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,
17 our %priorities=( "OR" => 0, "AND" => 1, "NOT" => 2 );
22 my $class=ref($proto) || $proto;
30 # print "STATE: ", $self->state(), "\n";
37 if(($self->state() == $STATE_FILE) ||
38 ($self->state() == $STATE_INVALID))
48 return 1 if($self->state() == $STATE_FILE);
55 return($self->state() != $STATE_INVALID);
60 my($self, $mountpoint)=@_;
61 if($self->state() == $STATE_FILE)
63 return $self->filename($mountpoint, $self);
65 return "ERROR"; #should never happen?
72 my $state=$self->state();
73 # print "DIRENTS: STATE: $state\n";
74 # print "DIRENTS: FILE: $self->{path}\n";
75 if($state==$STATE_TAG || $state==$STATE_TAGVAL)
77 my $tag=$self->tail();
78 if($state==$STATE_TAG &&
80 ref($tag) eq "ID3FS::PathElement::Tag" &&
81 $self->{db}->tag_has_values($tag->{id}))
87 @dents=(qw(AND OR TRACKS NOARTIST),
91 elsif($state==$STATE_BOOLEAN)
93 my $parent=$self->tail();
94 unless(defined($parent) &&
95 ref($parent) eq "ID3FS::PathElement::Boolean" &&
96 $parent->{name} eq "NOT")
100 push(@dents, $self->tags());
102 elsif($state==$STATE_ROOT)
104 @dents=(qw(ALL NOT), $self->tags());
106 elsif($state==$STATE_ALBUMS)
108 @dents=(qw(TRACKS NOALBUM),$self->albums());
110 elsif($state==$STATE_TRACKLIST)
112 @dents=$self->tracks();
116 print "DIRENTS: UNHANDLED STATE: $state\n";
124 @{$self->{components}}=split(/\//, $self->{path});
125 shift @{$self->{components}}; # drop empty field before leading /
126 # print "PATH: $self->{path}\n";
127 $self->state($STATE_ROOT);
128 return if($self->{path} eq "/");
129 my @parts=@{$self->{components}};
131 $self->{elements}=[];
132 while(my $name=shift @parts)
134 # print "NAME: $name\n";
135 my $state=$self->state();
136 if($state==$STATE_INVALID)
138 # print "SM: INVALID: $name\n";
141 elsif($state==$STATE_ROOT)
143 # print "SM: ROOT: $name\n";
146 $self->state($STATE_TAG);
148 elsif($name eq "NOT")
150 push(@{$self->{elements}}, ID3FS::PathElement::Boolean->new($self->{db}, $name));
151 $self->state($STATE_BOOLEAN);
155 $tag=ID3FS::PathElement::Tag->new($self->{db}, $name);
158 push(@{$self->{elements}}, $tag);
159 $self->state($STATE_TAG);
163 $self->state($STATE_INVALID);
167 elsif($state==$STATE_TAG || $state==$STATE_TAGVAL)
169 # print "SM: TAG/TAGVAL($state): $name\n";
170 my $tag=$self->tail();
171 if($state==$STATE_TAG &&
173 ref($tag) eq "ID3FS::PathElement::Tag" &&
174 $self->{db}->tag_has_values($tag->{id}))
176 # print "Parsing: parent: $tag->{id}\n";
177 my $tagval=ID3FS::PathElement::Tag->new($self->{db}, $name, $tag->{id});
180 $self->state($STATE_TAGVAL);
182 push(@{$self->{elements}}, $tagval);
186 $self->state($STATE_INVALID);
189 elsif($name eq "TRACKS")
191 $self->state($STATE_TRACKLIST);
193 elsif($name eq "NOARTIST")
195 $self->state($STATE_TRACKLIST);
197 elsif($name eq "AND")
199 $self->state($STATE_BOOLEAN);
200 push(@{$self->{elements}}, ID3FS::PathElement::Boolean->new($self->{db}, $name));
204 $self->state($STATE_BOOLEAN);
