public void updateContentType()

in src/main/java/org/apache/commons/mail/Email.java [421:466]
38 lines of code
6 McCabe index (conditional complexity)

    public void updateContentType(final String aContentType)
    {
        if (EmailUtils.isEmpty(aContentType))
        {
            this.contentType = null;
        }
        else
        {
            // set the content type
            this.contentType = aContentType;

            // set the charset if the input was properly formed
            final String strMarker = "; charset=";
            int charsetPos = aContentType.toLowerCase().indexOf(strMarker);

            if (charsetPos != -1)
            {
                // find the next space (after the marker)
                charsetPos += strMarker.length();
                final int intCharsetEnd =
                    aContentType.toLowerCase().indexOf(" ", charsetPos);

                if (intCharsetEnd != -1)
                {
                    this.charset =
                        aContentType.substring(charsetPos, intCharsetEnd);
                }
                else
                {
                    this.charset = aContentType.substring(charsetPos);
                }
            }
            else
            {
                // use the default charset, if one exists, for messages
                // whose content-type is some form of text.
                if (this.contentType.startsWith("text/") && EmailUtils.isNotEmpty(this.charset))
                {
                    final StringBuilder contentTypeBuf = new StringBuilder(this.contentType);
                    contentTypeBuf.append(strMarker);
                    contentTypeBuf.append(this.charset);
                    this.contentType = contentTypeBuf.toString();
                }
            }
        }
    }