Source Code Cross Referenced for Resource.java in  » Portal » Open-Portal » com » sun » portal » desktop » util » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Portal » Open Portal » com.sun.portal.desktop.util 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


01:        package com.sun.portal.desktop.util;
02:
03:        import java.io.*;
04:        import java.net.URL;
05:
06:        /**
07:         * $Id: Resource.java
08:         * Copyright 2002 Sun Microsystems, Inc. All
09:         * rights reserved. Use of this product is subject
10:         * to license terms. Federal Acquisitions:
11:         * Commercial Software -- Government Users
12:         * Subject to Standard License Terms and
13:         * Conditions.
14:         *
15:         * Sun, Sun Microsystems, the Sun logo, and Sun ONE
16:         * are trademarks or registered trademarks of Sun Microsystems,
17:         * Inc. in the United States and other countries.
18:         */
19:        /**
20:         * This class provides generic methods to locate a file and  return  its contents .
21:         */
22:        public final class Resource {
23:            public static String read(final String aFileName) {
24:                try {
25:                    String data = "";
26:                    InputStream in = getInputStream(Resource.class, aFileName);
27:                    data = read(new InputStreamReader(in));
28:                    in.close();
29:                    return data;
30:                } catch (Exception e) {
31:                    return "";
32:                }
33:            }
34:
35:            public static InputStream getInputStream(Class aClass,
36:                    final String aResourceLocation) throws IOException {
37:
38:                InputStream in = aClass.getResourceAsStream(aResourceLocation);
39:                //may be absoulte file path is given
40:                if (in == null) {
41:                    try {
42:                        //works well if the user has given absolute path
43:                        in = new FileInputStream(aResourceLocation);
44:                    } catch (FileNotFoundException e) {
45:                        //works well if the user has given the relative path to the
46:                        //location of class file
47:                        String directoryURL = aClass.getProtectionDomain()
48:                                .getCodeSource().getLocation().toString();
49:                        String fileURL = directoryURL + aResourceLocation;
50:                        URL url = new URL(fileURL);
51:                        in = url.openStream();
52:                    }
53:                }
54:
55:                if (in != null) {
56:                    return in;
57:                } else {
58:                    throw new FileNotFoundException("Resource Name: "
59:                            + aResourceLocation);
60:                }
61:            }
62:
63:            public static String read(final Reader aReader) throws IOException {
64:                String lResult = "";
65:                try {
66:                    BufferedReader buffReader;
67:                    if (aReader instanceof  BufferedReader) {
68:                        buffReader = (BufferedReader) aReader;
69:                    } else {
70:                        buffReader = new BufferedReader(aReader);
71:                    }
72:
73:                    lResult = read(buffReader);
74:                    aReader.close();
75:                } catch (IOException e) {
76:                    throw e;
77:                }
78:                return lResult;
79:            }
80:
81:            private static final String read(final BufferedReader aReader)
82:                    throws IOException {
83:                StringBuffer sb = new StringBuffer();
84:                char[] data = new char[2048];
85:                int count = 0;
86:
87:                while ((count = aReader.read(data)) != -1) {
88:                    sb.append(data, 0, count);
89:                }
90:
91:                aReader.close();
92:                return sb.toString();
93:            }
94:        }
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