# -*- coding: utf-8 -*-
"""
将 boostrapi18n.csv 转换为 boostrapi18n.tsv
- 单元格内真实换行写成字面 \\r\\n，制表符写成字面 \\t，避免破坏列
- 不用引号包裹字段，输出无首尾 "
"""
import csv
import os

def _normalize_cell(cell):
    """还原 CSV 双引号转义；真实换行/制表符改为字面 \\r\\n、\\t，避免输出时被加引号"""
    if not isinstance(cell, str):
        return cell
    s = cell.replace('""', '"')
    s = s.replace('\r\n', '\\r\\n').replace('\n', '\\r\\n').replace('\r', '\\r\\n')
    s = s.replace('\t', '\\t')  # 单元格内真实 tab 写成 \t，避免破坏列
    return s

def convert_csv_to_tsv():
    csv_file = 'boostrapi18n.csv'
    tsv_file = 'boostrapi18n.tsv'
    
    if not os.path.exists(csv_file):
        print(f'错误: 找不到文件 {csv_file}')
        return False
    
    try:
        with open(csv_file, 'r', encoding='utf-8') as f_in:
            reader = csv.reader(f_in)
            rows = [[_normalize_cell(cell) for cell in row] for row in reader]
        
        # 手动按 \t 拼接行，不经过会加引号的 writer，保证无首尾 "
        with open(tsv_file, 'w', encoding='utf-8', newline='') as f_out:
            for row in rows:
                f_out.write('\t'.join(row) + '\n')
        
        print(f'成功: {csv_file} 已转换为 {tsv_file}')
        return True
        
    except Exception as e:
        print(f'错误: 转换失败 - {str(e)}')
        return False

if __name__ == '__main__':
    convert_csv_to_tsv()