Example usage for java.io PushbackReader unread

Introduction

In this page you can find the example usage for java.io PushbackReader unread.

Prototype

public void unread(char cbuf[]) throws IOException 

Source Link

Document

Pushes back an array of characters by copying it to the front of the pushback buffer.

Usage

From source file:Main.java

public static void main(String[] args) {

    String s = "from java2s.com";

    StringReader sr = new StringReader(s);

    PushbackReader pr = new PushbackReader(sr, 20);

    try {/*from   w  w  w. ja  v  a2 s .  c om*/
        for (int i = 0; i < 5; i++) {
            char c = (char) pr.read();
            System.out.println(c);
        }

        char cbuf[] = { 'w', 'o', 'r', 'l', 'd' };

        pr.unread(cbuf);

        for (int i = 0; i < 5; i++) {
            char c = (char) pr.read();
            System.out.println(c);
        }

        pr.close();

    } catch (IOException ex) {
        ex.printStackTrace();
    }
}

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From source file:Main.java

public static void main(String[] args) {

    String s = "from java2s.com";

    StringReader sr = new StringReader(s);

    // create a new PushBack reader based on our string reader
    PushbackReader pr = new PushbackReader(sr);

    try {/*from ww  w  .ja v a2s .com*/
        // read the first five chars
        for (int i = 0; i < 5; i++) {
            char c = (char) pr.read();
            System.out.println(c);
        }
        // unread a character
        pr.unread('F');

        // read the next char, which is the one we unread
        char c = (char) pr.read();

        System.out.println(c);

        pr.close();

    } catch (IOException ex) {
        ex.printStackTrace();
    }
}

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From source file:Main.java

public static void main(String[] args) {

    String s = "from java2s.com";

    StringReader sr = new StringReader(s);

    // create a new PushBack reader based on our string reader
    PushbackReader pr = new PushbackReader(sr, 20);

    try {//from  w  ww  .  j  av  a2  s .  c o  m
        // read the first five chars
        for (int i = 0; i < 5; i++) {
            char c = (char) pr.read();
            System.out.println(c);
        }
        // unread a character
        pr.unread('F');

        // read the next char, which is the one we unread
        char c = (char) pr.read();

        System.out.println(c);

        pr.close();

    } catch (IOException ex) {
        ex.printStackTrace();
    }
}

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From source file:net.panthema.BispanningGame.GraphString.java

static int readInt(PushbackReader pr) throws IOException {
    int c;/*from  w w w  .  j  ava 2 s  . co m*/
    ByteArrayOutputStream ba = new ByteArrayOutputStream();
    while ((c = pr.read()) != 0 && (Character.isDigit(c) || c == '-')) {
        ba.write(c);
    }
    pr.unread(c);
    try {
        return Integer.parseInt(ba.toString());
    } catch (NumberFormatException e) {
        throw (new IOException("Error in Graph String: integer format error"));
    }
}

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From source file:ca.uhn.fhir.rest.method.MethodUtil.java

public static MethodOutcome process2xxResponse(FhirContext theContext, int theResponseStatusCode,
        String theResponseMimeType, Reader theResponseReader, Map<String, List<String>> theHeaders) {
    List<String> locationHeaders = new ArrayList<String>();
    List<String> lh = theHeaders.get(Constants.HEADER_LOCATION_LC);
    if (lh != null) {
        locationHeaders.addAll(lh);// w ww .j a  va2s.  c  om
    }
    List<String> clh = theHeaders.get(Constants.HEADER_CONTENT_LOCATION_LC);
    if (clh != null) {
        locationHeaders.addAll(clh);
    }

    MethodOutcome retVal = new MethodOutcome();
    if (locationHeaders != null && locationHeaders.size() > 0) {
        String locationHeader = locationHeaders.get(0);
        BaseOutcomeReturningMethodBinding.parseContentLocation(theContext, retVal, locationHeader);
    }
    if (theResponseStatusCode != Constants.STATUS_HTTP_204_NO_CONTENT) {
        EncodingEnum ct = EncodingEnum.forContentType(theResponseMimeType);
        if (ct != null) {
            PushbackReader reader = new PushbackReader(theResponseReader);

            try {
                int firstByte = reader.read();
                if (firstByte == -1) {
                    BaseOutcomeReturningMethodBinding.ourLog.debug("No content in response, not going to read");
                    reader = null;
                } else {
                    reader.unread(firstByte);
                }
            } catch (IOException e) {
                BaseOutcomeReturningMethodBinding.ourLog.debug("No content in response, not going to read", e);
                reader = null;
            }

            if (reader != null) {
                IParser parser = ct.newParser(theContext);
                IBaseResource outcome = parser.parseResource(reader);
                if (outcome instanceof IBaseOperationOutcome) {
                    retVal.setOperationOutcome((IBaseOperationOutcome) outcome);
                } else {
                    retVal.setResource(outcome);
                }
            }

        } else {
            BaseOutcomeReturningMethodBinding.ourLog.debug("Ignoring response content of type: {}",
                    theResponseMimeType);
        }
    }
    return retVal;
}

