Examples with CharArrayWriter java.io.CharArrayWriter used on opensource projects

Example 46 with CharArrayWriter

use of java.io.CharArrayWriter in project jdk8u_jdk by JetBrains.

the class URLEncoder method encode.

/**
     * Translates a string into {@code application/x-www-form-urlencoded}
     * format using a specific encoding scheme. This method uses the
     * supplied encoding scheme to obtain the bytes for unsafe
     * characters.
     * <p>
     * <em><strong>Note:</strong> The <a href=
     * "http://www.w3.org/TR/html40/appendix/notes.html#non-ascii-chars">
     * World Wide Web Consortium Recommendation</a> states that
     * UTF-8 should be used. Not doing so may introduce
     * incompatibilities.</em>
     *
     * @param   s   {@code String} to be translated.
     * @param   enc   The name of a supported
     *    <a href="../lang/package-summary.html#charenc">character
     *    encoding</a>.
     * @return  the translated {@code String}.
     * @exception  UnsupportedEncodingException
     *             If the named encoding is not supported
     * @see URLDecoder#decode(java.lang.String, java.lang.String)
     * @since 1.4
     */
public static String encode(String s, String enc) throws UnsupportedEncodingException {
    boolean needToChange = false;
    StringBuffer out = new StringBuffer(s.length());
    Charset charset;
    CharArrayWriter charArrayWriter = new CharArrayWriter();
    if (enc == null)
        throw new NullPointerException("charsetName");
    try {
        charset = Charset.forName(enc);
    } catch (IllegalCharsetNameException e) {
        throw new UnsupportedEncodingException(enc);
    } catch (UnsupportedCharsetException e) {
        throw new UnsupportedEncodingException(enc);
    }
    for (int i = 0; i < s.length(); ) {
        int c = (int) s.charAt(i);
        //System.out.println("Examining character: " + c);
        if (dontNeedEncoding.get(c)) {
            if (c == ' ') {
                c = '+';
                needToChange = true;
            }
            //System.out.println("Storing: " + c);
            out.append((char) c);
            i++;
        } else {
            // convert to external encoding before hex conversion
            do {
                charArrayWriter.write(c);
                /*
                     * If this character represents the start of a Unicode
                     * surrogate pair, then pass in two characters. It's not
                     * clear what should be done if a bytes reserved in the
                     * surrogate pairs range occurs outside of a legal
                     * surrogate pair. For now, just treat it as if it were
                     * any other character.
                     */
                if (c >= 0xD800 && c <= 0xDBFF) {
                    /*
                          System.out.println(Integer.toHexString(c)
                          + " is high surrogate");
                        */
                    if ((i + 1) < s.length()) {
                        int d = (int) s.charAt(i + 1);
                        /*
                              System.out.println("\tExamining "
                              + Integer.toHexString(d));
                            */
                        if (d >= 0xDC00 && d <= 0xDFFF) {
                            /*
                                  System.out.println("\t"
                                  + Integer.toHexString(d)
                                  + " is low surrogate");
                                */
                            charArrayWriter.write(d);
                            i++;
                        }
                    }
                }
                i++;
            } while (i < s.length() && !dontNeedEncoding.get((c = (int) s.charAt(i))));
            charArrayWriter.flush();
            String str = new String(charArrayWriter.toCharArray());
            byte[] ba = str.getBytes(charset);
            for (int j = 0; j < ba.length; j++) {
                out.append('%');
                char ch = Character.forDigit((ba[j] >> 4) & 0xF, 16);
                // the hex value if ch is a letter.
                if (Character.isLetter(ch)) {
                    ch -= caseDiff;
                }
                out.append(ch);
                ch = Character.forDigit(ba[j] & 0xF, 16);
                if (Character.isLetter(ch)) {
                    ch -= caseDiff;
                }
                out.append(ch);
            }
            charArrayWriter.reset();
            needToChange = true;
        }
    }
    return (needToChange ? out.toString() : s);
}

Example 47 with CharArrayWriter

use of java.io.CharArrayWriter in project android_frameworks_base by crdroidandroid.

the class NetworkStats method toString.

@Override
public String toString() {
    final CharArrayWriter writer = new CharArrayWriter();
    dump("", new PrintWriter(writer));
    return writer.toString();
}

Example 48 with CharArrayWriter

use of java.io.CharArrayWriter in project tika by apache.

the class IOUtils method toCharArray.

/**
     * Get the contents of a <code>Reader</code> as a character array.
     * <p>
     * This method buffers the input internally, so there is no need to use a
     * <code>BufferedReader</code>.
     * 
     * @param input  the <code>Reader</code> to read from
     * @return the requested character array
     * @throws NullPointerException if the input is null
     * @throws IOException if an I/O error occurs
     * @since Commons IO 1.1
     */
public static char[] toCharArray(Reader input) throws IOException {
    CharArrayWriter sw = new CharArrayWriter();
    copy(input, sw);
    return sw.toCharArray();
}

Example 49 with CharArrayWriter

use of java.io.CharArrayWriter in project android_frameworks_base by AOSPA.

the class VolumeInfo method toString.

@Override
public String toString() {
    final CharArrayWriter writer = new CharArrayWriter();
    dump(new IndentingPrintWriter(writer, "    ", 80));
    return writer.toString();
}

Example 50 with CharArrayWriter

use of java.io.CharArrayWriter in project android_frameworks_base by AOSPA.

the class StorageVolume method dump.

/** {@hide} */
// TODO(b/26742218): find out where toString() is called internally and replace these calls by
// dump().
public String dump() {
    final CharArrayWriter writer = new CharArrayWriter();
    dump(new IndentingPrintWriter(writer, "    ", 80));
    return writer.toString();
}