Method getPrintableString

app/src/main/java/eu/faircode/email/Helper.java:2394–2416

(String value, boolean debug)

    // https://issuetracker.google.com/issues/37054851

    static String getPrintableString(String value, boolean debug) {
        if (debug) {
            if (value == null)
                return "<null>";
            if (TextUtils.isEmpty(value))
                return "<empty>";
        } else
            return value;
        StringBuilder result = new StringBuilder();
        for (int i = 0; i < value.length(); ) {
            int codepoint = value.codePointAt(i);
            if (debug && codepoint == 10)
                result.append('|');
            else if (debug && codepoint == 32)
                result.append('_');
            else if (!Helper.isPrintableChar(codepoint) || codepoint == 160)
                result.append('{').append(Integer.toHexString(codepoint)).append('}');
            else
                result.append(Character.toChars(codepoint));
            i += Character.charCount(codepoint);
        }
        return result.toString();
    }

    static DateFormat getTimeInstance(Context context) {
        return getTimeInstance(context, SimpleDateFormat.MEDIUM);