function loadNgrams()

in site/js/ponymail.js [3545:3661]

• 101 lines of code
• 28 McCabe index (conditional complexity)

function loadNgrams() {
    
    // get list, timespan and query from the html page
    var args = document.location.search.substr(1)
    var a_arr = args.split(/:/, 3)
    var list = a_arr[0]
    var dspan = a_arr[1]
    var query = a_arr[2]
    // Try to detect header searches, if present
    var queries = unescape(query ? query : "").split("||")
    var ngrams = []
    var avg = false
    var topics = false
    var stack = false
    var plaw = false
    for (var n in queries) {
        var nquery = []
        var q = encodeURIComponent(queries[n])
        if (q == 'avg') {
            avg = true
            continue
        } else if (q == 'stack') {
            stack = true
            continue
        } else if (q == 'plaw') {
            plaw = true
            continue
        } else if (q == 'topics') {
            topics = true
            continue
        } else if (q.length == 0) {
            continue
        } else if (q == '*') {
            ngrams.push("q=")
            continue
        }
        else if (q && q.length > 0) {
            var stuff = ['from', 'subject', 'body', 'to']
            for (var k in stuff) {
                // can we find 'header=foo' stuff?
                var r = RegExp(stuff[k] + "=([^&=]+)&?", "mi")
                var m = q.match(r)
                if (m) {
                    q = q.replace(m[0], "")
                    // append to the header_foo query
                    nquery.push("header_" + stuff[k] + "=" + encodeURIComponent(m[1]))
                }
            }
        }
        if (q.length > 0) {
            nquery.push("q=" + q)
        }
        ngrams.push(nquery.join("&"))
    }
    
    // default to 1 month view if nothing else is supplied
    if (!dspan || dspan.length == 0) {
        dspan = DEFAULT_RETENTION
    }
    
    // figure out when this is and what the double is (for comparisons)
    var xa = datePickerDouble(dspan)
    
    // split list name for stats.lua
    var arr = list.split(/@/)
    var listname = arr[0]
    var domain = arr[1]
    
    // make the ngram generator div
    var nobj = document.getElementById('ngram_query')
    // options for ngram generator
    
    nobj.appendChild(generateFormDivs('listname', 'List(s):', 'text', list))
    var tspanner = generateFormDivs('timespan', 'Date range:', 'text', datePickerValue(dspan))
    tspanner.childNodes[1].childNodes[0].setAttribute("onmousedown", 'datePicker(this);')
    tspanner.childNodes[1].childNodes[0].setAttribute("data", dspan)
    nobj.appendChild(tspanner)
    nobj.appendChild(generateFormDivs('stack', 'Stack n-grams:', 'checkbox', stack))
    nobj.appendChild(generateFormDivs('avg', 'Use rolling averages:', 'checkbox', avg))
    nobj.appendChild(generateFormDivs('topics', 'Group messages by topics:', 'checkbox', topics))
    nobj.appendChild(generateFormDivs('plaw', 'Check for PL distribution:', 'checkbox', plaw))
    
    
    // query fields
    
    for (var n in queries) {
        var q = unescape(queries[n]);
        if (q != 'stack' && q != 'topics' && q!= 'avg' && q != 'plaw') {
            ngramboxes++;
            nobj.appendChild(generateFormDivs('query' + ngramboxes, 'Query #' + ngramboxes + ':', 'text', q != undefined ? q : ""))
        }
        
    }
    
    
    // submit button
    var btn = document.createElement('input')
    btn.setAttribute("id", "ngrambutton")
    btn.setAttribute("type", "button")
    btn.setAttribute("value", "Generate n-grams")
    btn.setAttribute("onclick", "makeNgramURL()")
    nobj.appendChild(btn)
    
    
    // add an empty field
    addNgramBox(2)
    
    // Get us some data
    if (ngrams.length > 0) {
        var nngram = ngrams.pop()
        GetAsync('/api/stats.lua?' + (topics ? "" : "quick=true&") + 'list='+listname+'&domain='+domain+'&d=' + dspan + "&" + nngram, { plaw: plaw, topics: topics, stack: stack, avg: avg, ngram: nngram, ngrams: ngrams, listname: listname, domain: domain, dbl: dspan, dfrom: xa[1], dto: xa[2], tspan: xa[3], dspan: dspan, query: query }, addNgram)
        document.title = "n-gram stats for " + list + " - Pony Mail!"
    } else {
        document.getElementById('trends').innerHTML = ""
    }
    
}