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->{path} =~ s/\/\//\//g; # drop doubled slashes
36 # print "STATE: ", $self->state(), "\n";
43 if(($self->state() == $STATE_FILE) ||
44 ($self->state() == $STATE_INVALID))
54 return 1 if($self->state() == $STATE_FILE);
61 return($self->state() != $STATE_INVALID);
66 my($self, $mountpoint)=@_;
67 if($self->state() == $STATE_FILE)
69 return $self->filename($mountpoint, $self);
71 return "ERROR"; #should never happen?
79 my $state=$self->state();
80 # print "DIRENTS: STATE: $state\n";
81 # print "DIRENTS: FILE: $self->{path}\n";
82 if($state==$STATE_ALL)
84 push(@dents, $PATH_ALLTRACKS, $PATH_NOARTIST, $self->artists());
86 elsif($state==$STATE_TAG || $state==$STATE_TAGVAL)
88 my $tag=$self->tail();
89 if($state==$STATE_TAG &&
91 ref($tag) eq "ID3FS::PathElement::Tag" &&
92 $self->{db}->tag_has_values($tag->{id}))
98 push(@dents, qw(AND OR), $PATH_ALLTRACKS, $PATH_NOARTIST, $self->artists());
101 elsif($state==$STATE_BOOLEAN)
103 my $parent=$self->tail();
104 unless(defined($parent) &&
105 ref($parent) eq "ID3FS::PathElement::Boolean" &&
106 $parent->{name} eq "NOT")
110 push(@dents, $self->tags());
112 elsif($state==$STATE_ROOT)
114 @dents=(qw(ALL NOT), $self->tags());
116 elsif($state==$STATE_ALBUMS)
118 @dents=($PATH_ALLTRACKS, $PATH_NOALBUM, $self->albums());
120 elsif($state==$STATE_TRACKLIST)
122 @fents=$self->tracks();
126 print "DIRENTS: UNHANDLED STATE: $state\n";
128 return(\@dents, \@fents);
134 @{$self->{components}}=split(/\//, $self->{path});
135 shift @{$self->{components}}; # drop empty field before leading /
136 # print "PATH: $self->{path}\n";
137 $self->state($STATE_ROOT);
138 return if($self->{path} eq "/");
139 my @parts=@{$self->{components}};
141 $self->{elements}=[];
146 while(defined(my $name=shift @parts))
148 # print "NAME: $name\n";
149 my $state=$self->state();
150 if($state==$STATE_INVALID)
152 # print "SM: INVALID: $name\n";
155 elsif($state==$STATE_ROOT)
157 # print "SM: ROOT: $name\n";
161 $self->state($STATE_ALL);
163 elsif($name eq "NOT")
166 push(@{$self->{elements}}, ID3FS::PathElement::Boolean->new($self->{db}, $name));
167 $self->state($STATE_BOOLEAN);
171 $tag=ID3FS::PathElement::Tag->new($self->{db}, $name);
174 push(@{$self->{elements}}, $tag);
176 $self->state($STATE_TAG);
180 $self->state($STATE_INVALID);
184 elsif($state==$STATE_TAG || $state==$STATE_TAGVAL)
186 # print "SM: TAG/TAGVAL($state): $name\n";
187 my $tag=$self->tail();
188 if($state==$STATE_TAG &&
190 ref($tag) eq "ID3FS::PathElement::Tag" &&
191 $self->{db}->tag_has_values($tag->{id}))
193 # print "Parsing: parent: $tag->{id}\n";
194 my $tagval=ID3FS::PathElement::Tag->new($self->{db}, $name, $tag->{id});
197 $self->state($STATE_TAGVAL);
199 push(@{$self->{elements}}, $tagval);
203 $self->state($STATE_INVALID);
206 elsif($name eq $PATH_ALLTRACKS)
208 $self->state($STATE_TRACKLIST);
210 elsif($name eq $PATH_NOARTIST)
212 $self->state($STATE_TRACKLIST);
214 elsif($name eq "AND")
216 $self->state($STATE_BOOLEAN);
217 push(@{$self->{elements}}, ID3FS::PathElement::Boolean->new($self->{db}, $name));
221 $self->state($STATE_BOOLEAN);
222 push(@{$self->{elements}}, ID3FS::PathElement::Boolean->new($self->{db}, $name));
