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formatJson.js
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formatJson.js
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/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
/*jslint white: true, devel: true, onevar: true, browser: true, undef: true, nomen: true, regexp: true, plusplus: false, bitwise: true, newcap: true, maxerr: 50, indent: 4 */
var jsl = typeof jsl === 'undefined' ? {} : jsl;
/**
* jsl.format - Provide json reformatting in a character-by-character approach, so that even invalid JSON may be reformatted (to the best of its ability).
*
**/
jsl.format = (function () {
function repeat(s, count) {
return new Array(count + 1).join(s);
}
function formatJson(json)
{
var i = 0,
il = 0,
tab = " ",
newJson = "",
indentLevel = 0,
inString = false,
currentChar = null;
for (i = 0, il = json.length; i < il; i += 1)
{
currentChar = json.charAt(i);
switch (currentChar) {
case '{':
case '[':
if (!inString) {
newJson += currentChar + "\n" + repeat(tab, indentLevel + 1);
indentLevel += 1;
} else {
newJson += currentChar;
}
break;
case '}':
case ']':
if (!inString) {
indentLevel -= 1;
newJson += "\n" + repeat(tab, indentLevel) + currentChar;
} else {
newJson += currentChar;
}
break;
case ',':
if (!inString) {
newJson += ",\n" + repeat(tab, indentLevel);
} else {
newJson += currentChar;
}
break;
case ':':
if (!inString) {
newJson += ": ";
} else {
newJson += currentChar;
}
break;
case ' ':
case "\n":
case "\t":
if (inString) {
newJson += currentChar;
}
break;
case '"':
if (i > 0 && json.charAt(i - 1) !== '\\') {
inString = !inString;
}
newJson += currentChar;
break;
default:
newJson += currentChar;
break;
}
}
return newJson;
}
return { "formatJson": formatJson };
}());
/*jslint white: true, devel: true, onevar: true, browser: true, undef: true, nomen: true, regexp: true, plusplus: false, bitwise: true, newcap: true, maxerr: 50, indent: 4 */
var jsl = typeof jsl === 'undefined' ? {} : jsl;
/**
* Helper Function for Caret positioning
* Gratefully borrowed from the Masked Input Plugin by Josh Bush
* http://digitalbush.com/projects/masked-input-plugin
**/
$.fn.caret = function (begin, end) {
if (this.length === 0) {
return;
}
if (typeof begin === 'number') {
end = (typeof end === 'number') ? end : begin;
return this.each(function () {
if (this.setSelectionRange) {
this.focus();
this.setSelectionRange(begin, end);
} else if (this.createTextRange) {
var range = this.createTextRange();
range.collapse(true);
range.moveEnd('character', end);
range.moveStart('character', begin);
range.select();
}
});
} else {
if (this[0].setSelectionRange) {
begin = this[0].selectionStart;
end = this[0].selectionEnd;
} else if (document.selection && document.selection.createRange) {
var range = document.selection.createRange();
begin = -range.duplicate().moveStart('character', -100000);
end = begin + range.text.length;
}
return {"begin": begin, "end": end};
}
};
/**
* jsl.interactions - provides support for interactions within JSON Lint.
*
**/
jsl.interactions = (function ()
{
var reformatParam,
reformat,
compress;
/******* UTILITY METHODS *******/
/**
* Get the Nth position of a character in a string
* @searchStr the string to search through
* @char the character to find
* @pos int the nth character to find, 1 based.
*
* @return int the position of the character found
**/
function getNthPos(searchStr, _char, pos) {
var i,
charCount = 0,
strArr = searchStr.split(_char);
if (pos === 0) {
return 0;
}
for (i = 0; i < pos; i++) {
if (i >= strArr.length) {
return -1;
}
// +1 because we split out some characters
charCount += strArr[i].length + _char.length;
}
return charCount;
}
/**
* Get a URL parameter from the current windows URL.
