"Fossies" - the Fresh Open Source Software Archive  

Source code changes of the file "zcmp.cc" between
zutils-1.8.tar.lz and zutils-1.9.tar.lz

About: Zutils is a collection of utilities able to deal with any combination of compressed and non-compressed files transparently. The utilities zcat, zcmp, zdiff, zgrep and ztest supports the compressors bzip2, gzip, lzip and xz.

zcmp.cc  (zutils-1.8.tar.lz):zcmp.cc  (zutils-1.9.tar.lz)
/* Zcmp - decompress and compare two files byte by byte /* Zcmp - decompress and compare two files byte by byte
Copyright (C) 2010-2019 Antonio Diaz Diaz. Copyright (C) 2010-2020 Antonio Diaz Diaz.
This program is free software: you can redistribute it and/or modify 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 it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or the Free Software Foundation, either version 2 of the License, or
(at your option) any later version. (at your option) any later version.
This program is distributed in the hope that it will be useful, This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details. GNU General Public License for more details.
You should have received a copy of the GNU General Public License You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. along with this program. If not, see <http://www.gnu.org/licenses/>.
*/ */
#define _FILE_OFFSET_BITS 64 #define _FILE_OFFSET_BITS 64
#include <algorithm> #include <algorithm>
#include <cctype> #include <cctype>
#include <cerrno> #include <cerrno>
#include <climits> #include <climits>
#include <csignal> #include <csignal>
#include <cstdio> #include <cstdio>
skipping to change at line 52 skipping to change at line 52
#ifndef LLONG_MAX #ifndef LLONG_MAX
#define LLONG_MAX 0x7FFFFFFFFFFFFFFFLL #define LLONG_MAX 0x7FFFFFFFFFFFFFFFLL
#endif #endif
namespace { namespace {
#include "zcmpdiff.cc" #include "zcmpdiff.cc"
void show_help() void show_help()
{ {
std::printf( "Zcmp compares two files ('-' means standard input), and if they std::printf( "zcmp compares two files and, if they differ, writes to standard
differ,\n" output the\n"
"tells the first byte and line number where they differ. Bytes an "first byte and line number where they differ. Bytes and lines ar
d lines\n" e numbered\n"
"are numbered starting with 1. If any given file is compressed, i "starting with 1. A hyphen '-' used as a file argument means stan
ts\n" dard input.\n"
"decompressed content is used. Compressed files are decompressed "If any file given is compressed, its decompressed content is use
on the\n" d. Compressed\n"
"fly; no temporary files are created.\n" "files are decompressed on the fly; no temporary files are create
"\nThe formats supported are bzip2, gzip, lzip and xz.\n" d.\n"
"\nThe formats supported are bzip2, gzip, lzip, and xz.\n"
"\nUsage: zcmp [options] file1 [file2]\n" "\nUsage: zcmp [options] file1 [file2]\n"
"\nZcmp compares file1 to file2. If file2 is omitted zcmp tries t "\nzcmp compares file1 to file2. The standard input is used only
he\n" if file1 or\n"
"file2 refers to standard input. If file2 is omitted zcmp tries t
he\n"
"following:\n" "following:\n"
"\n 1. If file1 is compressed, compares its decompressed content s with\n" "\n - If file1 is compressed, compares its decompressed contents with\n"
" the corresponding uncompressed file (the name of file1 with th e\n" " the corresponding uncompressed file (the name of file1 with th e\n"
" extension removed).\n" " extension removed).\n"
"\n 2. If file1 is uncompressed, compares it with the decompress ed\n" "\n - If file1 is uncompressed, compares it with the decompresse d\n"
" contents of file1.[lz|bz2|gz|xz] (the first one that is found) .\n" " contents of file1.[lz|bz2|gz|xz] (the first one that is found) .\n"
"\n 3. If no suitable file is found, compares file1 with data re
ad from\n"
" standard input.\n"
"\nExit status is 0 if inputs are identical, 1 if different, 2 if trouble.\n" "\nExit status is 0 if inputs are identical, 1 if different, 2 if trouble.\n"
"\nOptions:\n" "\nOptions:\n"
" -h, --help display this help and exit\n " " -h, --help display this help and exit\n "
" -V, --version output version information a nd exit\n" " -V, --version output version information a nd exit\n"
" -b, --print-bytes print differing bytes\n" " -b, --print-bytes print differing bytes\n"
