overleaf/services/clsi/app/coffee/ResourceWriter.coffee
2015-09-09 09:44:38 +01:00

66 lines
2.4 KiB
CoffeeScript

UrlCache = require "./UrlCache"
Path = require "path"
fs = require "fs"
async = require "async"
mkdirp = require "mkdirp"
OutputFileFinder = require "./OutputFileFinder"
Metrics = require "./Metrics"
logger = require "logger-sharelatex"
module.exports = ResourceWriter =
syncResourcesToDisk: (project_id, resources, basePath, callback = (error) ->) ->
@_removeExtraneousFiles resources, basePath, (error) =>
return callback(error) if error?
jobs = for resource in resources
do (resource) =>
(callback) => @_writeResourceToDisk(project_id, resource, basePath, callback)
async.series jobs, callback
_removeExtraneousFiles: (resources, basePath, _callback = (error) ->) ->
timer = new Metrics.Timer("unlink-output-files")
callback = (error) ->
timer.done()
_callback(error)
OutputFileFinder.findOutputFiles resources, basePath, (error, outputFiles) ->
return callback(error) if error?
jobs = []
for file in outputFiles or []
do (file) ->
path = file.path
should_delete = true
if path.match(/^output\./) or path.match(/\.aux$/)
should_delete = false
if path == "output.pdf" or path == "output.dvi" or path == "output.log"
should_delete = true
if should_delete
jobs.push (callback) -> ResourceWriter._deleteFileIfNotDirectory Path.join(basePath, path), callback
async.series jobs, callback
_deleteFileIfNotDirectory: (path, callback = (error) ->) ->
fs.stat path, (error, stat) ->
return callback(error) if error?
if stat.isFile()
fs.unlink path, callback
else
callback()
_writeResourceToDisk: (project_id, resource, basePath, callback = (error) ->) ->
path = Path.normalize(Path.join(basePath, resource.path))
if (path.slice(0, basePath.length) != basePath)
return callback new Error("resource path is outside root directory")
mkdirp Path.dirname(path), (error) ->
return callback(error) if error?
# TODO: Don't overwrite file if it hasn't been modified
if resource.url?
UrlCache.downloadUrlToFile project_id, resource.url, path, resource.modified, (err)->
if err?
logger.err err:err, project_id:project_id, path:path, resource_url:resource.url, modified:resource.modified, "error downloading file for resources"
callback() #try and continue compiling even if http resource can not be downloaded at this time
else
fs.writeFile path, resource.content, callback