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Tool to analyse IATA airport code tags on travel.stackexchange.com
<html>
<head>
<title>Travel StackExchange / jQuery / Stack Exchange API / YQL / CORS</title>
<script id="jqs" type="text/javascript" src="http://code.jquery.com/jquery-latest.min.js"></script>
<style type="text/css">
.container {
width:100%;
}
.left {
width:75%;
float:left;
}
.right {
width:25%;
float:right;
}
.iata {
color:blue
}
.tagwiki {
color:red
}
.warn {
background-color:yellow
}
.err {
background-color:red
}
tt {
font-weight:bold
}
</style>
<script type="text/javascript">
// TODO We don't know when everything is finished
// TODO Need to track and match all queries with successes/failures
// enable and/or play with this to test error handling code
$.ajaxSetup({
//timeout: 780
});
var outstanding_ajax = 0;
var good_excerpt_total = 0;
var no_excerpt_total = 0;
var bad_excerpt_total = 0;
var iata_total = 0;
var bad_iata_total = 0;
function do_stackexchange() {
var maxpagesize = 100;
var jqxhr2;
$("#fourm input").prop("disabled", true);
var pagecount;
var remainder;
// TODO include this in the loop instead of being an extra call before the loop
jqxhr2 = $.getJSON("http://api.travel.stackexchange.com/1.1/tags?jsonp=?",
{ pagesize: 0 },
function(data) {
remainder = data.total % maxpagesize;
pagecount = ( data.total - remainder ) / maxpagesize;
pagecount += (remainder != 0);
$("#tag-total").text(data.total);
get_all_sx_3letter_tags(maxpagesize, pagecount);
}
)
.error(function(jqXHR, textStatus, errorThrown) {
$("<div/>").attr("class", "err").text("sx info < ERROR st: " + textStatus).prependTo("#debug");
});
//$("#fourm input").prop("disabled", false);
}
// request a batch of airport codes - asynchronous
function do_airportcodes(page, codes) {
// YQL supports CORS (but MSIE and Opera do not)
var params = $.param(
{
// TODO ap: codes,
q: "select * from json where url in ("
+ "select url from uritemplate where template=\""
+ "http://airportcode.riobard.com/airport/{airport}?fmt=JSON"
+ "\" and airport in ("
+ $.map(codes, function(v){ return "\"" + v + "\""; }).join(",")
+ "))",
format: "json",
diagnostics: "true"
}/*,
true // jQuery.ajaxSettings.traditional*/
);
// TODO "http://query.yahooapis.com/v1/public/yql/peter/airports"
var $url = "http://query.yahooapis.com/v1/public/yql";
// if no CORS support then + "?callback=?"
if (!$.support.cors) {
$url += "?callback=?";
}
$("<div/>").text(++outstanding_ajax + " outstanding ajax (air)").prependTo("#debug");
$("#os-ajax").text(outstanding_ajax);
$.getJSON($url, params,
function(data){
var arr;
// YQL JSON seems to be converted from XML so varies depending on how many results were returned. Normalize to an array.
if (data.query.count > 1) {
arr = data.query.results.json;
} else {
arr = [];
if (data.query.count == 1) {
arr[0] = data.query.results.json;
}
}
var i = 0, j = 0, n = codes.length, m = data.query.count;
while (i < n) {
if (j < m && codes[i] === arr[j].code.toLowerCase()) {
var docompare = false;
var li = $("#" + codes[i]);
if (li.has("div.tagwiki").length) {
docompare = true;
}
$("<div/>").attr("class", "iata").text(arr[j].name).appendTo(li);
$("<div/>").attr("class", "iata").text(arr[j].location).appendTo(li);
$("#iata-total").text(++iata_total);
if (docompare) {
var name = arr[j].name;
var loc = arr[j].location;
var both = name + " " + loc;
var tw = li.children("div.tagwiki").text();
$("<div/>").text("name distance: " + levenshtein(tw, name) + " (wiki->iata)").appendTo(li);
$("<div/>").text(" loc distance: " + levenshtein(tw, loc) + " (wiki->iata)").appendTo(li);
$("<div/>").text("both distance: " + levenshtein(tw, both) + " (wiki->iata)").appendTo(li);
}
j++;
} else {
$("<div/>").attr("class", "iata warn").text("Invalid IATA airport code").appendTo("#" + codes[i]);
$("#bad-iata-total").text(++bad_iata_total);
}
i++;
}
}
)
.error(function(jqXHR, textStatus, errorThrown) {
$.each(codes, function(i, code){
$("<div/>").attr("class", "err").text("ac timeout").appendTo("#" + code);
});
$("<div/>").attr("class", "err").text("air < ERROR st: " + textStatus + " : " + codes).prependTo("#debug");
