our ($STATE_INVALID, $STATE_ROOT, $STATE_TAG, $STATE_TAGVAL,
$STATE_BOOLEAN, $STATE_ALBUMS, $STATE_TRACKLIST,
- $STATE_FILE)=(0..7);
+ $STATE_FILE, $STATE_ALL)=(0..8);
our %priorities=( "OR" => 0, "AND" => 1, "NOT" => 2 );
+our $PATH_ALLTRACKS="TRACKS";
+our $PATH_NOARTIST="NOARTIST";
+our $PATH_NOALBUM="NOALBUM";
+
sub new
{
my $proto=shift;
my $self={};
bless($self,$class);
+ $self->{elements}=[];
$self->{db}=shift;
$self->{path}=shift;
+ $self->{verbose}=shift;
+ $self->{path} =~ s/\/\//\//g; # drop doubled slashes
+
$self->parse();
# print "STATE: ", $self->state(), "\n";
return $self;
my($self, $mountpoint)=@_;
if($self->state() == $STATE_FILE)
{
- return $self->{db}->filename($mountpoint, @{$self->{elements}});
+ return $self->filename($mountpoint, $self);
}
return "ERROR"; #should never happen?
}
{
my($self)=@_;
my @dents=();
+ my @fents=();
my $state=$self->state();
# print "DIRENTS: STATE: $state\n";
# print "DIRENTS: FILE: $self->{path}\n";
- if($state==$STATE_TAG || $state==$STATE_TAGVAL)
+ if($state==$STATE_ALL)
+ {
+ @dents=($self->artists(), $PATH_ALLTRACKS, $PATH_NOARTIST);
+ }
+ elsif($state==$STATE_TAG || $state==$STATE_TAGVAL)
{
- my $tag=$self->{elements}->[$#{$self->{elements}}];
+ my $tag=$self->tail();
if($state==$STATE_TAG &&
defined($tag) &&
ref($tag) eq "ID3FS::PathElement::Tag" &&
$self->{db}->tag_has_values($tag->{id}))
{
- @dents=$self->{db}->tags(@{$self->{elements}});
+ @dents=$self->tags();
}
else
{
- @dents=(qw(AND OR TRACKS NOARTIST),
- $self->{db}->artists(@{$self->{elements}}));
+ @dents=($self->artists(), qw(AND OR), $PATH_ALLTRACKS, $PATH_NOARTIST);
}
}
elsif($state==$STATE_BOOLEAN)
{
- my $parent=$self->{elements}->[$#{$self->{elements}}];
+ @dents=$self->tags();
+ my $parent=$self->tail();
unless(defined($parent) &&
ref($parent) eq "ID3FS::PathElement::Boolean" &&
$parent->{name} eq "NOT")
{
push(@dents, "NOT");
}
- push(@dents, $self->{db}->tags(@{$self->{elements}}));
}
elsif($state==$STATE_ROOT)
{
- @dents=(qw(ALL NOT), $self->{db}->tags(@{$self->{elements}}));
+ @dents=($self->tags(), qw(ALL NOT));
}
elsif($state==$STATE_ALBUMS)
{
- @dents=(qw(TRACKS NOALBUM),$self->{db}->albums(@{$self->{elements}}));
+ @dents=($self->albums(), $PATH_ALLTRACKS, $PATH_NOALBUM);
}
elsif($state==$STATE_TRACKLIST)
{
- @dents=$self->{db}->tracks(@{$self->{elements}});
+ @fents=$self->tracks();
}
else
{
print "DIRENTS: UNHANDLED STATE: $state\n";
}
- return(@dents);
+ return(\@dents, \@fents);
}
sub parse
my @parts=@{$self->{components}};
my($tag, $tagval);
$self->{elements}=[];
- while(my $name=shift @parts)
+ $self->{bare_not}=0;
+ $self->{in_all}=0;
+ my $root_not=0;
+ my $tags_seen=0;
+ while(defined(my $name=shift @parts))
{
# print "NAME: $name\n";
my $state=$self->state();
# print "SM: ROOT: $name\n";
if($name eq "ALL")
{
- $self->state($STATE_TAG);
+ $self->{in_all}=1;
+ $self->state($STATE_ALL);
}
elsif($name eq "NOT")
{
+ $root_not=1;
