在其中一部分中执行带空格的命令 [英] Executing command with spaces in one of the parts

问题描述

我正在通过 os/exec 程序包运行命令，如下所示:

I am running a command through the os/exec package that is called like this:

out, err := Exec("ffprobe -i '/media/Name of File.mp3' -show_entries format=duration -v quiet -of csv=p=0", true, true)

我编写的用于执行命令行调用的函数是:

The function I have written to execute command line calls is:

func Exec(command string, showOutput bool, returnOutput bool) (string, error) {
    log.Println("Running command: " + command)

    lastQuote := rune(0)
    f := func(c rune) bool {
        switch {
        case c == lastQuote:
            lastQuote = rune(0)
            return false
        case lastQuote != rune(0):
            return false
        case unicode.In(c, unicode.Quotation_Mark):
            lastQuote = c
            return false
        default:
            return unicode.IsSpace(c)
        }
    }

    parts := strings.FieldsFunc(command, f)
    //parts = ["ffprobe", "-i", "'/media/Name of File.mp3'", "-show_entries", "format=duration", "-v", "quiet", "-of", "csv=p=0"]
    if returnOutput {
        data, err := exec.Command(parts[0], parts[1:]...).Output()
        if err != nil {
            return "", err
        }
        return string(data), nil
    } else {
        cmd := exec.Command(parts[0], parts[1:]...)
        if showOutput {
            cmd.Stderr = os.Stderr
            cmd.Stdout = os.Stdout
        }
        err := cmd.Run()
        if err != nil {
            return "", err
        }
    }

    return "", nil
}

strings.Fields命令在空格中分割命令，该命令用作传递给exec.Command函数的字符串数组.问题在于，由于filepath需要保持在一起的空间，它会将文件名拆分为不同的部分.即使我正确设置了字符串数组的格式，使filepath处于同一部分，但由于存在空格，因此exec.Command仍然会失败.我需要能够执行此脚本，以将filepath用作带空格的一个参数.

The strings.Fields command splits the command on spaces and that is used as the string array to pass to the exec.Command function. The problem is that it is splitting the filename into different parts because of the space when that filepath needs to stay together. Even if I format the string array correctly so the filepath is in one part, the exec.Command still fails because there is a space. I need to be able to execute this script to honor the filepath as one argument with spaces.

推荐答案

好吧，我知道了.

var parts []string
preParts := strings.FieldsFunc(command, f)
for i := range preParts {
    part := preParts[i]
    parts = append(parts, strings.Replace(part, "'", "", -1))
}

我需要从传递给exec.Command函数的arg中删除单引号.

I needed to remove the single quotes from the arg passed into the exec.Command function.

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