From 601d555ac1ead248ceae25bc94ed942df7d62f4d Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 6 Nov 2015 14:12:24 +0100 Subject: Adding upstream version 1.0~rc1. Signed-off-by: Daniel Baumann --- AUTHORS | 1 + COPYING | 676 +++++++++++++++++++++++++++++++++++++++++++++++++++ ChangeLog | 12 + INSTALL | 56 +++++ Makefile.in | 105 ++++++++ NEWS | 5 + README | 42 ++++ carg_parser.c | 292 ++++++++++++++++++++++ carg_parser.h | 101 ++++++++ configure | 194 +++++++++++++++ decoder.c | 248 +++++++++++++++++++ decoder.h | 380 +++++++++++++++++++++++++++++ doc/lunzip.1 | 53 ++++ lunzip.h | 280 +++++++++++++++++++++ main.c | 657 +++++++++++++++++++++++++++++++++++++++++++++++++ testsuite/check.sh | 76 ++++++ testsuite/test.txt | 676 +++++++++++++++++++++++++++++++++++++++++++++++++++ testsuite/test_v0.lz | Bin 0 -> 11540 bytes testsuite/test_v1.lz | Bin 0 -> 11548 bytes 19 files changed, 3854 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 carg_parser.c create mode 100644 carg_parser.h create mode 100755 configure create mode 100644 decoder.c create mode 100644 decoder.h create mode 100644 doc/lunzip.1 create mode 100644 lunzip.h create mode 100644 main.c create mode 100755 testsuite/check.sh create mode 100644 testsuite/test.txt create mode 100644 testsuite/test_v0.lz create mode 100644 testsuite/test_v1.lz diff --git a/AUTHORS b/AUTHORS new file mode 100644 index 0000000..fe4a97f --- /dev/null +++ b/AUTHORS @@ -0,0 +1 @@ +Lunzip was written by Antonio Diaz Diaz. diff --git a/COPYING b/COPYING new file mode 100644 index 0000000..4432540 --- /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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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..838387e --- /dev/null +++ b/ChangeLog @@ -0,0 +1,12 @@ +2010-12-17 Antonio Diaz Diaz + + * Version 1.0-rc1 released. + * Initial release. + * Created from the decompression code of clzip 1.1-rc2. + + +Copyright (C) 2010 Antonio Diaz Diaz. + +This file is a collection of facts, and thus it is not copyrightable, +but just in case, you have unlimited permission to copy, distribute and +modify it. diff --git a/INSTALL b/INSTALL new file mode 100644 index 0000000..fdecdff --- /dev/null +++ b/INSTALL @@ -0,0 +1,56 @@ +Requirements +------------ +You will need a C compiler. +I use gcc 4.3.5 and 3.3.6, but the code should compile with any +standards compliant compiler. +Gcc is available at http://gcc.gnu.org. + + +Procedure +--------- +1. Unpack the archive if you have not done so already: + + lzip -cd lunzip[version].tar.lz | tar -xf - +or + gzip -cd lunzip[version].tar.gz | tar -xf - + +This creates the directory ./lunzip[version] containing the source from +the main archive. + +2. Change to lunzip directory and run configure. + (Try `configure --help' for usage instructions). + + cd lunzip[version] + ./configure + +3. Run make. + + make + +4. Optionally, type `make check' to run the tests that come with lunzip. + +5. Type `make install' to install the program and any data files and + documentation. + + +Another way +----------- +You can also compile lunzip 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) 2010 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..4880eb1 --- /dev/null +++ b/Makefile.in @@ -0,0 +1,105 @@ + +DISTNAME = $(pkgname)-$(pkgversion) +INSTALL = install +INSTALL_PROGRAM = $(INSTALL) -p -m 755 +INSTALL_DATA = $(INSTALL) -p -m 644 +INSTALL_DIR = $(INSTALL) -d -m 755 +SHELL = /bin/sh + +objs = carg_parser.o decoder.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) + $(CC) $(LDFLAGS) -o $@ $^ + +$(progname)_profiled : $(objs) + $(CC) $(LDFLAGS) -pg -o $@ $^ + +main.o : main.c + $(CC) $(CPPFLAGS) $(CFLAGS) -DPROGVERSION=\"$(pkgversion)\" -c -o $@ $< + +%.o : %.c + $(CC) $(CPPFLAGS) $(CFLAGS) -c -o $@ $< + +$(objs) : Makefile +carg_parser.o : carg_parser.h +decoder.o : lunzip.h decoder.h +main.o : carg_parser.h lunzip.h decoder.h + + +doc : man + +info : $(VPATH)/doc/$(pkgname).info + +$(VPATH)/doc/$(pkgname).info : $(VPATH)/doc/$(pkgname).texinfo + cd $(VPATH)/doc && makeinfo $(pkgname).texinfo + +man : $(VPATH)/doc/$(progname).1 + +$(VPATH)/doc/$(progname).1 : $(progname) + help2man -n 'small decompressor for lzip files' \ + -o $@ --no-info ./$(progname) + +Makefile : $(VPATH)/configure $(VPATH)/Makefile.in + ./config.status + +check : all + @$(VPATH)/testsuite/check.sh $(VPATH)/testsuite $(pkgversion) + +install : all install-man + if [ ! -d "$(DESTDIR)$(bindir)" ] ; then $(INSTALL_DIR) "$(DESTDIR)$(bindir)" ; fi + $(INSTALL_PROGRAM) ./$(progname) "$(DESTDIR)$(bindir)/$(progname)" + +install-info : + if [ ! -d "$(DESTDIR)$(infodir)" ] ; then $(INSTALL_DIR) "$(DESTDIR)$(infodir)" ; fi + $(INSTALL_DATA) $(VPATH)/doc/$(pkgname).info "$(DESTDIR)$(infodir)/$(pkgname).info" + -install-info --info-dir="$(DESTDIR)$(infodir)" $(DESTDIR)$(infodir)/$(pkgname).info + +install-man : + if [ ! -d "$(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-man + -rm -f "$(DESTDIR)$(bindir)/$(progname)" + +uninstall-info : + -install-info --info-dir="$(DESTDIR)$(infodir)" --remove "$(DESTDIR)$(infodir)/$(pkgname).info" + -rm -f "$(DESTDIR)$(infodir)/$(pkgname).info" + +uninstall-man : + -rm -f "$(DESTDIR)$(mandir)/man1/$(progname).1" + +dist : doc + 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)/testsuite/check.sh \ + $(DISTNAME)/testsuite/test.txt \ + $(DISTNAME)/testsuite/test_v[01].lz \ + $(DISTNAME)/*.h \ + $(DISTNAME)/*.c + 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..3c9f549 --- /dev/null +++ b/NEWS @@ -0,0 +1,5 @@ +Changes in version 1.0: + +Initial release. + +Created from the decompression code of clzip 1.1-rc2. diff --git a/README b/README new file mode 100644 index 0000000..4a5a621 --- /dev/null +++ b/README @@ -0,0 +1,42 @@ +Description + +Lunzip is a decompressor for lzip files. It is written in C and its +small size makes it well suited for embedded devices or software +installers that need to decompress files but do not need compression +capabilities. + +Lunzip replaces every file given in the command line with a decompressed +version of itself. Each decompressed file has the same modification +date, permissions, and, when possible, ownership as the corresponding +compressed file. Lunzip is able to read from some types of non regular +files if the "--stdout" option is specified. + +Lunzip 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 + +If no file names are specified, lunzip decompresses from standard input +to standard output. In this case, lunzip will decline to read compressed +input from a terminal. + +Lunzip 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. + +The amount of memory required by lunzip to decompress a file is only a +few tens of KiB larger than the dictionary size used to compress that +file. + + +Copyright (C) 2010 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 configure +itself. diff --git a/carg_parser.c b/carg_parser.c new file mode 100644 index 0000000..ff14a87 --- /dev/null +++ b/carg_parser.c @@ -0,0 +1,292 @@ +/* Arg_parser - A POSIX/GNU command line argument parser. (C version) + Copyright (C) 2006, 2007, 2008, 2009, 2010 Antonio Diaz Diaz. + + This library 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 library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this library. If not, see . + + As a special exception, you may use this file as part of a free + software library without restriction. Specifically, if other files + instantiate templates or use macros or inline functions from this + file, or you compile this file and link it with other files to + produce an executable, this file does not by itself cause the + resulting executable to be covered by the GNU General Public + License. This exception does not however invalidate any other + reasons why the executable file might be covered by the GNU General + Public License. +*/ + +#include +#include + +#include "carg_parser.h" + + +/* assure at least a minimum size for buffer `buf' */ +static void * ap_resize_buffer( void * buf, const int min_size ) + { + if( buf ) buf = realloc( buf, min_size ); + else buf = malloc( min_size ); + return buf; + } + + +static char push_back_record( struct Arg_parser * const ap, + const int code, const char * const argument ) + { + const int len = strlen( argument ); + struct ap_Record *p; + void * tmp = ap_resize_buffer( ap->data, ( ap->data_size + 1 ) * sizeof (struct ap_Record) ); + if( !tmp ) return 0; + ap->data = (struct ap_Record *)tmp; + p = &(ap->data[ap->data_size]); + p->code = code; + p->argument = 0; + tmp = ap_resize_buffer( p->argument, len + 1 ); + if( !tmp ) return 0; + p->argument = (char *)tmp; + strncpy( p->argument, argument, len + 1 ); + ++ap->data_size; + return 1; + } + + +static char add_error( struct Arg_parser * const ap, const char * const msg ) + { + const int len = strlen( msg ); + void * tmp = ap_resize_buffer( ap->error, ap->error_size + len + 1 ); + if( !tmp ) return 0; + ap->error = (char *)tmp; + strncpy( ap->error + ap->error_size, msg, len + 1 ); + ap->error_size += len; + return 1; + } + + +static void free_data( struct Arg_parser * const ap ) + { + int i; + for( i = 0; i < ap->data_size; ++i ) free( ap->data[i].argument ); + if( ap->data ) { free( ap->data ); ap->data = 0; } + ap->data_size = 0; + } + + +static char parse_long_option( struct Arg_parser * const ap, + const char * const opt, const char * const arg, + const struct ap_Option options[], + int * const argindp ) + { + unsigned int len; + int index = -1; + int i; + char exact = 0, ambig = 0; + + for( len = 0; opt[len+2] && opt[len+2] != '='; ++len ) ; + + /* Test all long options for either exact match or abbreviated matches. */ + for( i = 0; options[i].code != 0; ++i ) + if( options[i].name && !strncmp( options[i].name, &opt[2], len ) ) + { + if( strlen( options[i].name ) == len ) /* Exact match found */ + { index = i; exact = 1; 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 = 1; /* Second or later nonexact match found */ + } + + if( ambig && !exact ) + { + add_error( ap, "option `" ); add_error( ap, opt ); + add_error( ap, "' is ambiguous" ); + return 1; + } + + if( index < 0 ) /* nothing found */ + { + add_error( ap, "unrecognized option `" ); add_error( ap, opt ); + add_error( ap, "'" ); + return 1; + } + + ++*argindp; + + if( opt[len+2] ) /* `--=' syntax */ + { + if( options[index].has_arg == ap_no ) + { + add_error( ap, "option `--" ); add_error( ap, options[index].name ); + add_error( ap, "' doesn't allow an argument" ); + return 1; + } + if( options[index].has_arg == ap_yes && !opt[len+3] ) + { + add_error( ap, "option `--" ); add_error( ap, options[index].name ); + add_error( ap, "' requires an argument" ); + return 1; + } + return push_back_record( ap, options[index].code, &opt[len+3] ); + } + + if( options[index].has_arg == ap_yes ) + { + if( !arg || !arg[0] ) + { + add_error( ap, "option `--" ); add_error( ap, options[index].name ); + add_error( ap, "' requires an argument" ); + return 1; + } + ++*argindp; + return push_back_record( ap, options[index].code, arg ); + } + + return push_back_record( ap, options[index].code, "" ); + } + + +static char parse_short_option( struct Arg_parser * const ap, + const char * const opt, const char * const arg, + const struct ap_Option options[], + int * const argindp ) + { + int cind = 1; /* character index in opt */ + + while( cind > 0 ) + { + int index = -1; + int i; + const unsigned char code = opt[cind]; + char code_str[2]; + code_str[0] = code; code_str[1] = 0; + + if( code != 0 ) + for( i = 0; options[i].code; ++i ) + if( code == options[i].code ) + { index = i; break; } + + if( index < 0 ) + { + add_error( ap, "invalid option -- " ); add_error( ap, code_str ); + return 1; + } + + if( opt[++cind] == 0 ) { ++*argindp; cind = 0; } /* opt finished */ + + if( options[index].has_arg != ap_no && cind > 0 && opt[cind] ) + { + if( !push_back_record( ap, code, &opt[cind] ) ) return 0; + ++*argindp; cind = 0; + } + else if( options[index].has_arg == ap_yes ) + { + if( !arg || !arg[0] ) + { + add_error( ap, "option requires an argument -- " ); + add_error( ap, code_str ); + return 1; + } + ++*argindp; cind = 0; + if( !push_back_record( ap, code, arg ) ) return 0; + } + else if( !push_back_record( ap, code, "" ) ) return 0; + } + return 1; + } + + +char ap_init( struct Arg_parser * const ap, + const int argc, const char * const argv[], + const struct ap_Option options[], const char in_order ) + { + const char ** non_options = 0; /* skipped non-options */ + int non_options_size = 0; /* number of skipped non-options */ + int argind = 1; /* index in argv */ + int i; + + ap->data = 0; + ap->error = 0; + ap->data_size = 0; + ap->error_size = 0; + if( argc < 2 || !argv || !options ) return 1; + + 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( ap, opt, arg, options, &argind ) ) return 0; + } + else if( !parse_short_option( ap, opt, arg, options, &argind ) ) return 0; + if( ap->error ) break; + } + else + { + if( !in_order ) + { + void * tmp = ap_resize_buffer( non_options, + ( non_options_size + 1 ) * sizeof *non_options ); + if( !tmp ) return 0; + non_options = (const char **)tmp; + non_options[non_options_size++] = argv[argind++]; + } + else if( !push_back_record( ap, 0, argv[argind++] ) ) return 0; + } + } + if( ap->error ) free_data( ap ); + else + { + for( i = 0; i < non_options_size; ++i ) + if( !push_back_record( ap, 0, non_options[i] ) ) return 0; + while( argind < argc ) + if( !push_back_record( ap, 0, argv[argind++] ) ) return 0; + } + if( non_options ) free( non_options ); + return 1; + } + + +void ap_free( struct Arg_parser * const ap ) + { + free_data( ap ); + if( ap->error ) { free( ap->error ); ap->error = 0; } + ap->error_size = 0; + } + + +const char * ap_error( const struct Arg_parser * const ap ) + { return ap->error; } + + +int ap_arguments( const struct Arg_parser * const ap ) + { return ap->data_size; } + + +int ap_code( const struct Arg_parser * const ap, const int i ) + { + if( i >= 0 && i < ap_arguments( ap ) ) return ap->data[i].code; + else return 0; + } + + +const char * ap_argument( const struct Arg_parser * const ap, const int i ) + { + if( i >= 0 && i < ap_arguments( ap ) ) return ap->data[i].argument; + else return ""; + } diff --git a/carg_parser.h b/carg_parser.h new file mode 100644 index 0000000..4dccb5f --- /dev/null +++ b/carg_parser.h @@ -0,0 +1,101 @@ +/* Arg_parser - A POSIX/GNU command line argument parser. (C version) + Copyright (C) 2006, 2007, 2008, 2009, 2010 Antonio Diaz Diaz. + + This library 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 library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this library. If not, see . + + As a special exception, you may use this file as part of a free + software library without restriction. Specifically, if other files + instantiate templates or use macros or inline functions from this + file, or you compile this file and link it with other files to + produce an executable, this file does not by itself cause the + resulting executable to be covered by the GNU General Public + License. This exception does not however invalidate any other + reasons why the executable file might be covered by the GNU General + Public License. +*/ + +/* Arg_parser reads the arguments in `argv' and creates a number of + option codes, option arguments and non-option arguments. + + In case of error, `ap_error' returns a non-null pointer to an error + message. + + `options' is an array of `struct ap_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 `ap_init' 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 `--='. +*/ + +#ifdef __cplusplus +extern "C" { +#endif + +enum ap_Has_arg { ap_no, ap_yes, ap_maybe }; + +struct ap_Option + { + int code; /* Short option letter or code ( code != 0 ) */ + const char * name; /* Long option name (maybe null) */ + enum ap_Has_arg has_arg; + }; + + +struct ap_Record + { + int code; + char * argument; + }; + + +struct Arg_parser + { + struct ap_Record * data; + char * error; + int data_size; + int error_size; + }; + + +char ap_init( struct Arg_parser * const ap, + const int argc, const char * const argv[], + const struct ap_Option options[], const char in_order ); + +void ap_free( struct Arg_parser * const ap ); + +const char * ap_error( const struct Arg_parser * const ap ); + + /* The number of arguments parsed (may be different from argc) */ +int ap_arguments( const struct Arg_parser * const ap ); + + /* If ap_code( i ) is 0, ap_argument( i ) is a non-option. + Else ap_argument( i ) is the option's argument (or empty). */ +int ap_code( const struct Arg_parser * const ap, const int i ); + +const char * ap_argument( const struct Arg_parser * const ap, const int i ); + +#ifdef __cplusplus +} +#endif diff --git a/configure b/configure new file mode 100755 index 0000000..a7b8339 --- /dev/null +++ b/configure @@ -0,0 +1,194 @@ +#! /bin/sh +# configure script for Lunzip - Decompressor for lzip files +# Copyright (C) 2010 Antonio Diaz Diaz. +# +# This configure script is free software: you have unlimited permission +# to copy, distribute and modify it. +# +# Date of this version: 2010-12-17 + +args= +no_create= +pkgname=lunzip +pkgversion=1.0-rc1 +progname=lunzip +srctrigger=lunzip.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= +CPPFLAGS= +CFLAGS='-Wall -W -O2' +LDFLAGS= + +# Loop over all args +while [ -n "$1" ] ; 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 " CPPFLAGS=OPTIONS command line options for the preprocessor [${CPPFLAGS}]" + echo " CFLAGS=OPTIONS command line options for the C compiler [${CFLAGS}]" + echo " LDFLAGS=OPTIONS command line options for the linker [${LDFLAGS}]" + echo + exit 0 ;; + --version | --ve* | -V) + echo "Configure script for ${pkgname} version ${pkgversion}" + 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* | --inf*) + 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=${optarg} ;; + CPPFLAGS=*) CPPFLAGS=${optarg} ;; + CFLAGS=*) CFLAGS=${optarg} ;; + LDFLAGS=*) LDFLAGS=${optarg} ;; + + --* | *=* | *-*-*) ;; + *) + echo "configure: Unrecognized option: \"${option}\"; use --help for usage." 1>&2 + exit 1 ;; + esac +done + +# Find the source files, if location was not specified. +srcdirtext= +if [ -z "${srcdir}" ] ; 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 ${srcdir} ; pwd`" ] ; then srcdir=. ; fi + +# checking whether we are using GNU C. +if [ -z "${CC}" ] ; 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 + +echo +if [ -z "${no_create}" ] ; 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 "CPPFLAGS = ${CPPFLAGS}" +echo "CFLAGS = ${CFLAGS}" +echo "LDFLAGS = ${LDFLAGS}" +rm -f Makefile +cat > Makefile << EOF +# Makefile for Lunzip - Decompressor for lzip files +# Copyright (C) 2010 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. + +pkgname = ${pkgname} +pkgversion = ${pkgversion} +progname = ${progname} +VPATH = ${srcdir} +prefix = ${prefix} +exec_prefix = ${exec_prefix} +bindir = ${bindir} +datadir = ${datadir} +infodir = ${infodir} +mandir = ${mandir} +sysconfdir = ${sysconfdir} +CC = ${CC} +CPPFLAGS = ${CPPFLAGS} +CFLAGS = ${CFLAGS} +LDFLAGS = ${LDFLAGS} +EOF +cat ${srcdir}/Makefile.in >> Makefile + +echo "OK. Now you can run make." diff --git a/decoder.c b/decoder.c new file mode 100644 index 0000000..e6af722 --- /dev/null +++ b/decoder.c @@ -0,0 +1,248 @@ +/* Lunzip - Decompressor for lzip files + Copyright (C) 2010 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 "lunzip.h" +#include "decoder.h" + + +CRC32 crc32; + +bool Rd_read_block( struct Range_decoder * const rdec ) + { + if( !rdec->at_stream_end ) + { + rdec->stream_pos = readblock( rdec->infd, rdec->buffer, rd_buffer_size ); + if( rdec->stream_pos != rd_buffer_size && errno ) + { show_error( "Read error", errno, false ); cleanup_and_fail( 1 ); } + rdec->at_stream_end = ( rdec->stream_pos < rd_buffer_size ); + rdec->partial_member_pos += rdec->pos; + rdec->pos = 0; + } + return rdec->pos < rdec->stream_pos; + } + + +void LZd_flush_data( struct LZ_decoder * const decoder ) + { + const int size = decoder->pos - decoder->stream_pos; + if( size > 0 ) + { + CRC32_update_buf( &decoder->crc_, decoder->buffer + decoder->stream_pos, size ); + if( decoder->outfd >= 0 && + writeblock( decoder->outfd, decoder->buffer + decoder->stream_pos, size ) != size ) + { show_error( "write error", errno, false ); cleanup_and_fail( 1 ); } + if( decoder->pos >= decoder->buffer_size ) + { decoder->partial_data_pos += decoder->pos; decoder->pos = 0; } + decoder->stream_pos = decoder->pos; + } + } + + +bool LZd_verify_trailer( struct LZ_decoder * const decoder, + struct Pretty_print * const pp ) + { + int i; + File_trailer trailer; + const int trailer_size = Ft_versioned_size( decoder->member_version ); + const long long member_size = + Rd_member_position( decoder->range_decoder ) + trailer_size; + bool error = false; + + for( i = 0; i < trailer_size && !error; ++i ) + { + if( !Rd_finished( decoder->range_decoder ) ) + trailer[i] = Rd_get_byte( decoder->range_decoder ); + else + { + error = true; + if( pp->verbosity >= 0 ) + { + Pp_show_msg( pp, 0 ); + fprintf( stderr, "Trailer truncated at trailer position %d;" + " some checks may fail.\n", i ); + } + for( ; i < trailer_size; ++i ) trailer[i] = 0; + } + } + if( decoder->member_version == 0 ) Ft_set_member_size( trailer, member_size ); + if( !Rd_code_is_zero( decoder->range_decoder ) ) + { + error = true; + Pp_show_msg( pp, "Range decoder final code is not zero" ); + } + if( Ft_get_data_crc( trailer ) != LZd_crc( decoder ) ) + { + error = true; + if( pp->verbosity >= 0 ) + { + Pp_show_msg( pp, 0 ); + fprintf( stderr, "CRC mismatch; trailer says %08X, data CRC is %08X.\n", + (unsigned int)Ft_get_data_crc( trailer ), + (unsigned int)LZd_crc( decoder ) ); + } + } + if( Ft_get_data_size( trailer ) != LZd_data_position( decoder ) ) + { + error = true; + if( pp->verbosity >= 0 ) + { + Pp_show_msg( pp, 0 ); + fprintf( stderr, "Data size mismatch; trailer says %lld, data size is %lld (0x%llX).\n", + Ft_get_data_size( trailer ), LZd_data_position( decoder ), LZd_data_position( decoder ) ); + } + } + if( Ft_get_member_size( trailer ) != member_size ) + { + error = true; + if( pp->verbosity >= 0 ) + { + Pp_show_msg( pp, 0 ); + fprintf( stderr, "Member size mismatch; trailer says %lld, member size is %lld (0x%llX).\n", + Ft_get_member_size( trailer ), member_size, member_size ); + } + } + if( !error && pp->verbosity >= 4 && LZd_data_position( decoder ) > 0 && member_size > 0 ) + fprintf( stderr, "%6.3f:1, %6.3f bits/byte, %5.2f%% saved. ", + (double)LZd_data_position( decoder ) / member_size, + ( 8.0 * member_size ) / LZd_data_position( decoder ), + 100.0 * ( 1.0 - ( (double)member_size / LZd_data_position( decoder ) ) ) ); + if( !error && pp->verbosity >= 3 ) + fprintf( stderr, "data CRC %08X, data size %9lld, member size %8lld. ", + (unsigned int)Ft_get_data_crc( trailer ), + Ft_get_data_size( trailer ), Ft_get_member_size( trailer ) ); + return !error; + } + + +/* Return value: 0 = OK, 1 = decoder error, 2 = unexpected EOF, + 3 = trailer error, 4 = unknown marker found. */ +int LZd_decode_member( struct LZ_decoder * const decoder, + struct Pretty_print * const pp ) + { + unsigned int rep0 = 0; /* rep[0-3] latest four distances */ + unsigned int rep1 = 0; /* used for efficient coding of */ + unsigned int rep2 = 0; /* repeated distances */ + unsigned int rep3 = 0; + State state = 0; + Rd_load( decoder->range_decoder ); + + while( true ) + { + const int pos_state = LZd_data_position( decoder ) & pos_state_mask; + if( Rd_finished( decoder->range_decoder ) ) + { LZd_flush_data( decoder ); return 2; } + if( Rd_decode_bit( decoder->range_decoder, &decoder->bm_match[state][pos_state] ) == 0 ) + { + const uint8_t