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imported gzstream library (C++ zlib wrapper)

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git-svn-id: https://www4.informatik.uni-erlangen.de/i4svn/danceos/trunk/devel/fail@1951 8c4709b5-6ec9-48aa-a5cd-a96041d1645a
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set(SRCS set(SRCS
ElfReader.cc ElfReader.cc
ElfReader.hpp ElfReader.hpp
elfinfo/elfinfo.cc elfinfo/elfinfo.cc
elfinfo/elfinfo.h elfinfo/elfinfo.h
gzstream/gzstream.C
gzstream/gzstream.h
Logger.cc Logger.cc
Logger.hpp Logger.hpp
MemoryMap.hpp MemoryMap.hpp

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!Makefile

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# ============================================================================
# gzstream, C++ iostream classes wrapping the zlib compression library.
# Copyright (C) 2001 Deepak Bandyopadhyay, Lutz Kettner
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
# ============================================================================
#
# File : Makefile
# Revision : $Revision: 1.3 $
# Revision_date : $Date: 2001/10/04 15:09:28 $
# Author(s) : Deepak Bandyopadhyay, Lutz Kettner
#
# ============================================================================
# ----------------------------------------------------------------------------
# adapt these settings to your need:
# add '-DGZSTREAM_NAMESPACE=name' to CPPFLAGS to place the classes
# in its own namespace. Note, this macro needs to be set while creating
# the library as well while compiling applications based on it.
# As an alternative, gzstream.C and gzstream.h can be edited.
# ----------------------------------------------------------------------------
# CXX = CC -n32 -LANG:std # for SGI Irix 6.5, MIPSpro CC version 7.30
CXX = g++ # for Linux RedHat 6.1, g++ version 2.95.2
CPPFLAGS = -I. -O
LDFLAGS = -L. -lgzstream -lz
AR = ar cr
# ----------------------------------------------------------------------------
# plain simple rules to make and cleanup the library:
# make default; compiles the library
# make test; compiles and executes test. O.K. message marks success.
# make clean; removes temporary files
# make cleanall; removes temporary files, the library, and programs
# ----------------------------------------------------------------------------
default: libgzstream.a
test: test_gzip test_gunzip
./test_gzip COPYING.LIB gz.tmp.gz
gunzip gz.tmp.gz
diff COPYING.LIB gz.tmp
gzip gz.tmp
./test_gunzip gz.tmp.gz gz.tmp
diff COPYING.LIB gz.tmp
rm gz.tmp.gz gz.tmp
# *** O.K. Test finished successfully. ***
gzstream.o : gzstream.C gzstream.h
${CXX} ${CPPFLAGS} -c -o gzstream.o gzstream.C
test_gzip.o : test_gzip.C gzstream.h
${CXX} ${CPPFLAGS} -c -o test_gzip.o test_gzip.C
test_gunzip.o : test_gunzip.C gzstream.h
${CXX} ${CPPFLAGS} -c -o test_gunzip.o test_gunzip.C
libgzstream.a : gzstream.o
${AR} libgzstream.a gzstream.o
test_gzip : test_gzip.o libgzstream.a
${CXX} -o test_gzip test_gzip.o ${LDFLAGS}
test_gunzip : test_gunzip.o libgzstream.a
${CXX} -o test_gunzip test_gunzip.o ${LDFLAGS}
clean :
rm *.o
cleanall :
rm *.o libgzstream.a test_gzip test_gunzip
# ============================================================================
# EOF

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gzstream
C++ iostream classes wrapping the zlib compression library.
===========================================================================
See index.html for documentation and installation instructions.

