balena-cli/build/actions/help.js
2015-02-26 11:47:56 -04:00

162 lines
4.8 KiB
JavaScript

(function() {
var PADDING_INITIAL, PADDING_MIDDLE, _, addAlias, addOptionPrefix, buildHelpString, buildOptionSignatureHelp, capitano, getCommandHelp, getFieldMaxLength, getOptionHelp, getOptionsParsedSignatures, resin;
_ = require('lodash');
_.str = require('underscore.string');
resin = require('resin-sdk');
capitano = require('capitano');
PADDING_INITIAL = ' ';
PADDING_MIDDLE = '\t';
getFieldMaxLength = function(array, field) {
return _.max(_.map(array, function(item) {
return item[field].toString().length;
}));
};
buildHelpString = function(firstColumn, secondColumn) {
var result;
result = "" + PADDING_INITIAL + firstColumn;
result += "" + PADDING_MIDDLE + secondColumn;
return result;
};
addOptionPrefix = function(option) {
if (option.length <= 0) {
return;
}
if (option.length === 1) {
return "-" + option;
} else {
return "--" + option;
}
};
addAlias = function(alias) {
return ", " + (addOptionPrefix(alias));
};
buildOptionSignatureHelp = function(option) {
var alias, i, len, ref, result;
result = addOptionPrefix(option.signature.toString());
if (_.isString(option.alias)) {
result += addAlias(option.alias);
} else if (_.isArray(option.alias)) {
ref = option.alias;
for (i = 0, len = ref.length; i < len; i++) {
alias = ref[i];
result += addAlias(alias);
}
}
if (option.parameter != null) {
result += " <" + option.parameter + ">";
}
return result;
};
getCommandHelp = function(command) {
var commandSignature, maxSignatureLength;
maxSignatureLength = getFieldMaxLength(capitano.state.commands, 'signature');
commandSignature = _.str.rpad(command.signature.toString(), maxSignatureLength, ' ');
return buildHelpString(commandSignature, command.description);
};
getOptionsParsedSignatures = function(optionsHelp) {
var maxLength;
maxLength = _.max(_.map(optionsHelp, function(signature) {
return signature.length;
}));
return _.map(optionsHelp, function(signature) {
return _.str.rpad(signature, maxLength, ' ');
});
};
getOptionHelp = function(option, maxLength) {
var result;
result = PADDING_INITIAL;
result += _.str.rpad(option.signature, maxLength, ' ');
result += PADDING_MIDDLE;
result += option.description;
return result;
};
exports.general = function() {
var command, i, j, len, len1, option, optionSignatureMaxLength, options, ref;
console.log('Usage: resin [COMMAND] [OPTIONS]\n');
console.log('Commands:\n');
ref = capitano.state.commands;
for (i = 0, len = ref.length; i < len; i++) {
command = ref[i];
if (command.isWildcard()) {
continue;
}
console.log(getCommandHelp(command));
}
console.log('\nGlobal Options:\n');
options = _.map(capitano.state.globalOptions, function(option) {
option.signature = buildOptionSignatureHelp(option);
return option;
});
optionSignatureMaxLength = _.max(_.map(options, function(option) {
return option.signature.length;
}));
for (j = 0, len1 = options.length; j < len1; j++) {
option = options[j];
console.log(getOptionHelp(option, optionSignatureMaxLength));
}
return console.log();
};
exports.command = function(params, options, done) {
return capitano.state.getMatchCommand(params.command, function(error, command) {
var i, len, option, optionSignatureMaxLength;
if (error != null) {
return done(error);
}
if ((command == null) || command.isWildcard()) {
return capitano.defaults.actions.commandNotFound(params.command);
}
console.log("Usage: " + command.signature);
if (command.help != null) {
console.log("\n" + command.help);
} else if (command.description != null) {
console.log("\n" + (_.str.humanize(command.description)));
}
if (!_.isEmpty(command.options)) {
console.log('\nOptions:\n');
options = _.map(command.options, function(option) {
option.signature = buildOptionSignatureHelp(option);
return option;
});
optionSignatureMaxLength = _.max(_.map(options, function(option) {
return option.signature.toString().length;
}));
for (i = 0, len = options.length; i < len; i++) {
option = options[i];
console.log(getOptionHelp(option, optionSignatureMaxLength));
}
console.log();
}
return done();
});
};
exports.help = {
signature: 'help [command...]',
description: 'show help',
action: function(params, options, done) {
if (params.command != null) {
return exports.command(params, options, done);
} else {
return exports.general(params, options, done);
}
}
};
}).call(this);