226 my $artist=ID3FS::PathElement::Artist->new($self->{db}, $name);
229 push(@{$self->{elements}}, $artist);
230 $self->state($STATE_ALBUMS);
234 $self->state($STATE_INVALID);
238 elsif($state==$STATE_BOOLEAN)
240 # print "SM: BOOLEAN: $name\n";
241 my $parent=$self->tail();
243 if(defined($parent) &&
244 ref($parent) eq "ID3FS::PathElement::Boolean" &&
245 $parent->{name} eq "NOT")
249 if($allownot && $name eq "NOT")
251 $self->state($STATE_BOOLEAN);
252 push(@{$self->{elements}}, ID3FS::PathElement::Boolean->new($self->{db}, $name));
256 my $tag=ID3FS::PathElement::Tag->new($self->{db}, $name);
259 push(@{$self->{elements}}, $tag);
261 $self->state($STATE_TAG);
265 $self->state($STATE_INVALID);
269 elsif($state==$STATE_ALBUMS)
271 # print "SM: ALBUM: $name\n";
272 if($name eq $PATH_ALLTRACKS)
274 $self->state($STATE_TRACKLIST);
276 elsif($name eq $PATH_NOALBUM)
278 $self->state($STATE_TRACKLIST);
282 my $album=ID3FS::PathElement::Album->new($self->{db}, $name);
285 push(@{$self->{elements}}, $album);
286 $self->state($STATE_TRACKLIST);
290 $self->state($STATE_INVALID);
294 elsif($state==$STATE_TRACKLIST)
296 # print "SM: TRACKLIST: $name\n";
297 my $track=ID3FS::PathElement::File->new($self->{db}, $name);
300 push(@{$self->{elements}}, $track);
301 $self->state($STATE_FILE);
305 $self->state($STATE_INVALID);
308 elsif($state==$STATE_FILE)
310 # print "SM: FILE: $name\n";
311 # Can't have anything after a filename
312 $self->state($STATE_INVALID);
314 elsif($state==$STATE_ALL)
316 if($name eq $PATH_ALLTRACKS)
318 $self->state($STATE_TRACKLIST);
320 elsif($name eq $PATH_NOARTIST)
323 $self->state($STATE_TRACKLIST);
327 my $artist=ID3FS::PathElement::Artist->new($self->{db}, $name);
330 push(@{$self->{elements}}, $artist);
331 $self->state($STATE_ALBUMS);
335 $self->state($STATE_INVALID);
341 print "SM: ERROR: UNKNOWN STATE: $self->{state}\n";
342 $self->state($STATE_INVALID);
346 if($root_not && ($tags_seen < 2))
351 # remove trailing boolean
352 my @elements=@{$self->{elements}};
353 while(@elements && ref($elements[$#elements]) eq "ID3FS::PathElement::Boolean")
357 # sort elements by precedence
358 @elements=$self->sort_elements(@elements);
359 $self->{tagtree}=$self->elements_to_tree(\@elements);
362 ($self->{sqlconditions},
363 $self->{joins}) = $self->{tagtree}->to_sql();
364 # print "TREE: ", $self->{tagtree}->print(), "\n";
365 # print("SQL CONDITION(", scalar(@{$self->{joins}}), "): ",
366 # $self->{sqlconditions}, "\n");
368 # print Dumper $self->{tagtree};
374 my($self, $newstate)=@_;
375 $self->{state}=$newstate if(defined($newstate));
376 return $self->{state};
381 my($self, $elements)=@_;
382 return undef unless(@$elements);
383 my ($left, $right, $op)=(undef, undef, undef);
384 my $thing=pop @$elements;
385 if(ref($thing) eq "ID3FS::PathElement::Boolean")
388 $right=$self->elements_to_tree($elements);
389 if($op->{name} ne "NOT")
391 $left=$self->elements_to_tree($elements);
393 return ID3FS::Path::Node->new($left, $op, $right);
397 return ID3FS::Path::Node->new($thing);
401 # Dijkstra's shunting-yard algorithm
404 my ($self, @input)=@_;
407 # print "INPUT: ", join(', ', map { $_->{name}; } @input), "\n";
