[Stripes-users] content escaping in JSONBuilder

Hi all.

I noticed some errors while using JSONBuilder recently - namely it
doesn't escape string values which results in errors thet trying to
eval() it on the JavaScript side. The following is the changes I've
made to JSONBuilder to eliminate that issue :

- new method added , quote() :

public static String quote(String string) {
 if (string == null || string.length() == 0) {
  return "\"\"";
 }
 char         b;
         char         c = 0;
 int          i;
 int          len = string.length();
 StringBuffer sb = new StringBuffer(len + 4);
 String       t;

 sb.append('"');
 for (i = 0; i < len; i += 1) {
  b = c;
  c = string.charAt(i);
  switch (c) {
   case '\\':
   case '"':
    sb.append('\\');
    sb.append(c);
    break;
   case '/':
    if (b == '<') {
     sb.append('\\');
    }
           sb.append(c);
    break;
   case '\b':
    sb.append("\\b");
    break;
   case '\t':
    sb.append("\\t");
    break;
   case '\n':
    sb.append("\\n");
    break;
   case '\f':
    sb.append("\\f");
    break;
   case '\r':
    sb.append("\\r");
    break;
   default:
    if (c < ' ') {
    t = "000" + Integer.toHexString(c);
    sb.append("\\u" + t.substring(t.length() - 4));
    } else {
     sb.append(c);
    }
   }
 }
 sb.append('"');
 return sb.toString();
}

  
- method getScalarAsString was changed as follows :

public String getScalarAsString(Object in) {
 Class type = in.getClass();
 String result = null;
         if (String.class.isAssignableFrom(type)) {
  result =  quote((String)in) ;
 }
 else if(Date.class.isAssignableFrom(type)) {
  result = "new Date(" + ((Date) in).getTime() + ")";
  }
 else {
  result = in.toString();
 }   
  
 return result ;
}


HTH, Sergey.


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