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///////////////////////////////////////////////////////////////// |
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// |
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// Copyright (C) 2005 Affymetrix, Inc. |
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// |
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// This library is free software; you can redistribute it and/or modify |
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// it under the terms of the GNU Lesser General Public License as published |
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// by the Free Software Foundation; either version 2.1 of the License, |
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// or (at your option) any later version. |
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// |
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// This library is distributed in the hope that it will be useful, but |
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// WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
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// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License |
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// for more details. |
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// |
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// You should have received a copy of the GNU Lesser General Public License |
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// along with this library; if not, write to the Free Software Foundation, Inc., |
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// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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// |
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///////////////////////////////////////////////////////////////// |
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package affymetrix.gcos; |
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|
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import java.io.*; |
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import java.nio.*; |
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|
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import affymetrix.portability.*; |
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|
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/** |
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* |
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* @author ljevon |
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*/ |
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public class FileIO { |
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|
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/** Creates a new instance of FileIO */ |
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public FileIO() { |
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} |
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|
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/** Reads an integer from a little endian file. |
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* @param fis The file stream. |
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* @return The integer. |
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*/ |
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public static int ReadInt32_I(InputStream fis) |
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{ |
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byte[] b = new byte[DataSizes.INT_SIZE]; |
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try |
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{ |
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fis.read(b); |
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return ByteBuffer.wrap(b).order(ByteOrder.LITTLE_ENDIAN).getInt(); |
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} |
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catch (Throwable t) |
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{ |
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return 0; |
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} |
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} |
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|
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/** Reads an integer from a little endian file and then pushes it back again. |
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* @param fis The file stream. |
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* @return The integer. |
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*/ |
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public static int PeekInt32_I(PushbackInputStream fis) |
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{ |
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byte[] b = new byte[DataSizes.INT_SIZE]; |
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try |
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{ |
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fis.read(b); |
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fis.unread(b); |
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return ByteBuffer.wrap(b).order(ByteOrder.LITTLE_ENDIAN).getInt(); |
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} |
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catch (Throwable t) |
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{ |
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return 0; |
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} |
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} |
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|
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|
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/** Reads a float from a little endian file. |
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* @param fis The file stream. |
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* @return The float. |
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*/ |
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public static float ReadFloat_I(InputStream fis) |
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{ |
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byte[] b = new byte[DataSizes.FLOAT_SIZE]; |