408 while(my $thing = shift @input)
410 if(ref($thing) eq "ID3FS::PathElement::Tag")
412 # Handle tag values by dropping parent
413 if(@input && ref($input[0]) eq "ID3FS::PathElement::Tag")
417 push(@output, $thing);
419 elsif(ref($thing) eq "ID3FS::PathElement::Boolean")
423 ($priorities{$thing->{name}} <= $priorities{$opstack[$#opstack]->{name}}))
425 push(@output, pop(@opstack));
427 push(@opstack, $thing);
432 push(@output, pop(@opstack));
434 # print "STACK: ", join(', ', map { $_->{name}; } @output), "\n";
441 return() unless(defined($self->{tagtree}));
442 return($self->{tagtree}->used_tags());
448 my $tail=$self->tail();
449 if($tail && ref($tail) eq "ID3FS::PathElement::Tag")
451 return($self->{db}->tag_has_values($tail->{id}));
458 my $tail=$self->tail();
459 if($tail && ref($tail) eq "ID3FS::PathElement::Tag")
466 sub trailing_tag_parent
469 my $tail=$self->tail();
470 if($tail && ref($tail) eq "ID3FS::PathElement::Tag")
472 return($tail->{parents_id});
480 return($self->{elements}->[$#{$self->{elements}}]);
483 # the one before last
487 return($self->{elements}->[($#{$self->{elements}}) - 1]);
490 ######################################################################
495 if(!$self->{tagtree}) # / or /NOT # FIXME: /ALL too?
497 my $sql="SELECT DISTINCT name FROM tags WHERE parents_id='';";
498 return($self->{db}->cmd_firstcol($sql));
500 my $hasvals=$self->tag_has_values();
501 my $parent=$self->trailing_tag_parent();
502 # print "THASVALS: $hasvals\n";
503 # print "TPARENT: ", (defined($parent)? $parent : "NO"), "\n";
505 my $sql=("SELECT tags.name FROM (\n" .
506 $self->tags_subselect() .
508 "INNER JOIN files_x_tags ON subselect.files_id=files_x_tags.files_id\n" .
509 "INNER JOIN tags ON files_x_tags.tags_id=tags.id\n");
510 my @allused=$self->used_tags();
511 my @used=grep { ref($_) ne "ARRAY"; } @allused;
512 my @used_with_vals=grep { ref($_) eq "ARRAY"; } @allused;
513 # print "tags(): USED: ", join(", ", @used), "\n";
514 # print "tags(): USED_WITH_VALS: ", join(", ", map { "[".$_->[0]. ", ".$_->[1]."]";} @used_with_vals), "\n";
517 my $id=$self->trailing_tag_id();
520 # print "HAS_VALUES\n";
521 my @values=map { "'".$_->[1]."'"; } grep { $_->[0] == $id; } @used_with_vals;
522 my $clause="(tags.parents_id='$id'";
525 $clause .= " AND tags.id NOT IN (" . join(', ', @values) . ")";
528 push(@andclauses, $clause);
532 # print "HASNT VALUES\n";;
535 push(@andclauses, "(NOT (tags.parents_id='' AND tags.id IN (" . join(', ', @used) . ")))");
537 for my $pair (@used_with_vals)
539 push(@andclauses, "(NOT (tags.parents_id='" . $pair->[0] . "' AND tags.id='" . $pair->[1] . "'))");
543 my $parentclause= "(tags.parents_id='";
546 $parentclause .= $id;
550 $parentclause .= $parent;
552 $parentclause .= "')";
553 push(@andclauses, $parentclause);
557 push(@andclauses, '( ' . join(' OR ', @orclauses) . ' )');
561 $sql .= "WHERE " . join(' AND ', @andclauses) . "\n";
563 $sql .= "GROUP BY tags.name;";
564 # print "SQL(TAGS): $sql\n";
565 my @tagnames=$self->{db}->cmd_firstcol($sql);
566 # print "SUBNAMES: ", join(', ', @tagnames), "\n";
572 my($self, $tagid)=@_;
573 my $sql=("SELECT DISTINCT name FROM tags\n" .
