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1
25
26 package org.snipsnap.versioning.cookbook;
27
28 import org.snipsnap.versioning.ChangeInfo;
29
30 import java.io.*;
31 import java.util.List  ;
32 import java.util.Iterator ;
33
34
40
41 public class DiffFile {
42 public static void main(String argstrings[]) {
43 if (argstrings.length != 2) {
44 System.err.println("Usage: diff oldfile newfile");
45 System.exit(1);
46 }
47 CookbookDiff d = new CookbookDiff();
48 String oldFile = argstrings[0];
49 String newFile = argstrings[1];
50
51 System.out.println(">>>> Difference of file \"" + oldFile +
52 "\" and file \"" + newFile + "\".\n");
53
54 List result = d.diff(readFromFile(oldFile), readFromFile(newFile));
55 Iterator iterator = result.iterator();
56 while (iterator.hasNext()) {
57 ChangeInfo info = (ChangeInfo) iterator.next();
58 if (ChangeInfo.DELETE.equals(info.getType())) {
59 System.out.println("DELETE AT " + info.getFrom());
60 } else if (ChangeInfo.INSERT.equals(info.getType())) {
61 System.out.println("INSERT BEFORE " + info.getFrom());
62 } else if (ChangeInfo.CHANGE.equals(info.getType())) {
63 System.out.println("CHANGE AT " + info.getFrom());
64 } else if (ChangeInfo.MOVE.equals(info.getType())) {
65 System.out.println("MOVE FROM " + info.getFrom() + " THROUGH "+(info.getFrom()+info.getSize()-1)+" TO "+ info.getTo());
66 }
67 String [] lines = info.getLines();
68 for (int i = 0; i < lines.length; i++) {
69 String line = lines[i];
70 System.out.println(" "+line);
71 }
72 }
73
74 if (result.size() != 0) {
75 System.out.println(">>>> End of differences.");
76 } else {
77 System.out.println(">>>> Files are identical.");
78 }
79 return;
80 }
81
82 public static String readFromFile(String name) {
83 StringBuffer buffer = new StringBuffer ();
84 BufferedReader file = null;
85 try {
86 file = new BufferedReader(
87 new InputStreamReader(
88 new FileInputStream(name)));
89
90 String lineBuffer;
91 while ((lineBuffer = file.readLine()) != null) {
92 buffer.append(lineBuffer);
93 buffer.append("\n");
94 }
95 } catch (IOException e) {
96 System.err.println("Diff can't read file " +
97 name);
98 System.err.println("Error Exception was:" + e);
99 System.exit(1);
100 }
101 return buffer.toString();
102 }
103 }
104 |
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