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Java > Open Source Codes > org > apache > batik > apps > rasterizer > SVGConverterURLSource


1 /*
2
3    Copyright 1999-2003 The Apache Software Foundation
4
5    Licensed under the Apache License, Version 2.0 (the "License");
6    you may not use this file except in compliance with the License.
7    You may obtain a copy of the License at
8
9        http://www.apache.org/licenses/LICENSE-2.0
10
11    Unless required by applicable law or agreed to in writing, software
12    distributed under the License is distributed on an "AS IS" BASIS,
13    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14    See the License for the specific language governing permissions and
15    limitations under the License.
16
17 */
18
19 package org.apache.batik.apps.rasterizer;
20
21 import java.io.IOException JavaDoc;
22 import java.io.InputStream JavaDoc;
23
24 import org.apache.batik.util.ParsedURL;
25
26 /*
27  * @author <a HREF="mailto:vhardy@apache.org">Vincent Hardy</a>
28  * @version $Id: SVGConverterURLSource.java,v 1.6 2004/10/30 18:38:04 deweese Exp $
29  */
30 public class SVGConverterURLSource implements SVGConverterSource {
31     /**
32      * SVG file extension
33      */
34     protected static final String JavaDoc SVG_EXTENSION = ".svg";
35     protected static final String JavaDoc SVGZ_EXTENSION = ".svgz";
36
37     //
38 // Reported when the URL for one of the sources is
39 // invalid. This will happen if the URL is malformed or
40 // if the URL file does not end with the ".svg" extension.
41 // This is needed to be able to create a file name for
42 // the ouptut automatically.
43 //
44 public static final String JavaDoc ERROR_INVALID_URL
45         = "SVGConverterURLSource.error.invalid.url";
46
47     ParsedURL purl;
48     String JavaDoc name;
49
50     public SVGConverterURLSource(String JavaDoc url) throws SVGConverterException{
51         this.purl = new ParsedURL(url);
52
53         // Get the path portion
54 String JavaDoc path = this.purl.getPath();
55         if (path == null ||
56             !(path.toLowerCase().endsWith(SVG_EXTENSION) ||
57               path.toLowerCase().endsWith(SVGZ_EXTENSION))){
58             throw new SVGConverterException(ERROR_INVALID_URL,
59                                             new Object JavaDoc[]{url});
60         }
61
62         int n = path.lastIndexOf("/");
63         if (n != -1){
64             // The following is safe because we know there is at least ".svg"
65 // after the slash.
66 path = path.substring(n+1);
67         }
68             
69         name = path;
70
71         //
72 // The following will force creation of different output file names
73 // for urls with references (e.g., anne.svg#svgView(viewBox(0,0,4,5)))
74 //
75 String JavaDoc ref = this.purl.getRef();
76         if (ref != null && (ref.length()!=0)) {
77             name += "" + ref.hashCode();
78         }
79     }
80
81     public String JavaDoc toString(){
82         return purl.toString();
83     }
84
85     public String JavaDoc getURI(){
86         return toString();
87     }
88
89     public boolean equals(Object JavaDoc o){
90         if (o == null || !(o instanceof SVGConverterURLSource)){
91             return false;
92         }
93
94         return purl.equals(((SVGConverterURLSource)o).purl);
95     }
96
97     public InputStream JavaDoc openStream() throws IOException JavaDoc {
98         return purl.openStream();
99     }
100
101     public boolean isSameAs(String JavaDoc srcStr){
102         return toString().equals(srcStr);
103     }
104
105     public boolean isReadable(){
106         return true;
107     }
108
109     public String JavaDoc getName(){
110         return name;
111     }
112 }
113
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