python
import re


def extract_emails_from_file(filename):
    """从文件中提取所有邮箱地址"""
    with open(filename, 'r', encoding='utf-8') as file:
        content = file.read()
    # 使用正则表达式匹配邮箱地址
    emails = re.findall(r'\b[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Z|a-z]{2,}\b', content)
    return emails


def create_vcard(email):
    """为单个邮箱创建vCard字符串"""
    username = email.split('@')[0]
    vcard = f"""BEGIN:VCARD
VERSION:3.0
EMAIL:{email}
N:{username};{username};;;
X-RAMBLER-CONTACT-TYPE:manual
END:VCARD
"""
    return vcard


def generate_vcf(emails, output_filename):
    """生成包含所有邮箱的vcf文件"""
    with open(output_filename, 'w', encoding='utf-8') as vcf_file:
        for email in emails:
            vcard = create_vcard(email)
            vcf_file.write(vcard)
            vcf_file.write('\n')  # 每个vCard之间用空行分隔


def main():
    input_filename = input("请输入包含邮箱的文件名: ")
    output_filename = input("请输入输出的vcf文件名(例如: contacts.vcf): ")

    emails = extract_emails_from_file(input_filename)

    if not emails:
        print("没有找到任何邮箱地址。")
        return

    generate_vcf(emails, output_filename)
    print(f"成功生成 {len(emails)} 个联系人到 {output_filename}")


if __name__ == "__main__":
    main()