2dda2e10
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var chalk = require('chalk');
var Q = require('q');
var promptly = require('promptly');
var createError = require('../util/createError');
function JsonRenderer() {
this._nrLogs = 0;
}
JsonRenderer.prototype.end = function (data) {
if (this._nrLogs) {
process.stderr.write(']\n');
}
if (data) {
process.stdout.write(this._stringify(data) + '\n');
}
};
JsonRenderer.prototype.error = function (err) {
var message = err.message;
var stack;
err.id = err.code || 'error';
err.level = 'error';
err.data = err.data || {};
// Need to set message again because it is
// not enumerable in some cases
delete err.message;
err.message = message;
// Stack
stack = err.fstream_stack || err.stack || 'N/A';
err.stacktrace = (Array.isArray(stack) ? stack.join('\n') : stack);
this.log(err);
this.end();
};
JsonRenderer.prototype.log = function (log) {
if (!this._nrLogs) {
process.stderr.write('[');
} else {
process.stderr.write(', ');
}
process.stderr.write(this._stringify(log));
this._nrLogs++;
};
JsonRenderer.prototype.prompt = function (prompts) {
var promise = Q.resolve();
var answers = {};
var that = this;
prompts.forEach(function (prompt) {
var opts;
var funcName;
// Strip colors
prompt.message = chalk.stripColor(prompt.message);
// Prompt
opts = {
silent: true, // To not mess with JSON output
trim: false, // To allow " " to not assume the default value
default: prompt.default == null ? '' : prompt.default, // If default is null, make it '' so that it does not retry
validator: !prompt.validate ? null : function (value) {
var ret = prompt.validate(value);
if (typeof ret === 'string') {
throw ret;
}
return value;
},
};
// For now only "input", "confirm" and "password" are supported
switch (prompt.type) {
case 'input':
funcName = 'prompt';
break;
case 'confirm':
case 'password':
funcName = prompt.type;
break;
case 'checkbox':
funcName = 'prompt';
break;
default:
promise = promise.then(function () {
throw createError('Unknown prompt type', 'ENOTSUP');
});
return;
}
promise = promise.then(function () {
// Log
prompt.level = 'prompt';
that.log(prompt);
return Q.nfcall(promptly[funcName], '', opts)
.then(function (answer) {
answers[prompt.name] = answer;
});
});
if (prompt.type === 'checkbox') {
promise = promise.then(function () {
answers[prompt.name] = answers[prompt.name].split(',');
});
}
});
return promise.then(function () {
return answers;
});
};
// -------------------------
JsonRenderer.prototype._stringify = function (log) {
// To json
var str = JSON.stringify(log, null, ' ');
// Remove colors in case some log has colors..
str = chalk.stripColor(str);
return str;
};
module.exports = JsonRenderer;
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