205 push(@{$self->{elements}}, ID3FS::PathElement::Boolean->new($self->{db}, $name));
209 my $artist=ID3FS::PathElement::Artist->new($self->{db}, $name);
212 push(@{$self->{elements}}, $artist);
213 $self->state($STATE_ALBUMS);
217 $self->state($STATE_INVALID);
221 elsif($state==$STATE_BOOLEAN)
223 # print "SM: BOOLEAN: $name\n";
224 my $parent=$self->tail();
226 if(defined($parent) &&
227 ref($parent) eq "ID3FS::PathElement::Boolean" &&
228 $parent->{name} eq "NOT")
232 if($allownot && $name eq "NOT")
234 $self->state($STATE_BOOLEAN);
235 push(@{$self->{elements}}, ID3FS::PathElement::Boolean->new($self->{db}, $name));
239 my $tag=ID3FS::PathElement::Tag->new($self->{db}, $name);
242 push(@{$self->{elements}}, $tag);
243 $self->state($STATE_TAG);
247 $self->state($STATE_INVALID);
251 elsif($state==$STATE_ALBUMS)
253 # print "SM: ALBUM: $name\n";
254 if($name eq "TRACKS")
256 $self->state($STATE_TRACKLIST);
258 elsif($name eq "NOALBUM")
260 $self->state($STATE_TRACKLIST);
264 my $album=ID3FS::PathElement::Album->new($self->{db}, $name);
267 push(@{$self->{elements}}, $album);
268 $self->state($STATE_TRACKLIST);
272 $self->state($STATE_INVALID);
276 elsif($state==$STATE_TRACKLIST)
278 # print "SM: TRACKLIST: $name\n";
279 my $track=ID3FS::PathElement::File->new($self->{db}, $name);
282 push(@{$self->{elements}}, $track);
283 $self->state($STATE_FILE);
287 $self->state($STATE_INVALID);
290 elsif($state==$STATE_FILE)
292 # print "SM: FILE: $name\n";
293 # Can't have anything after a filename
294 $self->state($STATE_INVALID);
298 print "SM: ERROR: UNKNOWN STATE: $self->{state}\n";
299 $self->state($STATE_INVALID);
302 # remove trailing boolean
303 my @elements=@{$self->{elements}};
304 while(@elements && ref($elements[$#elements]) eq "ID3FS::PathElement::Boolean")
308 # sort elements by precedence
309 @elements=$self->sort_elements(@elements);
310 $self->{tagtree}=$self->elements_to_tree(\@elements);
313 ($self->{sqlconditions},
314 $self->{andsneeded}) = $self->{tagtree}->to_sql();
315 # print "TREE: ", $self->{tagtree}->print(), "\n";
316 # print("SQL CONDITION(", $self->{andsneeded}, "): ",
317 # $self->{sqlconditions}, "\n");
319 # print Dumper $self->{tagtree};
325 my($self, $newstate)=@_;
326 $self->{state}=$newstate if(defined($newstate));
327 return $self->{state};
332 my($self, $elements)=@_;
333 return undef unless(@$elements);
334 my ($left, $right, $op)=(undef, undef, undef);
335 my $thing=pop @$elements;
336 if(ref($thing) eq "ID3FS::PathElement::Boolean")
339 $right=$self->elements_to_tree($elements);
340 if($op->{name} ne "NOT")
342 $left=$self->elements_to_tree($elements);
344 return ID3FS::Path::Node->new($left, $op, $right);
348 return ID3FS::Path::Node->new($thing);
352 # Dijkstra's shunting-yard algorithm
355 my ($self, @input)=@_;
358 # print "INPUT: ", join(', ', map { $_->{name}; } @input), "\n";
359 while(my $thing = shift @input)
361 if(ref($thing) eq "ID3FS::PathElement::Tag")
363 # Handle tag values by dropping parent
364 if(@input && ref($input[0]) eq "ID3FS::PathElement::Tag")