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From source file:com.googlecode.awsms.senders.vodafone.VodafoneWebSender.java

/**
 * Check if the user is logged in to www.vodafone.it
 * //from  w w w. ja  v a  2 s .c  o  m
 * @return true if the user is logged in, false otherwise
 * @throws Exception
 */
private boolean isLoggedIn() throws Exception {
    Log.d(TAG, "this.isLoggedIn()");
    Document document;

    try {
        HttpGet request = new HttpGet("https://www.vodafone.it/190/trilogy/jsp/utility/checkUser.jsp");
        HttpResponse response = httpClient.execute(request, httpContext);

        PushbackReader reader = new PushbackReader(new InputStreamReader(response.getEntity().getContent()));

        // fix wrong XML header 
        int first = reader.read();
        while (first != 60)
            first = reader.read();
        reader.unread(first);

        document = new SAXBuilder().build(reader);
        response.getEntity().consumeContent();

    } catch (JDOMException jdom) {
        throw new Exception(context.getString(R.string.WebSenderProtocolError));
    } catch (Exception e) {
        e.printStackTrace();
        throw new Exception(context.getString(R.string.WebSenderNetworkError));
    }

    Element root = document.getRootElement();
    Element child = root.getChild("logged-in");
    return child.getValue().equals("true");
}

---

From source file:com.googlecode.awsms.senders.vodafone.VodafoneWebSender.java

/**
 * Page to be visited before sending a message
 * //from  ww  w .  ja va2  s .c om
 * @throws Exception
 */
private void doPrecheck() throws Exception {
    Log.d(TAG, "this.doPrecheck()");
    Document document = null;

    try {
        HttpGet request = new HttpGet("https://www.vodafone.it/190/fsms/precheck.do?channel=VODAFONE_DW");
        HttpResponse response = httpClient.execute(request, httpContext);

        PushbackReader reader = new PushbackReader(new InputStreamReader(response.getEntity().getContent()));

        // fix wrong XML header 
        int first = reader.read();
        while (first != 60)
            first = reader.read();
        reader.unread(first);

        document = new SAXBuilder().build(reader);
        response.getEntity().consumeContent();

    } catch (JDOMException jdom) {
        throw new Exception(context.getString(R.string.WebSenderProtocolError));
    } catch (Exception e) {
        throw new Exception(context.getString(R.string.WebSenderNetworkError));
    }

    Element root = document.getRootElement();
    @SuppressWarnings("unchecked")
    List<Element> children = root.getChildren("e");
    int status = 0, errorcode = 0;
    for (Element child : children) {
        //      Log.d(TAG, child.getAttributeValue("n"));
        //      if (child.getAttributeValue("v") != null)
        //        Log.d(TAG, child.getAttributeValue("v"));
        //      if (child.getValue() != null)
        //        Log.d(TAG, child.getValue());
        if (child.getAttributeValue("n").equals("STATUS"))
            status = Integer.parseInt(child.getAttributeValue("v"));
        if (child.getAttributeValue("n").equals("ERRORCODE"))
            errorcode = Integer.parseInt(child.getAttributeValue("v"));
    }

    Log.d(TAG, "status code: " + status);
    Log.d(TAG, "error code: " + errorcode);
    if (status != 1)
        parseError(errorcode);
}

---

From source file:com.googlecode.awsms.senders.vodafone.VodafoneWebSender.java

/**
 * Prepare the message to be sent.//from  w ww. ja v  a 2s .co  m
 * 
 * @param sms
 * @throws Exception
 * @returns false if CAPTCHA present
 */
private boolean doPrepare(WebSMS sms) throws Exception {
    Log.d(TAG, "this.doPrepare()");
    Document document;

    try {
        HttpPost request = new HttpPost("https://www.vodafone.it/190/fsms/prepare.do?channel=VODAFONE_DW");
        List<NameValuePair> requestData = new ArrayList<NameValuePair>();
        requestData.add(new BasicNameValuePair("receiverNumber", sms.getReceiverNumber()));
        requestData.add(new BasicNameValuePair("message", sms.getMessage()));
        request.setEntity(new UrlEncodedFormEntity(requestData, HTTP.UTF_8));
        HttpResponse response = httpClient.execute(request, httpContext);

        PushbackReader reader = new PushbackReader(new InputStreamReader(response.getEntity().getContent()));

        // fix wrong XML header 
        int first = reader.read();
        while (first != 60)
            first = reader.read();
        reader.unread(first);

        document = new SAXBuilder().build(reader);
        response.getEntity().consumeContent();

    } catch (JDOMException jdom) {
        throw new Exception(context.getString(R.string.WebSenderProtocolError));
    } catch (Exception e) {
        throw new Exception(context.getString(R.string.WebSenderNetworkError));
    }

