https://github.com/toyobayashi/getopt

GNU getopt Node-API binding.
https://github.com/toyobayashi/getopt

Last synced: 12 days ago
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GNU getopt Node-API binding.

• Host: GitHub
• URL: https://github.com/toyobayashi/getopt
• Owner: toyobayashi
• Created: 2021-06-27T12:51:51.000Z (over 3 years ago)
• Default Branch: main
• Last Pushed: 2021-06-29T08:58:23.000Z (over 3 years ago)
• Last Synced: 2024-11-05T22:46:19.245Z (2 months ago)
• Language: C
• Size: 27.3 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# getopt

GNU getopt Node-API binding.

```js

const binding = require('@tybys/getopt') // not published yet

;(function main (argc, argv) {

  let c

  while ((c = binding.getopt(argc, argv, 'abc:')) !== -1) {

    const char = String.fromCharCode(c)

    switch (char) {

      case 'a':

        console.log('option a')

        break

      case 'b':

        console.log('option b')

        break

      case 'c':

        console.log("option c with value '%s'", binding.optarg === null ? '(null)' : binding.optarg)

        break

      case '?':

        process.exit(1)

      default:

        console.log(`?? getopt returned character code ${c} ??`)

    }

  }

  if (binding.optind < argc) {

    process.stdout.write('non-option ARGV-elements: ')

    while (binding.optind < argc)

      process.stdout.write('%s ', argv[binding.optind++])

    process.stdout.write('\n')

  }

  process.exit(0)

})(process.argv.length - 1, process.argv.slice(1))

```

```ts

declare namespace mod {

  export const optarg: string | null;

  export let optind: number;

  export const optopt: number;

  export let opterr: number;

  export const no_argument: 0;

  export const required_argument: 1;

  export const optional_argument: 2;

  export type Pointer = { value: T };

  export class Option {

    name: string;

    has_arg: 0 | 1 | 2;

    flag: undefined | null | Pointer;

    val: number;

    constructor (name: string, hasArg?: 0 | 1 | 2, flag?: null | Pointer, val?: string | number);

  }

  export function getopt (argc: number, argv: string[], shortopts: string): number;

  export function getopt_long (argc: number, argv: string[], shortopts: string,

    longopts?: Option[], ind?: null | Pointer): number;

  export function getopt_long_only (argc: number, argv: string[], shortopts: string,

    longopts?: Option[], ind?: null | Pointer): number; 

}

export = mod;

```