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-rw-r--r--main.cc996
1 files changed, 306 insertions, 690 deletions
diff --git a/main.cc b/main.cc
index eba364b..bc7c5fb 100644
--- a/main.cc
+++ b/main.cc
@@ -1,5 +1,5 @@
-/* Zutils - A file format detector for compressed files
- Copyright (C) 2009 Antonio Diaz Diaz.
+/* Zutils - Utilities dealing with compressed files
+ Copyright (C) 2009, 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
@@ -14,257 +14,69 @@
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-/*
- Return values: 0 for a normal exit, 1 for environmental problems
- (file not found, invalid flags, I/O errors, etc), 2 to indicate a
- corrupt or invalid input file, 3 for an internal consistency error
- (eg, bug) which caused zutils to panic.
-*/
#define _FILE_OFFSET_BITS 64
-#include <algorithm>
#include <cerrno>
#include <climits>
#include <csignal>
#include <cstdio>
#include <cstdlib>
#include <cstring>
+#include <list>
#include <string>
#include <vector>
+#include <dirent.h>
#include <fcntl.h>
#include <stdint.h>
#include <unistd.h>
-#include <utime.h>
#include <sys/stat.h>
-#include <sys/time.h>
+#if defined(__MSVCRT__) || defined(__OS2__)
+#include <io.h>
+#endif
#include "arg_parser.h"
+#include "zutils.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
+#if CHAR_BIT != 8
+#error "Environments where CHAR_BIT != 8 are not supported."
#endif
namespace {
-const char * invocation_name = 0;
-const char * const Program_name = "Zutils";
-const char * const program_name = "zutils";
-const char * const program_year = "2009";
-
-struct { const char * from; const char * to; } const known_extensions[] = {
- { ".zf", "" },
- { 0, 0 } };
-
-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();
- };
-
+#ifdef O_BINARY
+const int o_binary = O_BINARY;
+#else
+const int o_binary = 0;
+#endif
-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 );
- }
- }
+enum Mode { m_none, m_zcat, m_zgrep, m_ztest };
void show_help() throw()
{
- std::printf( "%s - A file format detector for compressed files.\n", Program_name );
- std::printf( "\nUsage: %s [options] [files]\n", invocation_name );
- std::printf( "\nOptions:\n" );
+ std::printf( "Zutils is a collection of utilities able to deal with any combination of\n" );
+ std::printf( "compressed and non-compressed files transparently. If any given file,\n" );
+ std::printf( "including standard input, is compressed, its uncompressed content is used.\n" );
+ std::printf( "The supported compressors are bzip2, gzip, lzip and xz.\n" );
+ std::printf( "\nUsage: %s <operation> [options] [files]\n", invocation_name );
+ std::printf( "\nTry `%s <operation> --help' for more specific help.\n", invocation_name );
+ std::printf( "\nOperations:\n" );
std::printf( " -h, --help display this help and exit\n" );
std::printf( " -V, --version output version information and exit\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, --magic=<type> output magic bytes for given file type\n" );
-// std::printf( " -o, --output=<file> if reading stdin, place the output into <file>\n" );
- std::printf( " -q, --quiet suppress all messages\n" );
- std::printf( " -t, --test test compressed file type\n" );
- std::printf( " -v, --verbose be verbose (a 2nd -v gives more)\n" );
- std::printf( "\nReport bugs to zutils-bug@nongnu.org\n" );
- std::printf( "Zutils home page: http://www.nongnu.org/zutils/zutils.html\n" );
+ std::printf( " --zcat zcat operation\n" );
+ std::printf( " --zgrep zgrep operation\n" );
+ std::printf( " --ztest ztest operation\n" );
+ show_help_addr();
}
-void show_version() throw()
