NutritionFixer.js

(function () {

var koView = ko.views.manager.currentView.scimoz;
var currentPos = koView.currentPos;

try {
    // Group operations into a single undo
    koView.beginUndoAction();
    
    // http://www.bennadel.com/blog/142-ask-ben-javascript-string-replace-method.htm
    String.prototype.replaceAll = function(
            strTarget, // The substring you want to replace
            strSubString // The string you want to replace in.
        ) {
        var strText = this;
        var intIndexOfMatch = strText.indexOf(strTarget);
        // Keep looping while an instance of the target string
        // still exists in the string.
        while (intIndexOfMatch != -1) {
            // Relace out the current instance.
            strText = strText.replace(strTarget, strSubString)
            // Get the index of any next matching substring.
            intIndexOfMatch = strText.indexOf(strTarget);
        }
        // Return the updated string with ALL the target strings
        // replaced out with the new substring.
        return strText;
    };
    
    var fixTrim = function(text) {
        var lines = text.split(/\r\n|\n|\r/);
        if (lines.length) {
            var trimmed = [];
            for (lineNumber in lines) {
                trimmed.push(lines[lineNumber].replace(/^\s+/, '').replace(/\s+$/, ''));
            }
            return trimmed.join('\n');
        }
        return text;
    }
    
    // replace all multi occurence of white space with one space
    var fixSpaces = function(text) {
        return text.replace(/[\t ]+/gmi, ' ');
    }
    
    // remove unwanted characters
    var fixCharacters = function(text) {
        var chars = ['\u2020', '\u00A9', '\u002A', '\u00AE', '*', '\u2122', '\u2026', '\u2019' , '\u2014'];
        for (idx in chars) {
            text = text.replaceAll(chars[idx], '');
        }
        return text;
    };
    
    var fixUnit = function(text) {
        return text.replace(/(\d+)[ \t]+(grams|g|mg|kg|ml|mcg)/gmi, '$1$2');
    };

    if (!!koView.selText) {
        var newText = fixTrim(koView.selText);
        newText = fixCharacters(newText);
        newText = fixSpaces(newText);
        newText = fixUnit(newText);
        koView.replaceSel(newText);
    };
} catch (e) {
    alert(e);
}
finally {
    // Must end undo action or may corrupt edit buffer
    koView.endUndoAction();
}
})();