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1
6 package fr.jayasoft.ivy.util;
7
8 import java.io.BufferedReader  ;
9 import java.io.File ;
10 import java.io.FileInputStream ;
11 import java.io.FileOutputStream ;
12 import java.io.IOException ;
13 import java.io.InputStream ;
14 import java.io.OutputStream ;
15 import java.net.URL ;
16 import java.util.ArrayList ;
17 import java.util.Collection ;
18 import java.util.Collections ;
19 import java.util.List ;
20
21 import fr.jayasoft.ivy.url.URLHandlerRegistry;
22
23
27 public class FileUtil {
28 private static final int BUFFER_SIZE = 8 * 1024;
31 public static void copy(File src, File dest, CopyProgressListener l) throws IOException {
32 copy(src, dest, l, false);
33 }
34 public static void copy(File src, File dest, CopyProgressListener l, boolean overwrite) throws IOException {
35 if (dest.exists()) {
36 if (!dest.isFile()) {
37 throw new IOException ("impossible to copy: destination is not a file: "+dest);
38 }
39 if (overwrite) {
40 if (!dest.canWrite()) {
41 dest.delete();
42 } } else {
44 Message.verbose(dest+" already exists, nothing done");
45 }
46 }
47 copy(new FileInputStream (src), dest, l);
48 long srcLen = src.length();
49 long destLen = dest.length();
50 if (srcLen != destLen) {
51 dest.delete();
52 throw new IOException ("size of source file " + src.toString() + "("
53 + srcLen + ") differs from size of dest file " + dest.toString()
54 + "(" + destLen + ") - please retry");
55 }
56 dest.setLastModified(src.lastModified());
57 }
58
59 public static void copy(URL src, File dest, CopyProgressListener l) throws IOException {
60 URLHandlerRegistry.getDefault().download(src, dest, l);
61 }
62
63 public static void copy(InputStream src, File dest, CopyProgressListener l) throws IOException {
64 if (dest.getParentFile() != null) {
65 dest.getParentFile().mkdirs();
66 }
67 copy(src, new FileOutputStream (dest), l);
68 }
69
70 public static void copy(InputStream src, OutputStream dest, CopyProgressListener l) throws IOException {
71 try {
72 CopyProgressEvent evt = null;
73 if (l != null) {
74 evt = new CopyProgressEvent();
75 }
76 byte buffer[]=new byte[BUFFER_SIZE];
77 int c;
78 long total = 0;
79
80 if (l != null) {
81 l.start(evt);
82 }
83 while( (c = src.read(buffer)) != -1 ) {
84 if (Thread.currentThread().isInterrupted()) {
85 throw new IOException ("transfer interrupted");
86 }
87 dest.write(buffer, 0, c);
88 total += c;
89 if (l != null) {
90 l.progress(evt.update(buffer, c, total));
91 }
92 }
93 if (l != null) {
94 l.end(evt.update(buffer, 0, total));
95 }
96 } finally {
97 try {
98 src.close();
99 } catch (IOException ex) {
100 dest.close();
101 throw ex;
102 }
103 dest.close();
104 }
105 }
106
107 public static String readEntirely(BufferedReader in) throws IOException {
108 StringBuffer buf = new StringBuffer ();
109
110 String line = in.readLine();
111 while (line != null) {
112 buf.append(line + "\n");
113 line = in.readLine();
114 }
115 in.close();
116 return buf.toString();
117 }
118
119 public static String concat(String dir, String file) {
120 return dir+"/"+file;
121 }
122
123 public static void forceDelete(File f) {
124 if (f.isDirectory()) {
125 File [] sub = f.listFiles();
126 for (int i = 0; i < sub.length; i++) {
127 forceDelete(sub[i]);
128 }
129 }
130 f.delete();
131 }
132
143 public static List getPathFiles(File root, File file) {
144 List ret = new ArrayList ();
145 while (file != null && !file.getAbsolutePath().equals(root.getAbsolutePath())) {
146 ret.add(file);
147 file = file.getParentFile();
148 }
149 if (root != null) {
150 ret.add(root);
151 }
152 Collections.reverse(ret);
153 return ret;
154 }
155
161 public static Collection listAll(File dir) {
162 return listAll(dir, new ArrayList ());
163 }
164 private static Collection listAll(File file, Collection list) {
165 if (file.exists()) {
166 list.add(file);
167 }
168 if (file.isDirectory()) {
169 File [] files = file.listFiles();
170 for (int i = 0; i < files.length; i++) {
171 listAll(files[i], list);
172 }
173 }
174 return list;
175 }
176
177 }
178 |
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