103 lines
4.2 KiB
JavaScript
103 lines
4.2 KiB
JavaScript
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/*
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Copyright (c) 2012, Yahoo! Inc. All rights reserved.
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Copyrights licensed under the New BSD License. See the accompanying LICENSE file for terms.
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*/
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var Command = require('./index.js'),
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util = require('util'),
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formatOption = require('../util/help-formatter').formatOption,
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VERSION = require('../../index').VERSION,
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configuration = require('../config'),
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yaml = require('js-yaml'),
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formatPara = require('../util/help-formatter').formatPara;
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function showConfigHelp(toolName) {
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console.error('\nConfiguring ' + toolName);
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console.error('====================');
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console.error('\n' +
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formatPara(toolName + ' can be configured globally using a .istanbul.yml YAML file ' +
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'at the root of your source tree. Every command also accepts a --config=<config-file> argument to ' +
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'customize its location per command. The alternate config file can be in YAML, JSON or node.js ' +
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'(exporting the config object).'));
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console.error('\n' +
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formatPara('The config file currently has four sections for instrumentation, reporting, hooks, ' +
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'and checking. Note that certain commands (like `cover`) use information from multiple sections.'));
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console.error('\n' +
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formatPara('Keys in the config file usually correspond to command line parameters with the same name. ' +
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'The verbose option for every command shows you the exact configuration used. See the api ' +
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'docs for an explanation of each key.'));
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console.error('\n' +
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formatPara('You only need to specify the keys that you want to override. Your overrides will be merged ' +
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'with the default config.'));
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console.error('\nThe default configuration is as follows:\n');
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console.error(yaml.safeDump(configuration.defaultConfig(), { indent: 4, flowLevel: 3 }));
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console.error('\n' +
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formatPara('The `watermarks` section does not have a command line equivalent. It allows you to set up ' +
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'low and high watermark percentages for reporting. These are honored by all reporters that colorize ' +
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'their output based on low/ medium/ high coverage.'));
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console.error('\n' +
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formatPara('The `reportConfig` section allows you to configure each report format independently ' +
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'and has no command-line equivalent either.'));
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console.error('\n' +
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formatPara('The `check` section configures minimum threshold enforcement for coverage results. ' +
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'`global` applies to all files together and `each` on a per-file basis. A list of files can ' +
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'be excluded from enforcement relative to root via the `exclude` property.'));
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console.error('');
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}
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function HelpCommand() {
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Command.call(this);
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}
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HelpCommand.TYPE = 'help';
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util.inherits(HelpCommand, Command);
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Command.mix(HelpCommand, {
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synopsis: function () {
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return "shows help";
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},
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usage: function () {
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console.error('\nUsage: ' + this.toolName() + ' ' + this.type() + ' config | <command>\n');
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console.error('`config` provides help with istanbul configuration\n');
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console.error('Available commands are:\n');
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var commandObj;
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Command.getCommandList().forEach(function (cmd) {
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commandObj = Command.create(cmd);
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console.error(formatOption(cmd, commandObj.synopsis()));
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console.error("\n");
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});
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console.error("Command names can be abbreviated as long as the abbreviation is unambiguous");
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console.error(this.toolName() + ' version:' + VERSION);
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console.error("\n");
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},
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run: function (args, callback) {
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var command;
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if (args.length === 0) {
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this.usage();
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} else {
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if (args[0] === 'config') {
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showConfigHelp(this.toolName());
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} else {
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try {
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command = Command.create(args[0]);
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command.usage('istanbul', Command.resolveCommandName(args[0]));
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} catch (ex) {
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console.error('Invalid command: ' + args[0]);
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this.usage();
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}
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}
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}
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return callback();
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}
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});
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module.exports = HelpCommand;
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