/
Compare.java
189 lines (157 loc) · 6.21 KB
/
Compare.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
/**
* Logback: the reliable, generic, fast and flexible logging framework.
* Copyright (C) 1999-2015, QOS.ch. All rights reserved.
*
* This program and the accompanying materials are dual-licensed under
* either the terms of the Eclipse Public License v1.0 as published by
* the Eclipse Foundation
*
* or (per the licensee's choosing)
*
* under the terms of the GNU Lesser General Public License version 2.1
* as published by the Free Software Foundation.
*/
package ch.qos.logback.core.util;
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.Reader;
import java.util.zip.GZIPInputStream;
import java.util.zip.ZipInputStream;
public class Compare {
static final int B1_NULL = -1;
static final int B2_NULL = -2;
public static boolean compare(String file1, String file2) throws FileNotFoundException, IOException {
if (file1.endsWith(".gz")) {
return gzFileCompare(file1, file2);
} else if (file1.endsWith(".zip")) {
return zipFileCompare(file1, file2);
} else {
return regularFileCompare(file1, file2);
}
}
static BufferedReader gzFileToBufferedReader(String file) throws IOException {
FileInputStream fis = new FileInputStream(file);
GZIPInputStream gzis = new GZIPInputStream(fis);
return new BufferedReader(new InputStreamReader(gzis));
}
static BufferedReader zipFileToBufferedReader(String file) throws IOException {
FileInputStream fis = new FileInputStream(file);
ZipInputStream zis = new ZipInputStream(fis);
zis.getNextEntry();
return new BufferedReader(new InputStreamReader(zis));
}
public static boolean gzFileCompare(String file1, String file2) throws IOException {
BufferedReader in1 = gzFileToBufferedReader(file1);
BufferedReader in2 = gzFileToBufferedReader(file2);
return bufferCompare(in1, in2, file1, file2);
}
public static boolean zipFileCompare(String file1, String file2) throws IOException {
BufferedReader in1 = zipFileToBufferedReader(file1);
BufferedReader in2 = zipFileToBufferedReader(file2);
return bufferCompare(in1, in2, file1, file2);
}
public static boolean regularFileCompare(String file1, String file2) throws FileNotFoundException, IOException {
BufferedReader in1 = new BufferedReader(new FileReader(file1));
BufferedReader in2 = new BufferedReader(new FileReader(file2));
return bufferCompare(in1, in2, file1, file2);
}
public static boolean bufferCompare(BufferedReader in1, BufferedReader in2, String file1, String file2) throws FileNotFoundException, IOException {
String s1;
int lineCounter = 0;
while ((s1 = in1.readLine()) != null) {
lineCounter++;
String s2 = in2.readLine();
if (!s1.equals(s2)) {
System.out.println("Files [" + file1 + "] and [" + file2 + "] differ on line " + lineCounter);
System.out.println("One reads: [" + s1 + "].");
System.out.println("Other reads:[" + s2 + "].");
outputFile(file1);
outputFile(file2);
return false;
}
}
// the second file is longer
if (in2.read() != -1) {
System.out.println("File [" + file2 + "] longer than file [" + file1 + "].");
outputFile(file1);
outputFile(file2);
return false;
}
return true;
}
/**
*
* Prints file on the console.
*
*/
private static void outputFile(String file) throws FileNotFoundException, IOException {
BufferedReader in1 = null;
try {
in1 = new BufferedReader(new FileReader(file));
String s1;
int lineCounter = 0;
System.out.println("--------------------------------");
System.out.println("Contents of " + file + ":");
while ((s1 = in1.readLine()) != null) {
lineCounter++;
System.out.print(lineCounter);
if (lineCounter < 10) {
System.out.print(" : ");
} else if (lineCounter < 100) {
System.out.print(" : ");
} else if (lineCounter < 1000) {
System.out.print(" : ");
} else {
System.out.print(": ");
}
System.out.println(s1);
}
} finally {
close(in1);
}
}
public static boolean gzCompare(String file1, String file2) throws FileNotFoundException, IOException {
BufferedReader in1 = null;
BufferedReader in2 = null;
try {
in1 = new BufferedReader(new InputStreamReader(new GZIPInputStream(new FileInputStream(file1))));
in2 = new BufferedReader(new InputStreamReader(new GZIPInputStream(new FileInputStream(file2))));
String s1;
int lineCounter = 0;
while ((s1 = in1.readLine()) != null) {
lineCounter++;
String s2 = in2.readLine();
if (!s1.equals(s2)) {
System.out.println("Files [" + file1 + "] and [" + file2 + "] differ on line " + lineCounter);
System.out.println("One reads: [" + s1 + "].");
System.out.println("Other reads:[" + s2 + "].");
outputFile(file1);
outputFile(file2);
return false;
}
}
// the second file is longer
if (in2.read() != -1) {
System.out.println("File [" + file2 + "] longer than file [" + file1 + "].");
outputFile(file1);
outputFile(file2);
return false;
}
return true;
} finally {
close(in1);
close(in2);
}
}
static void close(Reader r) {
if (r != null)
try {
r.close();
} catch (IOException e) {
}
}
}