义扩展名到代码的映射
            extension_mapping = {
                '.docx': 1,
                '.pdf': 2,
                '.doc': 3
            }
            file_code = extension_mapping.get(extension.lower(), 4)
            # 如果是 PDF，判断是否为扫描型
            if extension.lower() == '.pdf':
                print(f"Checking if the PDF is scanned: {full_filename}")
                if is_scanned_pdf(full_filename):
                    print(f"PDF is scanned. Converting to normal PDF: {full_filename}")
                    # 转换扫描型 PDF -> DOCX -> 普通 PDF
                    intermediate_docx = pdf2docx(full_filename)
                    if intermediate_docx:
                        normal_pdf = docx2pdf(intermediate_docx)
                        if normal_pdf:
                            # 替换原始 PDF 文件
                            os.replace(normal_pdf, full_filename)
                            print(f"Replaced scanned PDF with normal PDF: {full_filename}")
            return full_filename, file_code

    except requests.HTTPError as e:
        print(f"download: HTTP 错误: {e}")
    except requests.RequestException as e:
        print(f"download: 下载文件时出错: {e}")
    except Exception as e:
        print(f"download: 发生错误: {e}")

    return None

def upload_file(file_path, url):
    receive_file_url = ""
    # 定义文件名和路径
    filename = file_path.split('/')[-1]

    # 打开文件以二进制形式读取
    with open(file_path, 'rb') as f:
        # 使用multipart/form-data格式发送文件
        files = {'file': (filename, f)}

        # 发送POST请求
        response = requests.post(url, files=files)

    # 检查响应状态码
    if response.status_code == 200:
        print("format_change 文件上传成功")
        receive_file_response = response.content.decode('utf-8')
        receive_file_json = json.loads(receive_file_response)
        receive_file_url = receive_file_json["data"]

    else:
        print(f"format_change 文件上传失败，状态码: {response.status_code}")
        print(f"format_change {response.text}")

    return receive_file_url


def get_filename_and_folder(file_path):
    # 使用os.path.basename获取文件名
    original_filename = os.path.basename(file_path)
    filename_without_ext, ext = os.path.splitext(original_filename)

    # 替换文件名中的点为下划线，避免分割问题
    safe_filename = filename_without_ext.replace('.', '_')

    # 使用os.path.dirname获取文件所在的完整目录路径
    directory = os.path.dirname(file_path)
    return safe_filename, directory

#参数为要转换的文件路径，以及输出的文件名，文件类型为自动补全。
def pdf2docx(local_path_in):
    if not local_path_in:
        return ""

    # 获取文件名和所在文件夹
    filename, folder = get_filename_and_folder(local_path_in)

    # 检查是否已经存在同名的 .docx 文件
    docx_file_path = os.path.join(folder, f"{filename}.docx")
    if os.path.exists(docx_file_path):
        print(f"Skipping conversion, {docx_file_path} already exists.")
        return docx_file_path

    remote_url = 'http://47.98.59.178:8000/v3/3rd/files/transfer/p2d'
    receive_download_url = upload_file(local_path_in, remote_url)  # 转换完成，得到下载链接

    local_filename = os.path.join(folder,
                                  filename)  # 输出文件名 C:\Users\Administrator\Desktop\货物标\zbfiles\6.2定版视频会议磋商文件   不带后缀
    downloaded_filepath, file_type = download_file(receive_download_url, local_filename)
    print(f"format_change p2d:have downloaded file to: {downloaded_filepath}")
    return downloaded_filepath

def doc2docx(local_path_in):
    if not local_path_in:
        return ""
    remote_url = 'http://47.98.59.178:8000/v3/3rd/files/transfer/d2d'
    receive_download_url = upload_file(local_path_in, remote_url)
    print(receive_download_url)
    filename, folder = get_filename_and_folder(local_path_in)  # 输入输出在同一个文件夹
    local_filename = os.path.join(folder, filename)  # 输出文件名
    downloaded_filepath, file_type = download_file(receive_download_url, local_filename)
    print(f"format_change d2d:have downloaded file to: {downloaded_filepath}")
    return downloaded_filepath
def docx2pdf(local_path_in):
    if not local_path_in:
        return ""
    remote_url = 'http://47.98.59.178:8000/v3/3rd/files/transfer/d2p'
    receive_download_url = upload_file(local_path_in, remote_url)
    filename, folder = get_filename_and_folder(local_path_in)  # 输入输出在同一个文件夹
    local_filename = os.path.join(folder, filename)  # 输出文件名
    downloaded_filepath,file_type = download_file(receive_download_url, local_filename)
    print(f"format_change d2p:have downloaded file to: {downloaded_filepath}")
    return downloaded_filepath

