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:org.crazydog.util.spring.FileCopyUtils.java

/**
 * Copy the contents of the given Reader to the given Writer.
 * Closes both when done.//from  ww w.j  a v  a  2  s.  c o  m
 * @param in the Reader to copy from
 * @param out the Writer to copy to
 * @return the number of characters copied
 * @throws IOException in case of I/O errors
 */
public static int copy(Reader in, Writer out) throws IOException {
    org.springframework.util.Assert.notNull(in, "No Reader specified");
    org.springframework.util.Assert.notNull(out, "No Writer specified");
    try {
        int byteCount = 0;
        char[] buffer = new char[BUFFER_SIZE];
        int bytesRead = -1;
        while ((bytesRead = in.read(buffer)) != -1) {
            out.write(buffer, 0, bytesRead);
            byteCount += bytesRead;
        }
        out.flush();
        return byteCount;
    } finally {
        try {
            in.close();
        } catch (IOException ex) {
        }
        try {
            out.close();
        } catch (IOException ex) {
        }
    }
}

From source file:org.wso2.cdm.agent.proxy.ServerApiAccess.java

public static String getResponseBodyContent(final HttpEntity entity) throws IOException, ParseException {

    if (entity == null) {
        throw new IllegalArgumentException("HTTP entity may not be null");
    }//from w  ww .j  ava2s . c  o  m

    InputStream instream = entity.getContent();

    if (instream == null) {
        return "";
    }

    if (entity.getContentLength() > Integer.MAX_VALUE) {
        throw new IllegalArgumentException(

                "HTTP entity too large to be buffered in memory");
    }

    String charset = getContentCharSet(entity);

    if (charset == null) {

        charset = HTTP.DEFAULT_CONTENT_CHARSET;

    }

    Reader reader = new InputStreamReader(instream, charset);

    StringBuilder buffer = new StringBuilder();

    try {

        char[] tmp = new char[1024];

        int l;

        while ((l = reader.read(tmp)) != -1) {

            buffer.append(tmp, 0, l);

        }

    } finally {

        reader.close();

    }

    return buffer.toString();

}

From source file:com.tussle.main.Utility.java

public static String readAll(Reader reader) throws IOException {
    StringBuilder toReturn = new StringBuilder();
    while (reader.ready()) {
        char[] holder = new char[1024];
        int charsRead = reader.read(holder);
        toReturn.append(holder, 0, charsRead);
    }//  ww w .j a va  2 s  . c o  m
    return toReturn.toString();
}

From source file:org.wso2.mdm.agent.proxy.utils.ServerUtilities.java

public static String getResponseBodyContent(final HttpEntity entity) throws IOException, ParseException {

    InputStream instream = entity.getContent();

    if (entity.getContentLength() > Integer.MAX_VALUE) {
        throw new IllegalArgumentException("HTTP entity too large to be buffered in memory.");
    }// www.  j a  v  a 2 s .com

    String charset = getContentCharSet(entity);

    if (charset == null) {
        charset = HTTP.DEFAULT_CONTENT_CHARSET;
    }

    Reader reader = new InputStreamReader(instream, charset);
    StringBuilder buffer = new StringBuilder();

    try {
        char[] bufferSize = new char[1024];
        int length;

        while ((length = reader.read(bufferSize)) != -1) {
            buffer.append(bufferSize, 0, length);
        }
    } finally {
        reader.close();
    }

    return buffer.toString();

}

From source file:com.calebgomer.roadkill_reporter.AsyncReporter.java

private static String _getResponseBody(final HttpEntity entity) throws IOException, ParseException {
    if (entity == null) {
        throw new IllegalArgumentException("HTTP entity may not be null");
    }/*ww w . j a v  a2  s .com*/
    InputStream instream = entity.getContent();
    if (instream == null) {
        return "";
    }
    if (entity.getContentLength() > Integer.MAX_VALUE) {
        throw new IllegalArgumentException("HTTP entity too large to be buffered in memory");
    }
    String charset = getContentCharSet(entity);
    if (charset == null) {
        charset = HTTP.DEFAULT_CONTENT_CHARSET;
    }
    Reader reader = new InputStreamReader(instream, charset);
    StringBuilder buffer = new StringBuilder();
    try {
        char[] tmp = new char[1024];
        int l;
        while ((l = reader.read(tmp)) != -1) {
            buffer.append(tmp, 0, l);
        }
    } finally {
        reader.close();
    }
    return buffer.toString();
}

