church_streamer/api/encoder/runner.mjs

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JavaScript
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import { spawn } from 'child_process'
const argumentSplitter = new RegExp('("[^"]+")|([^ ]+)', 'g')
export function splitArguments(args) {
return Array.from(args.matchAll(argumentSplitter)).map(x => x[0])
}
function sendToStream(stream, source) {
return function(data) {
let cleaned = data.toString().replace(/\r\n/g, '\n').split('\n')
cleaned = cleaned.filter(x => Boolean(x.trim()))
for (let line of cleaned) {
stream(line, source)
}
}
}
export function runCommand(command, arg, stream = () => {}, returnProcess = false) {
let baseError = new Error('')
let options = splitArguments(arg)
if (!command) {
command = options[0]
options = options.slice(1)
}
return new Promise(function(res, rej) {
stream(`> ${command} ${options.join(' ')}\n`)
let processor = spawn(command, options, { shell: true })
processor.stdout.on('data', sendToStream(stream, 'stdout'))
processor.stderr.on('data', sendToStream(stream, 'stderr'))
processor.on('error', function(err) {
baseError.message = err.message
if (!returnProcess) rej(baseError)
})
processor.on('exit', function (code) {
if (code !== 0) {
baseError.message = 'Program returned error code: ' + code
if (!returnProcess) return rej(baseError)
}
if (!returnProcess) res(code)
})
if (returnProcess) {
res(processor)
}
})
}