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// ============================================================================
// gzstream, C++ iostream classes wrapping the zlib compression library.
// Copyright (C) 2001 Deepak Bandyopadhyay, Lutz Kettner
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
// ============================================================================
//
// File : gzstream.C
// Revision : $Revision: 1.7 $
// Revision_date : $Date: 2003/01/08 14:41:27 $
// Author(s) : Deepak Bandyopadhyay, Lutz Kettner
//
// Standard streambuf implementation following Nicolai Josuttis, "The
// Standard C++ Library".
// ============================================================================
#include "gzstream.h"
#include <iostream>
#include <string.h> // for memcpy
#ifdef GZSTREAM_NAMESPACE
namespace GZSTREAM_NAMESPACE {
#endif
// ----------------------------------------------------------------------------
// Internal classes to implement gzstream. See header file for user classes.
// ----------------------------------------------------------------------------
// --------------------------------------
// class gzstreambuf:
// --------------------------------------
gzstreambuf* gzstreambuf::open( const char* name, int open_mode) {
if ( is_open())
return (gzstreambuf*)0;
mode = open_mode;
// no append nor read/write mode
if ((mode & std::ios::ate) || (mode & std::ios::app)
|| ((mode & std::ios::in) && (mode & std::ios::out)))
return (gzstreambuf*)0;
char fmode[10];
char* fmodeptr = fmode;
if ( mode & std::ios::in)
*fmodeptr++ = 'r';
else if ( mode & std::ios::out)
*fmodeptr++ = 'w';
*fmodeptr++ = 'b';
*fmodeptr = '\0';
file = gzopen( name, fmode);
if (file == 0)
return (gzstreambuf*)0;
opened = 1;
return this;
}
gzstreambuf * gzstreambuf::close() {
if ( is_open()) {
sync();
opened = 0;
if ( gzclose( file) == Z_OK)
return this;
}
return (gzstreambuf*)0;
}
int gzstreambuf::underflow() { // used for input buffer only
if ( gptr() && ( gptr() < egptr()))
return * reinterpret_cast<unsigned char *>( gptr());
if ( ! (mode & std::ios::in) || ! opened)
return EOF;
// Josuttis' implementation of inbuf
int n_putback = gptr() - eback();
if ( n_putback > 4)
n_putback = 4;
memcpy( buffer + (4 - n_putback), gptr() - n_putback, n_putback);
int num = gzread( file, buffer+4, bufferSize-4);
if (num <= 0) // ERROR or EOF
return EOF;
// reset buffer pointers
setg( buffer + (4 - n_putback), // beginning of putback area
buffer + 4, // read position
buffer + 4 + num); // end of buffer
// return next character
return * reinterpret_cast<unsigned char *>( gptr());
}
int gzstreambuf::flush_buffer() {
// Separate the writing of the buffer from overflow() and
// sync() operation.
int w = pptr() - pbase();
if ( gzwrite( file, pbase(), w) != w)
return EOF;
pbump( -w);
return w;
}
int gzstreambuf::overflow( int c) { // used for output buffer only
if ( ! ( mode & std::ios::out) || ! opened)
return EOF;
if (c != EOF) {
*pptr() = c;
pbump(1);
}
if ( flush_buffer() == EOF)
return EOF;
return c;
}
int gzstreambuf::sync() {
// Changed to use flush_buffer() instead of overflow( EOF)
// which caused improper behavior with std::endl and flush(),
// bug reported by Vincent Ricard.
if ( pptr() && pptr() > pbase()) {
if ( flush_buffer() == EOF)
return -1;
}
return 0;
}
// --------------------------------------
// class gzstreambase:
// --------------------------------------
gzstreambase::gzstreambase( const char* name, int mode) {
init( &buf);
open( name, mode);
}
gzstreambase::~gzstreambase() {
buf.close();
}
void gzstreambase::open( const char* name, int open_mode) {
if ( ! buf.open( name, open_mode))
clear( rdstate() | std::ios::badbit);
}
void gzstreambase::close() {
if ( buf.is_open())
if ( ! buf.close())
clear( rdstate() | std::ios::badbit);
}
#ifdef GZSTREAM_NAMESPACE
} // namespace GZSTREAM_NAMESPACE
#endif
// ============================================================================
// EOF //

