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authorDaniel Baumann <mail@daniel-baumann.ch>2015-11-07 15:08:12 +0000
committerDaniel Baumann <mail@daniel-baumann.ch>2015-11-07 15:08:12 +0000
commit9eab306d85e2f8e6ba93f33ce3c04f238e969b67 (patch)
treef832251ea988b9ee317ba7a6f0defea0c77fbea4
parentInitial commit. (diff)
downloadplzip-upstream/0.1.tar.xz
plzip-upstream/0.1.zip
Adding upstream version 0.1.upstream/0.1
Signed-off-by: Daniel Baumann <mail@daniel-baumann.ch>
-rw-r--r--AUTHORS4
-rw-r--r--COPYING676
-rw-r--r--ChangeLog21
-rw-r--r--INSTALL57
-rw-r--r--Makefile.in107
-rw-r--r--NEWS3
-rw-r--r--README21
-rw-r--r--arg_parser.cc193
-rw-r--r--arg_parser.h95
-rwxr-xr-xconfigure213
-rw-r--r--doc/plzip.171
-rw-r--r--doc/plzip.info303
-rw-r--r--doc/plzip.texinfo311
-rw-r--r--lacos_rbtree.cc418
-rw-r--r--lacos_rbtree.h249
-rw-r--r--main.cc1300
-rw-r--r--main.h80
-rw-r--r--plzip.cc669
-rw-r--r--plzip.h30
-rw-r--r--testsuite/COPYING.lzbin0 -> 11540 bytes
-rwxr-xr-xtestsuite/check.sh69
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diff --git a/AUTHORS b/AUTHORS
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--- /dev/null
+++ b/AUTHORS
@@ -0,0 +1,4 @@
+Plzip was written by Laszlo Ersek and Antonio Diaz Diaz.
+
+Plzip uses a simplified version of the LZMA algorithm.
+The original LZMA algorithm was designed by Igor Pavlov.
diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000..5b244d5
--- /dev/null
+++ b/COPYING
@@ -0,0 +1,676 @@
+
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+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation. If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+ If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+ Later license versions may give you additional or different
+permissions. However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+ 15. Disclaimer of Warranty.
+
+ THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+ 16. Limitation of Liability.
+
+ IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+ 17. Interpretation of Sections 15 and 16.
+
+ If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+ END OF TERMS AND CONDITIONS
+
+ How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+ To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+ <one line to give the program's name and a brief idea of what it does.>
+ Copyright (C) <year> <name of author>
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+ If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+ <program> Copyright (C) <year> <name of author>
+ This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+ This is free software, and you are welcome to redistribute it
+ under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+ You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+ The GNU General Public License does not permit incorporating your program
+into proprietary programs. If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library. If this is what you want to do, use the GNU Lesser General
+Public License instead of this License. But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
+
diff --git a/ChangeLog b/ChangeLog
new file mode 100644
index 0000000..7009187
--- /dev/null
+++ b/ChangeLog
@@ -0,0 +1,21 @@
+2009-12-05 Antonio Diaz Diaz <ant_diaz@teleline.es>
+
+ * Version 0.1 released.
+ * This version is based on llzip-0.03 (2009-11-21), written by
+ Laszlo Ersek <lacos@caesar.elte.hu>.
+ From llzip-0.03/README:
+
+ llzip is a hack on my lbzip2-0.17 release. I ripped out the
+ decompression stuff, and replaced the bzip2 compression with
+ the lzma compression from lzlib-0.7. llzip is mainly meant
+ as an assisted fork point for the lzip developers.
+ Nonetheless, I tried to review the diff against lbzip2-0.17
+ thoroughly, and I think llzip should be usable on its own
+ until something better appears on the net.
+
+
+Copyright (C) 2009 Antonio Diaz Diaz.
+
+This file is a collection of facts, and thus it is not copyrightable,
+but just in case, I give you unlimited permission to copy, distribute
+and modify it.
diff --git a/INSTALL b/INSTALL
new file mode 100644
index 0000000..4c9cac5
--- /dev/null
+++ b/INSTALL
@@ -0,0 +1,57 @@
+Requirements
+------------
+You will need a C++ compiler and the lzlib compression library installed.
+I use gcc 4.3.4 and 3.3.6, but the code should compile with any
+standards compliant compiler.
+Gcc is available at http://gcc.gnu.org.
+Lzlib is available at http://www.nongnu.org/lzip/lzlib.html.
+
+
+Procedure
+---------
+1. Unpack the archive if you have not done so already:
+
+ lzip -cd plzip[version].tar.lz | tar -xf -
+or
+ gzip -cd plzip[version].tar.gz | tar -xf -
+
+This creates the directory ./plzip[version] containing the source from
+the main archive.
+
+2. Change to plzip directory and run configure.
+ (Try `configure --help' for usage instructions).
+
+ cd plzip[version]
+ ./configure
+
+3. Run make.
+
+ make
+
+4. Optionally, type `make check' to run the tests that come with plzip.
+
+5. Type `make install' to install the program and any data files and
+ documentation.
+
+
+Another way
+-----------
+You can also compile plzip into a separate directory. To do this, you
+must use a version of `make' that supports the `VPATH' variable, such
+as GNU `make'. `cd' to the directory where you want the object files
+and executables to go and run the `configure' script. `configure'
+automatically checks for the source code in `.', in `..' and in the
+directory that `configure' is in.
+
+`configure' recognizes the option `--srcdir=DIR' to control where to
+look for the sources. Usually `configure' can determine that directory
+automatically.
+
+After running `configure', you can run `make' and `make install' as
+explained above.
+
+
+Copyright (C) 2009 Antonio Diaz Diaz.
+
+This file is free documentation: you have unlimited permission to copy,
+distribute and modify it.
diff --git a/Makefile.in b/Makefile.in
new file mode 100644
index 0000000..6f27327
--- /dev/null
+++ b/Makefile.in
@@ -0,0 +1,107 @@
+
+DISTNAME = $(progname)-$(progversion)
+INSTALL = install
+INSTALL_PROGRAM = $(INSTALL) -p -m 755
+INSTALL_DATA = $(INSTALL) -p -m 644
+INSTALL_DIR = $(INSTALL) -d -m 755
+LIBS = -llz -lpthread
+SHELL = /bin/sh
+
+objs = arg_parser.o lacos_rbtree.o plzip.o main.o
+
+
+.PHONY : all install install-info install-man install-strip \
+ uninstall uninstall-info uninstall-man \
+ doc info man check dist clean distclean
+
+all : $(progname)
+
+$(progname) : $(objs)
+ $(CXX) $(LDFLAGS) -o $(progname) $(objs) $(LIBS)
+
+$(progname)_profiled : $(objs)
+ $(CXX) $(LDFLAGS) -pg -o $(progname)_profiled $(objs) $(LIBS)
+
+main.o : main.cc
+ $(CXX) $(CPPFLAGS) $(CXXFLAGS) -DPROGVERSION=\"$(progversion)\" -c -o $@ $<
+
+%.o : %.cc
+ $(CXX) $(CPPFLAGS) $(CXXFLAGS) -c -o $@ $<
+
+$(objs) : Makefile
+arg_parser.o : arg_parser.h
+lacos_rbtree.o: lacos_rbtree.h
+main.o : arg_parser.h main.h plzip.h
+plzip.o : lacos_rbtree.h main.h plzip.h
+
+doc : info man
+
+info : $(VPATH)/doc/$(progname).info
+
+$(VPATH)/doc/$(progname).info : $(VPATH)/doc/$(progname).texinfo
+ cd $(VPATH)/doc && makeinfo $(progname).texinfo
+
+man : $(VPATH)/doc/$(progname).1
+
+$(VPATH)/doc/$(progname).1 : $(progname)
+ help2man -n 'data compressor based on the LZMA algorithm' \
+ -o $(VPATH)/doc/$(progname).1 ./$(progname)
+
+Makefile : $(VPATH)/configure $(VPATH)/Makefile.in
+ ./config.status
+
+check : all $(VPATH)/testsuite/check.sh
+ @$(VPATH)/testsuite/check.sh $(VPATH)/testsuite
+
+install : all install-info install-man
+ if test ! -d $(DESTDIR)$(bindir) ; then $(INSTALL_DIR) $(DESTDIR)$(bindir) ; fi
+ $(INSTALL_PROGRAM) ./$(progname) $(DESTDIR)$(bindir)/$(progname)
+
+install-info :
+ if test ! -d $(DESTDIR)$(infodir) ; then $(INSTALL_DIR) $(DESTDIR)$(infodir) ; fi
+ $(INSTALL_DATA) $(VPATH)/doc/$(progname).info $(DESTDIR)$(infodir)/$(progname).info
+ -install-info --info-dir=$(DESTDIR)$(infodir) $(DESTDIR)$(infodir)/$(progname).info
+
+install-man :
+ if test ! -d $(DESTDIR)$(mandir)/man1 ; then $(INSTALL_DIR) $(DESTDIR)$(mandir)/man1 ; fi
+ $(INSTALL_DATA) $(VPATH)/doc/$(progname).1 $(DESTDIR)$(mandir)/man1/$(progname).1
+
+install-strip : all
+ $(MAKE) INSTALL_PROGRAM='$(INSTALL_PROGRAM) -s' install
+
+uninstall : uninstall-info uninstall-man
+ -rm -f $(DESTDIR)$(bindir)/$(progname)
+
+uninstall-info :
+ -install-info --info-dir=$(DESTDIR)$(infodir) --remove $(DESTDIR)$(infodir)/$(progname).info
+ -rm -f $(DESTDIR)$(infodir)/$(progname).info
+
+uninstall-man :
+ -rm -f $(DESTDIR)$(mandir)/man1/$(progname).1
+
+dist :
+ ln -sf $(VPATH) $(DISTNAME)
+ tar -cvf $(DISTNAME).tar \
+ $(DISTNAME)/AUTHORS \
+ $(DISTNAME)/COPYING \
+ $(DISTNAME)/ChangeLog \
+ $(DISTNAME)/INSTALL \
+ $(DISTNAME)/Makefile.in \
+ $(DISTNAME)/NEWS \
+ $(DISTNAME)/README \
+ $(DISTNAME)/configure \
+ $(DISTNAME)/doc/$(progname).1 \
+ $(DISTNAME)/doc/$(progname).info \
+ $(DISTNAME)/doc/$(progname).texinfo \
+ $(DISTNAME)/testsuite/COPYING.lz \
+ $(DISTNAME)/testsuite/check.sh \
+ $(DISTNAME)/*.h \
+ $(DISTNAME)/*.cc
+ rm -f $(DISTNAME)
+ lzip -v -9 $(DISTNAME).tar
+
+clean :
+ -rm -f $(progname) $(progname)_profiled $(objs)
+
+distclean : clean
+ -rm -f Makefile config.status *.tar *.tar.lz
diff --git a/NEWS b/NEWS
new file mode 100644
index 0000000..5f057ce
--- /dev/null
+++ b/NEWS
@@ -0,0 +1,3 @@
+Changes in version 0.1:
+
+Initial release.
diff --git a/README b/README
new file mode 100644
index 0000000..3f9893f
--- /dev/null
+++ b/README
@@ -0,0 +1,21 @@
+Description
+
+Plzip is a parallel version of the lzip data compressor. Currently only
+compression is performed in parallel. Parallel decompression is planned
+to be implemented soon.
+
+Lzip is a lossless data compressor based on the LZMA algorithm, with
+very safe integrity checking and a user interface similar to the one of
+gzip or bzip2. Lzip decompresses almost as fast as gzip and compresses
+better than bzip2, which makes it well suited for software distribution
+and data archiving.
+
+
+Copyright (C) 2009 Antonio Diaz Diaz.
+
+This file is free documentation: you have unlimited permission to copy,
+distribute and modify it.
+
+The file Makefile.in is a data file used by configure to produce the
+Makefile. It has the same copyright owner and permissions that this
+file.
diff --git a/arg_parser.cc b/arg_parser.cc
new file mode 100644
index 0000000..b889e1a
--- /dev/null
+++ b/arg_parser.cc
@@ -0,0 +1,193 @@
+/* Arg_parser - A POSIX/GNU command line argument parser.
+ Copyright (C) 2006, 2007, 2008, 2009 Antonio Diaz Diaz.
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <cstring>
+#include <string>
+#include <vector>
+
+#include "arg_parser.h"
+
+
+bool Arg_parser::parse_long_option( const char * const opt, const char * const arg,
+ const Option options[], int & argind )
+ {
+ unsigned int len;
+ int index = -1;
+ bool exact = false, ambig = false;
+
+ for( len = 0; opt[len+2] && opt[len+2] != '='; ++len ) ;
+
+ // Test all long options for either exact match or abbreviated matches.
+ for( int i = 0; options[i].code != 0; ++i )
+ if( options[i].name && !std::strncmp( options[i].name, &opt[2], len ) )
+ {
+ if( std::strlen( options[i].name ) == len ) // Exact match found
+ { index = i; exact = true; break; }
+ else if( index < 0 ) index = i; // First nonexact match found
+ else if( options[index].code != options[i].code ||
+ options[index].has_arg != options[i].has_arg )
+ ambig = true; // Second or later nonexact match found
+ }
+
+ if( ambig && !exact )
+ {
+ error_ = "option `"; error_ += opt; error_ += "' is ambiguous";
+ return false;
+ }
+
+ if( index < 0 ) // nothing found
+ {
+ error_ = "unrecognized option `"; error_ += opt; error_ += '\'';
+ return false;
+ }
+
+ ++argind;
+ data.push_back( Record( options[index].code ) );
+
+ if( opt[len+2] ) // `--<long_option>=<argument>' syntax
+ {
+ if( options[index].has_arg == no )
+ {
+ error_ = "option `--"; error_ += options[index].name;
+ error_ += "' doesn't allow an argument";
+ return false;
+ }
+ if( options[index].has_arg == yes && !opt[len+3] )
+ {
+ error_ = "option `--"; error_ += options[index].name;
+ error_ += "' requires an argument";
+ return false;
+ }
+ data.back().argument = &opt[len+3];
+ return true;
+ }
+
+ if( options[index].has_arg == yes )
+ {
+ if( !arg || !arg[0] )
+ {
+ error_ = "option `--"; error_ += options[index].name;
+ error_ += "' requires an argument";
+ return false;
+ }
+ ++argind; data.back().argument = arg;
+ return true;
+ }
+
+ return true;
+ }
+
+
+bool Arg_parser::parse_short_option( const char * const opt, const char * const arg,
+ const Option options[], int & argind )
+ {
+ int cind = 1; // character index in opt
+
+ while( cind > 0 )
+ {
+ int index = -1;
+ const unsigned char c = opt[cind];
+
+ if( c != 0 )
+ for( int i = 0; options[i].code; ++i )
+ if( c == options[i].code )
+ { index = i; break; }
+
+ if( index < 0 )
+ {
+ error_ = "invalid option -- "; error_ += c;
+ return false;
+ }
+
+ data.push_back( Record( c ) );
+ if( opt[++cind] == 0 ) { ++argind; cind = 0; } // opt finished
+
+ if( options[index].has_arg != no && cind > 0 && opt[cind] )
+ {
+ data.back().argument = &opt[cind]; ++argind; cind = 0;
+ }
+ else if( options[index].has_arg == yes )
+ {
+ if( !arg || !arg[0] )
+ {
+ error_ = "option requires an argument -- "; error_ += c;
+ return false;
+ }
+ data.back().argument = arg; ++argind; cind = 0;
+ }
+ }
+ return true;
+ }
+
+
+Arg_parser::Arg_parser( const int argc, const char * const argv[],
+ const Option options[], const bool in_order )
+ {
+ if( argc < 2 || !argv || !options ) return;
+
+ std::vector< std::string > non_options; // skipped non-options
+ int argind = 1; // index in argv
+
+ while( argind < argc )
+ {
+ const unsigned char ch1 = argv[argind][0];
+ const unsigned char ch2 = ( ch1 ? argv[argind][1] : 0 );
+
+ if( ch1 == '-' && ch2 ) // we found an option
+ {
+ const char * const opt = argv[argind];
+ const char * const arg = (argind + 1 < argc) ? argv[argind+1] : 0;
+ if( ch2 == '-' )
+ {
+ if( !argv[argind][2] ) { ++argind; break; } // we found "--"
+ else if( !parse_long_option( opt, arg, options, argind ) ) break;
+ }
+ else if( !parse_short_option( opt, arg, options, argind ) ) break;
+ }
+ else
+ {
+ if( !in_order ) non_options.push_back( argv[argind++] );
+ else { data.push_back( Record() ); data.back().argument = argv[argind++]; }
+ }
+ }
+ if( error_.size() ) data.clear();
+ else
+ {
+ for( unsigned int i = 0; i < non_options.size(); ++i )
+ { data.push_back( Record() ); data.back().argument.swap( non_options[i] ); }
+ while( argind < argc )
+ { data.push_back( Record() ); data.back().argument = argv[argind++]; }
+ }
+ }
+
+
+Arg_parser::Arg_parser( const char * const opt, const char * const arg,
+ const Option options[] )
+ {
+ if( !opt || !opt[0] || !options ) return;
+
+ if( opt[0] == '-' && opt[1] ) // we found an option
+ {
+ int argind = 1; // dummy
+ if( opt[1] == '-' )
+ { if( opt[2] ) parse_long_option( opt, arg, options, argind ); }
+ else
+ parse_short_option( opt, arg, options, argind );
+ if( error_.size() ) data.clear();
+ }
+ else { data.push_back( Record() ); data.back().argument = opt; }
+ }
diff --git a/arg_parser.h b/arg_parser.h
new file mode 100644
index 0000000..fa6161b
--- /dev/null
+++ b/arg_parser.h
@@ -0,0 +1,95 @@
+/* Arg_parser - A POSIX/GNU command line argument parser.
