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import { isCommandBuilderCallback } from './command.js';
import { assertNotStrictEqual } from './typings/common-types.js';
import * as templates from './completion-templates.js';
import { isPromise } from './utils/is-promise.js';
import { parseCommand } from './parse-command.js';
export class Completion {
constructor(yargs, usage, command, shim) {
var _a, _b, _c;
this.yargs = yargs;
this.usage = usage;
this.command = command;
this.shim = shim;
this.completionKey = 'get-yargs-completions';
this.aliases = null;
this.customCompletionFunction = null;
this.zshShell =
(_c = (((_a = this.shim.getEnv('SHELL')) === null || _a === void 0 ? void 0 : _a.includes('zsh')) ||
((_b = this.shim.getEnv('ZSH_NAME')) === null || _b === void 0 ? void 0 : _b.includes('zsh')))) !== null && _c !== void 0 ? _c : false;
}
defaultCompletion(args, argv, current, done) {
const handlers = this.command.getCommandHandlers();
for (let i = 0, ii = args.length; i < ii; ++i) {
if (handlers[args[i]] && handlers[args[i]].builder) {
const builder = handlers[args[i]].builder;
if (isCommandBuilderCallback(builder)) {
const y = this.yargs.getInternalMethods().reset();
builder(y, true);
return y.argv;
}
}
}
const completions = [];
this.commandCompletions(completions, args, current);
this.optionCompletions(completions, args, argv, current);
this.choicesCompletions(completions, args, argv, current);
done(null, completions);
}
commandCompletions(completions, args, current) {
const parentCommands = this.yargs
.getInternalMethods()
.getContext().commands;
if (!current.match(/^-/) &&
parentCommands[parentCommands.length - 1] !== current &&
!this.previousArgHasChoices(args)) {
this.usage.getCommands().forEach(usageCommand => {
const commandName = parseCommand(usageCommand[0]).cmd;
if (args.indexOf(commandName) === -1) {
if (!this.zshShell) {
completions.push(commandName);
}
else {
const desc = usageCommand[1] || '';
completions.push(commandName.replace(/:/g, '\\:') + ':' + desc);
}
}
});
}
}
optionCompletions(completions, args, argv, current) {
if ((current.match(/^-/) || (current === '' && completions.length === 0)) &&
!this.previousArgHasChoices(args)) {
const options = this.yargs.getOptions();
const positionalKeys = this.yargs.getGroups()[this.usage.getPositionalGroupName()] || [];
Object.keys(options.key).forEach(key => {
const negable = !!options.configuration['boolean-negation'] &&
options.boolean.includes(key);
const isPositionalKey = positionalKeys.includes(key);
if (!isPositionalKey &&
!this.argsContainKey(args, argv, key, negable)) {
this.completeOptionKey(key, completions, current);
if (negable && !!options.default[key])
this.completeOptionKey(`no-${key}`, completions, current);
}
});
}
}
choicesCompletions(completions, args, argv, current) {
if (this.previousArgHasChoices(args)) {
const choices = this.getPreviousArgChoices(args);
if (choices && choices.length > 0) {
completions.push(...choices);
}
}
}
getPreviousArgChoices(args) {
if (args.length < 1)
return;
let previousArg = args[args.length - 1];
let filter = '';
if (!previousArg.startsWith('--') && args.length > 1) {
filter = previousArg;
previousArg = args[args.length - 2];
}
if (!previousArg.startsWith('--'))
return;
const previousArgKey = previousArg.replace(/-/g, '');
const options = this.yargs.getOptions();
if (Object.keys(options.key).some(key => key === previousArgKey) &&
Array.isArray(options.choices[previousArgKey])) {
return options.choices[previousArgKey].filter(choice => !filter || choice.startsWith(filter));
}
}
previousArgHasChoices(args) {
const choices = this.getPreviousArgChoices(args);
return choices !== undefined && choices.length > 0;
}
argsContainKey(args, argv, key, negable) {
if (args.indexOf(`--${key}`) !== -1)
return true;
if (negable && args.indexOf(`--no-${key}`) !== -1)
return true;
if (this.aliases) {
for (const alias of this.aliases[key]) {
if (argv[alias] !== undefined)
return true;
}
}
return false;
}
completeOptionKey(key, completions, current) {
const descs = this.usage.getDescriptions();
const startsByTwoDashes = (s) => /^--/.test(s);
const isShortOption = (s) => /^[^0-9]$/.test(s);
const dashes = !startsByTwoDashes(current) && isShortOption(key) ? '-' : '--';
if (!this.zshShell) {
completions.push(dashes + key);
}
else {
const desc = descs[key] || '';
completions.push(dashes +
`${key.replace(/:/g, '\\:')}:${desc.replace('__yargsString__:', '')}`);
}
}
customCompletion(args, argv, current, done) {
assertNotStrictEqual(this.customCompletionFunction, null, this.shim);
if (isSyncCompletionFunction(this.customCompletionFunction)) {
const result = this.customCompletionFunction(current, argv);
if (isPromise(result)) {
return result
.then(list => {
this.shim.process.nextTick(() => {
done(null, list);
});
})
.catch(err => {
this.shim.process.nextTick(() => {
done(err, undefined);
});
});
}
return done(null, result);
}
else if (isFallbackCompletionFunction(this.customCompletionFunction)) {
return this.customCompletionFunction(current, argv, (onCompleted = done) => this.defaultCompletion(args, argv, current, onCompleted), completions => {
done(null, completions);
});
}
else {
return this.customCompletionFunction(current, argv, completions => {
done(null, completions);
});
}
}
getCompletion(args, done) {
const current = args.length ? args[args.length - 1] : '';
const argv = this.yargs.parse(args, true);
const completionFunction = this.customCompletionFunction
? (argv) => this.customCompletion(args, argv, current, done)
: (argv) => this.defaultCompletion(args, argv, current, done);
return isPromise(argv)
? argv.then(completionFunction)
: completionFunction(argv);
}
generateCompletionScript($0, cmd) {
let script = this.zshShell
? templates.completionZshTemplate
: templates.completionShTemplate;
const name = this.shim.path.basename($0);
if ($0.match(/\.js$/))
$0 = `./${$0}`;
script = script.replace(/{{app_name}}/g, name);
script = script.replace(/{{completion_command}}/g, cmd);
return script.replace(/{{app_path}}/g, $0);
}
registerFunction(fn) {
this.customCompletionFunction = fn;
}
setParsed(parsed) {
this.aliases = parsed.aliases;
}
}
export function completion(yargs, usage, command, shim) {
return new Completion(yargs, usage, command, shim);
}
function isSyncCompletionFunction(completionFunction) {
return completionFunction.length < 3;
}
function isFallbackCompletionFunction(completionFunction) {
return completionFunction.length > 3;
}
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