368 push(@output, $thing);
370 elsif(ref($thing) eq "ID3FS::PathElement::Boolean")
374 ($priorities{$thing->{name}} <= $priorities{$opstack[$#opstack]->{name}}))
376 push(@output, pop(@opstack));
378 push(@opstack, $thing);
383 push(@output, pop(@opstack));
385 # print "STACK: ", join(', ', map { $_->{name}; } @output), "\n";
392 print "TAGTREE UNDEF\n" unless(defined($self->{tagtree}));
393 return undef unless(defined($self->{tagtree}));
394 return($self->{tagtree}->used_tags());
400 my $tail=$self->tail();
401 if($tail && ref($tail) eq "ID3FS::PathElement::Tag")
403 return($self->{db}->tag_has_values($tail->{id}));
410 my $tail=$self->tail();
411 if($tail && ref($tail) eq "ID3FS::PathElement::Tag")
418 sub trailing_tag_parent
421 my $tail=$self->tail();
422 if($tail && ref($tail) eq "ID3FS::PathElement::Tag")
424 return($tail->{parents_id});
432 return($self->{elements}->[$#{$self->{elements}}]);
435 # the one before last
439 return($self->{elements}->[($#{$self->{elements}}) - 1]);
442 ######################################################################
447 if(!@{$self->{elements}}) # /
449 my $sql="SELECT DISTINCT name FROM tags WHERE parents_id='';";
450 return($self->{db}->cmd_firstcol($sql));
452 my $hasvals=$self->tag_has_values();
453 my $parent=$self->trailing_tag_parent();
454 # print "THASVALS: $hasvals\n";
455 # print "TPARENT: ", (defined($parent)? $parent : "NO"), "\n";
457 my $sql=("SELECT tags.name FROM (\n" .
458 $self->tags_subselect() .
460 "INNER JOIN files_x_tags ON subselect.files_id=files_x_tags.files_id\n" .
461 "INNER JOIN tags ON files_x_tags.tags_id=tags.id\n");
462 my (@allused)=$self->used_tags();
463 my @used=grep { ref($_) ne "ARRAY"; } @allused;
464 my @used_with_vals=grep { ref($_) eq "ARRAY"; } @allused;
465 # print "tags(): USED: ", join(", ", @used), "\n";
466 # print "tags(): USED_WITH_VALS: ", join(", ", map { "[".$_->[0]. ", ".$_->[1]."]";} @used_with_vals), "\n";
469 my $id=$self->trailing_tag_id();
472 # print "HAS_VALUES\n";
473 my @values=map { "'".$_->[1]."'"; } grep { $_->[0] == $id; } @used_with_vals;
474 my $clause="(tags.parents_id='$id'";
477 $clause .= " AND tags.id NOT IN (" . join(', ', @values) . ")";
480 push(@andclauses, $clause);
484 # print "HASNT VALUES\n";;
487 push(@andclauses, "(NOT (tags.parents_id='' AND tags.id IN (" . join(', ', @used) . ")))");
489 for my $pair (@used_with_vals)
491 push(@andclauses, "(NOT (tags.parents_id='" . $pair->[0] . "' AND tags.id='" . $pair->[1] . "'))");
495 my $parentclause= "(tags.parents_id='";
498 $parentclause .= $id;
502 $parentclause .= $parent;
504 $parentclause .= "')";
505 push(@andclauses, $parentclause);
509 push(@andclauses, '( ' . join(' OR ', @orclauses) . ' )');
513 $sql .= "WHERE " . join(' AND ', @andclauses) . "\n";
515 $sql .= "GROUP BY tags.name;";
517 my @tagnames=$self->{db}->cmd_firstcol($sql);
518 print "SUBNAMES: ", join(', ', @tagnames), "\n";
524 my($self, $tagid)=@_;
525 my $sql=("SELECT DISTINCT name FROM tags\n" .
