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25 package org.jrobin.mrtg.client;
26
27 import org.jrobin.mrtg.MrtgException;
28
29 import javax.swing.*;
30 import java.awt.*;
31 import java.io.BufferedInputStream  ;
32 import java.io.ByteArrayOutputStream ;
33 import java.io.FileInputStream ;
34 import java.io.IOException ;
35 import java.util.Enumeration ;
36 import java.util.Hashtable ;
37 import java.util.zip.ZipEntry ;
38 import java.util.zip.ZipFile ;
39 import java.util.zip.ZipInputStream ;
40
41 class Resources {
42 private static boolean runningFromJar() {
43 String className = Resources.class.getName().replace('.', '/');
44 String classJar = Util.class.getResource("/" + className + ".class").toString();
45 return classJar.startsWith("jar:");
46 }
47
48 private static String getJarPath() {
49 if (runningFromJar()) {
50 return System.getProperty("java.class.path");
51 }
52 return null;
53 }
54
55 static byte[] getResource(String path) throws MrtgException {
56 try {
57 if (runningFromJar()) {
58 String jarPath = getJarPath();
60 JarResources jarResources = new JarResources(jarPath);
61 return jarResources.getResource(path);
62 } else {
63 ByteArrayOutputStream outStream = new ByteArrayOutputStream ();
64 FileInputStream inStream = new FileInputStream (path);
65 int b;
66 while((b = inStream.read()) != -1) {
67 outStream.write(b);
68 }
69 byte[] resource = outStream.toByteArray();
70 inStream.close();
71 outStream.close();
72 return resource;
73 }
74 } catch (IOException e) {
75 throw new MrtgException(e);
76 }
77 }
78
79 static String getString(String path) throws MrtgException {
80 byte[] stringBytes = getResource(path);
81 return new String (stringBytes);
82 }
83
84 static ImageIcon getImageIcon(String path) throws MrtgException {
85 byte[] imageBytes = getResource(path);
86 return new ImageIcon(imageBytes);
87 }
88
89 static Image getImage(String path) throws MrtgException {
90 ImageIcon imageIcon = getImageIcon(path);
91 return imageIcon.getImage();
92 }
93 }
94
95 class JarResources {
96
97 private Hashtable htSizes = new Hashtable ();
99 private Hashtable htJarContents = new Hashtable ();
100
101 private String jarFileName;
103
104 JarResources(String jarFileName) throws IOException {
105 this.jarFileName = jarFileName;
106 init();
107 }
108
109 byte[] getResource(String name) {
110 return (byte[]) htJarContents.get(name);
111 }
112
113 private void init() throws IOException {
114 ZipFile zf = new ZipFile (jarFileName);
116 Enumeration e = zf.entries();
117 while (e.hasMoreElements()) {
118 ZipEntry ze = (ZipEntry ) e.nextElement();
119 htSizes.put(ze.getName(), new Integer ((int) ze.getSize()));
120 }
121 zf.close();
122 FileInputStream fis = new FileInputStream (jarFileName);
124 BufferedInputStream bis = new BufferedInputStream (fis);
125 ZipInputStream zis = new ZipInputStream (bis);
126 ZipEntry ze = null;
127 while ((ze = zis.getNextEntry()) != null) {
128 if (ze.isDirectory()) {
129 continue;
130 }
131 int size = (int) ze.getSize();
132 if (size == -1) {
134 size = ((Integer ) htSizes.get(ze.getName())).intValue();
135 }
136 byte[] b = new byte[size];
137 int rb = 0;
138 int chunk = 0;
139 while (size - rb > 0) {
140 chunk = zis.read(b, rb, size - rb);
141 if (chunk == -1) {
142 break;
143 }
144 rb += chunk;
145 }
146 htJarContents.put(ze.getName(), b);
148 }
149 }
150
151 }
152
153 |
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