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try |
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{ |
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fis.read(b); |
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return ByteBuffer.wrap(b).order(ByteOrder.LITTLE_ENDIAN).getFloat(); |
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} |
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catch (Throwable t) |
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{ |
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return 0.0f; |
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} |
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} |
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|
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/** Reads a short from a little endian file. |
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* @param fis The file stream. |
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* @return The short. |
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*/ |
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public static short ReadInt16_I(InputStream fis) |
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{ |
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byte[] b = new byte[DataSizes.SHORT_SIZE]; |
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try |
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{ |
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fis.read(b); |
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return ByteBuffer.wrap(b).order(ByteOrder.LITTLE_ENDIAN).getShort(); |
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} |
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catch (Throwable t) |
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{ |
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return 0; |
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} |
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} |
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|
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/** Reads an unsigned short from a little endian file. |
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* @param fis The file stream. |
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* @return The value as an integer. |
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*/ |
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public static int ReadUInt16_I(InputStream fis) |
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{ |
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byte[] b = new byte[DataSizes.SHORT_SIZE]; |
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try |
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{ |
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fis.read(b); |
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return ByteBuffer.wrap(b).order(ByteOrder.LITTLE_ENDIAN).getShort(); |
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} |
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catch (Throwable t) |
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{ |
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return 0; |
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} |
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} |
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|
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/** Reads a byte from a little endian file. |
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* @param fis The file stream. |
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* @return The byte. |
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*/ |
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public static byte ReadInt8(InputStream fis) |
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{ |
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try |
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{ |
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return (byte) fis.read(); |
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} |
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catch (Throwable t) |
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{ |
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return 0; |
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} |
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} |
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|
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/** Reads a byte from a little endian file and then pushes it back again. |
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* @param fis The file stream. |
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* @return The byte. |
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*/ |
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public static byte PeekInt8(PushbackInputStream pin) |
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{ |
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try |
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{ |
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int b = pin.read(); |
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pin.unread(b); |
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return (byte)b; |
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} |
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catch (Throwable t) |
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{ |
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return 0; |
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} |
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} |
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/** Reads a string from a little endian file. |
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* @param fis The file stream. |
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* @return The string. |
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*/ |
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public static String ReadString_I(InputStream fis) |
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{ |
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try |
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{ |
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int n = ReadInt32_I(fis); |
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if (n > 0) |