574 "WHERE parents_id=?");
575 my @tags=$self->{db}->cmd_firstcol($sql, $tagid);
576 @tags=map { length($_) ? $_ : "NOVALUE"; } @tags;
583 if(!@{$self->{elements}}) # /ALL
585 my $sql="SELECT DISTINCT name FROM artists WHERE name!='';";
586 return($self->{db}->cmd_firstcol($sql));
589 my $sql=("SELECT artists.name FROM (\n" .
590 $self->tags_subselect() .
592 "INNER JOIN files ON subselect.files_id=files.id\n" .
593 "INNER JOIN artists ON files.artists_id=artists.id\n" .
594 "WHERE artists.name != ''\n" .
595 "GROUP BY artists.name;");
596 # print "SQL(ARTISTS): $sql\n";
597 my @tagnames=$self->{db}->cmd_firstcol($sql);
598 print "ARTISTS: ", join(', ', @tagnames), "\n";
606 my $tail=$self->tail();
607 # FIXME: rework PathElements
608 if(ref($tail) eq "ID3FS::PathElement::Artist")
610 return $self->artist_albums($tail->{id});
615 $sql="SELECT name FROM albums";
619 $sql=("SELECT albums.name\n" .
621 $self->tags_subselect() .
622 "\t) AS subselect\n" .
623 "INNER JOIN files ON subselect.files_id=files.id\n" .
624 "INNER JOIN albums ON files.albums_id=albums.id\n" .
625 "WHERE albums.name != ''\n" .
626 "GROUP BY albums.name;");
628 # print "SQL(ALBUMS): \n$sql\n";
629 my @names=$self->{db}->cmd_firstcol($sql);
630 print "ALBUMS: ", join(', ', @names), "\n";
636 my($self, $artist_id)=@_;
637 my $sql="SELECT albums.name FROM ";
645 $self->tags_subselect() .
647 "INNER JOIN files ON subselect.files_id=files.id\n");
649 $sql .= ("INNER JOIN albums ON albums.id=files.albums_id\n" .
650 "INNER JOIN artists ON artists.id=files.artists_id\n" .
651 "WHERE artists.id=? and albums.name <> ''\n" .
652 "GROUP BY albums.name\n");
653 # print "ARTIST_ALBUMS SQL: $sql\n";
654 my @albums=$self->{db}->cmd_firstcol($sql, $artist_id);
655 print "ALBUMS: ", join(', ', @albums), "\n";
661 my($self, $artist_id)=@_;
662 my $sql="SELECT files.name FROM ";
670 $self->tags_subselect() .
671 "\t) AS subselect\n" .
672 "INNER JOIN files ON subselect.files_id=files.id\n");
674 $sql .= ("INNER JOIN artists ON artists.id=files.artists_id\n" .
675 "INNER JOIN albums ON albums.id=files.albums_id\n" .
676 "WHERE artists.id=? AND albums.name=''\n" .
677 "GROUP BY files.name\n");
678 # print "ARTIST_TRACKS SQL: $sql\n";
679 my @names=$self->{db}->cmd_firstcol($sql, $artist_id);
680 print "ARTISTTRACKS: ", join(', ', @names), "\n";
686 my($self, $artist_id, $album_id)=@_;
687 my $sql=("SELECT files.name FROM files\n" .
