Example usage for java.io InputStreamReader read

Introduction

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

Prototype

public int read(char cbuf[], int offset, int length) throws IOException 

Source Link

Document

Reads characters into a portion of an array.

Usage

From source file:net.sourceforge.squirrel_sql.fw.datasetviewer.cellcomponent.DataTypeBigDecimal.java

/**
 * Read a file and construct a valid object from its contents.
 * Errors are returned by throwing an IOException containing the
 * cause of the problem as its message.//w  ww.j  a v  a2 s  .  c om
 * <P>
 * DataType is responsible for validating that the imported
 * data can be converted to an object, and then must return
 * a text string that can be used in the Popup window text area.
 * This object-to-text conversion is the same as is done by
 * the DataType object internally in the getJTextArea() method.
 * 
 * <P>
 * File is assumed to be and ASCII string of digits
 * representing a value of this data type.
 */
public String importObject(FileInputStream inStream) throws IOException {

    InputStreamReader inReader = new InputStreamReader(inStream);

    int fileSize = inStream.available();

    char charBuf[] = new char[fileSize];

    int count = inReader.read(charBuf, 0, fileSize);

    if (count != fileSize)
        throw new IOException("Could read only " + count + " chars from a total file size of " + fileSize
                + ". Import failed.");

    // convert file text into a string
    // Special case: some systems tack a newline at the end of
    // the text read.  Assume that if last char is a newline that
    // we want everything else in the line.
    String fileText;
    if (charBuf[count - 1] == KeyEvent.VK_ENTER)
        fileText = new String(charBuf, 0, count - 1);
    else
        fileText = new String(charBuf);

    // test that the string is valid by converting it into an
    // object of this data type
    StringBuffer messageBuffer = new StringBuffer();
    validateAndConvertInPopup(fileText, null, messageBuffer);
    if (messageBuffer.length() > 0) {
        ;
        // convert number conversion issue into IO issue for consistancy
        throw new IOException(
                "Text does not represent data of type " + getClassName() + ".  Text was:\n" + fileText);
    }

    // return the text from the file since it does
    // represent a valid value of this data type
    return fileText;
}

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From source file:org.codehaus.mojo.tomcat.TomcatManager.java

/**
 * Gets the data from the specified input stream as a string using the specified charset.
 * /*ww  w . j av  a  2 s  .  co  m*/
 * @param in the input stream to read from
 * @param charset the charset to use when constructing the string
 * @return a string representation of the data read from the input stream
 * @throws IOException if an i/o error occurs
 */
private String toString(InputStream in, String charset) throws IOException {
    InputStreamReader reader = new InputStreamReader(in, charset);

    StringBuffer buffer = new StringBuffer();
    char[] chars = new char[1024];
    int n;
    while ((n = reader.read(chars, 0, chars.length)) != -1) {
        buffer.append(chars, 0, n);
    }

    return buffer.toString();
}

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From source file:org.apache.tapestry.engine.DefaultTemplateSource.java

/**
 *  Reads a Stream into memory as an array of characters.
 *
 **//*from  ww  w  .j  av  a 2  s . co m*/

private char[] readTemplateStream(InputStream stream, String encoding) throws IOException {
    char[] charBuffer = new char[BUFFER_SIZE];
    StringBuffer buffer = new StringBuffer();

    InputStreamReader reader;
    if (encoding != null)
        reader = new InputStreamReader(new BufferedInputStream(stream), encoding);
    else
        reader = new InputStreamReader(new BufferedInputStream(stream));

    try {
        while (true) {
            int charsRead = reader.read(charBuffer, 0, BUFFER_SIZE);

            if (charsRead <= 0)
                break;

            buffer.append(charBuffer, 0, charsRead);
        }
    } finally {
        reader.close();
    }

    // OK, now reuse the charBuffer variable to
    // produce the final result.

    int length = buffer.length();

    charBuffer = new char[length];

    // Copy the character out of the StringBuffer and into the
    // array.

    buffer.getChars(0, length, charBuffer, 0);

    return charBuffer;
}

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From source file:at.pardus.android.browser.PardusMessageChecker.java