526 "WHERE parents_id=?");
527 my @tags=$self->{db}->cmd_firstcol($sql, $tagid);
528 @tags=map { length($_) ? $_ : "NOVALUE"; } @tags;
535 if(!@{$self->{elements}}) # /ALL
537 my $sql="SELECT DISTINCT name FROM artists;";
538 return($self->{db}->cmd_firstcol($sql));
541 my $sql=("SELECT artists.name FROM (\n" .
542 $self->tags_subselect() .
544 "INNER JOIN files ON subselect.files_id=files.id\n" .
545 "INNER JOIN artists ON files.artists_id=artists.id\n" .
546 "GROUP BY artists.name;");
548 my @tagnames=$self->{db}->cmd_firstcol($sql);
549 print "ARTISTS: ", join(', ', @tagnames), "\n";
557 my $tail=$self->tail();
558 # FIXME: rework PathElements
559 if(ref($tail) eq "ID3FS::PathElement::Artist")
561 return $self->artist_albums($tail->{id});
563 my $sql=("SELECT albums.name\n" .
565 $self->tags_subselect() .
566 "\t) AS subselect\n" .
567 "INNER JOIN files ON subselect.files_id=files.id\n" .
568 "INNER JOIN albums ON files.albums_id=albums.id\n" .
569 "GROUP BY albums.name;");
570 print "SQL(ALBUMS): \n$sql\n";
571 my @names=$self->{db}->cmd_firstcol($sql);
572 print "ALBUMS: ", join(', ', @names), "\n";
578 my($self, $artist_id)=@_;
579 my $sql=("SELECT albums.name FROM (\n" .
580 $self->tags_subselect() .
581 "\t) AS subselect\n" .
582 "INNER JOIN files ON subselect.files_id=files.id\n" .
583 "INNER JOIN albums ON albums.id=files.albums_id\n\t" .
584 "INNER JOIN artists ON artists.id=files.artists_id\n\t" .
585 "WHERE artists.id=? and albums.name <> ''\n\t" .
586 "GROUP BY albums.name\n");
587 print "ARTIST_ALBUMS SQL: $sql\n";
588 my @albums=$self->{db}->cmd_firstcol($sql, $artist_id);
589 print "ALBUMS: ", join(', ', @albums), "\n";
595 my($self, $artist_id)=@_;
596 my $sql=("SELECT files.name FROM (\n" .
597 $self->tags_subselect() .
598 "\t) AS subselect\n" .
599 "INNER JOIN files ON subselect.files_id=files.id\n" .
600 "INNER JOIN artists ON artists.id=files.artists_id\n\t" .
601 "INNER JOIN albums ON albums.id=files.albums_id\n\t" .
602 "WHERE artists.id=? AND albums.name=''\n\t" .
603 "GROUP BY files.name\n");
604 print "ARTIST_TRACKS SQL: $sql\n";
605 my @names=$self->{db}->cmd_firstcol($sql, $artist_id);
606 print "ARTISTTRACKS: ", join(', ', @names), "\n";
612 my($self, $artist_id, $album_id)=@_;
613 my $sql=("SELECT files.name FROM files\n\t" .
614 "INNER JOIN albums ON albums.id=files.albums_id\n\t" .
615 "INNER JOIN artists ON artists.id=files.artists_id\n\t" .
616 "WHERE artists.id=? AND albums.id=?\n\t" .
617 "GROUP BY files.name\n");
618 print "ALBUM_TRACKS SQL($artist_id, $album_id): $sql\n";
619 my @names=$self->{db}->cmd_firstcol($sql, $artist_id, $album_id);
620 print "TRACKS: ", join(', ', @names), "\n";
627 # FIXME: rework PathElements
628 my $tail=$self->tail();
629 if(ref($tail) eq "ID3FS::PathElement::Artist")
631 return $self->artist_tracks($tail->{id});
633 elsif(ref($tail) eq "ID3FS::PathElement::Album")
636 my $artist=$self->tail_parent();
637 if(defined($artist) && (ref($artist) eq "ID3FS::PathElement::Artist"))
639 # should always happen
640 $artist_id=$artist->{id};
642 return $self->album_tracks($artist_id, $tail->{id});
645 my $sql=("SELECT files.name\n" .