+ Copyright (C) 2006, 2007, 2008, 2009 Antonio Diaz Diaz.
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/* Arg_parser reads the arguments in `argv' and creates a number of
+ option codes, option arguments and non-option arguments.
+
+ In case of error, `error' returns a non-empty error message.
+
+ `options' is an array of `struct Option' terminated by an element
+ containing a code which is zero. A null name means a short-only
+ option. A code value outside the unsigned char range means a
+ long-only option.
+
+ Arg_parser normally makes it appear as if all the option arguments
+ were specified before all the non-option arguments for the purposes
+ of parsing, even if the user of your program intermixed option and
+ non-option arguments. If you want the arguments in the exact order
+ the user typed them, call `Arg_parser' with `in_order' = true.
+
+ The argument `--' terminates all options; any following arguments are
+ treated as non-option arguments, even if they begin with a hyphen.
+
+ The syntax for optional option arguments is `-<short_option><argument>'
+ (without whitespace), or `--<long_option>=<argument>'.
+*/
+
+class Arg_parser
+ {
+public:
+ enum Has_arg { no, yes, maybe };
+
+ struct Option
+ {
+ int code; // Short option letter or code ( code != 0 )
+ const char * name; // Long option name (maybe null)
+ Has_arg has_arg;
+ };
+
+private:
+ struct Record
+ {
+ int code;
+ std::string argument;
+ Record( const int c = 0 ) : code( c ) {}
+ };
+
+ std::string error_;
+ std::vector< Record > data;
+
+ bool parse_long_option( const char * const opt, const char * const arg,
+ const Option options[], int & argind );
+ bool parse_short_option( const char * const opt, const char * const arg,
+ const Option options[], int & argind );
+
+public:
+ Arg_parser( const int argc, const char * const argv[],
+ const Option options[], const bool in_order = false );
+
+ // Restricted constructor. Parses a single token and argument (if any)
+ Arg_parser( const char * const opt, const char * const arg,
+ const Option options[] );
+
+ const std::string & error() const throw() { return error_; }
+
+ // The number of arguments parsed (may be different from argc)
+ int arguments() const throw() { return data.size(); }
+
+ // If code( i ) is 0, argument( i ) is a non-option.
+ // Else argument( i ) is the option's argument (or empty).
+ int code( const int i ) const throw()
+ {
+ if( i >= 0 && i < arguments() ) return data[i].code;
+ else return 0;
+ }
+
+ const std::string & argument( const int i ) const throw()
+ {
+ if( i >= 0 && i < arguments() ) return data[i].argument;
+ else return error_;
+ }
+ };
diff --git a/configure b/configure
new file mode 100755
index 0000000..6f18fa3
--- /dev/null
+++ b/configure
@@ -0,0 +1,213 @@
+#! /bin/sh
+# configure script for Plzip - A parallel version of the lzip data compressor
+# Copyright (C) 2009 Antonio Diaz Diaz.
+#
+# This configure script is free software: you have unlimited permission
+# to copy, distribute and modify it.
+#
+# Date of this version: 2009-09-05
+
+args=
+no_create=
+progname=plzip
+progversion=0.1
+srctrigger=plzip.h
+
+# clear some things potentially inherited from environment.
+LC_ALL=C
+export LC_ALL
+srcdir=
+prefix=/usr/local
+exec_prefix='$(prefix)'
+bindir='$(exec_prefix)/bin'
+datadir='$(prefix)/share'
+infodir='$(datadir)/info'
+mandir='$(datadir)/man'
+sysconfdir='$(prefix)/etc'
+CC=
+CXX=
+CPPFLAGS=
+CFLAGS='-Wall -W -O2'
+CXXFLAGS='-Wall -W -O2'
+LDFLAGS=
+
+# Loop over all args
+while [ x"$1" != x ] ; do
+
+ # Get the first arg, and shuffle
+ option=$1
+ shift
+
+ # Add the argument quoted to args
+ args="${args} \"${option}\""
+
+ # Split out the argument for options that take them
+ case ${option} in
+ *=*) optarg=`echo ${option} | sed -e 's,^[^=]*=,,'` ;;
+ esac
+
+ # Process the options
+ case ${option} in
+ --help | --he* | -h)
+ echo "Usage: configure [options]"
+ echo
+ echo "Options: [defaults in brackets]"
+ echo " -h, --help display this help and exit"
+ echo " -V, --version output version information and exit"
+ echo " --srcdir=DIR find the sources in DIR [. or ..]"
+ echo " --prefix=DIR install into DIR [${prefix}]"
+ echo " --exec-prefix=DIR base directory for arch-dependent files [${exec_prefix}]"
+ echo " --bindir=DIR user executables directory [${bindir}]"
+ echo " --datadir=DIR base directory for doc and data [${datadir}]"
+ echo " --infodir=DIR info files directory [${infodir}]"
+ echo " --mandir=DIR man pages directory [${mandir}]"
+ echo " --sysconfdir=DIR read-only single-machine data directory [${sysconfdir}]"
+ echo " CC=COMPILER C compiler to use [gcc]"
+ echo " CXX=COMPILER C++ compiler to use [g++]"
+ echo " CPPFLAGS=OPTIONS command line options for the preprocessor [${CPPFLAGS}]"
+ echo " CFLAGS=OPTIONS command line options for the C compiler [${CFLAGS}]"
+ echo " CXXFLAGS=OPTIONS command line options for the C++ compiler [${CXXFLAGS}]"
+ echo " LDFLAGS=OPTIONS command line options for the linker [${LDFLAGS}]"
+ echo
+ exit 0 ;;
+ --version | --ve* | -V)
+ echo "Configure script for ${progname} version ${progversion}"
+ exit 0 ;;
+ --srcdir* | --sr*)
+ srcdir=`echo ${optarg} | sed -e 's,/$,,'` ;;
+ --prefix* | --pr*)
+ prefix=`echo ${optarg} | sed -e 's,/$,,'` ;;
+ --exec-prefix* | --ex*)
+ exec_prefix=`echo ${optarg} | sed -e 's,/$,,'` ;;
+ --bindir* | --bi*)
+ bindir=`echo ${optarg} | sed -e 's,/$,,'` ;;
+ --datadir* | --da*)
+ datadir=`echo ${optarg} | sed -e 's,/$,,'` ;;
+ --infodir* | --in*)
+ infodir=`echo ${optarg} | sed -e 's,/$,,'` ;;
+ --mandir* | --ma*)
+ mandir=`echo ${optarg} | sed -e 's,/$,,'` ;;
+ --sysconfdir* | --sy*)
+ sysconfdir=`echo ${optarg} | sed -e 's,/$,,'` ;;
+ --no-create | --no-c*)
+ no_create=yes ;;
+
+ CC=*) CC=${optarg} ;;
+ CXX=*) CXX=${optarg} ;;
+ CPPFLAGS=*) CPPFLAGS=${optarg} ;;
+ CFLAGS=*) CFLAGS=${optarg} ;;
+ CXXFLAGS=*) CXXFLAGS=${optarg} ;;
+ LDFLAGS=*) LDFLAGS=${optarg} ;;
+
+ --* | *=* | *-*-*) ;;
+ *)
+ echo "configure: Unrecognized option: \"${option}\"; use --help for usage." 1>&2
+ exit 1 ;;
+ esac
+done
+
+# Find the source files, if location was not specified.
+srcdirtext=
+if [ x"${srcdir}" = x ] ; then
+ srcdirtext="or . or .." ; srcdir=.
+ if [ ! -r ${srcdir}/${srctrigger} ] ; then srcdir=.. ; fi
+ if [ ! -r ${srcdir}/${srctrigger} ] ; then
+ ## the sed command below emulates the dirname command
+ srcdir=`echo $0 | sed -e 's,[^/]*$,,;s,/$,,;s,^$,.,'`
+ fi
+fi
+
+if [ ! -r ${srcdir}/${srctrigger} ] ; then
+ exec 1>&2
+ echo
+ echo "configure: Can't find sources in ${srcdir} ${srcdirtext}"
+ echo "configure: (At least ${srctrigger} is missing)."
+ exit 1
+fi
+
+# Set srcdir to . if that's what it is.
+if [ "`pwd`" = "`cd ${srcdir} ; pwd`" ] ; then srcdir=. ; fi
+
+# checking whether we are using GNU C.
+if [ x"${CC}" = x ] ; then # Let the user override the test.
+ if [ -x /bin/gcc ] ||
+ [ -x /usr/bin/gcc ] ||
+ [ -x /usr/local/bin/gcc ] ; then
+ CC="gcc"
+ else
+ CC="cc"
+ fi
+fi
+
+# checking whether we are using GNU C++.
+if [ x"${CXX}" = x ] ; then # Let the user override the test.
+ if [ -x /bin/g++ ] ||
+ [ -x /usr/bin/g++ ] ||
+ [ -x /usr/local/bin/g++ ] ; then
+ CXX="g++"
+ else
+ CXX="c++"
+ fi
+fi
+
+echo
+if [ x${no_create} = x ] ; then
+ echo "creating config.status"
+ rm -f config.status
+ cat > config.status << EOF
+#! /bin/sh
+# This file was generated automatically by configure. Do not edit.
+# Run this file to recreate the current configuration.
+#
+# This script is free software: you have unlimited permission
+# to copy, distribute and modify it.
+
+exec /bin/sh $0 ${args} --no-create
+EOF
+ chmod +x config.status
+fi
+
+echo "creating Makefile"
+echo "VPATH = ${srcdir}"
+echo "prefix = ${prefix}"
+echo "exec_prefix = ${exec_prefix}"
+echo "bindir = ${bindir}"
+echo "datadir = ${datadir}"
+echo "infodir = ${infodir}"
+echo "mandir = ${mandir}"
+echo "sysconfdir = ${sysconfdir}"
+echo "CC = ${CC}"
+echo "CXX = ${CXX}"
+echo "CPPFLAGS = ${CPPFLAGS}"
+echo "CFLAGS = ${CFLAGS}"
+echo "CXXFLAGS = ${CXXFLAGS}"
+echo "LDFLAGS = ${LDFLAGS}"
+rm -f Makefile
+cat > Makefile << EOF
+# Makefile for Plzip - A parallel version of the lzip data compressor
+# Copyright (C) 2009 Antonio Diaz Diaz.
+# This file was generated automatically by configure. Do not edit.
+#
+# This Makefile is free software: you have unlimited permission
+# to copy, distribute and modify it.
+
+progname = ${progname}
+progversion = ${progversion}
+VPATH = ${srcdir}
+prefix = ${prefix}
+exec_prefix = ${exec_prefix}
+bindir = ${bindir}
+datadir = ${datadir}
+infodir = ${infodir}
+mandir = ${mandir}
+sysconfdir = ${sysconfdir}
+CC = ${CC}
+CXX = ${CXX}
+CPPFLAGS = ${CPPFLAGS}
+CFLAGS = ${CFLAGS}
+CXXFLAGS = ${CXXFLAGS}
+LDFLAGS = ${LDFLAGS}
+EOF
+cat ${srcdir}/Makefile.in >> Makefile
+
+echo "OK. Now you can run make."
diff --git a/doc/plzip.1 b/doc/plzip.1
new file mode 100644
index 0000000..4a812c0
--- /dev/null
+++ b/doc/plzip.1
@@ -0,0 +1,71 @@
+.\" DO NOT MODIFY THIS FILE! It was generated by help2man 1.36.
+.TH PLZIP "1" "December 2009" "Plzip 0.1" "User Commands"
+.SH NAME
+Plzip \- data compressor based on the LZMA algorithm
+.SH SYNOPSIS
+.B plzip
+[\fIoptions\fR] [\fIfiles\fR]
+.SH DESCRIPTION
+Plzip \- A parallel version of the lzip data compressor.
+.SH OPTIONS
+.TP
+\fB\-h\fR, \fB\-\-help\fR
+display this help and exit
+.TP
+\fB\-V\fR, \fB\-\-version\fR
+output version information and exit
+.TP
+\fB\-c\fR, \fB\-\-stdout\fR
+send output to standard output
+.TP
+\fB\-d\fR, \fB\-\-decompress\fR
+decompress
+.TP
+\fB\-n\fR, \fB\-\-threads=\fR<n>
+set the number of (de)compression threads
+.TP
+\fB\-q\fR, \fB\-\-quiet\fR
+suppress all messages
+.TP
+\fB\-t\fR, \fB\-\-test\fR
+test compressed file integrity
+.TP
+\fB\-v\fR, \fB\-\-verbose\fR
+be verbose (a 2nd \fB\-v\fR gives more)
+.TP
+\fB\-1\fR .. \fB\-9\fR
+set compression level [default 6]
+.TP
+\fB\-\-fast\fR
+alias for \fB\-1\fR
+.TP
+\fB\-\-best\fR
+alias for \fB\-9\fR
+.PP
+If no file names are given, plzip compresses or decompresses
+from standard input to standard output.
+Numbers may be followed by a multiplier: k = kB = 10^3 = 1000,
+Ki = KiB = 2^10 = 1024, M = 10^6, Mi = 2^20, G = 10^9, Gi = 2^30, etc...
+.SH "REPORTING BUGS"
+Report bugs to lzip\-bug@nongnu.org
+Lzip home page: http://www.nongnu.org/lzip/lzip.html
+.SH COPYRIGHT
+Copyright \(co 2009 Laszlo Ersek.
+.br
+Copyright \(co 2009 Antonio Diaz Diaz.
+License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
+.br
+This is free software: you are free to change and redistribute it.
+There is NO WARRANTY, to the extent permitted by law.
+.SH "SEE ALSO"
+The full documentation for
+.B Plzip
+is maintained as a Texinfo manual. If the
+.B info
+and
+.B Plzip
+programs are properly installed at your site, the command
+.IP
+.B info Plzip
+.PP
+should give you access to the complete manual.
diff --git a/doc/plzip.info b/doc/plzip.info
new file mode 100644
index 0000000..68fa5fa
--- /dev/null
+++ b/doc/plzip.info
@@ -0,0 +1,303 @@
+This is plzip.info, produced by makeinfo version 4.13 from
+plzip.texinfo.
+
+INFO-DIR-SECTION Data Compression
+START-INFO-DIR-ENTRY
+* Plzip: (plzip). Parallel version of the lzip data compressor
+END-INFO-DIR-ENTRY
+
+
+File: plzip.info, Node: Top, Next: Introduction, Up: (dir)
+
+Plzip Manual
+************
+
+This manual is for Plzip (version 0.1, 5 December 2009).
+
+* Menu:
+
+* Introduction:: Purpose and features of plzip
+* Invoking Plzip:: Command line interface
+* File Format:: Detailed format of the compressed file
+* Problems:: Reporting bugs
+* Concept Index:: Index of concepts
+
+
+ Copyright (C) 2008, 2009 Antonio Diaz Diaz.
+
+ This manual is free documentation: you have unlimited permission to
+copy, distribute and modify it.
+
+
+File: plzip.info, Node: Introduction, Next: Invoking Plzip, Prev: Top, Up: Top
+
+1 Introduction
+**************
+
+Plzip is a parallel version of the lzip data compressor. Currently only
+compression is performed in parallel. Parallel decompression is planned
+to be implemented soon.
+
+ Lzip is a lossless data compressor based on the LZMA algorithm, with
+very safe integrity checking and a user interface similar to the one of
+gzip or bzip2. Lzip decompresses almost as fast as gzip and compresses
+better than bzip2, which makes it well suited for software distribution
+and data archiving.
+
+ Plzip replaces every file given in the command line with a compressed
+version of itself, with the name "original_name.lz". Each compressed
+file has the same modification date, permissions, and, when possible,
+ownership as the corresponding original, so that these properties can be
+correctly restored at decompression time. Plzip is able to read from
+some types of non regular files if the `--stdout' option is specified.
+
+ If no file names are specified, plzip compresses (or decompresses)
+from standard input to standard output. In this case, plzip will
+decline to write compressed output to a terminal, as this would be
+entirely incomprehensible and therefore pointless.
+
+ Plzip will correctly decompress a file which is the concatenation of
+two or more compressed files. The result is the concatenation of the
+corresponding uncompressed files. Integrity testing of concatenated
+compressed files is also supported.
+
+ When decompressing, plzip attempts to guess the name for the
+decompressed file from that of the compressed file as follows:
+
+filename.lz becomes filename
+filename.tlz becomes filename.tar
+anyothername becomes anyothername.out
+
+ As a self-check for your protection, plzip stores in the member
+trailer the 32-bit CRC of the original data and the size of the
+original data, to make sure that the decompressed version of the data
+is identical to the original. This guards against corruption of the
+compressed data, and against undetected bugs in plzip (hopefully very
+unlikely). The chances of data corruption going undetected are
+microscopic, less than one chance in 4000 million for each member
+processed. Be aware, though, that the check occurs upon decompression,
+so it can only tell you that something is wrong. It can't help you
+recover the original uncompressed data.
