github.com/chyroc/anb@v0.3.0/internal/local_command.go (about)

     1  package internal
     2  
     3  import (
     4  	"bytes"
     5  	"fmt"
     6  	"io"
     7  	"os"
     8  	"os/exec"
     9  	"strings"
    10  
    11  	"github.com/chyroc/chaos"
    12  )
    13  
    14  type Command interface {
    15  	Md5File(file string) (string, error)
    16  }
    17  
    18  type LocalCommand struct{}
    19  
    20  func NewLocalCommand() *LocalCommand {
    21  	return &LocalCommand{}
    22  }
    23  
    24  func (r *LocalCommand) Md5File(file string) (string, error) {
    25  	out, err := r.RunCommand("md5sum " + file)
    26  	if err != nil {
    27  		return "", err
    28  	}
    29  	ss := strings.Split(out, " ")
    30  	if len(ss) >= 2 {
    31  		return ss[0], nil
    32  	}
    33  	return "", fmt.Errorf("md5sum response %q not valid", out)
    34  }
    35  
    36  func (r *LocalCommand) RunCommand(cmd string) (string, error) {
    37  	var bufout bytes.Buffer
    38  	var buferr bytes.Buffer
    39  	c := exec.Command("/bin/sh", "-c", cmd)
    40  	c.Stdout = &bufout
    41  	c.Stderr = &buferr
    42  	if err := c.Run(); err != nil {
    43  		ser := strings.TrimSpace(buferr.String())
    44  		if ser != "" {
    45  			return "", fmt.Errorf("run %q fail: %s", cmd, ser)
    46  		}
    47  		return bufout.String(), fmt.Errorf("run %q fail: %w", cmd, err)
    48  	}
    49  
    50  	return bufout.String(), nil
    51  }
    52  
    53  func (r *LocalCommand) RunCommandInPipe(cmd string) (string, error) {
    54  	bufout := new(bytes.Buffer)
    55  	buferr := new(bytes.Buffer)
    56  	c := exec.Command("/bin/sh", "-c", cmd)
    57  	c.Stdout = chaos.TeeWriter([]io.Writer{bufout, os.Stdout}, nil)
    58  	c.Stderr = chaos.TeeWriter([]io.Writer{buferr, os.Stderr}, nil)
    59  	if err := c.Run(); err != nil {
    60  		ser := strings.TrimSpace(buferr.String())
    61  		if ser != "" {
    62  			return "", fmt.Errorf("run %q fail: %s", cmd, ser)
    63  		}
    64  		return bufout.String(), fmt.Errorf("run %q fail: %w", cmd, err)
    65  	}
    66  
    67  	return bufout.String(), nil
    68  }