Examples of java.io.CharArrayWriter

java.io.CharArrayWriter
CharArrayWriter is used as a character output stream on a character array. The buffer used to store the written characters will grow as needed to accommodate more characters as they are written.

     * @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();
    }

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        if (scriptFileName != null) {
            Reader r = null;
            try {
                File scriptFile = new File(scriptFileName);
                r = new InputStreamReader(new FileInputStream(scriptFile));
                CharArrayWriter w = new CharArrayWriter();
                int n;
                char[] buf = new char[8192];
                while ((n = r.read(buf)) > 0) {
                    w.write(buf, 0, n);
                }
                session.execute(new String(w.toCharArray()));
            } catch (Exception e) {
                LOGGER.debug("Error in initialization script", e);
                System.err.println("Error in initialization script: " + e.getMessage());
            } finally {
                if (r != null) {

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    }
    
    @Override
    public PrintWriter getWriter() throws IOException {
      if (outStream != null) throw new IllegalStateException();
      if (output == null) output = new CharArrayWriter();
      return new PrintWriter(output);
    }

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    }


    String getText(Mark start, Mark stop) throws JasperException {
        Mark oldstart = mark();
        reset(start);
        CharArrayWriter caw = new CharArrayWriter();
        while (!markEquals(stop)) {
            caw.write(nextChar());
        }
        caw.close();
        setCurrent(oldstart);
        return caw.toString();
    }

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        }


        currFileId = fileid;


        try {
            CharArrayWriter caw = new CharArrayWriter();
            char buf[] = new char[1024];
            for (int i = 0 ; (i = reader.read(buf)) != -1 ;)
                caw.write(buf, 0, i);
            caw.close();
            if (current == null) {
                current = new Mark(this, caw.toCharArray(), fileid,
                                   getFile(fileid), master);
            } else {
                current.pushStream(caw.toCharArray(), fileid, getFile(fileid),
                                   longName);
            }
        } catch (Throwable ex) {
            ExceptionUtils.handleThrowable(ex);
            log.error("Exception parsing file ", ex);

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            || !isAllSpace) {


            int line = startMark.getLineNumber();
            int column = startMark.getColumnNumber();


            CharArrayWriter ttext = new CharArrayWriter();
            int lastCh = 0, elType = 0;
            for (int i = 0; i < charBuffer.length(); i++) {


                int ch = charBuffer.charAt(i);
                if (ch == '\n') {
                    column = 1;
                    line++;
                } else {
                    column++;
                }
                if ((lastCh == '$' || lastCh == '#') && ch == '{') {
                    elType = lastCh;
                    if (ttext.size() > 0) {
                        @SuppressWarnings("unused")
                        Node unused = new Node.TemplateText(
                                ttext.toString(), startMark, current);
                        ttext.reset();
                        //We subtract two from the column number to
                        //account for the '[$,#]{' that we've already parsed
                        startMark = new Mark(ctxt, path, line, column - 2);
                    }
                    // following "${" || "#{" to first unquoted "}"
                    i++;
                    boolean singleQ = false;
                    boolean doubleQ = false;
                    lastCh = 0;
                    for (;; i++) {
                        if (i >= charBuffer.length()) {
                            throw new SAXParseException(
                                Localizer.getMessage(
                                    "jsp.error.unterminated",
                                    (char) elType + "{"),
                                locator);


                        }
                        ch = charBuffer.charAt(i);
                        if (ch == '\n') {
                            column = 1;
                            line++;
                        } else {
                            column++;
                        }
                        if (lastCh == '\\' && (singleQ || doubleQ)) {
                            ttext.write(ch);
                            lastCh = 0;
                            continue;
                        }
                        if (ch == '}') {
                            @SuppressWarnings("unused")
                            Node unused = new Node.ELExpression(
                                    (char) elType, ttext.toString(),
                                    startMark, current);
                            ttext.reset();
                            startMark = new Mark(ctxt, path, line, column);
                            break;
                        }
                        if (ch == '"')
                            doubleQ = !doubleQ;
                        else if (ch == '\'')
                            singleQ = !singleQ;


                        ttext.write(ch);
                        lastCh = ch;
                    }
                } else if (lastCh == '\\' && (ch == '$' || ch == '#')) {
                    if (pageInfo.isELIgnored()) {
                        ttext.write('\\');
                    }
                    ttext.write(ch);
                    ch = 0;  // Not start of EL anymore
                } else {
                    if (lastCh == '$' || lastCh == '#' || lastCh == '\\') {
                        ttext.write(lastCh);
                    }
                    if (ch != '$' && ch != '#' && ch != '\\') {
                        ttext.write(ch);
                    }
                }
                lastCh = ch;
            }
            if (lastCh == '$' || lastCh == '#' || lastCh == '\\') {
                ttext.write(lastCh);
            }
            if (ttext.size() > 0) {
                @SuppressWarnings("unused")
                Node unused = new Node.TemplateText(
                        ttext.toString(), startMark, current);
            }
        }
        startMark = new Mark(ctxt, path, locator.getLineNumber(),
                             locator.getColumnNumber());