/**
 * Tries to get the msgFrame via an HTTP GET request, parses it for new
 * messages/logs and displays the result.
 * /*from  w  w  w . j  av a  2  s . c  o  m*/
 * Does not need to be run on the UI thread.
 */
public void check() {
    if (universe == null) {
        return;
    }
    if (PardusConstants.DEBUG) {
        Log.v(this.getClass().getSimpleName(), "Checking for new messages/logs");
    }
    InputStreamReader reader = null;
    try {
        HttpResponse response = httpClient.execute(httpGet);
        HttpEntity entity = response.getEntity();
        if (entity == null) {
            Log.w(this.getClass().getSimpleName(), "Could not check for messages (error in response)");
            return;
        }
        reader = new InputStreamReader(entity.getContent());
        StringBuilder sb = new StringBuilder();
        char[] buffer = new char[2048];
        int i = 0;
        while ((i = reader.read(buffer, 0, buffer.length)) >= 0) {
            if (i > 0) {
                sb.append(buffer, 0, i);
            }
        }
        String responseStr = sb.toString();
        parseResponse(responseStr);
    } catch (ClientProtocolException e) {
        Log.e(this.getClass().getSimpleName(), "Could not check for messages (error in protocol)", e);
    } catch (IOException e) {
        Log.w(this.getClass().getSimpleName(), "Could not check for messages (error reading response)", e);
    } catch (Exception e) {
        Log.e(this.getClass().getSimpleName(), "Could not check for messages (unknown error)", e);
    } finally {
        if (reader != null) {
            try {
                reader.close();
            } catch (IOException e) {

            }
        }
    }
}

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From source file:sos.Sos.java

/** Getter for post content
 * /*from  w ww.  j  a  v  a  2s  . c  om*/
 * @param request
 * @return the post content
 */
private String getPostContent(HttpServletRequest request, SnannySostServerConfig snannySostServerConfig) {
    try {
        // Don't use request.getReader() , fix charset with InputStreamReader
        ServletInputStream servletInputStream = request.getInputStream();
        InputStreamReader inputStreamReader = new InputStreamReader(request.getInputStream(),
                snannySostServerConfig.getCharset());
        StringBuilder buffer = new StringBuilder();
        char[] buf = new char[4 * 1024]; // 4Kchar buffer
        int len;
        while ((len = inputStreamReader.read(buf, 0, buf.length)) != -1) {
            buffer.append(buf, 0, len);
        }
        return (buffer.toString());
    } catch (IOException ex) {
        throw new SnannySostServerException(SnannySostServerMessages.ERROR_IO_POST, Status.SERVICE_UNAVAILABLE);
    }
}

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From source file:com.xmlcalabash.library.ApacheHttpRequest.java

public void readBodyContentPart(TreeWriter tree, InputStream bodyStream, String contentType, String charset)
        throws SaxonApiException, IOException {
    if (xmlContentType(contentType)) {
        // Read it as XML
        SAXSource source = new SAXSource(new InputSource(bodyStream));
        DocumentBuilder builder = runtime.getProcessor().newDocumentBuilder();
        tree.addSubtree(builder.build(source));
    } else if (textContentType(contentType)) {
        // Read it as text

        InputStreamReader reader = new InputStreamReader(bodyStream, charset);

        char buf[] = new char[bufSize];
        int len = reader.read(buf, 0, bufSize);
        while (len >= 0) {
            tree.addText(new String(buf, 0, len));
            len = reader.read(buf, 0, bufSize);
        }//from  w ww .j a  v  a2 s .c o  m
    } else {
        // Read it as binary
        byte bytes[] = new byte[bufSize];
        int pos = 0;
        int readLen = bufSize;
        int len = bodyStream.read(bytes, 0, bufSize);
        while (len >= 0) {
            pos += len;
            readLen -= len;
            if (readLen == 0) {
                System.err.println("Encoding " + readLen + " bytes (from " + pos + ")");
                tree.addText(Base64.encodeBytes(bytes));
                pos = 0;
                readLen = bufSize;
            }

            len = bodyStream.read(bytes, pos, readLen);
        }

        if (pos > 0) {
            byte lastBytes[] = new byte[pos];
            System.arraycopy(bytes, 0, lastBytes, 0, pos);
            tree.addText(Base64.encodeBytes(lastBytes));
        }

        tree.addText("\n"); // FIXME: should we be doing this?
    }
}

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From source file:org.adblockplus.android.AdblockPlus.java

@Override
public void onCreate() {
    super.onCreate();
    instance = this;

    // Check for crash report
    try {/*from w  ww  .j  a  va  2s.  c o m*/
        InputStreamReader reportFile = new InputStreamReader(openFileInput(CrashHandler.REPORT_FILE));
        final char[] buffer = new char[0x1000];
        StringBuilder out = new StringBuilder();
        int read;
        do {
            read = reportFile.read(buffer, 0, buffer.length);
            if (read > 0)
                out.append(buffer, 0, read);
        } while (read >= 0);
        String report = out.toString();
        if (!"".equals(report)) {
            final Intent intent = new Intent(this, CrashReportDialog.class);
            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            intent.putExtra("report", report);
            startActivity(intent);
        }
    } catch (FileNotFoundException e) {
        // ignore
    } catch (IOException e) {
        // TODO Auto-generated catch block
        Log.e(TAG, e.getMessage(), e);
    }