push(@{$self->{elements}}, ID3FS::PathElement::Boolean->new($self->{db}, $name));
$self->state($STATE_BOOLEAN);
}
if($tag)
{
push(@{$self->{elements}}, $tag);
+ $tags_seen++;
$self->state($STATE_TAG);
}
else
elsif($state==$STATE_TAG || $state==$STATE_TAGVAL)
{
# print "SM: TAG/TAGVAL($state): $name\n";
- my $tag=$self->{elements}->[$#{$self->{elements}}];
+ my $tag=$self->tail();
if($state==$STATE_TAG &&
defined($tag) &&
ref($tag) eq "ID3FS::PathElement::Tag" &&
$self->{db}->tag_has_values($tag->{id}))
{
+# print "Parsing: parent: $tag->{id}\n";
my $tagval=ID3FS::PathElement::Tag->new($self->{db}, $name, $tag->{id});
if(defined($tagval))
{
$self->state($STATE_INVALID);
}
}
- elsif($name eq "TRACKS")
+ elsif($name eq $PATH_ALLTRACKS)
{
$self->state($STATE_TRACKLIST);
}
- elsif($name eq "NOARTIST")
+ elsif($name eq $PATH_NOARTIST)
{
$self->state($STATE_TRACKLIST);
}
elsif($state==$STATE_BOOLEAN)
{
# print "SM: BOOLEAN: $name\n";
- my $parent=$self->{elements}->[$#{$self->{elements}}];
+ my $parent=$self->tail();
my $allownot=1;
if(defined($parent) &&
ref($parent) eq "ID3FS::PathElement::Boolean" &&
if($tag)
{
push(@{$self->{elements}}, $tag);
+ $tags_seen++;
$self->state($STATE_TAG);
}
else
elsif($state==$STATE_ALBUMS)
{
# print "SM: ALBUM: $name\n";
- if($name eq "TRACKS")
+ if($name eq $PATH_ALLTRACKS)
{
$self->state($STATE_TRACKLIST);
}
- elsif($name eq "NOALBUM")
+ elsif($name eq $PATH_NOALBUM)
{
$self->state($STATE_TRACKLIST);
}
# Can't have anything after a filename
$self->state($STATE_INVALID);
}
+ elsif($state==$STATE_ALL)
+ {
+ if($name eq $PATH_ALLTRACKS)
+ {
+ $self->state($STATE_TRACKLIST);
+ }
+ elsif($name eq $PATH_NOARTIST)
+ {
+ # FIXME
+ $self->state($STATE_TRACKLIST);
+ }
+ else
+ {
+ my $artist=ID3FS::PathElement::Artist->new($self->{db}, $name);
+ if($artist)
+ {
+ push(@{$self->{elements}}, $artist);
+ $self->state($STATE_ALBUMS);
+ }
+ else
+ {
+ $self->state($STATE_INVALID);
+ }
+ }
+ }
else
{
print "SM: ERROR: UNKNOWN STATE: $self->{state}\n";
$self->state($STATE_INVALID);
}
}
+
+ if($root_not && ($tags_seen < 2))
+ {
+ $self->{bare_not}=1;
+ }
+
+ # remove trailing boolean
+ my @elements=@{$self->{elements}};
+ while(@elements && ref($elements[$#elements]) eq "ID3FS::PathElement::Boolean")
+ {
+ pop @elements;
+ }
# sort elements by precedence
- @{$self->{elements}}=$self->sort_elements(@{$self->{elements}});
- my $thing=$self->elements_to_tree([ @{$self->{elements}} ]);
- $self->{tagtree}=$self->elements_to_tree([ @{$self->{elements}} ]);
+ @elements=$self->sort_elements(@elements);
+ $self->{tagtree}=$self->elements_to_tree(\@elements);
if($self->{tagtree})
{
($self->{sqlconditions},
- $self->{andsneeded}) = $self->{tagtree}->to_sql();
- print("SQL CONDITION(", $self->{andsneeded}, "): ",
- $self->{sqlconditions}, "\n");
+ $self->{joins}) = $self->{tagtree}->to_sql();
+# print "TREE: ", $self->{tagtree}->print(), "\n";
