(ctx context.Context, args []string)
| 66 | } |
| 67 | |
| 68 | func (c *Subcommand) parse(ctx context.Context, args []string) error { |
| 69 | // Set flags |
| 70 | c.setFlags() |
| 71 | // Parse the arguments |
| 72 | if err := c.fset.Parse(args); err != nil { |
| 73 | // Print usage if the developer used -h or --help |
| 74 | if errors.Is(err, flag.ErrHelp) { |
| 75 | return c.printUsage() |
| 76 | } |
| 77 | return err |
| 78 | } |
| 79 | // Verify that all the flags have been set or have default values |
| 80 | if err := verifyFlags(c.flags); err != nil { |
| 81 | return err |
| 82 | } |
| 83 | // Check if the first argument is a subcommand |
| 84 | if sub, ok := c.commands[c.fset.Arg(0)]; ok { |
| 85 | return sub.parse(ctx, c.fset.Args()[1:]) |
| 86 | } |
| 87 | // Handle the remaining arguments |
| 88 | numArgs := len(c.args) |
| 89 | restArgs := c.fset.Args() |
| 90 | loop: |
| 91 | for i, arg := range restArgs { |
| 92 | if i >= numArgs { |
| 93 | if c.restArgs == nil { |
| 94 | return fmt.Errorf("unexpected %s", arg) |
| 95 | } |
| 96 | // Loop over the remaining unset args, appending them to restArgs |
| 97 | for _, arg := range restArgs[i:] { |
| 98 | c.restArgs.value.Set(arg) |
| 99 | } |
| 100 | break loop |
| 101 | } |
| 102 | if err := c.args[i].value.Set(arg); err != nil { |
| 103 | return err |
| 104 | } |
| 105 | } |
| 106 | // Verify that all the args have been set or have default values |
| 107 | if err := verifyArgs(c.args); err != nil { |
| 108 | return err |
| 109 | } |
| 110 | // Print usage if there's no run function defined |
| 111 | if c.run == nil { |
| 112 | if len(restArgs) == 0 { |
| 113 | return c.printUsage() |
| 114 | } |
| 115 | return fmt.Errorf("unexpected %s", c.fset.Arg(0)) |
| 116 | } |
| 117 | if err := c.run(ctx); err != nil { |
| 118 | // Support explicitly printing usage |
| 119 | if errors.Is(err, flag.ErrHelp) { |
| 120 | return c.printUsage() |
| 121 | } |
| 122 | return err |
| 123 | } |
| 124 | return nil |
| 125 | } |
no test coverage detected