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// ============================================================================
// gzstream, C++ iostream classes wrapping the zlib compression library.
// Copyright (C) 2001 Deepak Bandyopadhyay, Lutz Kettner
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
// ============================================================================
//
// File : gzstream.h
// Revision : $Revision: 1.5 $
// Revision_date : $Date: 2002/04/26 23:30:15 $
// Author(s) : Deepak Bandyopadhyay, Lutz Kettner
//
// Standard streambuf implementation following Nicolai Josuttis, "The
// Standard C++ Library".
// ============================================================================
#ifndef GZSTREAM_H
#define GZSTREAM_H 1
// standard C++ with new header file names and std:: namespace
#include <iostream>
#include <fstream>
#include <zlib.h>
#ifdef GZSTREAM_NAMESPACE
namespace GZSTREAM_NAMESPACE {
#endif
// ----------------------------------------------------------------------------
// Internal classes to implement gzstream. See below for user classes.
// ----------------------------------------------------------------------------
class gzstreambuf : public std::streambuf {
private:
static const int bufferSize = 47+256; // size of data buff
// totals 512 bytes under g++ for igzstream at the end.
gzFile file; // file handle for compressed file
char buffer[bufferSize]; // data buffer
char opened; // open/close state of stream
int mode; // I/O mode
int flush_buffer();
public:
gzstreambuf() : opened(0) {
setp( buffer, buffer + (bufferSize-1));
setg( buffer + 4, // beginning of putback area
buffer + 4, // read position
buffer + 4); // end position
// ASSERT: both input & output capabilities will not be used together
}
int is_open() { return opened; }
gzstreambuf* open( const char* name, int open_mode);
gzstreambuf* close();
~gzstreambuf() { close(); }
virtual int overflow( int c = EOF);
virtual int underflow();
virtual int sync();
};
class gzstreambase : virtual public std::ios {
protected:
gzstreambuf buf;
public:
gzstreambase() { init(&buf); }
gzstreambase( const char* name, int open_mode);
~gzstreambase();
void open( const char* name, int open_mode);
void close();
gzstreambuf* rdbuf() { return &buf; }
};
// ----------------------------------------------------------------------------
// User classes. Use igzstream and ogzstream analogously to ifstream and
// ofstream respectively. They read and write files based on the gz*
// function interface of the zlib. Files are compatible with gzip compression.
// ----------------------------------------------------------------------------
class igzstream : public gzstreambase, public std::istream {
public:
igzstream() : std::istream( &buf) {}
igzstream( const char* name, int open_mode = std::ios::in)
: gzstreambase( name, open_mode), std::istream( &buf) {}
gzstreambuf* rdbuf() { return gzstreambase::rdbuf(); }
void open( const char* name, int open_mode = std::ios::in) {
gzstreambase::open( name, open_mode);
}
};
class ogzstream : public gzstreambase, public std::ostream {
public:
ogzstream() : std::ostream( &buf) {}
ogzstream( const char* name, int mode = std::ios::out)
: gzstreambase( name, mode), std::ostream( &buf) {}
gzstreambuf* rdbuf() { return gzstreambase::rdbuf(); }
void open( const char* name, int open_mode = std::ios::out) {
gzstreambase::open( name, open_mode);
}
};
#ifdef GZSTREAM_NAMESPACE
} // namespace GZSTREAM_NAMESPACE
#endif
#endif // GZSTREAM_H
// ============================================================================
// EOF //

