From 9eab306d85e2f8e6ba93f33ce3c04f238e969b67 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 7 Nov 2015 16:08:12 +0100 Subject: Adding upstream version 0.1. Signed-off-by: Daniel Baumann --- AUTHORS | 4 + COPYING | 676 ++++++++++++++++++++++++++ ChangeLog | 21 + INSTALL | 57 +++ Makefile.in | 107 +++++ NEWS | 3 + README | 21 + arg_parser.cc | 193 ++++++++ arg_parser.h | 95 ++++ configure | 213 +++++++++ doc/plzip.1 | 71 +++ doc/plzip.info | 303 ++++++++++++ doc/plzip.texinfo | 311 ++++++++++++ lacos_rbtree.cc | 418 ++++++++++++++++ lacos_rbtree.h | 249 ++++++++++ main.cc | 1300 ++++++++++++++++++++++++++++++++++++++++++++++++++ main.h | 80 ++++ plzip.cc | 669 ++++++++++++++++++++++++++ plzip.h | 30 ++ testsuite/COPYING.lz | Bin 0 -> 11540 bytes testsuite/check.sh | 69 +++ 21 files changed, 4890 insertions(+) create mode 100644 AUTHORS create mode 100644 COPYING create mode 100644 ChangeLog create mode 100644 INSTALL create mode 100644 Makefile.in create mode 100644 NEWS create mode 100644 README create mode 100644 arg_parser.cc create mode 100644 arg_parser.h create mode 100755 configure create mode 100644 doc/plzip.1 create mode 100644 doc/plzip.info create mode 100644 doc/plzip.texinfo create mode 100644 lacos_rbtree.cc create mode 100644 lacos_rbtree.h create mode 100644 main.cc create mode 100644 main.h create mode 100644 plzip.cc create mode 100644 plzip.h create mode 100644 testsuite/COPYING.lz create mode 100755 testsuite/check.sh diff --git a/AUTHORS b/AUTHORS new file mode 100644 index 0000000..b0302ac --- /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 @@ + + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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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. + + + Copyright (C) + + 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 . + +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: + + Copyright (C) + 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 +. + + 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 +. + 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 + + * Version 0.1 released. + * This version is based on llzip-0.03 (2009-11-21), written by + Laszlo Ersek . + 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 . +*/ + +#include +#include +#include + +#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] ) // `--=' 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 . +*/ + +/* 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 `-' + (without whitespace), or `--='. +*/ + +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 +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 +.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 +. Include the version number, which you can find +by running `plzip --version'. + + +File: plzip.info, Node: Concept Index, Prev: Problems, Up: Top + +Concept Index +************* + +[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 . +*/ + +#define _FILE_OFFSET_BITS 64 + +#include + +#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 . +*/ + +#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 . +*/ +/* + 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 +#include +#include +#include +#include +#include /* va_list */ +#include +#include /* flockfile() */ +#include +#include /* strerror() */ +#include +#include +#include /* open() */ +#include +#include +#include +#include +#include +#include + +#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= 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= set match length limit in bytes [80]\n" ); + std::printf( " -n, --threads= set the number of (de)compression threads\n" ); +// std::printf( " -o, --output= if reading stdin, place the output into \n" ); + std::printf( " -q, --quiet suppress all messages\n" ); +// std::printf( " -s, --dictionary-size= set dictionary size limit in bytes [8MiB]\n" ); +// std::printf( " -S, --volume-size= 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= (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 \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 . +*/ + +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 . +*/ + +#define _FILE_OFFSET_BITS 64 + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#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 . +*/ + +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 Binary files /dev/null and b/testsuite/COPYING.lz 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} -- cgit v1.2.3