function _ctExifMimeAndExt(name) {
        var ext = ((name || '').toLowerCase().split('.').pop());
        if (ext === 'jpg' || ext === 'jpeg') return { mime: 'image/jpeg', ext: '.jpg' };
        if (ext === 'png') return { mime: 'image/png', ext: '.png' };
        if (ext === 'webp') return { mime: 'image/webp', ext: '.webp' };
        if (ext === 'bmp') return { mime: 'image/bmp', ext: '.bmp' };
        return { mime: 'image/png', ext: '.png' };
    }

    function _ctExifExtFromMime(mime, fallbackExt) {
        if (mime === 'image/jpeg') return '.jpg';
        if (mime === 'image/png') return '.png';
        if (mime === 'image/webp') return '.webp';
        if (mime === 'image/bmp') return '.bmp';
        return fallbackExt || '.png';
    }

    function processFile(blob, fileName) {
        var info = _ctExifMimeAndExt(fileName);
        var reader = new FileReader();
        reader.onload = function(e) {
            var img = new Image();
            img.onload = function() {
                var canvas = document.createElement('canvas');
                canvas.width = img.naturalWidth || img.width;
                canvas.height = img.naturalHeight || img.height;
                canvas.getContext('2d').drawImage(img, 0, 0);

                var quality = info.mime === 'image/jpeg' || info.mime === 'image/webp' ? 0.95 : undefined;
                canvas.toBlob(function(outBlob) {
                    if (!outBlob) {
                        alert('Could not write this image format.');
                        return;
                    }
                    var base = (fileName || 'image').replace(/\.[^.]+$/, '');
                    var outExt = _ctExifExtFromMime(outBlob.type, info.ext);
                    add_file_output(URL.createObjectURL(outBlob), base + '-no-metadata' + outExt);
                }, info.mime, quality);
            };
            img.onerror = function() {
                alert('Could not decode this image file.');
            };
            img.src = e.target.result;
        };
        reader.readAsDataURL(blob);
    }







var _loadedScripts = {};
function loadScriptPromise(url) {
    if (_loadedScripts[url]) return _loadedScripts[url];
    _loadedScripts[url] = new Promise(function (resolve, reject) {
        var s = document.createElement('script');
        s.src = url;
        s.onload = resolve;
        s.onerror = reject;
        document.head.appendChild(s);
    });
    return _loadedScripts[url];
}

function replaceAll(find, replace, str) {
    return str.replace(new RegExp(find, 'g'), replace);
}

function beautify(str) {


    var result = '';

    var length = str.length;

    var i = 0;

    var braceCountLeft = 0;
    var braceCountRight = 0;

    var withinQuotes = false;

    while (i < length) {

        var c = str[i];

        if (c == '"' && (i == 0 || c[i - 1] != '\\')) {
            // non-escaped quotes
            withinQuotes = !withinQuotes;
        }

        if (!withinQuotes && (c == '}' || c == '{' || c == ',')) {

            console.log('Start####' + result);

            // look back and remove carriage returns and whitespace that are already there

            var resultIndex = result.length - 1;
            while (resultIndex >= 0 && (result[resultIndex] == ' ' || result[resultIndex] == '\r' || result[resultIndex] == '\n' || result[resultIndex] == '\t')) {

                resultIndex = resultIndex - 1;
                result = result.substr(0, resultIndex + 1);

                console.log('char ' + result[resultIndex] + '-----' + result + 'zzz ' + result.length + ' ' + resultIndex);

            }


            if (c == '{') {
                braceCountLeft++;
                result += c + '\r' + GetTabs(braceCountLeft - braceCountRight);
            } else if (c == '}') {
                braceCountRight++;
                // precede with carriage return
                result += '\r' + GetTabs(braceCountLeft - braceCountRight) + c;
            } else if (c == ',') {
                result += c + '\r' + GetTabs(braceCountLeft - braceCountRight);
            }

            var nextChar = '';

            // advance through whitespace and remove carriage returns that are already there
            while (i < length && (str[i + 1] == ' ' || str[i + 1] == '\r' || str[i + 1] == '\n' || str[i + 1] == '\t')) {
                i++;
            }

        } else {

            result += str[i];

        }


        i++;

    }

    return result;

}

function GetTabs(count) {

    var result = '';

    for (var i = 0; i < count; i++) {
        result += '    ';
    }

    return result;

}