+int simple_extension_index( const std::string & name ) throw()
{
- std::printf( "%s %s\n", Program_name, PROGVERSION );
- std::printf( "Copyright (C) %s Antonio Diaz Diaz.\n", program_year );
- std::printf( "License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\n" );
- std::printf( "This is free software: you are free to change and redistribute it.\n" );
- std::printf( "There is NO WARRANTY, to the extent permitted by law.\n" );
- }
-
-
-void show_error( const char * msg, const int errcode = 0, const bool help = false ) throw()
- {
- if( verbosity >= 0 )
+ for( int i = 0; simple_extensions[i]; ++i )
{
- 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 );
- }
-
-
-const char * format_num( long long num, long long limit = 9999,
- const int set_prefix = 0 ) throw()
- {
- const char * const si_prefix[8] =
- { "k", "M", "G", "T", "P", "E", "Z", "Y" };
- const char * const binary_prefix[8] =
- { "Ki", "Mi", "Gi", "Ti", "Pi", "Ei", "Zi", "Yi" };
- static bool si = false;
- static char buf[16];
-
- if( set_prefix ) si = ( set_prefix > 0 );
- const int factor = ( si ) ? 1000 : 1024;
- const char * const *prefix = ( si ) ? si_prefix : binary_prefix;
- const char *p = "";
- limit = std::max( 999LL, std::min( 999999LL, limit ) );
-
- for( int i = 0; i < 8 && ( llabs( num ) > limit ||
- ( llabs( num ) >= factor && num % factor == 0 ) ); ++i )
- { num /= factor; p = prefix[i]; }
- snprintf( buf, sizeof buf, "%lld %s", num, p );
- return buf;
- }
-
-
-long long getnum( const char * ptr, const int bs,
- 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 extension_index( const std::string & name ) throw()
- {
- for( int i = 0; known_extensions[i].from; ++i )
- {
- const std::string ext( known_extensions[i].from );
+ const std::string ext( simple_extensions[i] );
if( name.size() > ext.size() &&
name.compare( name.size() - ext.size(), ext.size(), ext ) == 0 )
return i;
@@ -273,449 +85,262 @@ int extension_index( const std::string & name ) throw()
}
-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 open_instream( std::string & input_filename, const Mode program_mode ) 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
+ int infd = open( input_filename.c_str(), O_RDONLY | o_binary );
+ if( infd < 0 )
{
- inhandle = open( name.c_str(), O_RDONLY );
- if( inhandle < 0 )
+ if( ( program_mode == m_zcat || program_mode == m_zgrep )
+ && simple_extension_index( input_filename ) < 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 ) ) ) ) )
+ for( int i = 0; simple_extensions[i]; ++i )
{
- 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;
+ const std::string name( input_filename + simple_extensions[i] );
+ infd = open( name.c_str(), O_RDONLY | o_binary );
+ if( infd >= 0 ) { input_filename = name; break; }
}
}
+ if( infd < 0 && verbosity >= 0 )
+ std::fprintf( stderr, "%s: Can't open input file `%s': %s.\n",
+ util_name, input_filename.c_str(), std::strerror( errno ) );
}
- 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;
+ return infd;
}
+#include "zcat.cc"
+#include "zgrep.cc"
+#include "ztest.cc"
-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;
- tmp = utime( output_filename.c_str(), &t );
- }
- if( tmp )
- {
- if( tmp > *retvalp ) *retvalp = tmp;
- show_error( "I can't change output file attributes." );
- cleanup_and_fail( *retvalp );
- }
- }
+} // end namespace
-// 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 main( const int argc, const char * const argv[] )
{
- 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;
- }
-
+ enum { help_opt = 256, verbose_opt, zcat_opt, zgrep_opt, ztest_opt };
+ const Arg_parser::Option * options = 0;