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{ |
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return ReadFixedString(fis, n); |
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} |
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} |
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catch (Throwable t) |
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{ |
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} |
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return null; |
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} |
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|
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/** Read a string of fixed length. |
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* @param fis The file stream. |
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* @param len The length of the string. |
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* @return The string. |
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*/ |
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public static String ReadFixedString(InputStream fis, int len) { |
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try |
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{ |
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byte[] b = new byte[len]; |
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int offset = 0; |
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int numRead = 0; |
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while (numRead < len) |
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{ |
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numRead += fis.read(b, numRead, len-numRead); |
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} |
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String str = new String(); |
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for (int i=0; i<len; i++) |
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{ |
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if (b[i] == 0) |
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break; |
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str += (char) b[i]; |
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} |
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return str; |
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} |
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catch (Throwable t) |
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{ |
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} |
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return null; |
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} |
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|
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/** Reads the next line of text. |
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* @param b The buffered reader. |
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* @return The next line from the file or null if not found. |
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*/ |
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public static String ReadNextLine(BufferedReader b) { |
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String str; |
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try |
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nicklas |
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{ |
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while ((str = b.readLine()) != null) |
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{ |
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nicklas |
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if (str.length() > 0) |
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13 Sep 07 |
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return str; |
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226 |
} |
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13 Sep 07 |
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} |
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13 Sep 07 |
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catch (Throwable t) |
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13 Sep 07 |
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{ |
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230 |
} |
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13 Sep 07 |
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231 |
return null; |
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13 Sep 07 |
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232 |
} |
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13 Sep 07 |
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|
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13 Sep 07 |
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/** Reads the next floating point value from the buffer. |
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13 Sep 07 |
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* @param buffer The buffered reader. |
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13 Sep 07 |
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* @param offset The offset to the file. |
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13 Sep 07 |
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* @return The next floating point value. |
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13 Sep 07 |
nicklas |
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*/ |
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13 Sep 07 |
nicklas |
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public static float MmGetFloat_I(MappedByteBuffer buffer, int offset) { |
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ByteBuffer b = (ByteBuffer)buffer.position(offset); |
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13 Sep 07 |
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241 |
return b.getFloat(); |
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13 Sep 07 |
nicklas |
242 |
} |
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13 Sep 07 |
nicklas |
243 |
|
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13 Sep 07 |
nicklas |
/** Reads the next integer from the buffer. |
11 |
13 Sep 07 |
nicklas |
* @param buffer The buffered reader. |
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13 Sep 07 |
nicklas |