" -i, --ignore-initial=<n>[:<n2>] ignore differences in the fi rst <n> bytes\n" " -i, --ignore-initial=<n>[:<n2>] ignore differences in the fi rst <n> bytes\n"
" -l, --list list position, value of all differing bytes\n" " -l, --list list position, value of all differing bytes\n"
" -M, --format=<list> process only the formats in <list>\n" " -M, --format=<list> process only the formats in <list>\n"
" -n, --bytes=<n> compare at most <n> bytes\n" " -n, --bytes=<n> compare at most <n> bytes\n"
" -N, --no-rcfile don't read runtime configura tion file\n" " -N, --no-rcfile don't read runtime configura tion file\n"
" -O, --force-format=[<f1>][,<f2>] force given formats (bz2, gz , lz, xz)\n" " -O, --force-format=[<f1>][,<f2>] force the formats given (bz2 , gz, lz, xz)\n"
" -q, --quiet suppress all messages\n" " -q, --quiet suppress all messages\n"
" -s, --silent (same as --quiet)\n" " -s, --silent (same as --quiet)\n"
" -v, --verbose verbose mode (same as --list )\n" " -v, --verbose verbose mode (same as --list )\n"
" --bz2=<command> set compressor and options f or bzip2 format\n" " --bz2=<command> set compressor and options f or bzip2 format\n"
" --gz=<command> set compressor and options f or gzip format\n" " --gz=<command> set compressor and options f or gzip format\n"
" --lz=<command> set compressor and options f or lzip format\n" " --lz=<command> set compressor and options f or lzip format\n"
" --xz=<command> set compressor and options f or xz format\n" " --xz=<command> set compressor and options f or xz format\n"
"Numbers may be followed by a multiplier: k = kB = 10^3 = 1000,\n " "\nNumbers may be followed by a multiplier: k = kB = 10^3 = 1000, \n"
"Ki = KiB = 2^10 = 1024, M = 10^6, Mi = 2^20, G = 10^9, Gi = 2^30 , etc...\n" ); "Ki = KiB = 2^10 = 1024, M = 10^6, Mi = 2^20, G = 10^9, Gi = 2^30 , etc...\n" );
show_help_addr(); show_help_addr();
} }
long long getnum( const char * const ptr, const char ** const tailp = 0, long long getnum( const char * const ptr, const char ** const tailp = 0,
const long long llimit = 0, const long long llimit = 0,
const long long ulimit = LLONG_MAX ) const long long ulimit = LLONG_MAX )
{ {
char * tail; char * tail;
errno = 0; errno = 0;
skipping to change at line 321 skipping to change at line 320
} // end namespace } // end namespace
int main( const int argc, const char * const argv[] ) int main( const int argc, const char * const argv[] )
{ {
enum { bz2_opt = 256, gz_opt, lz_opt, xz_opt }; enum { bz2_opt = 256, gz_opt, lz_opt, xz_opt };
// number of initial bytes ignored for each file // number of initial bytes ignored for each file
long long ignore_initial[2] = { 0, 0 }; long long ignore_initial[2] = { 0, 0 };
long long max_size = -1; // < 0 means unlimited size long long max_size = -1; // < 0 means unlimited size
int format_types[2] = { -1, -1 }; int format_types[2] = { -1, -1 };
bool print_bytes = false; bool print_bytes = false;
invocation_name = argv[0];
program_name = "zcmp"; program_name = "zcmp";
invocation_name = ( argc > 0 ) ? argv[0] : program_name;
const Arg_parser::Option options[] = const Arg_parser::Option options[] =
{ {
{ 'b', "print-bytes", Arg_parser::no }, { 'b', "print-bytes", Arg_parser::no },
{ 'h', "help", Arg_parser::no }, { 'h', "help", Arg_parser::no },
{ 'i', "ignore-initial", Arg_parser::yes }, { 'i', "ignore-initial", Arg_parser::yes },
{ 'l', "list", Arg_parser::no }, { 'l', "list", Arg_parser::no },
{ 'M', "format", Arg_parser::yes }, { 'M', "format", Arg_parser::yes },
{ 'n', "bytes", Arg_parser::yes }, { 'n', "bytes", Arg_parser::yes },
{ 'N', "no-rcfile", Arg_parser::no }, { 'N', "no-rcfile", Arg_parser::no },
skipping to change at line 398 skipping to change at line 397
const int files = parser.arguments() - argind; const int files = parser.arguments() - argind;
std::string filenames[2]; // file names of the two input files std::string filenames[2]; // file names of the two input files
filenames[0] = parser.argument( argind ); filenames[0] = parser.argument( argind );
if( files == 2 ) filenames[1] = parser.argument( argind + 1 ); if( files == 2 ) filenames[1] = parser.argument( argind + 1 );
int infd[2]; // file descriptors of the two files int infd[2]; // file descriptors of the two files
infd[0] = ( filenames[0] == "-" ) ? infd[0] = ( filenames[0] == "-" ) ?