+ int infd = -1;
+ Mode program_mode = m_none;
+ bool recursive = false;
+ std::string input_filename;
+ std::list< std::string > filenames;
+ Cat_options cat_options;
+ std::vector< const char * > grep_args; // args to grep, maybe empty
+ std::vector< const char * > ztest_args; // args to ztest, maybe empty
+ invocation_name = argv[0];
-// 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 )
+ const Arg_parser::Option m_zcat_options[] =
{
- 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 compress( const int inhandle, const Pretty_print & pp,
- const struct stat * in_statsp, int * retvalp )
- {
- long long in_size = 0, out_size = 0;
- if( verbosity >= 1 )
+ { 'A', "show-all", Arg_parser::no }, // cat
+ { 'b', "number-nonblank", Arg_parser::no }, // cat
+ { 'c', "stdout", Arg_parser::no }, // gzip
+ { 'd', "decompress", Arg_parser::no }, // gzip
+ { 'e', 0, Arg_parser::no }, // cat
+ { 'E', "show-ends", Arg_parser::no }, // cat
+ { 'f', "force", Arg_parser::no }, // gzip
+ { 'h', "help", Arg_parser::no },
+ { 'l', "list", Arg_parser::no }, // gzip
+ { 'L', "license", Arg_parser::no }, // gzip
+ { 'n', "number", Arg_parser::no }, // cat
+ { 'q', "quiet", Arg_parser::no },
+ { 'r', "recursive", Arg_parser::no },
+ { 's', "squeeze-blank", Arg_parser::no }, // cat
+ { 't', 0, Arg_parser::no }, // cat
+ { 'T', "show-tabs", Arg_parser::no }, // cat
+ { 'v', "show-nonprinting", Arg_parser::no }, // cat
+ { 'V', "version", Arg_parser::no },
+ { verbose_opt, "verbose", Arg_parser::no },
+ { zcat_opt, "zcat", Arg_parser::no },
+ { 0 , 0, Arg_parser::no } };
+
+ const Arg_parser::Option m_zgrep_options[] =
{
- pp();
- if( in_size <= 0 || out_size <= 0 )
- std::fprintf( stderr, "no data compressed.\n" );
- else
- std::fprintf( stderr, "%6.3f:1, %6.3f bits/byte, "
- "%5.2f%% saved, %lld in, %lld out.\n",
- (double)in_size / out_size,
- ( 8.0 * out_size ) / in_size,
- 100.0 * ( 1.0 - ( (double)out_size / in_size ) ),
- in_size, out_size );
- }
- return 0;
- }
-
-
-int decompress( const int inhandle, const Pretty_print & pp )
- {
- if( verbosity >= 1 )
- std::fprintf( stderr, "done\n" );
- return 0;
- }
-*/
-
-unsigned char xdigit( const int value ) throw()
- {
- if( value >= 0 && value <= 9 ) return '0' + value;
- if( value >= 10 && value <= 15 ) return 'A' + value - 10;
- return 0;
- }
-
-
-int xtoi( const unsigned char ch ) throw()
- {
- switch( ch )
+ { 'a', "text", Arg_parser::no }, // grep GNU
+ { 'A', "after-context", Arg_parser::yes }, // grep GNU
+ { 'b', "byte-offset", Arg_parser::no }, // grep GNU
+ { 'B', "before-context", Arg_parser::yes }, // grep GNU
+ { 'c', "count", Arg_parser::no }, // grep
+ { 'C', "context", Arg_parser::yes }, // grep GNU
+ { 'e', "regexp", Arg_parser::yes }, // grep
+ { 'E', "extended-regexp", Arg_parser::no }, // grep
+ { 'f', "file ", Arg_parser::yes }, // grep
+ { 'F', "fixed-strings", Arg_parser::no }, // grep
+ { 'h', "no-filename", Arg_parser::no }, // grep GNU
+ { 'H', "with-filename", Arg_parser::no }, // grep GNU
+ { 'i', "ignore-case", Arg_parser::no }, // grep
+ { 'I', 0, Arg_parser::no }, // grep GNU
+ { 'l', "files-with-matches", Arg_parser::no }, // grep
+ { 'L', "files-without-match", Arg_parser::no }, // grep GNU
+ { 'm', "max-count", Arg_parser::yes }, // grep GNU
+ { 'n', "line-number", Arg_parser::no }, // grep
+ { 'o', "only-matching", Arg_parser::no }, // grep
+ { 'q', "quiet", Arg_parser::no },
+ { 'r', "recursive", Arg_parser::no },
+ { 's', "no-messages", Arg_parser::no }, // grep
+ { 'v', "invert-match", Arg_parser::no }, // grep
+ { 'V', "version", Arg_parser::no },
