/[fuse-comp]/fuse-comp.pl
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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revision 15 by dpavlin, Mon Jul 9 13:33:13 2007 UTC revision 21 by dpavlin, Mon Jul 9 17:35:26 2007 UTC
# Line 19  my $mount = { Line 19  my $mount = {
19          tmp             => '/dev/shm/comp',          tmp             => '/dev/shm/comp',
20  };  };
21    
22  my $debug = 1;  my $debug = shift @ARGV;
23    
24  my $skip_extensions_regex = qr/\.(?:sw[a-z]|gif|png|jpeg|jpg|avi|rar|zip|bz2|gz|tgz|avi|mpeg|mpg|tmp|temp)$/i;  my $skip_extensions_regex = qr/\.(?:sw[a-z]|gif|png|jpeg|jpg|avi|rar|zip|bz2|gz|tgz|avi|mpeg|mpg|tmp|temp)$/i;
25    
# Line 103  sub x_getdir { Line 103  sub x_getdir {
103    
104  sub file_copy {  sub file_copy {
105          my ( $s_opt, $s_path, $d_opt, $d_path ) = @_;          my ( $s_opt, $s_path, $d_opt, $d_path ) = @_;
106          warn "## file_copy( $s_opt $s_path [",-s $s_path,"] $d_opt $d_path [",-e $d_path ? -s $d_path : 'new',"])\n";          warn "## file_copy( $s_opt $s_path [",-s $s_path,"] $d_opt $d_path [",-e $d_path ? -s $d_path : 'new',"])\n" if $debug;
107          open(my $s, $s_opt, $s_path ) || confess "can't open $s_path: $!\npending = ", dump( $pending );          open(my $s, $s_opt, $s_path ) || confess "can't open $s_path: $!\npending = ", dump( $pending );
108          open(my $d, $d_opt, $d_path ) || confess "can't open $d_path: $!";          open(my $d, $d_opt, $d_path ) || confess "can't open $d_path: $!";
109          my $buff;          my $buff;
# Line 149  sub x_open { Line 149  sub x_open {
149                  trunc => $mode && O_TRUNC,                  trunc => $mode && O_TRUNC,
150          };          };
151          my $path = fixup($file);          my $path = fixup($file);
152          warn "# open( $file, $mode ) pending: ", $pending->{$file}->{open}, " mode $mode: ", dump( $mode_desc )," $path [", -s $path, "]\n";          warn "## open( $file, $mode ) pending: ", $pending->{$file}->{open}, " mode $mode: ", dump( $mode_desc )," $path [", -s $path, "]\n" if $debug;
153          my $fh;          my $fh;
154    
155          my $tmp = $mount->{tmp} . '/' . $file;          my $tmp = $mount->{tmp} . '/' . $file;
# Line 162  sub x_open { Line 162  sub x_open {
162                  file_copy( '<:gzip', $path, '>', $tmp );                  file_copy( '<:gzip', $path, '>', $tmp );
163                  $path = $tmp;                  $path = $tmp;
164          }          }
         warn ">>> open abs path: $path [", -e $path ? -s $path : 'new' , "]\n";  
         return -$! unless sysopen($fh , $path, $mode);  
         warn ">>> after open [",-s $path, "]\n";  
         close($fh);  
165    
166          $pending->{$file}->{path} = $path;          if ( sysopen($fh , $path, $mode) ) {
167          return 0;                  close($fh) || confess "can't close $path: $!";
168                    warn "<<< open $path [", -e $path ? -s $path : 'new' , "]\n";
169                    $pending->{$file}->{path} = $path;
170                    return 0;
171            } else {
172                    warn "ERROR: can't open $path : $!";
173                    return -$!;
174            }
175    
176  }  }
177    
178  sub x_read {  sub x_read {
# Line 204  sub x_write { Line 208  sub x_write {
208          return -ENOSYS() unless open($fh,'+<',$pending->{$file}->{path});          return -ENOSYS() unless open($fh,'+<',$pending->{$file}->{path});
209          if($rv = seek( $fh ,$off,SEEK_SET)) {          if($rv = seek( $fh ,$off,SEEK_SET)) {
210                  $rv = print( $fh $buf );                  $rv = print( $fh $buf );
211                  warn "## ", $pending->{$file}->{path}, " $off ",length( $buf ), "\n" if $debug;                  warn "## write ", $pending->{$file}->{path}, " $off ",length( $buf ), "\n" if $debug;
212          }          }
213          $rv = -ENOSYS() unless $rv;          $rv = -ENOSYS() unless $rv;
214          close($fh);          close($fh);
# Line 219  sub x_unlink   { return unlink_all( shif Line 223  sub x_unlink   { return unlink_all( shif
223  sub x_symlink { return symlink(shift,fixup(shift)) ? 0 : -$!; }  sub x_symlink { return symlink(shift,fixup(shift)) ? 0 : -$!; }
224    
225  sub x_rename {  sub x_rename {
226          my ($old) = fixup(shift);          my ($old,$new) = @_;
227          my ($new) = fixup(shift);          my $old_path = fixup($old);
228          my ($err) = rename($old,$new) ? 0 : -ENOENT();          my $new_path = fixup($new);
