Remove sed usage from docgen

Signed-off-by: Rohit Nayak <[email protected]>

go/cmd/internal/docgen/docgen.go

@@ -85,10 +85,6 @@ func GenerateMarkdownTree(cmd *cobra.Command, dir string) error {
 		return fmt.Errorf("failed to index doc (generated at %s) into proper position (%s): %w", rootDocPath, indexDocPath, err)
 	}
 
-	if err := anonymizeHomedir(indexDocPath); err != nil {
-		return fmt.Errorf("failed to anonymize homedir in help text for command %s: %w", indexDocPath, err)
-	}
-
 	if err := restructure(dir, dir, cmd.Name(), cmd.Commands()); err != nil {
 		return err
 	}
@@ -132,10 +128,6 @@ func restructure(rootDir string, dir string, name string, commands []*cobra.Comm
 				return fmt.Errorf("failed to move index doc for command %s with children: %w", fullCmdFilename, err)
 			}
 
-			if err := anonymizeHomedir(indexFile); err != nil {
-				return fmt.Errorf("failed to anonymize homedir in help text for command %s: %w", indexFile, err)
-			}
-
 			if err := restructure(rootDir, cmdDir, fullCmdFilename, children); err != nil {
 				return fmt.Errorf("failed to restructure child commands for %s: %w", fullCmdFilename, err)
 			}
@@ -158,59 +150,21 @@ func restructure(rootDir string, dir string, name string, commands []*cobra.Comm
 			if out, err := sed.CombinedOutput(); err != nil {
 				return fmt.Errorf("failed to rewrite links to parent command in child %s: %w (extra: %s)", newName, err, out)
 			}
-
-			if err := anonymizeHomedir(newName); err != nil {
-				return fmt.Errorf("failed to anonymize homedir in help text for command %s: %w", newName, err)
-			}
-		default:
-			// Top-level command without children. Nothing to restructure.
-			// However we still need to anonymize the homedir in the help text.
-			if cmd.Name() == "help" {
-				// all commands with children have their own "help" subcommand,
-				// which we do not generate docs for
-				continue
-			}
-			f := filepath.Join(dir, fullCmdFilename+".md")
-			_ = anonymizeHomedir(f) // it is possible that the file does not exist, so we ignore the error
-			continue
 		}
 	}
 
 	return nil
 }
 
 func newParentLinkSedCommand(parent string, file string) *exec.Cmd {
-	return exec.Command("sed", "-i", "", "-e", fmt.Sprintf("s:(./%s/):(../):i", parent), file)
+	return exec.Command("xyz", "-i", "-e", fmt.Sprintf("s:(./%s/):(../):i", parent), file)
 }
 
 var (
 	wd   string
 	once sync.Once
 )
 
-func anonymizeHomedir(file string) (err error) {
-	once.Do(func() {
-		// Only do this once per run.
-		wd, err = os.Getwd()
-	})
-	if err != nil {
-		return err
-	}
-	if _, err := os.Stat(file); err != nil {
-		return nil
-	}
-
-	// We're replacing the stuff inside the square brackets in the example sed
-	// below:
-	// 	's:Paths to search for config files in. (default \[.*\])$:Paths to search for config files in. (default \[<WORKDIR>\]):'
-	sed := exec.Command("sed", "-i", "", "-e", fmt.Sprintf("s:%s:%s:", wd, "<WORKDIR>"), file)
-	if out, err := sed.CombinedOutput(); err != nil {
-		return fmt.Errorf("%w: %s", err, out)
-	}
-
-	return nil
-}
-
 func recursivelyDisableAutoGenTags(root *cobra.Command) {
 	commands := []*cobra.Command{root}
 	for cmd := commands[0]; len(commands) > 0; cmd, commands = commands[0], commands[1:] {