+# print("SQL CONDITION(", scalar(@{$self->{joins}}), "): ",
+# $self->{sqlconditions}, "\n");
+# use Data::Dumper;
+# print Dumper $self->{tagtree};
}
}
{
if(ref($thing) eq "ID3FS::PathElement::Tag")
{
-# print "Pushing $thing->{name} to output\n";
+ # Handle tag values by dropping parent
+ if(@input && ref($input[0]) eq "ID3FS::PathElement::Tag")
+ {
+ $thing=shift @input;
+ }
push(@output, $thing);
-# print "OPSTACK: ", join(', ', map { $_->{name}; } @opstack), "\n";
-# print "OUTPUT: ", join(', ', map { $_->{name}; } @output), "\n";
}
elsif(ref($thing) eq "ID3FS::PathElement::Boolean")
{
-# print "BOOL: $thing->{name}\n";
# bool
-# print "thing: $thing->{name}: $priorities{$thing->{name}} ";
- if(@opstack)
- {
-# print("topop: ", $opstack[$#opstack]->{name},
-# ": ", $priorities{$opstack[$#opstack]->{name}}, "\n");
- }
while(@opstack &&
($priorities{$thing->{name}} <= $priorities{$opstack[$#opstack]->{name}}))
{
-# print "Pushing ", $opstack[$#opstack]->{name}, " from opstack to output\n";
push(@output, pop(@opstack));
-# print "OPSTACK: ", join(', ', map { $_->{name}; } @opstack), "\n";
-# print "OUTPUT: ", join(', ', map { $_->{name}; } @output), "\n";
}
-# print "Pushing $thing->{name} to opstack\n";
push(@opstack, $thing);
-# print "OPSTACK: ", join(', ', map { $_->{name}; } @opstack), "\n";
-# print "OUTPUT: ", join(', ', map { $_->{name}; } @output), "\n";
}
}
while(@opstack)
return @output;
}
+sub used_tags
+{
+ my($self)=@_;
+ return() unless(defined($self->{tagtree}));
+ return($self->{tagtree}->used_tags());
+}
+
+sub expecting_values
+{
+ my($self)=@_;
+ my $tail=$self->tail();
+ if($tail && ref($tail) eq "ID3FS::PathElement::Tag")
+ {
+ return($self->{db}->tag_has_values($tail->{id}));
+ }
+}
+
+sub trailing_tag_id
+{
+ my($self)=@_;
+ my $tail=$self->tail();
+ if($tail && ref($tail) eq "ID3FS::PathElement::Tag")
+ {
+ return($tail->{id});
+ }
+ return undef;
+}
+
+sub trailing_tag_parent
+{
+ my($self)=@_;
+ my $tail=$self->tail();
+ if($tail && ref($tail) eq "ID3FS::PathElement::Tag")
+ {
+ return($tail->{parents_id});
+ }
+ return undef;
+}
+
+sub tail
+{
+ my($self)=@_;
+ return($self->{elements}->[$#{$self->{elements}}]);
+}
+
+# the one before last
+sub tail_parent
+{
+ my($self)=@_;
+ return($self->{elements}->[($#{$self->{elements}}) - 1]);
+}
+
+######################################################################
+
+sub tags
+{
+ my($self)=@_;
+ if(!$self->{tagtree}) # / or /NOT # FIXME: /ALL too?
+ {
+ my $sql="SELECT DISTINCT name FROM tags WHERE parents_id='';";
+ return($self->{db}->cmd_firstcol($sql));
+ }
+ my $hasvals=$self->expecting_values();
+ my $parent=$self->trailing_tag_parent();
+# print "THASVALS: $hasvals\n";
+# print "TPARENT: ", (defined($parent)? $parent : "NO"), "\n";
+ my @ids=();
+ my $sql=("SELECT tags.name FROM (\n" .
+ $self->tags_subselect() .
+ ") AS subselect\n" .
+ "INNER JOIN files_x_tags ON subselect.files_id=files_x_tags.files_id\n" .
