mirror of
https://github.com/overleaf/overleaf.git
synced 2024-11-21 20:47:08 -05:00
88 lines
3.1 KiB
CoffeeScript
88 lines
3.1 KiB
CoffeeScript
UrlCache = require "./UrlCache"
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Path = require "path"
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fs = require "fs"
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async = require "async"
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mkdirp = require "mkdirp"
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OutputFileFinder = require "./OutputFileFinder"
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Metrics = require "./Metrics"
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logger = require "logger-sharelatex"
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module.exports = ResourceWriter =
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syncResourcesToDisk: (project_id, resources, basePath, callback = (error) ->) ->
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@_createDirectory basePath, (error) =>
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return callback(error) if error?
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@_removeExtraneousFiles resources, basePath, (error) =>
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return callback(error) if error?
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jobs = for resource in resources
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do (resource) =>
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(callback) => @_writeResourceToDisk(project_id, resource, basePath, callback)
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async.parallelLimit jobs, 5, callback
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_createDirectory: (basePath, callback = (error) ->) ->
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fs.mkdir basePath, (err) ->
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if err?
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if err.code is 'EEXIST'
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return callback()
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else
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logger.log {err: err, dir:basePath}, "error creating directory"
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return callback(err)
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else
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return callback()
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_removeExtraneousFiles: (resources, basePath, _callback = (error) ->) ->
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timer = new Metrics.Timer("unlink-output-files")
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callback = (error) ->
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timer.done()
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_callback(error)
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OutputFileFinder.findOutputFiles resources, basePath, (error, outputFiles) ->
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return callback(error) if error?
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jobs = []
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for file in outputFiles or []
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do (file) ->
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path = file.path
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should_delete = true
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if path.match(/^output\./) or path.match(/\.aux$/)
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should_delete = false
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if path == "output.pdf" or path == "output.dvi" or path == "output.log"
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should_delete = true
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if should_delete
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jobs.push (callback) -> ResourceWriter._deleteFileIfNotDirectory Path.join(basePath, path), callback
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async.series jobs, callback
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_deleteFileIfNotDirectory: (path, callback = (error) ->) ->
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fs.stat path, (error, stat) ->
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if error? and error.code is 'ENOENT'
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return callback()
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else if error?
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logger.err {err: error, path: path}, "error stating file in deleteFileIfNotDirectory"
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return callback(error)
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else if stat.isFile()
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fs.unlink path, (error) ->
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if error?
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logger.err {err: error, path: path}, "error removing file in deleteFileIfNotDirectory"
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callback(error)
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else
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callback()
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else
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callback()
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_writeResourceToDisk: (project_id, resource, basePath, callback = (error) ->) ->
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path = Path.normalize(Path.join(basePath, resource.path))
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if (path.slice(0, basePath.length) != basePath)
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return callback new Error("resource path is outside root directory")
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mkdirp Path.dirname(path), (error) ->
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return callback(error) if error?
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# TODO: Don't overwrite file if it hasn't been modified
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if resource.url?
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UrlCache.downloadUrlToFile project_id, resource.url, path, resource.modified, (err)->
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if err?
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logger.err err:err, project_id:project_id, path:path, resource_url:resource.url, modified:resource.modified, "error downloading file for resources"
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callback() #try and continue compiling even if http resource can not be downloaded at this time
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else
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fs.writeFile path, resource.content, callback
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