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1
2 import java.io.*;
3 import com.jcraft.jzlib.*;
4
5
7 class test_deflate_inflate{
8
9 static final byte[] hello="hello, hello! ".getBytes();
10 static{
11 hello[hello.length-1]=0;
12 }
13
14 public static void main(String  [] arg){
15 int err;
16 int comprLen=40000;
17 int uncomprLen=comprLen;
18 byte[] compr=new byte[comprLen];
19 byte[] uncompr=new byte[uncomprLen];
20
21 ZStream c_stream=new ZStream();
22
23 err=c_stream.deflateInit(JZlib.Z_DEFAULT_COMPRESSION);
24 CHECK_ERR(c_stream, err, "deflateInit");
25
26 c_stream.next_in=hello;
27 c_stream.next_in_index=0;
28
29 c_stream.next_out=compr;
30 c_stream.next_out_index=0;
31
32 while(c_stream.total_in!=hello.length &&
33 c_stream.total_out<comprLen){
34 c_stream.avail_in=c_stream.avail_out=1; err=c_stream.deflate(JZlib.Z_NO_FLUSH);
36 CHECK_ERR(c_stream, err, "deflate");
37 }
38
39 while(true){
40 c_stream.avail_out=1;
41 err=c_stream.deflate(JZlib.Z_FINISH);
42 if(err==JZlib.Z_STREAM_END)break;
43 CHECK_ERR(c_stream, err, "deflate");
44 }
45
46 err=c_stream.deflateEnd();
47 CHECK_ERR(c_stream, err, "deflateEnd");
48
49 ZStream d_stream=new ZStream();
50
51 d_stream.next_in=compr;
52 d_stream.next_in_index=0;
53 d_stream.next_out=uncompr;
54 d_stream.next_out_index=0;
55
56 err=d_stream.inflateInit();
57 CHECK_ERR(d_stream, err, "inflateInit");
58
59 while(d_stream.total_out<uncomprLen &&
60 d_stream.total_in<comprLen) {
61 d_stream.avail_in=d_stream.avail_out=1;
62 err=d_stream.inflate(JZlib.Z_NO_FLUSH);
63 if(err==JZlib.Z_STREAM_END) break;
64 CHECK_ERR(d_stream, err, "inflate");
65 }
66
67 err=d_stream.inflateEnd();
68 CHECK_ERR(d_stream, err, "inflateEnd");
69
70 int i=0;
71 for(;i<hello.length; i++) if(hello[i]==0) break;
72 int j=0;
73 for(;j<uncompr.length; j++) if(uncompr[j]==0) break;
74
75 if(i==j){
76 for(i=0; i<j; i++) if(hello[i]!=uncompr[i]) break;
77 if(i==j){
78 System.out.println("inflate(): "+new String (uncompr, 0, j));
79 return;
80 }
81 }
82 else{
83 System.out.println("bad inflate");
84 }
85 }
86
87 static void CHECK_ERR(ZStream z, int err, String msg) {
88 if(err!=JZlib.Z_OK){
89 if(z.msg!=null) System.out.print(z.msg+" ");
90 System.out.println(msg+" error: "+err);
91 System.exit(1);
92 }
93 }
94 }
95 |
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