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joplin/CliClient/app/cli-utils.js
2017-11-16 18:51:11 +00:00

249 lines
5.6 KiB
JavaScript

const yargParser = require('yargs-parser');
const { _ } = require('lib/locale.js');
const { time } = require('lib/time-utils.js');
const stringPadding = require('string-padding');
const cliUtils = {};
cliUtils.printArray = function(logFunction, rows, headers = null) {
if (!rows.length) return '';
const ALIGN_LEFT = 0;
const ALIGN_RIGHT = 1;
let colWidths = [];
let colAligns = [];
for (let i = 0; i < rows.length; i++) {
let row = rows[i];
for (let j = 0; j < row.length; j++) {
let item = row[j];
let width = item ? item.toString().length : 0;
let align = typeof item == 'number' ? ALIGN_RIGHT : ALIGN_LEFT;
if (!colWidths[j] || colWidths[j] < width) colWidths[j] = width;
if (colAligns.length <= j) colAligns[j] = align;
}
}
let lines = [];
for (let row = 0; row < rows.length; row++) {
let line = [];
for (let col = 0; col < colWidths.length; col++) {
let item = rows[row][col];
let width = colWidths[col];
let dir = colAligns[col] == ALIGN_LEFT ? stringPadding.RIGHT : stringPadding.LEFT;
line.push(stringPadding(item, width, ' ', dir));
}
logFunction(line.join(' '));
}
}
cliUtils.parseFlags = function(flags) {
let output = {};
flags = flags.split(',');
for (let i = 0; i < flags.length; i++) {
let f = flags[i].trim();
if (f.substr(0, 2) == '--') {
f = f.split(' ');
output.long = f[0].substr(2).trim();
if (f.length == 2) {
output.arg = cliUtils.parseCommandArg(f[1].trim());
}
} else if (f.substr(0, 1) == '-') {
output.short = f.substr(1);
}
}
return output;
}
cliUtils.parseCommandArg = function(arg) {
if (arg.length <= 2) throw new Error('Invalid command arg: ' + arg);
const c1 = arg[0];
const c2 = arg[arg.length - 1];
const name = arg.substr(1, arg.length - 2);
if (c1 == '<' && c2 == '>') {
return { required: true, name: name };
} else if (c1 == '[' && c2 == ']') {
return { required: false, name: name };
} else {
throw new Error('Invalid command arg: ' + arg);
}
}
cliUtils.makeCommandArgs = function(cmd, argv) {
let cmdUsage = cmd.usage();
cmdUsage = yargParser(cmdUsage);
let output = {};
let options = cmd.options();
let booleanFlags = [];
let aliases = {};
for (let i = 0; i < options.length; i++) {
if (options[i].length != 2) throw new Error('Invalid options: ' + options[i]);
let flags = options[i][0];
let text = options[i][1];
flags = cliUtils.parseFlags(flags);
if (!flags.arg) {
booleanFlags.push(flags.short);
if (flags.long) booleanFlags.push(flags.long);
}
if (flags.short && flags.long) {
aliases[flags.long] = [flags.short];
}
}
let args = yargParser(argv, {
boolean: booleanFlags,
alias: aliases,
string: ['_'],
});
for (let i = 1; i < cmdUsage['_'].length; i++) {
const a = cliUtils.parseCommandArg(cmdUsage['_'][i]);
if (a.required && !args['_'][i]) throw new Error(_('Missing required argument: %s', a.name));
if (i >= a.length) {
output[a.name] = null;
} else {
output[a.name] = args['_'][i];
}
}
let argOptions = {};
for (let key in args) {
if (!args.hasOwnProperty(key)) continue;
if (key == '_') continue;
argOptions[key] = args[key];
}
output.options = argOptions;
return output;
}
cliUtils.promptMcq = function(message, answers) {
const readline = require('readline');
const rl = readline.createInterface({
input: process.stdin,
output: process.stdout
});
message += "\n\n";
for (let n in answers) {
if (!answers.hasOwnProperty(n)) continue;
message += _('%s: %s', n, answers[n]) + "\n";
}
message += "\n";
message += _('Your choice: ');
return new Promise((resolve, reject) => {
rl.question(message, (answer) => {
rl.close();
if (!(answer in answers)) {
reject(new Error(_('Invalid answer: %s', answer)));
return;
}
resolve(answer);
});
});
}
cliUtils.promptConfirm = function(message, answers = null) {
if (!answers) answers = [_('Y'), _('n')];
const readline = require('readline');
const rl = readline.createInterface({
input: process.stdin,
output: process.stdout
});
message += ' (' + answers.join('/') + ')';
return new Promise((resolve, reject) => {
rl.question(message + ' ', (answer) => {
const ok = !answer || answer.toLowerCase() == answers[0].toLowerCase();
rl.close();
resolve(ok);
});
});
}
cliUtils.promptInput = function(message) {
const readline = require('readline');
const rl = readline.createInterface({
input: process.stdin,
output: process.stdout
});
return new Promise((resolve, reject) => {
rl.question(message + ' ', (answer) => {
rl.close();
resolve(answer);
});
});
}
// Note: initialText is there to have the same signature as statusBar.prompt() so that
// it can be a drop-in replacement, however initialText is not used (and cannot be
// with readline.question?).
cliUtils.prompt = function(initialText = '', promptString = ':') {
const readline = require('readline');
const rl = readline.createInterface({
input: process.stdin,
output: process.stdout
});
return new Promise((resolve, reject) => {
rl.question(promptString, (answer) => {
rl.close();
resolve(answer);
});
});
}
let redrawStarted_ = false;
let redrawLastLog_ = null;
let redrawLastUpdateTime_ = 0;
cliUtils.setStdout = function(v) {
this.stdout_ = v;
}
cliUtils.redraw = function(s) {
const now = time.unixMs();
if (now - redrawLastUpdateTime_ > 4000) {
this.stdout_(s);
redrawLastUpdateTime_ = now;
redrawLastLog_ = null;
} else {
redrawLastLog_ = s;
}
redrawStarted_ = true;
}
cliUtils.redrawDone = function() {
if (!redrawStarted_) return;
if (redrawLastLog_) {
this.stdout_(redrawLastLog_);
}
redrawLastLog_ = null;
redrawStarted_ = false;
}
module.exports = { cliUtils };