+ "INNER JOIN tags ON files_x_tags.tags_id=tags.id\n");
+ my @allused=$self->used_tags();
+ my @used=grep { ref($_) ne "ARRAY"; } @allused;
+ my @used_with_vals=grep { ref($_) eq "ARRAY"; } @allused;
+# print "tags(): USED: ", join(", ", @used), "\n";
+# print "tags(): USED_WITH_VALS: ", join(", ", map { "[".$_->[0]. ", ".$_->[1]."]";} @used_with_vals), "\n";
+ my @orclauses=();
+ my @andclauses=();
+ my $id=$self->trailing_tag_id();
+ if($hasvals)
+ {
+# print "HAS_VALUES\n";
+ my @values=map { "'".$_->[1]."'"; } grep { $_->[0] == $id; } @used_with_vals;
+ my $clause="(tags.parents_id='$id'";
+ if(@values)
+ {
+ $clause .= " AND tags.id NOT IN (" . join(', ', @values) . ")";
+ }
+ $clause .= ")";
+ push(@andclauses, $clause);
+ }
+ else
+ {
+# print "HASNT VALUES\n";;
+ if(@used)
+ {
+ push(@andclauses, "(NOT (tags.parents_id='' AND tags.id IN (" . join(', ', @used) . ")))");
+ }
+ for my $pair (@used_with_vals)
+ {
+ push(@andclauses, "(NOT (tags.parents_id='" . $pair->[0] . "' AND tags.id='" . $pair->[1] . "'))");
+ }
+ }
+
+ my $parentclause= "(tags.parents_id='";
+ if($hasvals)
+ {
+ $parentclause .= $id;
+ }
+ elsif($parent)
+ {
+ $parentclause .= $parent;
+ }
+ $parentclause .= "')";
+ push(@andclauses, $parentclause);
+
+ if(@orclauses)
+ {
+ push(@andclauses, '( ' . join(' OR ', @orclauses) . ' )');
+ }
+ if(@andclauses)
+ {
+ $sql .= "WHERE " . join(' AND ', @andclauses) . "\n";
+ }
+ $sql .= "GROUP BY tags.name;";
+ print "SQL(TAGS): $sql\n" if($self->{verbose});
+ my @tagnames=$self->{db}->cmd_firstcol($sql);
+ print("SUBNAMES: ", join(', ', @tagnames), "\n") if($self->{verbose});
+ return(@tagnames);
+}
+
+sub artists
+{
+ my($self)=@_;
+ if(!@{$self->{elements}}) # /ALL
+ {
+ my $sql="SELECT DISTINCT name FROM artists WHERE name!='';";
+ return($self->{db}->cmd_firstcol($sql));
+ }
+ my @ids=();
+ my $sql=("SELECT artists.name FROM (\n" .
+ $self->tags_subselect() .
+ ") AS subselect\n" .
+ "INNER JOIN files ON subselect.files_id=files.id\n" .
+ "INNER JOIN artists ON files.artists_id=artists.id\n" .
+ "WHERE artists.name != ''\n" .
+ "GROUP BY artists.name;");
+ print "SQL(ARTISTS): $sql\n" if($self->{verbose});
+ my @tagnames=$self->{db}->cmd_firstcol($sql);
+ print("ARTISTS: ", join(', ', @tagnames), "\n") if($self->{verbose});
+ return(@tagnames);
+}
+
+sub albums
+{
+ my($self)=@_;
+ my @ids=();
+ my $tail=$self->tail();
+ # FIXME: rework PathElements
+ if(ref($tail) eq "ID3FS::PathElement::Artist")
+ {
+ return $self->artist_albums($tail->{id});
+ }
+ my $sql;
+ if($self->{in_all})
+ {
+ $sql="SELECT name FROM albums";
+ }
+ else
+ {
+ $sql=("SELECT albums.name\n" .
+ "\tFROM (\n" .
+ $self->tags_subselect() .
+ "\t) AS subselect\n" .
+ "INNER JOIN files ON subselect.files_id=files.id\n" .
+ "INNER JOIN albums ON files.albums_id=albums.id\n" .
+ "WHERE albums.name != ''\n" .