+ { 'w', "word-regexp", Arg_parser::no }, // grep GNU
+ { 'x', "line-regexp", Arg_parser::no }, // grep
+ { help_opt, "help", Arg_parser::no },
+ { verbose_opt, "verbose", Arg_parser::no },
+ { zgrep_opt, "zgrep", Arg_parser::no },
+ { 0 , 0, Arg_parser::no } };
+
+ const Arg_parser::Option m_ztest_options[] =
{
- case '0': return 0;
- case '1': return 1;
- case '2': return 2;
- case '3': return 3;
- case '4': return 4;
- case '5': return 5;
- case '6': return 6;
- case '7': return 7;
- case '8': return 8;
- case '9': return 9;
- case 'a':
- case 'A': return 0x0A;
- case 'b':
- case 'B': return 0x0B;
- case 'c':
- case 'C': return 0x0C;
- case 'd':
- case 'D': return 0x0D;
- case 'e':
- case 'E': return 0x0E;
- case 'f':
- case 'F': return 0x0F;
- default: return -1;
- }
- }
-
-
-bool hex_to_data( const std::string & hex, std::string & data )
- {
- data.clear();
- if( hex.size() == 0 || hex.size() % 2 != 0 ) return false;
- for( unsigned int i = 0; 2 * i + 1 < hex.size(); ++i )
+ { 'h', "help", Arg_parser::no },
+ { 'q', "quiet", Arg_parser::no },
+ { 'r', "recursive", Arg_parser::no },
+ { 'v', "verbose", Arg_parser::no },
+ { 'V', "version", Arg_parser::no },
+ { ztest_opt, "ztest", Arg_parser::no },
+ { 0 , 0, Arg_parser::no } };
+
+ { // parse operation
+ const Arg_parser::Option operations[] =
{
- int uch = xtoi( hex[2*i] );
- int lch = xtoi( hex[2*i+1] );
- if( uch < 0 || lch < 0 ) return false;
- data.push_back( ( uch << 4 ) | lch );
- }
- return true;
- }
-
-
-int print_magic_type( const std::string & magic_type )
- {
- std::string data;
-
- if( magic_type == "bzip2" ) std::printf( "BZh" );
- else if( magic_type == "gzip" ) std::printf( "\x1F\x8B" );
- else if( magic_type == "lzip" ) std::printf( "LZIP" );
- else if( magic_type == "xz" ) std::printf( "%c7zXZ", '\xFD' );
- else if( hex_to_data( magic_type, data ) ) std::printf( data.c_str() );
- else return 1;
- return 0;
- }
-
+ { 'h', "help", Arg_parser::no },
+ { 'V', "version", Arg_parser::no },
+ { zcat_opt, "zcat", Arg_parser::no },
+ { zgrep_opt, "zgrep", Arg_parser::no },
+ { ztest_opt, "ztest", Arg_parser::no },
+ { 0 , 0, Arg_parser::no } };
+
+ const Arg_parser parser( argv[1], ( argc > 2 ) ? argv[2] : 0, operations );
+ if( parser.error().size() ) // bad operation
+ { show_error( parser.error().c_str(), 0, true ); return 1; }
-int test_stdin_type( const int inhandle, const Pretty_print & pp )
- {
- unsigned char buf[5];
- const char * msg = 0;
- int i = 0;
- if( readblock( inhandle, (char *)buf, 1 ) == 1 )
+ if( parser.arguments() > 0 )
{
- if( buf[0] == 0x1F )
+ switch( parser.code( 0 ) )
{
- if( readblock( inhandle, (char *)&buf[++i], 1 ) == 1 && buf[i] == 0x8B )
- msg = "gzip";
- }
- else if( buf[0] == 'B' )
- {
- if( readblock( inhandle, (char *)&buf[++i], 1 ) == 1 && buf[i] == 'Z' &&
- readblock( inhandle, (char *)&buf[++i], 1 ) == 1 && buf[i] == 'h' )
- msg = "bzip2";
- }
- else if( buf[0] == 'L' )
- {
- if( readblock( inhandle, (char *)&buf[++i], 1 ) == 1 && buf[i] == 'Z' &&
- readblock( inhandle, (char *)&buf[++i], 1 ) == 1 && buf[i] == 'I' &&
- readblock( inhandle, (char *)&buf[++i], 1 ) == 1 && buf[i] == 'P' )
- msg = "lzip";
- }
- else if( buf[0] == 0xFD )
- {
- if( readblock( inhandle, (char *)&buf[++i], 1 ) == 1 && buf[i] == '7' &&
- readblock( inhandle, (char *)&buf[++i], 1 ) == 1 && buf[i] == 'z' &&
- readblock( inhandle, (char *)&buf[++i], 1 ) == 1 && buf[i] == 'X' &&
- readblock( inhandle, (char *)&buf[++i], 1 ) == 1 && buf[i] == 'Z' )
- msg = "xz";
- }
- }
- const int retval = ( msg ? 0 : 1 );
- if( verbosity >= 0 )
- {
- if( verbosity >= 1 ) pp();
- if( !msg )
- {
- char hexmsg[(2*sizeof buf)+1];
