Pre-collect info about options on field init

- When initializing fields use the configuration to determine the format
- Cache the line for each option for fastest string compare / replace
- Add logging levels for debugging

Marlin/configurator/index.html

         <label class="newline">Temp Sensor 2:</label><select name="TEMP_SENSOR_2"></select>
         <label class="newline">Bed Temp Sensor:</label><select name="TEMP_SENSOR_BED"></select>
 
+        <label class="newline">Redundant Sensor:</label>
+          <input name="TEMP_SENSOR_1_AS_REDUNDANT" type="checkbox" value="1" checked />
+
+        <label>Max Diff:</label>
+          <input name="MAX_REDUNDANT_TEMP_SENSOR_DIFF" type="text" size="3" maxlength="2" />
+
+        <label class="newline">Temp Residency Time (s):</label>
+          <input name="TEMP_RESIDENCY_TIME" type="text" size="3" maxlength="2" />
+
         <h2>Marlin/Configuration.h</h2>
         <pre id="config_text" class="prettyprint linenums"></pre>
         <h2>Marlin/Configuration_adv.h</h2>

Marlin/configurator/js/configurator.js

   return len ? this.prePad(len, '0') : this;
 };
 
+String.prototype.regEsc = function() {
+  return this.replace(/[.?*+^$[\]\\(){}|-]/g, "\\$&");
+}
+
 /**
  * selectField.addOptions takes an array or keyed object
  */
   // Return this anonymous object as configuratorApp
   return {
     my_public_var: 4,
+    logging: 1,
 
     init: function() {
       self = this; // a 'this' for use when 'this' is something else
       var $uploader = $('#file-upload');
       var fileUploader = new BinaryFileUploader({
         element:    $uploader[0],
-        onFileLoad: function(file) { console.log(this); self.handleFileLoad(file, $uploader); }
+        onFileLoad: function(file) { self.handleFileLoad(file, $uploader); }
       });
 
       if (!fileUploader.hasFileUploaderSupport()) alert('Your browser doesn\'t support the file reading API');
         success: function(txt) {
           // File contents into the textarea
           $config.text(txt);
+          // Get thermistor info too
           self.initThermistorsFromText(txt);
         },
         error: errFunc
 
     initBoardsFromText: function(txt) {
       boards_list = {};
-      var r, findDef = new RegExp('[ \\t]*#define[ \\t]+(BOARD_[^ \\t]+)[ \\t]+(\\d+)[ \\t]*(//[ \\t]*)?(.+)?', 'gm');
+      var r, findDef = new RegExp('[ \\t]*#define[ \\t]+(BOARD_[\\w_]+)[ \\t]+(\\d+)[ \\t]*(//[ \\t]*)?(.+)?', 'gm');
       while((r = findDef.exec(txt)) !== null) {
         boards_list[r[1]] = r[2].prePad(3, '  ') + " — " + r[4].replace(/\).*/, ')');
       }
           this.initField('MOTHERBOARD');
           break;
         default:
-          console.log("Can't parse "+filename);
+          this.log("Can't parse "+filename, 1);
           break;
       }
     },
       this.initField('TEMP_SENSOR_2');
       this.initField('TEMP_SENSOR_BED');
 
+      this.initField('TEMP_SENSOR_1_AS_REDUNDANT');
+      this.initField('MAX_REDUNDANT_TEMP_SENSOR_DIFF');
+
+      this.initField('TEMP_RESIDENCY_TIME');
 
       $('#serial_stepper').jstepper({
         min: 0,
       // prettyPrint();
     },
 
+    /**
+     * initField - make a field responsive and get info
+     * about its configuration file define
+     */
     initField: function(name) {
-      var $elm = $('#'+name), isText = $elm.attr('type') == 'text';
+      var $elm = $('#'+name), elm = $elm[0];
+      if (elm.configInfo === undefined) {
+        elm.configInfo = this.getDefineInfo(name);
+        $elm.on($elm.attr('type') == 'text' ? 'input' : 'change', this.handleChange);
+      }
       this.setFieldFromDefine(name);
-      isText ? $elm.bind('input', this.handleChange) : $elm.change(this.handleChange)
     },
 
     handleChange: function(e) {
-      self.updateDefineForField(e.target);
+      self.updateDefineForField(e.target.id);
     },
 
     handleSwitch: function(e) {
       var $elm = $(e.target), $prev = $elm.prev();
       var on = $elm.prop('checked') || false;
       $prev.attr('disabled', !on);
-      self.setDefineEnabled($prev[0], on);
+      self.setDefineEnabled($prev[0].id, on);
     },
 
-    setDefineEnabled: function(elm, val) {
-      var $elm = $(elm);
+    setDefineEnabled: function(name, val) {
+      this.log('setDefineEnabled:'+name,3);
 
