73 lines
1.5 KiB
V
73 lines
1.5 KiB
V
module main
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import cli { Command, Flag }
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import os
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fn main() {
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mut cmd := Command{
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name: 'cli'
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description: 'An example of the cli library.'
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version: '1.0.0'
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}
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mut greet_cmd := Command{
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name: 'greet'
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description: 'Prints greeting in different languages.'
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usage: '<name>'
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required_args: 1
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pre_execute: greet_pre_func
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execute: greet_func
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post_execute: greet_post_func
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}
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greet_cmd.add_flag(Flag{
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flag: .string
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required: true
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name: 'language'
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abbrev: 'l'
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description: 'Language of the message.'
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})
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greet_cmd.add_flag(Flag{
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flag: .int
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name: 'times'
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value: '3'
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description: 'Number of times the message gets printed.'
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})
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cmd.add_command(greet_cmd)
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cmd.parse(os.args)
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}
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fn greet_func(cmd Command) {
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language := cmd.flags.get_string('language') or {
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panic('Failed to get `language` flag: $err')
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}
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times := cmd.flags.get_int('times') or {
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panic('Failed to get `times` flag: $err')
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}
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name := cmd.args[0]
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for _ in 0 .. times {
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match language {
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'english', 'en' {
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println('Welcome $name')
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}
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'german', 'de' {
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println('Willkommen $name')
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}
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'dutch', 'nl' {
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println('Welkom $name')
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}
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else {
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println('Unsupported language')
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println('Supported languages are `english`, `german` and `dutch`.')
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break
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}
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}
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}
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}
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fn greet_pre_func(cmd Command) {
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println('This is a function running before the main function.\n')
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}
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fn greet_post_func(cmd Command) {
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println('\nThis is a function running after the main function.')
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}
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