- for( int j = 0; j <= i; ++j )
- {
- hexmsg[2*j] = xdigit( buf[j] >> 4 );
- hexmsg[2*j+1] = xdigit( buf[j] & 0x0F );
- }
- hexmsg[2*i+2] = 0;
- msg = hexmsg;
+ case 0 : break;
+ case 'h': show_help(); return 0;
+ case 'V': show_version(); return 0;
+ case zcat_opt : program_mode = m_zcat; options = m_zcat_options;
+ util_name = "zcat"; break;
+ case zgrep_opt : program_mode = m_zgrep; options = m_zgrep_options;
+ util_name = "zgrep"; break;
+ case ztest_opt : program_mode = m_ztest; options = m_ztest_options;
+ util_name = "ztest"; break;
+ default : internal_error( "uncaught option" );
}
- std::printf( "%s\n", msg );
}
- return retval;
- }
+#if defined(__MSVCRT__) || defined(__OS2__)
+ _setmode( STDIN_FILENO, O_BINARY );
+ _setmode( STDOUT_FILENO, O_BINARY );
+#endif
-int test_type( const int inhandle, const Pretty_print & pp )
- {
- unsigned char buf[5];
- const char * msg = 0;
- const int size = readblock( inhandle, (char *)buf, sizeof buf );
- if( size == (int)sizeof buf )
- {
- if( buf[0] == 0x1F && buf[1] == 0x8B )
- msg = "gzip";
- else if( buf[0] == 'B' && buf[1] == 'Z' && buf[2] == 'h' )
- msg = "bzip2";
- else if( buf[0] == 'L' && buf[1] == 'Z' && buf[2] == 'I' && buf[3] == 'P' )
- msg = "lzip";
- else if( buf[0] == 0xFD && buf[1] == '7' && buf[2] == 'z' && buf[3] == 'X' && buf[4] == 'Z' )
- msg = "xz";
- }
- const int retval = ( msg ? 0 : 1 );
- if( verbosity >= 0 )
+ if( program_mode == m_none )
{
- if( verbosity >= 1 ) pp();
- if( !msg ) msg = "unknown";
- std::printf( "%s\n", msg );
+ show_error( "You must specify the operation to be performed.", 0, true );
+ return 1;
}
- return retval;
- }
-
-
-extern "C" void signal_handler( int ) throw()
- {
- show_error( "Control-C or similar caught, quitting." );
- cleanup_and_fail( 0 );
- }
-
+ } // end parse operation
-void set_signals() throw()
- {
- signal( SIGHUP, signal_handler );
- signal( SIGINT, signal_handler );
- signal( SIGTERM, signal_handler );
- }
-
-} // end namespace
-
-
-int main( const int argc, const char * argv[] )
- {
- 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;
- std::string magic_type;
- invocation_name = argv[0];
-
- const Arg_parser::Option options[] =
- {
- { 'c', "stdout", Arg_parser::no },
- { 'd', "decompress", Arg_parser::no },
- { 'f', "force", Arg_parser::no },
- { 'h', "help", Arg_parser::no },
- { 'k', "keep", Arg_parser::no },
- { 'm', "magic", Arg_parser::yes },
- { 'o', "output", Arg_parser::yes },
- { 'q', "quiet", Arg_parser::no },
- { '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 );
+ const Arg_parser parser( argc, argv, options );
if( parser.error().size() ) // bad option
- { show_error( parser.error().c_str(), 0, true ); return 1; }
+ { show_error( parser.error().c_str(), 0, true );
+ return ( program_mode == m_zcat ) ? 1 : 2; }
int argind = 0;
+ bool grep_list = false;
+ bool grep_show_name = true;
+ bool grep_pattern_found = false;
for( ; argind < parser.arguments(); ++argind )
{
const int code = parser.code( argind );
- if( !code ) break; // no more options
- const std::string & arg = parser.argument( argind );
- switch( code )
+ const char * arg = parser.argument( argind ).c_str();
+ if( !code )
{
- case 'c': to_stdout = true; break;
- case 'd': program_mode = m_decompress; break;
- case 'f': force = true; break;
- case 'h': show_help(); return 0;
- case 'k': keep_input_files = true; break;
- case 'm': magic_type = arg; break;
- case 'o': default_output_filename = arg; break;
- case 'q': verbosity = -1; 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( program_mode == m_zgrep && !grep_pattern_found )
