source: trunk/src/gcc/libjava/java/util/zip/natDeflater.cc@ 1392

Last change on this file since 1392 was 1392, checked in by bird, 22 years ago

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Line 
1// natDeflater.cc - Implementation of Deflater native methods.
2
3/* Copyright (C) 1999, 2002 Free Software Foundation
4
5 This file is part of libgcj.
6
7This software is copyrighted work licensed under the terms of the
8Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
9details. */
10
11// Written by Tom Tromey <[email protected]>
12
13#include <config.h>
14
15#include <zlib.h>
16#include <stdlib.h>
17
18#include <gcj/cni.h>
19#include <jvm.h>
20
21#include <java/util/zip/Deflater.h>
22#include <java/util/zip/DataFormatException.h>
23
24#include <java/lang/InternalError.h>
25#include <java/lang/NullPointerException.h>
26#include <java/lang/ArrayIndexOutOfBoundsException.h>
27
28extern void *_Jv_ZMalloc (void *, uInt nitems, uInt size);
29extern void _Jv_ZFree (void *, void *addr);
30
31
32
33
34jint
35java::util::zip::Deflater::deflate (jbyteArray buf, jint off, jint len)
36{
37 JvSynchronize sync (this);
38 z_streamp s = (z_streamp) zstream;
39
40 if (! buf)
41 throw new java::lang::NullPointerException;
42 if (off < 0 || len < 0 || off + len > buf->length)
43 throw new java::lang::ArrayIndexOutOfBoundsException;
44
45 if (len == 0)
46 return 0;
47
48 s->next_out = (Bytef *) (elements (buf) + off);
49 s->avail_out = len;
50
51 switch (::deflate (s, flush_flag))
52 {
53 case Z_STREAM_END:
54 is_finished = true;
55 if (s->avail_out == (unsigned int) len)
56 return -1;
57 break;
58
59 case Z_STREAM_ERROR:
60 case Z_BUF_ERROR:
61 // FIXME?
62 throw new java::lang::InternalError;
63 break;
64
65 case Z_OK:
66 break;
67 }
68
69 return len - s->avail_out;
70}
71
72void
73java::util::zip::Deflater::end ()
74{
75 JvSynchronize sync (this);
76 // Just ignore errors.
77 deflateEnd ((z_streamp) zstream);
78 _Jv_Free (zstream);
79 zstream = NULL;
80}
81
82void
83java::util::zip::Deflater::finish ()
84{
85 JvSynchronize sync (this);
86 flush_flag = Z_FINISH;
87}
88
89jint
90java::util::zip::Deflater::getAdler ()
91{
92 JvSynchronize sync (this);
93 z_streamp s = (z_streamp) zstream;
94 return s->adler;
95}
96
97jint
98java::util::zip::Deflater::getTotalIn ()
99{
100 JvSynchronize sync (this);
101 z_streamp s = (z_streamp) zstream;
102 return s->total_in;
103}
104
105jint
106java::util::zip::Deflater::getTotalOut ()
107{
108 JvSynchronize sync (this);
109 z_streamp s = (z_streamp) zstream;
110 return s->total_out;
111}
112
113jboolean
114java::util::zip::Deflater::needsInput ()
115{
116 JvSynchronize sync (this);
117 z_streamp s = (z_streamp) zstream;
118 return s->avail_in == 0;
119}
120
121void
122java::util::zip::Deflater::reset ()
123{
124 JvSynchronize sync (this);
125 z_streamp s = (z_streamp) zstream;
126 // Just ignore errors.
127 deflateReset (s);
128 s->avail_in = 0;
129 flush_flag = 0;
130 is_finished = false;
131}
132
133void
134java::util::zip::Deflater::setDictionary (jbyteArray buf, jint off, jint len)
135{
136 JvSynchronize sync (this);
137 z_streamp s = (z_streamp) zstream;
138
139 if (! buf)
140 throw new java::lang::NullPointerException;
141 if (off < 0 || len < 0 || off + len > buf->length)
142 throw new java::lang::ArrayIndexOutOfBoundsException;
143
144 // Ignore errors.
145 deflateSetDictionary (s, (Bytef *) (elements (buf) + off), len);
146}
147
148void
149java::util::zip::Deflater::setInput (jbyteArray buf, jint off, jint len)
150{
151 JvSynchronize sync (this);
152 z_streamp s = (z_streamp) zstream;
153
154 if (! buf)
155 throw new java::lang::NullPointerException;
156 if (off < 0 || len < 0 || off + len > buf->length)
157 throw new java::lang::ArrayIndexOutOfBoundsException;
158