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Improvements to arg checking in constructor

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git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@723141 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Josh Micich 2008-12-03 23:35:18 +00:00
parent bff86351a1
commit 3a9e4eb667
1 changed files with 9 additions and 1 deletions
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10
src/java/org/apache/poi/util/LittleEndianByteArrayOutputStream.java
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@ -30,9 +30,17 @@ public final class LittleEndianByteArrayOutputStream implements LittleEndianOutp
private int _writeIndex; private int _writeIndex;
public LittleEndianByteArrayOutputStream(byte[] buf, int startOffset, int maxWriteLen) { public LittleEndianByteArrayOutputStream(byte[] buf, int startOffset, int maxWriteLen) {
if (startOffset < 0 || startOffset > buf.length) {
throw new IllegalArgumentException("Specified startOffset (" + startOffset
+ ") is out of allowable range (0.." + buf.length + ")");
}
_buf = buf; _buf = buf;
_writeIndex = startOffset; _writeIndex = startOffset;
_endIndex = startOffset + maxWriteLen; _endIndex = startOffset + maxWriteLen;
if (_endIndex < startOffset || _endIndex > buf.length) {
throw new IllegalArgumentException("calculated end index (" + _endIndex
+ ") is out of allowable range (" + _writeIndex + ".." + buf.length + ")");
}
} }
public LittleEndianByteArrayOutputStream(byte[] buf, int startOffset) { public LittleEndianByteArrayOutputStream(byte[] buf, int startOffset) {
this(buf, startOffset, buf.length - startOffset); this(buf, startOffset, buf.length - startOffset);
@ -91,7 +99,7 @@ public final class LittleEndianByteArrayOutputStream implements LittleEndianOutp
} }
public LittleEndianOutput createDelayedOutput(int size) { public LittleEndianOutput createDelayedOutput(int size) {
checkPosition(size); checkPosition(size);
LittleEndianOutput result = new LittleEndianByteArrayOutputStream(_buf, _writeIndex, _writeIndex+size); LittleEndianOutput result = new LittleEndianByteArrayOutputStream(_buf, _writeIndex, size);
_writeIndex += size; _writeIndex += size;
return result; return result;
} }