Update Python value of null/undefined/empty.

Also, fix other parsing issues.

index.js

@@ -4,6 +4,7 @@ var fs = require('fs');
 var sfs = require('safe-replace').create();
 
 function snakeCase(key) {
+  // TODO let user supply list of exceptions
   if ('tlsSni01Port' === key) {
     return 'tls_sni_01_port';
   }
@@ -35,7 +36,7 @@ function parsePythonConf(str, cb) {
 
     if (!line) { return; }
 
-    var parts = line.trim().split('=');
+    var parts = line.split('=');
     var pykey = parts.shift().trim();
     var key = camelCase(pykey);
     var val = parts.join('=').trim();
@@ -46,13 +47,13 @@ function parsePythonConf(str, cb) {
     else if ('False' === val) {
       val = false;
     }
-    else if ('None' === val) {
+    else if ('None' === val || '' === val) {
       val = null;
     }
     else if (/,/.test(val) && !/^"[^"]*"$/.test(val)) {
-      val = val.split(',');
+      val = val.split(',').map(function(x) { return x.trim(); });
     }
-    else if (/^[0-9]+$/.test(val)) {
+    else if (/^-?[0-9]+$/.test(val)) {
       val = parseInt(val, 10);
     }
 
@@ -72,7 +73,7 @@ function parsePythonConf(str, cb) {
 }
 
 function toPyVal(val) {
-  if (null === val) {
+  if (null === val || '' === val) {
     return 'None';
   }
   else if (true === val) {
@@ -90,9 +91,9 @@ function toPyVal(val) {
   else if (Array.isArray(val)) {
     val = val.join(',');
     if (-1 === val.indexOf(',')) {
-      val += ','; // disambguates value from array with one element
+      val += ','; // disambiguates value from array with one element
     }
-    return val; 
+    return val;
   }
 
   return val && JSON.stringify(val);
@@ -116,6 +117,13 @@ function stringifyPythonConf(obj, cb) {
     var num = obj.__keys[key];
     var comment = '';
 
+    if ('undefined' === typeof pyval) {
+      if ('number' === typeof num) {
+        pyval = 'None';
+      } else {
+        return;
+      }
+    }
 
     if ('number' !== typeof num) {
       obj.__lines.push(pykey + ' = ' + pyval);
@@ -127,22 +135,18 @@ function stringifyPythonConf(obj, cb) {
       return;
     }
 
+    if (!obj.__lines[num] || !obj.__lines[num].indexOf) {
+      console.warn('[pyconf] WARN index past array length:');
+      console.log(obj.__lines.length, num, obj.__lines[num]);
+      return;
+    }
+
     // restore comments
     if (-1 !== obj.__lines[num].indexOf('#')) {
       comment = obj.__lines[num].replace(/.*?(\s*#.*)/, '$1');
     }
 
-    if ('undefined' === typeof pyval) {
-      obj.__lines[num] = "___DELETE_ME___";
-    } else {
-      obj.__lines[num] = pykey + ' = ' + pyval + comment;
-    }
-  });
-
-  obj.__lines = obj.__lines.filter(function (line) {
-    if ("___DELETE_ME___" !== line) {
-      return true;
-    }
+    obj.__lines[num] = pykey + ' = ' + pyval + comment;
   });
 
   if ('string' === typeof endline) {

package.json

@@ -1,6 +1,6 @@
 {
   "name": "pyconf",
-  "version": "1.1.0",
+  "version": "1.1.2",
   "description": "Read and write python config files non-destructively (preserves comments)",
   "main": "index.js",
   "scripts": {