overleaf/services/web/app/src/Features/Project/ProjectHelper.js

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/* eslint-disable
handle-callback-err,
max-len,
*/
// 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 ProjectHelper
const ENGINE_TO_COMPILER_MAP = {
latex_dvipdf: 'latex',
pdflatex: 'pdflatex',
xelatex: 'xelatex',
lualatex: 'lualatex'
}
module.exports = ProjectHelper = {
compilerFromV1Engine(engine) {
return ENGINE_TO_COMPILER_MAP[engine]
},
ensureNameIsUnique(nameList, name, suffixes, maxLength, callback) {
// create a set of all project names
if (suffixes == null) {
suffixes = []
}
if (callback == null) {
callback = function(error, name, changed) {}
}
const allNames = new Set(nameList)
const isUnique = x => !allNames.has(x)
// check if the supplied name is already unique
if (isUnique(name)) {
return callback(null, name, false)
}
// the name already exists, try adding the user-supplied suffixes to generate a unique name
for (let suffix of Array.from(suffixes)) {
const candidateName = ProjectHelper._addSuffixToProjectName(
name,
suffix,
maxLength
)
if (isUnique(candidateName)) {
return callback(null, candidateName, true)
}
}
// if there are no (more) suffixes, use a numeric one
const uniqueName = ProjectHelper._addNumericSuffixToProjectName(
name,
allNames,
maxLength
)
if (uniqueName != null) {
return callback(null, uniqueName, true)
} else {
return callback(
new Error(`Failed to generate a unique name for: ${name}`)
)
}
},
_addSuffixToProjectName(name, suffix, maxLength) {
// append the suffix and truncate the project title if needed
if (suffix == null) {
suffix = ''
}
const truncatedLength = maxLength - suffix.length
return name.substr(0, truncatedLength) + suffix
},
_addNumericSuffixToProjectName(name, allProjectNames, maxLength) {
const NUMERIC_SUFFIX_MATCH = / \((\d+)\)$/
const suffixedName = function(basename, number) {
const suffix = ` (${number})`
return basename.substr(0, maxLength - suffix.length) + suffix
}
const match = name.match(NUMERIC_SUFFIX_MATCH)
let basename = name
let n = 1
const last = allProjectNames.size + n
if (match != null) {
basename = name.replace(NUMERIC_SUFFIX_MATCH, '')
n = parseInt(match[1])
}
while (n <= last) {
const candidate = suffixedName(basename, n)
if (!allProjectNames.has(candidate)) {
return candidate
}
n += 1
}
return null
}
}