+
+ Return values: 0 for a normal exit, 1 for environmental problems
+(file not found, invalid flags, I/O errors, etc), 2 to indicate a
+corrupt or invalid input file, 3 for an internal consistency error (eg,
+bug) which caused plzip to panic.
+
+
+File: plzip.info, Node: Invoking Plzip, Next: File Format, Prev: Introduction, Up: Top
+
+2 Invoking Plzip
+****************
+
+The format for running plzip is:
+
+ plzip [OPTIONS] [FILES]
+
+ Plzip supports the following options:
+
+`--help'
+`-h'
+ Print an informative help message describing the options and exit.
+
+`--version'
+`-V'
+ Print the version number of plzip on the standard output and exit.
+
+`--stdout'
+`-c'
+ Compress or decompress to standard output. Needed when reading
+ from a named pipe (fifo) or from a device.
+
+`--decompress'
+`-d'
+ Decompress.
+
+`--force'
+`-f'
+ Force overwrite of output file.
+
+`--keep'
+`-k'
+ Keep (don't delete) input files during compression or
+ decompression.
+
+`--match-length=LENGTH'
+`-m LENGTH'
+ Set the match length limit in bytes. Valid values range from 5 to
+ 273. Larger values usually give better compression ratios but
+ longer compression times.
+
+`--output=FILE'
+`-o FILE'
+ When reading from standard input and `--stdout' has not been
+ specified, use `FILE' as the virtual name of the uncompressed
+ file. This produces a file named `FILE' when decompressing, and a
+ file named `FILE.lz' when compressing.
+
+`--quiet'
+`-q'
+ Quiet operation. Suppress all messages.
+
+`--dictionary-size=SIZE'
+`-s SIZE'
+ Set the dictionary size limit in bytes. Valid values range from
+ 4KiB to 512MiB. Note that dictionary sizes are quantized. If the
+ specified size does not match one of the valid sizes, it will be
+ rounded upwards.
+
+`--test'
+`-t'
+ Check integrity of the specified file(s), but don't decompress
+ them. This really performs a trial decompression and throws away
+ the result. Use `-tvv' or `-tvvv' to see information about the
+ file.
+
+`--verbose'
+`-v'
+ Verbose mode. Show the compression ratio for each file processed.
+ Further -v's increase the verbosity level.
+
+`-1 .. -9'
+ Set the compression parameters (dictionary size and match length
+ limit) as shown in the table below. Note that `-9' can be much
+ slower than `-1'. These options have no effect when decompressing.
+
+ Level Dictionary size Match length limit
+ -1 1MiB 10 bytes
+ -2 1MiB 12 bytes
+ -3 1MiB 17 bytes
+ -4 2MiB 26 bytes
+ -5 4MiB 44 bytes
+ -6 8MiB 80 bytes
+ -7 16MiB 108 bytes
+ -8 16MiB 163 bytes
+ -9 32MiB 273 bytes
+
+`--fast'
+`--best'
+ Aliases for GNU gzip compatibility.
+
+
+
+ Numbers given as arguments to options may be followed by a multiplier
+and an optional `B' for "byte".
+
+ Table of SI and binary prefixes (unit multipliers):
+
+Prefix Value | Prefix Value
+k kilobyte (10^3 = 1000) | Ki kibibyte (2^10 = 1024)
+M megabyte (10^6) | Mi mebibyte (2^20)
+G gigabyte (10^9) | Gi gibibyte (2^30)
+T terabyte (10^12) | Ti tebibyte (2^40)
+P petabyte (10^15) | Pi pebibyte (2^50)
+E exabyte (10^18) | Ei exbibyte (2^60)
+Z zettabyte (10^21) | Zi zebibyte (2^70)
+Y yottabyte (10^24) | Yi yobibyte (2^80)
+
+
+File: plzip.info, Node: File Format, Next: Problems, Prev: Invoking Plzip, Up: Top
+
+3 File Format
+*************
+
+In the diagram below, a box like this:
++---+
+| | <-- the vertical bars might be missing
++---+
+
+ represents one byte; a box like this:
++==============+
+| |
++==============+
+
+ represents a variable number of bytes.
+
+
+ A lzip file consists of a series of "members" (compressed data sets).
+The members simply appear one after another in the file, with no
+additional information before, between, or after them.
+
+ Each member has the following structure:
++--+--+--+--+----+----+=============+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+| ID string | VN | DS | Lzma stream | CRC32 | Data size | Member size |
++--+--+--+--+----+----+=============+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+
+ All multibyte values are stored in little endian order.
+
+`ID string'
+ A four byte string, identifying the member type, with the value
+ "LZIP".
+
+`VN (version number, 1 byte)'
+ Just in case something needs to be modified in the future. Valid
+ values are 0 and 1. Version 0 files have only one member and lack
+ `Member size'.
+
+`DS (coded dictionary size, 1 byte)'
+ Bits 4-0 contain the base 2 logarithm of the base dictionary size.
+ Bits 7-5 contain the number of "wedges" to substract from the base
+ dictionary size to obtain the dictionary size. The size of a wedge
+ is (base dictionary size / 16).
+ Valid values for dictionary size range from 4KiB to 512MiB.
+
+`Lzma stream'
+ The lzma stream, finished by an end of stream marker. Uses default
+ values for encoder properties.
+
+`CRC32 (4 bytes)'
+ CRC of the uncompressed original data.
+
+`Data size (8 bytes)'
+ Size of the uncompressed original data.
+
+`Member size (8 bytes)'
+ Total size of the member, including header and trailer. This
+ facilitates safe recovery of undamaged members from multimember
+ files.
+
+
+
+File: plzip.info, Node: Problems, Next: Concept Index, Prev: File Format, Up: Top
+
+4 Reporting Bugs
+****************
+
+There are probably bugs in plzip. There are certainly errors and
+omissions in this manual. If you report them, they will get fixed. If
+you don't, no one will ever know about them and they will remain unfixed
+for all eternity, if not longer.
+
+ If you find a bug in plzip, please send electronic mail to
+<lzip-bug@nongnu.org>. Include the version number, which you can find
+by running `plzip --version'.
+
+
+File: plzip.info, Node: Concept Index, Prev: Problems, Up: Top
+
+Concept Index
+*************
+
+
+* Menu:
+
+* bugs: Problems. (line 6)
+* file format: File Format. (line 6)
+* getting help: Problems. (line 6)
+* introduction: Introduction. (line 6)
+* invoking: Invoking Plzip. (line 6)
+* options: Invoking Plzip. (line 6)
+* usage: Invoking Plzip. (line 6)
+* version: Invoking Plzip. (line 6)
+
+
+
+Tag Table:
+Node: Top227
+Node: Introduction750
+Node: Invoking Plzip3401
+Node: File Format6746
+Node: Problems8702
+Node: Concept Index9231
+
+End Tag Table
diff --git a/doc/plzip.texinfo b/doc/plzip.texinfo
new file mode 100644
index 0000000..78ccce5
--- /dev/null
+++ b/doc/plzip.texinfo
@@ -0,0 +1,311 @@
+\input texinfo @c -*-texinfo-*-
+@c %**start of header
+@setfilename plzip.info
+@settitle Plzip Manual
+@finalout
+@c %**end of header
+
+@set UPDATED 5 December 2009
+@set VERSION 0.1
+
+@dircategory Data Compression
+@direntry
+* Plzip: (plzip). Parallel version of the lzip data compressor
+@end direntry
+
+
+@titlepage
+@title Plzip
+@subtitle A data compressor based on the LZMA algorithm
+@subtitle for Plzip version @value{VERSION}, @value{UPDATED}
+@author by Antonio Diaz Diaz
+
+@page
+@vskip 0pt plus 1filll
+@end titlepage
+
+@contents
+
+@node Top
+@top
+
+This manual is for Plzip (version @value{VERSION}, @value{UPDATED}).
+
+@menu
+* Introduction:: Purpose and features of plzip
+* Invoking Plzip:: Command line interface
+* File Format:: Detailed format of the compressed file
+* Problems:: Reporting bugs
+* Concept Index:: Index of concepts
+@end menu
+
+@sp 1
+Copyright @copyright{} 2008, 2009 Antonio Diaz Diaz.
+
+This manual is free documentation: you have unlimited permission
+to copy, distribute and modify it.
+
+
+@node Introduction
+@chapter Introduction
+@cindex introduction
+
+Plzip is a parallel version of the lzip data compressor. Currently only
+compression is performed in parallel. Parallel decompression is planned
+to be implemented soon.
+
+Lzip is a lossless data compressor based on the LZMA algorithm, with
+very safe integrity checking and a user interface similar to the one of
+gzip or bzip2. Lzip decompresses almost as fast as gzip and compresses
+better than bzip2, which makes it well suited for software distribution
+and data archiving.
+
+Plzip replaces every file given in the command line with a compressed
+version of itself, with the name "original_name.lz". Each compressed
+file has the same modification date, permissions, and, when possible,
+ownership as the corresponding original, so that these properties can be
+correctly restored at decompression time. Plzip is able to read from some
+types of non regular files if the @samp{--stdout} option is specified.
+
+If no file names are specified, plzip compresses (or decompresses) from
+standard input to standard output. In this case, plzip will decline to
+write compressed output to a terminal, as this would be entirely
+incomprehensible and therefore pointless.
+
+Plzip will correctly decompress a file which is the concatenation of two
+or more compressed files. The result is the concatenation of the
+corresponding uncompressed files. Integrity testing of concatenated
+compressed files is also supported.
+
+When decompressing, plzip attempts to guess the name for the decompressed
+file from that of the compressed file as follows:
+
+@multitable {anyothername} {becomes} {anyothername.out}
+@item filename.lz @tab becomes @tab filename
+@item filename.tlz @tab becomes @tab filename.tar
+@item anyothername @tab becomes @tab anyothername.out
+@end multitable
+
+As a self-check for your protection, plzip stores in the member trailer
+the 32-bit CRC of the original data and the size of the original data,
+to make sure that the decompressed version of the data is identical to
+the original. This guards against corruption of the compressed data, and
+against undetected bugs in plzip (hopefully very unlikely). The chances
+of data corruption going undetected are microscopic, less than one
+chance in 4000 million for each member processed. Be aware, though, that
+the check occurs upon decompression, so it can only tell you that
+something is wrong. It can't help you recover the original uncompressed
+data.
+
+Return values: 0 for a normal exit, 1 for environmental problems (file
+not found, invalid flags, I/O errors, etc), 2 to indicate a corrupt or
+invalid input file, 3 for an internal consistency error (eg, bug) which
+caused plzip to panic.
+
+
+@node Invoking Plzip
+@chapter Invoking Plzip
+@cindex invoking
+@cindex options
+@cindex usage
+@cindex version
+
+The format for running plzip is:
+
+@example
+plzip [@var{options}] [@var{files}]
+@end example
+
+Plzip supports the following options:
+
+@table @samp
+@item --help
+@itemx -h
+Print an informative help message describing the options and exit.
+
+@item --version
+@itemx -V
+Print the version number of plzip on the standard output and exit.
+
+@item --stdout
+@itemx -c
+Compress or decompress to standard output. Needed when reading from a
+named pipe (fifo) or from a device.
+
+@item --decompress
+@itemx -d
+Decompress.
+
+@item --force
+@itemx -f
+Force overwrite of output file.
+
+@item --keep
+@itemx -k
+Keep (don't delete) input files during compression or decompression.
+
+@item --match-length=@var{length}
+@itemx -m @var{length}
+Set the match length limit in bytes. Valid values range from 5 to 273.
+Larger values usually give better compression ratios but longer
+compression times.
+
+@item --output=@var{file}
+@itemx -o @var{file}
+When reading from standard input and @samp{--stdout} has not been
+specified, use @samp{@var{file}} as the virtual name of the uncompressed
+file. This produces a file named @samp{@var{file}} when decompressing,
+and a file named @samp{@var{file}.lz} when compressing.
+
+@item --quiet
+@itemx -q
+Quiet operation. Suppress all messages.
+
+@item --dictionary-size=@var{size}
+@itemx -s @var{size}
+Set the dictionary size limit in bytes. Valid values range from 4KiB to
+512MiB. Note that dictionary sizes are quantized. If the specified size
+does not match one of the valid sizes, it will be rounded upwards.
+
+@item --test
+@itemx -t
+Check integrity of the specified file(s), but don't decompress them.
+This really performs a trial decompression and throws away the result.
+Use @samp{-tvv} or @samp{-tvvv} to see information about the file.
+
+@item --verbose
+@itemx -v
+Verbose mode. Show the compression ratio for each file processed.
+Further -v's increase the verbosity level.
+
+@item -1 .. -9
+Set the compression parameters (dictionary size and match length limit)
+as shown in the table below. Note that @samp{-9} can be much slower than
+@samp{-1}. These options have no effect when decompressing.
+
+@multitable {Level} {Dictionary size} {Match length limit}
+@item Level @tab Dictionary size @tab Match length limit
+@item -1 @tab 1MiB @tab 10 bytes
+@item -2 @tab 1MiB @tab 12 bytes
+@item -3 @tab 1MiB @tab 17 bytes
+@item -4 @tab 2MiB @tab 26 bytes
+@item -5 @tab 4MiB @tab 44 bytes
+@item -6 @tab 8MiB @tab 80 bytes
+@item -7 @tab 16MiB @tab 108 bytes
+@item -8 @tab 16MiB @tab 163 bytes
+@item -9 @tab 32MiB @tab 273 bytes
+@end multitable
+
+@item --fast
+@itemx --best
+Aliases for GNU gzip compatibility.
+
+@end table
+
+@sp 1
+Numbers given as arguments to options may be followed by a multiplier
+and an optional @samp{B} for "byte".
+
+Table of SI and binary prefixes (unit multipliers):
+
+@multitable {Prefix} {kilobyte (10^3 = 1000)} {|} {Prefix} {kibibyte (2^10 = 1024)}
+@item Prefix @tab Value @tab | @tab Prefix @tab Value
+@item k @tab kilobyte (10^3 = 1000) @tab | @tab Ki @tab kibibyte (2^10 = 1024)
+@item M @tab megabyte (10^6) @tab | @tab Mi @tab mebibyte (2^20)
+@item G @tab gigabyte (10^9) @tab | @tab Gi @tab gibibyte (2^30)
+@item T @tab terabyte (10^12) @tab | @tab Ti @tab tebibyte (2^40)
+@item P @tab petabyte (10^15) @tab | @tab Pi @tab pebibyte (2^50)
+@item E @tab exabyte (10^18) @tab | @tab Ei @tab exbibyte (2^60)
+@item Z @tab zettabyte (10^21) @tab | @tab Zi @tab zebibyte (2^70)
+@item Y @tab yottabyte (10^24) @tab | @tab Yi @tab yobibyte (2^80)
+@end multitable
+
+
+@node File Format
+@chapter File Format
+@cindex file format
+
+In the diagram below, a box like this:
+@verbatim
++---+
+| | <-- the vertical bars might be missing
++---+
+@end verbatim
+
+represents one byte; a box like this:
+@verbatim
++==============+
+| |
++==============+
+@end verbatim
+
+represents a variable number of bytes.
+
+@sp 1
+A lzip file consists of a series of "members" (compressed data sets).
+The members simply appear one after another in the file, with no
+additional information before, between, or after them.
+
+Each member has the following structure:
+@verbatim
++--+--+--+--+----+----+=============+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+| ID string | VN | DS | Lzma stream | CRC32 | Data size | Member size |
++--+--+--+--+----+----+=============+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+@end verbatim
+
+All multibyte values are stored in little endian order.
+
+@table @samp
+@item ID string
+A four byte string, identifying the member type, with the value "LZIP".
+
+@item VN (version number, 1 byte)
+Just in case something needs to be modified in the future. Valid values
+are 0 and 1. Version 0 files have only one member and lack @samp{Member
+size}.
+
+@item DS (coded dictionary size, 1 byte)
+Bits 4-0 contain the base 2 logarithm of the base dictionary size.@*
+Bits 7-5 contain the number of "wedges" to substract from the base
+dictionary size to obtain the dictionary size. The size of a wedge is
+(base dictionary size / 16).@*
+Valid values for dictionary size range from 4KiB to 512MiB.
+
+@item Lzma stream
+The lzma stream, finished by an end of stream marker. Uses default values
+for encoder properties.
+
+@item CRC32 (4 bytes)
+CRC of the uncompressed original data.
+
+@item Data size (8 bytes)
+Size of the uncompressed original data.
+
+@item Member size (8 bytes)
+Total size of the member, including header and trailer. This facilitates
+safe recovery of undamaged members from multimember files.
+
+@end table
+
+
+@node Problems
+@chapter Reporting Bugs
+@cindex bugs
+@cindex getting help
+
+There are probably bugs in plzip. There are certainly errors and
+omissions in this manual. If you report them, they will get fixed. If
+you don't, no one will ever know about them and they will remain unfixed
+for all eternity, if not longer.
