Crossfire JXClient, Trunk
build
windows-installer
unpacked
java-se-8u41-ri
sample
nio
server
FileContent.java
Go to the documentation of this file.
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/*
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* Copyright (c) 2004, 2011, Oracle and/or its affiliates. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* - Neither the name of Oracle nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* This source code is provided to illustrate the usage of a given feature
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* or technique and has been deliberately simplified. Additional steps
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* required for a production-quality application, such as security checks,
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* input validation and proper error handling, might not be present in
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* this sample code.
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*/
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import
java.io.*;
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import
java.net.*;
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import
java.nio.channels.*;
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import
java.nio.charset.*;
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class
FileContent
implements
Content
{
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private
static
File
ROOT
=
new
File(
"root"
);
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private
File
fn
;
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FileContent
(URI
uri
) {
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fn
=
new
File(
ROOT
,
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uri
.getPath()
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.replace(
'/'
,
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File.separatorChar));
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}
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private
String
type
=
null
;
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public
String
type
() {
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if
(
type
!=
null
)
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return
type
;
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String nm =
fn
.getName();
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if
(nm.endsWith(
".html"
))
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type
=
"text/html; charset=iso-8859-1"
;
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else
if
((nm.indexOf(
'.'
) < 0) || nm.endsWith(
".txt"
))
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type
=
"text/plain; charset=iso-8859-1"
;
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else
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type
=
"application/octet-stream"
;
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return
type
;
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}
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private
FileChannel
fc
=
null
;
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private
long
length
= -1;
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private
long
position
= -1;
// NB only; >= 0 if transferring
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public
long
length
() {
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return
length
;
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}
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public
void
prepare
() throws IOException {
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if
(
fc
==
null
)
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fc
=
new
RandomAccessFile(
fn
,
"r"
).getChannel();
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length
=
fc
.size();
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position
= 0;
// NB only
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}
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public
boolean
send
(
ChannelIO
cio)
throws
IOException {
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if
(
fc
==
null
)
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throw
new
IllegalStateException();
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if
(
position
< 0)
// NB only
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throw
new
IllegalStateException();
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/*
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* Short-circuit if we're already done.
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*/
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if
(
position
>=
length
) {
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return
false
;
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}
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position
+= cio.transferTo(
fc
,
position
,
length
-
position
);
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return
(
position
<
length
);
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}
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public
void
release
() throws IOException {
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if
(
fc
!=
null
) {
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fc
.close();
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fc
=
null
;
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}
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}
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}
FileContent.type
String type
Definition:
FileContent.java:65
FileContent.FileContent
FileContent(URI uri)
Definition:
FileContent.java:58
FileContent.fc
FileChannel fc
Definition:
FileContent.java:80
uri
URI uri
Definition:
README.txt:15
FileContent.length
long length()
Definition:
FileContent.java:84
FileContent.fn
File fn
Definition:
FileContent.java:56
FileContent
Definition:
FileContent.java:52
FileContent.type
String type()
Definition:
FileContent.java:67
FileContent.position
long position
Definition:
FileContent.java:82
Content
Definition:
Content.java:49
FileContent.ROOT
static File ROOT
Definition:
FileContent.java:54
FileContent.send
boolean send(ChannelIO cio)
Definition:
FileContent.java:95
FileContent.release
void release()
Definition:
FileContent.java:112
ChannelIO
Definition:
ChannelIO.java:56
FileContent.prepare
void prepare()
Definition:
FileContent.java:88
FileContent.length
long length
Definition:
FileContent.java:81
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