mirror of
https://github.com/overleaf/overleaf.git
synced 2024-12-27 21:41:27 +00:00
57 lines
1.5 KiB
JavaScript
57 lines
1.5 KiB
JavaScript
/* eslint-disable
|
|
camelcase,
|
|
handle-callback-err,
|
|
new-cap,
|
|
no-throw-literal,
|
|
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 DiffCodec
|
|
const { diff_match_patch } = require('../lib/diff_match_patch')
|
|
const dmp = new diff_match_patch()
|
|
|
|
module.exports = DiffCodec = {
|
|
ADDED: 1,
|
|
REMOVED: -1,
|
|
UNCHANGED: 0,
|
|
|
|
diffAsShareJsOp(before, after, callback) {
|
|
if (callback == null) {
|
|
callback = function (error, ops) {}
|
|
}
|
|
const diffs = dmp.diff_main(before.join('\n'), after.join('\n'))
|
|
dmp.diff_cleanupSemantic(diffs)
|
|
|
|
const ops = []
|
|
let position = 0
|
|
for (const diff of Array.from(diffs)) {
|
|
const type = diff[0]
|
|
const content = diff[1]
|
|
if (type === this.ADDED) {
|
|
ops.push({
|
|
i: content,
|
|
p: position
|
|
})
|
|
position += content.length
|
|
} else if (type === this.REMOVED) {
|
|
ops.push({
|
|
d: content,
|
|
p: position
|
|
})
|
|
} else if (type === this.UNCHANGED) {
|
|
position += content.length
|
|
} else {
|
|
throw 'Unknown type'
|
|
}
|
|
}
|
|
return callback(null, ops)
|
|
}
|
|
}
|