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:voldemort.utils.VoldemortIOUtils.java

public static long copyLarge(Reader input, Writer output, long limit) throws IOException {
    char[] buffer = new char[DEFAULT_BUFFER_SIZE];
    long count = 0;
    int n = 0;/*w w w  .j av a  2 s  .c  o  m*/
    long remaining = limit;
    while (remaining > 0) {
        n = (remaining > DEFAULT_BUFFER_SIZE) ? input.read(buffer) : input.read(buffer, 0, (int) remaining);
        if (n == -1) {
            break;
        }
        output.write(buffer, 0, n);
        count += n;
        remaining -= n;
    }
    return count;
}

From source file:com.teotigraphix.caustk.utils.RuntimeUtils.java

/**
 * Converts and {@link InputStream} to a String.
 * /*from w ww  .  j  a  v  a  2s  .com*/
 * @param is The {@link InputStream} to read into a String.
 * @return THe String read from the stream.
 * @throws IOException
 */
public static final String convertStreamToString(InputStream is) throws IOException {
    Writer writer = new StringWriter();
    char[] buffer = new char[1024];
    try {
        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();
}

From source file:com.opengamma.engine.calcnode.CalculationNodeProcess.java

private static String getConfigurationXml(final String url) {
    if (s_httpClient == null) {
        s_httpClient = new DefaultHttpClient();
    }//from w w w . j a v a  2  s .c  om
    s_logger.debug("Fetching {}", url);
    final HttpResponse resp;
    try {
        resp = s_httpClient.execute(new HttpGet(url));
    } catch (Exception e) {
        s_logger.warn("Error fetching {} - {}", url, e.getMessage());
        return null;
    }
    s_logger.debug("HTTP result {}", resp.getStatusLine());
    if (resp.getStatusLine().getStatusCode() != 200) {
        s_logger.warn("No configuration available (HTTP {})", resp.getStatusLine().getStatusCode());
        return null;
    }
    try {
        final Reader in = new InputStreamReader(resp.getEntity().getContent());
        final StringBuilder sb = new StringBuilder();
        final char[] buf = new char[1024];
        int i = in.read(buf);
        while (i > 0) {
            sb.append(buf, 0, i);
            i = in.read(buf);
        }
        s_logger.debug("Configuration document received - {} characters", sb.length());
        return sb.toString();
    } catch (IOException e) {
        s_logger.warn("Error retrieving response from {} - {}", url, e.getMessage());
        return null;
    }
}

From source file:Base64.java

/**
 * Decode base64 encoded data.//  w w  w  .  java  2s  . c om
 *
 * @param reader reader for the base64 encoded data to be decoded
 * @param out    stream where the decoded data should be written to
 * @throws java.io.IOException if an i/o error occurs
 */
public static void decode(Reader reader, OutputStream out) throws IOException {
    char[] chunk = new char[8192];
    int read;
    while ((read = reader.read(chunk)) > -1) {
        decode(chunk, 0, read, out);
    }
}

From source file:Main.java

public static String getJsonString(String urlString) throws Exception {
    InputStream is = null;// w  w  w.  j a  v a  2 s . c  o  m
    Reader reader = null;
    StringBuilder str = new StringBuilder();
    URL url = new URL(urlString);
    URLConnection URLConn = url.openConnection();
    URLConn.setRequestProperty("User-agent", "IE/6.0");
    is = URLConn.getInputStream();
    reader = new InputStreamReader(is, "UTF-8");
    char[] buffer = new char[1];
    while (reader.read(buffer) != -1) {
        str.append(new String(buffer));
    }
    return str.toString();
}

From source file:Main.java

public static String getStringFromFile(String pathUrlName, boolean encode) {
    Writer writer = null;/*from   w ww .  j ava 2s  . c om*/
    try {
        InputStream is = new FileInputStream(new File(pathUrlName));

        writer = new StringWriter();
        char[] buffer = new char[1024];
        try {
            Reader reader;
            if (encode) {
                reader = new BufferedReader(new InputStreamReader(is, HTML_ENCODING));
            } else {
                reader = new BufferedReader(new InputStreamReader(is));
            }
            int n;
            while ((n = reader.read(buffer)) != -1) {
                writer.write(buffer, 0, n);
            }

        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } finally {
            is.close();
        }
    } catch (IOException e) {
        e.printStackTrace();
    }
    return writer.toString();
}

From source file:mx.itesm.mexadl.metrics.util.Util.java

/**
 * Load the contents of a configuration file into a String.
 * /*from  w  w  w.  j av a 2 s .c o m*/
 * @param path
 * @return
 * @throws Exception
 */
public static String loadFileContent(final String path) throws Exception {
    String returnValue;
    InputStream inputStream;

    inputStream = Util.class.getClassLoader().getResourceAsStream(path);

    returnValue = null;
    if (inputStream != null) {
        Writer writer = new StringWriter();

        char[] buffer = new char[1024];
        try {
            Reader reader = new BufferedReader(new InputStreamReader(inputStream, "UTF-8"));
            int n;
            while ((n = reader.read(buffer)) != -1) {
                writer.write(buffer, 0, n);
            }
        } finally {
            inputStream.close();
        }
        returnValue = writer.toString();
    }

    return returnValue;
}

From source file:Main.java

public static CharSequence getFileAsString(File file) {
    Reader reader = null;
    StringBuilder sb = new StringBuilder(1024);
    try {/*from w w  w  .  j a v a 2 s  .  com*/
        reader = new InputStreamReader(new FileInputStream(file), Charset.forName("ISO-8859-1"));
        char[] buf = new char[1024];
        int length;
        while ((length = reader.read(buf)) >= 0)
            sb.append(buf, 0, length);
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        closeQuietly(reader);
    }
    String string = sb.toString();
    return string;
}

From source file:com.freedomotic.plugin.purl.Purl.java

private static String readPage(URL url) throws Exception {

    DefaultHttpClient client = new DefaultHttpClient();
    HttpGet request = new HttpGet(url.toURI());
    HttpResponse response = client.execute(request);

    Reader reader = null;
    try {//from   w  ww.j a  va2 s.  c o  m
        reader = new InputStreamReader(response.getEntity().getContent());

        StringBuilder sb = new StringBuilder();
        int read;
        char[] cbuf = new char[1024];
        while ((read = reader.read(cbuf)) != -1) {
            sb.append(cbuf, 0, read);
        }
        return sb.toString();

    } finally {
        if (reader != null) {
            try {
                reader.close();
            } catch (IOException e) {
                //do nothing
            }
        }
    }
}

From source file:cz.incad.kramerius.k5indexer.Commiter.java

/**
 * Pipes everything from the reader to the writer via a buffer
 *///from   www .  j  a  va  2  s  .c  o m
private static void pipe(Reader reader, Writer writer) throws IOException {
    char[] buf = new char[1024];
    int read = 0;
    while ((read = reader.read(buf)) >= 0) {
        writer.write(buf, 0, read);
    }
    writer.flush();
}