forked from M3-Academy/challenge-algorithms-v2.0
448 lines
19 KiB
JavaScript
448 lines
19 KiB
JavaScript
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import { assertNotStrictEqual, } from './typings/common-types.js';
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import { isPromise } from './utils/is-promise.js';
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import { applyMiddleware, commandMiddlewareFactory, } from './middleware.js';
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import { parseCommand } from './parse-command.js';
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import { isYargsInstance, } from './yargs-factory.js';
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import { maybeAsyncResult } from './utils/maybe-async-result.js';
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import whichModule from './utils/which-module.js';
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const DEFAULT_MARKER = /(^\*)|(^\$0)/;
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export class CommandInstance {
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constructor(usage, validation, globalMiddleware, shim) {
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this.requireCache = new Set();
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this.handlers = {};
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this.aliasMap = {};
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this.frozens = [];
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this.shim = shim;
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this.usage = usage;
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this.globalMiddleware = globalMiddleware;
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this.validation = validation;
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}
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addDirectory(dir, req, callerFile, opts) {
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opts = opts || {};
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if (typeof opts.recurse !== 'boolean')
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opts.recurse = false;
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if (!Array.isArray(opts.extensions))
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opts.extensions = ['js'];
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const parentVisit = typeof opts.visit === 'function' ? opts.visit : (o) => o;
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opts.visit = (obj, joined, filename) => {
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const visited = parentVisit(obj, joined, filename);
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if (visited) {
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if (this.requireCache.has(joined))
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return visited;
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else
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this.requireCache.add(joined);
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this.addHandler(visited);
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}
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return visited;
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};
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this.shim.requireDirectory({ require: req, filename: callerFile }, dir, opts);
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}
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addHandler(cmd, description, builder, handler, commandMiddleware, deprecated) {
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let aliases = [];
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const middlewares = commandMiddlewareFactory(commandMiddleware);
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handler = handler || (() => { });
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if (Array.isArray(cmd)) {
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if (isCommandAndAliases(cmd)) {
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[cmd, ...aliases] = cmd;
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}
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else {
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for (const command of cmd) {
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this.addHandler(command);
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}
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}
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}
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else if (isCommandHandlerDefinition(cmd)) {
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let command = Array.isArray(cmd.command) || typeof cmd.command === 'string'
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? cmd.command
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: this.moduleName(cmd);
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if (cmd.aliases)
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command = [].concat(command).concat(cmd.aliases);
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this.addHandler(command, this.extractDesc(cmd), cmd.builder, cmd.handler, cmd.middlewares, cmd.deprecated);
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return;
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}
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else if (isCommandBuilderDefinition(builder)) {
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this.addHandler([cmd].concat(aliases), description, builder.builder, builder.handler, builder.middlewares, builder.deprecated);
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return;
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}
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if (typeof cmd === 'string') {
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const parsedCommand = parseCommand(cmd);
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aliases = aliases.map(alias => parseCommand(alias).cmd);
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let isDefault = false;
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const parsedAliases = [parsedCommand.cmd].concat(aliases).filter(c => {
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if (DEFAULT_MARKER.test(c)) {
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isDefault = true;
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return false;
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}
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return true;
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});
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if (parsedAliases.length === 0 && isDefault)
