我正在通過調用如下的os/exec包運行命令：out, err := Exec("ffprobe -i '/media/Name of File.mp3' -show_entries format=duration -v quiet -of csv=p=0", true, true)我編寫的用于執行命令行調用的函數是：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}該strings.Fields命令將命令拆分為空格，并將其用作字符串數組以傳遞給 exec.Command 函數。問題在于它將文件名分成不同的部分，因為filepath需要保持在一起的空間。即使我正確格式化了字符串數組，所以filepath它在一個部分中，exec.Command仍然會失敗，因為有一個空格。我需要能夠執行此腳本以將filepath空格作為一個參數。
2 回答
慕桂英3389331
TA貢獻2036條經驗 獲得超8個贊
您可以strings.Split(s, ":")在特殊字符上使用并使用反引號:進行切換 ，例如 這個工作示例（The Go Playground）："
package main
import (
"fmt"
"strings"
)
func main() {
command := `ffprobe : -i "/media/Name of File.mp3" : -show_entries format=duration : -v quiet : -of csv=p=0`
parts := strings.Split(command, ":")
for i := 0; i < len(parts); i++ {
fmt.Println(strings.Trim(parts[i], " "))
}
}
輸出：
ffprobe
-i "/media/Name of File.mp3"
-show_entries format=duration
-v quiet
-of csv=p=0
在（刪除）cmd.Args之后嘗試打?。篶md := exec.Command("ffprobe", s...).Output()
對于 _, v := 范圍 cmd.Args { fmt.Println(v) }
像這樣，找出你的參數發生了什么：
s := []string{"-i '/media/Name of File.mp3'", "-show_entries format=duration", "-v quiet", "-of csv=p=0"}
cmd := exec.Command("ffprobe", s...)
for _, v := range cmd.Args {
fmt.Println(v)
}
cmd.Args = []string{"ffprobe", "-i '/media/Name of File.mp3'", "-show_entries format=duration", "-v quiet", "-of csv=p=0"}
fmt.Println()
for _, v := range cmd.Args {
fmt.Println(v)
}
看：
// Command returns the Cmd struct to execute the named program with
// the given arguments.
//
// It sets only the Path and Args in the returned structure.
//
// If name contains no path separators, Command uses LookPath to
// resolve the path to a complete name if possible. Otherwise it uses
// name directly.
//
// The returned Cmd's Args field is constructed from the command name
// followed by the elements of arg, so arg should not include the
// command name itself. For example, Command("echo", "hello")
func Command(name string, arg ...string) *Cmd {
cmd := &Cmd{
Path: name,
Args: append([]string{name}, arg...),
}
if filepath.Base(name) == name {
if lp, err := LookPath(name); err != nil {
cmd.lookPathErr = err
} else {
cmd.Path = lp
}
}
return cmd
}
編輯3-試試這個
package main
import (
"fmt"
"os/exec"
)
func main() {
cmd := exec.Command(`ffprobe`, `-i "/media/Name of File.mp3"`, `-show_entries format=duration`, `-v quiet`, `-of csv=p=0`)
for _, v := range cmd.Args {
fmt.Println(v)
}
fmt.Println(cmd.Run())
}
慕妹3146593
TA貢獻1820條經驗 獲得超9個贊
嗯，我想通了。
var parts []string
preParts := strings.FieldsFunc(command, f)
for i := range preParts {
part := preParts[i]
parts = append(parts, strings.Replace(part, "'", "", -1))
}
我需要從傳遞給 exec.Command 函數的 arg 中刪除單引號。
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