detectPackageName detects and sets PackageName if not already set.
(cfg *configuration)
| 382 | |
| 383 | // detectPackageName detects and sets PackageName if not already set. |
| 384 | func detectPackageName(cfg *configuration) error { |
| 385 | if cfg.PackageName != "" { |
| 386 | return nil |
| 387 | } |
| 388 | |
| 389 | if cfg.OutputFile != "" { |
| 390 | // Determine from the package name of the output file. |
| 391 | dir := filepath.Dir(cfg.PackageName) |
| 392 | cmd := exec.Command("go", "list", "-f", "{{.Name}}", dir) |
| 393 | out, err := cmd.CombinedOutput() |
| 394 | if err != nil { |
| 395 | outStr := string(out) |
| 396 | switch { |
| 397 | case strings.Contains(outStr, "expected 'package', found 'EOF'"): |
| 398 | // Redirecting the output to current directory which hasn't |
| 399 | // written anything yet, ignore. |
| 400 | case strings.HasPrefix(outStr, "no Go files in"): |
| 401 | // No go files yet, ignore. |
| 402 | default: |
| 403 | // Unexpected failure report. |
| 404 | return fmt.Errorf("detect package name for %q output: %q: %w", dir, string(out), err) |
| 405 | } |
| 406 | } else { |
| 407 | cfg.PackageName = string(out) |
| 408 | return nil |
| 409 | } |
| 410 | } |
| 411 | |
| 412 | // Fallback to determining from the spec file name. |
| 413 | parts := strings.Split(filepath.Base(flag.Arg(0)), ".") |
| 414 | cfg.PackageName = codegen.LowercaseFirstCharacter(codegen.ToCamelCase(parts[0])) |
| 415 | |
| 416 | return nil |
| 417 | } |
| 418 | |
| 419 | // updateConfigFromFlags updates a loaded configuration from flags. Flags |
| 420 | // override anything in the file. We generate errors for any unsupported |
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