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parsedAliases.push('$0');
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if (isDefault) {
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parsedCommand.cmd = parsedAliases[0];
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aliases = parsedAliases.slice(1);
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cmd = cmd.replace(DEFAULT_MARKER, parsedCommand.cmd);
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}
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aliases.forEach(alias => {
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this.aliasMap[alias] = parsedCommand.cmd;
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});
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if (description !== false) {
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this.usage.command(cmd, description, isDefault, aliases, deprecated);
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}
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this.handlers[parsedCommand.cmd] = {
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original: cmd,
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description,
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handler,
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builder: builder || {},
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middlewares,
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deprecated,
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demanded: parsedCommand.demanded,
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optional: parsedCommand.optional,
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};
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if (isDefault)
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this.defaultCommand = this.handlers[parsedCommand.cmd];
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}
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}
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getCommandHandlers() {
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return this.handlers;
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}
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getCommands() {
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return Object.keys(this.handlers).concat(Object.keys(this.aliasMap));
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}
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hasDefaultCommand() {
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return !!this.defaultCommand;
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}
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runCommand(command, yargs, parsed, commandIndex, helpOnly, helpOrVersionSet) {
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const commandHandler = this.handlers[command] ||
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this.handlers[this.aliasMap[command]] ||
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this.defaultCommand;
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const currentContext = yargs.getInternalMethods().getContext();
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const parentCommands = currentContext.commands.slice();
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const isDefaultCommand = !command;
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if (command) {
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currentContext.commands.push(command);
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currentContext.fullCommands.push(commandHandler.original);
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}
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const builderResult = this.applyBuilderUpdateUsageAndParse(isDefaultCommand, commandHandler, yargs, parsed.aliases, parentCommands, commandIndex, helpOnly, helpOrVersionSet);
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return isPromise(builderResult)
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? builderResult.then(result => this.applyMiddlewareAndGetResult(isDefaultCommand, commandHandler, result.innerArgv, currentContext, helpOnly, result.aliases, yargs))
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: this.applyMiddlewareAndGetResult(isDefaultCommand, commandHandler, builderResult.innerArgv, currentContext, helpOnly, builderResult.aliases, yargs);
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}
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applyBuilderUpdateUsageAndParse(isDefaultCommand, commandHandler, yargs, aliases, parentCommands, commandIndex, helpOnly, helpOrVersionSet) {
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const builder = commandHandler.builder;
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let innerYargs = yargs;
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if (isCommandBuilderCallback(builder)) {
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const builderOutput = builder(yargs.getInternalMethods().reset(aliases), helpOrVersionSet);
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if (isPromise(builderOutput)) {
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return builderOutput.then(output => {
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innerYargs = isYargsInstance(output) ? output : yargs;
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return this.parseAndUpdateUsage(isDefaultCommand, commandHandler, innerYargs, parentCommands, commandIndex, helpOnly);
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});
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}
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}
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else if (isCommandBuilderOptionDefinitions(builder)) {
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innerYargs = yargs.getInternalMethods().reset(aliases);
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Object.keys(commandHandler.builder).forEach(key => {
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innerYargs.option(key, builder[key]);
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});
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}
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return this.parseAndUpdateUsage(isDefaultCommand, commandHandler, innerYargs, parentCommands, commandIndex, helpOnly);
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}
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parseAndUpdateUsage(isDefaultCommand, commandHandler, innerYargs, parentCommands, commandIndex, helpOnly) {
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if (isDefaultCommand)
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innerYargs.getInternalMethods().getUsageInstance().unfreeze(true);