+ "GROUP BY albums.name;");
+ }
+ print "SQL(ALBUMS): \n$sql\n" if($self->{verbose});
+ my @names=$self->{db}->cmd_firstcol($sql);
+ print("ALBUMS: ", join(', ', @names), "\n") if($self->{verbose});
+ return(@names);
+}
+
+sub artist_albums
+{
+ my($self, $artist_id)=@_;
+ my $sql="SELECT albums.name FROM ";
+ if($self->{in_all})
+ {
+ $sql .= "files\n";
+ }
+ else
+ {
+ $sql .= ("(\n" .
+ $self->tags_subselect() .
+ ") AS subselect\n" .
+ "INNER JOIN files ON subselect.files_id=files.id\n");
+ }
+ $sql .= ("INNER JOIN albums ON albums.id=files.albums_id\n" .
+ "INNER JOIN artists ON artists.id=files.artists_id\n" .
+ "WHERE artists.id=? and albums.name <> ''\n" .
+ "GROUP BY albums.name\n");
+ print "ARTIST_ALBUMS SQL: $sql\n" if($self->{verbose});
+ my @albums=$self->{db}->cmd_firstcol($sql, $artist_id);
+ print("ALBUMS: ", join(', ', @albums), "\n") if($self->{verbose});
+ return(@albums);
+}
+
+sub artist_tracks
+{
+ my($self, $artist_id)=@_;
+ my $sql="SELECT files.name FROM ";
+ if($self->{in_all})
+ {
+ $sql .= "files\n";
+ }
+ else
+ {
+ $sql .= ("(\n" .
+ $self->tags_subselect() .
+ "\t) AS subselect\n" .
+ "INNER JOIN files ON subselect.files_id=files.id\n");
+ }
+ $sql .= ("INNER JOIN artists ON artists.id=files.artists_id\n" .
+ "INNER JOIN albums ON albums.id=files.albums_id\n" .
+ "WHERE artists.id=? AND albums.name=''\n" .
+ "GROUP BY files.name\n");
+ print "ARTIST_TRACKS SQL: $sql\n" if($self->{verbose});
+ my @names=$self->{db}->cmd_firstcol($sql, $artist_id);
+ print("ARTISTTRACKS: ", join(', ', @names), "\n") if($self->{verbose});
+ return(@names);
+}
+
+sub album_tracks
+{
+ my($self, $artist_id, $album_id)=@_;
+ my $sql=("SELECT files.name FROM files\n" .
+ "INNER JOIN albums ON albums.id=files.albums_id\n" .
+ "INNER JOIN artists ON artists.id=files.artists_id\n" .
+ "WHERE artists.id=? AND albums.id=?\n" .
+ "GROUP BY files.name\n");
+ print "ALBUM_TRACKS SQL($artist_id, $album_id): $sql\n" if($self->{verbose});
+ my @names=$self->{db}->cmd_firstcol($sql, $artist_id, $album_id);
+ print("TRACKS: ", join(', ', @names), "\n") if($self->{verbose});
+ return(@names);
+}
+
+sub tracks
+{
+ my($self)=@_;
+ # FIXME: rework PathElements
+ my $tail=$self->tail();
+ if(ref($tail) eq "ID3FS::PathElement::Artist")
+ {
+ return $self->artist_tracks($tail->{id});
+ }
+ elsif(ref($tail) eq "ID3FS::PathElement::Album")
+ {
+ my $artist_id=0;
+ my $artist=$self->tail_parent();
+ if(defined($artist) && (ref($artist) eq "ID3FS::PathElement::Artist"))
+ {
+ # should always happen
+ $artist_id=$artist->{id};
+ }
+ return $self->album_tracks($artist_id, $tail->{id});
+ }
+ my $sql="SELECT files.name FROM ";
+ if($self->{in_all})
+ {
+ $sql .= "files\n";
+ }
+ else
+ {
+ $sql .= ("(\n" .
+ $self->tags_subselect() .
+ ") AS subselect\n" .