688 "INNER JOIN albums ON albums.id=files.albums_id\n" .
689 "INNER JOIN artists ON artists.id=files.artists_id\n" .
690 "WHERE artists.id=? AND albums.id=?\n" .
691 "GROUP BY files.name\n");
692 # print "ALBUM_TRACKS SQL($artist_id, $album_id): $sql\n";
693 my @names=$self->{db}->cmd_firstcol($sql, $artist_id, $album_id);
694 print "TRACKS: ", join(', ', @names), "\n";
701 # FIXME: rework PathElements
702 my $tail=$self->tail();
703 if(ref($tail) eq "ID3FS::PathElement::Artist")
705 return $self->artist_tracks($tail->{id});
707 elsif(ref($tail) eq "ID3FS::PathElement::Album")
710 my $artist=$self->tail_parent();
711 if(defined($artist) && (ref($artist) eq "ID3FS::PathElement::Artist"))
713 # should always happen
714 $artist_id=$artist->{id};
716 return $self->album_tracks($artist_id, $tail->{id});
718 my $sql="SELECT files.name FROM ";
726 $self->tags_subselect() .
728 "INNER JOIN files ON files.id=subselect.files_id\n");
730 $sql .= "INNER JOIN artists ON files.artists_id=artists.id\n";
731 if($self->{components}->[$#{$self->{components}}] eq $PATH_NOARTIST)
733 $sql .= "WHERE artists.name =''\n";
735 $sql .= "GROUP BY files.name;";
736 # print "TRACKS SQL($self->{path}): $sql\n";
737 my @names=$self->{db}->cmd_firstcol($sql);
738 print "TRACKS: ", join(', ', @names), "\n";
744 my($self, $mountpoint)=@_;
745 my $tail=$self->tail();
746 if(ref($tail) eq "ID3FS::PathElement::File")
749 my $sql=("SELECT paths.name, files.name FROM files\n" .
750 "INNER JOIN paths ON files.paths_id=paths.id\n" .
751 "WHERE files.id=?\n" .
752 "GROUP BY paths.name, files.name");
753 # print "FILENAME SQL: $sql\n";
754 my ($path, $name)=$self->{db}->cmd_onerow($sql, $id);
755 my $id3fs_path=join('/', map { $_->{name}; } @{$self->{elements}});
756 return($self->{db}->relativise($path, $name, $mountpoint, $id3fs_path));
758 die("DB::filename: unhandled case\n"); #FIXME
764 my $hasvals=$self->tag_has_values();
765 # we need to specially handle a bare /NOT/tag with no other clauses,
766 # using a simple WHERE id !='tagid' instead of a LEFT JOIN
767 if($self->{bare_not})
769 return $self->bare_not_subselect();
773 return "\tSELECT id FROM files AS files_id\n";
775 my $tree=$self->{tagtree};
776 my $parent=$self->trailing_tag_parent();
778 # print "ELEMENTS: ", join('/', map { $_->{name}; } @{$self->{elements}}), "\n";
779 # print "TREE: ", $tree->print(), "\n";
783 $tag=$self->trailing_tag_id();
784 # print "Trailing id: $tag\n";
786 my ($sqlclause, @joins)=(undef, ());
787 ($sqlclause, @joins) = $tree->to_sql($hasvals) if($tree);
788 # print "SQL(" . scalar(@joins) .": $sqlclause\n";
789 my $sql="\tSELECT fxt1.files_id FROM tags t1";
792 # $joinsneeded++ if($tag);
793 for(my $i=0; $i <= $#joins; $i++)
797 my $inner=("\t$join JOIN files_x_tags fxt$cnt ON " .