+
+If you find a bug in plzip, please send electronic mail to
+@email{lzip-bug@@nongnu.org}. Include the version number, which you can
+find by running @w{@samp{plzip --version}}.
+
+
+@node Concept Index
+@unnumbered Concept Index
+
+@printindex cp
+
+@bye
diff --git a/lacos_rbtree.cc b/lacos_rbtree.cc
new file mode 100644
index 0000000..14404c0
--- /dev/null
+++ b/lacos_rbtree.cc
@@ -0,0 +1,418 @@
+/* Plzip - A parallel version of the lzip data compressor
+ Copyright (C) 2009 Laszlo Ersek.
+ Copyright (C) 2009 Antonio Diaz Diaz.
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#define _FILE_OFFSET_BITS 64
+
+#include <cstddef>
+
+#include "lacos_rbtree.h"
+
+
+enum lacos_rbtree_color {
+ LACOS_RBTREE_RED,
+ LACOS_RBTREE_BLACK
+};
+
+struct lacos_rbtree_node {
+ void *data;
+ lacos_rbtree_node *parent,
+ *left,
+ *right;
+ lacos_rbtree_color color;
+};
+
+
+lacos_rbtree_node *
+lacos_rbtree_find( lacos_rbtree_node *root, const void *key,
+ int (*cmp)(const void *cmp_key, const void *cmp_data))
+{
+ int cmp_res;
+ while (root && (cmp_res = (*cmp)(key, root->data)))
+ root = cmp_res < 0 ? root->left : root->right;
+ return root;
+}
+
+
+lacos_rbtree_node *
+lacos_rbtree_min( lacos_rbtree_node *root)
+{
+ lacos_rbtree_node *tmp;
+
+ if (!root)
+ return 0;
+
+ while ((tmp = root->left))
+ root = tmp;
+
+ return root;
+}
+
+
+lacos_rbtree_node *
+lacos_rbtree_max( lacos_rbtree_node *root)
+{
+ lacos_rbtree_node *tmp;
+
+ if (!root)
+ return 0;
+
+ while ((tmp = root->right))
+ root = tmp;
+
+ return root;
+}
+
+
+lacos_rbtree_node *
+lacos_rbtree_next( lacos_rbtree_node *current)
+{
+ lacos_rbtree_node *tmp;
+
+ if (!current)
+ return 0;
+
+ if ((tmp = current->right)) {
+ while ((current = tmp->left))
+ tmp = current;
+ return tmp;
+ }
+
+ while ((tmp = current->parent) && current == tmp->right)
+ current = tmp;
+
+ return tmp;
+}
+
+
+lacos_rbtree_node *
+lacos_rbtree_prev( lacos_rbtree_node *current)
+{
+ lacos_rbtree_node *tmp;
+
+ if (!current)
+ return 0;
+
+ if ((tmp = current->left)) {
+ while ((current = tmp->right))
+ tmp = current;
+ return tmp;
+ }
+
+ while ((tmp = current->parent) && current == tmp->left)
+ current = tmp;
+
+ return tmp;
+}
+
+
+static void
+lacos_rbtree_rotate_left( lacos_rbtree_node **new_root,
+ lacos_rbtree_node *rotation_root)
+{
+ lacos_rbtree_node
+ *parent = rotation_root->parent,
+ *rc = rotation_root->right,
+ *rlc = rc->left;
+
+ rotation_root->right = rlc;
+ if (rlc)
+ rlc->parent = rotation_root;
+ rc->parent = parent;
+ if (parent)
+ if (rotation_root == parent->left)
+ parent->left = rc;
+ else
+ parent->right = rc;
+ else
+ *new_root = rc;
+ rc->left = rotation_root;
+ rotation_root->parent = rc;
+}
+
+
+static void
+lacos_rbtree_rotate_right( lacos_rbtree_node **new_root,
+ lacos_rbtree_node *rotation_root)
+{
+ lacos_rbtree_node
+ *parent = rotation_root->parent,
+ *lc = rotation_root->left,
+ *lrc = lc->right;
+
+ rotation_root->left = lrc;
+ if (lrc)
+ lrc->parent = rotation_root;
+ lc->parent = parent;
+ if (parent)
+ if (rotation_root == parent->left)
+ parent->left = lc;
+ else
+ parent->right = lc;
+ else
+ *new_root = lc;
+ lc->right = rotation_root;
+ rotation_root->parent = lc;
+}
+
+
+int
+lacos_rbtree_insert( lacos_rbtree_node **new_root,
+ lacos_rbtree_node **new_node, void *new_data,
+ int (*cmp)(const void *cmp_new_data, const void *cmp_data),
+ void *(*alloc)(size_t size, void *alloc_ctl), void *alloc_ctl)
+{
+ int cmp_res = 0;
+ lacos_rbtree_node *tmp = *new_root, *parent = 0;
+
+ while (tmp && (cmp_res = (*cmp)(new_data, tmp->data))) {
+ parent = tmp;
+ tmp = cmp_res < 0 ? tmp->left : tmp->right;
+ }
+
+ if (tmp) {
+ *new_node = tmp;
+ return -1;
+ }
+
+ if (!(*new_node = tmp = (lacos_rbtree_node *)(*alloc)(sizeof(lacos_rbtree_node),
+ alloc_ctl)))
+ return -1;
+
+ tmp->data = new_data;
+ tmp->parent = parent;
+ tmp->left = 0;
+ tmp->right = 0;
+ if (parent)
+ if (cmp_res < 0)
+ parent->left = tmp;
+ else
+ parent->right = tmp;
+ else {
+ *new_root = tmp;
+ tmp->color = LACOS_RBTREE_BLACK;
+ return 0;
+ }
+
+ {
+ lacos_rbtree_node *root = *new_root, *grandparent, *uncle;
+
+ tmp->color = LACOS_RBTREE_RED;
+
+ while (tmp != root && LACOS_RBTREE_RED == parent->color) {
+ grandparent = parent->parent;
+ if (parent == grandparent->left) {
+ uncle = grandparent->right;
+ if (uncle && LACOS_RBTREE_RED == uncle->color) {
+ parent->color = LACOS_RBTREE_BLACK;
+ uncle->color = LACOS_RBTREE_BLACK;
+ grandparent->color = LACOS_RBTREE_RED;
+ tmp = grandparent;
+ parent = tmp->parent;
+ }
+ else {
+ if (tmp == parent->right) {
+ tmp = parent;
+ lacos_rbtree_rotate_left(&root, tmp);
+ parent = tmp->parent;
+ grandparent = parent->parent;
+ }
+ parent->color = LACOS_RBTREE_BLACK;
+ grandparent->color = LACOS_RBTREE_RED;
+ lacos_rbtree_rotate_right(&root, grandparent);
+ }
+ }
+ else {
+ uncle = grandparent->left;
+ if (uncle && LACOS_RBTREE_RED == uncle->color) {
+ parent->color = LACOS_RBTREE_BLACK;
+ uncle->color = LACOS_RBTREE_BLACK;
+ grandparent->color = LACOS_RBTREE_RED;
+ tmp = grandparent;
+ parent = tmp->parent;
+ }
+ else {
+ if (tmp == parent->left) {
+ tmp = parent;
+ lacos_rbtree_rotate_right(&root, tmp);
+ parent = tmp->parent;
+ grandparent = parent->parent;
+ }
+ parent->color = LACOS_RBTREE_BLACK;
+ grandparent->color = LACOS_RBTREE_RED;
+ lacos_rbtree_rotate_left(&root, grandparent);
+ }
+ }
+ }
+
+ root->color = LACOS_RBTREE_BLACK;
+ *new_root = root;
+ }
+ return 0;
+}
+
+
+void
+lacos_rbtree_delete( lacos_rbtree_node **new_root,
+ lacos_rbtree_node *old_node, void **old_data,
+ void (*dealloc)(void *ptr, void *alloc_ctl), void *alloc_ctl)
+{
+ lacos_rbtree_node *child, *parent, *root = *new_root,
+ *old_node_left = old_node->left,
+ *old_node_right = old_node->right,
+ *old_node_parent = old_node->parent;
+ lacos_rbtree_color color_of_firstly_unlinked;
+
+ if (old_data)
+ *old_data = old_node->data;
+
+ if (old_node_left && old_node_right) {
+ lacos_rbtree_node
+ *to_relink = old_node_right,
+ *tmp = to_relink->left;
+
+ if (tmp) {
+ do {
+ to_relink = tmp;
+ tmp = tmp->left;
+ } while (tmp);
+ parent = to_relink->parent;
+ child = to_relink->right;
+ parent->left = child;
+ if (child)
+ child->parent = parent;
+ to_relink->right = old_node_right;
+ old_node_right->parent = to_relink;
+ }
+ else {
+ parent = old_node_right;
+ child = old_node_right->right;
+ }
+
+ to_relink->left = old_node_left;
+ old_node_left->parent = to_relink;
+
+ color_of_firstly_unlinked = to_relink->color;
+ to_relink->color = old_node->color;
+
+ to_relink->parent = old_node_parent;
+
+ if (old_node_parent)
+ if (old_node == old_node_parent->left)
+ old_node_parent->left = to_relink;
+ else
+ old_node_parent->right = to_relink;
+ else
+ root = to_relink;
+ }
+ else {
+ parent = old_node_parent;
+ child = old_node_left ? old_node_left : old_node_right;
+ color_of_firstly_unlinked = old_node->color;
+
+ if (child)
+ child->parent = parent;
+ if (old_node_parent)
+ if (old_node == old_node_parent->left)
+ old_node_parent->left = child;
+ else
+ old_node_parent->right = child;
+ else
+ root = child;
+ }
+
+ (*dealloc)(old_node, alloc_ctl);
+
+ if (LACOS_RBTREE_BLACK == color_of_firstly_unlinked) {
+ lacos_rbtree_node *brother, *left_nephew, *right_nephew;
+ int left_black, right_black;
+
+ while (child != root && (!child || LACOS_RBTREE_BLACK == child->color))
+ if (child == parent->left) {
+ brother = parent->right;
+ if (LACOS_RBTREE_RED == brother->color) {
+ brother->color = LACOS_RBTREE_BLACK;
+ parent->color = LACOS_RBTREE_RED;
+ lacos_rbtree_rotate_left(&root, parent);
+ brother = parent->right;
+ }
+ left_nephew = brother->left;
+ right_nephew = brother->right;
+ right_black = !right_nephew
+ || LACOS_RBTREE_BLACK == right_nephew->color;
+ if ((!left_nephew || LACOS_RBTREE_BLACK == left_nephew->color)
+ && right_black) {
+ brother->color = LACOS_RBTREE_RED;
+ child = parent;
+ parent = parent->parent;
+ }
+ else {
+ if (right_black) {
+ left_nephew->color = LACOS_RBTREE_BLACK;
+ brother->color = LACOS_RBTREE_RED;
+ lacos_rbtree_rotate_right(&root, brother);
+ brother = parent->right;
+ right_nephew = brother->right;
+ }
+ brother->color = parent->color;
+ parent->color = LACOS_RBTREE_BLACK;
+ right_nephew->color = LACOS_RBTREE_BLACK;
+ lacos_rbtree_rotate_left(&root, parent);
+ child = root;
+ break;
+ }
+ }
+ else {
+ brother = parent->left;
+ if (LACOS_RBTREE_RED == brother->color) {
+ brother->color = LACOS_RBTREE_BLACK;
+ parent->color = LACOS_RBTREE_RED;
+ lacos_rbtree_rotate_right(&root, parent);
+ brother = parent->left;
+ }
+ right_nephew = brother->right;
+ left_nephew = brother->left;
+ left_black = !left_nephew || LACOS_RBTREE_BLACK == left_nephew->color;
+ if ((!right_nephew || LACOS_RBTREE_BLACK == right_nephew->color)
+ && left_black) {
+ brother->color = LACOS_RBTREE_RED;
+ child = parent;
+ parent = parent->parent;
+ }
+ else {
+ if (left_black) {
+ right_nephew->color = LACOS_RBTREE_BLACK;
+ brother->color = LACOS_RBTREE_RED;
+ lacos_rbtree_rotate_left(&root, brother);
+ brother = parent->left;
+ left_nephew = brother->left;
+ }
+ brother->color = parent->color;
+ parent->color = LACOS_RBTREE_BLACK;
+ left_nephew->color = LACOS_RBTREE_BLACK;
+ lacos_rbtree_rotate_right(&root, parent);
+ child = root;
+ break;
+ }
+ }
+
+ if (child)
+ child->color = LACOS_RBTREE_BLACK;
+ }
+
+ *new_root = root;
+}
diff --git a/lacos_rbtree.h b/lacos_rbtree.h
new file mode 100644
index 0000000..1945233
--- /dev/null
+++ b/lacos_rbtree.h
@@ -0,0 +1,249 @@
+/* Plzip - A parallel version of the lzip data compressor
+ Copyright (C) 2009 Laszlo Ersek.
+ Copyright (C) 2009 Antonio Diaz Diaz.
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+struct lacos_rbtree_node;
+/*
+ Opaque data type for red-black binary tree nodes. To get its data pointer,
+ cast a (struct lacos_rbtree_node *) object to (void **) and derefer it once.
+ Empty trees equal to (struct lacos_rbtree_node *)0.
+
+ This group of functions is generally not thread-safe (although it doesn't use
+ any static data), because the non-read-only operations must exclude all
+ operations on the same tree via external locking in a multi-threaded
+ environment.
+
+ If you want to alter the (your own) "key" field in an element, you mustn't do
+ that in one step. It must involve one delete and one insert operation, in the
+ order of your choice. Delete-insert is probably faster than insert-delete.
+*/
+
+
+/*
+ The functions below all return and mainly take pointers to nodes, not
+ elements (pointers to void). However, for simplicity of language, they are
+ described as if they operated on pointers to void (elements).
+*/
+
+
+lacos_rbtree_node *
+lacos_rbtree_find( lacos_rbtree_node *root, const void *key,
+ int (*cmp)(const void *cmp_key, const void *cmp_data));
+/*
+ USAGE:
+ Find an element in the tree.
+
+ ARGUMENTS:
+ root:
+ Root of the tree.
+
+ key:
+ This specifies which element should be found. This doesn't need to be an
+ element, it can be a standalone key too, if you write the "cmp" function
+ accordingly.
+
+ cmp:
+ A function which should return an integer less than, equal to, or greater
+ than zero if the "key" argument compares less than, equal to, or greater
+ than the currently inspected element in the tree.
+
+ RETURN VALUE:
+ If the key is found, this function returns the element (actually the
+ address of the containing node). If it is not found, 0 is returned.
+
+ READ-ONLY OPERATION:
+ Yes.
+*/
+
+
+lacos_rbtree_node *
+lacos_rbtree_min( lacos_rbtree_node *root);
+/*
+ USAGE:
+ Get the smallest element in the tree.
+
+ ARGUMENTS:
+ root:
+ Root of the tree.
+
+ RETURN VALUE:
+ If the tree is empty ("root" is null), 0 is returned. Otherwise, the
+ smallest element is returned.
+
+ READ-ONLY OPERATION:
+ Yes.
+*/
+
+
+lacos_rbtree_node *
+lacos_rbtree_max( lacos_rbtree_node *root);
+/*
+ USAGE:
+ Get the greatest element in the tree.
+
+ ARGUMENTS:
+ root:
+ Root of the tree.
+
+ RETURN VALUE:
+ If the tree is empty ("root" is null), 0 is returned. Otherwise, the
+ greatest element is returned.
+
+ READ-ONLY OPERATION:
+ Yes.
+*/
+
+
+lacos_rbtree_node *
+lacos_rbtree_next( lacos_rbtree_node *current);
+/*
+ USAGE:
+ Get the smallest element greater than "current".
+
+ ARGUMENTS:
+ current:
+ An element.
+
+ RETURN VALUE:
+ If "current" is null or the last element in the tree, 0 is returned.
+ Otherwise, the smallest element greater than "current" is returned.
+
+ READ-ONLY OPERATION:
+ Yes.
+*/
+
+
+lacos_rbtree_node *
+lacos_rbtree_prev( lacos_rbtree_node *current);
+/*
+ USAGE:
+ Get the greatest element smaller than "current".
+
+ ARGUMENTS:
+ current:
+ An element.
+
+ RETURN VALUE:
+ If "current" is null or the first element in the tree, 0 is returned.
+ Otherwise, the greatest element smaller than "current" is returned.
+
+ READ-ONLY OPERATION:
+ Yes.
+*/
+
+
+int
+lacos_rbtree_insert( lacos_rbtree_node **new_root,
+ lacos_rbtree_node **new_node, void *new_data,
+ int (*cmp)(const void *cmp_new_data, const void *cmp_data),
+ void *(*alloc)(size_t size, void *alloc_ctl), void *alloc_ctl);
+/*
+ USAGE:
+ Insert an element into the tree.
+
+ ARGUMENTS:
+ new_root:
+ Address of the tree's root; "*new_root" is the root of the tree. Both
+ input and output.
+
+ new_node:
+ Output only.
+
+ new_data:
+ The data to insert. This must not be a standalone key, this must be a
+ full element. It will only be linked in, not copied.