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if (this.shouldUpdateUsage(innerYargs)) {
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innerYargs
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.getInternalMethods()
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.getUsageInstance()
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.usage(this.usageFromParentCommandsCommandHandler(parentCommands, commandHandler), commandHandler.description);
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}
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const innerArgv = innerYargs
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.getInternalMethods()
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.runYargsParserAndExecuteCommands(null, undefined, true, commandIndex, helpOnly);
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return isPromise(innerArgv)
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? innerArgv.then(argv => ({
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aliases: innerYargs.parsed.aliases,
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innerArgv: argv,
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}))
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: {
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aliases: innerYargs.parsed.aliases,
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innerArgv: innerArgv,
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};
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}
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shouldUpdateUsage(yargs) {
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return (!yargs.getInternalMethods().getUsageInstance().getUsageDisabled() &&
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yargs.getInternalMethods().getUsageInstance().getUsage().length === 0);
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}
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usageFromParentCommandsCommandHandler(parentCommands, commandHandler) {
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const c = DEFAULT_MARKER.test(commandHandler.original)
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? commandHandler.original.replace(DEFAULT_MARKER, '').trim()
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: commandHandler.original;
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const pc = parentCommands.filter(c => {
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return !DEFAULT_MARKER.test(c);
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});
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pc.push(c);
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return `$0 ${pc.join(' ')}`;
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}
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handleValidationAndGetResult(isDefaultCommand, commandHandler, innerArgv, currentContext, aliases, yargs, middlewares, positionalMap) {
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if (!yargs.getInternalMethods().getHasOutput()) {
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const validation = yargs
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.getInternalMethods()
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.runValidation(aliases, positionalMap, yargs.parsed.error, isDefaultCommand);
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innerArgv = maybeAsyncResult(innerArgv, result => {
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validation(result);
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return result;
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});
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}
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if (commandHandler.handler && !yargs.getInternalMethods().getHasOutput()) {
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yargs.getInternalMethods().setHasOutput();
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const populateDoubleDash = !!yargs.getOptions().configuration['populate--'];
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yargs
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.getInternalMethods()
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.postProcess(innerArgv, populateDoubleDash, false, false);
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innerArgv = applyMiddleware(innerArgv, yargs, middlewares, false);
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innerArgv = maybeAsyncResult(innerArgv, result => {
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const handlerResult = commandHandler.handler(result);
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return isPromise(handlerResult)
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? handlerResult.then(() => result)
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: result;
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});
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if (!isDefaultCommand) {
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yargs.getInternalMethods().getUsageInstance().cacheHelpMessage();
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}
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if (isPromise(innerArgv) &&
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!yargs.getInternalMethods().hasParseCallback()) {
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innerArgv.catch(error => {
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try {
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yargs.getInternalMethods().getUsageInstance().fail(null, error);
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}
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catch (_err) {
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}
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});
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}
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}
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if (!isDefaultCommand) {
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currentContext.commands.pop();
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currentContext.fullCommands.pop();
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}
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return innerArgv;
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}
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applyMiddlewareAndGetResult(isDefaultCommand, commandHandler, innerArgv, currentContext, helpOnly, aliases, yargs) {
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let positionalMap = {};
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if (helpOnly)
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return innerArgv;
