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-rw-r--r--main.cc106
1 files changed, 55 insertions, 51 deletions
diff --git a/main.cc b/main.cc
index db70e00..dc21a9a 100644
--- a/main.cc
+++ b/main.cc
@@ -86,7 +86,7 @@ struct lzma_options
enum Mode { m_compress = 0, m_decompress, m_test };
std::string output_filename;
-int outhandle = -1;
+int outfd = -1;
bool delete_output_on_interrupt = false;
pthread_t main_thread;
pid_t main_thread_pid;
@@ -227,7 +227,7 @@ int open_instream( const std::string & name, struct stat * in_statsp,
const Mode program_mode, const int eindex,
const bool force, const bool to_stdout ) throw()
{
- int inhandle = -1;
+ int infd = -1;
if( program_mode == m_compress && !force && eindex >= 0 )
{
if( verbosity >= 0 )
@@ -237,8 +237,8 @@ int open_instream( const std::string & name, struct stat * in_statsp,
}
else
{
- inhandle = open( name.c_str(), O_RDONLY | o_binary );
- if( inhandle < 0 )
+ infd = open( name.c_str(), O_RDONLY | o_binary );
+ if( infd < 0 )
{
if( verbosity >= 0 )
std::fprintf( stderr, "%s: Can't open input file `%s': %s.\n",
@@ -246,7 +246,7 @@ int open_instream( const std::string & name, struct stat * in_statsp,
}
else
{
- const int i = fstat( inhandle, in_statsp );
+ const int i = fstat( infd, in_statsp );
const mode_t & mode = in_statsp->st_mode;
if( i < 0 || !( S_ISREG( mode ) || ( to_stdout &&
( S_ISFIFO( mode ) || S_ISSOCK( mode ) ||
@@ -256,12 +256,12 @@ int open_instream( const std::string & name, struct stat * in_statsp,
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;
+ close( infd );
+ infd = -1;
}
}
}
- return inhandle;
+ return infd;
}
@@ -294,18 +294,18 @@ void set_d_outname( const std::string & name, const int i ) throw()
bool open_outstream( const bool force ) throw()
{
if( force )
- outhandle = open( output_filename.c_str(),
- O_CREAT | O_TRUNC | O_WRONLY | o_binary,
- S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH );
- else outhandle = open( output_filename.c_str(),
- O_CREAT | O_EXCL | O_WRONLY | o_binary,
- S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH );
- if( outhandle < 0 )
+ outfd = open( output_filename.c_str(),
+ O_CREAT | O_TRUNC | O_WRONLY | o_binary,
+ S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH );
+ else outfd = open( output_filename.c_str(),
+ O_CREAT | O_EXCL | O_WRONLY | o_binary,
+ S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH );
+ if( outfd < 0 )
{
- if( errno == EEXIST ) outhandle = -2; else outhandle = -1;
+ if( errno == EEXIST ) outfd = -2; else outfd = -1;
if( verbosity >= 0 )
{
- if( outhandle == -2 )
+ if( outfd == -2 )
std::fprintf( stderr, "%s: Output file %s already exists, skipping.\n",
program_name, output_filename.c_str() );
else
@@ -313,19 +313,19 @@ bool open_outstream( const bool force ) throw()
program_name, output_filename.c_str(), std::strerror( errno ) );
}
}
- return ( outhandle >= 0 );
+ return ( outfd >= 0 );
}
-bool check_tty( const int inhandle, const Mode program_mode ) throw()
+bool check_tty( const int infd, const Mode program_mode ) throw()
{
- if( program_mode == m_compress && isatty( outhandle ) )
+ if( program_mode == m_compress && isatty( outfd ) )
{
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 ) )
+ isatty( infd ) )
{
show_error( "I won't read compressed data from a terminal.", 0, true );
return false;
@@ -338,10 +338,11 @@ void cleanup_and_fail( const int retval ) throw()
{
if( delete_output_on_interrupt )
{
+ delete_output_on_interrupt = false;
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( outfd >= 0 ) { close( outfd ); outfd = -1; }
if( std::remove( output_filename.c_str() ) != 0 )
show_error( "WARNING: deletion of output file (apparently) failed." );
}
@@ -355,11 +356,11 @@ void close_and_set_permissions( const struct stat * const in_statsp )
bool error = false;
if( in_statsp )
{
- if( fchmod( outhandle, in_statsp->st_mode ) != 0 ) error = true;
- else (void)fchown( outhandle, in_statsp->st_uid, in_statsp->st_gid );
+ if( fchmod( outfd, in_statsp->st_mode ) != 0 ) error = true;
+ else (void)fchown( outfd, 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;
+ if( close( outfd ) == 0 ) outfd = -1;
else cleanup_and_fail( 1 );
delete_output_on_interrupt = false;
if( !in_statsp ) return;
@@ -388,11 +389,14 @@ extern "C" void signal_handler( int sig ) throw()
}
-void set_signals() throw()
+void set_signals( const bool to_file ) throw()
{
- signal( SIGHUP, signal_handler );
- signal( SIGINT, signal_handler );
- signal( SIGTERM, signal_handler );
+ if( to_file )
+ {
+ signal( SIGHUP, signal_handler );
