static private void loadCharacterSetMappings()

in geronimo-mail_2.1_spec/src/main/java/jakarta/mail/internet/MimeUtility.java [946:1029]
62 lines of code
5 McCabe index (conditional complexity)

    static private void loadCharacterSetMappings() {
        java2mime = new HashMap();
        mime2java = new HashMap();


        // normally, these come from a character map file contained in the jar file.
        try {
            final InputStream map = MimeUtility.class.getResourceAsStream("/META-INF/javamail.charset.map");

            if (map != null) {
                // get a reader for this so we can load.
                final BufferedReader reader = new BufferedReader(new InputStreamReader(map));

                readMappings(reader, java2mime);
                readMappings(reader, mime2java);
            }
        } catch (final Exception e) {
        }

        // if any sort of error occurred reading the preferred file version, we could end up with empty
        // mapping tables.  This could cause all sorts of difficulty, so ensure they are populated with at
        // least a reasonable set of defaults.

        // these mappings echo what's in the default file.
        if (java2mime.isEmpty()) {
            java2mime.put("8859_1", "ISO-8859-1");
            java2mime.put("iso8859_1", "ISO-8859-1");
            java2mime.put("iso8859-1", "ISO-8859-1");

            java2mime.put("8859_2", "ISO-8859-2");
            java2mime.put("iso8859_2", "ISO-8859-2");
            java2mime.put("iso8859-2", "ISO-8859-2");

            java2mime.put("8859_3", "ISO-8859-3");
            java2mime.put("iso8859_3", "ISO-8859-3");
            java2mime.put("iso8859-3", "ISO-8859-3");

            java2mime.put("8859_4", "ISO-8859-4");
            java2mime.put("iso8859_4", "ISO-8859-4");
            java2mime.put("iso8859-4", "ISO-8859-4");

            java2mime.put("8859_5", "ISO-8859-5");
            java2mime.put("iso8859_5", "ISO-8859-5");
            java2mime.put("iso8859-5", "ISO-8859-5");

            java2mime.put ("8859_6", "ISO-8859-6");
            java2mime.put("iso8859_6", "ISO-8859-6");
            java2mime.put("iso8859-6", "ISO-8859-6");

            java2mime.put("8859_7", "ISO-8859-7");
            java2mime.put("iso8859_7", "ISO-8859-7");
            java2mime.put("iso8859-7", "ISO-8859-7");

            java2mime.put("8859_8", "ISO-8859-8");
            java2mime.put("iso8859_8", "ISO-8859-8");
            java2mime.put("iso8859-8", "ISO-8859-8");

            java2mime.put("8859_9", "ISO-8859-9");
            java2mime.put("iso8859_9", "ISO-8859-9");
            java2mime.put("iso8859-9", "ISO-8859-9");

            java2mime.put("sjis", "Shift_JIS");
            java2mime.put ("jis", "ISO-2022-JP");
            java2mime.put("iso2022jp", "ISO-2022-JP");
            java2mime.put("euc_jp", "euc-jp");
            java2mime.put("koi8_r", "koi8-r");
            java2mime.put("euc_cn", "euc-cn");
            java2mime.put("euc_tw", "euc-tw");
            java2mime.put("euc_kr", "euc-kr");
        }

        if (mime2java.isEmpty ()) {
            mime2java.put("iso-2022-cn", "ISO2022CN");
            mime2java.put("iso-2022-kr", "ISO2022KR");
            mime2java.put("utf-8", "UTF8");
            mime2java.put("utf8", "UTF8");
            mime2java.put("ja_jp.iso2022-7", "ISO2022JP");
            mime2java.put("ja_jp.eucjp", "EUCJIS");
            mime2java.put ("euc-kr", "KSC5601");
            mime2java.put("euckr", "KSC5601");
            mime2java.put("us-ascii", "ISO-8859-1");
            mime2java.put("x-us-ascii", "ISO-8859-1");
        }
    }