use strict;
use warnings;
-use feature 'switch';
use ID3FS::PathElement::Artist;
use ID3FS::PathElement::Album;
use ID3FS::PathElement::Boolean;
use ID3FS::PathElement::File;
use ID3FS::PathElement::Tag;
use ID3FS::PathElement::Tagval;
+use ID3FS::Path::Node;
our ($STATE_INVALID, $STATE_ROOT, $STATE_TAG, $STATE_TAGVAL,
- $STATE_BOOLEAN, $STATE_ARTISTS, $STATE_ALBUMS, $STATE_TRACKLIST,
- $STATE_FILE)=(0..8);
+ $STATE_BOOLEAN, $STATE_ALBUMS, $STATE_TRACKLIST,
+ $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 $self={};
bless($self,$class);
+ $self->{elements}=[];
$self->{db}=shift;
$self->{path}=shift;
+ $self->{verbose}=shift;
+ $self->{maxtagdepth}=shift;
+ $self->{curtagdepth}=0;
+ $self->{path} =~ s/\/\//\//g; # drop doubled slashes
+
$self->parse();
- print "STATE: ", $self->state(), "\n";
+# print "STATE: ", $self->state(), "\n";
return $self;
}
sub isdir
{
my($self)=@_;
- if(($self->state() eq $STATE_FILE) ||
- ($self->state() eq $STATE_INVALID))
+ if(($self->state() == $STATE_FILE) ||
+ ($self->state() == $STATE_INVALID))
{
return 0;
}
return 1;
}
+sub isfile
+{
+ my($self)=@_;
+ return($self->state() == $STATE_FILE);
+}
+
sub isvalid
{
my($self)=@_;
sub dest
{
- my($self)=@_;
+ my($self, $mountpoint)=@_;
if($self->state() == $STATE_FILE)
{
- return $self->{db}->filename(@{$self->{elements}});
+ return $self->filename($mountpoint);
}
return "ERROR"; #should never happen?
}
{
my($self)=@_;
my @dents=();
- given($self->state())
+ my @fents=();
+ my $state=$self->state();
+# print "DIRENTS: STATE: $state\n";
+# print "DIRENTS: FILE: $self->{path}\n";
+ if($state==$STATE_ALL)
{
- when($STATE_TAG)
- {
- @dents=qw(AND ARTISTS ALBUMS TRACKS);
- }
- when($STATE_BOOLEAN)
- {
- @dents=$self->{db}->tags(@{$self->{elements}});
- }
- when($STATE_ROOT)
- {
- @dents=("ALL", $self->{db}->tags(@{$self->{elements}}));
- }
- when($STATE_ARTISTS)
- {
- @dents=$self->{db}->artists(@{$self->{elements}});
- }
- when($STATE_ALBUMS)
+ @dents=($PATH_ALLTRACKS, $PATH_NOARTIST, $self->artists());
+ }
+ elsif($state==$STATE_TAG || $state==$STATE_TAGVAL)
+ {
+ if($state==$STATE_TAG && $self->at("tag") &&
+ $self->{db}->tag_has_values($self->tail()->id()))
{
- @dents=$self->{db}->albums(@{$self->{elements}});
+ @dents=$self->tags();
}
- when($STATE_TRACKLIST)
+ else
{
- @dents=$self->{db}->tracks(@{$self->{elements}});
+ if($self->{maxtagdepth} && ($self->{curtagdepth} < $self->{maxtagdepth}))
+ {
+ @dents=qw(AND OR);
+ }
+ push(@dents, $self->filter($PATH_ALLTRACKS, $PATH_NOARTIST));
+ push(@dents, $self->artists());
}
- default
+ }
+ elsif($state==$STATE_BOOLEAN)
+ {
+ my $parent=$self->tail();
+ unless($self->is("boolean", $parent) &&
+ $parent->{name} eq "NOT")
{
- print "DIRENTS: UNHANDLED STATE: $_\n";
+ @dents=("NOT");
}
+ push(@dents,$self->tags());
+ }
+ elsif($state==$STATE_ROOT)
+ {
+ @dents=(qw(ALL NOT), $self->tags());
+ }
+ elsif($state==$STATE_ALBUMS)
+ {
+ @dents=($self->filter($PATH_ALLTRACKS, $PATH_NOALBUM), $self->albums());