* Courtesy Paul Oppenheim: http://stackoverflow.com/questions/1403888/get-url-parameter-with-jquery
* @param name the parameter to retrieve
* @return string the url parameter's value, if any
**/
function getURLParameter(name) {
param = (new RegExp(name + '=' + '(.+?)(&|$)').exec(location.search) || ['', null])[1];
if (param) {
return decodeURI(param);
} else {
return null;
}
}
/******* INTERACTION METHODS *******/
/**
* Validate the JSON we've been given, displaying an error or success message.
* @return void
**/
function validate()
{
var lineNum,
lineMatches,
lineStart,
lineEnd,
jsonVal,
result;
jsonVal = $('#json_input').val();
try
{
result = jsl.parser.parse(jsonVal);
if (result)
{
$('#results').removeClass('error').addClass('success');
$('div.linedwrap').removeClass('redBorder').addClass('greenBorder');
$('#results').text('Valid JSON');
if (reformat)
{
$('#json_input').val(JSON.stringify(JSON.parse(jsonVal), null, " "));
}
if (compress)
{
$('#json_input').val(JSON.stringify(JSON.parse(jsonVal), null, ""));
}
}
else
{
alert("An unknown error occurred. Please contact Arc90.");
}
}
catch (parseException)
{
/**
* If we failed to validate, run our manual formatter and then re-validate so that we
* can get a better line number. On a successful validate, we don't want to run our
* manual formatter because the automatic one is faster and probably more reliable.
**/
try
{
if (reformat)
{
jsonVal = jsl.format.formatJson($('#json_input').val());
$('#json_input').val(jsonVal);
result = jsl.parser.parse($('#json_input').val());
}
}
catch(e)
{
parseException = e;
}
lineMatches = parseException.message.match(/line ([0-9]*)/);
if (lineMatches && typeof lineMatches === "object" && lineMatches.length > 1)
{
lineNum = parseInt(lineMatches[1], 10);
if (lineNum === 1)
{
lineStart = 0;
}
else
{
lineStart = getNthPos(jsonVal, "\n", lineNum - 1);
}
lineEnd = jsonVal.indexOf("\n", lineStart);
if (lineEnd < 0)
{
lineEnd = jsonVal.length;
}
$('#json_input').focus().caret(lineStart, lineEnd);
}
$('#results').text(parseException.message);
$('#results').removeClass('success').addClass('error');
$('div.linedwrap').removeClass('greenBorder').addClass('redBorder');
}
$('#loadSpinner').hide();
}
/**
* Initialize variables, add event listeners, etc.
*
* @return void
**/
function init()
{
reformatParam = getURLParameter('reformat');
reformat = reformatParam !== '0' && reformatParam !== 'no';
compress = reformatParam === 'compress',
jsonParam = getURLParameter('json');
if (compress) {
$('#headerText').html('JSONLint<span class="light">Compressor</span>');
}
if (!reformat) {
$('#headerText').html('JSONLint<span class="light">Lite</span>');
}
$('#validate').click(function ()
{
$('#results_header, #loadSpinner').show();
var jsonVal = $.trim($('#json_input').val());
if (jsonVal.substring(0, 4).toLowerCase() === "http")
{
$.post("proxy.php", {"url": jsonVal}, function (responseObj)
{
$('#json_input').val(responseObj.content);
validate();
}, 'json');
}
else
{
validate();
}
return false;
});
$('#json_input').keyup(function ()
{
$('div.linedwrap').removeClass('greenBorder').removeClass('redBorder');
}).linedtextarea({
selectedClass: 'lineselect'
});
$('#reset').click(function () {
$('#json_input').val('').focus();
});
$('#faqButton').click(function () {
$('#faq').slideToggle();
});
if (jsonParam) {
$('#json_input').val(jsonParam);
$('#validate').click();
}
}
return {
'init': init
};
}());
$(function ()
{
jsl.interactions.init();
});