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if (!yargs.getInternalMethods().getHasOutput()) {
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positionalMap = this.populatePositionals(commandHandler, innerArgv, currentContext, yargs);
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}
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const middlewares = this.globalMiddleware
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.getMiddleware()
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.slice(0)
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.concat(commandHandler.middlewares);
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const maybePromiseArgv = applyMiddleware(innerArgv, yargs, middlewares, true);
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return isPromise(maybePromiseArgv)
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? maybePromiseArgv.then(resolvedInnerArgv => this.handleValidationAndGetResult(isDefaultCommand, commandHandler, resolvedInnerArgv, currentContext, aliases, yargs, middlewares, positionalMap))
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: this.handleValidationAndGetResult(isDefaultCommand, commandHandler, maybePromiseArgv, currentContext, aliases, yargs, middlewares, positionalMap);
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}
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populatePositionals(commandHandler, argv, context, yargs) {
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argv._ = argv._.slice(context.commands.length);
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const demanded = commandHandler.demanded.slice(0);
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const optional = commandHandler.optional.slice(0);
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const positionalMap = {};
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this.validation.positionalCount(demanded.length, argv._.length);
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while (demanded.length) {
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const demand = demanded.shift();
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this.populatePositional(demand, argv, positionalMap);
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}
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while (optional.length) {
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const maybe = optional.shift();
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this.populatePositional(maybe, argv, positionalMap);
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}
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argv._ = context.commands.concat(argv._.map(a => '' + a));
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this.postProcessPositionals(argv, positionalMap, this.cmdToParseOptions(commandHandler.original), yargs);
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return positionalMap;
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}
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populatePositional(positional, argv, positionalMap) {
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const cmd = positional.cmd[0];
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if (positional.variadic) {
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positionalMap[cmd] = argv._.splice(0).map(String);
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}
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else {
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if (argv._.length)
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positionalMap[cmd] = [String(argv._.shift())];
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}
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}
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cmdToParseOptions(cmdString) {
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const parseOptions = {
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array: [],
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default: {},
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alias: {},
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demand: {},
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};
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const parsed = parseCommand(cmdString);
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parsed.demanded.forEach(d => {
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const [cmd, ...aliases] = d.cmd;
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if (d.variadic) {
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parseOptions.array.push(cmd);
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parseOptions.default[cmd] = [];
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}
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parseOptions.alias[cmd] = aliases;
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parseOptions.demand[cmd] = true;
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});
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parsed.optional.forEach(o => {
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const [cmd, ...aliases] = o.cmd;
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if (o.variadic) {
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parseOptions.array.push(cmd);
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parseOptions.default[cmd] = [];
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}
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parseOptions.alias[cmd] = aliases;
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});
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return parseOptions;
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}
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postProcessPositionals(argv, positionalMap, parseOptions, yargs) {
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const options = Object.assign({}, yargs.getOptions());
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options.default = Object.assign(parseOptions.default, options.default);
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for (const key of Object.keys(parseOptions.alias)) {
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options.alias[key] = (options.alias[key] || []).concat(parseOptions.alias[key]);
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}
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options.array = options.array.concat(parseOptions.array);
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options.config = {};
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const unparsed = [];
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Object.keys(positionalMap).forEach(key => {
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positionalMap[key].map(value => {