+ }
+ elsif($state==$STATE_TRACKLIST)
+ {
+ @fents=$self->tracks();
}
- return(@dents);
+ else
+ {
+ print "DIRENTS: UNHANDLED STATE: $state\n";
+ }
+ return(\@dents, \@fents);
}
sub parse
my($self)=@_;
@{$self->{components}}=split(/\//, $self->{path});
shift @{$self->{components}}; # drop empty field before leading /
- print "PATH: $self->{path}\n";
-# print "COMPONENTS: ", join(' | ', @{$self->{components}}), "\n";
+# print "PATH: $self->{path}\n";
$self->state($STATE_ROOT);
return if($self->{path} eq "/");
my @parts=@{$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: $name\n";
- given($self->state())
+# print "NAME: $name\n";
+ my $state=$self->state();
+ if($state==$STATE_INVALID)
{
- when($STATE_INVALID)
+# print "SM: INVALID: $name\n";
+ return;
+ }
+ elsif($state==$STATE_ROOT)
+ {
+# print "SM: ROOT: $name\n";
+ if($name eq "ALL")
{
- print "SM: INVALID: $name\n";
- return;
+ $self->{in_all}=1;
+ $self->state($STATE_ALL);
}
- when($STATE_ROOT)
+ elsif($name eq "NOT")
{
- print "SM: ROOT: $name\n";
- if($name eq "ALL")
- {
- $self->state($STATE_ARTISTS);
- }
- else
- {
- $tag=ID3FS::PathElement::Tag->new($self->{db}, $name);
- if($tag)
- {
- push(@{$self->{elements}}, $tag);
- $self->state($STATE_TAG);
- }
- else
- {
- $self->state($STATE_INVALID);
- }
- }
+ $root_not=1;
+ push(@{$self->{elements}}, ID3FS::PathElement::Boolean->new($self->{db}, $name));
+ $self->state($STATE_BOOLEAN);
}
- when($STATE_TAG)
+ else
{
- print "SM: TAG: $name\n";
- given($name)
- {
- when("AND")
- {
- $self->state($STATE_BOOLEAN);
-# push(@{$self->{elements}}, ID3FS::PathElement::Boolean->new($name));
- }
- when("ARTISTS")
- {
- $self->state($STATE_ARTISTS);
- }
- when("ALBUMS")
- {
- $self->state($STATE_ALBUMS);
- }
- when("TRACKS")
- {
- $self->state($STATE_TRACKLIST);
- }
-
-# when("OR") { ; }
-# when("NOT") { ; }
- default
- {
- $self->state($STATE_INVALID);
- }
- }
- }
-
- when(255) #FIXME - dead code
- {
- print "SM: WANTMORE: $name\n";
$tag=ID3FS::PathElement::Tag->new($self->{db}, $name);
if($tag)
{
push(@{$self->{elements}}, $tag);
-# $self->state($STATE_TAG);
+ $tags_seen++;
+ $self->state($STATE_TAG);
}
else
{
$self->state($STATE_INVALID);
}
- my @valid_tagvals=$self->{db}->tag_values($tag);
- print "TAGVALUES: $name: ", join(', ', @valid_tagvals), "\n";
- if(@valid_tagvals)
+ }
+ }
+ elsif($state==$STATE_TAG || $state==$STATE_TAGVAL)
+ {
+ my $tag=$self->tail();
+# print "SM: TAG/TAGVAL($state): $name\n";
+ if($state==$STATE_TAG && $self->is("tag", $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))
{
- if(grep { $name eq $_; } @valid_tagvals)
- {
- print "TAGVAL VALID\n";
- $self->state($STATE_TAGVAL);
- push(@{$self->{elements}}, ID3FS::PathElement::Tagval($name));
- }
- else
- {
- print "ERROR: unknown tagval: $tagval\n";
- $self->state($STATE_INVALID);
- }
+ $self->state($STATE_TAGVAL);
+ # stay in tag state
+ push(@{$self->{elements}}, $tagval);
}
else
{
$self->state($STATE_INVALID);
}
}
- when($STATE_TAGVAL)