-      // console.log("Enable: " + elm.id + " = " + val);
+      var $elm = $('#'+name), elm = $elm[0], inf = elm.configInfo;
+      var $c = $config; // for now
+      var txt = $c.text();
 
-      var txt = $config.text();
+      var slash = val ? '' : '// ';
+      var newline = inf.line
+        .replace(/^([ \t]*)(\/\/)([ \t]*)/, '$1$3') // remove slashes
+        .replace('#define', slash + '#define');     // add them back
 
-      var findDef = new RegExp('^[ \\t]*(//[ \\t]*)?(#define[ \\t]+' + elm.id + '([ \\t].*)?)$', 'm');
-      txt = txt.replace(findDef, val ? '$2': '//$2');
+      txt = txt.replace(inf.line, newline);
+      inf.line = newline;
+      this.log(newline, 2);
 
-      // Now set the text in the field
-      $config.text(txt);
+      $c.text(txt);
     },
 
-    updateDefineForField: function(elm) {
-      var $elm = $(elm),
-          isCheck = $elm.attr('type') == 'checkbox',
-          val = isCheck ? $elm.prop('checked') : $elm.val();
+    defineIsEnabled: function(name, adv) {
+      this.log('defineIsEnabled:'+name,4);
+      var $elm = $('#'+name), elm = $elm[0];
+      var $c = adv ? $config_adv : $config;
 
-      // console.log("Set: " + elm.id + " = " + val);
+      var result = elm.configInfo.regex.exec($c.text());
+      this.log(result,2);
 
-      var txt = $config.text();
+      var on = result !== null ? result[1].trim() != '//' : true;
+      this.log(name + ' = ' + on, 4);
 
-      if (isCheck) {
-        var findDef = new RegExp('^([ \\t]*)(//[ \\t]*)?(#define[ \\t]+' + elm.id + '([ \\t].*)?)$', 'm');
-        txt = txt.replace(findDef, val ? '$1$3': '$1//$3');
-      }
-      else {
-        // Match the define name, 1 = "#define name ", 3=value, 4=comment
-        var findDef = new RegExp('^([ \\t]*(//)?[ \\t]*#define[ \\t]+' + elm.id + '[ \\t]+)(.*)([ \\t]*(//)?.*)$', 'm');
-        if ($elm.hasClass('quote')) val = '"' + val + '"'
-        txt = txt.replace(findDef, '$1!!REGEXP!!$4').replace('!!REGEXP!!', val);
+      return on;
+    },
+
+    updateDefineForField: function(name, adv) {
+      this.log('updateDefineForField:'+name,4);
+      var $elm = $('#'+name), elm = $elm[0], inf = elm.configInfo;
+      var $c = adv ? $config_adv : $config;
+      var txt = $c.text();
+
+      // var result = inf.repl.exec(txt);
+      // this.log(result, 2);
+
+      var isCheck = $elm.attr('type') == 'checkbox',
+          val = isCheck ? $elm.prop('checked') : $elm.val();
+
+      var newline;
+      switch(inf.type) {
+        case 'switch':
+          var slash = val ? '' : '//';
+          newline = (inf.pre + slash + inf.define + inf.post);
+          break;
+        case 'quoted':
+          if (isCheck) {
+            this.log(name + ' should not be a checkbox', 1);
+            var slash = val ? '' : '//';
+            newline = (inf.pre + slash + inf.define + '"'+val+'"' + inf.post);
+          }
+          else {
+            newline = inf.pre + inf.define + '"'+val+'"' + inf.post;
+          }
+          break;
+        case 'plain':
+          if (isCheck) {
+            this.log(name + ' should not be a checkbox', 1);
+            var slash = val ? '' : '//';
+            newline = (inf.pre + slash + inf.define + val + inf.post);
+          }
+          else {
+            newline = inf.pre + inf.define + val + inf.post;
+          }
+          break;
       }
-      // Now set the text in the field
-      $config.text(txt);
+
+      txt = txt.replace(inf.line, newline);
+      inf.line = newline;
+      this.log(newline, 2);
+
+      $c.text(txt);
     },
 
     setFieldFromDefine: function(name, adv) {
       var isCheck = $elm.attr('type') == 'checkbox';
       var val = this.defineValue(name, adv);
 
+      this.log('setFieldFromDefine:' + name + ' to ' + val, 4);
+
       isCheck ? $elm.prop('checked', val) : $elm.val("" + val);
 
