5 use ID3FS::PathElement::Artist;
6 use ID3FS::PathElement::Album;
7 use ID3FS::PathElement::Boolean;
8 use ID3FS::PathElement::File;
9 use ID3FS::PathElement::Tag;
10 use ID3FS::PathElement::Tagval;
11 use ID3FS::Path::Node;
13 our ($STATE_INVALID, $STATE_ROOT, $STATE_TAG, $STATE_TAGVAL,
14 $STATE_BOOLEAN, $STATE_ALBUMS, $STATE_TRACKLIST,
15 $STATE_FILE, $STATE_ALL)=(0..8);
17 our %priorities=( "OR" => 0, "AND" => 1, "NOT" => 2 );
19 our $PATH_ALLTRACKS="TRACKS";
20 our $PATH_NOARTIST="NOARTIST";
21 our $PATH_NOALBUM="NOALBUM";
26 my $class=ref($proto) || $proto;
33 $self->{verbose}=shift;
34 $self->{maxtagdepth}=shift;
35 $self->{curtagdepth}=0;
36 $self->{path} =~ s/\/\//\//g; # drop doubled slashes
39 # print "STATE: ", $self->state(), "\n";
46 if(($self->state() == $STATE_FILE) ||
47 ($self->state() == $STATE_INVALID))
57 return($self->state() == $STATE_FILE);
63 return($self->state() != $STATE_INVALID);
68 my($self, $mountpoint)=@_;
69 if($self->state() == $STATE_FILE)
71 return $self->filename($mountpoint);
73 return "ERROR"; #should never happen?
81 my $state=$self->state();
82 # print "DIRENTS: STATE: $state\n";
83 # print "DIRENTS: FILE: $self->{path}\n";
84 if($state==$STATE_ALL)
86 @dents=($PATH_ALLTRACKS, $PATH_NOARTIST, $self->artists());
88 elsif($state==$STATE_TAG || $state==$STATE_TAGVAL)
90 my $tag=$self->tail();
91 if($state==$STATE_TAG &&
93 ref($tag) eq "ID3FS::PathElement::Tag" &&
94 $self->{db}->tag_has_values($tag->{id}))
100 if($self->{maxtagdepth} && ($self->{curtagdepth} < $self->{maxtagdepth}))
104 push(@dents, $PATH_ALLTRACKS, $PATH_NOARTIST, $self->artists());
107 elsif($state==$STATE_BOOLEAN)
109 my $parent=$self->tail();
110 unless(defined($parent) &&
111 ref($parent) eq "ID3FS::PathElement::Boolean" &&
112 $parent->{name} eq "NOT")
116 push(@dents,$self->tags());
118 elsif($state==$STATE_ROOT)
120 @dents=(qw(ALL NOT), $self->tags());
122 elsif($state==$STATE_ALBUMS)
124 @dents=($PATH_ALLTRACKS, $PATH_NOALBUM, $self->albums());
126 elsif($state==$STATE_TRACKLIST)
128 @fents=$self->tracks();
132 print "DIRENTS: UNHANDLED STATE: $state\n";
134 return(\@dents, \@fents);
140 @{$self->{components}}=split(/\//, $self->{path});
141 shift @{$self->{components}}; # drop empty field before leading /
142 # print "PATH: $self->{path}\n";
143 $self->state($STATE_ROOT);
144 return if($self->{path} eq "/");
145 my @parts=@{$self->{components}};
147 $self->{elements}=[];
152 while(defined(my $name=shift @parts))
154 # print "NAME: $name\n";
155 my $state=$self->state();
156 if($state==$STATE_INVALID)
158 # print "SM: INVALID: $name\n";
161 elsif($state==$STATE_ROOT)
163 # print "SM: ROOT: $name\n";
167 $self->state($STATE_ALL);
169 elsif($name eq "NOT")
172 push(@{$self->{elements}}, ID3FS::PathElement::Boolean->new($self->{db}, $name));
173 $self->state($STATE_BOOLEAN);
177 $tag=ID3FS::PathElement::Tag->new($self->{db}, $name);
180 push(@{$self->{elements}}, $tag);
