mirror of
https://github.com/overleaf/overleaf.git
synced 2024-11-14 20:40:17 -05:00
113 lines
3.5 KiB
JavaScript
113 lines
3.5 KiB
JavaScript
/* eslint-disable
|
|
no-unmodified-loop-condition,
|
|
no-unused-vars,
|
|
*/
|
|
// TODO: This file was created by bulk-decaffeinate.
|
|
// Fix any style issues and re-enable lint.
|
|
/*
|
|
* decaffeinate suggestions:
|
|
* DS101: Remove unnecessary use of Array.from
|
|
* DS102: Remove unnecessary code created because of implicit returns
|
|
* DS207: Consider shorter variations of null checks
|
|
* Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
|
|
*/
|
|
let ProjectIterator
|
|
const Heap = require('heap')
|
|
|
|
module.exports =
|
|
ProjectIterator =
|
|
ProjectIterator =
|
|
class ProjectIterator {
|
|
constructor(packs, before, getPackByIdFn) {
|
|
this.before = before
|
|
this.getPackByIdFn = getPackByIdFn
|
|
const byEndTs = (a, b) =>
|
|
b.meta.end_ts - a.meta.end_ts || a.fromIndex - b.fromIndex
|
|
this.packs = packs.slice().sort(byEndTs)
|
|
this.queue = new Heap(byEndTs)
|
|
}
|
|
|
|
next(callback) {
|
|
// what's up next
|
|
// console.log ">>> top item", iterator.packs[0]
|
|
const iterator = this
|
|
const { before } = this
|
|
const { queue } = iterator
|
|
const opsToReturn = []
|
|
let nextPack = iterator.packs[0]
|
|
let lowWaterMark =
|
|
(nextPack != null ? nextPack.meta.end_ts : undefined) || 0
|
|
let nextItem = queue.peek()
|
|
|
|
// console.log "queue empty?", queue.empty()
|
|
// console.log "nextItem", nextItem
|
|
// console.log "nextItem.meta.end_ts", nextItem?.meta.end_ts
|
|
// console.log "lowWaterMark", lowWaterMark
|
|
|
|
while (
|
|
before != null &&
|
|
(nextPack != null ? nextPack.meta.start_ts : undefined) > before
|
|
) {
|
|
// discard pack that is outside range
|
|
iterator.packs.shift()
|
|
nextPack = iterator.packs[0]
|
|
lowWaterMark =
|
|
(nextPack != null ? nextPack.meta.end_ts : undefined) || 0
|
|
}
|
|
|
|
if (
|
|
(queue.empty() ||
|
|
(nextItem != null ? nextItem.meta.end_ts : undefined) <=
|
|
lowWaterMark) &&
|
|
nextPack != null
|
|
) {
|
|
// retrieve the next pack and populate the queue
|
|
return this.getPackByIdFn(
|
|
nextPack.project_id,
|
|
nextPack.doc_id,
|
|
nextPack._id,
|
|
function (err, pack) {
|
|
if (err != null) {
|
|
return callback(err)
|
|
}
|
|
iterator.packs.shift() // have now retrieved this pack, remove it
|
|
// console.log "got pack", pack
|
|
for (const op of Array.from(pack.pack)) {
|
|
// console.log "adding op", op
|
|
if (before == null || op.meta.end_ts < before) {
|
|
op.doc_id = nextPack.doc_id
|
|
op.project_id = nextPack.project_id
|
|
queue.push(op)
|
|
}
|
|
}
|
|
// now try again
|
|
return iterator.next(callback)
|
|
}
|
|
)
|
|
}
|
|
|
|
// console.log "nextItem", nextItem, "lowWaterMark", lowWaterMark
|
|
while (
|
|
nextItem != null &&
|
|
(nextItem != null ? nextItem.meta.end_ts : undefined) > lowWaterMark
|
|
) {
|
|
opsToReturn.push(nextItem)
|
|
queue.pop()
|
|
nextItem = queue.peek()
|
|
}
|
|
|
|
// console.log "queue empty?", queue.empty()
|
|
// console.log "nextPack", nextPack?
|
|
|
|
if (queue.empty() && nextPack == null) {
|
|
// got everything
|
|
iterator._done = true
|
|
}
|
|
|
|
return callback(null, opsToReturn)
|
|
}
|
|
|
|
done() {
|
|
return this._done
|
|
}
|
|
}
|