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<html> <head>
<title>Gzstream Library Home Page</title>
</head>
<body BGCOLOR="FAF8E8" TEXT="#000000">
<h1>Gzstream Library Home Page</h1>
<hr>
<TABLE><TR><TD ALIGN=LEFT VALIGN=TOP>
<img border=0 src="logo.gif" align=center>
</TD><TD ALIGN=LEFT VALIGN=TOP NOWRAP>
<ul>
<li><a href="#intro"> Introduction</a>
<li><a href="#sys"> Supported Systems</a>
<li><a href="#inst"> Installation</a>
<li><a href="#doc"> Documentation</a>
<li><a href="#miss"> What's Missing</a>
<li><a href="#src"> Download</a>
<li><a href="#links"> Links</a><P>
</ul>
</TD></TR></TABLE>
<hr><!-------------------------------------------------------------------->
<a name="intro"><h2> Introduction </h2></a>
<i>Gzstream</i> is a small C++ library, basically just a wrapper,
that provides the functionality of the
<a href="http://www.gzip.org/zlib/">zlib C-library</a> in a C++ iostream.
It is freely available under the <a href="COPYING.LIB">LGPL license</a>.<P>
Gzstream has been written by
<a href="http://www.cs.unc.edu/~debug/">Deepak Bandyopadhyay</a> and
<a href="http://www.cs.unc.edu/~kettner/">Lutz Kettner</a> at
the <a href="http://www.cs.unc.edu/Research/compgeom/">Computational
Geometry Group at UNC Chapel Hill</a>.<P>
<hr><!-------------------------------------------------------------------->
<a name="sys"><h2> Supported Systems </h2></a>
Gzstream requires a standard compliant C++ compiler (we use the new
header file conventions and the new iostream in the std:: name space)
and, of course, zlib. We used zlib 1.1.3 so far, but see the <a
href="http://www.gzip.org/zlib/">zlib home page</a> for why you should
upgrade to zlib 1.1.4. So, in theory, the provided sources could run
on many platforms. However, we used only the following few
platforms.<P>
<P>
<ul>
<li> PC Linux, RedHat 6.1, g++ version 2.95.2
<li> PC Linux, Debian, g++ version 2.95.2 and 3.1
<li> SGI Irix 6.5, MIPSpro CC version 7.30
</ul><P>
<hr><!-------------------------------------------------------------------->
<a name="inst"><h2> Installation </h2></a>
Either compile <tt>gzstream.C</tt> by hand, place it in some library,
and move <tt>gzstream.h</tt> into the include search path of your
compiler. Or use the provided <tt>Makefile</tt>, adapt its
variables, and follow the remarks in the <tt>Makefile</tt>. Two
test programs are provided, <tt>test_gzip.C</tt> and <tt>test_gunzip.C</tt>.
The <tt>Makefile</tt> contains a rule that performs a small test
with these programs.<P>
<hr><!-------------------------------------------------------------------->
<a name="doc"><h2> Documentation </h2></a>
The library provides two classes, <tt>igzstream</tt> and <tt>ogzstream</tt>,
that can be used analogously to <tt>ifstream</tt> and <tt>ofstream</tt>
respectively.<P>
The classes are by default in the global name space. This can
be changed by setting the macro <tt>GZSTREAM_NAMESPACE</tt> to
the desired name space, e.g., by setting the option
</tt>-DGZSTREAM_NAMESPACE=gz</tt> in the <tt>Makefile</tt>.
However, this needs to be consistent for both, the library compilation
and the application that uses the library.<P>
<hr><!-------------------------------------------------------------------->
<a name="miss"><h2> What's Missing </h2></a>
<ul>
<li> Seek. The zlib library provides the necessary functionality,
but we have not realized that in the wrapper (yet? ;-).
<li> Both streams are based on the same streambuffer. So, they
cannot be used to derive an iogzstream class that would allow
simultaneous reading and writing to the same file.
</ul><P>
<hr><!-------------------------------------------------------------------->
<a name="src"><h2> Download and Release Notes</h2></a>
<ul>
<li> Gzstream library 1.5 (08 Apr 2003):
<a href="gzstream.tgz">gzstream.tgz</a><br>
Fixed bug that did not set the state correctly on failure to open or
close a file. <br>
Fixed bug in the indexing of the write buffer that
caused the write buffer to shrink continously and finally caused
wrong results when writing compressed files (only observed on some
platforms). <P>
<li> Gzstream library 1.4 (27 Apr 2002):<br>
Fixed a bug that stopped stream output after calling <tt>flush()</tt>
or using <tt>std::endl</tt>.<P>
<li> Gzstream library 1.3 (06 Nov 2001):<br>
Fixed unsigned char -- signed char bug. Increased buffer size
for better performance.<P>
<li> Gzstream library 1.2 (04 Oct 2001):<br>
Initial release as gzstream, renamed from zipstream.<P>
<li> Zipstream library 1.1 (09 Sep 2001):<br>
Initial release.
</ul>
<hr><!-------------------------------------------------------------------->
<a name="links"><h2> Acknowledgements </h2></a>
Credits for finding bugs and improving this software go to:
Vincent Ricard, Peter Milley, Peter J. Torelli, and Ares Lagae.
<P>
<hr><!-------------------------------------------------------------------->
<a name="links"><h2> Links </h2></a>
<ul>
<li><a href="http://www.gzip.org/zlib/">zlib C-library</a>
<li><a href="http://www.cs.unc.edu/~debug/">Deepak Bandyopadhyay</a>
<li><a href="http://www.cs.unc.edu/~kettner/">Lutz Kettner</a>
<li><a href="http://www.cs.unc.edu/Research/compgeom/">
The Computational Geometry Group at UNC Chapel Hill</a>
</ul>
<hr><!-------------------------------------------------------------------->
<address>
The Computational Geometry Group at UNC Chapel Hill, Jan. 08, 2003.
</address>
</body> </html>
<!-------------------------------------------------------------------->
<!EOF>