# def docx2pdf(file_path):
#     """
#     将本地的 .docx 或 .doc 文件转换为 .pdf 文件。
#
#     参数：
#     - file_path: str, 本地文件的路径，支持 .docx 和 .doc 格式。
#     """
#     # 检查文件是否存在
#     if not file_path:
#         return ""
#     # 获取文件名和扩展名
#     base_name = os.path.basename(file_path)
#     name, ext = os.path.splitext(base_name)
#     ext = ext.lower().lstrip('.')
#
#     if ext not in ['docx', 'doc']:
#         raise ValueError(f"doc2pdf 仅支持 .docx 和 .doc 文件，当前文件扩展名为: .{ext}")
#
#     # 定义转换接口
#     endpoint = 'http://120.26.236.97:5008/convert_to_pdf'
#     # endpoint = 'http://192.168.0.2:5008/convert_to_pdf'
#
#     # 获取文件所在目录
#     output_dir = os.path.dirname(file_path)
#
#     # 准备上传的文件
#     with open(file_path, 'rb') as f:
#         files = {'file': (base_name, f)}
#         try:
#             print(f"正在将 {base_name} 转换为 .pdf 格式...")
#             response = requests.post(endpoint, files=files)
#             response.raise_for_status()  # 检查请求是否成功
#         except requests.RequestException as e:
#             print(f"转换过程中发生错误: {e}")
#             return
#
#     # 准备保存转换后文件的路径
#     output_file_name = f"{name}.pdf"
#     output_path = os.path.join(output_dir, output_file_name)
#
#     # 保存转换后的文件
#     with open(output_path, 'wb') as out_file:
#         out_file.write(response.content)
#
#     print(f"文件已成功转换并保存至: {output_path}")
#     return output_path
#
#
# def doc2docx(file_path):
#     """
#     将本地的 .doc 文件转换为 .docx 文件。
#
#     参数：
#     - file_path: str, 本地文件的路径，支持 .doc 格式。
#     """
#     # 检查文件是否存在
#     if not file_path:
#         return ""
#     # 获取文件名和扩展名
#     base_name = os.path.basename(file_path)
#     name, ext = os.path.splitext(base_name)
#     ext = ext.lower().lstrip('.')
#
#     if ext != 'doc':
#         raise ValueError(f"doc2docx 仅支持 .doc 文件，当前文件扩展名为: .{ext}")
#
#     # 定义转换接口
#     endpoint = 'http://120.26.236.97:5008/convert_to_docx'
#
#     # 获取文件所在目录
#     output_dir = os.path.dirname(file_path)
#
#     # 准备上传的文件
#     with open(file_path, 'rb') as f:
#         files = {'file': (base_name, f)}
#         try:
#             print(f"正在将 {base_name} 转换为 .docx 格式...")
#             response = requests.post(endpoint, files=files)
#             response.raise_for_status()  # 检查请求是否成功
#         except requests.RequestException as e:
#             print(f"转换过程中发生错误: {e}")
#             return
#
#     # 准备保存转换后文件的路径
#     output_file_name = f"{name}.docx"
#     output_path = os.path.join(output_dir, output_file_name)
#
#     # 保存转换后的文件
#     with open(output_path, 'wb') as out_file:
#         out_file.write(response.content)
#
#     print(f"文件已成功转换并保存至: {output_path}")
#     return output_path


if __name__ == '__main__':
    # 替换为你的文件路径和API URL
    # local_path_in="C:\\Users\\Administrator\\Desktop\\fsdownload\\1fbbb6ff-7ddc-40bb-8857-b7de37aece3f\\兴欣工程.pdf"
    # local_path_in = "C:\\Users\\Administrator\\Desktop\\fsdownload\\b151fcd0-4cd8-49b4-8de3-964057a9e653\\ztbfile.docx"
    # local_path_in="C:\\Users\\Administrator\\Desktop\\fsdownload\\ztbfile.pdf"
    # local_path_in ="C:\\Users\\Administrator\\Desktop\\招标文件\\招标test文件夹\\招标文件.pdf"
    # local_path_in=r"C:\Users\Administrator\Desktop\fsdownload\457ee03d-c61c-4672-b959-2bbb35a1de29\ztbfile_invalid.pdf"
    # local_path_in = r"C:\Users\Administrator\Documents\WeChat Files\wxid_d11awe5rp1y722\FileStorage\File\2024-12\ztbfile.pdf"
    # downloaded_file=pdf2docx(local_path_in)
    # # downloaded_file=pdf2docx(local_path_in)
    # # downloaded_file=docx2pdf(local_path_in)
    # print(downloaded_file)

    test_url = "https://bid-assistance.oss-cn-wuhan-lr.aliyuncs.com/test/094%E5%AE%9A%E7%A8%BF-%E6%B9%96%E5%8C%97%E5%B7%A5%E4%B8%9A%E5%A4%A7%E5%AD%A6%E8%BD%BB%E6%AD%A6%E5%99%A8%E6%A8%A1%E6%8B%9F%E5%B0%84%E5%87%BB%E8%AE%BE%E5%A4%87%E9%87%87%E8%B4%AD%E9%A1%B9%E7%9B%AE%E6%8B%9B%E6%A0%87%E6%96%87%E4%BB%B6%20-%20%E5%89%AF%E6%9C%AC.PDF?Expires=1733478585&OSSAccessKeyId=TMP.3KhfwZc3kpT9TUmsb46yBDdnRq8bbENcEWBbZP8nLMgmSjVkjg9edpTPUQUsH8VXtvvg839Xbm8N5paYxPKvxCGqx3Vx4m&Signature=RYOo7tMEyahaMA3cSsf2kkf8co8%3D"
    local_file_name = r'C:\Users\Administrator\Documents\WeChat Files\wxid_d11awe5rp1y722\FileStorage\File\2024-12\ztbfile'
    downloaded = download_file(test_url, local_file_name)
    if not downloaded:
        print("下载文件失败或不支持的文件类型")
    downloaded_filepath, file_type = downloaded
    print(downloaded_filepath)
    print(file_type)
    # 检查文件类型
    if file_type == 4:
        print("error")