182 $self->state($STATE_TAG);
186 $self->state($STATE_INVALID);
190 elsif($state==$STATE_TAG || $state==$STATE_TAGVAL)
192 # print "SM: TAG/TAGVAL($state): $name\n";
193 my $tag=$self->tail();
194 if($state==$STATE_TAG &&
196 ref($tag) eq "ID3FS::PathElement::Tag" &&
197 $self->{db}->tag_has_values($tag->{id}))
199 # print "Parsing: parent: $tag->{id}\n";
200 my $tagval=ID3FS::PathElement::Tag->new($self->{db}, $name, $tag->{id});
203 $self->state($STATE_TAGVAL);
205 push(@{$self->{elements}}, $tagval);
209 $self->state($STATE_INVALID);
212 elsif($name eq $PATH_ALLTRACKS)
214 $self->state($STATE_TRACKLIST);
216 elsif($name eq $PATH_NOARTIST)
218 $self->state($STATE_TRACKLIST);
220 elsif($name eq "AND")
222 $self->state($STATE_BOOLEAN);
223 push(@{$self->{elements}}, ID3FS::PathElement::Boolean->new($self->{db}, $name));
227 $self->state($STATE_BOOLEAN);
228 push(@{$self->{elements}}, ID3FS::PathElement::Boolean->new($self->{db}, $name));
232 my $artist=ID3FS::PathElement::Artist->new($self->{db}, $name);
235 push(@{$self->{elements}}, $artist);
236 $self->state($STATE_ALBUMS);
240 $self->state($STATE_INVALID);
244 elsif($state==$STATE_BOOLEAN)
246 # print "SM: BOOLEAN: $name\n";
247 my $parent=$self->tail();
249 if(defined($parent) &&
250 ref($parent) eq "ID3FS::PathElement::Boolean" &&
251 $parent->{name} eq "NOT")
255 if($allownot && $name eq "NOT")
257 $self->state($STATE_BOOLEAN);
258 push(@{$self->{elements}}, ID3FS::PathElement::Boolean->new($self->{db}, $name));
262 my $tag=ID3FS::PathElement::Tag->new($self->{db}, $name);
265 push(@{$self->{elements}}, $tag);
267 $self->state($STATE_TAG);
271 $self->state($STATE_INVALID);
275 elsif($state==$STATE_ALBUMS)
277 # print "SM: ALBUM: $name\n";
278 if($name eq $PATH_ALLTRACKS)
280 $self->state($STATE_TRACKLIST);
282 elsif($name eq $PATH_NOALBUM)
284 $self->state($STATE_TRACKLIST);
288 my $album=ID3FS::PathElement::Album->new($self->{db}, $name);
291 push(@{$self->{elements}}, $album);
292 $self->state($STATE_TRACKLIST);
296 $self->state($STATE_INVALID);
300 elsif($state==$STATE_TRACKLIST)
302 # print "SM: TRACKLIST: $name\n";
303 my $track=ID3FS::PathElement::File->new($self->{db}, $name);
306 push(@{$self->{elements}}, $track);
307 $self->state($STATE_FILE);
311 $self->state($STATE_INVALID);
314 elsif($state==$STATE_FILE)
316 # print "SM: FILE: $name\n";
317 # Can't have anything after a filename
318 $self->state($STATE_INVALID);
320 elsif($state==$STATE_ALL)
322 if($name eq $PATH_ALLTRACKS)
324 $self->state($STATE_TRACKLIST);
326 elsif($name eq $PATH_NOARTIST)
329 $self->state($STATE_TRACKLIST);
333 my $artist=ID3FS::PathElement::Artist->new($self->{db}, $name);
336 push(@{$self->{elements}}, $artist);
337 $self->state($STATE_ALBUMS);
341 $self->state($STATE_INVALID);
347 print "SM: ERROR: UNKNOWN STATE: $self->{state}\n";
348 $self->state($STATE_INVALID);
352 if($root_not && ($tags_seen < 2))
357 # remove trailing boolean