+
+ cmp:
+ A function which should return an integer less than, equal to, or greater
+ than zero if the "new_data" argument compares less than, equal to, or
+ greater than the currently inspected element in the tree.
+
+ alloc:
+ A memory allocator function whose externally observable behavior is
+ consistent with that of "malloc". It must work together with the
+ "dealloc" function passed to "lacos_rbtree_delete".
+
+ alloc_ctl:
+ A pointer to a custom data type to supply the "alloc" function with
+ optional auxiliary control information (arena etc).
+
+ RETURN VALUE:
+ If the insertion succeeds, 0 is returned, the new element is stored into
+ "*new_node", and "*new_root" is updated to the new root of the tree.
+
+ Otherwise, "*new_root" is not modified, and -1 is returned because of one
+ of the following errors:
+
+ - An element with a colliding key was found in the tree. In this case, the
+ colliding element is stored into "*new_node".
+ - There was not enough memory to allocate a new node object. In this case,
+ 0 is stored into "*new_node".
+
+ Existing node pointers remain valid in any case.
+
+ READ-ONLY OPERATION:
+ No.
+*/
+
+
+void
+lacos_rbtree_delete( lacos_rbtree_node **new_root,
+ lacos_rbtree_node *old_node, void **old_data,
+ void (*dealloc)(void *ptr, void *alloc_ctl), void *alloc_ctl);
+/*
+ USAGE:
+ Remove an element from the tree.
+
+ ARGUMENTS:
+ new_root:
+ Address of the tree's root; "*new_root" is the root of the tree. Both
+ input and output.
+
+ old_node:
+ The element to remove. This must be a valid node pointer into the tree.
+
+ old_data:
+ The deleted element (the data of the deleted node, which was specified by
+ the "new_data" argument of the corresponding "lacos_rbtree_insert" call).
+ You could get the data also through "*(void **)old_node" before calling
+ this function. The data pointer of the node to delete is only accessed
+ and stored into "*old_data" if "old_data" is not 0.
+
+ dealloc:
+ A memory deallocator function whose externally observable behavior is
+ consistent with that of "free". It must work together with the "alloc"
+ function passed to "lacos_rbtree_insert".
+
+ alloc_ctl:
+ A pointer to a custom data type to supply the "dealloc" function with
+ optional auxiliary control information (arena etc).
+
+ Existing node pointers different from "old_node" remain valid.
+
+ READ-ONLY OPERATION:
+ No.
+*/
+
+
+#ifdef __cplusplus
+}
+#endif
diff --git a/main.cc b/main.cc
new file mode 100644
index 0000000..b2bf014
--- /dev/null
+++ b/main.cc
@@ -0,0 +1,1300 @@
+/* Plzip - A parallel version of the lzip data compressor
+ Copyright (C) 2009 Laszlo Ersek.
+ Copyright (C) 2009 Antonio Diaz Diaz.
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+/*
+ Return values: 0 for a normal exit, 1 for environmental problems
+ (file not found, invalid flags, I/O errors, etc), 2 to indicate a
+ corrupt or invalid input file, 3 for an internal consistency error
+ (eg, bug) which caused plzip to panic.
+*/
+
+#define _FILE_OFFSET_BITS 64
+
+#include <algorithm>
+#include <cassert>
+#include <cerrno>
+#include <climits>
+#include <csignal>
+#include <cstdarg> /* va_list */
+#include <cstddef>
+#include <cstdio> /* flockfile() */
+#include <cstdlib>
+#include <cstring> /* strerror() */
+#include <string>
+#include <vector>
+#include <fcntl.h> /* open() */
+#include <stdint.h>
+#include <pthread.h>
+#include <unistd.h>
+#include <utime.h>
+#include <sys/stat.h>
+#include <lzlib.h>
+
+#if CHAR_BIT != 8
+# error "Environments where CHAR_BIT != 8 are not supported."
+#endif
+
+#include "arg_parser.h"
+#include "main.h"
+#include "plzip.h"
+
+#ifndef LLONG_MAX
+#define LLONG_MAX 0x7FFFFFFFFFFFFFFFLL
+#endif
+#ifndef LLONG_MIN
+#define LLONG_MIN (-LLONG_MAX - 1LL)
+#endif
+#ifndef ULLONG_MAX
+#define ULLONG_MAX 0xFFFFFFFFFFFFFFFFULL
+#endif
+
+void internal_error( const char * msg );
+int readblock( const int fd, char * buf, const int size ) throw();
+int writeblock( const int fd, const char * buf, const int size ) throw();
+
+
+namespace {
+
+const char * invocation_name = 0;
+const char * const Program_name = "Plzip";
+const char * const program_name = "plzip";
+const char * const program_year = "2009";
+
+struct { const char * from; const char * to; } const known_extensions[] = {
+ { ".lz", "" },
+ { ".tlz", ".tar" },
+ { 0, 0 } };
+
+struct lzma_options
+ {
+ int dictionary_size; // 4KiB..512MiB
+ int match_len_limit; // 5..273
+ };
+
+enum Mode { m_compress = 0, m_decompress, m_test };
+
+std::string output_filename;
+int outhandle = -1;
+int verbosity = 0;
+bool delete_output_on_interrupt = false;
+
+class Pretty_print
+ {
+ const char * const stdin_name;
+ const unsigned int stdin_name_len;
+ unsigned int longest_name;
+ std::string name_;
+ mutable bool first_post;
+
+public:
+ Pretty_print( const std::vector< std::string > & filenames )
+ : stdin_name( "(stdin)" ), stdin_name_len( std::strlen( stdin_name ) ),
+ longest_name( 0 ), first_post( false )
+ {
+ for( unsigned int i = 0; i < filenames.size(); ++i )
+ {
+ const std::string & s = filenames[i];
+ const unsigned int len = ( ( s == "-" ) ? stdin_name_len : s.size() );
+ if( len > longest_name ) longest_name = len;
+ }
+ if( longest_name == 0 ) longest_name = stdin_name_len;
+ }
+
+ void set_name( const std::string & filename )
+ {
+ if( filename.size() && filename != "-" ) name_ = filename;
+ else name_ = stdin_name;
+ first_post = true;
+ }
+
+ void reset() const throw() { if( name_.size() ) first_post = true; }
+ const char * name() const throw() { return name_.c_str(); }
+ void operator()( const char * const msg = 0 ) const throw();
+ };
+
+
+void show_help() throw()
+ {
+ std::printf( "%s - A parallel version of the lzip data compressor.\n", Program_name );
+ std::printf( "\nUsage: %s [options] [files]\n", invocation_name );
+ std::printf( "\nOptions:\n" );
+ std::printf( " -h, --help display this help and exit\n" );
+ std::printf( " -V, --version output version information and exit\n" );
+// std::printf( " -b, --member-size=<n> set member size limit in bytes\n" );
+ std::printf( " -c, --stdout send output to standard output\n" );
+ std::printf( " -d, --decompress decompress\n" );
+// std::printf( " -f, --force overwrite existing output files\n" );
+// std::printf( " -k, --keep keep (don't delete) input files\n" );
+// std::printf( " -m, --match-length=<n> set match length limit in bytes [80]\n" );
+ std::printf( " -n, --threads=<n> set the number of (de)compression threads\n" );
+// std::printf( " -o, --output=<file> if reading stdin, place the output into <file>\n" );
+ std::printf( " -q, --quiet suppress all messages\n" );
+// std::printf( " -s, --dictionary-size=<n> set dictionary size limit in bytes [8MiB]\n" );
+// std::printf( " -S, --volume-size=<n> set volume size limit in bytes\n" );
+ std::printf( " -t, --test test compressed file integrity\n" );
+ std::printf( " -v, --verbose be verbose (a 2nd -v gives more)\n" );
+ std::printf( " -1 .. -9 set compression level [default 6]\n" );
+ std::printf( " --fast alias for -1\n" );
+ std::printf( " --best alias for -9\n" );
+ if( verbosity > 0 )
+ {
+ std::printf( " -D, --debug=<level> (0-3) print debug statistics to stderr\n" );
+ }
+ std::printf( "If no file names are given, %s compresses or decompresses\n", program_name );
+ std::printf( "from standard input to standard output.\n" );
+ std::printf( "Numbers may be followed by a multiplier: k = kB = 10^3 = 1000,\n" );
+ std::printf( "Ki = KiB = 2^10 = 1024, M = 10^6, Mi = 2^20, G = 10^9, Gi = 2^30, etc...\n" );
+ std::printf( "\nReport bugs to lzip-bug@nongnu.org\n" );
+ std::printf( "Lzip home page: http://www.nongnu.org/lzip/lzip.html\n" );
+ }
+
+
+void show_version() throw()
+ {
+ std::printf( "%s %s\n", Program_name, PROGVERSION );
+ std::printf( "Copyright (C) 2009 Laszlo Ersek.\n" );
+ std::printf( "Copyright (C) %s Antonio Diaz Diaz.\n", program_year );
+ std::printf( "License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\n" );
+ std::printf( "This is free software: you are free to change and redistribute it.\n" );
+ std::printf( "There is NO WARRANTY, to the extent permitted by law.\n" );
+ }
+
+
+long long getnum( const char * ptr, const int bs = 0,
+ const long long llimit = LLONG_MIN + 1,
+ const long long ulimit = LLONG_MAX ) throw()
+ {
+ errno = 0;
+ char *tail;
+ long long result = strtoll( ptr, &tail, 0 );
+ if( tail == ptr )
+ {
+ show_error( "bad or missing numerical argument", 0, true );
+ std::exit( 1 );
+ }
+
+ if( !errno && tail[0] )
+ {
+ int factor = ( tail[1] == 'i' ) ? 1024 : 1000;
+ int exponent = 0;
+ bool bad_multiplier = false;
+ switch( tail[0] )
+ {
+ case ' ': break;
+ case 'b': if( bs > 0 ) { factor = bs; exponent = 1; }
+ else bad_multiplier = true;
+ break;
+ case 'Y': exponent = 8; break;
+ case 'Z': exponent = 7; break;
+ case 'E': exponent = 6; break;
+ case 'P': exponent = 5; break;
+ case 'T': exponent = 4; break;
+ case 'G': exponent = 3; break;
+ case 'M': exponent = 2; break;
+ case 'K': if( factor == 1024 ) exponent = 1; else bad_multiplier = true;
+ break;
+ case 'k': if( factor == 1000 ) exponent = 1; else bad_multiplier = true;
+ break;
+ default: bad_multiplier = true;
+ }
+ if( bad_multiplier )
+ {
+ show_error( "bad multiplier in numerical argument", 0, true );
+ std::exit( 1 );
+ }
+ for( int i = 0; i < exponent; ++i )
+ {
+ if( LLONG_MAX / factor >= llabs( result ) ) result *= factor;
+ else { errno = ERANGE; break; }
+ }
+ }
+ if( !errno && ( result < llimit || result > ulimit ) ) errno = ERANGE;
+ if( errno )
+ {
+ show_error( "numerical argument out of limits" );
+ std::exit( 1 );
+ }
+ return result;
+ }
+
+
+int get_dict_size( const char * arg ) throw()
+ {
+ char *tail;
+ int bits = std::strtol( arg, &tail, 0 );
+ if( bits >= min_dictionary_bits && bits <= max_dictionary_bits && *tail == 0 )
+ return ( 1 << bits );
+ return getnum( arg, 0, min_dictionary_size, max_dictionary_size );
+ }
+
+
+int extension_index( const std::string & name ) throw()
+ {
+ for( int i = 0; known_extensions[i].from; ++i )
+ {
+ const std::string ext( known_extensions[i].from );
+ if( name.size() > ext.size() &&
+ name.compare( name.size() - ext.size(), ext.size(), ext ) == 0 )
+ return i;
+ }
+ return -1;
+ }
+
+
+int open_instream( const std::string & name, struct stat * in_statsp,
+ const Mode program_mode, const int eindex,
+ const bool force, const bool to_stdout ) throw()
+ {
+ int inhandle = -1;
+ if( program_mode == m_compress && !force && eindex >= 0 )
+ {
+ if( verbosity >= 0 )
+ std::fprintf( stderr, "%s: input file `%s' already has `%s' suffix.\n",
+ program_name, name.c_str(),
+ known_extensions[eindex].from );
+ }
+ else
+ {
+ inhandle = open( name.c_str(), O_RDONLY );
+ if( inhandle < 0 )
+ {
+ if( verbosity >= 0 )
+ std::fprintf( stderr, "%s: Can't open input file `%s': %s.\n",
+ program_name, name.c_str(), std::strerror( errno ) );
+ }
+ else
+ {
+ const int i = fstat( inhandle, in_statsp );
+ const mode_t & mode = in_statsp->st_mode;
+ if( i < 0 || !( S_ISREG( mode ) || ( to_stdout &&
+ ( S_ISFIFO( mode ) || S_ISSOCK( mode ) ||
+ S_ISBLK( mode ) || S_ISCHR( mode ) ) ) ) )
+ {
+ if( verbosity >= 0 )
+ std::fprintf( stderr, "%s: input file `%s' is not a regular file%s.\n",
+ program_name, name.c_str(),
+ to_stdout ? "" : " and `--stdout' was not specified" );
+ close( inhandle );
+ inhandle = -1;
+ }
+ }
+ }
+ return inhandle;
+ }
+
+
+void set_c_outname( const std::string & name ) throw()
+ {
+ output_filename = name;
+ output_filename += known_extensions[0].from;
+ }
+
+
+void set_d_outname( const std::string & name, const int i ) throw()
+ {
+ if( i >= 0 )
+ {
+ const std::string from( known_extensions[i].from );
+ if( name.size() > from.size() )
+ {
+ output_filename.assign( name, 0, name.size() - from.size() );
+ output_filename += known_extensions[i].to;
+ return;
+ }
+ }
+ output_filename = name; output_filename += ".out";
+ if( verbosity >= 0 )
+ std::fprintf( stderr, "%s: can't guess original name for `%s' -- using `%s'.\n",
+ program_name, name.c_str(), output_filename.c_str() );
+ }
+
+
+bool open_outstream( const bool force ) throw()
+ {
+ if( force )
+ outhandle = open( output_filename.c_str(), O_CREAT | O_TRUNC | O_WRONLY,
+ S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH );
+ else outhandle = open( output_filename.c_str(), O_CREAT | O_EXCL | O_WRONLY,
+ S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH );
+ if( outhandle < 0 )
+ {
+ if( errno == EEXIST ) outhandle = -2; else outhandle = -1;
+ if( verbosity >= 0 )
+ {
+ if( outhandle == -2 )
+ std::fprintf( stderr, "%s: Output file %s already exists, skipping.\n",
+ program_name, output_filename.c_str() );
+ else
+ std::fprintf( stderr, "%s: Can't create output file `%s': %s.\n",
+ program_name, output_filename.c_str(), std::strerror( errno ) );
+ }
+ }
+ return ( outhandle >= 0 );
+ }
+
+
+bool check_tty( const int inhandle, const Mode program_mode ) throw()
+ {
+ if( program_mode == m_compress && isatty( outhandle ) )
+ {
+ show_error( "I won't write compressed data to a terminal.", 0, true );
+ return false;
+ }
+ if( ( program_mode == m_decompress || program_mode == m_test ) &&
+ isatty( inhandle ) )
+ {
+ show_error( "I won't read compressed data from a terminal.", 0, true );
+ return false;
+ }
+ return true;
+ }
+
+
+void cleanup_and_fail( const int retval ) throw()
+ {
+ if( delete_output_on_interrupt )
+ {
+ if( verbosity >= 0 )
+ std::fprintf( stderr, "%s: Deleting output file `%s', if it exists.\n",
+ program_name, output_filename.c_str() );
+ if( outhandle >= 0 ) { close( outhandle ); outhandle = -1; }
+ if( std::remove( output_filename.c_str() ) != 0 )
+ show_error( "WARNING: deletion of output file (apparently) failed." );
+ }
+ std::exit( retval );
+ }
+
+
+ // Set permissions, owner and times.
+void close_and_set_permissions( const struct stat * in_statsp, int * retvalp )
+ {
+ int tmp = 0;
+ if( in_statsp )
+ {
+ if( fchmod( outhandle, in_statsp->st_mode ) != 0 ) tmp = 1;
+ if( !tmp ) (void)fchown( outhandle, in_statsp->st_uid, in_statsp->st_gid );
+ // fchown will in many cases return with EPERM, which can be safely ignored.
