1 /*
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3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
14  *
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23 
24 /*
25  * @test
26  * @bug 8033180
27  * @summary Bad newline characters
28  * @modules jdk.jdeps/com.sun.tools.javap
29  */
30 
31 import java.io.*;
32 import java.util.*;
33 
34 public class T8033180 {
35 
main(String... args)36     public static void main(String... args) throws Exception {
37         new T8033180().run();
38     }
39 
run()40     void run() throws Exception {
41         // fast-track this case, because test cannot fail in this case
42         if (lineSep.equals(nl))
43             return;
44 
45         test("-help");
46         test("-version");
47 
48         if (errors > 0)
49             throw new Exception(errors + " errors occurred");
50     }
51 
52     static final String lineSep = System.getProperty("line.separator");
53     static final String nl = "\n";
54 
test(String... opts)55     void test(String... opts) throws Exception {
56         System.err.println("test " + Arrays.asList(opts));
57         List<String> args = new ArrayList<String>();
58         args.addAll(Arrays.asList(opts));
59         StringWriter sw = new StringWriter();
60         PrintWriter pw = new PrintWriter(sw);
61         int rc = com.sun.tools.javap.Main.run(args.toArray(new String[args.size()]), pw);
62         pw.close();
63         String out = sw.toString();
64         if (rc != 0)
65             throw new Exception("javap failed unexpectedly: rc=" + rc);
66 
67         // remove all valid platform newline sequences
68         String out2 = out.replace(lineSep, "");
69 
70         // count the remaining simple newline characters
71         int count = 0;
72         int i = out2.indexOf(nl, 0);
73         while (i != -1) {
74             count++;
75             i = out2.indexOf(nl, i + nl.length());
76         }
77 
78         if (count > 0)
79             error(count + " newline characters found");
80     }
81 
error(String msg)82     void error(String msg) {
83         System.err.println("Error: " + msg);
84         errors++;
85     }
86 
87     int errors = 0;
88 }
89 
90