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1
30
31 package com.genimen.djeneric.util;
32
33 import java.io.BufferedReader  ;
34 import java.io.BufferedWriter ;
35 import java.io.File ;
36 import java.io.FileInputStream ;
37 import java.io.FileOutputStream ;
38 import java.io.FileReader ;
39 import java.io.FileWriter ;
40 import java.io.IOException ;
41 import java.io.InputStream ;
42 import java.io.InputStreamReader ;
43 import java.io.OutputStream ;
44 import java.io.Reader ;
45
46 public class DjFileUtil
47 {
48
49 public static void writeFile(String filename, String contents) throws IOException
50 {
51 BufferedWriter w = new BufferedWriter (new FileWriter (filename));
52 w.write(contents);
53 w.close();
54 }
55
56 public static void writeFile(String filename, byte[] contents) throws IOException
57 {
58 FileOutputStream fos = new FileOutputStream (new File (filename));
59 fos.write(contents);
60 fos.close();
61 }
62
63 public static String readResource(Class root, String fileName) throws IOException
64 {
65 InputStream is = root.getResourceAsStream(fileName);
66 return readStream(new InputStreamReader (is));
67 }
68
69 public static String readResource(String fileName) throws IOException
70 {
71 InputStream is = Thread.currentThread().getContextClassLoader().getResourceAsStream(fileName);
72 return readStream(new InputStreamReader (is));
73 }
74
75 public static String readFile(String p_filenaam) throws IOException
76 {
77 Reader r = new FileReader (p_filenaam);
78 return readStream(r);
79 }
80
81 public static String readFile(String p_filenaam, String p_charset) throws IOException
82 {
83 InputStream is = new FileInputStream (p_filenaam);
84 Reader r = new InputStreamReader (is, p_charset);
85 return readStream(r);
86 }
87
88 public static String readStream(Reader p_reader) throws IOException
89 {
90 BufferedReader br = new BufferedReader (p_reader);
91 StringBuffer src = new StringBuffer (100);
92 String ln;
93 while ((ln = br.readLine()) != null)
94 {
95 src.append(ln);
96 src.append("\n");
97 }
98 br.close();
99 return src.toString();
100 }
101
102 public static boolean createDirectory(String dir)
103 {
104 try
105 {
106 File fd;
107 if (dir.endsWith("/") || dir.endsWith("\\"))
108 {
109 fd = new File (dir.substring(0, dir.length() - 1));
110 }
111 else
112 {
113 fd = new File (dir);
114 }
115 return fd.mkdirs();
116 }
117 catch (Exception iox)
118 {
119 DjLogger.log(iox);
120 return false;
121 }
122 }
123
124 public static String trimLastSlash(String path)
125 {
126 String result = path;
127
128 int idx1 = path.lastIndexOf("/");
129 int idx2 = path.lastIndexOf("\\");
130
131 if (idx1 == -1) idx1 = idx2;
132 if (idx2 == -1) idx2 = idx1;
133
134 idx1 = Math.max(idx1, idx2);
135 if (idx1 != -1)
136 {
137 result = path.substring(0, idx1);
138 }
139 return result;
140 }
141
142 public static void copy(InputStream source, OutputStream target) throws IOException
143 {
144 int chunkSize = 63 * 1024;
145 byte[] ba = new byte[chunkSize];
146
147 while (true)
148 {
149
150 int bytesRead = readBlocking(source, ba, 0, chunkSize);
151 if (bytesRead > 0)
152 {
153 target.write(ba, 0, bytesRead);
154 }
155 else
156 {
157 break; }
159 }
160 }
161
162 public static final int readBlocking(InputStream in, byte b[], long off, int len) throws IOException
163 {
164 int totalBytesRead = 0;
165
166 while (totalBytesRead < len)
167 {
168 int bytesRead = in.read(b, (int) (off + totalBytesRead), len - totalBytesRead);
169 if (bytesRead < 0)
170 {
171 break;
172 }
173 totalBytesRead += bytesRead;
174 }
175 return totalBytesRead;
176 }
177
178 } |
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