+ { grep_args.push_back( arg ); grep_pattern_found = true; continue; }
+ else break; // no more options
}
- }
+ switch( program_mode )
+ {
+ case m_none: internal_error( "invalid operation" );
+ case m_zcat:
+ switch( code )
+ {
+ case 'A': cat_options.show_ends = true;
+ cat_options.show_nonprinting = true;
+ cat_options.show_tabs = true; break;
+ case 'b': cat_options.number_lines = 1; break;
+ case 'c': break;
+ case 'd': break;
+ case 'e': cat_options.show_nonprinting = true; // fall through
+ case 'E': cat_options.show_ends = true; break;
+ case 'f': break;
+ case 'h': show_zcat_help(); return 0;
+ case 'l': break;
+ case 'L': break;
+ case 'n': if( cat_options.number_lines == 0 )
+ { cat_options.number_lines = 2; } break;
+ case 'q': verbosity = -1; break;
+ case 'r': recursive = true; break;
+ case 's': cat_options.squeeze_blank = true; break;
+ case 't': cat_options.show_nonprinting = true; // fall through
+ case 'T': cat_options.show_tabs = true; break;
+ case 'v': cat_options.show_nonprinting = true; break;
+ case 'V': show_version( "Zcat" ); return 0;
+ case verbose_opt : if( verbosity < 4 ) ++verbosity; break;
+ case zcat_opt : break;
+ default : internal_error( "uncaught option" );
+ } break;
+ case m_zgrep:
+ switch( code )
+ {
+ case 'a': grep_args.push_back( "-a" ); break;
+ case 'A': grep_args.push_back( "-A" ); grep_args.push_back( arg ); break;
+ case 'b': grep_args.push_back( "-b" ); break;
+ case 'B': grep_args.push_back( "-B" ); grep_args.push_back( arg ); break;
+ case 'c': grep_args.push_back( "-c" ); break;
+ case 'C': grep_args.push_back( "-C" ); grep_args.push_back( arg ); break;
+ case 'e': grep_args.push_back( "-e" ); grep_args.push_back( arg );
+ grep_pattern_found = true; break;
+ case 'E': grep_args.push_back( "-E" ); break;
+ case 'f': grep_args.push_back( "-f" ); grep_args.push_back( arg );
+ grep_pattern_found = true; break;
+ case 'F': grep_args.push_back( "-F" ); break;
+ case 'h': grep_show_name = false; break;
+ case 'H': grep_show_name = true; break;
+ case 'i': grep_args.push_back( "-i" ); break;
+ case 'I': grep_args.push_back( "-I" ); break;
+ case 'l': grep_args.push_back( "-l" ); grep_list = true; break;
+ case 'L': grep_args.push_back( "-L" ); grep_list = true; break;
+ case 'm': grep_args.push_back( "-m" ); grep_args.push_back( arg ); break;
+ case 'n': grep_args.push_back( "-n" ); break;
+ case 'o': grep_args.push_back( "-o" ); break;
+ case 'q': grep_args.push_back( "-q" ); verbosity = -1; break;
+ case 'r': recursive = true; break;
+ case 's': grep_args.push_back( "-s" ); verbosity = -1; break;
+ case 'v': grep_args.push_back( "-v" ); break;
+ case 'V': show_version( "Zgrep" ); return 0;
+ case 'w': grep_args.push_back( "-w" ); break;
+ case 'x': grep_args.push_back( "-x" ); break;
+ case help_opt : show_zgrep_help(); return 0;
+ case verbose_opt : if( verbosity < 4 ) ++verbosity; break;
+ case zgrep_opt : break;
+ default : internal_error( "uncaught option" );
+ } break;
+ case m_ztest:
+ switch( code )
+ {
+ case 'h': show_ztest_help(); return 0;
+ case 'q': verbosity = -1; ztest_args.push_back( "-q" ); break;
+ case 'r': recursive = true; break;
+ case 'v': if( verbosity < 4 ) ++verbosity;
+ ztest_args.push_back( "-v" ); break;
+ case 'V': show_version( "Ztest" ); return 0;
+ case ztest_opt : break;
+ default : internal_error( "uncaught option" );
+ } break;
+ }
+ } // end process options
- if( magic_type.size() ) return print_magic_type( magic_type );
+ if( program_mode == m_zgrep && !grep_pattern_found )
+ { show_error( "Pattern not found.", 0, true ); return 2; }
bool filenames_given = false;