})
.complete(function(jqXHR, textStatus, errorThrown) {
$("<div/>").text(--outstanding_ajax + " outstanding ajax (air)").prependTo("#debug");
$("#os-ajax").text(outstanding_ajax);
});
}
// request a batch of tag wikis - asynchronous
function do_tagwikis(page, codes) {
// Stack Exchange doesn't support CORS, use JSONP
$("<div/>").text(++outstanding_ajax + " outstanding ajax (tw)").prependTo("#debug");
$("#os-ajax").text(outstanding_ajax);
$.getJSON("http://api.travel.stackexchange.com/1.1/tags/" + codes.join(";") + "/wikis?jsonp=?",
// success callback
function(data){
$.each(data.tag_wikis, function(i, ele){
var classes = "tagwiki";
if (ele.wiki_excerpt.toLowerCase().indexOf("air") == -1) {
classes += " warn";
$("#bad-excerpt-total").text(++bad_excerpt_total);
} else {
$("#excerpt-total").text(++good_excerpt_total);
}
var docompare = false;
var li = $("#" + ele.tag_name);
if (li.has("div.iata").length) {
docompare = true;
}
$("<div/>").attr("class", classes).text(ele.wiki_excerpt).appendTo(li);
if (docompare) {
var name = li.children("div.iata").eq(0).text();
var loc = li.children("div.iata").eq(1).text();
var both = name + " " + loc;
var tw = ele.wiki_excerpt;
$("<div/>").text("name distance: " + levenshtein(tw, name) + " (iata->wiki)").appendTo(li);
$("<div/>").text(" loc distance: " + levenshtein(tw, loc) + " (iata->wiki)").appendTo(li);
$("<div/>").text("both distance: " + levenshtein(tw, both) + " (iata->wiki)").appendTo(li);
}
});
// we got back fewer results than we passed in: some had no tag wiki
// TODO it's possible to get the right number of results because a tag wiki exists but has no excerpt!
// convert "data.tag_wikis" to a "map"
var map = {};
$.each(data.tag_wikis, function(i, tag){
map[tag.tag_name] = i; // could set to anything
});
// for each "codes" if it's not in map emit a warning that the code has no tag wiki
$.each(codes, function(i, code) {
if (!(code in map)) {
$("<div/>").attr("class", "tagwiki warn").text("There's no tag wiki excerpt for this code").appendTo("#" + codes[i]);
$("#no-excerpt-total").text(++no_excerpt_total);
}
});
}
)
.error(function(jqXHR, textStatus, errorThrown) {
$.each(codes, function(i, code){
$("<div/>").attr("class", "err").text("tw timeout").appendTo("#" + code);
});
$("<div/>").attr("class", "err").text("tw < ERROR st: " + textStatus).prependTo("#debug");
})
.complete(function(jqXHR, textStatus, errorThrown) {
$("<div/>").text(--outstanding_ajax + " outstanding ajax (tw)").prependTo("#debug");
$("#os-ajax").text(outstanding_ajax);
});
}
/////////////////////////////////////////////////////////////////////////////////////
// Helper function for get_all_sx_3letter_tags()
function tagPageFailed(page) {
return function(jqXHR, textStatus, errorThrown) {
$("<div/>").attr("class", "err").text("sx page > p" + page + " ERROR st: " + textStatus).prependTo("#debug");
};
}
function get_all_sx_3letter_tags(maxpagesize, pagecount) {
var three_tag_count = 0;
for (var p = 1; p <= pagecount; p++) {
$("<div/>").text(++outstanding_ajax + " outstanding ajax (sx)").prependTo("#debug");
$("#os-ajax").text(outstanding_ajax);
// Stack Exchange doesn't support CORS, use JSONP
$.getJSON("http://api.travel.stackexchange.com/1.1/tags?jsonp=?",
{
page: p,
pagesize: maxpagesize
},
function(data) {
if (data.error) {
$("<div/>").text("sx < ? success data error").prependTo("#debug");
} else {
var remainder = data.total % maxpagesize;
var pagecount = ( data.total - remainder ) / maxpagesize;
var codes = [];
$.each(data.tags, function(i, tag){
if (tag.name.match(/^[a-z][a-z][a-z]$/)) {
three_tag_count++;
$("#3l-tag-total").text(three_tag_count);
// maintain this list in order using binary search
var ol = $("#output");
var needle = tag.name;
var high = ol.children("li").length;
var low = 0;
var mid;
var id;
while (low < high) {
mid = parseInt((low + high) / 2)
id = $("ol#output li:nth-child(" + (mid+1) + ")").attr('id');
if (needle < id) {
high = mid;
} else {
low = mid + 1;
}
}
id = $("ol#output li:nth-child(" + (low+1) + ")").attr('id');
var li = $("<li id=\"" + tag.name + "\"><tt>" + tag.name.toUpperCase() + "</tt><sup>" + tag.count + "</sup></li>");
