source: node_modules/strip-json-comments/index.js@ 81bc7da

'use strict';
var singleComment = 1;
var multiComment = 2;

function stripWithoutWhitespace() {
        return '';
}

function stripWithWhitespace(str, start, end) {
        return str.slice(start, end).replace(/\S/g, ' ');
}

module.exports = function (str, opts) {
        opts = opts || {};

        var currentChar;
        var nextChar;
        var insideString = false;
        var insideComment = false;
        var offset = 0;
        var ret = '';
        var strip = opts.whitespace === false ? stripWithoutWhitespace : stripWithWhitespace;

        for (var i = 0; i < str.length; i++) {
                currentChar = str[i];
                nextChar = str[i + 1];

                if (!insideComment && currentChar === '"') {
                        var escaped = str[i - 1] === '\\' && str[i - 2] !== '\\';
                        if (!escaped) {
                                insideString = !insideString;
                        }
                }

                if (insideString) {
                        continue;
                }

                if (!insideComment && currentChar + nextChar === '//') {
                        ret += str.slice(offset, i);
                        offset = i;
                        insideComment = singleComment;
                        i++;
                } else if (insideComment === singleComment && currentChar + nextChar === '\r\n') {
                        i++;
                        insideComment = false;
                        ret += strip(str, offset, i);
                        offset = i;
                        continue;
                } else if (insideComment === singleComment && currentChar === '\n') {
                        insideComment = false;
                        ret += strip(str, offset, i);
                        offset = i;
                } else if (!insideComment && currentChar + nextChar === '/*') {
                        ret += str.slice(offset, i);
                        offset = i;
                        insideComment = multiComment;
                        i++;
                        continue;
                } else if (insideComment === multiComment && currentChar + nextChar === '*/') {
                        i++;
                        insideComment = false;
                        ret += strip(str, offset, i + 1);
                        offset = i + 1;
                        continue;
                }
        }

        return ret + (insideComment ? strip(str.substr(offset)) : str.substr(offset));
};