798 "t${cnt}.id=fxt${cnt}.tags_id");
801 push(@crosses, "CROSS JOIN tags t$cnt");
802 $inner .= " AND fxt1.files_id=fxt${cnt}.files_id";
804 push(@inners, $inner);
806 $sql .= ("\n\t" . join(" ", @crosses)) if(@crosses);
807 $sql .= ("\n" . join("\n", @inners)) if(@inners);
808 $sql .= "\n\tWHERE $sqlclause" if($sqlclause);
811 # $sql .= " AND t${joinsneeded}.parents_id='$tag'";
813 $sql .= "\n\tGROUP BY fxt1.files_id\n";
817 sub bare_not_subselect
820 my @tags=grep { ref($_) eq "ID3FS::PathElement::Tag"; } @{$self->{elements}};
821 my $sql=("\tSELECT f1.id AS files_id FROM files f1 WHERE f1.id NOT IN (\n" .
822 "\t\tSELECT fxt1.files_id FROM tags t1\n" .
823 "\t\tINNER JOIN files_x_tags fxt1 ON t1.id=fxt1.tags_id\n" .
825 if(scalar(@tags) > 1)
827 $sql .= ("(t1.parents_id='" . $tags[0]->{id} . "' AND t1.id='" .
828 $tags[1]->{id} . "')");
832 $sql .= ("(t1.parents_id='' AND t1.id='" . $tags[0]->{id} . "')");
834 $sql .= "\n\t\tGROUP BY fxt1.files_id\n\t)\n";
838 sub tags_subselect_and_not
840 my($self,@constraints)=@_;
841 my ($tags, $tags_vals, $parent)=$self->constraints_tag_list(@constraints);
843 my @tags_vals=@$tags_vals;;
851 $sql="\tSELECT fxt" . scalar(@tags) . ".files_id FROM files_x_tags fxt1\n";
852 push(@andclauses, "\t\tfxt${cnt}.tags_id=$tag");
856 $sql .= ("\tLEFT JOIN files_x_tags fxt$cnt ON fxt" .
857 ($cnt-1) . ".files_id=fxt${cnt}.files_id\n");
858 push(@andclauses, "\t\tfxt${cnt}.tags_id IS NULL");
860 print "AND: @andclauses\n";
865 $sql .= "\tWHERE\n\t\t";
866 $sql .= join(" AND\n\t\t", @andclauses) . "\n";
868 $sql .= "\tGROUP BY fxt". scalar(@tags).".files_id\n";
873 sub tags_subselect_and
875 my($self,@constraints)=@_;
876 my ($tags, $tags_vals, $parent)=$self->constraints_tag_list(@constraints);
878 my @tags_vals=@$tags_vals;;
886 $sql="\tSELECT fxt" . scalar(@tags) . ".files_id FROM files_x_tags fxt1\n";
890 $sql .= ("\tINNER JOIN files_x_tags fxt$cnt ON fxt" .
891 ($cnt-1) . ".files_id=fxt${cnt}.files_id\n");
893 push(@andclauses, "\t\tfxt${cnt}.tags_id = $tag");
894 print "AND: @andclauses\n";
899 $sql .= "\tWHERE\n\t\t";
900 $sql .= join(" AND\n\t\t", @andclauses) . "\n";
902 $sql .= "\tGROUP BY fxt". scalar(@tags).".files_id\n";
906 sub tags_subselect_or
908 my($self,@constraints)=@_;
909 my ($tags, $tags_vals, $parent)=$self->constraints_tag_list(@constraints);
911 my @tags_vals=@$tags_vals;;
913 my $sql=("\tSELECT files_x_tags.files_id FROM tags t1\n" .