* @param offset The offset to the file. |
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13 Sep 07 |
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* @return The next integer value. |
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13 Sep 07 |
nicklas |
248 |
*/ |
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13 Sep 07 |
nicklas |
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public static int MmGetInt32_I(MappedByteBuffer buffer, int offset) { |
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13 Sep 07 |
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ByteBuffer b = (ByteBuffer)buffer.position(offset); |
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13 Sep 07 |
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return b.getInt(); |
11 |
13 Sep 07 |
nicklas |
252 |
} |
11 |
13 Sep 07 |
nicklas |
253 |
|
11 |
13 Sep 07 |
nicklas |
/** Reads the next short from the buffer. |
11 |
13 Sep 07 |
nicklas |
* @param buffer The buffered reader. |
11 |
13 Sep 07 |
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* @param offset The offset to the file. |
11 |
13 Sep 07 |
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* @return The next short value. |
11 |
13 Sep 07 |
nicklas |
258 |
*/ |
11 |
13 Sep 07 |
nicklas |
259 |
public static short MmGetUInt16_I(MappedByteBuffer buffer, int offset) { |
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13 Sep 07 |
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260 |
ByteBuffer b = (ByteBuffer)buffer.position(offset); |
11 |
13 Sep 07 |
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261 |
return b.getShort(); |
11 |
13 Sep 07 |
nicklas |
262 |
} |
11 |
13 Sep 07 |
nicklas |
263 |
|
11 |
13 Sep 07 |
nicklas |
/** Reads the next short from the buffer. |
11 |
13 Sep 07 |
nicklas |
* @param buffer The buffered reader. |
11 |
13 Sep 07 |
nicklas |
* @param offset The offset to the file. |
11 |
13 Sep 07 |
nicklas |
* @return The next short value. |
11 |
13 Sep 07 |
nicklas |
268 |
*/ |
11 |
13 Sep 07 |
nicklas |
269 |
public static short MmGetInt16_I(MappedByteBuffer buffer, int offset) { |
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13 Sep 07 |
nicklas |
270 |
ByteBuffer b = (ByteBuffer)buffer.position(offset); |
11 |
13 Sep 07 |
nicklas |
271 |
return b.getShort(); |
11 |
13 Sep 07 |
nicklas |
272 |
} |
11 |
13 Sep 07 |
nicklas |
273 |
|
11 |
13 Sep 07 |
nicklas |
/** Reads the next byte from the buffer. |
11 |
13 Sep 07 |
nicklas |
* @param buffer The buffered reader. |
11 |
13 Sep 07 |
nicklas |
* @param offset The offset to the file. |
11 |
13 Sep 07 |
nicklas |
* @return The next byte value. |
11 |
13 Sep 07 |
nicklas |
278 |
*/ |
11 |
13 Sep 07 |
nicklas |
279 |
public static byte MmGetUInt8(MappedByteBuffer buffer, int offset) { |
11 |
13 Sep 07 |
nicklas |
280 |
ByteBuffer b = (ByteBuffer)buffer.position(offset); |
11 |
13 Sep 07 |
nicklas |
281 |
return b.get(); |
11 |
13 Sep 07 |
nicklas |
282 |
} |
11 |
13 Sep 07 |
nicklas |
283 |
|
11 |
13 Sep 07 |
nicklas |
/** Reads the next byte from the buffer. |
11 |
13 Sep 07 |
nicklas |
* @param buffer The buffered reader. |
11 |
13 Sep 07 |
nicklas |
* @param offset The offset to the file. |
11 |
13 Sep 07 |
nicklas |
* @return The next byte value. |
11 |
13 Sep 07 |
nicklas |
288 |
*/ |
11 |
13 Sep 07 |
nicklas |
289 |
public static byte MmGetInt8(MappedByteBuffer buffer, int offset) { |
11 |
13 Sep 07 |
nicklas |
290 |
ByteBuffer b = (ByteBuffer)buffer.position(offset); |
11 |
13 Sep 07 |
nicklas |
291 |
return b.get(); |
11 |
13 Sep 07 |
nicklas |
292 |
} |
11 |
13 Sep 07 |
nicklas |
293 |
|
11 |
13 Sep 07 |
nicklas |
/** Read a string of fixed length. |
11 |
13 Sep 07 |
nicklas |
* @param buffer The buffered reader. |
11 |
13 Sep 07 |
nicklas |
* @param offset The offset to the file. |
11 |
13 Sep 07 |
nicklas |
* @param len The string length. |
11 |
13 Sep 07 |
nicklas |
* @return The string. |
11 |
13 Sep 07 |
nicklas |
299 |
*/ |
11 |
13 Sep 07 |
nicklas |
300 |
public static String MmGetFixedString_I(MappedByteBuffer buffer, int offset, int len) { |
11 |
13 Sep 07 |
nicklas |
301 |
try |
11 |
13 Sep 07 |
nicklas |
302 |
{ |
11 |
13 Sep 07 |
nicklas |
303 |
String str = ""; |
11 |
13 Sep 07 |
nicklas |
304 |
byte bvalue; |
11 |
13 Sep 07 |
nicklas |
305 |
ByteBuffer b = (ByteBuffer)buffer.position(offset); |
11 |
13 Sep 07 |
nicklas |
306 |
for (int i=0; i<len; i++) |
11 |
13 Sep 07 |
nicklas |
307 |
{ |
11 |
13 Sep 07 |
nicklas |
308 |
bvalue = b.get(); |
11 |
13 Sep 07 |
nicklas |
309 |
if (bvalue == 0) |
11 |
13 Sep 07 |
nicklas |
310 |
break; |
11 |
13 Sep 07 |
nicklas |
311 |
str += (char) bvalue; |
11 |
13 Sep 07 |
nicklas |
312 |
} |
11 |
13 Sep 07 |
nicklas |
313 |
return str; |
11 |
13 Sep 07 |
nicklas |
314 |
} |
11 |
13 Sep 07 |
nicklas |
315 |
catch (Throwable t) |
11 |
13 Sep 07 |
nicklas |
316 |
{ |
11 |
13 Sep 07 |
nicklas |
317 |
return ""; |
11 |
13 Sep 07 |
nicklas |
318 |
} |
11 |
13 Sep 07 |
nicklas |
319 |
} |
14 |
14 Sep 07 |
nicklas |
320 |
|
14 |
14 Sep 07 |
nicklas |
321 |
/** |
14 |
14 Sep 07 |
nicklas |
* Copy data from one stream to another. |
14 |
14 Sep 07 |
nicklas |
* @param in The stream to read from |
14 |
14 Sep 07 |
nicklas |
* @param out The stream to write to |
14 |
14 Sep 07 |
nicklas |
* @return The number of bytes copied |
14 |
14 Sep 07 |
nicklas |
* @throws IOException If there is an IO error |
14 |
14 Sep 07 |
nicklas |
327 |
*/ |
14 |
14 Sep 07 |
nicklas |
328 |
public static long copy(InputStream in, OutputStream out) |
14 |
14 Sep 07 |
nicklas |
329 |
throws IOException |
14 |
14 Sep 07 |
nicklas |
330 |
{ |
14 |
14 Sep 07 |
nicklas |
331 |
int bytes = 0; |
14 |
14 Sep 07 |
nicklas |
332 |
long totalBytes = 0; |
14 |
14 Sep 07 |
nicklas |
333 |
byte[] buffer = new byte[1024]; |
14 |
14 Sep 07 |
nicklas |
334 |
|
14 |
14 Sep 07 |
nicklas |
335 |
while (bytes != -1) // -1 = end of stream |
14 |
14 Sep 07 |
nicklas |
336 |
{ |
14 |
14 Sep 07 |
nicklas |
337 |
bytes = in.read(buffer, 0, buffer.length); |
14 |
14 Sep 07 |
nicklas |
338 |
if (bytes > 0) |
14 |
14 Sep 07 |
nicklas |
339 |
{ |
14 |
14 Sep 07 |
nicklas |
340 |
totalBytes += bytes; |
14 |
14 Sep 07 |
nicklas |
341 |
out.write(buffer, 0, bytes); |
14 |
14 Sep 07 |
nicklas |
342 |
} |
14 |
14 Sep 07 |
nicklas |
343 |
} |
14 |
14 Sep 07 |
nicklas |
344 |
return totalBytes; |
11 |
13 Sep 07 |
nicklas |
345 |
} |
14 |
14 Sep 07 |
nicklas |
346 |
} |