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WIP: Add multiline support #26

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WIP: Add multiline support #26

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36 changes: 34 additions & 2 deletions source/prompt.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,21 @@ import {CompletionsMeta} from './complete'
import {PureEvaluator} from './eval'
import {debug, getColumnSizes, time} from './util'

import ioHook from 'iohook'

interface IOHookEvent {
type: string
keychar?: number
keycode?: number
rawcode?: number
shiftKey?: boolean
ctrlKey?: boolean
altKey?: boolean
metaKey?: boolean
}

let lastKeys: IOHookEvent[]= [{type: ``}]

export interface KeypressDetails {
sequence: string
name: string
Expand Down Expand Up @@ -382,8 +397,14 @@ export default function promptLine({
stdout.write('\n')
process.kill(process.pid, 'SIGTSTP')
} else if (name === 'return') {
stop()
return resolve([Commands.Line, {line: rl.line}])
const lastKey = lastKeys.concat().pop()
if (lastKey!.shiftKey) {
stdout.write('\n')
rl.write('\n')
} else {
stop()
return resolve([Commands.Line, {line: rl.line}])
}
} else if (hasPrePair(sequence) && sequence === relativeCharacter(0)) {
// Next character is a pair and is the same as the one entered, ghost it
// input `)`: `(|)` -> `()|`
Expand Down Expand Up @@ -464,6 +485,17 @@ export default function promptLine({
stdout.on('resize', resizeListener)
stdin.on('keypress', keypressListener)

ioHook.on('keypress', (event: IOHookEvent) => {
if (lastKeys.length < 2) lastKeys.push(event)
else {
lastKeys.pop()
lastKeys.unshift(event)
}
});


ioHook.start(false);

rerender()

function stop(): void {
Expand Down