914 "\tINNER JOIN files_x_tags ON t1.id=files_x_tags.tags_id\n");
920 push(@andclauses, "( t1.parents_id=" . (defined($parent) ? $parent : "''") . " )");
921 push(@andclauses, "( t1.id IN ( " . join(', ', @tags) ." ) )");
923 for my $pair (@tags_vals)
925 my($tag, $val)=@$pair;
926 push(@orclauses, "( t1.parents_id=$tag AND t1.id=$val )");
928 # push(@andclauses, "( t1.parents_id=" . (defined($parent) ? $parent : "''") . " )");
931 push(@andclauses, join("\n\t\tOR ", @orclauses));
935 $sql .= "\tWHERE\n\t\t";
936 $sql .= join("\n\t\tAND ", @andclauses) . "\n";
938 $sql .= "\tGROUP BY files_x_tags.files_id\n";
942 sub constraints_tag_list
944 my($self, @constraints)=@_;
948 for my $constraint (@constraints)
950 # print ref($constraint), ": ", $constraint->{name}, "\n";
951 if(ref($constraint) eq "ID3FS::PathElement::Tag")
953 if(defined($lasttag))
956 push(@tags_vals, [$lasttag, $constraint->{id}]) if defined($constraint->{id});
959 elsif($self->tag_has_values($constraint->{id}))
961 # print "HASVALUES\n";
962 $lasttag=$constraint->{id} if defined($constraint->{id});
966 # print "NOVALUES\n";
967 push(@tags, $constraint->{id}) if(defined($constraint->{id}));
971 unless($self->{db}->{postgres})
973 @tags=map{ "\"$_\""; } @tags;
974 @tags_vals=map( { [ map({ "\"$_\""; } @$_ ) ] } @tags_vals);
975 $lasttag="\"$lasttag\"" if defined($lasttag);
977 return(\@tags, \@tags_vals, $lasttag);
984 my $sql=("SELECT tags.name FROM tags\n" .
985 "WHERE tags.parents_id=''\n" .
986 "GROUP BY tags.name\n");
987 my @names=$self->{db}->cmd_firstcol($sql);
993 # FIXME: only shows one level of tag depth
995 my $sql=("SELECT p.name, t.name FROM tags t\n" .
996 "INNER JOIN tags p ON t.parents_id=p.id\n" .
997 "GROUP BY p.name, t.name\n");
998 # print "SQL: $sql\n";
999 my $result=$self->{db}->cmd_rows($sql);
1001 for my $pair (@$result)
1003 push(@{$tags->{$pair->[0]}}, $pair->[1]);
1011 my($self, @dirs)=@_;
1012 my $base=$self->{path};
1014 # depth 4 to allow for tag/tagval/AND/NOT
1018 # print "FILTER (",$self->state(), "): $base / $dir\n";
1019 if($self->empty("$base/$dir", $maxdepth))
1021 # print "empty: $base / $dir\n";
1025 # print "accepting: $base / $dir\n";
1026 push(@outdirs, $dir);
1034 my($self, $dir, $maxdepth)=@_;
1035 return 1 unless($maxdepth);
1036 # print "testing($maxdepth): $dir\n";
1037 my $path=ID3FS::Path->new($self->{db}, $dir);
1038 # print "PATH INVALID\n" unless($path->isvalid());
1039 return 1 unless($path->isvalid());
1040 my($subdirs,$subfiles)=$path->dirents();
1041 # print "SUBDENTS: ", join(", ", @$subdirs, @$subfiles), "\n";
1042 # print("SUBFILES: ", join(', ', @$subfiles), "\n") if(@$subfiles);
1043 return 0 if(@$subfiles);
1044 for my $subdir (@$subdirs)
1046 # print "SUBSUB $dir/$subdir\n";
1047 if(1) #$self->dir_is_special($subdir))
1049 if($self->empty("$dir/$subdir", ($maxdepth-1)))
1051 # print "EMPTY: $dir / $subdir\n";
1055 # print "NONEMPTY: $dir / $subdir\n";
1063 # return 0 if($self->nonempty("$dir/$subdir", ($maxdepth-1)));
1068 sub tagname_has_values
1070 my($self, $name)=@_;
1071 my $id=$self->{db}->lookup_id("tags", $name);
1072 return 0 unless($id);
1073 return $self->{db}->tag_has_values($id);
1080 if((grep { $_ eq $dir; }
1081 qw(AND OR NOT), $PATH_ALLTRACKS, $PATH_NOARTIST, $PATH_NOALBUM) ||
1082 ($self->tagname_has_values($dir)))