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        // attribute does not allow RTexpression.
        return "<%=" + ret + "%>";
    }


    private String parseScriptText(String tx) {
        CharArrayWriter cw = new CharArrayWriter();
        int size = tx.length();
        int i = 0;
        while (i < size) {
            char ch = tx.charAt(i);
            if (i + 2 < size && ch == '%' && tx.charAt(i + 1) == '\\'
                    && tx.charAt(i + 2) == '>') {
                cw.write('%');
                cw.write('>');
                i += 3;
            } else {
                cw.write(ch);
                ++i;
            }
        }
        cw.close();
        return cw.toString();
    }

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    private void parseTemplateText(Node parent) throws JasperException {


        if (!reader.hasMoreInput())
            return;


        CharArrayWriter ttext = new CharArrayWriter();
        // Output the first character
        int ch = reader.nextChar();
        if (ch == '\\') {
            reader.pushChar();
        } else {
            ttext.write(ch);
        }


        while (reader.hasMoreInput()) {
            int prev = ch;
            ch = reader.nextChar();
            if (ch == '<') {
                reader.pushChar();
                break;
            } else if ((ch == '$' || ch == '#') && !pageInfo.isELIgnored()) {
                if (!reader.hasMoreInput()) {
                    ttext.write(ch);
                    break;
                }
                if (reader.nextChar() == '{') {
                    reader.pushChar();
                    reader.pushChar();
                    break;
                }
                ttext.write(ch);
                reader.pushChar();
                continue;
            } else if (ch == '\\') {
                if (!reader.hasMoreInput()) {
                    ttext.write('\\');
                    break;
                }
                char next = (char) reader.peekChar();
                // Looking for \% or \$ or \#
                if ((prev == '<' && next == '%') ||
                        ((next == '$' || next == '#') &&
                                !pageInfo.isELIgnored())) {
                    ch = reader.nextChar();
                }
            }
            ttext.write(ch);
        }
        @SuppressWarnings("unused")
        Node unused = new Node.TemplateText(ttext.toString(), start, parent);
    }

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        if (!reader.matches("/>")) {
            if (!reader.matches(">")) {
                err.jspError(start, "jsp.error.unterminated",
                        "&lt;jsp:text&gt;");
            }
            CharArrayWriter ttext = new CharArrayWriter();
            while (reader.hasMoreInput()) {
                int ch = reader.nextChar();
                if (ch == '<') {
                    // Check for <![CDATA[
                    if (!reader.matches("![CDATA[")) {
                        break;
                    }
                    start = reader.mark();
                    Mark stop = reader.skipUntil("]]>");
                    if (stop == null) {
                        err.jspError(start, "jsp.error.unterminated", "CDATA");
                    }
                    String text = reader.getText(start, stop);
                    ttext.write(text, 0, text.length());
                } else if (ch == '\\') {
                    if (!reader.hasMoreInput()) {
                        ttext.write('\\');
                        break;
                    }
                    ch = reader.nextChar();
                    if (ch != '$' && ch != '#') {
                        ttext.write('\\');
                    }
                    ttext.write(ch);
                } else if (ch == '$' || ch == '#') {
                    if (!reader.hasMoreInput()) {
                        ttext.write(ch);
                        break;
                    }
                    if (reader.nextChar() != '{') {
                        ttext.write(ch);
                        reader.pushChar();
                        continue;
                    }
                    // Create a template text node
                    @SuppressWarnings("unused")
                    Node unused = new Node.TemplateText(
                            ttext.toString(), start, parent);


                    // Mark and parse the EL expression and create its node:
                    start = reader.mark();
                    parseELExpression(parent, (char) ch);


                    start = reader.mark();
                    ttext.reset();
                } else {
                    ttext.write(ch);
                }
            }


            @SuppressWarnings("unused")
            Node unused =
                    new Node.TemplateText(ttext.toString(), start, parent);


            if (!reader.hasMoreInput()) {
                err.jspError(start, "jsp.error.unterminated",
                        "&lt;jsp:text&gt;");
            } else if (!reader.matchesETagWithoutLessThan("jsp:text")) {

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            if (stream != null)
            {
                throw new IllegalStateException(
                        "Cannot call getWriter() after getOutputStream() was called");
            }
            writer = new MockPrintWriter(new CharArrayWriter());
        }
        return writer;


    }

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