Example usage for java.io InputStream available

Introduction

In this page you can find the example usage for java.io InputStream available.

Prototype

public int available() throws IOException

Source Link

Document

Returns an estimate of the number of bytes that can be read (or skipped over) from this input stream without blocking, which may be 0, or 0 when end of stream is detected.

Usage

From source file:com.ewcms.common.io.HtmlFileUtil.java

public static byte[] readByte(InputStream is) {
    try {//w  w w .j  av  a 2s  .c  o m
        byte r[] = new byte[is.available()];
        is.read(r);
        return r;
    } catch (Exception e) {
        e.printStackTrace();
        return null;
    }
}

From source file:Main.java

public static int readNetSocketBytes(Socket socket, int timeoutMS, byte[] buffer, int maxLen) throws Exception {
    int ret = 0, timeout = -2, bytesAvailable = 0, curRead = 0, waitCount = 0;
    boolean haveData = false;

    InputStream is = socket.getInputStream();
    while (timeout < timeoutMS) {
        bytesAvailable = is.available();
        if (bytesAvailable > 0) {
            haveData = true;// w  w  w  . ja va2  s. c om
            waitCount = 0;
            curRead = ((bytesAvailable > (maxLen - ret)) ? (maxLen - ret) : bytesAvailable);
            curRead = is.read(buffer, ret, curRead);
            ret += curRead;
            if (ret >= maxLen) {
                return ret;
            }
        } else {
            if (timeoutMS == -1) {
                break;
            }
            Thread.sleep(10);
            if (timeoutMS != 0) {
                timeout += 10;
            } else if ((haveData == true) && (waitCount++ > HAVE_DATA_WAIT_RETRIES)) {
                break;
            }
        }
    }
    return ret;
}

From source file:Main.java

/** Gets Bitmap from inputStream downsampled.
 *
 * @param bis/*from  ww w  . jav  a  2  s .  c  om*/
 * @param reqWidth
 * @param reqHeight
 * @return
 */
public static Bitmap decodeSampledBitmapFromStream(InputStream bis, int reqWidth, int reqHeight) {

    InputStream is = new BufferedInputStream(bis);

    try {
        is.mark(is.available());
    } catch (IOException e) {
        e.printStackTrace();
    }

    // First decode with inJustDecodeBounds=true to check dimensions
    BitmapFactory.Options options = new BitmapFactory.Options();
    options.inJustDecodeBounds = true;
    Bitmap bmp0 = BitmapFactory.decodeStream(is, null, options);

    try {
        is.reset();
    } catch (IOException e) {
        e.printStackTrace();
    }

    // Calculate inSampleSize
    //options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);
    options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);
    // Decode bitmap with inSampleSize set
    options.inJustDecodeBounds = false;
    Bitmap bmp = BitmapFactory.decodeStream(is, null, options);
    return bmp;
}

From source file:Main.java

public static byte[] getAssetAsBuffer(Context ctx, String assetName) throws IOException {
    InputStream is = ctx.getAssets().open(assetName);
    int read, available, offset = 0;
    byte[] result = new byte[available = is.available()];
    while (available > 0 && (read = is.read(result, offset, available)) != -1) {
        offset += read;/*from w w  w. j  ava  2 s .  c o  m*/
        available = is.available();
        if (offset + available > result.length) {
            byte[] newResult = new byte[offset + available];
            System.arraycopy(result, 0, newResult, 0, offset);
            result = newResult;
        }
    }
    return result;
}

From source file:fr.logfiletoes.Main.java

/**
 * Convert InputStream to String//from   w  ww. j  av  a 2s.c o m
 * @param is InputStream read to convert to String
 * @return String from InputStream
 * @throws IOException 
 */
public static String inputSteamToString(InputStream is) throws IOException {
    byte[] buffer = new byte[1024];
    StringBuilder sb = new StringBuilder();
    while (is.available() > 0) {
        is.read(buffer);
        sb.append(new String(buffer));
    }
    return sb.toString();
}

From source file:Main.java

public static String loadJSONFromResource(Context context, int resource) {
    if (resource <= 0 || context == null)
        return null;

    String json = null;//  w ww .  j  av a  2s .  co  m
    InputStream is = context.getResources().openRawResource(resource);
    try {
        if (is != null) {
            int size = is.available();
            byte[] buffer = new byte[size];
            is.read(buffer);
            json = new String(buffer, "UTF-8");
        }
    } catch (IOException e) {
        return null;
    } finally {
        try {
            if (is != null)
                is.close();
        } catch (IOException e) {
        }
    }

    return json;
}

From source file:Main.java

public static CharSequence toString(InputStream is) {
    try {//  w w  w  . j a  va  2 s . c  om
        BufferedReader r = new BufferedReader(new InputStreamReader(is));
        StringBuilder total = new StringBuilder(is.available());
        String line;
        while ((line = r.readLine()) != null) {
            total.append(line);
        }
        return total;
    } catch (IOException e) {
        e.printStackTrace();
        return null;
    }
}

From source file:org.apache.sling.testing.clients.util.InputStreamBodyWithLength.java

/**
 * Returns the length of a resource (which is needed for the InputStreamBody
 * to work. Can't currently think of a better solution than going through
 * the resource stream and count.//from  ww  w.  ja  v a  2  s  .  co m
 *
 * @param resourcePath path to the file
 * @return the size of the resource
 */
private static long getResourceStreamLength(String resourcePath) throws ClientException {
    int streamLength = 0;
    InputStream stream = ResourceUtil.getResourceAsStream(resourcePath);
    try {
        for (int avail = stream.available(); avail > 0; avail = stream.available()) {
            streamLength += avail;
            stream.skip(avail);
        }
    } catch (IOException e) {
        throw new ClientException("Could not read " + resourcePath + "!", e);
    } finally {
        try {
            stream.close();
        } catch (IOException e) {
            throw new ClientException("Could not close Inputstream for " + resourcePath + "!", e);
        }
    }
    return streamLength;
}

From source file:Main.java

public static String getJsonDataFromAssets(Context context, String fileName) {
    StringBuilder stringBuilder = new StringBuilder();
    InputStream inputStream = context.getClass().getClassLoader().getResourceAsStream("assets/" + fileName);
    try {// ww w  . java  2s  .c om
        byte[] buffer = new byte[inputStream.available()];
        inputStream.read(buffer);
        String json = new String(buffer, "utf-8");
        stringBuilder = stringBuilder.append(json);
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        try {
            inputStream.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    return stringBuilder.toString();
}

From source file:Main.java

public static String decodeUTF8String(InputStream inputStream) {
    try {//from   w ww  .  j  av  a2  s  . c om
        if (inputStream == null) {
            return "";
        }

        if (inputStream.available() <= 0) {
            return "";
        }

        ByteArrayOutputStream baos = new ByteArrayOutputStream();

        byte[] buff = new byte[1024];

        int len = 0;
        while ((len = inputStream.read(buff, 0, buff.length)) > 0) {

            baos.write(buff, 0, len);
        }

        String str = new String(baos.toByteArray(), "utf-8");

        return str;

    } catch (Exception e) {
        // TODO: handle exception
    }

    return null;
}