+ }
+ if( close( outhandle ) == 0 ) outhandle = -1;
+ else cleanup_and_fail( 1 );
+ delete_output_on_interrupt = false;
+ if( !in_statsp ) return;
+ if( !tmp )
+ {
+ struct utimbuf t;
+ t.actime = in_statsp->st_atime;
+ t.modtime = in_statsp->st_mtime;
+ if( utime( output_filename.c_str(), &t ) != 0 ) tmp = 1;
+ }
+ if( tmp )
+ {
+ if( tmp > *retvalp ) *retvalp = tmp;
+ show_error( "I can't change output file attributes." );
+ cleanup_and_fail( *retvalp );
+ }
+ }
+
+
+int decompress( const int inhandle, const Pretty_print & pp,
+ const bool testing )
+ {
+ void * decoder = LZ_decompress_open();
+ if( !decoder || LZ_decompress_errno( decoder ) != LZ_ok )
+ {
+ LZ_decompress_close( decoder );
+ pp( "not enough memory. Find a machine with more memory" );
+ return 1;
+ }
+ if( verbosity >= 1 ) pp();
+
+ const int in_buffer_size = 65536, out_buffer_size = 8 * in_buffer_size;
+ uint8_t in_buffer[in_buffer_size], out_buffer[out_buffer_size];
+ int in_pos = 0, in_stream_pos = 0;
+ bool finished = false;
+ while( true )
+ {
+ int in_size = 0;
+ if( !finished )
+ {
+ if( in_stream_pos == 0 )
+ in_stream_pos = readblock( inhandle, (char *)in_buffer, in_buffer_size );
+ if( in_pos < in_stream_pos )
+ {
+ in_size = LZ_decompress_write( decoder, in_buffer + in_pos, in_stream_pos - in_pos );
+ in_pos += in_size;
+ }
+ if( in_pos >= in_stream_pos )
+ {
+ if( in_stream_pos < in_buffer_size )
+ { finished = true; LZ_decompress_finish( decoder ); }
+ in_stream_pos = 0; in_pos = 0;
+ }
+ }
+ int out_size = LZ_decompress_read( decoder, out_buffer, out_buffer_size );
+// std::fprintf( stderr, "%5d in_size, %6d out_size.\n", in_size, out_size );
+ if( out_size < 0 )
+ {
+ const LZ_errno lz_errno = LZ_decompress_errno( decoder );
+ if( lz_errno == LZ_header_error )
+ {
+ if( LZ_decompress_total_out_size( decoder ) > 0 )
+ break; // trailing garbage
+ pp( "error reading member header" );
+ return 1;
+ }
+ if( lz_errno == LZ_mem_error )
+ {
+ pp( "not enough memory. Find a machine with more memory" );
+ return 1;
+ }
+ if( lz_errno == LZ_unexpected_eof )
+ {
+ if( verbosity >= 0 )
+ { pp();
+ std::fprintf( stderr, "file ends unexpectedly at pos %lld\n",
+ LZ_decompress_total_in_size( decoder ) ); }
+ return 2;
+ }
+ pp(); show_error( "read error", errno ); return 1;
+ }
+ else if( out_size > 0 && outhandle >= 0 )
+ {
+ const int wr = writeblock( outhandle, (char *)out_buffer, out_size );
+ if( wr != out_size )
+ { pp(); show_error( "write error", errno ); return 1; }
+ }
+ if( LZ_decompress_finished( decoder ) == 1 ) break;
+ if( finished && in_size == 0 && out_size == 0 )
+ internal_error( "library error (LZ_decompress_read)" );
+ }
+ if( verbosity >= 1 )
+ { if( testing ) std::fprintf( stderr, "ok\n" );
+ else std::fprintf( stderr, "done\n" ); }
+ LZ_decompress_close( decoder );
+ return 0;
+ }
+
+
+extern "C" void signal_handler( int ) throw()
+ {
+ show_error( "Control-C or similar caught, quitting." );
+ cleanup_and_fail( 1 );
+ }
+
+
+void set_signals() throw()
+ {
+ signal( SIGHUP, signal_handler );
+ signal( SIGINT, signal_handler );
+ signal( SIGTERM, signal_handler );
+ }
+
+} // end namespace
+
+
+void Pretty_print::operator()( const char * const msg ) const throw()
+ {
+ if( verbosity >= 0 )
+ {
+ if( first_post )
+ {
+ first_post = false;
+ std::fprintf( stderr, " %s: ", name_.c_str() );
+ for( unsigned int i = 0; i < longest_name - name_.size(); ++i )
+ std::fprintf( stderr, " " );
+ if( !msg ) std::fflush( stderr );
+ }
+ if( msg ) std::fprintf( stderr, "%s.\n", msg );
+ }
+ }
+
+
+/* Private stuff needed by fatal(). */
+static pthread_t main_thread;
+
+static pid_t pid;
+
+
+/* Public utility variables and functions. */
+void *(*mallocf)(size_t size);
+void (*freef)(void *ptr);
+
+
+/*
+ This can be called from any thread, main thread or sub-threads alike, since
+ they all call common helper functions that call fatal() in case of an error.
+*/
+void
+fatal(void)
+{
+ if( pthread_equal(pthread_self(), main_thread) )
+ cleanup_and_fail( 1 );
+ else
+ {
+ if (0 == kill(pid, SIGUSR1))
+ pthread_exit(0);
+ }
+ _exit(EXIT_FAILURE);
+}
+
+
+void
+fail(const char *fmt, int err, ...)
+{
+ va_list args;
+
+ /* Locking stderr should also protect strerror(). */
+ flockfile(stderr);
+ (void)fprintf(stderr, "%s: ", program_name);
+
+ va_start(args, err);
+ (void)vfprintf(stderr, fmt, args);
+ va_end(args);
+
+ (void)fprintf(stderr, ": %s\n", strerror(err));
+ funlockfile(stderr);
+ /* Stream stderr is never fully buffered originally. */
+ fatal();
+}
+
+
+void *
+xalloc(size_t size)
+{
+ void *ret = (*mallocf)(size);
+
+ if (0 == ret) {
+ fail("(*mallocf)()", errno);
+ }
+
+ return ret;
+}
+
+
+void
+xinit(Cond *cond)
+{
+ int ret;
+ pthread_mutexattr_t attr;
+
+ ret = pthread_mutexattr_init(&attr);
+ if (0 != ret) {
+ fail("pthread_mutexattr_init()", ret);
+ }
+
+ ret = pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_ERRORCHECK);
+ if (0 != ret) {
+ fail("pthread_mutexattr_settype()", ret);
+ }
+
+ ret = pthread_mutex_init(&cond->lock, &attr);
+ if (0 != ret) {
+ fail("pthread_mutex_init()", ret);
+ }
+
+ ret = pthread_mutexattr_destroy(&attr);
+ if (0 != ret) {
+ fail("pthread_mutexattr_destroy()", ret);
+ }
+
+ ret = pthread_cond_init(&cond->cond, 0);
+ if (0 != ret) {
+ fail("pthread_cond_init()", ret);
+ }
+
+ cond->ccount = 0lu;
+ cond->wcount = 0lu;
+}
+
+
+void
+xdestroy(Cond *cond)
+{
+ int ret;
+
+ ret = pthread_cond_destroy(&cond->cond);
+ if (0 != ret) {
+ fail("pthread_cond_destroy()", ret);
+ }
+
+ ret = pthread_mutex_destroy(&cond->lock);
+ if (0 != ret) {
+ fail("pthread_mutex_destroy()", ret);
+ }
+}
+
+
+void
+xlock(Cond *cond)
+{
+ int ret;
+
+ ret = pthread_mutex_lock(&cond->lock);
+ if (0 != ret) {
+ fail("pthread_mutex_lock()", ret);
+ }
+}
+
+
+void
+xlock_pred(Cond *cond)
+{
+ xlock(cond);
+ ++cond->ccount;
+}
+
+
+void
+xunlock(Cond *cond)
+{
+ int ret;
+
+ ret = pthread_mutex_unlock(&cond->lock);
+ if (0 != ret) {
+ fail("pthread_mutex_unlock()", ret);
+ }
+}
+
+
+void
+xwait(Cond *cond)
+{
+ int ret;
+
+ ++cond->wcount;
+ ret = pthread_cond_wait(&cond->cond, &cond->lock);
+ if (0 != ret) {
+ fail("pthread_cond_wait()", ret);
+ }
+ ++cond->ccount;
+}
+
+
+void
+xsignal(Cond *cond)
+{
+ int ret;
+
+ ret = pthread_cond_signal(&cond->cond);
+ if (0 != ret) {
+ fail("pthread_cond_signal()", ret);
+ }
+}
+
+
+void
+xbroadcast(Cond *cond)
+{
+ int ret;
+
+ ret = pthread_cond_broadcast(&cond->cond);
+ if (0 != ret) {
+ fail("pthread_cond_broadcast()", ret);
+ }
+}
+
+
+void
+xcreate(pthread_t *thread, void *(*routine)(void *), void *arg)
+{
+ int ret;
+
+ ret = pthread_create(thread, 0, routine, arg);
+ if (0 != ret) {
+ fail("pthread_create()", ret);
+ }
+}
+
+
+void
+xjoin(pthread_t thread)
+{
+ int ret;
+
+ ret = pthread_join(thread, 0);
+ if (0 != ret) {
+ fail("pthread_join()", ret);
+ }
+}
+
+
+void
+xraise(int sig)
+{
+ if (-1 == kill(pid, sig)) {
+ fail("kill()", errno);
+ }
+}
+
+
+/* Private stuff part 2. */
+
+struct Opts
+{
+ unsigned num_worker; /* Start this many worker threads. */
+ unsigned clidx; /* Compression level index in [0u .. 8u]. */
+ int print_cctrs; /* Print condition variable counters. */
+};
+
+/* Backlog factor for all workers together. */
+static const unsigned blf = 3u;
+
+/* Separator characters in environment variable values. No escaping. */
+static const char envsep[] = " \t";
+
+
+static void *
+trace_malloc(size_t size)
+{
+ void *ret;
+ int save_errno = 0;
+
+ ret = malloc(size);
+ if (0 == ret) {
+ save_errno = errno;
+ }
+
+ if (0 > fprintf(stderr, "%lu: malloc(%lu) == %p\n", (long unsigned)pid,
+ (long unsigned)size, ret)
+ ) {
+ fatal();
+ }
+
+ if (0 == ret) {
+ errno = save_errno;
+ }
+
+ return ret;
+}
+
+
+static void
+trace_free(void *ptr)
+{
+ if (0 > fprintf(stderr, "%lu: free(%p)\n", (long unsigned)pid, ptr)) {
+ fatal();
+ }
+ free(ptr);
+}
+
+
+static void
+xsigemptyset(sigset_t *set)
+{
+ if (-1 == sigemptyset(set)) {
+ fail("sigemptyset()", errno);
+ }
+}
+
+
+static void
+xsigaddset(sigset_t *set, int signo)
+{
+ if (-1 == sigaddset(set, signo)) {
+ fail("sigaddset()", errno);
+ }
+}
+
+
+static void
+xsigmask(int how, const sigset_t *set, sigset_t *oset)
+{
+ int ret;
+
+ ret = pthread_sigmask(how, set, oset);
+ if (0 != ret) {
+ fail("pthread_sigmask()", ret);
+ }
+}
+
+
+static void
+xsigaction(int sig, void (*handler)(int))
+{
+ struct sigaction act;
+
+ act.sa_handler = handler;
+ xsigemptyset(&act.sa_mask);
+ act.sa_flags = 0;
+
+ if (-1 == sigaction(sig, &act, 0)) {
+ fail("sigaction()", errno);
+ }
+}
+
+
+enum caught_sig
+{
+ CS_INT = 1,
+ CS_TERM,
+ CS_USR1,
+ CS_USR2
+};
+
+static volatile sig_atomic_t caught_sig;
+
+
+static void
+sighandler(int sig)
+{
+ /* sig_atomic_t is nowhere required to be able to hold signal values. */
+ switch (sig) {
+ case SIGINT:
+ caught_sig = CS_INT;
+ break;
+
+ case SIGTERM:
+ caught_sig = CS_TERM;
+ break;
+
+ case SIGUSR1:
+ caught_sig = CS_USR1;
+ break;
+
+ case SIGUSR2:
+ caught_sig = CS_USR2;
+ break;
+
+ default:
+ assert(0);
+ }
+}
+
+
+static void
+process( const Opts *opts, unsigned num_slot,
+ int infd, int outfd, const Pretty_print & pp, const sigset_t *unblocked )
+{
+ /*
+ We could wait for signals with either sigwait() or sigsuspend(). SUSv2
+ states about sigwait() that its effect on signal actions is unspecified.
+ SUSv3 still claims the same.
+
+ The SUSv2 description of sigsuspend() talks about both the thread and the
+ whole process being suspended until a signal arrives, although thread
+ suspension seems much more likely from the wording. They note that they
+ filed a clarification request for this. SUSv3 cleans this up and chooses
+ thread suspension which was more logical anyway.
+
+ I favor sigsuspend() because I need to re-raise SIGTERM and SIGINT, and
+ unspecified action behavior with sigwait() seems messy.
+
+ 13-OCT-2009 lacos
+ */
+
+ Plzip_arg muxer_arg;
+ pthread_t muxer;
+
+ if( verbosity >= 1 ) pp( "" );
+
+ muxer_arg.num_worker = opts->num_worker;
+ muxer_arg.num_slot = num_slot;
+ muxer_arg.clidx = opts->clidx;
+ muxer_arg.print_cctrs = opts->print_cctrs;
+ muxer_arg.infd = infd;
+ muxer_arg.outfd = outfd;
+ xcreate(&muxer, plzip_wrap, &muxer_arg);
+
+ /* Unblock signals, wait for them, then block them again. */
+ {
+ int ret = sigsuspend(unblocked);
+ assert(-1 == ret && EINTR == errno);
+ }
+
+ switch (caught_sig) {
+ case CS_INT:
+ case CS_TERM: // FIXME remove output file
+ {
+ int sig;
+ sigset_t mask;
+
+ sig = (CS_INT == caught_sig) ? SIGINT : SIGTERM;
+ /*
+ We might have inherited a SIG_IGN from the parent, but that would
+ make no sense here. 24-OCT-2009 lacos
+ */
+ xsigaction(sig, SIG_DFL);
+ xraise(sig);
+
+ xsigemptyset(&mask);
+ xsigaddset(&mask, sig);
+ xsigmask(SIG_UNBLOCK, &mask, 0);
+ }
+ /*
+ We shouldn't reach this point, but if we do for some reason, fall
+ through.
+ */
+
+ case CS_USR1:
+ /* Error from a non-main thread via fatal(). */
+ fatal();
+
+ case CS_USR2:
+ /* Muxer thread joined other sub-threads and finished successfully. */
+ break;
+
+ default:
+ assert(0);
+ }
+
+ xjoin(muxer);
+}
+
+
+static void
+sigs_mod(int block_n_catch, sigset_t *oset)
+{
+ void (*handler)(int);
+
+ if (block_n_catch) {
+ sigset_t mask;
+
+ xsigemptyset(&mask);
+ xsigaddset(&mask, SIGINT);
+ xsigaddset(&mask, SIGTERM);
+ xsigaddset(&mask, SIGUSR1);
+ xsigaddset(&mask, SIGUSR2);
+ xsigmask(SIG_BLOCK, &mask, oset);
+
+ handler = sighandler;
+ }
+ else {
+ handler = SIG_DFL;
+ }
+
+ xsigaction(SIGINT, handler);
+ xsigaction(SIGTERM, handler);
+ xsigaction(SIGUSR1, handler);
+ xsigaction(SIGUSR2, handler);
+
+ if (!block_n_catch) {
+ xsigmask(SIG_SETMASK, oset, 0);
+ }
+}
+
+
+void show_error( const char * msg, const int errcode, const bool help ) throw()
+ {
+ if( verbosity >= 0 )
+ {
+ if( msg && msg[0] != 0 )
+ {
+ std::fprintf( stderr, "%s: %s", program_name, msg );
+ if( errcode > 0 ) std::fprintf( stderr, ": %s", std::strerror( errcode ) );
+ std::fprintf( stderr, "\n" );
+ }
+ if( help && invocation_name && invocation_name[0] != 0 )
+ std::fprintf( stderr, "Try `%s --help' for more information.\n", invocation_name );
+ }
+ }
+
+
+void internal_error( const char * msg )
+ {
+ std::string s( "internal error: " ); s += msg;
+ show_error( s.c_str() );
+ std::exit( 3 );
+ }
+
+
+// Returns the number of bytes really read.
+// If (returned value < size) and (errno == 0), means EOF was reached.
+//
+int readblock( const int fd, char * buf, const int size ) throw()
+ {
+ int rest = size;
+ errno = 0;
+ while( rest > 0 )
+ {
+ errno = 0;
+ const int n = read( fd, buf + size - rest, rest );
+ if( n > 0 ) rest -= n;
+ else if( n == 0 ) break;
+ else if( errno != EINTR && errno != EAGAIN ) break;
+ }
+ return ( rest > 0 ) ? size - rest : size;
+ }
+
+
+// Returns the number of bytes really written.
+// If (returned value < size), it is always an error.
+//
+int writeblock( const int fd, const char * buf, const int size ) throw()
+ {
+ int rest = size;
+ errno = 0;
+ while( rest > 0 )
+ {
+ errno = 0;
+ const int n = write( fd, buf + size - rest, rest );
+ if( n > 0 ) rest -= n;
+ else if( errno && errno != EINTR && errno != EAGAIN ) break;
+ }
+ return ( rest > 0 ) ? size - rest : size;
+ }
+
+
+int main( const int argc, const char * argv[] )
+ {
+ Opts opts;
+ // Mapping from gzip/bzip2 style 1..9 compression modes
+ // to the corresponding LZMA compression modes.