+ "INNER JOIN files ON files.id=subselect.files_id\n");
+ }
+ $sql .= "INNER JOIN artists ON files.artists_id=artists.id\n";
+ if($self->{components}->[$#{$self->{components}}] eq $PATH_NOARTIST)
+ {
+ $sql .= "WHERE artists.name =''\n";
+ }
+ $sql .= "GROUP BY files.name;";
+ print "TRACKS SQL($self->{path}): $sql\n" if($self->{verbose});
+ my @names=$self->{db}->cmd_firstcol($sql);
+ print("TRACKS: ", join(', ', @names), "\n") if($self->{verbose});
+ return(@names);
+}
+
+sub filename
+{
+ my($self, $mountpoint)=@_;
+ my $tail=$self->tail();
+ if(ref($tail) eq "ID3FS::PathElement::File")
+ {
+ my $id=$tail->{id};
+ my $sql=("SELECT paths.name, files.name FROM files\n" .
+ "INNER JOIN paths ON files.paths_id=paths.id\n" .
+ "WHERE files.id=?\n" .
+ "GROUP BY paths.name, files.name");
+ print "FILENAME SQL: $sql\n" if($self->{verbose});
+ my ($path, $name)=$self->{db}->cmd_onerow($sql, $id);
+ my $id3fs_path=join('/', map { $_->{name}; } @{$self->{elements}});
+ return($self->{db}->relativise($path, $name, $mountpoint, $id3fs_path));
+ }
+ die("DB::filename: unhandled case\n"); #FIXME
+}
+
+sub tags_subselect
+{
+ my($self)=@_;
+ my $hasvals=$self->expecting_values();
+ # we need to specially handle a bare /NOT/tag with no other clauses,
+ # using a simple WHERE id !='tagid' instead of a LEFT JOIN
+ if($self->{bare_not})
+ {
+ return $self->bare_not_subselect();
+ }
+ if($self->{in_all})
+ {
+ return "\tSELECT id FROM files AS files_id\n";
+ }
+ my $tree=$self->{tagtree};
+ my $parent=$self->trailing_tag_parent();
+
+# print "ELEMENTS: ", join('/', map { $_->{name}; } @{$self->{elements}}), "\n";
+# print "TREE: ", $tree->print(), "\n";
+ my $tag=undef;
+ if($hasvals)
+ {
+ $tag=$self->trailing_tag_id();
+# print "Trailing id: $tag\n";
+ }
+ my ($sqlclause, @joins)=(undef, ());
+ ($sqlclause, @joins) = $tree->to_sql($hasvals) if($tree);
+# print "SQL(" . scalar(@joins) .": $sqlclause\n";
+ my $sql="\tSELECT fxt1.files_id FROM tags t1";
+ my @crosses=();
+ my @inners=();
+# $joinsneeded++ if($tag);
+ for(my $i=0; $i <= $#joins; $i++)
+ {
+ my $cnt=$i+1;
+ my $join=$joins[$i];
+ my $inner=("\t$join JOIN files_x_tags fxt$cnt ON " .
+ "t${cnt}.id=fxt${cnt}.tags_id");
+ if($i > 0)
+ {
+ push(@crosses, "CROSS JOIN tags t$cnt");
+ $inner .= " AND fxt1.files_id=fxt${cnt}.files_id";
+ }
+ push(@inners, $inner);
+ }
+ $sql .= ("\n\t" . join(" ", @crosses)) if(@crosses);
+ $sql .= ("\n" . join("\n", @inners)) if(@inners);
+ $sql .= "\n\tWHERE $sqlclause" if($sqlclause);
+# if($tag)
+# {
+# $sql .= " AND t${joinsneeded}.parents_id='$tag'";
+# }
+ $sql .= "\n\tGROUP BY fxt1.files_id\n";
+ return $sql;
+}
+
+sub bare_not_subselect
+{
+ my($self)=@_;
+ my @tags=grep { ref($_) eq "ID3FS::PathElement::Tag"; } @{$self->{elements}};
+ my $sql=("\tSELECT f1.id AS files_id FROM files f1 WHERE f1.id NOT IN (\n" .
+ "\t\tSELECT fxt1.files_id FROM tags t1\n" .
+ "\t\tINNER JOIN files_x_tags fxt1 ON t1.id=fxt1.tags_id\n" .
