clerk/internal/cli/cmd_format.go (view raw)
| 1 | package cli |
| 2 | |
| 3 | import ( |
| 4 | "bytes" |
| 5 | "context" |
| 6 | "fmt" |
| 7 | "os" |
| 8 | |
| 9 | "github.com/urfave/cli/v3" |
| 10 | |
| 11 | "olexsmir.xyz/clerk/journal" |
| 12 | "olexsmir.xyz/clerk/journal/printer" |
| 13 | ) |
| 14 | |
| 15 | func (c *Cli) formatAction(ctx context.Context, cmd *cli.Command) error { |
| 16 | check := cmd.Bool("check") |
| 17 | diff := cmd.Bool("diff") |
| 18 | list := cmd.Bool("list") |
| 19 | write := cmd.Bool("write") |
| 20 | paths := cmd.StringArgs("journals") |
| 21 | |
| 22 | loader := journal.NewLoader() |
| 23 | if len(paths) == 0 { |
| 24 | pf, err := loadStdin(loader) |
| 25 | if err != nil { |
| 26 | return err |
| 27 | } |
| 28 | if len(pf.Errors) > 0 || len(pf.FileErrors) > 0 { |
| 29 | for _, e := range pf.Errors { |
| 30 | fmt.Fprintf(os.Stderr, "error: stdin: %s\n", e.Message) |
| 31 | } |
| 32 | for _, fe := range pf.FileErrors { |
| 33 | fmt.Fprintf(os.Stderr, "error: stdin: %s\n", fe.Message) |
| 34 | } |
| 35 | return fmt.Errorf("stdin: has errors, refusing to format") |
| 36 | } |
| 37 | return c.formatFile("stdin", pf, check, diff, list, write) |
| 38 | } |
| 39 | |
| 40 | files, err := resolvePaths(paths) |
| 41 | if err != nil { |
| 42 | return err |
| 43 | } |
| 44 | |
| 45 | var errs []error |
| 46 | for _, path := range files { |
| 47 | pf, err := loadFile(loader, path) |
| 48 | if err != nil { |
| 49 | fmt.Fprintf(os.Stderr, "error: %v\n", err) |
| 50 | errs = append(errs, err) |
| 51 | continue |
| 52 | } |
| 53 | if len(pf.Errors) > 0 || len(pf.FileErrors) > 0 { |
| 54 | for _, e := range pf.Errors { |
| 55 | fmt.Fprintf(os.Stderr, "error: %s: %s\n", path, e.Message) |
| 56 | } |
| 57 | for _, fe := range pf.FileErrors { |
| 58 | fmt.Fprintf(os.Stderr, "error: %s: %s\n", path, fe.Message) |
| 59 | } |
| 60 | errs = append(errs, fmt.Errorf("%s: has errors, refusing to format", path)) |
| 61 | continue |
| 62 | } |
| 63 | |
| 64 | if err := c.formatFile(path, pf, check, diff, list, write); err != nil { |
| 65 | fmt.Fprintf(os.Stderr, "error: %s: %v\n", path, err) |
| 66 | errs = append(errs, err) |
| 67 | } |
| 68 | } |
| 69 | if len(errs) > 0 { |
| 70 | return fmt.Errorf("format: %d error(s)", len(errs)) |
| 71 | } |
| 72 | return nil |
| 73 | } |
| 74 | |
| 75 | func (c *Cli) formatFile(path string, pf *journal.ParsedFile, check, wantDiff, list, write bool) error { |
| 76 | var buf bytes.Buffer |
| 77 | if err := printer.Fprint(&buf, pf.Ast); err != nil { |
| 78 | return fmt.Errorf("format: %w", err) |
| 79 | } |
| 80 | formatted := buf.Bytes() |
| 81 | changed := !bytes.Equal(pf.Src, formatted) |
| 82 | |
| 83 | switch { |
| 84 | case check: |
| 85 | if changed { |
| 86 | return fmt.Errorf("not formatted") |
| 87 | } |
| 88 | case list: |
| 89 | if changed { |
| 90 | fmt.Println(path) |
| 91 | } |
| 92 | case wantDiff: |
| 93 | if changed { |
| 94 | diffLines(path, pf.Src, formatted) |
| 95 | } |
| 96 | case write: |
| 97 | if changed { |
| 98 | if err := os.WriteFile(path, formatted, 0o644); err != nil { |
| 99 | return fmt.Errorf("write %s: %w", path, err) |
| 100 | } |
| 101 | } |
| 102 | default: |
| 103 | if _, err := os.Stdout.Write(formatted); err != nil { |
| 104 | return fmt.Errorf("write stdout: %w", err) |
| 105 | } |
| 106 | } |
| 107 | return nil |
| 108 | } |
| 109 | |
| 110 | func diffLines(path string, src, formatted []byte) { |
| 111 | fmt.Printf("--- %s\n+++ %s\n", path, path) |
| 112 | srcLines := bytes.Split(src, []byte("\n")) |
| 113 | fmtLines := bytes.Split(formatted, []byte("\n")) |
| 114 | lines := max(len(fmtLines), len(srcLines)) |
| 115 | for i := range lines { |
| 116 | var sLine, fLine []byte |
| 117 | if i < len(srcLines) { |
| 118 | sLine = srcLines[i] |
| 119 | } |
| 120 | if i < len(fmtLines) { |
| 121 | fLine = fmtLines[i] |
| 122 | } |
| 123 | if !bytes.Equal(sLine, fLine) { |
| 124 | if len(sLine) > 0 { |
| 125 | fmt.Printf("-%s\n", sLine) |
| 126 | } else { |
| 127 | fmt.Println("-") |
| 128 | } |
| 129 | if len(fLine) > 0 { |
| 130 | fmt.Printf("+%s\n", fLine) |
| 131 | } else { |
| 132 | fmt.Println("+") |
| 133 | } |
| 134 | } |
| 135 | } |
| 136 | } |