Example usage for javax.mail.internet MimeUtility mimeCharset

Introduction

In this page you can find the example usage for javax.mail.internet MimeUtility mimeCharset.

Prototype

public static String mimeCharset(String charset) 

Source Link

Document

Convert a java charset into its MIME charset name.

Usage

From source file:com.haulmont.cuba.core.app.EmailSender.java

protected MimeBodyPart createAttachmentPart(SendingAttachment attachment) throws MessagingException {
    DataSource source = new MyByteArrayDataSource(attachment.getContent());

    String mimeType = FileTypesHelper.getMIMEType(attachment.getName());
    String encodedFileName = encodeAttachmentName(attachment);

    String contentId = attachment.getContentId();
    if (contentId == null) {
        contentId = encodedFileName;/*from   w w w  .ja va2  s.  c  om*/
    }

    String disposition = attachment.getDisposition() != null ? attachment.getDisposition() : Part.INLINE;
    String charset = MimeUtility.mimeCharset(
            attachment.getEncoding() != null ? attachment.getEncoding() : StandardCharsets.UTF_8.name());
    String contentTypeValue = String.format("%s; charset=%s; name=\"%s\"", mimeType, charset, encodedFileName);

    MimeBodyPart attachmentPart = new MimeBodyPart();
    attachmentPart.setDataHandler(new DataHandler(source));
    attachmentPart.setHeader("Content-ID", "<" + contentId + ">");
    attachmentPart.setHeader("Content-Type", contentTypeValue);
    attachmentPart.setFileName(encodedFileName);
    attachmentPart.setDisposition(disposition);

    return attachmentPart;
}

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From source file:immf.Util.java

public static String encodeParameter(String name, String value, String encoding, String lang) {
    StringBuffer result = new StringBuffer();
    StringBuffer encodedPart = new StringBuffer();

    boolean needWriteCES = !isAllAscii(value);
    boolean CESWasWritten = false;
    boolean encoded;
    boolean needFolding = false;
    int sequenceNo = 0;
    int column;/*from   w w w  . j  a v a  2s .  c om*/

    while (value.length() > 0) {
        // index of boundary of ascii/non ascii
        int lastIndex;
        boolean isAscii = value.charAt(0) < 0x80;
        for (lastIndex = 1; lastIndex < value.length(); lastIndex++) {
            if (value.charAt(lastIndex) < 0x80) {
                if (!isAscii)
                    break;
            } else {
                if (isAscii)
                    break;
            }
        }
        if (lastIndex != value.length())
            needFolding = true;

        RETRY: while (true) {
            encodedPart.delete(0, encodedPart.length());
            String target = value.substring(0, lastIndex);

            byte[] bytes;
            try {
                if (isAscii) {
                    bytes = target.getBytes("us-ascii");
                } else {
                    bytes = target.getBytes(encoding);
                }
            } catch (UnsupportedEncodingException e) {
                bytes = target.getBytes(); // use default encoding
                encoding = MimeUtility.mimeCharset(MimeUtility.getDefaultJavaCharset());
            }

            encoded = false;
            // It is not strict.
            column = name.length() + 7; // size of " " and "*nn*=" and ";"

            for (int i = 0; i < bytes.length; i++) {
                if (bytes[i] > ' ' && bytes[i] < 'z' && HeaderTokenizer.MIME.indexOf((char) bytes[i]) < 0) {
                    encodedPart.append((char) bytes[i]);
                    column++;
                } else {
                    encoded = true;
                    encodedPart.append('%');
                    String hex = Integer.toString(bytes[i] & 0xff, 16);
                    if (hex.length() == 1) {
                        encodedPart.append('0');
                    }
                    encodedPart.append(hex);
                    column += 3;
                }
                if (column > 76) {
                    needFolding = true;
                    lastIndex /= 2;
                    continue RETRY;
                }
            }

            result.append(";\r\n ").append(name);
            if (needFolding) {
                result.append('*').append(sequenceNo);
                sequenceNo++;
            }
            if (!CESWasWritten && needWriteCES) {
                result.append("*=");
                CESWasWritten = true;
                result.append(encoding).append('\'');
                if (lang != null)
                    result.append(lang);
                result.append('\'');
            } else if (encoded) {
                result.append("*=");
            } else {
                result.append('=');
            }
            result.append(new String(encodedPart));
            value = value.substring(lastIndex);
            break;
        }
    }
    return new String(result);
}

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