MikeCoder / MJsonViewer

// Permission is hereby granted, free of charge, to any person obtaining

// a copy of this software and associated documentation files (the "Software"),

// to deal in the Software without restriction, including without limitation

// the rights to use, copy, modify, merge, publish, distribute, sublicense,

// and/or sell copies of the Software, and to permit persons to whom the

// Software is furnished to do so, subject to the following conditions:

// The above copyright notice and this permission notice shall be included

// in all copies or substantial portions of the Software.

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES

// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.

// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,

// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,

// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE

// OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

// ===========================================

// JSON PARSER

// ===========================================

    var jsonRe = /^\s*(?:\[\s*(?=-?\d|true|false|null|["[{])[^]*\]|\{\s*"[^]+\})\s*$/;

    var body = document.body;

    var str, jsonpMatch, tag;

        // only render when the contentType is json

        if (/[+\/]json$/i.test(document.contentType)) {

            init();

            str = body.textContent;

            draw(str, body);

        }

    } else {

        // check whether the content is json or like json

        if (first &&

            (first.tagName == "PRE" &&

                first == body.lastElementChild ||

                first == body.lastChild &&

                first.nodeType == 3) &&

            (str = first.textContent) &&

            (/[+\/]json$/i.test(document.contentType) ||

                (jsonpMatch = /^\s*((?:\/\*\*\/\s*)?([$a-z_][$\w]*)\s*(?:&&\s*\2\s*)?\()([^]+)(\)[\s;]*)$/i.exec(str)) &&

                jsonRe.test(jsonpMatch[3]) || jsonRe.test(str))) {

            if (jsonpMatch) {

                str = jsonpMatch[3];

                body.replaceChild(fragment(jsonpMatch[1], jsonpMatch[4]), first);

                first = body.lastChild.previousSibling;

            }

            init();

            draw(str, body);

        }

    }