STDIN_FILENO : open_instream( filenames[0] ); STDIN_FILENO : open_instream( filenames[0] );
if( infd[0] < 0 ) return 2; if( infd[0] < 0 ) return 2;
if( ( files == 1 && filenames[0] == "-" ) ||
( files == 2 && check_identical( filenames[0].c_str(),
filenames[1].c_str() ) ) )
{
if( ignore_initial[0] == ignore_initial[1] ) return 0;
else { show_error( "Can't compare parts of same file." ); return 2; }
}
if( files == 2 ) if( files == 2 )
{ {
if( check_identical( filenames[0].c_str(), filenames[1].c_str() ) )
{
if( ignore_initial[0] == ignore_initial[1] ) return 0;
else { show_error( "Can't compare parts of same file." ); return 2; }
}
infd[1] = ( filenames[1] == "-" ) ? infd[1] = ( filenames[1] == "-" ) ?
STDIN_FILENO : open_instream( filenames[1] ); STDIN_FILENO : open_instream( filenames[1] );
if( infd[1] < 0 ) return 2; if( infd[1] < 0 ) return 2;
} }
else else
{ {
if( filenames[0] == "-" )
{ show_error( "Missing operand after '-'.", 0, true ); return 2; }
if( format_types[0] >= 0 || format_types[1] >= 0 ) if( format_types[0] >= 0 || format_types[1] >= 0 )
{ show_error( "Two files must be given when format is specified.", 0, true ); { show_error( "Two files must be given when format is specified.", 0, true );
return 2; } return 2; }
filenames[1] = filenames[0]; filenames[1] = filenames[0];
infd[1] = open_other_instream( filenames[1] ); infd[1] = open_other_instream( filenames[1] );
if( infd[1] < 0 ) { infd[1] = STDIN_FILENO; filenames[1] = "-"; } if( infd[1] < 0 )
{
if( verbosity >= 0 )
std::fprintf( stderr, "%s: Can't find file to compare with '%s'.\n",
program_name, filenames[0].c_str() );
show_error( 0, 0, true ); return 2;
}
} }
int old_infd[2]; // copy of file descriptors of the two files int old_infd[2]; // copy of file descriptors of the two files
old_infd[0] = infd[0]; old_infd[1] = infd[1]; old_infd[0] = infd[0]; old_infd[1] = infd[1];
Children children[2]; Children children[2];
if( !set_data_feeder( filenames[0], &infd[0], children[0], format_types[0] ) | | if( !set_data_feeder( filenames[0], &infd[0], children[0], format_types[0] ) | |
!set_data_feeder( filenames[1], &infd[1], children[1], format_types[1] ) ) !set_data_feeder( filenames[1], &infd[1], children[1], format_types[1] ) )
return 2; return 2;
for( int i = 0; i < 2; ++i ) for( int i = 0; i < 2; ++i )
 End of changes. 16 change blocks. 
42 lines changed or deleted 47 lines changed or added

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