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if (options.configuration['unknown-options-as-args'])
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options.key[key] = true;
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unparsed.push(`--${key}`);
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unparsed.push(value);
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});
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});
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if (!unparsed.length)
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return;
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const config = Object.assign({}, options.configuration, {
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'populate--': false,
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});
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const parsed = this.shim.Parser.detailed(unparsed, Object.assign({}, options, {
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configuration: config,
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}));
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if (parsed.error) {
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yargs
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.getInternalMethods()
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.getUsageInstance()
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.fail(parsed.error.message, parsed.error);
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}
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else {
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const positionalKeys = Object.keys(positionalMap);
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Object.keys(positionalMap).forEach(key => {
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positionalKeys.push(...parsed.aliases[key]);
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});
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Object.keys(parsed.argv).forEach(key => {
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if (positionalKeys.includes(key)) {
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if (!positionalMap[key])
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positionalMap[key] = parsed.argv[key];
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if (!this.isInConfigs(yargs, key) &&
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!this.isDefaulted(yargs, key) &&
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Object.prototype.hasOwnProperty.call(argv, key) &&
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Object.prototype.hasOwnProperty.call(parsed.argv, key) &&
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(Array.isArray(argv[key]) || Array.isArray(parsed.argv[key]))) {
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argv[key] = [].concat(argv[key], parsed.argv[key]);
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}
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|
|
else {
|
||
|
|
argv[key] = parsed.argv[key];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
});
|
||
|
|
}
|
||
|
|
}
|
||
|
|
isDefaulted(yargs, key) {
|
||
|
|
const { default: defaults } = yargs.getOptions();
|
||
|
|
return (Object.prototype.hasOwnProperty.call(defaults, key) ||
|
||
|
|
Object.prototype.hasOwnProperty.call(defaults, this.shim.Parser.camelCase(key)));
|
||
|
|
}
|
||
|
|
isInConfigs(yargs, key) {
|
||
|
|
const { configObjects } = yargs.getOptions();
|
||
|
|
return (configObjects.some(c => Object.prototype.hasOwnProperty.call(c, key)) ||
|
||
|
|
configObjects.some(c => Object.prototype.hasOwnProperty.call(c, this.shim.Parser.camelCase(key))));
|
||
|
|
}
|
||
|
|
runDefaultBuilderOn(yargs) {
|
||
|
|
if (!this.defaultCommand)
|
||
|
|
return;
|
||
|
|
if (this.shouldUpdateUsage(yargs)) {
|
||
|
|
const commandString = DEFAULT_MARKER.test(this.defaultCommand.original)
|
||
|
|
? this.defaultCommand.original
|
||
|
|
: this.defaultCommand.original.replace(/^[^[\]<>]*/, '$0 ');
|
||
|
|
yargs
|
||
|
|
.getInternalMethods()
|
||
|
|
.getUsageInstance()
|
||
|
|
.usage(commandString, this.defaultCommand.description);
|
||
|
|
}
|
||
|
|
const builder = this.defaultCommand.builder;
|
||
|
|
if (isCommandBuilderCallback(builder)) {
|
||
|
|
return builder(yargs, true);
|
||
|
|
}
|
||
|
|
else if (!isCommandBuilderDefinition(builder)) {
|
||
|
|
Object.keys(builder).forEach(key => {
|
||
|
|
yargs.option(key, builder[key]);
|
||
|
|
});
|
||
|
|
}
|
||
|
|
return undefined;
|
||
|
|
}
|
||
|
|
moduleName(obj) {
|
||
|
|
const mod = whichModule(obj);
|
||
|
|
if (!mod)
|
||
|
|
throw new Error(`No command name given for module: ${this.shim.inspect(obj)}`);
|
||
|
|
return this.commandFromFilename(mod.filename);
|
||
|
|
}
|
||
|
|
commandFromFilename(filename) {
|
||
|
|
return this.shim.path.basename(filename, this.shim.path.extname(filename));
|
||
|
|
}
|
||
|
|
extractDesc({ describe, description, desc }) {
|
||
|
|
for (const test of [describe, description, desc]) {
|
||
|
|
if (typeof test === 'string' || test === false)
|
||
|
|
return test;
|
||
|
|
assertNotStrictEqual(test, true, this.shim);
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
freeze() {
|
||
|
|
this.frozens.push({
|
||
|
|
handlers: this.handlers,
|
||
|
|
aliasMap: this.aliasMap,
|
||
|
|
defaultCommand: this.defaultCommand,
|
||
|
|
});
|
||
|
|
}
|
||
|
|
unfreeze() {
|
||
|
|
const frozen = this.frozens.pop();
|
||
|
|
assertNotStrictEqual(frozen, undefined, this.shim);
|
||
|
|
({
|
||
|
|
handlers: this.handlers,
|
||
|
|
aliasMap: this.aliasMap,
|
||
|
|
defaultCommand: this.defaultCommand,
|
||
|
|
} = frozen);
|
||
|
|
}
|
||
|
|
reset() {
|
||
|
|
this.handlers = {};
|
||
|
|
this.aliasMap = {};
|
||
|
|
this.defaultCommand = undefined;
|
||
|
|
this.requireCache = new Set();
|
||
|
|
return this;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
export function command(usage, validation, globalMiddleware, shim) {
|
||
|
|
return new CommandInstance(usage, validation, globalMiddleware, shim);
|
||
|
|
}
|
||
|
|
export function isCommandBuilderDefinition(builder) {
|
||
|
|
return (typeof builder === 'object' &&
|
||
|
|
!!builder.builder &&
|
||
|
|
typeof builder.handler === 'function');
|
||
|
|
}
|
||
|
|
function isCommandAndAliases(cmd) {
|
||
|
|
return cmd.every(c => typeof c === 'string');
|
||
|
|
}
|
||
|
|
export function isCommandBuilderCallback(builder) {
|
||
|
|
return typeof builder === 'function';
|
||
|
|
}
|
||
|
|
function isCommandBuilderOptionDefinitions(builder) {
|
||
|
|
return typeof builder === 'object';
|
||
|
|
}
|
||
|
|
export function isCommandHandlerDefinition(cmd) {
|
||
|
|
return typeof cmd === 'object' && !Array.isArray(cmd);
|
||
|
|
}
|