    Element root = document.getRootElement();
    @SuppressWarnings("unchecked")
    List<Element> children = root.getChildren("e");
    int status = 0, errorcode = 0;
    for (Element child : children) {
        //      Log.d(TAG, child.getAttributeValue("n"));
        //      if (child.getAttributeValue("v") != null)
        //        Log.d(TAG, child.getAttributeValue("v"));
        //      if (child.getValue() != null)
        //        Log.d(TAG, child.getValue());
        if (child.getAttributeValue("n").equals("STATUS"))
            status = Integer.parseInt(child.getAttributeValue("v"));
        if (child.getAttributeValue("n").equals("ERRORCODE"))
            errorcode = Integer.parseInt(child.getAttributeValue("v"));
        if (child.getAttributeValue("n").equals("CODEIMG")) {
            sms.setCaptchaArray(Base64.decode(child.getValue()));
            return false;
        }
    }

    Log.d(TAG, "status code: " + status);
    Log.d(TAG, "error code: " + errorcode);
    if (status != 1)
        parseError(errorcode);

    return true;
}

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From source file:com.googlecode.awsms.senders.vodafone.VodafoneWebSender.java

/**
 * Send the message (after decoding the CAPTCHA)
 * /*  w  w  w.  j a  v a  2  s  .com*/
 * @param sms
 * @throws Exception
 * @returns false if CAPTCHA still present
 */
private boolean doSend(WebSMS sms) throws Exception {
    Log.d(TAG, "this.doSend()");
    Document document;

    try {
        HttpPost request = new HttpPost("https://www.vodafone.it/190/fsms/send.do?channel=VODAFONE_DW");
        List<NameValuePair> requestData = new ArrayList<NameValuePair>();
        requestData.add(new BasicNameValuePair("verifyCode", sms.getCaptcha()));
        requestData.add(new BasicNameValuePair("receiverNumber", sms.getReceiverNumber()));
        requestData.add(new BasicNameValuePair("message", sms.getMessage()));
        request.setEntity(new UrlEncodedFormEntity(requestData, HTTP.UTF_8));
        HttpResponse response = httpClient.execute(request, httpContext);

        PushbackReader reader = new PushbackReader(new InputStreamReader(response.getEntity().getContent()));

        // fix wrong XML header 
        int first = reader.read();
        while (first != 60)
            first = reader.read();
        reader.unread(first);

        document = new SAXBuilder().build(reader);
        response.getEntity().consumeContent();

    } catch (JDOMException jdom) {
        throw new Exception(context.getString(R.string.WebSenderProtocolError));
    } catch (Exception e) {
        throw new Exception(context.getString(R.string.WebSenderNetworkError));
    }

    Element root = document.getRootElement();
    @SuppressWarnings("unchecked")
    List<Element> children = root.getChildren("e");
    int status = 0, errorcode = 0;
    String returnmsg = null;
    for (Element child : children) {
        //      Log.d(TAG, child.getAttributeValue("n"));
        //      if (child.getAttributeValue("v") != null)
        //        Log.d(TAG, child.getAttributeValue("v"));
        //      if (child.getValue() != null)
        //        Log.d(TAG, child.getValue());
        if (child.getAttributeValue("n").equals("STATUS"))
            status = Integer.parseInt(child.getAttributeValue("v"));
        if (child.getAttributeValue("n").equals("ERRORCODE"))
            errorcode = Integer.parseInt(child.getAttributeValue("v"));
        if (child.getAttributeValue("n").equals("RETURNMSG"))
            returnmsg = child.getValue();
        if (child.getAttributeValue("n").equals("CODEIMG")) {
            sms.setCaptchaArray(Base64.decode(child.getValue()));
            return false;
        }
    }

    Log.d(TAG, "status code: " + status);
    Log.d(TAG, "error code: " + errorcode);
    Log.d(TAG, "return message: " + returnmsg);
    if (status != 1)
        parseError(errorcode);

    return true;
}

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From source file:com.ebuddy.cassandra.structure.StructureConverter.java

@SuppressWarnings("fallthrough")
private Object decodeBytes(byte[] bytes) {
    if (bytes.length == 0) {
        return "";
    }// ww  w  .  j a  v  a  2s  . c  o m

    // look for header char to determine if a JSON object or legacy NestedProperties
    PushbackReader reader = new PushbackReader(
            new InputStreamReader(new ByteArrayInputStream(bytes), UTF8_CHARSET));

    try {
        int firstChar = reader.read();
        switch (firstChar) {
        case '\uFFFF':
            // legacy NestedProperties, obsolete and interpreted now as simply a JSON encoded Map or
            // beginning of a list terminator

            // if the second character is \uFFFF then this is a list terminator value and just return it
            int secondChar = reader.read();
            if (secondChar == '\uFFFF') {
                return Types.LIST_TERMINATOR_VALUE;
            }
            if (secondChar == -1) {
                throw new DataFormatException("Found header FFFF but no data");
            }
            reader.unread(secondChar);
            // fall through and read as a JSON object

        case HEADER_CHAR:
            try {
                return JSON_MAPPER.readValue(reader, Object.class);
            } catch (IOException e) {
                throw new DataFormatException("Could not parse JSON", e);
            }

        default:
            // if no special header, then bytes are just a string
            return new String(bytes, UTF8_CHARSET);
        }
    } catch (IOException ioe) {
        throw new DataFormatException("Could read data", ioe);
    }
}

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