if (typeof id == "undefined") {
li.appendTo("#output");
} else {
li.insertBefore("#" + id);
}
codes.push(tag.name);
}
});
$("<div/>").text(codes.length + " 3-letter tags in page " + p).prependTo("#debug");
if (codes.length == 0) {
$("<div/>").text("no 3-letter tags in page " + p).prependTo("#debug");
} else {
do_airportcodes(data.page, codes);
do_tagwikis(data.page, codes);
}
}
}
)
.error(tagPageFailed(p))
.complete(function(jqXHR, textStatus) {
$("<div/>").text(--outstanding_ajax + " outstanding ajax (sx)").prependTo("#debug");
$("#os-ajax").text(outstanding_ajax);
});
}
$("<div/>").text("all ajax sent (sx)").prependTo("#debug");
}
$(document).ready(function(){
// initialize stuff
if ($.support.cors) {
$("<div/>").text("browser supports CORS").prependTo("#debug");
} else {
$("<div/>").attr("class", "err").text("browser does not support CORS").prependTo("#debug");
}
// add functions to the gui buttons
$("#stackexchange").click(function(){ do_stackexchange() });
// enable the form controls now that init is done
$("#fourm input").prop("disabled", false);
});
function levenshtein (s1, s2) {
// Calculate Levenshtein distance between two strings
//
// version: 1109.2015
// discuss at: http://phpjs.org/functions/levenshtein
// + original by: Carlos R. L. Rodrigues (http://www.jsfromhell.com)
// + bugfixed by: Onno Marsman
// + revised by: Andrea Giammarchi (http://webreflection.blogspot.com)
// + reimplemented by: Brett Zamir (http://brett-zamir.me)
// + reimplemented by: Alexander M Beedie
// * example 1: levenshtein('Kevin van Zonneveld', 'Kevin van Sommeveld');
// * returns 1: 3
if (s1 == s2) {
return 0;
}
var s1_len = s1.length;
var s2_len = s2.length;
if (s1_len === 0) {
return s2_len;
}
if (s2_len === 0) {
return s1_len;
}
// BEGIN STATIC
var split = false;
try {
split = !('0')[0];
} catch (e) {
split = true; // Earlier IE may not support access by string index
}
// END STATIC
if (split) {
s1 = s1.split('');
s2 = s2.split('');
}
var v0 = new Array(s1_len + 1);
var v1 = new Array(s1_len + 1);
var s1_idx = 0,
s2_idx = 0,
cost = 0;
for (s1_idx = 0; s1_idx < s1_len + 1; s1_idx++) {
v0[s1_idx] = s1_idx;
}
var char_s1 = '',
char_s2 = '';
for (s2_idx = 1; s2_idx <= s2_len; s2_idx++) {
v1[0] = s2_idx;
char_s2 = s2[s2_idx - 1];
for (s1_idx = 0; s1_idx < s1_len; s1_idx++) {
char_s1 = s1[s1_idx];
cost = (char_s1 == char_s2) ? 0 : 1;
var m_min = v0[s1_idx + 1] + 1;
var b = v1[s1_idx] + 1;
var c = v0[s1_idx] + cost;
if (b < m_min) {
m_min = b;
}
if (c < m_min) {
m_min = c;
}
v1[s1_idx + 1] = m_min;
}
var v_tmp = v0;
v0 = v1;
v1 = v_tmp;
}
return v0[s1_len];
}
</script>
</head>
<body>
Travel Stack Exchange airport code tag verification tool
<hr>
<form id="fourm">
<input type="button" disabled="true" id="stackexchange" value="Check Travel Stack Exchange 3-letter tags"></input>
Total number of tags: <span id="tag-total">?</span>.
<!-- number of tags scanned -->
Number of 3-letter tags: <span id="3l-tag-total">?</span>
Number with good wiki excerpt: <span id="excerpt-total">?</span>
Number with bad wiki excerpt: <span id="bad-excerpt-total">?</span>
Number with no wiki excerpt: <span id="no-excerpt-total">?</span>
Number of valid IATA airport codes: <span id="iata-total">?</span>
Number of invalid IATA airport codes: <span id="bad-iata-total">?</span>
(Outstanding AJAX requests: <span id="os-ajax">?</span>)
</form>
<hr>
<div class="container">
<div class="left">
Output<hr>
<ol id="output"/>
</div>
<div class="right">
Debugging<hr>
<div id="debug"></div>
</div>
</div>
</body>
</html>
@ankurdotb
  1. Correctly displays tag wikis, but in overall stats a the top does not show how many have tag wikis.
  2. In overall statistics, does not show how many are valid IATA codes. Three-letter tags which are not IATA codes are all tagged correctly.
@hippietrail
Owner

Yeah dealing with loops of asynchronous things is quite painful as it happens. I might implement deferred batches using jQuery or I might just leave it for a redesign now that I've learned a lot with this proof of concept.

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