229            $new_path .= '.gz' if ( $old_path =~ m/\.gz$/ && $new_path !~ m/\.gz$/ );
230    
231            my $err = rename($old_path,$new_path) ? 0 : -ENOENT();
232            warn "## rename( $old_path => $new_path ) = $err\n";
233    
234            my $tmp = $mount->{tmp} . '/' . $old;
235            if ( -e $tmp ) {
236                    my $new_tmp = $mount->{tmp} . '/' . $new;
237                    rename $tmp, $new_tmp || confess "can't rename $tmp -> $new_tmp : $!";
238            }
239    
240            if (defined( $pending->{$old} )) {
241                    $pending->{$new} = $pending->{$old};
242    
243                    my $path = $pending->{$old}->{path};
244                    $path =~ s/\Q$old\E/$new/;
245                    $pending->{$new}->{path} = $path;
246    
247                    delete( $pending->{$old} );
248            }
249    
250          return $err;          return $err;
251  }  }
252  sub x_link { return link(fixup(shift),fixup(shift)) ? 0 : -$! }  sub x_link { return link(fixup(shift),fixup(shift)) ? 0 : -$! }
# Line 254  sub x_truncate { Line 279  sub x_truncate {
279                  $no_gz =~ s/\.gz$//;                  $no_gz =~ s/\.gz$//;
280                  rename $path, $no_gz || confess "can't rename $path -> $no_gz: $!";                  rename $path, $no_gz || confess "can't rename $path -> $no_gz: $!";
281          }          }
282          warn "## truncate( $file $size ) $path [", -s $path, "]\n";          warn "## truncate( $file $size ) $path [", -s $path, "] = $rv\n" if $debug;
283          $pending->{$file}->{write}++;          $pending->{$file}->{write}++;
284          return $rv;          return $rv;
285  }  }
# Line 292  sub x_release { Line 317  sub x_release {
317                  }                  }
318    
319                  if ( $file =~ $skip_extensions_regex ) {                  if ( $file =~ $skip_extensions_regex ) {
320                          warn "release $file $mode -- uncompressed\n";                          warn "release $file [",-s $path,"] skipped compression\n";
321                          file_copy( '<', $path, '>', $dest ) if ( $path ne $dest );                          file_copy( '<', $path, '>', $dest ) if ( $path ne $dest );
322                  } elsif ( -s $path < $min_compress_size ) {                  } elsif ( -s $path < $min_compress_size ) {
323                          warn "release $file -- uncompressed, too small [", -s $path, "]\n";                          warn "release $file [",-s $path,"] uncompressed, too small\n";
324                          file_copy( '<', $path, '>', $dest ) if ( $path ne $dest );                          file_copy( '<', $path, '>', $dest ) if ( $path ne $dest );
325                  } else {                  } else {
326                          warn "release $file $mode -- compressing\n";                          warn "release $file [",-s $path,"] compressing\n";
327    
328                            my $comp = $dest . '.gz';
329                            file_copy( '<', $path, '>:gzip', $comp );
330    
331                          file_copy( '<', $path, '>:gzip', $dest . '.gz' );                          my ( $size_path, $size_comp ) = ( -s $path, -s $comp );
332    
333                          # FIXME add timeout to remove uncompressed version?                          if ( $size_path <= $size_comp ) {
334                          # FIXME leave uncompressed file if smaller than compressed                                  warn ">>> $size_path <= $size_comp leaving uncompressed\n";
335                          unlink $path || warn "can't remove $path: $!";                                  unlink $comp || warn "can't reamove: $comp: $!";
336                            } else {
337                                    warn ">>> compressed $size_path -> $size_comp ",int(($size_comp * 100) / $size_path),"%\n";
338                                    # FIXME add timeout to remove uncompressed version?
339                                    unlink $path || warn "can't remove $path: $!";
340                            }
341                  }                  }
342          } else {          } else {
343                  warn "release $file, but still used ", $pending->{$file}->{open} , " times, delaying compression\n";                  warn "release $file, but still used ", $pending->{$file}->{open} , " times, delaying compression\n";
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