python字节转换为C数组（例如xxd程序“ [英] python bytes to C array (like xxd program"

问题描述

在python3中，我有一些字节。我想将它们导出到C源代码。
在python之外，我使用 xxd -i binary_file命令。

In python3 I have some bytes. I want to export them to C source code. Outside python I use "xxd -i binary_file" command.

示例：

x = b'abc123'
print(bytes_to_c_arr(x))
# should output:
unsigned char x[] = { 0x61, 0x62, 0x63, 0x31, 0x32, 0x33 };

有没有现成的方法或方便的单线？我可以不用类型声明就可以删除内容，只需要内容字节即可。

Is there ready method or handy one-liner? I can do away without type declaration, only bytes for contents would suffice.

推荐答案

如果您不愿使用大写字母：

In case you want to use caps or not:

def bytes_to_c_arr(data, lowercase=True):
    return [format(b, '#04x' if lowercase else '#04X') for b in data]

x = b'abc123'
print("unsigned char x[] = {{{}}}".format(", ".join(bytes_to_c_arr(x))))
print("unsigned char x[] = {{{}}}".format(", ".join(bytes_to_c_arr(x, False))))

# output: unsigned char x[] = {0x61, 0x62, 0x63, 0x31, 0x32, 0x33}
#         unsigned char x[] = {0X61, 0X62, 0X63, 0X31, 0X32, 0X33}

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