如何将零结尾的字节数组转换为字符串? [英] How can I convert a zero-terminated byte array to string?

问题描述

我需要读取[100]byte来传输一堆string数据.

I need to read [100]byte to transfer a bunch of string data.

由于并非所有string的长度都恰好是100个字符，因此byte array的其余部分将填充0 s.

Because not all of the strings are precisely 100 characters long, the remaining part of the byte array is padded with 0s.

如果通过以下方式将[100]byte转换为string:string(byteArray[:])，则尾部0将显示为^@^@ s.

If I convert [100]byte to string by: string(byteArray[:]), the tailing 0s are displayed as ^@^@s.

在C中，string将在0处终止，那么在Go中将此byte array转换为string的最佳方法是什么?

In C, the string will terminate upon 0, so what's the best way to convert this byte array to string in Go?

推荐答案

将数据读取到字节片中的方法返回读取的字节数.您应该保存该数字，然后使用它来创建您的字符串.如果n是读取的字节数，则代码将如下所示:

Methods that read data into byte slices return the number of bytes read. You should save that number and then use it to create your string. If n is the number of bytes read, your code would look like this:

s := string(byteArray[:n])

要转换完整的字符串，可以使用:

To convert the full string, this can be used:

s := string(byteArray[:len(byteArray)])

这等效于:

s := string(byteArray)

如果由于某些原因您不知道n，则可以使用bytes包来查找它，前提是您的输入中没有嵌入空字符.

If for some reason you don't know n, you could use the bytes package to find it, assuming your input doesn't have a null character embedded in it.

n := bytes.Index(byteArray, []byte{0})

或者像icza所指出的那样，您可以使用以下代码:

Or as icza pointed out, you can use the code below:

n := bytes.IndexByte(byteArray, 0)

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