viye: internal/plumbing/shell/shell.go (896d55427eac536be9d99d6c941215e4bf165ac1)

1

package shell

2

3

import (

4

	"context"

5

	"fmt"

6

	"os"

7

	"os/exec"

8

	"path/filepath"

9

	"strconv"

10

	"strings"

11

	"syscall"

12

	"time"

13

14

	"github.com/olexsmir/viye/internal/viye"

15

16

17

type Tool struct{}

18

19

func (Tool) Name() string { return "shell($, $$, ls, kill, mkdir)" }

20

func (Tool) Match(c *viye.Context) bool {

21

	return isCmd(c) || isBGCmd(c) || isLs(c) || isKill(c) || isMkdir(c)

22

23

24

func (Tool) Execute(c *viye.Context) (string, error) {

25

	switch {

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	case isCmd(c):

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		ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)

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		defer cancel()

29

30

		cmd := exec.CommandContext(ctx, "sh", "-c", strings.Join(c.Args, " "))

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		cmd.Dir = c.Dir

32

		out, err := cmd.CombinedOutput()

33

		if err != nil {

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			if ctx.Err() == context.DeadlineExceeded {

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				return "", fmt.Errorf("timeout: command exceeded 5s")

36

37

38

		return viye.FormatOutput(string(out)), nil

39

40

	case isBGCmd(c):

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		cmd := exec.Command("sh", "-c", strings.Join(c.Args, " "))

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		cmd.SysProcAttr = &syscall.SysProcAttr{Setpgid: true}

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		cmd.Dir = c.Dir

44

		if err := cmd.Start(); err != nil {

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			return "", err

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		return fmt.Sprintf("| pid: %d", cmd.Process.Pid), nil

48

49

	case isLs(c):

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		entries, err := os.ReadDir(c.Dir)

51

		if err != nil {

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			return "", err

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		var res []string

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		for _, e := range entries {

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			name := e.Name()

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			if e.IsDir() {

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				name += "/"

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			res = append(res, name)

61

62

		return viye.FormatOutputList(res), nil

63

64

	case isKill(c):

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		pid, err := strconv.Atoi(c.Args[0])

66

		if err != nil {

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			return "", fmt.Errorf("kill: invalid pid %q", c.Args[0])

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		p, err := os.FindProcess(pid)

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		if err != nil {

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			return "", fmt.Errorf("kill: %w", err)

72

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		if err := p.Kill(); err != nil {

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			return "", fmt.Errorf("kill: %w", err)

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		return "| done\n", nil

77

78

	case isMkdir(c):

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		path := filepath.Join(append([]string{c.Dir}, c.Args...)...)

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		if err := os.MkdirAll(path, 0o755); err != nil {

81

			return "", fmt.Errorf("mkdir: %w", err)

82

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		return "| created " + path + "\n", nil

84

85

	default:

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		panic("shouldn't have paniced")

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func isCmd(c *viye.Context) bool   { return c.Cmd == "$" }

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func isBGCmd(c *viye.Context) bool { return c.Cmd == "$$" }

92

func isLs(c *viye.Context) bool    { return c.Cmd == "ls" }

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func isKill(c *viye.Context) bool  { return c.Cmd == "kill" && len(c.Args) == 1 }

94

func isMkdir(c *viye.Context) bool { return c.Cmd == "mkdir" && len(c.Args) >= 1 }

1	package shell
2
3	import (
4	"context"
5	"fmt"
6	"os"
7	"os/exec"
8	"path/filepath"
9	"strconv"
10	"strings"
11	"syscall"
12	"time"
13
14	"github.com/olexsmir/viye/internal/viye"
15	)
16
17	type Tool struct{}
18
19	func (Tool) Name() string { return "shell($, $$, ls, kill, mkdir)" }
20	func (Tool) Match(c *viye.Context) bool {
21	return isCmd(c) \|\| isBGCmd(c) \|\| isLs(c) \|\| isKill(c) \|\| isMkdir(c)
22	}
23
24	func (Tool) Execute(c *viye.Context) (string, error) {
25	switch {
26	case isCmd(c):
27	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
28	defer cancel()
29
30	cmd := exec.CommandContext(ctx, "sh", "-c", strings.Join(c.Args, " "))
31	cmd.Dir = c.Dir
32	out, err := cmd.CombinedOutput()
33	if err != nil {
34	if ctx.Err() == context.DeadlineExceeded {
35	return "", fmt.Errorf("timeout: command exceeded 5s")
36	}
37	}
38	return viye.FormatOutput(string(out)), nil
39
40	case isBGCmd(c):
41	cmd := exec.Command("sh", "-c", strings.Join(c.Args, " "))
42	cmd.SysProcAttr = &syscall.SysProcAttr{Setpgid: true}
43	cmd.Dir = c.Dir
44	if err := cmd.Start(); err != nil {
45	return "", err
46	}
47	return fmt.Sprintf("\| pid: %d", cmd.Process.Pid), nil
48
49	case isLs(c):
50	entries, err := os.ReadDir(c.Dir)
51	if err != nil {
52	return "", err
53	}
54	var res []string
55	for _, e := range entries {
56	name := e.Name()
57	if e.IsDir() {
58	name += "/"
59	}
60	res = append(res, name)
61	}
62	return viye.FormatOutputList(res), nil
63
64	case isKill(c):
65	pid, err := strconv.Atoi(c.Args[0])
66	if err != nil {
67	return "", fmt.Errorf("kill: invalid pid %q", c.Args[0])
68	}
69	p, err := os.FindProcess(pid)
70	if err != nil {
71	return "", fmt.Errorf("kill: %w", err)
72	}
73	if err := p.Kill(); err != nil {
74	return "", fmt.Errorf("kill: %w", err)
75	}
76	return "\| done\n", nil
77
78	case isMkdir(c):
79	path := filepath.Join(append([]string{c.Dir}, c.Args...)...)
80	if err := os.MkdirAll(path, 0o755); err != nil {
81	return "", fmt.Errorf("mkdir: %w", err)
82	}
83	return "\| created " + path + "\n", nil
84
85	default:
86	panic("shouldn't have paniced")
87	}
88	}
89
90	func isCmd(c *viye.Context) bool { return c.Cmd == "$" }
91	func isBGCmd(c *viye.Context) bool { return c.Cmd == "$$" }
92	func isLs(c *viye.Context) bool { return c.Cmd == "ls" }
93	func isKill(c *viye.Context) bool { return c.Cmd == "kill" && len(c.Args) == 1 }
94	func isMkdir(c *viye.Context) bool { return c.Cmd == "mkdir" && len(c.Args) >= 1 }