358 my @elements=@{$self->{elements}};
359 while(@elements && ref($elements[$#elements]) eq "ID3FS::PathElement::Boolean")
363 # sort elements by precedence
364 @elements=$self->sort_elements(@elements);
365 $self->{tagtree}=$self->elements_to_tree(\@elements);
368 ($self->{sqlconditions},
369 $self->{joins}) = $self->{tagtree}->to_sql();
370 # print "TREE: ", $self->{tagtree}->print(), "\n";
371 # print("SQL CONDITION(", scalar(@{$self->{joins}}), "): ",
372 # $self->{sqlconditions}, "\n");
374 # print Dumper $self->{tagtree};
380 my($self, $newstate)=@_;
381 if(defined($newstate))
383 $self->{state}=$newstate;
384 $self->{curtagdepth}++ if($newstate == $STATE_TAG);
386 return $self->{state};
391 my($self, $elements)=@_;
392 return undef unless(@$elements);
393 my ($left, $right, $op)=(undef, undef, undef);
394 my $thing=pop @$elements;
395 if(ref($thing) eq "ID3FS::PathElement::Boolean")
398 $right=$self->elements_to_tree($elements);
399 if($op->{name} ne "NOT")
401 $left=$self->elements_to_tree($elements);
403 return ID3FS::Path::Node->new($left, $op, $right);
407 return ID3FS::Path::Node->new($thing);
411 # Dijkstra's shunting-yard algorithm
414 my ($self, @input)=@_;
417 # print "INPUT: ", join(', ', map { $_->{name}; } @input), "\n";
418 while(my $thing = shift @input)
420 if(ref($thing) eq "ID3FS::PathElement::Tag")
422 # Handle tag values by dropping parent
423 if(@input && ref($input[0]) eq "ID3FS::PathElement::Tag")
427 push(@output, $thing);
429 elsif(ref($thing) eq "ID3FS::PathElement::Boolean")
433 ($priorities{$thing->{name}} <= $priorities{$opstack[$#opstack]->{name}}))
435 push(@output, pop(@opstack));
437 push(@opstack, $thing);
442 push(@output, pop(@opstack));
444 # print "STACK: ", join(', ', map { $_->{name}; } @output), "\n";
451 return() unless(defined($self->{tagtree}));
452 return($self->{tagtree}->used_tags());
458 my $tail=$self->tail();
459 if($tail && ref($tail) eq "ID3FS::PathElement::Tag")
461 return($self->{db}->tag_has_values($tail->{id}));
468 my $tail=$self->tail();
469 if($tail && ref($tail) eq "ID3FS::PathElement::Tag")
476 sub trailing_tag_parent
479 my $tail=$self->tail();
480 if($tail && ref($tail) eq "ID3FS::PathElement::Tag")
482 return($tail->{parents_id});
490 return($self->{elements}->[$#{$self->{elements}}]);
493 # the one before last
497 return($self->{elements}->[($#{$self->{elements}}) - 1]);
500 ######################################################################
505 if(!$self->{tagtree}) # / or /NOT
507 my $sql="SELECT DISTINCT name FROM tags WHERE parents_id='';";
508 return($self->{db}->cmd_firstcol($sql));
510 my $hasvals=$self->expecting_values();
511 my $parent=$self->trailing_tag_parent();
512 # print "THASVALS: $hasvals\n";
513 # print "TPARENT: ", (defined($parent)? $parent : "NO"), "\n";
515 my $sql=("SELECT tags.name FROM (\n" .
516 $self->tags_subselect() .
518 "INNER JOIN files_x_tags ON subselect.files_id=files_x_tags.files_id\n" .