647 $self->tags_subselect() .
648 "\t) AS subselect\n" .
649 "INNER JOIN files ON files.id=subselect.files_id\n" .
650 "GROUP BY files.name;");
652 my @names=$self->{db}->cmd_firstcol($sql);
653 print "TRACKS: ", join(', ', @names), "\n";
659 my($self, $mountpoint)=@_;
660 my $tail=$self->tail();
661 if(ref($tail) eq "ID3FS::PathElement::File")
664 my $sql=("SELECT paths.name, files.name FROM files\n" .
665 "INNER JOIN paths ON files.paths_id=paths.id\n" .
666 "WHERE files.id=?\n" .
667 "GROUP BY paths.name, files.name");
668 print "FILENAME SQL: $sql\n";
669 my ($path, $name)=$self->{db}->cmd_onerow($sql, $id);
670 my $id3fs_path=join('/', map { $_->{name}; } @{$self->{elements}});
671 return($self->{db}->relativise($path, $name, $mountpoint, $id3fs_path));
673 die("DB::filename: unhandled case\n"); #FIXME
679 my $tree=$self->{tagtree};
680 my $hasvals=$self->tag_has_values();
681 my $parent=$self->trailing_tag_parent();
683 # print "ELEMENTS: ", join('/', map { $_->{name}; } @{$self->{elements}}), "\n";
684 # print "TREE: ", $tree->print(), "\n";
688 $tag=$self->trailing_tag_id();
689 # print "Trailing id: $tag\n";
691 my ($sqlclause, $joinsneeded)=(undef, 1);
692 ($sqlclause, $joinsneeded) = $tree->to_sql($tag) if($tree);
693 # print "SQL($joinsneeded): $sqlclause\n";
694 my $sql="\tSELECT fxt1.files_id FROM tags t1";
697 # $joinsneeded++ if($tag);
698 for(my $i=1; $i <= $joinsneeded; $i++)
700 my $inner=("\tINNER JOIN files_x_tags fxt$i ON " .
701 "t${i}.id=fxt${i}.tags_id");
704 push(@crosses, "CROSS JOIN tags t$i");
705 $inner .= " AND fxt1.files_id=fxt${i}.files_id";
707 push(@inners, $inner);
709 $sql .= ("\n\t" . join(" ", @crosses)) if(@crosses);
710 $sql .= ("\n" . join("\n", @inners)) if(@inners);
711 $sql .= "\n\tWHERE $sqlclause" if($sqlclause);
714 # $sql .= " AND t${joinsneeded}.parents_id='$tag'";
716 $sql .= "\n\tGROUP BY fxt1.files_id\n";
720 sub tags_subselect_and_not
722 my($self,@constraints)=@_;
723 my ($tags, $tags_vals, $parent)=$self->constraints_tag_list(@constraints);
725 my @tags_vals=@$tags_vals;;
733 $sql="\tSELECT fxt" . scalar(@tags) . ".files_id FROM files_x_tags fxt1\n";
734 push(@andclauses, "\t\tfxt${cnt}.tags_id=$tag");
738 $sql .= ("\tLEFT JOIN files_x_tags fxt$cnt ON fxt" .