+ elsif($name eq $PATH_ALLTRACKS)
{
- print "SM: TAGVAL: $name\n";
+ $self->state($STATE_TRACKLIST);
}
- when($STATE_BOOLEAN)
+ elsif($name eq $PATH_NOARTIST)
{
- print "SM: BOOLEAN: $name\n";
- my $tag=ID3FS::PathElement::Tag->new($self->{db}, $name);
- if($tag)
+ $self->state($STATE_TRACKLIST);
+ }
+ elsif($name eq "AND")
+ {
+ $self->state($STATE_BOOLEAN);
+ push(@{$self->{elements}}, ID3FS::PathElement::Boolean->new($self->{db}, $name));
+ }
+ elsif($name eq "OR")
+ {
+ $self->state($STATE_BOOLEAN);
+ push(@{$self->{elements}}, ID3FS::PathElement::Boolean->new($self->{db}, $name));
+ }
+ else
+ {
+ my $artist=ID3FS::PathElement::Artist->new($self->{db}, $name);
+ if($artist)
{
- push(@{$self->{elements}}, $tag);
- $self->state($STATE_TAG);
+ push(@{$self->{elements}}, $artist);
+ $self->state($STATE_ALBUMS);
}
else
{
$self->state($STATE_INVALID);
}
}
- when($STATE_ARTISTS)
+ }
+ elsif($state==$STATE_BOOLEAN)
+ {
+# print "SM: BOOLEAN: $name\n";
+ my $parent=$self->tail();
+ my $allownot=1;
+ if($self->is("boolean", $parent) &&
+ $parent->{name} eq "NOT")
{
- print "SM: ARTIST: $name\n";
- my $artist=ID3FS::PathElement::Artist->new($self->{db}, $name);
- push(@{$self->{elements}}, $tag);
- if($artist)
+ $allownot=0;
+ }
+ if($allownot && $name eq "NOT")
+ {
+ $self->state($STATE_BOOLEAN);
+ push(@{$self->{elements}}, ID3FS::PathElement::Boolean->new($self->{db}, $name));
+ }
+ else
+ {
+ my $tag=ID3FS::PathElement::Tag->new($self->{db}, $name);
+ if($tag)
{
- push(@{$self->{elements}}, $artist);
- $self->state($STATE_ALBUMS);
+ push(@{$self->{elements}}, $tag);
+ $tags_seen++;
+ $self->state($STATE_TAG);
}
else
{
$self->state($STATE_INVALID);
}
}
- when($STATE_ALBUMS)
+ }
+ elsif($state==$STATE_ALBUMS)
+ {
+# print "SM: ALBUM: $name\n";
+ if($name eq $PATH_ALLTRACKS)
+ {
+ $self->state($STATE_TRACKLIST);
+ }
+ elsif($name eq $PATH_NOALBUM)
+ {
+ $self->state($STATE_TRACKLIST);
+ }
+ else
{
- print "SM: ALBUM: $name\n";
my $album=ID3FS::PathElement::Album->new($self->{db}, $name);
- push(@{$self->{elements}}, $album);
if($album)
{
push(@{$self->{elements}}, $album);
$self->state($STATE_INVALID);
}
}
- when($STATE_TRACKLIST)
+ }
+ elsif($state==$STATE_TRACKLIST)
+ {
+# print "SM: TRACKLIST: $name\n";
+ my $track=ID3FS::PathElement::File->new($self->{db}, $name);
+ if($track)
{
- print "SM: TRACKS: $name\n";
- my $track=ID3FS::PathElement::File->new($self->{db}, $name);
push(@{$self->{elements}}, $track);
- if($track)
+ $self->state($STATE_FILE);
+ }
+ else
+ {
+ $self->state($STATE_INVALID);
+ }
+ }
+ elsif($state==$STATE_FILE)
+ {
+# print "SM: FILE: $name\n";
+ # 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)
+ {
+ $self->state($STATE_TRACKLIST);
+ }
+ else
+ {
+ my $artist=ID3FS::PathElement::Artist->new($self->{db}, $name);
+ if($artist)
{
- push(@{$self->{elements}}, $track);
- $self->state($STATE_FILE);
+ push(@{$self->{elements}}, $artist);
+ $self->state($STATE_ALBUMS);
}
else
{
$self->state($STATE_INVALID);