519 "INNER JOIN tags ON files_x_tags.tags_id=tags.id\n");
520 my @allused=$self->used_tags();
521 my @used=grep { ref($_) ne "ARRAY"; } @allused;
522 my @used_with_vals=grep { ref($_) eq "ARRAY"; } @allused;
523 # print "tags(): USED: ", join(", ", @used), "\n";
524 # print "tags(): USED_WITH_VALS: ", join(", ", map { "[".$_->[0]. ", ".$_->[1]."]";} @used_with_vals), "\n";
527 my $id=$self->trailing_tag_id();
530 # print "HAS_VALUES\n";
531 my @values=map { "'".$_->[1]."'"; } grep { $_->[0] == $id; } @used_with_vals;
532 my $clause="(tags.parents_id='$id'";
535 $clause .= " AND tags.id NOT IN (" . join(', ', @values) . ")";
538 push(@andclauses, $clause);
542 # print "HASNT VALUES\n";;
545 push(@andclauses, "(NOT (tags.parents_id='' AND tags.id IN (" . join(', ', @used) . ")))");
547 for my $pair (@used_with_vals)
549 push(@andclauses, "(NOT (tags.parents_id='" . $pair->[0] . "' AND tags.id='" . $pair->[1] . "'))");
553 my $parentclause= "(tags.parents_id='";
556 $parentclause .= $id;
560 $parentclause .= $parent;
562 $parentclause .= "')";
563 push(@andclauses, $parentclause);
567 push(@andclauses, '( ' . join(' OR ', @orclauses) . ' )');
571 $sql .= "WHERE " . join(' AND ', @andclauses) . "\n";
573 $sql .= "GROUP BY tags.name;";
574 print "SQL(TAGS): $sql\n" if($self->{verbose});
575 my @tagnames=$self->{db}->cmd_firstcol($sql);
576 print("SUBNAMES: ", join(', ', @tagnames), "\n") if($self->{verbose});
583 if(!@{$self->{elements}}) # /ALL
585 my $sql="SELECT DISTINCT name FROM artists WHERE name!='';";
586 return($self->{db}->cmd_firstcol($sql));
589 my $sql=$self->sql_start("artists.name");
590 $sql .= ("INNER JOIN artists ON files.artists_id=artists.id\n" .
591 "WHERE artists.name != ''\n" .
592 "GROUP BY artists.name;");
593 print "SQL(ARTISTS): $sql\n" if($self->{verbose});
594 my @tagnames=$self->{db}->cmd_firstcol($sql);
595 print("ARTISTS: ", join(', ', @tagnames), "\n") if($self->{verbose});
603 my $tail=$self->tail();
604 # FIXME: rework PathElements
605 if(ref($tail) eq "ID3FS::PathElement::Artist")
607 return $self->artist_albums($tail->{id});
609 my $sql=$self->sql_start("albums.name");
610 $sql .= ("INNER JOIN albums ON files.albums_id=albums.id\n" .
611 "WHERE albums.name != ''\n" .
612 "GROUP BY albums.name;");
613 print "SQL(ALBUMS): \n$sql\n" if($self->{verbose});
614 my @names=$self->{db}->cmd_firstcol($sql);
615 print("ALBUMS: ", join(', ', @names), "\n") if($self->{verbose});
621 my($self, $artist_id)=@_;
622 my $sql=$self->sql_start("albums.name");
623 $sql .= ("INNER JOIN albums ON albums.id=files.albums_id\n" .
624 "INNER JOIN artists ON artists.id=files.artists_id\n" .
625 "WHERE artists.id=? and albums.name <> ''\n" .
626 "GROUP BY albums.name\n");
627 print "ARTIST_ALBUMS SQL: $sql\n" if($self->{verbose});
628 my @albums=$self->{db}->cmd_firstcol($sql, $artist_id);
629 print("ALBUMS: ", join(', ', @albums), "\n") if($self->{verbose});
635 my($self, $artist_id)=@_;
636 my $sql=$self->sql_start("files.name");
637 $sql .= ("INNER JOIN artists ON artists.id=files.artists_id\n" .
638 "INNER JOIN albums ON albums.id=files.albums_id\n" .
639 "WHERE artists.id=? AND albums.name=''\n" .
640 "GROUP BY files.name\n");
641 print "ARTIST_TRACKS SQL: $sql\n" if($self->{verbose});
642 my @names=$self->{db}->cmd_firstcol($sql, $artist_id);
643 print("ARTISTTRACKS: ", join(', ', @names), "\n") if($self->{verbose});
649 my($self, $artist_id, $album_id)=@_;
650 my $sql=("SELECT files.name FROM files\n" .