+ signal( SIGINT, signal_handler );
+ signal( SIGTERM, signal_handler );
+ }
signal( SIGUSR1, signal_handler );
}
@@ -504,7 +508,7 @@ int main( const int argc, const char * argv[] )
lzma_options encoder_options = option_mapping[5]; // default = "-6"
int data_size = 0;
int debug_level = 0;
- int inhandle = -1;
+ int infd = -1;
int num_workers = 0; // Start this many worker threads
Mode program_mode = m_compress;
bool force = false;
@@ -574,7 +578,7 @@ int main( const int argc, const char * argv[] )
case '7': case '8': case '9':
encoder_options = option_mapping[code-'1']; break;
case 'b': break;
- case 'B': data_size = getnum( arg, 0, 100000,
+ case 'B': data_size = getnum( arg, 0, 2 * LZ_min_dictionary_size(),
2 * LZ_max_dictionary_size() ); break;
case 'c': to_stdout = true; break;
case 'd': program_mode = m_decompress; break;
@@ -608,7 +612,7 @@ int main( const int argc, const char * argv[] )
if( num_online <= 0 ) num_online = 1;
num_workers = std::min( num_online, max_workers );
}
- const int num_slots = std::max( 1, ( num_workers * slots_per_worker ) - 1 );
+ const int num_slots = num_workers * slots_per_worker;
bool filenames_given = false;
for( ; argind < parser.arguments(); ++argind )
@@ -618,13 +622,12 @@ int main( const int argc, const char * argv[] )
}
if( filenames.empty() ) filenames.push_back("-");
- if( !to_stdout && program_mode != m_test &&
- ( filenames_given || default_output_filename.size() ) )
- set_signals();
+ set_signals( !to_stdout && program_mode != m_test &&
+ ( filenames_given || default_output_filename.size() ) );
Pretty_print pp( filenames );
if( program_mode == m_test )
- outhandle = -1;
+ outfd = -1;
int retval = 0;
for( unsigned int i = 0; i < filenames.size(); ++i )
@@ -635,11 +638,11 @@ int main( const int argc, const char * argv[] )
if( !filenames[i].size() || filenames[i] == "-" )
{
input_filename.clear();
- inhandle = STDIN_FILENO;
+ infd = STDIN_FILENO;
if( program_mode != m_test )
{
if( to_stdout || !default_output_filename.size() )
- outhandle = STDOUT_FILENO;
+ outfd = STDOUT_FILENO;
else
{
if( program_mode == m_compress )
@@ -647,8 +650,8 @@ int main( const int argc, const char * argv[] )
else output_filename = default_output_filename;
if( !open_outstream( force ) )
{
- if( outhandle == -1 && retval < 1 ) retval = 1;
- close( inhandle ); inhandle = -1;
+ if( outfd == -1 && retval < 1 ) retval = 1;
+ close( infd ); infd = -1;
continue;
}
}
@@ -658,12 +661,12 @@ int main( const int argc, const char * argv[] )
{
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; }
+ infd = open_instream( input_filename, &in_stats, program_mode,
+ eindex, force, to_stdout );
+ if( infd < 0 ) { if( retval < 1 ) retval = 1; continue; }
if( program_mode != m_test )
{
- if( to_stdout ) outhandle = STDOUT_FILENO;
+ if( to_stdout ) outfd = STDOUT_FILENO;
else
{
if( program_mode == m_compress )
@@ -671,15 +674,15 @@ int main( const int argc, const char * argv[] )
else set_d_outname( input_filename, eindex );
if( !open_outstream( force ) )
{
- if( outhandle == -1 && retval < 1 ) retval = 1;
- close( inhandle ); inhandle = -1;
+ if( outfd == -1 && retval < 1 ) retval = 1;
+ close( infd ); infd = -1;
continue;
}
}
}
}
- if( !check_tty( inhandle, program_mode ) ) return 1;
+ if( !check_tty( infd, program_mode ) ) return 1;
if( output_filename.size() && !to_stdout && program_mode != m_test )
delete_output_on_interrupt = true;
@@ -690,9 +693,10 @@ int main( const int argc, const char * argv[] )
if( program_mode == m_compress )
tmp = compress( data_size, encoder_options.dictionary_size,
encoder_options.match_len_limit, num_workers,
- num_slots, inhandle, outhandle, debug_level );
+ num_slots, infd, outfd, pp, debug_level );
else
- tmp = decompress( inhandle, outhandle, pp, program_mode == m_test );
+ tmp = decompress( num_workers, num_slots, infd, outfd, pp,
+ debug_level, program_mode == m_test );
if( tmp > retval ) retval = tmp;
if( tmp && program_mode != m_test ) cleanup_and_fail( retval );
@@ -700,12 +704,12 @@ int main( const int argc, const char * argv[] )
close_and_set_permissions( in_statsp );
if( input_filename.size() )
{
- close( inhandle ); inhandle = -1;
+ close( infd ); infd = -1;
if( !keep_input_files && !to_stdout && program_mode != m_test )
std::remove( input_filename.c_str() );
}
}
- if( outhandle >= 0 && close( outhandle ) != 0 )
+ if( outfd >= 0 && close( outfd ) != 0 )
{
if( verbosity >= 0 )
std::fprintf( stderr, "%s: Can't close stdout: %s.\n",
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-01 05:03:29 +0000