prev_byte = LZd_get_prev_byte( decoder ); + if( St_is_char( state ) ) + LZd_put_byte( decoder, Lid_decode( &decoder->literal_decoder, + decoder->range_decoder, prev_byte ) ); + else + LZd_put_byte( decoder, Lid_decode_matched( &decoder->literal_decoder, + decoder->range_decoder, prev_byte, LZd_get_byte( decoder, rep0 ) ) ); + St_set_char( &state ); + } + else + { + int len; + if( Rd_decode_bit( decoder->range_decoder, &decoder->bm_rep[state] ) == 1 ) + { + len = 0; + if( Rd_decode_bit( decoder->range_decoder, &decoder->bm_rep0[state] ) == 1 ) + { + unsigned int distance; + if( Rd_decode_bit( decoder->range_decoder, &decoder->bm_rep1[state] ) == 0 ) + distance = rep1; + else + { + if( Rd_decode_bit( decoder->range_decoder, &decoder->bm_rep2[state] ) == 0 ) + distance = rep2; + else { distance = rep3; rep3 = rep2; } + rep2 = rep1; + } + rep1 = rep0; + rep0 = distance; + } + else + { + if( Rd_decode_bit( decoder->range_decoder, &decoder->bm_len[state][pos_state] ) == 0 ) + { St_set_short_rep( &state ); len = 1; } + } + if( len == 0 ) + { + St_set_rep( &state ); + len = min_match_len + Led_decode( &decoder->rep_match_len_decoder, decoder->range_decoder, pos_state ); + } + } + else + { + int dis_slot; + const unsigned int rep0_saved = rep0; + len = min_match_len + Led_decode( &decoder->len_decoder, decoder->range_decoder, pos_state ); + dis_slot = Rd_decode_tree( decoder->range_decoder, decoder->bm_dis_slot[get_dis_state(len)], dis_slot_bits ); + if( dis_slot < start_dis_model ) rep0 = dis_slot; + else + { + const int direct_bits = ( dis_slot >> 1 ) - 1; + rep0 = ( 2 | ( dis_slot & 1 ) ) << direct_bits; + if( dis_slot < end_dis_model ) + rep0 += Rd_decode_tree_reversed( decoder->range_decoder, decoder->bm_dis + rep0 - dis_slot, direct_bits ); + else + { + rep0 += Rd_decode( decoder->range_decoder, direct_bits - dis_align_bits ) << dis_align_bits; + rep0 += Rd_decode_tree_reversed( decoder->range_decoder, decoder->bm_align, dis_align_bits ); + if( rep0 == 0xFFFFFFFFU ) /* Marker found */ + { + rep0 = rep0_saved; + Rd_normalize( decoder->range_decoder ); + LZd_flush_data( decoder ); + if( len == min_match_len ) /* End Of Stream marker */ + { + if( LZd_verify_trailer( decoder, pp ) ) return 0; else return 3; + } + if( len == min_match_len + 1 ) /* Sync Flush marker */ + { + Rd_load( decoder->range_decoder ); continue; + } + if( pp->verbosity >= 0 ) + { + Pp_show_msg( pp, 0 ); + fprintf( stderr, "Unsupported marker code `%d'.\n", len ); + } + return 4; + } + } + } + rep3 = rep2; rep2 = rep1; rep1 = rep0_saved; + St_set_match( &state ); + if( rep0 >= (unsigned int)decoder->dictionary_size || + ( rep0 >= (unsigned int)decoder->pos && !decoder->partial_data_pos ) ) + { LZd_flush_data( decoder ); return 1; } + } + LZd_copy_block( decoder, rep0, len ); + } + } + } diff --git a/decoder.h b/decoder.h new file mode 100644 index 0000000..efb9472 --- /dev/null +++ b/decoder.h @@ -0,0 +1,380 @@ +/* Lunzip - Decompressor for lzip files + Copyright (C) 2010 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 . +*/ + +enum { rd_buffer_size = 16384 }; + +struct Range_decoder + { + long long partial_member_pos; + uint8_t * buffer; /* input buffer */ + int pos; /* current pos in buffer */ + int stream_pos; /* when reached, a new block must be read */ + uint32_t code; + uint32_t range; + int infd; /* input file descriptor */ + bool at_stream_end; + }; + +bool Rd_read_block( struct Range_decoder * const rdec ); + +static inline void Rd_init( struct Range_decoder * const rdec, const int ifd ) + { + rdec->partial_member_pos = 0; + rdec->buffer = (uint8_t *)malloc( rd_buffer_size ); + if( !rdec->buffer ) + { + show_error( "Not enough memory. Find a machine with more memory.", 0, false ); + cleanup_and_fail( 1 ); + } + rdec->pos = 0; + rdec->stream_pos = 0; + rdec->code = 0; + rdec->range = 0xFFFFFFFFU; + rdec->infd = ifd; + rdec->at_stream_end = false; + } + +static inline void Rd_free( struct Range_decoder * const rdec ) + { free( rdec->buffer ); rdec->buffer = 0; } + +static inline bool Rd_code_is_zero( struct Range_decoder * const rdec ) + { return ( rdec->code == 0 ); } + +static inline bool Rd_finished( struct Range_decoder * const rdec ) + { return rdec->pos >= rdec->stream_pos && !Rd_read_block( rdec ); } + +static inline long long Rd_member_position( struct Range_decoder * const rdec ) + { return rdec->partial_member_pos + rdec->pos; } + +static inline void Rd_reset_member_position( struct Range_decoder * const rdec ) + { rdec->partial_member_pos = -rdec->pos; } + +static inline uint8_t Rd_get_byte( struct Range_decoder * const rdec ) + { + if( Rd_finished( rdec ) ) return 0; + return rdec->buffer[rdec->pos++]; + } + +static inline void Rd_load( struct Range_decoder * const rdec ) + { + int i; + rdec->code = 0; + rdec->range = 0xFFFFFFFFU; + for( i = 0; i < 5; ++i ) + rdec->code = (rdec->code << 8) | Rd_get_byte( rdec ); + } + +static inline void Rd_normalize( struct Range_decoder * const rdec ) + { + if( rdec->range <= 0x00FFFFFFU ) + { + rdec->range <<= 8; + rdec->code = (rdec->code << 8) | Rd_get_byte( rdec ); + } + } + +static inline int Rd_decode( struct Range_decoder * const rdec, + const int num_bits ) + { + int symbol = 0; + int i; + for( i = num_bits; i > 0; --i ) + { + symbol <<= 1; + if( rdec->range <= 0x00FFFFFFU ) + { + rdec->range <<= 7; + rdec->code = (rdec->code << 8) | Rd_get_byte( rdec ); + if( rdec->code >= rdec->range ) + { rdec->code -= rdec->range; symbol |= 1; } + } + else + { + rdec->range >>= 1; + if( rdec->code >= rdec->range ) + { rdec->code -= rdec->range; symbol |= 1; } + } + } + return symbol; + } + +static inline int Rd_decode_bit( struct Range_decoder * const rdec, + Bit_model * const probability ) + { + uint32_t bound; + Rd_normalize( rdec ); + bound = ( rdec->range >> bit_model_total_bits ) * *probability; + if( rdec->code < bound ) + { + rdec->range = bound; + *probability += (bit_model_total - *probability) >> bit_model_move_bits; + return 0; + } + else + { + rdec->range -= bound; + rdec->code -= bound; + *probability -= *probability >> bit_model_move_bits; + return 1; + } + } + +static inline int Rd_decode_tree( struct Range_decoder * const rdec, + Bit_model bm[], const int num_bits ) + { + int model = 1; + int i; + for( i = num_bits; i > 0; --i ) + model = ( model << 1 ) | Rd_decode_bit( rdec, &bm[model] ); + return model - (1 << num_bits); + } + +static inline int Rd_decode_tree_reversed( struct Range_decoder * const rdec, + Bit_model bm[], const int num_bits ) + { + int model = 1; + int symbol = 0; + int i; + for( i = 0; i < num_bits; ++i ) + { + const int bit = Rd_decode_bit( rdec, &bm[model] ); + model <<= 1; + if( bit ) { model |= 1; symbol |= (1 << i); } + } + return symbol; + } + +static inline int Rd_decode_matched( struct Range_decoder * const rdec, + Bit_model bm[], const int match_byte ) + { + Bit_model * const bm1 = bm + 0x100; + int symbol = 1; + int i; + for( i = 7; i >= 0; --i ) + { + const int match_bit = ( match_byte >> i ) & 1; + const int bit = Rd_decode_bit( rdec, &bm1[(match_bit<<8)+symbol] ); + symbol = ( symbol << 1 ) | bit; + if( match_bit != bit ) + { + while( --i >= 0 ) + symbol = ( symbol << 1 ) | Rd_decode_bit( rdec, &bm[symbol] ); + break; + } + } + return symbol & 0xFF; + } + + +struct Len_decoder + { + Bit_model choice1; + Bit_model choice2; + Bit_model bm_low[pos_states][len_low_symbols]; + Bit_model bm_mid[pos_states][len_mid_symbols]; + Bit_model bm_high[len_high_symbols]; + }; + +static inline void Led_init( struct Len_decoder * const len_decoder ) + { + int i, j; + Bm_init( &len_decoder->choice1 ); + Bm_init( &len_decoder->choice2 ); + for( i = 0; i < pos_states; ++i ) + for( j = 0; j < len_low_symbols; ++j ) + Bm_init( &len_decoder->bm_low[i][j] ); + for( i = 0; i < pos_states; ++i ) + for( j = 0; j < len_mid_symbols; ++j ) + Bm_init( &len_decoder->bm_mid[i][j] ); + for( i = 0; i < len_high_symbols; ++i ) + Bm_init( &len_decoder->bm_high[i] ); + } + +static inline int Led_decode( struct Len_decoder * const len_decoder, + struct Range_decoder * const rdec, + const int pos_state ) + { + if( Rd_decode_bit( rdec, &len_decoder->choice1 ) == 0 ) + return Rd_decode_tree( rdec, len_decoder->bm_low[pos_state], len_low_bits ); + if( Rd_decode_bit( rdec, &len_decoder->choice2 ) == 0 ) + return len_low_symbols + + Rd_decode_tree( rdec, len_decoder->bm_mid[pos_state], len_mid_bits ); + return len_low_symbols + len_mid_symbols + + Rd_decode_tree( rdec, len_decoder->bm_high, len_high_bits ); + } + + +struct Literal_decoder + { + Bit_model bm_literal[1<bm_literal[i][j] ); + } + +static inline int Lid_state( const int prev_byte ) + { return ( prev_byte >> ( 8 - literal_context_bits ) ); } + +static inline uint8_t Lid_decode( struct Literal_decoder * const literal_decoder, + struct Range_decoder * const rdec, + const uint8_t prev_byte ) + { return Rd_decode_tree( rdec, literal_decoder->bm_literal[Lid_state(prev_byte)], 8 ); } + +static inline uint8_t Lid_decode_matched( struct Literal_decoder * const literal_decoder, + struct Range_decoder * const rdec, + const uint8_t prev_byte, + const uint8_t match_byte ) + { return Rd_decode_matched( rdec, literal_decoder->bm_literal[Lid_state(prev_byte)], match_byte ); } + + +struct LZ_decoder + { + long long partial_data_pos; + int dictionary_size; + int buffer_size; + uint8_t * buffer; /* output buffer */ + int pos; /* current pos in buffer */ + int stream_pos; /* first byte not yet written to file */ + uint32_t crc_; + int outfd; /* output file descriptor */ + int member_version; + + Bit_model bm_match[states][pos_states]; + Bit_model bm_rep[states]; + Bit_model bm_rep0[states]; + Bit_model bm_rep1[states]; + Bit_model bm_rep2[states]; + Bit_model bm_len[states][pos_states]; + Bit_model bm_dis_slot[max_dis_states][1<pos > 0 ) ? decoder->pos : decoder->buffer_size ) - 1; + return decoder->buffer[i]; + } + +static inline uint8_t LZd_get_byte( struct LZ_decoder * const decoder, + const int distance ) + { + int i = decoder->pos - distance - 1; + if( i < 0 ) i += decoder->buffer_size; + return decoder->buffer[i]; + } + +static inline void LZd_put_byte( struct LZ_decoder * const decoder, + const uint8_t b ) + { + decoder->buffer[decoder->pos] = b; + if( ++decoder->pos >= decoder->buffer_size ) LZd_flush_data( decoder ); + } + +static inline void LZd_copy_block( struct LZ_decoder * const decoder, + const int distance, int len ) + { + int i = decoder->pos - distance - 1; + if( i < 0 ) i += decoder->buffer_size; + if( len < decoder->buffer_size - max( decoder->pos, i ) && + len <= abs( decoder->pos - i ) ) + { + memcpy( decoder->buffer + decoder->pos, decoder->buffer + i, len ); + decoder->pos += len; + } + else for( ; len > 0 ; --len ) + { + decoder->buffer[decoder->pos] = decoder->buffer[i]; + if( ++decoder->pos >= decoder->buffer_size ) LZd_flush_data( decoder ); + if( ++i >= decoder->buffer_size ) i = 0; + } + } + +static inline void LZd_init( struct LZ_decoder * const decoder, + const File_header header, + struct Range_decoder * const rdec, const int ofd ) + { + int i, j; + decoder->partial_data_pos = 0; + decoder->dictionary_size = Fh_get_dictionary_size( header ); + decoder->buffer_size = max( 65536, decoder->dictionary_size ); + decoder->buffer = (uint8_t *)malloc( decoder->buffer_size ); + if( !decoder->buffer ) + { + show_error( "Not enough memory. Find a machine with more memory.", 0, false ); + cleanup_and_fail( 1 ); + } + decoder->pos = 0; + decoder->stream_pos = 0; + decoder->crc_ = 0xFFFFFFFFU; + decoder->outfd = ofd; + decoder->member_version = Fh_version( header ); + + for( i = 0; i < states; ++i ) + { + for( j = 0; j < pos_states; ++j ) + { + Bm_init( &decoder->bm_match[i][j] ); + Bm_init( &decoder->bm_len[i][j] ); + } + Bm_init( &decoder->bm_rep[i] ); + Bm_init( &decoder->bm_rep0[i] ); + Bm_init( &decoder->bm_rep1[i] ); + Bm_init( &decoder->bm_rep2[i] ); + } + for( i = 0; i < max_dis_states; ++i ) + for( j = 0; j < 1<bm_dis_slot[i][j] ); + for( i = 0; i < modeled_distances-end_dis_model+1; ++i ) + Bm_init( &decoder->bm_dis[i] ); + for( i = 0; i < dis_align_size; ++i ) + Bm_init( &decoder->bm_align[i] ); + + decoder->range_decoder = rdec; + Led_init( &decoder->len_decoder ); + Led_init( &decoder->rep_match_len_decoder ); + Lid_init( &decoder->literal_decoder ); + decoder->buffer[decoder->buffer_size-1] = 0; /* prev_byte of first_byte */ + } + +static inline void LZd_free( struct LZ_decoder * const decoder ) + { free( decoder->buffer ); decoder->buffer = 0; } + +static inline uint32_t LZd_crc( struct LZ_decoder * const decoder ) + { return decoder->crc_ ^ 0xFFFFFFFFU; } + +static inline long long LZd_data_position( struct LZ_decoder * const decoder ) + { return decoder->partial_data_pos + decoder->pos; } + +int LZd_decode_member( struct LZ_decoder * const decoder, + struct Pretty_print * const pp ); diff --git a/doc/lunzip.1 b/doc/lunzip.1 new file mode 100644 index 0000000..c8e20df --- /dev/null +++ b/doc/lunzip.1 @@ -0,0 +1,53 @@ +.\" DO NOT MODIFY THIS FILE! It was generated by help2man 1.37.1. +.TH LUNZIP "1" "December 2010" "Lunzip 1.0-rc1" "User Commands" +.SH NAME +Lunzip \- small decompressor for lzip files +.SH SYNOPSIS +.B lunzip +[\fIoptions\fR] [\fIfiles\fR] +.SH DESCRIPTION +Lunzip \- Decompressor for lzip files. +.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\-f\fR, \fB\-\-force\fR +overwrite existing output files +.TP +\fB\-k\fR, \fB\-\-keep\fR +keep (don't delete) input files +.TP +\fB\-o\fR, \fB\-\-output=\fR +if reading stdin, place the output into +.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) +.PP +If no file names are given, lunzip decompresses from standard input to +standard output. +.SH "REPORTING BUGS" +Report bugs to lzip\-bug@nongnu.org +.br +Lunzip home page: http://www.nongnu.org/lzip/lunzip.html +.SH COPYRIGHT +Copyright \(co 2010 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. diff --git a/lunzip.h b/lunzip.h new file mode 100644 index 0000000..52b0f27 --- /dev/null +++ b/lunzip.h @@ -0,0 +1,280 @@ +/* Lunzip - Decompressor for lzip files + Copyright (C) 2010 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 . +*/ + +#ifndef max + #define max(x,y) ((x) >= (y) ? (x) : (y)) +#endif +#ifndef min + #define min(x,y) ((x) <= (y) ? (x) : (y)) +#endif + +typedef unsigned char State; + +enum { states = 12 }; + +static inline bool St_is_char( const State st ) { return st < 7; } + +static inline void St_set_char( State * const st ) + { + static const unsigned char next[states] = + { 0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 4, 5 }; + *st = next[*st]; + } + +static inline void St_set_match( State * const st ) + { + static const unsigned char next[states] = + { 7, 7, 7, 7, 7, 7, 7, 10, 10, 10, 10, 10 }; + *st = next[*st]; + } + +static inline void St_set_rep( State * const st ) + { + static const unsigned char next[states] = + { 8, 8, 8, 8, 8, 8, 8, 11, 11, 11, 11, 11 }; + *st = next[*st]; + } + +static inline void St_set_short_rep( State * const st ) + { + static const unsigned char next[states] = + { 9, 9, 9, 9, 9, 9, 9, 11, 11, 11, 11, 11 }; + *st = next[*st]; + } + +enum { + min_dictionary_bits = 12, + min_dictionary_size = 1 << min_dictionary_bits, + max_dictionary_bits = 29, + max_dictionary_size = 1 << max_dictionary_bits, + literal_context_bits = 3, + pos_state_bits = 2, + pos_states = 1 << pos_state_bits, + pos_state_mask = pos_states - 1, + + dis_slot_bits = 6, + start_dis_model = 4, + end_dis_model = 14, + modeled_distances = 1 << (end_dis_model / 2), + dis_align_bits = 4, + dis_align_size = 1 << dis_align_bits, + + len_low_bits = 3, + len_mid_bits = 3, + len_high_bits = 8, + len_low_symbols = 1 << len_low_bits, + len_mid_symbols = 1 << len_mid_bits, + len_high_symbols = 1 << len_high_bits, + max_len_symbols = len_low_symbols + len_mid_symbols + len_high_symbols, + + min_match_len = 2, /* must be 2 */ + max_match_len = min_match_len + max_len_symbols - 1, /* 273 */ + min_match_len_limit = 5, + + max_dis_states = 4 }; + +static inline int get_dis_state( int len ) + { + len -= min_match_len; + if( len >= max_dis_states ) len = max_dis_states - 1; + return len; + } + + +enum { bit_model_move_bits = 5, + bit_model_total_bits = 11, + bit_model_total = 1 << bit_model_total_bits }; + +typedef unsigned int Bit_model; + +static inline void Bm_init( Bit_model * const probability ) + { *probability = bit_model_total / 2; } + + +struct Pretty_print + { + const char * name_; + const char * stdin_name; + int longest_name; + int verbosity; + bool first_post; + }; + +void Pp_init( struct Pretty_print * const pp, const char * const filenames[], + const int num_filenames, const int v ); + +static inline void Pp_set_name( struct Pretty_print * const pp, + const char * const filename ) + { + if( filename && filename[0] && strcmp( filename, "-" ) ) + pp->name_ = filename; + else pp->name_ = pp->stdin_name; + pp->first_post = true; + } + +static inline void Pp_reset( struct Pretty_print * const pp ) + { if( pp->name_ && pp->name_[0] ) pp->first_post = true; } +void Pp_show_msg( struct Pretty_print * const pp, const char * const msg ); + + +typedef uint32_t CRC32[256]; /* Table of CRCs of all 8-bit messages. */ + +extern CRC32 crc32; + +static inline void CRC32_init() + { + unsigned int n; + for( n = 0; n < 256; ++n ) + { + unsigned int c = n; + int k; + for( k = 0; k < 8; ++k ) + { if( c & 1 ) c = 0xEDB88320U ^ ( c >> 1 ); else c >>= 1; } + crc32[n] = c; + } + } + +static inline void CRC32_update_byte( uint32_t * crc, const uint8_t byte ) + { *crc = crc32[(*crc^byte)&0xFF] ^ ( *crc >> 8 ); } +static inline void CRC32_update_buf( uint32_t * crc, const uint8_t * const buffer, + const int size ) + { + int i; + for( i = 0; i < size; ++i ) + *crc = crc32[(*crc^buffer[i])&0xFF] ^ ( *crc >> 8 ); + } + + +static inline int real_bits( const int value ) + { + int bits = 0, i, mask; + for( i = 1, mask = 1; mask > 0; ++i, mask <<= 1 ) + if( value & mask ) bits = i; + return bits; + } + + +static const uint8_t magic_string[4] = { 'L', 'Z', 'I', 'P' }; + +typedef uint8_t File_header[6]; /* 0-3 magic bytes */ + /* 4 version */ + /* 5 coded_dict_size; */ +enum { Fh_size = 6 }; + +static inline void Fh_set_magic( File_header data ) + { + memcpy( data, magic_string, 4 ); + data[4] = 1; + } + +static inline bool Fh_verify_magic( const File_header data ) + { + return ( memcmp( data, magic_string, 4 ) == 0 ); + } + +static inline uint8_t Fh_version( const File_header data ) + { return data[4]; } + +static inline bool Fh_verify_version( const File_header data ) + { return ( data[4] <= 1 ); } + +static inline int Fh_get_dictionary_size( const File_header data ) + { + int sz = ( 1 << ( data[5] & 0x1F ) ); + if( sz > min_dictionary_size && sz <= max_dictionary_size ) + sz -= ( sz / 16 ) * ( ( data[5] >> 5 ) & 0x07 ); + return sz; + } + +static inline bool Fh_set_dictionary_size( File_header data, const int sz ) + { + if( sz >= min_dictionary_size && sz <= max_dictionary_size ) + { + data[5] = real_bits( sz - 1 ); + if( sz > min_dictionary_size ) + { + const int base_size = 1 << data[5]; + const int wedge = base_size / 16; + int i; + for( i = 7; i >= 1; --i ) + if( base_size - ( i * wedge ) >= sz ) + { data[5] |= ( i << 5 ); break; } + } + return true; + } + return false; + } + + +typedef uint8_t File_trailer[20]; + /* 0-3 CRC32 of the uncompressed data */ + /* 4-11 size of the uncompressed data */ + /* 12-19 member size including header and trailer */ + +enum { Ft_size = 20 }; + +static inline int Ft_versioned_size( const int version ) + { return ( ( version >= 1 ) ? 20 : 12 ); } + +static inline uint32_t Ft_get_data_crc( const File_trailer data ) + { + uint32_t tmp = 0; + int i; + for( i = 3; i >= 0; --i ) { tmp <<= 8; tmp += data[i]; } + return tmp; + } + +static inline void Ft_set_data_crc( File_trailer data, uint32_t crc ) + { + int i; + for( i = 0; i <= 3; ++i ) { data[i] = (uint8_t)crc; crc >>= 8; } + } + +static inline long long Ft_get_data_size( const File_trailer data ) + { + long long tmp = 0; + int i; + for( i = 11; i >= 4; --i ) { tmp <<= 8; tmp += data[i]; } + return tmp; + } + +static inline void Ft_set_data_size( File_trailer data, long long sz ) + { + int i; + for( i = 4; i <= 11; ++i ) { data[i] = (uint8_t)sz; sz >>= 8; } + } + +static inline long long Ft_get_member_size( const File_trailer data ) + { + long long tmp = 0; + int i; + for( i = 19; i >= 12; --i ) { tmp <<= 8; tmp += data[i]; } + return tmp; + } + +static inline void Ft_set_member_size( File_trailer data, long long sz ) + { + int i; + for( i = 12; i <= 19; ++i ) { data[i] = (uint8_t)sz; sz >>= 8; } + } + + +/* defined in main.c */ +void cleanup_and_fail( const int retval ); +void show_error( const char * const msg, const int errcode, const bool help ); +int readblock( const int fd, uint8_t * const buf, const int size ); +int writeblock( const int fd, const uint8_t * const buf, const int size ); diff --git a/main.c b/main.c new file mode 100644 index 0000000..11d733b --- /dev/null +++ b/main.c @@ -0,0 +1,657 @@ +/* Lunzip - Decompressor for lzip files + Copyright (C) 2010 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 lunzip to panic. +*/ + +#define _FILE_OFFSET_BITS 64 + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#if defined(__MSVCRT__) +#include +#define fchmod(x,y) 0 +#define fchown(x,y,z) 0 +#define SIGHUP SIGTERM +#define S_ISSOCK(x) 0 +#define S_IRGRP 0 +#define S_IWGRP 0 +#define S_IROTH 0 +#define S_IWOTH 0 +#endif +#if defined(__OS2__) +#include +#endif + +#include "carg_parser.h" +#include "lunzip.h" +#include "decoder.h" + +#if CHAR_BIT != 8 +#error "Environments where CHAR_BIT != 8 are not supported." +#endif + +long long int llabs( long long int number ); + + +const char * const Program_name = "Lunzip"; +const char * const program_name = "lunzip"; +const char * const program_year = "2010"; +const char * invocation_name = 0; + +#ifdef O_BINARY +const int o_binary = O_BINARY; +#else +const int o_binary = 0; +#endif + +struct { const char * from; const char * to; } const known_extensions[] = { + { ".lz", "" }, + { ".tlz", ".tar" }, + { 0, 0 } }; + +char * output_filename = 0; +int outfd = -1; +int verbosity = 0; +mode_t outfd_mode = S_IRUSR | S_IWUSR; +bool delete_output_on_interrupt = false; + + +/* assure at least a minimum size for buffer `buf' */ +static void * resize_buffer( void * buf, const int min_size ) + { + if( buf ) buf = realloc( buf, min_size ); + else buf = malloc( min_size ); + if( !buf ) + { + show_error( "Not enough memory.", 0, false ); + cleanup_and_fail( 1 ); + } + return buf; + } + + +static void show_help() + { + printf( "%s - Decompressor for lzip files.\n", Program_name ); + printf( "\nUsage: %s [options] [files]\n", invocation_name ); + printf( "\nOptions:\n" ); + printf( " -h, --help display this help and exit\n" ); + printf( " -V, --version output version information and exit\n" ); + printf( " -c, --stdout send output to standard output\n" ); + printf( " -d, --decompress decompress\n" ); + printf( " -f, --force overwrite existing output files\n" ); + printf( " -k, --keep keep (don't delete) input files\n" ); + printf( " -o, --output= if reading stdin, place the output into \n" ); + printf( " -q, --quiet suppress all messages\n" ); + printf( " -t, --test test compressed file integrity\n" ); + printf( " -v, --verbose be verbose (a 2nd -v gives more)\n" ); + printf( "If no file names are given, %s decompresses from standard input to\n", program_name ); + printf( "standard output.\n" ); + printf( "\nReport bugs to lzip-bug@nongnu.org\n" ); + printf( "Lunzip home page: http://www.nongnu.org/lzip/lunzip.html\n" ); + } + + +static void show_version() + { + printf( "%s %s\n", Program_name, PROGVERSION ); + printf( "Copyright (C) %s Antonio Diaz Diaz.