Example usage for java.io Reader read

Introduction

In this page you can find the example usage for java.io Reader read.

Prototype

public int read(char cbuf[]) throws IOException 

Source Link

Document

Reads characters into an array.

Usage

From source file:PrintTextWrapPagetation.java

void menuOpen() {
    final String textString;
    FileDialog dialog = new FileDialog(shell, SWT.OPEN);
    dialog.setFilterExtensions(new String[] { "*.java", "*.*" });
    String name = dialog.open();//from   w ww  .  ja  v  a  2s.  c o m
    if ((name == null) || (name.length() == 0))
        return;

    try {
        File file = new File(name);
        FileInputStream stream = new FileInputStream(file.getPath());
        try {
            Reader in = new BufferedReader(new InputStreamReader(stream));
            char[] readBuffer = new char[2048];
            StringBuffer buffer = new StringBuffer((int) file.length());
            int n;
            while ((n = in.read(readBuffer)) > 0) {
                buffer.append(readBuffer, 0, n);
            }
            textString = buffer.toString();
            stream.close();
        } catch (IOException e) {
            MessageBox box = new MessageBox(shell, SWT.ICON_ERROR);
            box.setMessage("Error reading file:\n" + name);
            box.open();
            return;
        }
    } catch (FileNotFoundException e) {
        MessageBox box = new MessageBox(shell, SWT.ICON_ERROR);
        box.setMessage("File not found:\n" + name);
        box.open();
        return;
    }
    text.setText(textString);
}

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From source file:com.silverpeas.jcrutil.model.impl.AbstractJcrTestCase.java

protected String readFileFromNode(Node fileNode)
        throws IOException, ValueFormatException, PathNotFoundException, RepositoryException {
    CharArrayWriter writer = null;
    InputStream in = null;//from  ww w  . j a  va 2s .c  o  m
    Reader reader = null;
    try {
        in = fileNode.getNode(JcrConstants.JCR_CONTENT).getProperty(JcrConstants.JCR_DATA).getStream();
        writer = new CharArrayWriter();
        reader = new InputStreamReader(in);
        char[] buffer = new char[8];
        int c = 0;
        while ((c = reader.read(buffer)) != -1) {
            writer.write(buffer, 0, c);
        }
        return new String(writer.toCharArray());
    } catch (IOException ioex) {
        return null;
    } finally {
        if (reader != null) {
            reader.close();
        }
        if (in != null) {
            in.close();
        }
        if (writer != null) {
            writer.close();
        }
    }
}

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From source file:gtu.youtube.JavaYoutubeVideoUrlHandler.java

private String getStringFromInputStream(String encoding, InputStream instream)
        throws UnsupportedEncodingException, IOException {
    Writer writer = new StringWriter();
    char[] buffer = new char[1024];
    try {/*  w  w  w .  j  a v a  2  s . co  m*/
        Reader reader = new BufferedReader(new InputStreamReader(instream, encoding));
        int n;
        while ((n = reader.read(buffer)) != -1) {
            writer.write(buffer, 0, n);
        }
    } finally {
        instream.close();
    }
    String result = writer.toString();
    return result;
}

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From source file:com.taobao.tdhs.jdbc.TDHSPreparedStatement.java

public void setCharacterStream(int parameterIndex, Reader reader, int length) throws SQLException {
    if (reader == null) {
        setNull(parameterIndex, 0);/*from   w  ww.ja  v  a 2 s. c om*/
        return;
    }
    char[] c = new char[length];
    int read;
    try {
        if ((read = reader.read(c)) != length) {
            throw new SQLException("CharacterStream read length:" + read);
        }
    } catch (IOException e) {
        throw new SQLException(e);
    }
    setString(parameterIndex, new String(c));
}