651 "INNER JOIN albums ON albums.id=files.albums_id\n" .
652 "INNER JOIN artists ON artists.id=files.artists_id\n" .
653 "WHERE artists.id=? AND albums.id=?\n" .
654 "GROUP BY files.name\n");
655 print "ALBUM_TRACKS SQL($artist_id, $album_id): $sql\n" if($self->{verbose});
656 my @names=$self->{db}->cmd_firstcol($sql, $artist_id, $album_id);
657 print("TRACKS: ", join(', ', @names), "\n") if($self->{verbose});
664 # FIXME: rework PathElements
665 my $tail=$self->tail();
666 if(ref($tail) eq "ID3FS::PathElement::Artist")
668 return $self->artist_tracks($tail->{id});
670 elsif(ref($tail) eq "ID3FS::PathElement::Album")
673 my $artist=$self->tail_parent();
674 if(defined($artist) && (ref($artist) eq "ID3FS::PathElement::Artist"))
676 # should always happen
677 $artist_id=$artist->{id};
679 return $self->album_tracks($artist_id, $tail->{id});
681 my $sql=$self->sql_start("files.name");
682 $sql .= "INNER JOIN artists ON files.artists_id=artists.id\n";
683 if($self->{components}->[$#{$self->{components}}] eq $PATH_NOARTIST)
685 $sql .= "WHERE artists.name =''\n";
687 $sql .= "GROUP BY files.name;";
688 print "TRACKS SQL($self->{path}): $sql\n" if($self->{verbose});
689 my @names=$self->{db}->cmd_firstcol($sql);
690 print("TRACKS: ", join(', ', @names), "\n") if($self->{verbose});
696 my($self, $mountpoint)=@_;
697 my $tail=$self->tail();
698 if(ref($tail) eq "ID3FS::PathElement::File")
701 my $sql=("SELECT paths.name, files.name FROM files\n" .
702 "INNER JOIN paths ON files.paths_id=paths.id\n" .
703 "WHERE files.id=?\n" .
704 "GROUP BY paths.name, files.name");
705 print "FILENAME SQL: $sql\n" if($self->{verbose});
706 my ($path, $name)=$self->{db}->cmd_onerow($sql, $id);
707 my $id3fs_path=join('/', map { $_->{name}; } @{$self->{elements}});
708 return($self->{db}->relativise($path, $name, $mountpoint));
710 die("DB::filename: unhandled case\n"); #FIXME
716 my $hasvals=$self->expecting_values();
717 # we need to specially handle a bare /NOT/tag with no other clauses,
718 # using a simple WHERE id !='tagid' instead of a LEFT JOIN
719 if($self->{bare_not})
721 return $self->bare_not_subselect();
725 return "\tSELECT id FROM files AS files_id\n";
727 my $tree=$self->{tagtree};
728 my $parent=$self->trailing_tag_parent();
730 # print "ELEMENTS: ", join('/', map { $_->{name}; } @{$self->{elements}}), "\n";
731 # print "TREE: ", $tree->print(), "\n";
735 $tag=$self->trailing_tag_id();
736 # print "Trailing id: $tag\n";
738 my ($sqlclause, @joins)=(undef, ());
739 ($sqlclause, @joins) = $tree->to_sql($hasvals) if($tree);
740 # print "SQL(" . scalar(@joins) .": $sqlclause\n";
741 my $sql="\tSELECT fxt1.files_id FROM tags t1";
744 # $joinsneeded++ if($tag);
745 for(my $i=0; $i <= $#joins; $i++)
749 my $inner=("\t$join JOIN files_x_tags fxt$cnt ON " .
750 "t${cnt}.id=fxt${cnt}.tags_id");
753 push(@crosses, "CROSS JOIN tags t$cnt");
754 $inner .= " AND fxt1.files_id=fxt${cnt}.files_id";
756 push(@inners, $inner);
758 $sql .= ("\n\t" . join(" ", @crosses)) if(@crosses);
759 $sql .= ("\n" . join("\n", @inners)) if(@inners);
760 $sql .= "\n\tWHERE $sqlclause" if($sqlclause);
763 # $sql .= " AND t${joinsneeded}.parents_id='$tag'";
765 $sql .= "\n\tGROUP BY fxt1.files_id\n";
769 sub bare_not_subselect
772 my @tags=grep { ref($_) eq "ID3FS::PathElement::Tag"; } @{$self->{elements}};
773 my $sql=("\tSELECT f1.id AS files_id FROM files f1 WHERE f1.id NOT IN (\n" .