\n", program_year ); + printf( "License GPLv3+: GNU GPL version 3 or later \n" ); + printf( "This is free software: you are free to change and redistribute it.\n" ); + printf( "There is NO WARRANTY, to the extent permitted by law.\n" ); + } + + +static const char * format_num( long long num ) + { + const char * const prefix[8] = + { "Ki", "Mi", "Gi", "Ti", "Pi", "Ei", "Zi", "Yi" }; + enum { buf_size = 16, factor = 1024 }; + static char buf[buf_size]; + const char *p = ""; + int i; + + for( i = 0; i < 8 && ( llabs( num ) > 9999 || + ( llabs( num ) >= factor && num % factor == 0 ) ); ++i ) + { num /= factor; p = prefix[i]; } + snprintf( buf, buf_size, "%lld %s", num, p ); + return buf; + } + + +static int open_instream( const char * const name, + struct stat * const in_statsp, const bool to_stdout ) + { + int infd = -1; + infd = open( name, O_RDONLY | o_binary ); + if( infd < 0 ) + { + if( verbosity >= 0 ) + fprintf( stderr, "%s: Can't open input file `%s': %s.\n", + program_name, name, strerror( errno ) ); + } + else + { + const int i = fstat( infd, in_statsp ); + const mode_t mode = in_statsp->st_mode; + const bool can_read = ( i == 0 && + ( S_ISBLK( mode ) || S_ISCHR( mode ) || + S_ISFIFO( mode ) || S_ISSOCK( mode ) ) ); + if( i != 0 || ( !S_ISREG( mode ) && ( !to_stdout || !can_read ) ) ) + { + if( verbosity >= 0 ) + fprintf( stderr, "%s: Input file `%s' is not a regular file%s.\n", + program_name, name, + ( can_read && !to_stdout ) ? + " and `--stdout' was not specified" : "" ); + close( infd ); + infd = -1; + } + } + return infd; + } + + +static int extension_index( const char * const name ) + { + int i; + for( i = 0; known_extensions[i].from; ++i ) + { + const char * const ext = known_extensions[i].from; + if( strlen( name ) > strlen( ext ) && + strncmp( name + strlen( name ) - strlen( ext ), ext, strlen( ext ) ) == 0 ) + return i; + } + return -1; + } + + +static void set_d_outname( const char * const name ) + { + const int i = extension_index( name ); + if( i >= 0 ) + { + const char * const from = known_extensions[i].from; + if( strlen( name ) > strlen( from ) ) + { + output_filename = resize_buffer( output_filename, strlen( name ) + + strlen( known_extensions[0].to ) + 1 ); + strcpy( output_filename, name ); + strcpy( output_filename + strlen( name ) - strlen( from ), + known_extensions[i].to ); + return; + } + } + output_filename = resize_buffer( output_filename, strlen( name ) + 4 + 1 ); + strcpy( output_filename, name ); + strcat( output_filename, ".out" ); + if( verbosity >= 0 ) + fprintf( stderr, "%s: Can't guess original name for `%s' -- using `%s'.\n", + program_name, name, output_filename ); + } + + +static bool open_outstream( const bool force ) + { + int flags = O_CREAT | O_WRONLY | o_binary; + if( force ) flags |= O_TRUNC; else flags |= O_EXCL; + + outfd = open( output_filename, flags, outfd_mode ); + if( outfd < 0 && verbosity >= 0 ) + { + if( errno == EEXIST ) + fprintf( stderr, "%s: Output file %s already exists, skipping.\n", + program_name, output_filename ); + else + fprintf( stderr, "%s: Can't create output file `%s': %s.\n", + program_name, output_filename, strerror( errno ) ); + } + return ( outfd >= 0 ); + } + + +void cleanup_and_fail( const int retval ) + { + if( delete_output_on_interrupt ) + { + delete_output_on_interrupt = false; + if( verbosity >= 0 ) + fprintf( stderr, "%s: Deleting output file `%s', if it exists.\n", + program_name, output_filename ); + if( outfd >= 0 ) { close( outfd ); outfd = -1; } + if( remove( output_filename ) != 0 ) + show_error( "WARNING: deletion of output file (apparently) failed.", 0, false ); + } + exit( retval ); + } + + + /* Set permissions, owner and times. */ +static void close_and_set_permissions( const struct stat * const in_statsp ) + { + bool error = false; + if( in_statsp ) + { + if( fchmod( outfd, in_statsp->st_mode ) != 0 || + ( fchown( outfd, in_statsp->st_uid, in_statsp->st_gid ) != 0 && + errno != EPERM ) ) error = true; + /* fchown will in many cases return with EPERM, which can be safely ignored. */ + } + if( close( outfd ) == 0 ) outfd = -1; + else cleanup_and_fail( 1 ); + delete_output_on_interrupt = false; + if( !in_statsp ) return; + if( !error ) + { + struct utimbuf t; + t.actime = in_statsp->st_atime; + t.modtime = in_statsp->st_mtime; + if( utime( output_filename, &t ) != 0 ) error = true; + } + if( error ) + { + show_error( "Can't change output file attributes.", 0, false ); + cleanup_and_fail( 1 ); + } + } + + +static int decompress( const int infd, struct Pretty_print * const pp, + const bool testing ) + { + long long partial_file_pos = 0; + struct Range_decoder rdec; + int retval = 0, i, result; + bool first_member; + Rd_init( &rdec, infd ); + + for( first_member = true; ; first_member = false, Pp_reset( pp ) ) + { + File_header header; + struct LZ_decoder decoder; + Rd_reset_member_position( &rdec ); + for( i = 0; i < Fh_size; ++i ) + header[i] = Rd_get_byte( &rdec ); + if( Rd_finished( &rdec ) ) /* End Of File */ + { + if( first_member ) + { Pp_show_msg( pp, "Error reading member header" ); retval = 1; } + break; + } + if( !Fh_verify_magic( header ) ) + { + if( !first_member ) break; /* trailing garbage */ + Pp_show_msg( pp, "Bad magic number (file not in lzip format)" ); + retval = 2; break; + } + if( !Fh_verify_version( header ) ) + { + if( verbosity >= 0 ) + { Pp_show_msg( pp, 0 ); + fprintf( stderr, "Version %d member format not supported.\n", + Fh_version( header ) ); } + retval = 2; break; + } + if( Fh_get_dictionary_size( header ) < min_dictionary_size || + Fh_get_dictionary_size( header ) > max_dictionary_size ) + { Pp_show_msg( pp, "Invalid dictionary size in member header" ); + retval = 2; break; } + + if( verbosity >= 1 ) + { + Pp_show_msg( pp, 0 ); + if( verbosity >= 2 ) + fprintf( stderr, "version %d, dictionary size %7sB. ", + Fh_version( header ), + format_num( Fh_get_dictionary_size( header ) ) ); + } + LZd_init( &decoder, header, &rdec, outfd ); + + result = LZd_decode_member( &decoder, pp ); + partial_file_pos += Rd_member_position( &rdec ); + LZd_free( &decoder ); + if( result != 0 ) + { + if( verbosity >= 0 && result <= 2 ) + { + Pp_show_msg( pp, 0 ); + if( result == 2 ) + fprintf( stderr, "File ends unexpectedly at pos %lld\n", + partial_file_pos ); + else + fprintf( stderr, "Decoder error at pos %lld\n", partial_file_pos ); + } + retval = 2; break; + } + if( verbosity >= 1 ) + { if( testing ) fprintf( stderr, "ok\n" ); + else fprintf( stderr, "done\n" ); } + } + Rd_free( &rdec ); + return retval; + } + + +void signal_handler( int sig ) + { + sig = 0; /* keep compiler happy */ + show_error( "Control-C or similar caught, quitting.", 0, false ); + cleanup_and_fail( 1 ); + } + + +static void set_signals() + { + signal( SIGHUP, signal_handler ); + signal( SIGINT, signal_handler ); + signal( SIGTERM, signal_handler ); + } + + +void Pp_init( struct Pretty_print * const pp, const char * const filenames[], + const int num_filenames, const int v ) + { + unsigned int stdin_name_len; + int i; + pp->name_ = 0; + pp->stdin_name = "(stdin)"; + pp->longest_name = 0; + pp->verbosity = v; + pp->first_post = false; + stdin_name_len = strlen( pp->stdin_name ); + + for( i = 0; i < num_filenames; ++i ) + { + const char * const s = filenames[i]; + const int len = ( !strcmp( s, "-" ) ? stdin_name_len : strlen( s ) ); + if( len > pp->longest_name ) pp->longest_name = len; + } + if( pp->longest_name == 0 ) pp->longest_name = stdin_name_len; + } + + +void Pp_show_msg( struct Pretty_print * const pp, const char * const msg ) + { + if( verbosity >= 0 ) + { + if( pp->first_post ) + { + int i, len; + pp->first_post = false; + fprintf( stderr, " %s: ", pp->name_ ); + len = pp->longest_name - strlen( pp->name_ ); + for( i = 0; i < len; ++i ) fprintf( stderr, " " ); + if( !msg ) fflush( stderr ); + } + if( msg ) fprintf( stderr, "%s.