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From source file:it.infn.ct.aleph_portlet.java

public static String convertStreamToString(InputStream is) throws IOException {
    if (is != null) {
        Writer writer = new StringWriter();
        char[] buffer = new char[1024];
        try {/* w  w w  . java  2  s. co  m*/
            Reader reader = new BufferedReader(new InputStreamReader(is, "UTF-8"));
            int n;
            while ((n = reader.read(buffer)) != -1) {
                writer.write(buffer, 0, n);

            }
        } finally {
            is.close();
        }
        return writer.toString();
    } else {
        return "";
    }
}

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From source file:com.webcohesion.ofx4j.io.BaseOFXReader.java

/**
 * Parse the reader, including the headers.
 *
 * @param reader The reader./*ww w .j a v a2 s.c  o m*/
 */
public void parse(Reader reader) throws IOException, OFXParseException {
    //make sure we're buffering...
    reader = new BufferedReader(reader);

    StringBuilder header = new StringBuilder();
    final char[] firstElementStart = getFirstElementStart();
    final char[] buffer = new char[firstElementStart.length];
    reader.mark(firstElementStart.length);
    int ch = reader.read(buffer);
    while ((ch != -1) && (!Arrays.equals(buffer, firstElementStart))) {
        if (!contains(buffer, '<')) {
            //if the buffer contains a '<', then we might already have marked the beginning.
            reader.mark(firstElementStart.length);
        }
        ch = reader.read();
        char shifted = shiftAndAppend(buffer, (char) ch);
        header.append(shifted);
    }

    if (ch == -1) {
        throw new OFXParseException("Invalid OFX: no root <OFX> element!");
    } else {
        Matcher matcher = OFX_2_PROCESSING_INSTRUCTION_PATTERN.matcher(header);
        if (matcher.find()) {
            if (LOG.isInfoEnabled()) {
                LOG.info("Processing OFX 2 header...");
            }

            processOFXv2Headers(matcher.group(1));
            reader.reset();
            parseV2FromFirstElement(reader);
        } else {
            LOG.info("Processing OFX 1 headers...");
            processOFXv1Headers(header.toString());
            reader.reset();
            parseV1FromFirstElement(reader);
        }
    }
}

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From source file:me.xiaopan.android.gohttp.JsonHttpResponseHandler.java

private String toString(HttpRequest httpRequest, final HttpEntity entity, final String defaultCharset)
        throws IOException, ParseException {
    InputStream inputStream = entity.getContent();
    if (inputStream == null) {
        return "";
    }// www.ja v a  2 s.co m
    if (entity.getContentLength() > Integer.MAX_VALUE) {
        throw new IllegalArgumentException("HTTP entity too large to be buffered in memory");
    }
    int contentLength = (int) entity.getContentLength();
    if (contentLength < 0) {
        contentLength = 4096;
    }
    String charset = StringHttpResponseHandler.getContentCharSet(entity);
    if (charset == null) {
        charset = defaultCharset;
    }
    if (charset == null) {
        charset = HTTP.DEFAULT_CONTENT_CHARSET;
    }

    long averageLength = contentLength / httpRequest.getProgressCallbackNumber();
    int callbackNumber = 0;
    Reader reader = new InputStreamReader(inputStream, charset);
    CharArrayBuffer buffer = new CharArrayBuffer(contentLength);
    HttpRequest.ProgressListener progressListener = httpRequest.getProgressListener();
    try {
        char[] tmp = new char[1024];
        int readLength;
        long completedLength = 0;
        while (!httpRequest.isStopReadData() && (readLength = reader.read(tmp)) != -1) {
            buffer.append(tmp, 0, readLength);
            completedLength += readLength;
            if (progressListener != null && !httpRequest.isCanceled()
                    && (completedLength >= (callbackNumber + 1) * averageLength
                            || completedLength == contentLength)) {
                callbackNumber++;
                new HttpRequestHandler.UpdateProgressRunnable(httpRequest, contentLength, completedLength)
                        .execute();
            }
        }
    } finally {
        reader.close();
    }
    return buffer.toString();
}

