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main.js
executable file
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main.js
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'use strict';
const inquirer = require('inquirer');
const execa = require('execa');
const Q = require('q');
const spawn = require('child_process').spawn;
const stringArgv = require('string-argv');
const EventEmitter = require('events');
const debug = require('debug')('spacey')
const fs = require('fs')
const path = require('path');
var servers = [];
(function readConfig() {
const CONFIG_PATH = `${process.env.HOME}/.spacey`;
let data = fs.readFileSync(CONFIG_PATH, 'utf8');
servers = data.split('\n').filter(x => x);
debug(`Loaded servers from ~/.spacey:\n${servers}`)
})()
function connectSSH(host, cmd, interactive=false) {
let argv = stringArgv(`ssh ${host} -o ControlMaster=auto -o ControlPath=~/.ssh/.sockets/%r@%h-%p -o ControlPersist=600 -tt "${cmd}"`);
let dfd = Q.defer();
execa(argv[0], argv.slice(1), {
shell: true,
stdio: interactive ? 'inherit' : null
}).then(promise => {
dfd.resolve({
output: promise.stdout,
server: host
})
}).catch(ex => console.error(ex))
return dfd.promise;
}
if(process.argv[2] == 'new') {
newScreen()
} else {
chooseScreen()
}
// Full format
// const SCREEN_REGEX = /(\d+)\.(\S+)\s\((\S+\s\S+\s\S+)\)\s\((\S+)\)/;
// Loose format
const SCREEN_REGEX = /(\d+)\.(\S+)\s\((\S+(\s){0,1}\S+(\s){0,1}\S+)\)/;
function parseScreens(serverScreen) {
let screens = [];
try {
let server = serverScreen.server;
let output = serverScreen.output.split('\n');
let startReadingScreens = false;
for (var i = 0; i < output.length; i++) {
let line = output[i];
if(line.startsWith("There are several suitable screens on:")) {
startReadingScreens = true;
continue;
}
if(startReadingScreens) {
let [ _, pid, name, _2, _3 ] = SCREEN_REGEX.exec(line)
screens.push({
server,
pid,
name,
fullname: `${pid}.${name}`,
// date,
// attached
})
}
}
} catch(ex) {
}
return screens;
}
function newScreen() {
inquirer.registerPrompt('autocomplete', require('inquirer-autocomplete-prompt'));
inquirer.prompt({
type: 'autocomplete',
name: 'server',
message: 'Which server shall we connect to?',
type: 'list',
choices: servers.map(server => { return {
name: `${server}`
}})
})
.then(answer => {
let screen = process.argv[3];
connectSSH(answer.server, `screen -S ${screen}`, true)
})
}
function getServerScreens() {
const sed = "sed 's/^[ \t]*//;s/[ \t]*$//'";
return servers.map(server => {
return connectSSH(server, `screen -r | ${sed}`, false)
})
}
function chooseScreen() {
Q.allSettled(getServerScreens())
.then(serverScreens => {
let screens = [];
screens = serverScreens.map(promise => parseScreens(promise.value)).reduce((pre, cur) => pre.concat(cur));
debug(`Found screens:\n ${JSON.stringify(screens, null, 1)}`);
inquirer.registerPrompt('autocomplete', require('inquirer-autocomplete-prompt'));
return inquirer.prompt({
type: 'autocomplete',
name: 'screen',
message: 'Open a screen:',
type: 'list',
choices: screens.map(screen => { return {
name: `${screen.name}`,
value: screen
}})
})
}).then(answer => {
try {
connectSSH(answer.screen.server, `screen -r ${answer.screen.fullname}`, true)
} catch(ex) { console.log(ex)}
});
}