739 ($cnt-1) . ".files_id=fxt${cnt}.files_id\n");
740 push(@andclauses, "\t\tfxt${cnt}.tags_id IS NULL");
742 print "AND: @andclauses\n";
747 $sql .= "\tWHERE\n\t\t";
748 $sql .= join(" AND\n\t\t", @andclauses) . "\n";
750 $sql .= "\tGROUP BY fxt". scalar(@tags).".files_id\n";
755 sub tags_subselect_and
757 my($self,@constraints)=@_;
758 my ($tags, $tags_vals, $parent)=$self->constraints_tag_list(@constraints);
760 my @tags_vals=@$tags_vals;;
768 $sql="\tSELECT fxt" . scalar(@tags) . ".files_id FROM files_x_tags fxt1\n";
772 $sql .= ("\tINNER JOIN files_x_tags fxt$cnt ON fxt" .
773 ($cnt-1) . ".files_id=fxt${cnt}.files_id\n");
775 push(@andclauses, "\t\tfxt${cnt}.tags_id = $tag");
776 print "AND: @andclauses\n";
781 $sql .= "\tWHERE\n\t\t";
782 $sql .= join(" AND\n\t\t", @andclauses) . "\n";
784 $sql .= "\tGROUP BY fxt". scalar(@tags).".files_id\n";
788 sub tags_subselect_or
790 my($self,@constraints)=@_;
791 my ($tags, $tags_vals, $parent)=$self->constraints_tag_list(@constraints);
793 my @tags_vals=@$tags_vals;;
795 my $sql=("\tSELECT files_x_tags.files_id FROM tags t1\n" .
796 "\tINNER JOIN files_x_tags ON t1.id=files_x_tags.tags_id\n");
802 push(@andclauses, "( t1.parents_id=" . (defined($parent) ? $parent : "''") . " )");
803 push(@andclauses, "( t1.id IN ( " . join(', ', @tags) ." ) )");
805 for my $pair (@tags_vals)
807 my($tag, $val)=@$pair;
808 push(@orclauses, "( t1.parents_id=$tag AND t1.id=$val )");
810 # push(@andclauses, "( t1.parents_id=" . (defined($parent) ? $parent : "''") . " )");
813 push(@andclauses, join("\n\t\tOR ", @orclauses));
817 $sql .= "\tWHERE\n\t\t";
818 $sql .= join("\n\t\tAND ", @andclauses) . "\n";
820 $sql .= "\tGROUP BY files_x_tags.files_id\n";
824 sub constraints_tag_list
826 my($self, @constraints)=@_;
830 for my $constraint (@constraints)
832 # print ref($constraint), ": ", $constraint->{name}, "\n";
833 if(ref($constraint) eq "ID3FS::PathElement::Tag")
835 if(defined($lasttag))
838 push(@tags_vals, [$lasttag, $constraint->{id}]) if defined($constraint->{id});
841 elsif($self->tag_has_values($constraint->{id}))
843 # print "HASVALUES\n";
844 $lasttag=$constraint->{id} if defined($constraint->{id});
848 # print "NOVALUES\n";
849 push(@tags, $constraint->{id}) if(defined($constraint->{id}));
853 unless($self->{db}->{postgres})
855 @tags=map{ "\"$_\""; } @tags;
856 @tags_vals=map( { [ map({ "\"$_\""; } @$_ ) ] } @tags_vals);
857 $lasttag="\"$lasttag\"" if defined($lasttag);
859 return(\@tags, \@tags_vals, $lasttag);
866 my $sql=("SELECT tags.name FROM tags\n" .
867 "WHERE tags.parents_id=''\n" .
868 "GROUP BY tags.name\n");
869 my @names=$self->{db}->cmd_firstcol($sql);
875 # FIXME: only shows one level of tag depth
877 my $sql=("SELECT p.name, t.name FROM tags t\n" .
878 "INNER JOIN tags p ON t.parents_id=p.id\n" .
879 "GROUP BY p.name, t.name\n");
881 my $result=$self->{db}->cmd_rows($sql);
883 for my $pair (@$result)
885 push(@{$tags->{$pair->[0]}}, $pair->[1]);
892 my($self, $table, $name)=@_;
893 my($id)=$self->{db}->cmd_onerow("SELECT id FROM $table where name=?", $name);