    // Set crash handler
    Thread.setDefaultUncaughtExceptionHandler(new CrashHandler(this));

    // Initiate update check
    scheduleUpdater(0);
}

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From source file:ch.randelshofer.cubetwister.HTMLExporter.java

/**
 * Reads the content of the input stream into a list of token.
 * If a token start with "${", its a placeholder.
 * If a token doesn't start with "${" its a literal text.
 *//*from   w  w w.  j  a va 2 s  . co  m*/
private String[] toTokens(String filename, InputStream in) throws IOException {
    InputStreamReader reader = new InputStreamReader(in, "UTF8");
    StringBuilder buf = new StringBuilder();
    char[] cbuf = new char[256];
    int len;
    while (-1 != (len = reader.read(cbuf, 0, cbuf.length))) {
        buf.append(cbuf, 0, len);
    }

    int p1 = 0;
    int p2 = 0;
    LinkedList<String> tokens = new LinkedList<String>();
    while (true) {
        p1 = buf.indexOf("${", p2);
        if (p1 == -1) {
            break;
        }
        tokens.add(buf.substring(p2, p1));
        p2 = buf.indexOf("}", p1 + 2);
        if (p2 == -1) {
            throw new IOException("Closing curly bracket missing in " + filename + " after position " + p1);
        }
        p2++;
        tokens.add(buf.substring(p1, p2));
    }
    if (p2 != buf.length()) {
        tokens.add(buf.substring(p2));
    }
    return tokens.toArray(new String[tokens.size()]);
}

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From source file:com.comcast.cqs.test.stress.CqsStressTester.java

public String send(String endpoint, String message) throws Exception {

    logger.debug("event=send_http_request endpoint=" + endpoint + "\" message=\"" + message + "\"");

    if ((message == null) || (endpoint == null)) {
        logger.debug("event=send_http_request error_code=MissingParameters endpoint=" + endpoint
                + "\" message=\"" + message + "\"");
        throw new Exception("Message and Endpoint must both be set");
    }//from   w w  w .ja  v a 2s .com

    HttpPost httpPost = new HttpPost(endpoint);
    StringEntity stringEntity = new StringEntity(message);
    httpPost.setEntity(stringEntity);

    HttpResponse response = httpClient.execute(httpPost);
    response.getStatusLine().getStatusCode();

    HttpEntity entity = response.getEntity();

    if (entity != null) {
        InputStream instream = entity.getContent();
        InputStreamReader responseReader = new InputStreamReader(instream);
        StringBuffer responseB = new StringBuffer();

        char[] arr = new char[1024];
        int size = 0;

        while ((size = responseReader.read(arr, 0, arr.length)) != -1) {
            responseB.append(arr, 0, size);
        }

        instream.close();
        return responseB.toString();
    }

    logger.error("Could not get response entity");
    System.exit(1);
    return null;
}

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From source file:com.xmlcalabash.library.HttpRequest.java

public void readBodyContentPart(TreeWriter tree, InputStream bodyStream, String contentType, String charset)
        throws SaxonApiException, IOException {
    if (xmlContentType(contentType)) {
        // Read it as XML
        tree.addSubtree(runtime.parse(new InputSource(bodyStream)));
    } else if (textContentType(contentType)) {
        // Read it as text

        InputStreamReader reader = new InputStreamReader(bodyStream, charset);

        char buf[] = new char[bufSize];
        int len = reader.read(buf, 0, bufSize);
        while (len >= 0) {
            String s = new String(buf, 0, len);
            tree.addText(s);/*from   w w w. j  a  v  a  2 s  .com*/
            len = reader.read(buf, 0, bufSize);
        }
    } else if (jsonContentType(contentType)) {
        InputStreamReader reader = new InputStreamReader(bodyStream);
        JSONTokener jt = new JSONTokener(reader);
        XdmNode jsonDoc = JSONtoXML.convert(runtime.getProcessor(), jt, runtime.jsonFlavor());
        tree.addSubtree(jsonDoc);
    } else {
        // Read it as binary
        byte bytes[] = new byte[bufSize];
        int pos = 0;
        int readLen = bufSize;
        int len = bodyStream.read(bytes, 0, bufSize);
        while (len >= 0) {
            pos += len;
            readLen -= len;
            if (readLen == 0) {
                String encoded = Base64.encodeBytes(bytes);
                tree.addText(encoded);
                pos = 0;
                readLen = bufSize;
            }

            len = bodyStream.read(bytes, pos, readLen);
        }

        if (pos > 0) {
            byte lastBytes[] = new byte[pos];
            System.arraycopy(bytes, 0, lastBytes, 0, pos);
            tree.addText(Base64.encodeBytes(lastBytes));
        }

        tree.addText("\n"); // FIXME: should we be doing this?
    }
}

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