* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
- *
+ *
* http://www.apache.org/licenses/LICENSE-2.0
- *
+ *
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
/**
* BufferedServletInputStream
- *
+ *
* There are cases in brain-dead middleware (SOAP) where they store routing information in the content.
- *
+ *
* In HTTP, this requires reading the content from the InputStream which, of course, cannot be re-read.
- *
- * BufferedInputStream exists to implement the "Mark" protocols for Streaming, which will enable being
+ *
+ * BufferedInputStream exists to implement the "Mark" protocols for Streaming, which will enable being
* re-read. Unfortunately, J2EE chose to require a "ServletInputStream" as an abstract class, rather than
- * an interface, which requires we create a delegating pattern, rather than the preferred inheriting pattern.
- *
+ * an interface, which requires we create a delegating pattern, rather than the preferred inheriting pattern.
+ *
* Unfortunately, the standard "BufferedInputStream" cannot be used, because it simply creates a byte array
- * in the "mark(int)" method of that size. This is not appropriate for this application, because the Header
- * can be potentially huge, and if a buffer was allocated to accommodate all possibilities, the cost of memory
+ * in the "mark(int)" method of that size. This is not appropriate for this application, because the Header
+ * can be potentially huge, and if a buffer was allocated to accommodate all possibilities, the cost of memory
* allocation would be too large for high performance transactions.
*
- *
+ *
* @author Jonathan
*
*/
private static final int NONE = 0;
private static final int STORE = 1;
private static final int READ = 2;
-
+
private InputStream is;
private int state = NONE;
private Capacitor capacitor;
public int read() throws IOException {
int value=-1;
- if(capacitor==null) {
+ if (capacitor==null) {
value=is.read();
} else {
switch(state) {
case STORE:
value = is.read();
- if(value>=0) {
+ if (value>=0) {
capacitor.put((byte)value);
}
break;
case READ:
value = capacitor.read();
- if(value<0) {
+ if (value<0) {
capacitor.done();
capacitor=null; // all done with buffer
value = is.read();
}
}
- }
+ }
return value;
}
-
+ @Override
public int read(byte[] b) throws IOException {
return read(b,0,b.length);
}
-
-
+
+ @Override
public int read(byte[] b, int off, int len) throws IOException {
int count = -1;
- if(capacitor==null) {
+ if (capacitor==null) {
count = is.read(b,off,len);
} else {
switch(state) {
case STORE:
count = is.read(b, off, len);
- if(count>0) {
+ if (count>0) {
capacitor.put(b, off, count);
}
break;
case READ:
count = capacitor.read(b, off, len);
- if(count<=0) {
+ if (count<=0) {
capacitor.done();
capacitor=null; // all done with buffer
}
- if(count<len) {
+ if (count<len) {
int temp = is.read(b, count, len-count);
- if(temp>0) { // watch for -1
+ if (temp>0) { // watch for -1
count+=temp;
- } else if(count<=0) {
- count = temp; // must account for Stream coming back -1
+ } else if (count<=0) {
+ count = temp; // must account for Stream coming back -1
}
}
break;
public long skip(long n) throws IOException {
long skipped = capacitor.skip(n);
- if(skipped<n) {
+ if (skipped<n) {
skipped += is.skip(n-skipped);
}
return skipped;
public int available() throws IOException {
int count = is.available();
- if(capacitor!=null)count+=capacitor.available();
- return count;
+ if (capacitor!=null)count+=capacitor.available();
+ return count;
}
-
+
/**
* Return just amount buffered (for debugging purposes, mostly)
* @return
public void close() throws IOException {
- if(capacitor!=null) {
+ if (capacitor!=null) {
capacitor.done();
capacitor=null;
}
/**
- * Note: Readlimit is ignored in this implementation, because the need was for unknown buffer size which wouldn't
+ * Note: Readlimit is ignored in this implementation, because the need was for unknown buffer size which wouldn't
* require allocating and dumping huge chunks of memory every use, or risk overflow.
*/
public synchronized void mark(int readlimit) {
/**
* Reset Stream
- *
+ *
* Calling this twice is not supported in typical Stream situations, but it is allowed in this service. The caveat is that it can only reset
* the data read in since Mark has been called. The data integrity is only valid if you have not continued to read past what is stored.
- *
+ *
*/
public synchronized void reset() throws IOException {
switch(state) {
case READ:
capacitor.reset();
break;
- case NONE:
+ case NONE:
throw new IOException("InputStream has not been marked");
}
}
Code Review / aaf / authz.git / blobdiff