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From source file:com.bigdata.gom.TestRemoteGOM.java

void print(final URL n3) throws IOException {
    if (log.isInfoEnabled()) {
        InputStream in = n3.openConnection().getInputStream();
        Reader reader = new InputStreamReader(in);
        try {//  w w w .  j  a va 2 s.  co m
            char[] buf = new char[256];
            int rdlen = 0;
            while ((rdlen = reader.read(buf)) > -1) {
                if (rdlen == 256)
                    System.out.print(buf);
                else
                    System.out.print(new String(buf, 0, rdlen));
            }
        } finally {
            reader.close();
        }
    }
}

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From source file:at.general.solutions.android.ical.remote.HttpDownloadThread.java

@Override
public void run() {
    HttpParams params = new BasicHttpParams();
    ConnManagerParams.setMaxTotalConnections(params, 100);
    HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);
    HttpProtocolParams.setUserAgent(params, USER_AGENT);

    SchemeRegistry schemeRegistry = new SchemeRegistry();
    schemeRegistry.register(new Scheme("http", PlainSocketFactory.getSocketFactory(), 80));
    schemeRegistry.register(new Scheme("https", new EasySSLSocketFactory(), 443));

    ClientConnectionManager cm = new ThreadSafeClientConnManager(params, schemeRegistry);
    DefaultHttpClient client = new DefaultHttpClient(cm, params);

    if (useAuthentication) {
        client.getCredentialsProvider().setCredentials(new AuthScope(AuthScope.ANY_HOST, AuthScope.ANY_PORT),
                new UsernamePasswordCredentials(remoteUsername, remotePassword));
    }//from ww  w  . j  a  v a 2  s.c o m

    HttpGet get = new HttpGet(remoteUrl);

    try {
        super.sendInitMessage(R.string.downloading);

        HttpResponse response = client.execute(get);
        Log.d(LOG_TAG, response.getStatusLine().getReasonPhrase() + " "
                + isGoodResponse(response.getStatusLine().getStatusCode()));
        if (isGoodResponse(response.getStatusLine().getStatusCode())) {
            HttpEntity entity = response.getEntity();

            InputStream instream = entity.getContent();
            if (instream == null) {
                super.sendErrorMessage(R.string.couldnotConnectToRemoteserver);
                return;
            }
            if (entity.getContentLength() > Integer.MAX_VALUE) {
                super.sendErrorMessage(R.string.remoteFileTooLarge);
                return;
            }
            int i = (int) entity.getContentLength();
            if (i < 0) {
                i = 4096;
            }
            String charset = EntityUtils.getContentCharSet(entity);
            if (charset == null) {
                charset = encoding;
            }
            if (charset == null) {
                charset = HTTP.DEFAULT_CONTENT_CHARSET;
            }
            Reader reader = new InputStreamReader(instream, charset);
            CharArrayBuffer buffer = new CharArrayBuffer(i);

            super.sendMaximumMessage(i);

            try {
                char[] tmp = new char[1024];
                int l;
                while ((l = reader.read(tmp)) != -1) {
                    buffer.append(tmp, 0, l);
                    super.sendProgressMessage(buffer.length());
                }
            } finally {
                reader.close();
            }

            super.sendFinishedMessage(buffer.toString());
        } else {
            int errorMsg = R.string.couldnotConnectToRemoteserver;
            if (isAccessDenied(response.getStatusLine().getStatusCode())) {
                errorMsg = R.string.accessDenied;
            } else if (isFileNotFound(response.getStatusLine().getStatusCode())) {
                errorMsg = R.string.remoteFileNotFound;
            }
            super.sendErrorMessage(errorMsg);
        }
    } catch (UnknownHostException e) {
        super.sendErrorMessage(R.string.unknownHostException, e);
        Log.e(LOG_TAG, "Error occured", e);
    } catch (Throwable e) {
        super.sendErrorMessage(R.string.couldnotConnectToRemoteserver, e);
        Log.e(LOG_TAG, "Error occured", e);
    }

    finally {
        client.getConnectionManager().shutdown();
    }
}

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