Tumblr Downloader

Down.coffee

fs = require 'fs'
http = require 'http'

xml2js = require 'xml2js'

user = process.argv[process.argv.length-1]

processdata = (rawData, action)->
    if rawData.posts? and rawData.posts.post?
        posts = rawData.posts 
        postMeta = posts['@']
        postList = posts.post

        if postList?
            action post for post in postList
        else
            console.log 'No posts.'
    else
        console.log 'Invalid rawData.'
        console.dir rawData

processStuff = (user, offset, action, endaction)->
    getOpts = {
        host: user+'.tumblr.com',
        port: 80,
        path: '/api/read?num=50start='+offset.toString()
    }

    http.get getOpts, (httpRes)->
            xmlParser = new xml2js.Parser
            resData = ''

            httpRes.on 'data', (chunk)->
                resData += chunk

            httpRes.on 'end', ()->
                xmlParser.parseString resData, (err, xmlRes)->
                    if xmlRes and xmlRes.posts?
                        totalPosts = xmlRes.posts['@'].total
                        processdata xmlRes, action
                        if offset+50 < totalPosts
                            processStuff user, offset+50, action, endaction
                        else
                            endaction()
                    else
                        if err
                            console.log 'Error'
                            console.dir err
                        else
                            console.log 'Invalid data.'
                            console.dir getOpts
                            console.dir xmlRes

            httpRes.on 'close', ()->
                console.log 'Connection closed. Fail.'

ws = fs.createWriteStream user+'.json', {flags: 'w', encoding: 'utf8', mode: 0660}

ws.on 'open', (fd)->
    mydata = []

    postaction = (post)->
        mydata.push post

    endaction = ()->
        ws.write JSON.stringify mydata
        ws.close
        console.log 'Done.'

    processStuff user, 0, postaction, endaction