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// ============================================================================
// gzstream, C++ iostream classes wrapping the zlib compression library.
// Copyright (C) 2001 Deepak Bandyopadhyay, Lutz Kettner
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
// ============================================================================
//
// File : test_gunzip.C
// Revision : $Revision: 1.3 $
// Revision_date : $Date: 2001/10/04 15:09:28 $
// Author(s) : Deepak Bandyopadhyay, Lutz Kettner
//
// Short test program reading a file, uncompressing it, and writing it.
// ============================================================================
#include <gzstream.h>
#include <iostream>
#include <fstream>
#include <stdlib.h>
int main( int argc, char*argv[]) {
if ( argc != 3) {
std::cerr << "Usage: " << argv[0] <<" <in-file> <out-file>\n";
return EXIT_FAILURE;
}
// check alternate way of opening file
igzstream in2;
in2.open( argv[1]);
if ( ! in2.good()) {
std::cerr << "ERROR: Opening file `" << argv[1] << "' failed.\n";
return EXIT_FAILURE;
}
in2.close();
if ( ! in2.good()) {
std::cerr << "ERROR: Closing file `" << argv[1] << "' failed.\n";
return EXIT_FAILURE;
}
// now use the shorter way with the constructor to open the same file
igzstream in( argv[1]);
if ( ! in.good()) {
std::cerr << "ERROR: Opening file `" << argv[1] << "' failed.\n";
return EXIT_FAILURE;
}
std::ofstream out( argv[2]);
if ( ! out.good()) {
std::cerr << "ERROR: Opening file `" << argv[2] << "' failed.\n";
return EXIT_FAILURE;
}
char c;
while ( in.get(c))
out << c;
in.close();
out.close();
if ( ! in.eof()) {
std::cerr << "ERROR: Reading file `" << argv[1] << "' failed.\n";
return EXIT_FAILURE;
}
if ( ! out.good()) {
std::cerr << "ERROR: Writing file `" << argv[2] << "' failed.\n";
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
// ============================================================================
// EOF

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// ============================================================================
// gzstream, C++ iostream classes wrapping the zlib compression library.
// Copyright (C) 2001 Deepak Bandyopadhyay, Lutz Kettner
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
// ============================================================================
//
// File : test_gzip.C
// Revision : $Revision: 1.3 $
// Revision_date : $Date: 2001/10/04 15:09:28 $
// Author(s) : Deepak Bandyopadhyay, Lutz Kettner
//
// Short test program reading a file, compressing it, and writing it.
// ============================================================================
#include <gzstream.h>
#include <iostream>
#include <fstream>
#include <stdlib.h>
int main( int argc, char*argv[]) {
if ( argc != 3) {
std::cerr << "Usage: " << argv[0] <<" <in-file> <out-file>\n";
return EXIT_FAILURE;
}
// check alternate way of opening file
ogzstream out2;
out2.open( argv[2]);
if ( ! out2.good()) {
std::cerr << "ERROR: Opening file `" << argv[2] << "' failed.\n";
return EXIT_FAILURE;
}
out2.close();
if ( ! out2.good()) {
std::cerr << "ERROR: Closing file `" << argv[2] << "' failed.\n";
return EXIT_FAILURE;
}
// now use the shorter way with the constructor to open the same file
ogzstream out( argv[2]);
if ( ! out.good()) {
std::cerr << "ERROR: Opening file `" << argv[2] << "' failed.\n";
return EXIT_FAILURE;
}
std::ifstream in( argv[1]);
if ( ! in.good()) {
std::cerr << "ERROR: Opening file `" << argv[1] << "' failed.\n";
return EXIT_FAILURE;
}
char c;
while ( in.get(c))
out << c;
in.close();
out.close();
if ( ! in.eof()) {
std::cerr << "ERROR: Reading file `" << argv[1] << "' failed.\n";
return EXIT_FAILURE;
}
if ( ! out.good()) {
std::cerr << "ERROR: Writing file `" << argv[2] << "' failed.\n";
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
// ============================================================================
// EOF

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1.5 (08 Jan 2003)