       // If the item has a checkbox then set enabled state too
       }
     },
 
-    defineValue: function(name, adv) {
+    getDefineInfo: function(name, adv) {
+      this.log('getDefineInfo:'+name,4);
       var $elm = $('#'+name), elm = $elm[0];
       var $c = adv ? $config_adv : $config;
-      if ($elm.attr('type') == 'checkbox') {
-        // maybe spaces, maybe comment, #define, spaces, name, maybe a comment
-        var findDef = new RegExp('^[ \\t]*(//[ \\t]*)?(#define[ \\t]+' + elm.id + '([ \\t]*(//)?.*)?)$', 'm');
-        var result = findDef.exec($c.text());
-        return (result ? result[1] == undefined || result[1].trim() != '//' : false);
+
+      // a switch line with no value
+      var findDef = new RegExp('^(.*//)?(.*#define[ \\t]+' + elm.id + ')([ \\t]*/[*/].*)?$', 'm');
+      var result = findDef.exec($c.text());
+      if (result !== null) {
+        var info = {
+          type: 'switch',
+          line: result[0], // whole line
+          pre: result[1] === undefined ? '' : result[1].replace('//',''),
+          define: result[2],
+          post: result[3] === undefined ? '' : result[3]
+        };
+        info.regex = new RegExp('(.*//)?(.*' + info.define.regEsc() + info.post.regEsc() + ')', 'm');
+        info.repl = info.regex;
+        this.log(info,2);
+        return info;
       }
-      else {
-        // maybe spaces, maybe comment, #define, spaces, name, one or more spaces, value, maybe a comment
-        var findDef = new RegExp('^([ \\t]*(//[ \\t]*)?#define[ \\t]+' + elm.id + '[ \\t]+)(.*)([ \\t]*(//)?.*)$', 'm');
-        var result = findDef.exec($c.text());
-        if (result !== null) {
-          var val = result[3];
-          if (val.search(/^".*"$/) >= 0) $elm.addClass('quote');
-          if ($elm.hasClass('quote')) val = val.replace(/^"(.*)"$/, '$1');
-          return val;
-        }
-        return 'fail';
+
+      // a define with quotes
+      findDef = new RegExp('^(.*//)?(.*#define[ \\t]+' + elm.id + '[ \\t]+)("[^"]*")([ \\t]*/[*/].*)?$', 'm');
+      result = findDef.exec($c.text());
+      if (result !== null) {
+        var info = {
+          type: 'quoted',
+          line: result[0],
+          pre: result[1] === undefined ? '' : result[1].replace('//',''),
+          define: result[2],
+          post: result[4] === undefined ? '' : result[4]
+        };
+        info.regex = new RegExp('(.*//)?.*' + info.define.regEsc() + '"([^"]*)"' + info.post.regEsc(), 'm');
+        info.repl  = new RegExp('((.*//)?.*' + info.define.regEsc() + '")[^"]*("' + info.post.regEsc() + ')', 'm');
+        this.log(info,2);
+        return info;
+      }
+
+      // a define with no quotes
+      findDef = new RegExp('^(.*//)?(.*#define[ \\t]+' + elm.id + '[ \\t]+)(\\S*)([ \\t]*/[*/].*)?$', 'm');
+      result = findDef.exec($c.text());
+      if (result !== null) {
+        var info = {
+          type: 'plain',
+          line: result[0],
+          pre: result[1] === undefined ? '' : result[1].replace('//',''),
+          define: result[2],
+          post: result[4] === undefined ? '' : result[4]
+        };
+        info.regex = new RegExp('(.*//)?.*' + info.define.regEsc() + '(\\S*)' + info.post.regEsc(), 'm');
+        info.repl = new RegExp('((.*//)?.*' + info.define.regEsc() + ')\\S*(' + info.post.regEsc() + ')', 'm');
+        this.log(info,2);
+        return info;
       }
+
+      return null;
     },
 
-    defineIsEnabled: function(name, adv) {
-      var $elm = $('#'+name);
+    defineValue: function(name, adv) {
+      this.log('defineValue:'+name,4);
+      var $elm = $('#'+name), elm = $elm[0];
       var $c = adv ? $config_adv : $config;
-      var findDef = new RegExp('^[ \\t]*(//[ \\t]*)?(#define[ \\t]+' + name + '([ \\t]*(//)?.*)?)$', 'm');
-      var result = findDef.exec($c.text());
-      return (result ? result[1].trim() != '//' : false);
+      var inf = elm.configInfo;
+
+      var result = inf.regex.exec($c.text());
+      this.log(result,2);
+      switch(inf.type) {
+        case 'switch': return result[1] != '//';
+        case 'quoted': return result[2];
+        case 'plain':  return result[2];
+      }
+    },
+
+    log: function(o,l) {
+      if (l === undefined) l = 0;
+      if (this.logging>=l*1) console.log(o);
     },
 
     logOnce: function(o) {
       if (typeof o.didLogThisObject === 'undefined') {
-        console.log(o);
+        this.log(o);
         o.didLogThisObject = true;
       }
     },