47 lines
1.2 KiB
Go
47 lines
1.2 KiB
Go
package cli
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import (
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"slices"
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state "v/state"
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)
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type Namespace struct {
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Label string
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Commands map[string]Command
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}
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// Command definition for CLI subcommands.
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type Command struct {
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Label string
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Handler func([]string, Flags, state.State) error
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Usage string
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Description string
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}
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// Registers a command.
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// This specifies a label that is used to route the user input to
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// the right command, a handler that is called when the label is used,
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// and usage/description details that get included in autogenerated help messaging.
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func (n *Namespace) AddCommand(label string, handler func([]string, Flags, state.State) error, usage string, description string) *Namespace {
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if n.Commands == nil {
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n.Commands = map[string]Command{}
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}
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n.Commands[label] = Command{Label: label, Handler: handler, Usage: usage, Description: description}
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return n
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}
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// Returns an alpha-ordered list of commands in the namespace.
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// The commands are returned as a list of command labels / actions.
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func (n *Namespace) ListCommands() []string {
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labels := []string{}
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for key := range n.Commands {
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labels = append(labels, key)
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}
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slices.Sort(labels)
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return labels
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}
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