From source file:com.github.gekoh.yagen.ddl.DDLGenerator.java

public static String read(Reader reader) {
    StringWriter wr = new StringWriter();
    char[] buf = new char[1024];
    int read;//  ww  w  .j a  va2s.co  m
    try {

        while ((read = reader.read(buf)) > -1) {
            wr.write(buf, 0, read);
        }
    } catch (IOException e) {
        e.printStackTrace();
    }
    return wr.toString();
}

From source file:es.uvigo.ei.sing.jarvest.core.HTTPUtils.java

public static String getURLBodyAsString(String url, Map<String, String> additionalHeaders) throws IOException {

    InputStream in = null;/*from  w ww.  j a  v a  2s. c  o  m*/
    try {
        StringBuffer charsetb = new StringBuffer();
        in = getURLBody(url, charsetb, additionalHeaders);

        String charset = validCharset(charsetb.toString());
        Reader reader = new InputStreamReader(in, Charset.forName(charset));

        StringBuffer sbuf = new StringBuffer();

        char[] characters = new char[1024];
        int readed = 0;
        while ((readed = reader.read(characters)) != -1) {
            sbuf.append(characters, 0, readed);
        }
        return sbuf.toString();
    } finally {

        if (in != null)
            in.close();

    }
}

From source file:com.jkoolcloud.tnt4j.streams.configure.state.AbstractFileStreamStateHandler.java

/**
 * Calculates CRC value for bytes read from provided input stream.
 *
 * @param in// ww w  . j a va  2 s . c  o m
 *            reader to read bytes for CRC calculation
 *
 * @return calculated CRC value
 *
 * @throws IOException
 *             if input can't be read.
 */
protected static Long getInputCrc(Reader in) throws IOException {
    char[] buff = new char[BYTES_TO_COUNT_CRC];
    Checksum crc = new CRC32();
    int readLen = in.read(buff);

    if (readLen > 0) {
        String str = new String(buff, 0, readLen);
        final byte[] bytes = str.getBytes(Utils.UTF8);
        crc.update(bytes, 0, bytes.length);
    }

    return crc.getValue();
}

From source file:com.glaf.core.util.IOUtils.java

/**
 * write./* w  w  w. jav a 2  s .c o m*/
 * 
 * @param reader
 *            Reader.
 * @param writer
 *            Writer.
 * @param bufferSize
 *            buffer size.
 * @return count.
 * @throws IOException
 */
public static long write(Reader reader, Writer writer, int bufferSize) throws IOException {
    int read;
    long total = 0;
    char[] buf = new char[BUFFER_SIZE];
    while ((read = reader.read(buf)) != -1) {
        writer.write(buf, 0, read);
        total += read;
    }
    return total;
}

From source file:com.t3.persistence.FileUtil.java

/**
 * Because this method takes a <code>Reader</code> it can be locale-correct by
 * creating a FileReader (for example) that uses UTF-8 or some other charset.
 * /*w w w .  j a v a  2s.co m*/
 * @param r the <code>Reader</code> to obtain textual data from
 * @return an array of <code>char</code>
 * @throws IOException
 */
private static String getChars(Reader r) throws IOException {
    if (r == null) {
        throw new IllegalArgumentException("Reader cannot be null");
    }
    try (StringWriter sw = new StringWriter(10 * 1024)) {
        char[] c = new char[4096];
        while (true) {
            int read = r.read(c);

            if (read == -1) {
                break;
            }
            sw.write(c, 0, read);
        }
        return sw.toString();
    }
}