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tabby/app/bufferizedPTY.js

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2018-03-28 22:25:57 +00:00
module.exports = function patchPTYModule (path) {
const mod = require(path)
const oldSpawn = mod.spawn
mod.spawn = (file, args, opt) => {
let terminal = oldSpawn(file, args, opt)
let timeout = null
let buffer = ''
let lastFlush = 0
let nextTimeout = 0
const maxWindow = 250
const minWindow = 50
function flush () {
if (buffer) {
terminal.emit('data-buffered', buffer)
}
lastFlush = Date.now()
buffer = ''
}
function reschedule () {
if (timeout) {
clearTimeout(timeout)
}
nextTimeout = Date.now() + minWindow
timeout = setTimeout(() => {
timeout = null
flush()
}, minWindow)
}
terminal.on('data', data => {
buffer += data
if (Date.now() - lastFlush > maxWindow) {
flush()
} else {
if (Date.now() > nextTimeout - (minWindow / 10)) {
reschedule()
}
}
})
return terminal
}
return mod
}