+ const lzma_options option_mapping[] =
+ {
+ { 1 << 20, 10 }, // -1
+ { 1 << 20, 12 }, // -2
+ { 1 << 20, 17 }, // -3
+ { 1 << 21, 26 }, // -4
+ { 1 << 22, 44 }, // -5
+ { 1 << 23, 80 }, // -6
+ { 1 << 24, 108 }, // -7
+ { 1 << 24, 163 }, // -8
+ { 1 << 25, 273 } }; // -9
+ lzma_options encoder_options = option_mapping[5]; // default = "-6"
+ int inhandle = -1;
+ Mode program_mode = m_compress;
+ bool force = false;
+ bool keep_input_files = false;
+ bool to_stdout = false;
+ std::string input_filename;
+ std::string default_output_filename;
+ std::vector< std::string > filenames;
+ invocation_name = argv[0];
+
+ if( LZ_version()[0] != LZ_version_string[0] )
+ internal_error( "bad library version" );
+
+ main_thread = pthread_self();
+ pid = getpid();
+
+ mallocf = malloc;
+ freef = free;
+
+ xsigaction(SIGPIPE, SIG_IGN);
+ xsigaction(SIGXFSZ, SIG_IGN);
+
+ /* Effectuate option defaults. */
+ long max_worker = sysconf(_SC_THREAD_THREADS_MAX);
+ if (-1L == max_worker) {
+ max_worker = LONG_MAX;
+ }
+ if (UINT_MAX < (long unsigned)max_worker) {
+ max_worker = UINT_MAX;
+ }
+ if (UINT_MAX / blf < (unsigned)max_worker) {
+ max_worker = UINT_MAX / blf;
+ }
+ if ((size_t)-1 / sizeof(pthread_t) < (unsigned)max_worker) {
+ max_worker = (size_t)-1 / sizeof(pthread_t);
+ }
+
+ opts.num_worker = 0u;
+ opts.clidx = 5u;
+ opts.print_cctrs = 0;
+
+ const Arg_parser::Option options[] =
+ {
+ { '1', "fast", Arg_parser::no },
+ { '2', 0, Arg_parser::no },
+ { '3', 0, Arg_parser::no },
+ { '4', 0, Arg_parser::no },
+ { '5', 0, Arg_parser::no },
+ { '6', 0, Arg_parser::no },
+ { '7', 0, Arg_parser::no },
+ { '8', 0, Arg_parser::no },
+ { '9', "best", Arg_parser::no },
+ { 'b', "member-size", Arg_parser::yes },
+ { 'c', "stdout", Arg_parser::no },
+ { 'd', "decompress", Arg_parser::no },
+ { 'D', "debug", Arg_parser::yes },
+ { 'f', "force", Arg_parser::no },
+ { 'h', "help", Arg_parser::no },
+ { 'k', "keep", Arg_parser::no },
+ { 'm', "match-length", Arg_parser::yes },
+ { 'n', "threads", Arg_parser::yes },
+ { 'o', "output", Arg_parser::yes },
+ { 'q', "quiet", Arg_parser::no },
+ { 's', "dictionary-size", Arg_parser::yes },
+ { 'S', "volume-size", Arg_parser::yes },
+ { 't', "test", Arg_parser::no },
+ { 'v', "verbose", Arg_parser::no },
+ { 'V', "version", Arg_parser::no },
+ { 0 , 0, Arg_parser::no } };
+
+ Arg_parser parser( argc, argv, options );
+ if( parser.error().size() ) // bad option
+ { show_error( parser.error().c_str(), 0, true ); return 1; }
+
+ int argind = 0;
+ for( ; argind < parser.arguments(); ++argind )
+ {
+ const int code = parser.code( argind );
+ if( !code ) break; // no more options
+ const char * arg = parser.argument( argind ).c_str();
+ switch( code )
+ {
+ case '1': case '2': case '3':
+ case '4': case '5': case '6':
+ case '7': case '8': case '9':
+ opts.clidx = code - '1';
+ encoder_options = option_mapping[code-'1']; break;
+ case 'c': to_stdout = true; break;
+ case 'd': program_mode = m_decompress; break;
+ case 'D': { int debug_level = getnum( arg, 0, 0, 3 );
+ if( debug_level & 1 ) opts.print_cctrs = 1;
+ if( debug_level & 2 )
+ { mallocf = trace_malloc; freef = trace_free; } }
+ break;
+ case 'f': force = true; break;
+ case 'h': show_help(); return 0;
+ case 'k': keep_input_files = true; break;
+ case 'm': encoder_options.match_len_limit =
+ getnum( arg, 0, 5, 273 ); break;
+ case 'o': default_output_filename = arg; break;
+ case 'n': opts.num_worker = getnum( arg, 0, 1, max_worker ); break;
+ case 'q': verbosity = -1; break;
+ case 's': encoder_options.dictionary_size = get_dict_size( arg );
+ break;
+ case 't': program_mode = m_test; break;
+ case 'v': if( verbosity < 4 ) ++verbosity; break;
+ case 'V': show_version(); return 0;
+ default : internal_error( "uncaught option" );
+ }
+ }
+
+ if( opts.num_worker <= 0 )
+ {
+#ifdef _SC_NPROCESSORS_ONLN
+ long num_online = sysconf( _SC_NPROCESSORS_ONLN );
+ if( num_online <= 0 )
+ {
+ show_error( "number of online processors unavailable.", 0, true );
+ fatal();
+ }
+ opts.num_worker = std::min( num_online, max_worker );
+#else
+ show_error( "number of (de)compression threads not set.", 0, true );
+ fatal();
+#endif
+ }
+ assert(UINT_MAX / blf >= opts.num_worker);
+ unsigned num_slot = opts.num_worker * blf;
+
+ bool filenames_given = false;
+ for( ; argind < parser.arguments(); ++argind )
+ {
+ if( parser.argument( argind ) != "-" ) filenames_given = true;
+ filenames.push_back( parser.argument( argind ) );
+ }
+
+ if( filenames.empty() ) filenames.push_back("-");
+ if( filenames_given && program_mode != m_compress ) set_signals();
+
+ Pretty_print pp( filenames );
+ if( program_mode == m_test )
+ outhandle = -1;
+
+ int retval = 0;
+ for( unsigned int i = 0; i < filenames.size(); ++i )
+ {
+ struct stat in_stats;
+ output_filename.clear();
+
+ if( !filenames[i].size() || filenames[i] == "-" )
+ {
+ input_filename.clear();
+ inhandle = STDIN_FILENO;
+ if( program_mode != m_test )
+ {
+ if( to_stdout || !default_output_filename.size() )
+ outhandle = STDOUT_FILENO;
+ else
+ {
+ if( program_mode == m_compress )
+ set_c_outname( default_output_filename );
+ else output_filename = default_output_filename;
+ if( !open_outstream( force ) )
+ {
+ if( outhandle == -1 && retval < 1 ) retval = 1;
+ close( inhandle ); inhandle = -1;
+ continue;
+ }
+ }
+ }
+ }
+ else
+ {
+ input_filename = filenames[i];
+ const int eindex = extension_index( input_filename );
+ inhandle = open_instream( input_filename, &in_stats, program_mode,
+ eindex, force, to_stdout );
+ if( inhandle < 0 ) { if( retval < 1 ) retval = 1; continue; }
+ if( program_mode != m_test )
+ {
+ if( to_stdout ) outhandle = STDOUT_FILENO;
+ else
+ {
+ if( program_mode == m_compress )
+ set_c_outname( input_filename );
+ else set_d_outname( input_filename, eindex );
+ if( !open_outstream( force ) )
+ {
+ if( outhandle == -1 && retval < 1 ) retval = 1;
+ close( inhandle ); inhandle = -1;
+ continue;
+ }
+ }
+ }
+ }
+
+ if( !check_tty( inhandle, program_mode ) ) return 1;
+
+ if( output_filename.size() && !to_stdout && program_mode != m_test )
+ delete_output_on_interrupt = true;
+ const struct stat * in_statsp = input_filename.size() ? &in_stats : 0;
+ pp.set_name( input_filename );
+ int tmp = 0;
+ if( program_mode == m_compress )
+ {
+ sigset_t unblocked;
+ sigs_mod(1, &unblocked);
+ process( &opts, num_slot, inhandle, outhandle, pp, &unblocked );
+ sigs_mod(0, &unblocked);
+ }
+ else
+ tmp = decompress( inhandle, pp, program_mode == m_test );
+ if( tmp > retval ) retval = tmp;
+ if( tmp && program_mode != m_test ) cleanup_and_fail( retval );
+
+ if( delete_output_on_interrupt )
+ close_and_set_permissions( in_statsp, &retval );
+ if( input_filename.size() )
+ {
+ close( inhandle ); inhandle = -1;
+ if( !keep_input_files && !to_stdout && program_mode != m_test )
+ std::remove( input_filename.c_str() );
+ }
+ }
+ if( outhandle >= 0 && close( outhandle ) != 0 )
+ {
+ if( verbosity >= 0 )
+ std::fprintf( stderr, "%s: Can't close stdout: %s.\n",
+ program_name, std::strerror( errno ) );
+ if( retval < 1 ) retval = 1;
+ }
+ return retval;
+ }
diff --git a/main.h b/main.h
new file mode 100644
index 0000000..2f066cd
--- /dev/null
+++ b/main.h
@@ -0,0 +1,80 @@
+/* Plzip - A parallel version of the lzip data compressor
+ Copyright (C) 2009 Laszlo Ersek.
+ Copyright (C) 2009 Antonio Diaz Diaz.
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+void show_error( const char * msg, const int errcode = 0, const bool help = false ) throw();
+extern void *(*mallocf)(size_t size);
+extern void (*freef)(void *ptr);
+
+
+struct Cond
+{
+ pthread_mutex_t lock; /* Lock this to protect shared resource. */
+ pthread_cond_t cond; /* Trigger this if predicate becomes true. */
+ long unsigned ccount, /* Increment this when checking predicate. */
+ wcount; /* Increment this when waiting is necessary. */
+};
+
+
+/* Terminate the process with EXIT_FAILURE. */
+void
+fatal(void);
+
+/* Format operation and append resolved error, then call fatal(). */
+void
+fail(const char *fmt, int err, ...)
+#ifdef __GNUC__
+__attribute__((format(printf, 1, 3)))
+#endif
+;
+
+/* If these primitives fail, they call fail(), which in turn calls fatal(). */
+void *
+xalloc(size_t size);
+
+void
+xinit(Cond *cond);
+
+void
+xdestroy(Cond *cond);
+
+void
+xlock(Cond *cond);
+
+void
+xlock_pred(Cond *cond);
+
+void
+xunlock(Cond *cond);
+
+void
+xwait(Cond *cond);
+
+void
+xsignal(Cond *cond);
+
+void
+xbroadcast(Cond *cond);
+
+void
+xcreate(pthread_t *thread, void *(*routine)(void *), void *arg);
+
+void
+xjoin(pthread_t thread);
+
+void
+xraise(int sig);
diff --git a/plzip.cc b/plzip.cc
new file mode 100644
index 0000000..f110437
--- /dev/null
+++ b/plzip.cc
@@ -0,0 +1,669 @@
+/* Plzip - A parallel version of the lzip data compressor
+ Copyright (C) 2009 Laszlo Ersek.
+ Copyright (C) 2009 Antonio Diaz Diaz.
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#define _FILE_OFFSET_BITS 64
+
+#include <cassert>
+#include <cerrno>
+#include <climits>
+#include <csignal>
+#include <cstdio>
+#include <cstdlib>
+#include <stdint.h>
+#include <unistd.h>
+#include <lzlib.h>
+
+#include "main.h"
+#include "plzip.h"
+#include "lacos_rbtree.h"
+
+
+struct S2w_blk /* Splitter to workers. */
+{
+ uint64_t id; /* Block serial number as read from infd. */
+ S2w_blk *next; /* Next in queue. */
+ size_t loaded; /* # of bytes in plain, may be 0 for 1st. */
+ char unsigned plain[1]; /* Data read from infd, allocated: sizeof_plain. */
+};
+
+
+struct S2w_q
+{
+ Cond av_or_eof; /* New block available or splitter done. */
+ S2w_blk *tail, /* Splitter will append here. */
+ *head; /* Next ready worker shall compress this. */
+ int eof; /* Splitter done. */
+};
+
+
+static void
+s2w_q_init(S2w_q *s2w_q)
+{
+ xinit(&s2w_q->av_or_eof);
+ s2w_q->tail = 0;
+ s2w_q->head = 0;
+ s2w_q->eof = 0;
+}
+
+
+static void
+s2w_q_uninit(S2w_q *s2w_q)
+{
+ assert(0 != s2w_q->eof);
+ assert(0 == s2w_q->head);
+ assert(0 == s2w_q->tail);
+ xdestroy(&s2w_q->av_or_eof);
+}
+
+
+struct W2m_blk /* Workers to muxer. */
+{
+ uint64_t id; /* Block index as read from infd. */
+ W2m_blk *next; /* Next block in list (unordered). */
+ size_t produced; /* Number of bytes in compr. */
+ char unsigned compr[1]; /* Data to write to outfd, alloc.: sizeof_compr. */
+};
+
+
+static int
+w2m_blk_cmp(const void *v_a, const void *v_b)
+{
+ uint64_t a,
+ b;
+
+ a = ((const W2m_blk *)v_a)->id;
+ b = ((const W2m_blk *)v_b)->id;
+
+ return
+ a < b ? -1
+ : a > b ? 1
+ : 0;
+}
+
+
+struct W2m_q
+{
+ Cond av_or_exit; /* New block available or all workers exited. */
+ uint64_t needed; /* Block needed for resuming writing. */
+ W2m_blk *head; /* Block list (unordered). */
+ unsigned working; /* Number of workers still running. */
+};
+
+
+static void
+w2m_q_init(W2m_q *w2m_q, unsigned num_worker)
+{
+ assert(0u < num_worker);
+ xinit(&w2m_q->av_or_exit);
+ w2m_q->needed = 0u;
+ w2m_q->head = 0;
+ w2m_q->working = num_worker;
+}
+
+
+static void
+w2m_q_uninit(W2m_q *w2m_q)
+{
+ assert(0u == w2m_q->working);
+ assert(0 == w2m_q->head);
+ xdestroy(&w2m_q->av_or_exit);
+}
+
+
+struct M2s_q /* Muxer to splitter. */
+{
+ Cond av; /* Free slot available. */
+ unsigned num_free; /* Number of free slots. */
+};
+
+
+static void
+m2s_q_init(M2s_q *m2s_q, unsigned num_free)
+{
+ assert(0u < num_free);
+ xinit(&m2s_q->av);
+ m2s_q->num_free = num_free;
+}
+
+
+static void
+m2s_q_uninit(M2s_q *m2s_q, unsigned num_free)
+{
+ assert(m2s_q->num_free == num_free);
+ xdestroy(&m2s_q->av);
+}
+
+
+static void
+split(M2s_q *m2s_q, S2w_q *s2w_q, int infd,
+ const size_t sizeof_plain, const size_t sizeof_s2w_blk)
+{
+ uint64_t id;
+ ssize_t rd;
+
+ id = 0u;
+ do {
+ S2w_blk *s2w_blk;
+ size_t vacant;
+
+ /* Grab a free slot. */
+ xlock_pred(&m2s_q->av);
+ while (0u == m2s_q->num_free) {
+ xwait(&m2s_q->av);
+ }
+ --m2s_q->num_free;
+ xunlock(&m2s_q->av);
+ s2w_blk = (S2w_blk *)xalloc(sizeof_s2w_blk);
+
+ /* Fill block. */
+ vacant = sizeof_plain;
+ do {
+ rd = read(infd, s2w_blk->plain + (sizeof_plain - vacant),
+ vacant > (size_t)SSIZE_MAX ? (size_t)SSIZE_MAX : vacant);
+ } while (0 < rd && 0u < (vacant -= (size_t)rd));
+
+ /* Read error. */
+ if (-1 == rd) {
+ fail("read()", errno);
+ }
+
+ if (sizeof_plain == vacant && 0u < id) {
+ /* EOF on first read, but not for first input block. */
+ (*freef)(s2w_blk);
+ xlock(&m2s_q->av);
+ ++m2s_q->num_free;
+ xunlock(&m2s_q->av);
+ }
+ else {
+ s2w_blk->id = id;
+ s2w_blk->next = 0;
+ s2w_blk->loaded = sizeof_plain - vacant;
+ }
+
+ /* We either push a block, or set EOF, or both. */
+ assert(sizeof_plain > vacant || 0 == rd);
+
+ xlock(&s2w_q->av_or_eof);
+ if (0 == s2w_q->head) {
+ xbroadcast(&s2w_q->av_or_eof);
+ }
+
+ if (sizeof_plain > vacant || 0u == id) {
+ if (0 == s2w_q->tail) {
+ s2w_q->head = s2w_blk;
+ }
+ else {
+ s2w_q->tail->next = s2w_blk;
+ }
+ s2w_q->tail = s2w_blk;
+ }
+ s2w_q->eof = (0 == rd);
+ xunlock(&s2w_q->av_or_eof);
+
+ /*
+ If we didn't push a block, then this is bogus, but then we did set EOF,
+ so it doesn't matter, because we'll leave immediately.
