|
1
12 package org.openbravo.utils;
13
14 import java.io.*;
15 import org.apache.log4j.Logger;
16
17
21 public class FileUtility {
22 private String  dir;
23 private String filename;
24 static Logger log4j = Logger.getLogger(FileUtility.class);
25
26 public FileUtility() {
27 }
28
29 public FileUtility(String path, String name) throws IOException {
30 this(path, name, true);
31 }
32
33 public FileUtility(String path, String name, boolean newFile) throws IOException {
34 if (path == null || path.equals("")) throw new IllegalArgumentException ("directory cannot be null");
35 if (name == null || name.equals("")) throw new IllegalArgumentException ("file name cannot be null");
36
37 File fpath = new File(path);
38 if(!fpath.isDirectory())
39 throw new IllegalArgumentException ("Not a directory: " + path);
40 if(!fpath.canWrite())
41 throw new IllegalArgumentException ("Not writable: " + path);
42
43 if (newFile) {
44 File file = new File(path, name);
45 if (file.canRead()) throw new IllegalArgumentException ("file: " + path + "\\" + name + " allready exists");
46 }
47
48 dir = path;
49 filename = name;
50 }
51
52 public boolean ByteArrayToFile(ByteArrayOutputStream in) throws IOException {
53 if (in==null) return false;
54 File f = new File(dir, filename);
55 FileOutputStream fos = new FileOutputStream(f);
56 in.writeTo(fos);
57 fos.close();
58 return true;
59 }
60
61 public boolean StringToFile(String in) throws IOException {
62 if (in==null) return false;
63 File f = new File(dir, filename);
64 FileWriter fileWriterData = new FileWriter(f);
65 PrintWriter printWriterData = new PrintWriter(fileWriterData);
66 printWriterData.print(in);
67 printWriterData.close();
68 fileWriterData.close();
69 return true;
70 }
71
72 public void dumpFile(OutputStream outputstream) {
73 byte abyte0[] = new byte[4096];
74 try {
75 BufferedInputStream bufferedinputstream = new BufferedInputStream(new FileInputStream(new File(dir, filename)));
76 int i;
77 while((i = bufferedinputstream.read(abyte0, 0, 4096)) != -1)
78 outputstream.write(abyte0, 0, i);
79 bufferedinputstream.close();
80 }
81 catch(Exception exception) { }
82 }
83
84 public boolean deleteFile() throws IOException {
85 File f = new File(dir, filename);
86 return f.delete();
87 }
88
89 public int copy(File source, File destiny, DirFilter dirFilter, boolean discardHidden, boolean overwrite) throws Exception {
90 File[] list;
91 int total = 0;
92 if(dirFilter!=null) list = source.listFiles(dirFilter);
93 else list = source.listFiles();
94 for(int i = 0; i < list.length; i++) {
95 File fileItem = list[i];
96 if (fileItem.isDirectory()) {
97 if (!discardHidden || !fileItem.isHidden()) {
98 File faux = new File(destiny, fileItem.getName());
99 faux.mkdir();
100 total += copy(fileItem, faux, dirFilter, discardHidden, overwrite);
102 }
103 } else {
104 File fileAux = new File(destiny, fileItem.getName());
105 if (overwrite || !fileAux.exists() || fileItem.lastModified()>fileAux.lastModified()) {
106 copyFile(fileItem, fileAux);
107 total++;
108 }
109 }
110 }
111 return total;
112 }
113
114 public void copyFile(File in, File out) throws Exception {
115 BufferedReader fileBuffer = new BufferedReader(new FileReader(in));
117 FileOutputStream fos = new FileOutputStream(out);
118 OutputStreamWriter printWriterData = new OutputStreamWriter(fos, "UTF-8");
119 String nextLine = fileBuffer.readLine();
120 while (nextLine != null) {
121 printWriterData.write(nextLine);
122 printWriterData.write("\n");
123 nextLine = fileBuffer.readLine();
124 }
125 printWriterData.flush();
126 fos.close();
127 fileBuffer.close();
128
133 }
134
135 public void delete(File source) throws Exception {
136 File[] list = source.listFiles();
137 for(int i = 0; i < list.length; i++) {
138 File fileItem = list[i];
139 if (fileItem.isDirectory()) {
140 delete(fileItem);
141 }
142 fileItem.delete();
143 }
144 }
145 }
146 |
Popular Tags |
Java API By Example, From Geeks To Geeks.