viye/internal/plumbing/makefile/makefile.go (view raw)
| 1 | package makefile |
| 2 | |
| 3 | import ( |
| 4 | "bufio" |
| 5 | "bytes" |
| 6 | "context" |
| 7 | "errors" |
| 8 | "os" |
| 9 | "os/exec" |
| 10 | "path/filepath" |
| 11 | "slices" |
| 12 | "strings" |
| 13 | |
| 14 | "github.com/olexsmir/viye/internal/viye" |
| 15 | ) |
| 16 | |
| 17 | type Tool struct{} |
| 18 | |
| 19 | func (Tool) Name() string { return "make" } |
| 20 | func (Tool) Match(c *viye.Context) bool { return c.Cmd == "make" } |
| 21 | func (Tool) Execute(c *viye.Context) (string, error) { |
| 22 | fpath, found := findMakefile(c) |
| 23 | if !found { |
| 24 | return "", errors.New("makefile not found") |
| 25 | } |
| 26 | |
| 27 | contents, err := os.ReadFile(fpath) |
| 28 | if err != nil { |
| 29 | return "", err |
| 30 | } |
| 31 | |
| 32 | tasks, err := listTasksFromMakefile(contents) |
| 33 | if err != nil { |
| 34 | return "", err |
| 35 | } |
| 36 | |
| 37 | switch len(c.Args) { |
| 38 | case 0: // list make file tasks |
| 39 | return viye.FormatBulletList(tasks), nil |
| 40 | |
| 41 | case 1: // run specified task |
| 42 | if !slices.Contains(tasks, c.Args[0]) { |
| 43 | return "", errors.New("task not found") |
| 44 | } |
| 45 | |
| 46 | ctx, cancel := context.WithTimeout(context.Background(), viye.Timeout) |
| 47 | defer cancel() |
| 48 | |
| 49 | cmd := exec.CommandContext(ctx, "make", c.Args[0]) |
| 50 | cmd.Dir = c.Dir |
| 51 | out, err := cmd.Output() |
| 52 | if ctx.Err() == context.DeadlineExceeded { |
| 53 | return "", viye.ErrTimeout |
| 54 | } |
| 55 | if err != nil { |
| 56 | return "", err |
| 57 | } |
| 58 | return viye.FormatOutput(out), nil |
| 59 | |
| 60 | default: |
| 61 | return "", errors.New("invalid command, make usage: make [task]") |
| 62 | } |
| 63 | } |
| 64 | |
| 65 | func findMakefile(c *viye.Context) (name string, found bool) { |
| 66 | for _, mfile := range []string{"makefile", "Makefile", "GNUMakefile"} { |
| 67 | path := filepath.Join(c.Dir, mfile) |
| 68 | if _, err := os.Stat(path); err == nil { |
| 69 | return path, true |
| 70 | } |
| 71 | } |
| 72 | return "", false |
| 73 | } |
| 74 | |
| 75 | func listTasksFromMakefile(contents []byte) ([]string, error) { |
| 76 | var tasks []string |
| 77 | scanner := bufio.NewScanner(bytes.NewReader(contents)) |
| 78 | for scanner.Scan() { |
| 79 | line := scanner.Text() |
| 80 | |
| 81 | if len(line) == 0 || line[0] == '\t' || line[0] == ' ' { |
| 82 | continue |
| 83 | } |
| 84 | if strings.HasPrefix(line, "#") { // comments |
| 85 | continue |
| 86 | } |
| 87 | |
| 88 | colon := strings.IndexByte(line, ':') |
| 89 | if colon <= 0 { |
| 90 | continue |
| 91 | } |
| 92 | |
| 93 | name := strings.TrimSpace(line[:colon]) |
| 94 | if name == "" { |
| 95 | continue |
| 96 | } |
| 97 | |
| 98 | rest := line[colon+1:] |
| 99 | if strings.HasPrefix(rest, "=") { // variable assigments |
| 100 | continue |
| 101 | } |
| 102 | if strings.HasPrefix(rest, ":") { // ::= or double-colon rule |
| 103 | rest = rest[1:] |
| 104 | if strings.HasPrefix(rest, "=") { |
| 105 | continue |
| 106 | } |
| 107 | } |
| 108 | |
| 109 | if strings.Contains(name, "%") || strings.HasPrefix(name, ".") { // pattern rules and special targets |
| 110 | continue |
| 111 | } |
| 112 | |
| 113 | for n := range strings.FieldsSeq(name) { |
| 114 | tasks = append(tasks, n) |
| 115 | } |
| 116 | } |
| 117 | return tasks, nil |
| 118 | } |