+ "\t\tWHERE ");
+ if(scalar(@tags) > 1)
+ {
+ $sql .= ("(t1.parents_id='" . $tags[0]->{id} . "' AND t1.id='" .
+ $tags[1]->{id} . "')");
+ }
+ else
+ {
+ $sql .= ("(t1.parents_id='' AND t1.id='" . $tags[0]->{id} . "')");
+ }
+ $sql .= "\n\t\tGROUP BY fxt1.files_id\n\t)\n";
+ return($sql);
+}
+
+sub constraints_tag_list
+{
+ my($self, @constraints)=@_;
+ my $lasttag=undef;
+ my @tags=();
+ my @tags_vals=();
+ for my $constraint (@constraints)
+ {
+# print ref($constraint), ": ", $constraint->{name}, "\n";
+ if(ref($constraint) eq "ID3FS::PathElement::Tag")
+ {
+ if(defined($lasttag))
+ {
+# print "TAGVAL\n";
+ push(@tags_vals, [$lasttag, $constraint->{id}]) if defined($constraint->{id});
+ $lasttag=undef;
+ }
+ elsif($self->tag_has_values($constraint->{id}))
+ {
+# print "HASVALUES\n";
+ $lasttag=$constraint->{id} if defined($constraint->{id});
+ }
+ else
+ {
+# print "NOVALUES\n";
+ push(@tags, $constraint->{id}) if(defined($constraint->{id}));
+ }
+ }
+ }
+ unless($self->{db}->{postgres})
+ {
+ @tags=map{ "\"$_\""; } @tags;
+ @tags_vals=map( { [ map({ "\"$_\""; } @$_ ) ] } @tags_vals);
+ $lasttag="\"$lasttag\"" if defined($lasttag);
+ }
+ return(\@tags, \@tags_vals, $lasttag);
+}
+
+sub filter
+{
+ my($self, @dirs)=@_;
+ my $base=$self->{path};
+ my @outdirs=();
+ # depth 4 to allow for tag/tagval/AND/NOT
+ my $maxdepth=4;
+ for my $dir (@dirs)
+ {
+# print "\nFILTER (",$self->state(), "): $base / $dir\n";
+ if($self->empty("$base/$dir", $maxdepth))
+ {
+# print "empty: $base / $dir\n";
+ }
+ else
+ {
+# print "non-empty, accepting: $base / $dir\n";
+ push(@outdirs, $dir);
+ }
+ }
+ return(@outdirs);
+}
+
+sub empty
+{
+ my($self, $dir, $maxdepth)=@_;
+ return 0 unless($maxdepth);
+# print "testing($maxdepth): $dir\n";
+ my $path=ID3FS::Path->new($self->{db}, $dir, $self->{verbose});
+# print "PATH INVALID\n" unless($path->isvalid());
+ return 1 unless($path->isvalid());
+ my($subdirs,$subfiles)=$path->dirents();
+# print "SUBDENTS: ", join(", ", @$subdirs, @$subfiles), "\n";
+# print("SUBFILES: ", join(', ', @$subfiles), "\n") if(@$subfiles);
+ return 0 if(@$subfiles);
+ for my $subdir (@$subdirs)
+ {
+# print "SUBSUB $dir/$subdir\n";
+ if(1) #$self->dir_is_special($subdir))
+ {
+ if($self->empty("$dir/$subdir", ($maxdepth-1)))
+ {
+# print "EMPTY: $dir / $subdir\n";
+ }
+ else
+ {
+# print "NONEMPTY: $dir / $subdir\n";
+ return 0;
+ }
+ }
+ else
+ {
+ return 0;
+ }
+# return 0 if($self->nonempty("$dir/$subdir", ($maxdepth-1)));
+ }
+ return 1;
+}
+
+sub dir_is_special
+{
+ my($self, $dir)=@_;
+ my $id=$self->{db}->lookup_id("tags", $dir);
+ if((grep { $_ eq $dir; } (qw(AND OR NOT), $PATH_ALLTRACKS,
+ $PATH_NOARTIST, $PATH_NOALBUM)) ||
+ ($id && $self->{db}->tag_has_values($id)))
+ {
+ return 1;
+ }
+ return 0;
+}
+
1;
projects / id3fs.git / blobdiff