+ */
+ ++id;
+ } while (0 < rd);
+}
+
+
+struct Split_arg
+{
+ M2s_q *m2s_q;
+ S2w_q *s2w_q;
+ int infd;
+ size_t sizeof_plain,
+ sizeof_S2w_blk;
+};
+
+
+static void *
+split_wrap(void *v_split_arg)
+{
+ Split_arg *split_arg = (Split_arg *)v_split_arg;
+
+ split(
+ split_arg->m2s_q,
+ split_arg->s2w_q,
+ split_arg->infd,
+ split_arg->sizeof_plain,
+ split_arg->sizeof_S2w_blk
+ );
+ return 0;
+}
+
+
+static void
+work_lz_rd(W2m_blk *w2m_blk, const size_t sizeof_compr, void *lz)
+{
+ int rd;
+
+ assert(w2m_blk->produced < sizeof_compr);
+ rd = LZ_compress_read(lz, w2m_blk->compr + w2m_blk->produced,
+ sizeof_compr - w2m_blk->produced);
+ if (-1 == rd) {
+ show_error( "LZ_compress_read() failed." );
+ fatal();
+ }
+ w2m_blk->produced += (size_t)rd;
+}
+
+
+struct Compr_lev
+{
+ unsigned dict_size,
+ mx_match;
+};
+
+
+static const Compr_lev compr_lev[] = {
+ { 1u * 1024u * 1024u, 10u },
+ { 1u * 1024u * 1024u, 12u },
+ { 1u * 1024u * 1024u, 17u },
+ { 2u * 1024u * 1024u, 26u },
+ { 4u * 1024u * 1024u, 44u },
+ { 8u * 1024u * 1024u, 80u },
+ { 16u * 1024u * 1024u, 108u },
+ { 16u * 1024u * 1024u, 163u },
+ { 32u * 1024u * 1024u, 273u }
+};
+
+
+static void
+work_compr(S2w_blk *s2w_blk, W2m_q *w2m_q, unsigned clidx,
+ const size_t sizeof_compr, const size_t sizeof_w2m_blk)
+{
+ W2m_blk *w2m_blk;
+
+ assert(0u < s2w_blk->loaded || 0u == s2w_blk->id);
+
+ w2m_blk = (W2m_blk *)xalloc(sizeof_w2m_blk);
+
+ /* Single member compression. Settings like with lzip -6. */
+ {
+ void *lz;
+ size_t written;
+
+ lz = LZ_compress_open(compr_lev[clidx].dict_size,
+ compr_lev[clidx].mx_match, (uint64_t)-1 / 2u);
+ if (LZ_ok != LZ_compress_errno(lz)) {
+ show_error( "LZ_compress_open() failed." );
+ fatal();
+ }
+
+ written = 0u;
+ w2m_blk->produced = 0u;
+ while (written < s2w_blk->loaded) {
+ int wr;
+
+ wr = LZ_compress_write(lz, s2w_blk->plain + written,
+ s2w_blk->loaded - written);
+ if (-1 == wr) {
+ show_error( "LZ_compress_write() failed." );
+ fatal();
+ }
+ written += (size_t)wr;
+
+ work_lz_rd(w2m_blk, sizeof_compr, lz);
+ }
+
+ if (-1 == LZ_compress_finish(lz)) {
+ show_error( "LZ_compress_finish() failed." );
+ fatal();
+ }
+
+ while (!LZ_compress_finished(lz)) {
+ work_lz_rd(w2m_blk, sizeof_compr, lz);
+ }
+
+ if (-1 == LZ_compress_close(lz)) {
+ show_error( "LZ_compress_close() failed." );
+ fatal();
+ }
+ }
+
+ w2m_blk->id = s2w_blk->id;
+
+ /* Push block to muxer. */
+ xlock(&w2m_q->av_or_exit);
+ w2m_blk->next = w2m_q->head;
+ w2m_q->head = w2m_blk;
+ if (w2m_blk->id == w2m_q->needed) {
+ xsignal(&w2m_q->av_or_exit);
+ }
+ xunlock(&w2m_q->av_or_exit);
+}
+
+
+static void
+work(S2w_q *s2w_q, W2m_q *w2m_q, unsigned clidx,
+ const size_t sizeof_compr, const size_t sizeof_w2m_blk)
+{
+ for (;;) {
+ S2w_blk *s2w_blk;
+
+ /* Grab a block to work on. */
+ xlock_pred(&s2w_q->av_or_eof);
+ while (0 == s2w_q->head && !s2w_q->eof) {
+ xwait(&s2w_q->av_or_eof);
+ }
+ if (0 == s2w_q->head) {
+ /* No blocks available and splitter exited. */
+ xunlock(&s2w_q->av_or_eof);
+ break;
+ }
+ s2w_blk = s2w_q->head;
+ s2w_q->head = s2w_blk->next;
+ if (0 == s2w_q->head) {
+ s2w_q->tail = 0;
+ }
+ xunlock(&s2w_q->av_or_eof);
+
+ work_compr(s2w_blk, w2m_q, clidx, sizeof_compr, sizeof_w2m_blk);
+ (*freef)(s2w_blk);
+ }
+
+ /* Notify muxer when last worker exits. */
+ xlock(&w2m_q->av_or_exit);
+ if (0u == --w2m_q->working && 0 == w2m_q->head) {
+ xsignal(&w2m_q->av_or_exit);
+ }
+ xunlock(&w2m_q->av_or_exit);
+}
+
+
+struct Work_arg
+{
+ S2w_q *s2w_q;
+ W2m_q *w2m_q;
+ unsigned clidx;
+ size_t sizeof_compr,
+ sizeof_W2m_blk;
+};
+
+
+static void *
+work_wrap(void *v_work_arg)
+{
+ Work_arg *work_arg;
+
+ work_arg = (Work_arg *)v_work_arg;
+ work(
+ work_arg->s2w_q,
+ work_arg->w2m_q,
+ work_arg->clidx,
+ work_arg->sizeof_compr,
+ work_arg->sizeof_W2m_blk
+ );
+ return 0;
+}
+
+
+static void *
+reord_alloc(size_t size, void *)
+{
+ return (*mallocf)(size);
+}
+
+
+static void
+reord_dealloc(void *ptr, void *)
+{
+ (*freef)(ptr);
+}
+
+
+static void
+mux_write(M2s_q *m2s_q, lacos_rbtree_node **reord,
+ uint64_t *reord_needed, int outfd)
+{
+ assert(0 != *reord);
+
+ /*
+ Go on until the tree becomes empty or the next block is found to be
+ missing.
+ */
+ do {
+ lacos_rbtree_node *reord_head;
+ W2m_blk *reord_w2m_blk;
+
+ reord_head = lacos_rbtree_min(*reord);
+ assert(0 != reord_head);
+
+ reord_w2m_blk = (W2m_blk *)(*(void **)reord_head);
+ if (reord_w2m_blk->id != *reord_needed) {
+ break;
+ }
+
+ /* Write out "reord_w2m_blk". */
+ if (-1 != outfd) {
+ char unsigned *cp;
+
+ cp = reord_w2m_blk->compr;
+ while (reord_w2m_blk->produced > 0u) {
+ ssize_t written;
+
+ written = write(outfd, cp, reord_w2m_blk->produced > (size_t)SSIZE_MAX
+ ? (size_t)SSIZE_MAX : reord_w2m_blk->produced);
+ if (-1 == written) {
+ fail("write()", errno);
+ }
+
+ reord_w2m_blk->produced -= (size_t)written;
+ cp += written;
+ }
+ }
+
+ ++*reord_needed;
+
+ xlock(&m2s_q->av);
+ if (0u == m2s_q->num_free++) {
+ xsignal(&m2s_q->av);
+ }
+ xunlock(&m2s_q->av);
+
+ lacos_rbtree_delete(
+ reord, /* new_root */
+ reord_head, /* old_node */
+ 0, /* old_data */
+ reord_dealloc, /* dealloc() */
+ 0 /* alloc_ctl */
+ );
+
+ /* Release "reord_w2m_blk". */
+ (*freef)(reord_w2m_blk);
+ } while (0 != *reord);
+}
+
+
+static void
+mux(W2m_q *w2m_q, M2s_q *m2s_q, int outfd)
+{
+ lacos_rbtree_node *reord;
+ uint64_t reord_needed;
+
+ reord = 0;
+ reord_needed = 0u;
+
+ xlock_pred(&w2m_q->av_or_exit);
+ for (;;) {
+ W2m_blk *w2m_blk;
+
+ /* Grab all available compressed blocks in one step. */
+ while (0 == w2m_q->head && 0u < w2m_q->working) {
+ xwait(&w2m_q->av_or_exit);
+ }
+
+ if (0 == w2m_q->head) {
+ /* w2m_q is empty and all workers exited */
+ break;
+ }
+
+ w2m_blk = w2m_q->head;
+ w2m_q->head = 0;
+ xunlock(&w2m_q->av_or_exit);
+
+ /* Merge blocks fetched this time into tree. */
+ do {
+ lacos_rbtree_node *new_node;
+ W2m_blk *next;
+
+ if (-1 == lacos_rbtree_insert(
+ &reord, /* new_root */
+ &new_node, /* new_node */
+ w2m_blk, /* new_data */
+ w2m_blk_cmp, /* cmp() */
+ reord_alloc, /* alloc() */
+ 0 /* alloc_ctl */
+ )) {
+ /* id collision shouldn't happen */
+ assert(0 == new_node);
+ show_error( "lacos_rbtree_insert(): out of memory." );
+ fatal();
+ }
+
+ next = w2m_blk->next;
+ w2m_blk->next = 0;
+ w2m_blk = next;
+ } while (0 != w2m_blk);
+
+ /* Write out initial continuous sequence of reordered blocks. */
+ mux_write(m2s_q, &reord, &reord_needed, outfd);
+
+ xlock_pred(&w2m_q->av_or_exit);
+ w2m_q->needed = reord_needed;
+ }
+ xunlock(&w2m_q->av_or_exit);
+
+ assert(0 == reord);
+}
+
+
+static void
+plzip(unsigned num_worker, unsigned num_slot, unsigned clidx, int print_cctrs,
+ int infd, int outfd)
+{
+ S2w_q s2w_q;
+ W2m_q w2m_q;
+ M2s_q m2s_q;
+ Split_arg split_arg;
+ pthread_t splitter;
+ Work_arg work_arg;
+ pthread_t *worker;
+ unsigned i;
+
+ assert(clidx < sizeof compr_lev / sizeof compr_lev[0]);
+
+ s2w_q_init(&s2w_q);
+ w2m_q_init(&w2m_q, num_worker);
+ m2s_q_init(&m2s_q, num_slot);
+
+#define SIZES(struc, arr, arsz_unsigned, arg) \
+ do { \
+ unsigned tmp; \
+\
+ tmp = arsz_unsigned; \
+ if ((size_t)-1 < tmp) { \
+ show_error( "size_t overflow in sizeof_" #arr "." ); \
+ fatal(); \
+ } \
+ arg ## _arg . sizeof_ ## arr = tmp; \
+\
+ if ((size_t)-1 - sizeof(struc) \
+ < arg ## _arg . sizeof_ ## arr - (size_t)1) { \
+ show_error( "size_t overflow in sizeof_" #struc "." ); \
+ fatal(); \
+ } \
+ arg ## _arg . sizeof_ ## struc = sizeof(struc) \
+ + (arg ## _arg . sizeof_ ## arr - (size_t)1); \
+ } while (0)
+
+ split_arg.m2s_q = &m2s_q;
+ split_arg.s2w_q = &s2w_q;
+ split_arg.infd = infd;
+ SIZES(S2w_blk, plain, 2u * compr_lev[clidx].dict_size, split);
+ xcreate(&splitter, split_wrap, &split_arg);
+
+ work_arg.s2w_q = &s2w_q;
+ work_arg.w2m_q = &w2m_q;
+ work_arg.clidx = clidx;
+ SIZES(W2m_blk, compr, (4u + 1u + 1u)
+ + ((unsigned)split_arg.sizeof_plain * 9u + 7u) / 8u + (4u + 8u + 8u),
+ work);
+
+#undef SIZES
+
+ assert(0u < num_worker);
+ assert((size_t)-1 / sizeof *worker >= num_worker);
+ worker = (pthread_t *)xalloc(num_worker * sizeof *worker);
+ for (i = 0u; i < num_worker; ++i) {
+ xcreate(&worker[i], work_wrap, &work_arg);
+ }
+
+ mux(&w2m_q, &m2s_q, outfd);
+
+ i = num_worker;
+ do {
+ xjoin(worker[--i]);
+ } while (0u < i);
+ (*freef)(worker);
+
+ xjoin(splitter);
+
+ const int FW = ( sizeof(long unsigned) * 8 ) / 3 + 1;
+ if (print_cctrs && 0 > fprintf(stderr,
+ "any worker tried to consume from splitter: %*lu\n"
+ "any worker stalled : %*lu\n"
+ "muxer tried to consume from workers : %*lu\n"
+ "muxer stalled : %*lu\n"
+ "splitter tried to consume from muxer : %*lu\n"
+ "splitter stalled : %*lu\n",
+ FW, s2w_q.av_or_eof.ccount,
+ FW, s2w_q.av_or_eof.wcount,
+ FW, w2m_q.av_or_exit.ccount,
+ FW, w2m_q.av_or_exit.wcount,
+ FW, m2s_q.av.ccount,
+ FW, m2s_q.av.wcount) )
+ {
+ fatal();
+ }
+
+ m2s_q_uninit(&m2s_q, num_slot);
+ w2m_q_uninit(&w2m_q);
+ s2w_q_uninit(&s2w_q);
+}
+
+
+void *
+plzip_wrap(void *v_arg)
+{
+ Plzip_arg *arg = (Plzip_arg *)v_arg;
+ plzip(
+ arg->num_worker,
+ arg->num_slot,
+ arg->clidx,
+ arg->print_cctrs,
+ arg->infd,
+ arg->outfd
+ );
+
+ xraise(SIGUSR2);
+ return 0;
+}
diff --git a/plzip.h b/plzip.h
new file mode 100644
index 0000000..d59a90c
--- /dev/null
+++ b/plzip.h
@@ -0,0 +1,30 @@
+/* Plzip - A parallel version of the lzip data compressor
+ Copyright (C) 2009 Laszlo Ersek.
+ Copyright (C) 2009 Antonio Diaz Diaz.
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+struct Plzip_arg
+{
+ unsigned num_worker,
+ num_slot,
+ clidx;
+ int print_cctrs,
+ infd,
+ outfd;
+};
+
+void *
+plzip_wrap(void *v_arg);
diff --git a/testsuite/COPYING.lz b/testsuite/COPYING.lz
new file mode 100644
index 0000000..a09b1e8
--- /dev/null
+++ b/testsuite/COPYING.lz
Binary files differ
diff --git a/testsuite/check.sh b/testsuite/check.sh
new file mode 100755
index 0000000..8a2ecd0
--- /dev/null
+++ b/testsuite/check.sh
@@ -0,0 +1,69 @@
+#! /bin/sh
+# check script for Plzip - A parallel version of the lzip data compressor
+# Copyright (C) 2009 Antonio Diaz Diaz.
+#
+# This script is free software: you have unlimited permission
+# to copy, distribute and modify it.
+
+LC_ALL=C
+export LC_ALL
+objdir=`pwd`
+testdir=`cd "$1" ; pwd`
+LZIP="${objdir}"/plzip
+framework_failure() { echo 'failure in testing framework'; exit 1; }
+
+if [ ! -x "${LZIP}" ] ; then
+ echo "${LZIP}: cannot execute"
+ exit 1
+fi
+
+if [ -d tmp ] ; then rm -rf tmp ; fi
+mkdir tmp
+echo -n "testing plzip..."
+cd "${objdir}"/tmp
+
+cat "${testdir}"/../COPYING > in || framework_failure
+fail=0
+
+"${LZIP}" -cd "${testdir}"/COPYING.lz > copy || fail=1
+cmp in copy || fail=1
+
+for i in s4096 1 2 3 4 5 6 7 8; do
+ "${LZIP}" -k -$i in || fail=1
+ mv -f in.lz copy.lz || fail=1
+ echo -n "garbage" >> copy.lz || fail=1
+ "${LZIP}" -df copy.lz || fail=1
+ cmp in copy || fail=1
+ echo -n .
+done
+
+for i in s4096 1 2 3 4 5 6 7 8; do
+ "${LZIP}" -c -$i in > out || fail=1
+ echo -n "g" >> out || fail=1
+ "${LZIP}" -cd out > copy || fail=1
+ cmp in copy || fail=1
+ echo -n .
+done
+
+for i in s4096 1 2 3 4 5 6 7 8; do
+ "${LZIP}" -c -$i < in > out || fail=1
+ "${LZIP}" -d < out > copy || fail=1
+ cmp in copy || fail=1
+ echo -n .
+done
+
+for i in s4096 1 2 3 4 5 6 7 8; do
+ "${LZIP}" -f -$i -o out < in || fail=1
+ "${LZIP}" -df -o copy < out.lz || fail=1
+ cmp in copy || fail=1
+ echo -n .
+done
+
+echo
+if [ ${fail} = 0 ] ; then
+ echo "tests completed successfully."
+ cd "${objdir}" && rm -r tmp
+else
+ echo "tests failed."
+fi
+exit ${fail}