for( ; argind < parser.arguments(); ++argind )
@@ -725,96 +350,87 @@ int main( const int argc, const char * argv[] )
}
if( filenames.empty() ) filenames.push_back("-");
- if( filenames_given ) 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 )
+ int retval = ( ( program_mode == m_zgrep ) ? 1 : 0 );
+ while( !filenames.empty() )
{
- struct stat in_stats;
- output_filename.clear();
-
- if( !filenames[i].size() || filenames[i] == "-" )
+ input_filename = filenames.front();
+ filenames.pop_front();
+ if( !input_filename.size() || input_filename == "-" )
{
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;
- }
- }
- }
+ infd = STDIN_FILENO;
}
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( recursive )
{
- if( to_stdout ) outhandle = STDOUT_FILENO;
- else
+ struct stat st;
+ if( !stat( input_filename.c_str(), &st ) && S_ISDIR( st.st_mode ) )
{
- if( program_mode == m_compress )
- set_c_outname( input_filename );
- else set_d_outname( input_filename, eindex );
- if( !open_outstream( force ) )
+ DIR * const dirp = opendir( input_filename.c_str() );
+ if( !dirp )
{
- if( outhandle == -1 && retval < 1 ) retval = 1;
- close( inhandle ); inhandle = -1;
- continue;
+ if( verbosity >= 0 )
+ std::fprintf( stderr, "%s: Can't open directory `%s': %s.\n",
+ util_name, input_filename.c_str(), std::strerror( errno ) );
+ if( retval < 1 ) retval = 1; continue;
}
+ std::list< std::string > tmp_list;
+ while( true )
+ {
+ const struct dirent * const entryp = readdir( dirp );
+ if( !entryp ) { closedir( dirp ); break; }
+ std::string tmp_name( entryp->d_name );
+ if( tmp_name != "." && tmp_name != ".." )
+ tmp_list.push_back( input_filename + "/" + tmp_name );
+ }
+ filenames.splice( filenames.begin(), tmp_list );
+ continue;
}
}
+ infd = open_instream( input_filename, program_mode );
+ if( infd < 0 ) { if( retval < 1 ) retval = 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;
switch( program_mode )
{
- case m_compress:
- /*tmp = compress( inhandle, pp, in_statsp, &retval );*/ break;
- case m_decompress:
- /*tmp = decompress( inhandle, pp );*/ break;
- case m_test:
- if( inhandle == STDIN_FILENO )
- tmp = test_stdin_type( inhandle, pp );
- else tmp = test_type( inhandle, pp );
+ case m_none:
+ break;
+ case m_zcat:
+ tmp = cat( infd, input_filename, cat_options );
+ break;
+ case m_zgrep:
+ if( infd == STDIN_FILENO )
+ tmp = zgrep_stdin( infd, grep_args );
+ else tmp = zgrep_file( infd, input_filename, grep_args,
+ grep_list, grep_show_name );
+ break;
+ case m_ztest:
+ if( infd == STDIN_FILENO )
+ tmp = ztest_stdin( infd, ztest_args );
+ else tmp = ztest_file( infd, input_filename, ztest_args );
break;
}
- if( tmp > retval ) retval = tmp;
- if( tmp && program_mode != m_test ) cleanup_and_fail( retval );
+ if( program_mode == m_zgrep )
+ { if( tmp == 0 || ( tmp == 2 && retval == 1 ) ) retval = tmp; }
+ else if( tmp > retval ) retval = tmp;
-// if( delete_output_on_interrupt )
-// close_and_set_permissions( in_statsp, &retval );
if( input_filename.size() )
+ { close( infd ); infd = -1; }
+ }
+
+ if( std::fclose( stdout ) != 0 )
+ {
+ show_error( "Can't close stdout", errno );
+ switch( program_mode )
{
- close( inhandle ); inhandle = -1;
- if( !keep_input_files && !to_stdout && program_mode != m_test )
- std::remove( input_filename.c_str() );
+ case m_none: break;
+ case m_zcat: retval = 1; break;
+ case m_zgrep: if( retval != 0 || verbosity >= 0 ) retval = 2; break;
+ case m_ztest: if( retval == 0 ) retval = 1; break;
}
}
- if( outhandle >= 0 ) close( outhandle );
return retval;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-20 11:17:05 +0000