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