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Made some changes for HDF types

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git-svn-id: https://svn.apache.org/repos/asf/jakarta/poi/trunk@352453 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Said Ryan Ackley 2002-04-19 22:30:50 +00:00
parent f66f109772
commit 6fe733d9b5
2 changed files with 48 additions and 5 deletions
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18
src/java/org/apache/poi/util/HexDump.java
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@ -183,6 +183,24 @@ public class HexDump
return _cbuffer;
}
/**
* Converts the parameter to a hex value.
*
* @param value The value to convert
* @return A String representing the array of bytes
*/
public static String toHex(final byte[] value)
{
StringBuffer retVal = new StringBuffer();
retVal.append('[');
for(int x = 0; x < value.length; x++)
{
retVal.append(toHex(value[x]));
retVal.append(", ");
}
retVal.append(']');
return retVal.toString();
}
/**
* Converts the parameter to a hex value.
*

35
src/java/org/apache/poi/util/LittleEndian.java
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@ -94,6 +94,18 @@ public class LittleEndian
return (short) getNumber(data, offset, SHORT_SIZE);
}
/**
* get a short array from a byte array.
*/
public static short[] getSimpleShortArray(final byte[] data, final int offset, final int size)
{
short[] results = new short[size];
for (int i = 0; i < size; i++)
{
results[i] = getShort(data, offset + 2 + (i * 2));
}
return results;
}
/**
* get a short array from a byte array. The short array is assumed
* to start with a word describing the length of the array.
@ -101,11 +113,7 @@ public class LittleEndian
public static short[] getShortArray(final byte[] data, final int offset)
{
int size = (short) getNumber(data, offset, SHORT_SIZE);
short[] results = new short[size];
for (int i = 0; i < size; i++)
{
results[i] = getShort(data, offset + 2 + (i * 2));
}
short[] results = getSimpleShortArray(data, offset, size);
return results;
}
@ -566,5 +574,22 @@ public class LittleEndian
{
return getUnsignedByte(data, 0);
}
/**
* Copy a portion of a byte array
*
* @param data the original byte array
* @param offset Where to start copying from.
* @param size Number of bytes to copy.
*
* @throws IndexOutOfBoundsException - if copying would cause access of data
* outside array bounds.
*/
public static byte[] getByteArray(final byte[] data, int offset, int size)
{
byte[] copy = new byte[size];
System.arraycopy(data, offset, copy, 0, size);
return copy;
}
}