Add Offset and Length to ByteArrayEntity
----------------------------------------
Key: HTTPCORE-258
URL: https://issues.apache.org/jira/browse/HTTPCORE-258
Project: HttpComponents HttpCore
Issue Type: Improvement
Components: HttpCore, HttpCore NIO
Environment: N/A
Reporter: William R. Speirs
Priority: Trivial
Currently the ByteArrayEntity only has a single constructor which will only
accept a byte[]. I suggest this class be extended to handle an additional
constructor which takes an offset and length. I have created the following
first draft of a patch to the ByteArrayEntity class. Additional changes will
need to be made to the test cases and the NByteArrayEntity class as well.
--- httpcore/src/main/java/org/apache/http/entity/ByteArrayEntity.java
(revision 1130603)
+++ httpcore/src/main/java/org/apache/http/entity/ByteArrayEntity.java
(working copy)
@@ -40,6 +40,7 @@
public class ByteArrayEntity extends AbstractHttpEntity implements Cloneable {
protected final byte[] content;
+ protected int off, len;
public ByteArrayEntity(final byte[] b) {
super();
@@ -47,25 +48,43 @@
throw new IllegalArgumentException("Source byte array may not be
null");
}
this.content = b;
+ this.off = 0;
+ this.len = this.content.length;
}
+ public ByteArrayEntity(final byte[] b, int off, int len) {
+ super();
+ if (b == null) {
+ throw new IllegalArgumentException("Source byte array may not be
null");
+ }
+ if (off < 0) {
+ throw new IllegalArgumentException("Offset cannot be negative");
+ }
+ if(b.length - off >= len) {
+ throw new IllegalArgumentException("Length cannot be longer than
byte array");
+ }
+ this.content = b;
+ this.off = off;
+ this.len = len;
+ }
+
public boolean isRepeatable() {
return true;
}
public long getContentLength() {
- return this.content.length;
+ return this.len - this.off;
}
public InputStream getContent() {
- return new ByteArrayInputStream(this.content);
+ return new ByteArrayInputStream(this.content, this.off, this.len);
}
public void writeTo(final OutputStream outstream) throws IOException {
if (outstream == null) {
throw new IllegalArgumentException("Output stream may not be
null");
}
- outstream.write(this.content);
+ outstream.write(this.content, this.off, this.len);
outstream.flush();
}
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