summaryrefslogtreecommitdiff
path: root/libjava/java/util/zip/natDeflater.cc
diff options
context:
space:
mode:
authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/java/util/zip/natDeflater.cc
downloadcbb-gcc-4.6.4-554fd8c5195424bdbcabf5de30fdc183aba391bd.tar.bz2
cbb-gcc-4.6.4-554fd8c5195424bdbcabf5de30fdc183aba391bd.tar.xz
obtained gcc-4.6.4.tar.bz2 from upstream website;upstream
verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository.
Diffstat (limited to 'libjava/java/util/zip/natDeflater.cc')
-rw-r--r--libjava/java/util/zip/natDeflater.cc216
1 files changed, 216 insertions, 0 deletions
diff --git a/libjava/java/util/zip/natDeflater.cc b/libjava/java/util/zip/natDeflater.cc
new file mode 100644
index 000000000..9ff172109
--- /dev/null
+++ b/libjava/java/util/zip/natDeflater.cc
@@ -0,0 +1,216 @@
+// natDeflater.cc - Implementation of Deflater native methods.
+
+/* Copyright (C) 1999, 2002, 2006 Free Software Foundation
+
+ This file is part of libgcj.
+
+This software is copyrighted work licensed under the terms of the
+Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
+details. */
+
+// Written by Tom Tromey <tromey@cygnus.com>
+
+#include <config.h>
+
+#include <zlib.h>
+#include <stdlib.h>
+
+#include <gcj/cni.h>
+#include <jvm.h>
+
+#include <java/util/zip/Deflater.h>
+#include <java/util/zip/DataFormatException.h>
+
+#include <java/lang/InternalError.h>
+#include <java/lang/NullPointerException.h>
+#include <java/lang/ArrayIndexOutOfBoundsException.h>
+
+extern void *_Jv_ZMalloc (void *, uInt nitems, uInt size);
+extern void _Jv_ZFree (void *, void *addr);
+
+
+
+jint
+java::util::zip::Deflater::deflate (jbyteArray buf, jint off, jint len)
+{
+ JvSynchronize sync (this);
+ z_streamp s = (z_streamp) zstream;
+
+ if (! buf)
+ throw new java::lang::NullPointerException;
+ if (off < 0 || len < 0 || off + len > buf->length)
+ throw new java::lang::ArrayIndexOutOfBoundsException;
+
+ if (len == 0)
+ return 0;
+
+ s->next_out = (Bytef *) (elements (buf) + off);
+ s->avail_out = len;
+
+ switch (::deflate (s, flush_flag))
+ {
+ case Z_STREAM_END:
+ is_finished = true;
+ if (s->avail_out == (unsigned int) len)
+ return -1;
+ break;
+
+ case Z_STREAM_ERROR:
+ case Z_BUF_ERROR:
+ // FIXME?
+ throw new java::lang::InternalError;
+ break;
+
+ case Z_OK:
+ break;
+ }
+
+ return len - s->avail_out;
+}
+
+void
+java::util::zip::Deflater::end ()
+{
+ JvSynchronize sync (this);
+ // Just ignore errors.
+ deflateEnd ((z_streamp) zstream);
+ _Jv_Free (zstream);
+ zstream = NULL;
+}
+
+void
+java::util::zip::Deflater::finish ()
+{
+ JvSynchronize sync (this);
+ flush_flag = Z_FINISH;
+}
+
+jint
+java::util::zip::Deflater::getAdler ()
+{
+ JvSynchronize sync (this);
+ z_streamp s = (z_streamp) zstream;
+ return s->adler;
+}
+
+jlong
+java::util::zip::Deflater::getBytesRead ()
+{
+ JvSynchronize sync (this);
+ z_streamp s = (z_streamp) zstream;
+ return s->total_in;
+}
+
+jlong
+java::util::zip::Deflater::getBytesWritten ()
+{
+ JvSynchronize sync (this);
+ z_streamp s = (z_streamp) zstream;
+ return s->total_out;
+}
+
+jboolean
+java::util::zip::Deflater::needsInput ()
+{
+ JvSynchronize sync (this);
+ z_streamp s = (z_streamp) zstream;
+ return s->avail_in == 0;
+}
+
+void
+java::util::zip::Deflater::reset ()
+{
+ JvSynchronize sync (this);
+ z_streamp s = (z_streamp) zstream;
+ // Just ignore errors.
+ deflateReset (s);
+ s->avail_in = 0;
+ flush_flag = 0;
+ is_finished = false;
+}
+
+void
+java::util::zip::Deflater::setDictionary (jbyteArray buf, jint off, jint len)
+{
+ JvSynchronize sync (this);
+ z_streamp s = (z_streamp) zstream;
+
+ if (! buf)
+ throw new java::lang::NullPointerException;
+ if (off < 0 || len < 0 || off + len > buf->length)
+ throw new java::lang::ArrayIndexOutOfBoundsException;
+
+ // Ignore errors.
+ deflateSetDictionary (s, (Bytef *) (elements (buf) + off), len);
+}
+
+void
+java::util::zip::Deflater::setInput (jbyteArray buf, jint off, jint len)
+{
+ JvSynchronize sync (this);
+ z_streamp s = (z_streamp) zstream;
+
+ if (! buf)
+ throw new java::lang::NullPointerException;
+ if (off < 0 || len < 0 || off + len > buf->length)
+ throw new java::lang::ArrayIndexOutOfBoundsException;
+
+ s->next_in = (Bytef *) (elements (buf) + off);
+ s->avail_in = len;
+}
+
+void
+java::util::zip::Deflater::update ()
+{
+ JvSynchronize sync (this);
+ z_streamp s = (z_streamp) zstream;
+
+ int strat = Z_DEFAULT_STRATEGY;
+ switch (strategy)
+ {
+ case DEFAULT_STRATEGY:
+ strat = Z_DEFAULT_STRATEGY;
+ break;
+ case FILTERED:
+ strat = Z_FILTERED;
+ break;
+ case HUFFMAN_ONLY:
+ strat = Z_HUFFMAN_ONLY;
+ break;
+ default:
+ JvFail ("unexpected strategy");
+ }
+
+ // Ignore errors.
+ deflateParams (s, level, strat);
+}
+
+void
+java::util::zip::Deflater::init (jint level, jboolean no_header)
+{
+ z_stream_s *stream = (z_stream_s *) _Jv_Malloc (sizeof (z_stream_s));
+ stream->next_in = Z_NULL;
+ stream->avail_in = 0;
+ stream->zalloc = _Jv_ZMalloc;
+ stream->zfree = _Jv_ZFree;
+ stream->opaque = NULL;
+
+ // Handle NO_HEADER using undocumented zlib feature.
+ int wbits = MAX_WBITS;
+ if (no_header)
+ wbits = - wbits;
+
+#define DEFAULT_MEM_LEVEL 8
+ if (deflateInit2 (stream, level, Z_DEFLATED, wbits,
+ DEFAULT_MEM_LEVEL, Z_DEFAULT_STRATEGY) != Z_OK)
+ {
+ jstring msg = NULL;
+ if (stream->msg != NULL)
+ msg = JvNewStringLatin1 (stream->msg);
+ throw new java::lang::InternalError (msg);
+ }
+
+ zstream = reinterpret_cast<gnu::gcj::RawData *> (stream);
+ is_finished = false;
+ flush_flag = 0;
+}