774 "\t\tSELECT fxt1.files_id FROM tags t1\n" .
775 "\t\tINNER JOIN files_x_tags fxt1 ON t1.id=fxt1.tags_id\n" .
777 if(scalar(@tags) > 1)
779 $sql .= ("(t1.parents_id='" . $tags[0]->{id} . "' AND t1.id='" .
780 $tags[1]->{id} . "')");
784 $sql .= ("(t1.parents_id='' AND t1.id='" . $tags[0]->{id} . "')");
786 $sql .= "\n\t\tGROUP BY fxt1.files_id\n\t)\n";
792 my($self, $tables)=@_;
793 my $sql="SELECT $tables FROM ";
801 $self->tags_subselect() .
803 "INNER JOIN files ON subselect.files_id=files.id\n");
809 sub constraints_tag_list
811 my($self, @constraints)=@_;
815 for my $constraint (@constraints)
817 # print ref($constraint), ": ", $constraint->{name}, "\n";
818 if(ref($constraint) eq "ID3FS::PathElement::Tag")
820 if(defined($lasttag))
823 push(@tags_vals, [$lasttag, $constraint->{id}]) if defined($constraint->{id});
826 elsif($self->tag_has_values($constraint->{id}))
828 # print "HASVALUES\n";
829 $lasttag=$constraint->{id} if defined($constraint->{id});
833 # print "NOVALUES\n";
834 push(@tags, $constraint->{id}) if(defined($constraint->{id}));
838 unless($self->{db}->{postgres})
840 @tags=map{ "\"$_\""; } @tags;
841 @tags_vals=map( { [ map({ "\"$_\""; } @$_ ) ] } @tags_vals);
842 $lasttag="\"$lasttag\"" if defined($lasttag);
844 return(\@tags, \@tags_vals, $lasttag);
847 # Not used, slows things down too much
851 my $base=$self->{path};
853 # depth 4 to allow for tag/tagval/AND/NOT
857 # print "\nFILTER (",$self->state(), "): $base / $dir\n";
858 if($self->empty("$base/$dir", $maxdepth))
860 # print "empty: $base / $dir\n";
864 # print "non-empty, accepting: $base / $dir\n";
865 push(@outdirs, $dir);
873 my($self, $dir, $maxdepth)=@_;
874 return 0 unless($maxdepth);
875 # print "testing($maxdepth): $dir\n";
876 my $path=ID3FS::Path->new($self->{db}, $dir, $self->{verbose}, $self->{tagdepth});
877 # print "PATH INVALID\n" unless($path->isvalid());
878 return 1 unless($path->isvalid());
879 my($subdirs,$subfiles)=$path->dirents();
880 # print "SUBDENTS: ", join(", ", @$subdirs, @$subfiles), "\n";
881 # print("SUBFILES: ", join(', ', @$subfiles), "\n") if(@$subfiles);
882 return 0 if(@$subfiles);
883 for my $subdir (@$subdirs)
885 # print "SUBSUB $dir/$subdir\n";
886 if(1) #$self->dir_is_special($subdir))
888 if($self->empty("$dir/$subdir", ($maxdepth-1)))
890 # print "EMPTY: $dir / $subdir\n";
894 # print "NONEMPTY: $dir / $subdir\n";
902 # return 0 if($self->nonempty("$dir/$subdir", ($maxdepth-1)));
910 my $id=$self->{db}->lookup_id("tags", $dir);
911 if((grep { $_ eq $dir; } (qw(AND OR NOT), $PATH_ALLTRACKS,
912 $PATH_NOARTIST, $PATH_NOALBUM)) ||
913 ($id && $self->{db}->tag_has_values($id)))