使用 python 将 "\r\n" 转换为 "\n"

众所周知, Linux 下没有 "\r\n", 而 windows 下文本工具默认打开文件时使用 t 模式, 使得写入一行结尾的换行符为 "\r\n", 这样造成了一个极大的麻烦, 直接编辑的 sh 脚本程序无法在 Linux 中运行.

此工具可快速将解决此烦恼.

dosToUnix.py

"""
将 "\r\n" 转换为 "\n"
"""
import functools
import argparse
import os.path

def main():
    parser = argparse.ArgumentParser()
    parser.add_argument("-file", dest = "fileName")
    args = parser.parse_args()
    fileName = args.fileName
    assert fileName and os.path.exists(fileName), "file not found"

    with open(fileName, "rb") as f:
        data = bytearray(os.path.getsize(fileName))
        f.readinto(data)
        # print(data)
        data = data.replace(b"\r\n", b"\n")

    with open(fileName, "wb") as f:
        # print(data)
        f.write(data)

if __name__ == "__main__":
    main()

import sys
import os

def main():
    filename = sys.argv[1] if len(sys.argv) > 1 else ""
    assert filename and os.path.exists(filename)

    with open(filename, "rb") as fp:
        data = fp.read()

    if not data:
        return

    data = data.replace(b"\r\n", b"\n")
    data = data.replace(b"\r\x00\n\x00", b"\n\x00")

    with open(filename, "wb") as fp:
        fp.write(data)

if __name__ == '__main__':
    main()