1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
|
/*
FileURLConnection.java -- URLConnection class for "file" protocol
Copyright (C) 1998 Free Software Foundation, Inc.
This file is part of GNU Classpath.
GNU Classpath is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU Classpath is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU Classpath; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA.
Linking this library statically or dynamically with other modules is
making a combined work based on this library. Thus, the terms and
conditions of the GNU General Public License cover the whole
combination.
As a special exception, the copyright holders of this library give you
permission to link this library with independent modules to produce an
executable, regardless of the license terms of these independent
modules, and to copy and distribute the resulting executable under
terms of your choice, provided that you also meet, for each linked
independent module, the terms and conditions of the license of that
module. An independent module is a module which is not derived from
or based on this library. If you modify this library, you may extend
this exception to your version of the library, but you are not
obligated to do so. If you do not wish to do so, delete this
exception statement from your version.
*/
package gnu.java.net.protocol.file;
/**
* This subclass of java.net.URLConnection models a URLConnection via
* the "file" protocol.
*
* @author Aaron M. Renn (arenn@urbanophile.com)
*/
public class FileURLConnection extends java.net.URLConnection
{
/**
* This is a File object for this connection
*/
private java.io.File file;
/**
* InputStream if we are reading from the file
*/
private java.io.FileInputStream in_stream;
/**
* OutputStream if we are writing to the file
*/
private java.io.FileOutputStream out_stream;
/**
* Calls superclass constructor to initialize.
*/
protected FileURLConnection(java.net.URL url)
{
super(url);
/* Set up some variables */
doOutput = false;
}
/*************************************************************************/
/*
* Instance Methods
*/
/**
* "Connects" to the file by opening it.
*/
public void connect() throws java.io.IOException
{
if(connected)return;
file = new java.io.File(getURL().getFile());
if(!file.exists())
throw new java.io.FileNotFoundException(file.getPath());
connected = true;
}
/**
* Opens the file for reading and returns a stream for it.
*
* @return An InputStream for this connection.
*
* @exception IOException If an error occurs
*/
public java.io.InputStream getInputStream ()
throws java.io.IOException
{
if (!connected)
connect();
in_stream = new java.io.FileInputStream(file);
return(in_stream);
}
/**
* Opens the file for writing and returns a stream for it.
*
* @return An OutputStream for this connection.
*
* @exception IOException If an error occurs.
*/
public java.io.OutputStream getOutputStream ()
throws java.io.IOException
{
if (!connected)
connect();
out_stream = new java.io.FileOutputStream(file);
return(out_stream);
}
} // class FileURLConnection
|