\n", msg ); + } + } + + +void show_error( const char * const msg, const int errcode, const bool help ) + { + if( verbosity >= 0 ) + { + if( msg && msg[0] ) + { + fprintf( stderr, "%s: %s", program_name, msg ); + if( errcode > 0 ) fprintf( stderr, ": %s", strerror( errcode ) ); + fprintf( stderr, "\n" ); + } + if( help && invocation_name && invocation_name[0] ) + fprintf( stderr, "Try `%s --help' for more information.\n", + invocation_name ); + } + } + + +void internal_error( const char * const msg ) + { + if( verbosity >= 0 ) + fprintf( stderr, "%s: internal error: %s.\n", program_name, msg ); + 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, uint8_t * const buf, const int size ) + { + int rest = size; + while( true ) + { + int n; + errno = 0; + if( rest <= 0 ) break; + 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 uint8_t * const buf, const int size ) + { + int rest = size; + while( true ) + { + int n; + errno = 0; + if( rest <= 0 ) break; + 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 * const argv[] ) + { + const char * input_filename = ""; + const char * default_output_filename = ""; + const char ** filenames = 0; + int num_filenames = 0; + int infd = -1; + int argind = 0; + int retval = 0; + int i; + bool filenames_given = false; + bool force = false; + bool keep_input_files = false; + bool testing = false; + bool to_stdout = false; + struct Pretty_print pp; + + const struct ap_Option options[] = + { + { 'c', "stdout", ap_no }, + { 'd', "decompress", ap_no }, + { 'f', "force", ap_no }, + { 'h', "help", ap_no }, + { 'k', "keep", ap_no }, + { 'o', "output", ap_yes }, + { 'q', "quiet", ap_no }, + { 't', "test", ap_no }, + { 'v', "verbose", ap_no }, + { 'V', "version", ap_no }, + { 0 , 0, ap_no } }; + + struct Arg_parser parser; + + invocation_name = argv[0]; + CRC32_init(); + if( !ap_init( &parser, argc, argv, options, 0 ) ) + { show_error( "Memory exhausted.", 0, false ); return 1; } + if( ap_error( &parser ) ) /* bad option */ + { show_error( ap_error( &parser ), 0, true ); return 1; } + + for( ; argind < ap_arguments( &parser ); ++argind ) + { + const int code = ap_code( &parser, argind ); + const char * const arg = ap_argument( &parser, argind ); + if( !code ) break; /* no more options */ + switch( code ) + { + case 'c': to_stdout = true; break; + case 'd': testing = false; break; + case 'f': force = true; break; + case 'h': show_help(); return 0; + case 'k': keep_input_files = true; break; + case 'o': default_output_filename = arg; break; + case 'q': verbosity = -1; break; + case 't': testing = true; break; + case 'v': if( verbosity < 4 ) ++verbosity; break; + case 'V': show_version(); return 0; + default : internal_error( "uncaught option" ); + } + } /* end process options */ + +#if defined(__MSVCRT__) || defined(__OS2__) + _fsetmode( stdin, "b" ); + _fsetmode( stdout, "b" ); +#endif + + for( ; argind < ap_arguments( &parser ); ++argind ) + { + if( strcmp( ap_argument( &parser, argind ), "-" ) ) + filenames_given = true; + ++num_filenames; + filenames = resize_buffer( filenames, num_filenames * sizeof (char *) ); + filenames[num_filenames-1] = ap_argument( &parser, argind ); + } + + if( num_filenames == 0 ) + { + ++num_filenames; + filenames = resize_buffer( filenames, sizeof (char *) ); + filenames[num_filenames-1] = "-"; + } + if( !to_stdout && !testing && + ( filenames_given || default_output_filename[0] ) ) + set_signals(); + + Pp_init( &pp, filenames, num_filenames, verbosity ); + if( testing ) + outfd = -1; + + output_filename = resize_buffer( output_filename, 1 ); + for( i = 0; i < num_filenames; ++i ) + { + int tmp; + struct stat in_stats; + const struct stat * in_statsp; + output_filename[0] = 0; + + if( !filenames[i][0] || !strcmp( filenames[i], "-" ) ) + { + input_filename = ""; + infd = STDIN_FILENO; + if( !testing ) + { + if( to_stdout || !default_output_filename[0] ) + outfd = STDOUT_FILENO; + else + { + output_filename = resize_buffer( output_filename, + strlen( default_output_filename ) + 1 ); + strcpy( output_filename, default_output_filename ); + outfd_mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH; + if( !open_outstream( force ) ) + { + if( outfd == -1 && retval < 1 ) retval = 1; + close( infd ); infd = -1; + continue; + } + } + } + } + else + { + input_filename = filenames[i]; + infd = open_instream( input_filename, &in_stats, to_stdout ); + if( infd < 0 ) { if( retval < 1 ) retval = 1; continue; } + if( !testing ) + { + if( to_stdout ) outfd = STDOUT_FILENO; + else + { + set_d_outname( input_filename ); + outfd_mode = S_IRUSR | S_IWUSR; + if( !open_outstream( force ) ) + { + if( outfd == -1 && retval < 1 ) retval = 1; + close( infd ); infd = -1; + continue; + } + } + } + } + + if( isatty( infd ) ) + { + show_error( "I won't read compressed data from a terminal.", 0, true ); + return 1; + } + + if( output_filename[0] && !to_stdout && !testing ) + delete_output_on_interrupt = true; + in_statsp = input_filename[0] ? &in_stats : 0; + Pp_set_name( &pp, input_filename ); + tmp = decompress( infd, &pp, testing ); + if( tmp > retval ) retval = tmp; + if( tmp && !testing ) cleanup_and_fail( retval ); + + if( delete_output_on_interrupt ) + close_and_set_permissions( in_statsp ); + if( input_filename[0] ) + { + close( infd ); infd = -1; + if( !keep_input_files && !to_stdout && !testing ) + remove( input_filename ); + } + } + if( outfd >= 0 && close( outfd ) != 0 ) + { + show_error( "Can't close stdout", errno, false ); + if( retval < 1 ) retval = 1; + } + free( output_filename ); + free( filenames ); + ap_free( &parser ); + return retval; + } diff --git a/testsuite/check.sh b/testsuite/check.sh new file mode 100755 index 0000000..5743d4a --- /dev/null +++ b/testsuite/check.sh @@ -0,0 +1,76 @@ +#! /bin/sh +# check script for Lunzip - Decompressor for lzip files +# Copyright (C) 2010 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}"/lunzip +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 +printf "testing lunzip-%s..." "$2" +cd "${objdir}"/tmp + +cat "${testdir}"/test.txt > in || framework_failure +cat in in > in2 || framework_failure +cat "${testdir}"/test_v1.lz > in.lz || framework_failure +cat in.lz in.lz > in2.lz || framework_failure +fail=0 + +"${LZIP}" -t "${testdir}"/test_v0.lz || fail=1 +printf . +"${LZIP}" -cd "${testdir}"/test_v0.lz > copy || fail=1 +cmp in copy || fail=1 +printf . + +"${LZIP}" -t "${testdir}"/test_v1.lz || fail=1 +printf . +"${LZIP}" -cd "${testdir}"/test_v1.lz > copy || fail=1 +cmp in copy || fail=1 +printf . + +"${LZIP}" -t in2.lz || fail=1 +printf . +"${LZIP}" -cd in2.lz > copy2 || fail=1 +cmp in2 copy2 || fail=1 +printf . + +cat in2.lz > copy2.lz || framework_failure +printf "garbage" >> copy2.lz || framework_failure +printf "to be overwritten" > copy2 || framework_failure +"${LZIP}" -t copy2.lz || fail=1 +printf . +"${LZIP}" -dfk copy2.lz || fail=1 +cmp in2 copy2 || fail=1 +printf . + +cat in.lz > out.lz || framework_failure +printf "to be overwritten" > copy || framework_failure +"${LZIP}" -df -o copy < out.lz || fail=1 +cmp in copy || fail=1 +printf . + +cat in.lz > anyothername || framework_failure +"${LZIP}" -q anyothername || fail=1 +cmp in anyothername.out || fail=1 +printf . + +echo +if [ ${fail} = 0 ] ; then + echo "tests completed successfully." + cd "${objdir}" && rm -r tmp +else + echo "tests failed." +fi +exit ${fail} diff --git a/testsuite/test.txt b/testsuite/test.txt new file mode 100644 index 0000000..5b244d5 --- /dev/null +++ b/testsuite/test.txt @@ -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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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/testsuite/test_v0.lz b/testsuite/test_v0.lz new file mode 100644 index 0000000..a09b1e8 Binary files /dev/null and b/testsuite/test_v0.lz differ diff --git a/testsuite/test_v1.lz b/testsuite/test_v1.lz new file mode 100644 index 0000000..f1c79eb Binary files /dev/null and b/testsuite/test_v1.lz differ -- cgit v1.2.3