}
}
- when($STATE_FILE)
+ }
+ 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 && $self->is("boolean", $elements[$#elements]))
+ {
+ pop @elements;
+ }
+ # sort elements by precedence
+ @elements=$self->sort_elements(@elements);
+ $self->{tagtree}=$self->elements_to_tree(\@elements);
+ if($self->{tagtree})
+ {
+ ($self->{sqlconditions},
+ $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 $self->{tagtree};
+ }
+}
+
+sub state
+{
+ my($self, $newstate)=@_;
+ if(defined($newstate))
+ {
+ $self->{state}=$newstate;
+ $self->{curtagdepth}++ if($newstate == $STATE_TAG);
+ }
+ return $self->{state};
+}
+
+sub elements_to_tree
+{
+ my($self, $elements)=@_;
+ return undef unless(@$elements);
+ my ($left, $right, $op)=(undef, undef, undef);
+ my $thing=pop @$elements;
+ if($self->is("boolean", $thing))
+ {
+ my $op=$thing;
+ $right=$self->elements_to_tree($elements);
+ if($op->{name} ne "NOT")
+ {
+ $left=$self->elements_to_tree($elements);
+ }
+ return ID3FS::Path::Node->new($left, $op, $right);
+ }
+ else
+ {
+ return ID3FS::Path::Node->new($thing);
+ }
+}
+
+# Dijkstra's shunting-yard algorithm
+sub sort_elements
+{
+ my ($self, @input)=@_;
+ my @opstack=();
+ my @output=();
+# print "INPUT: ", join(', ', map { $_->{name}; } @input), "\n";
+ while(my $thing = shift @input)
+ {
+ if($self->is("tag", $thing))
+ {
+ # Handle tag values by dropping parent
+ if(@input && $self->is("tag", $input[0]))
{
- print "SM: FILE: $name\n";
- # Can't have anything after a filename
- $self->state($STATE_INVALID);
+ $thing=shift @input;
}
- default
+ push(@output, $thing);
+ }
+ elsif($self->is("boolean", $thing))
+ {
+ # bool
+ while(@opstack &&
+ ($priorities{$thing->{name}} <= $priorities{$opstack[$#opstack]->{name}}))
{
- print "SM: ERROR: UNKNOWN STATE: $self->{state}\n";
- $self->state($STATE_INVALID);
+ push(@output, pop(@opstack));
}
+ push(@opstack, $thing);
}
}
+ while(@opstack)
+ {
+ push(@output, pop(@opstack));
+ }
+# print "STACK: ", join(', ', map { $_->{name}; } @output), "\n";
+ return @output;
}
-sub state
+sub used_tags
{
- my($self, $newstate)=@_;
- $self->{state}=$newstate if(defined($newstate));
- return $self->{state};
+ my($self)=@_;
+ return() unless(defined($self->{tagtree}));
+ return($self->{tagtree}->used_tags());
+}
+
+sub expecting_values
+{
+ my($self)=@_;
+ my $tail=$self->tail();
+ if($self->is("tag", $tail))
+ {
+ return($self->{db}->tag_has_values($tail->id()));
+ }
+}
+
+sub trailing_tag_id
+{
+ my($self)=@_;
+ my $tail=$self->tail();
+ if($self->is("tag", $tail))
+ {
+ return($tail->id());
+ }
+ return undef;
+}
+
+sub trailing_tag_parent
+{
+ my($self)=@_;
+ my $tail=$self->tail();
+ if($self->is("tag", $tail))
+ {
+ return($tail->{parents_id});
+ }
+ return undef;
+}
+
+sub tail
+{
+ my($self)=@_;
+ return($self->{elements}->[$#{$self->{elements}}]);
+}
+
+sub at
+{
+ my($self, $type)=@_;
+ return($self->is($type, $self->tail()));
+}
+
+sub is
+{
+ my($self, $type, $thing)=@_;
+ return 0 unless($thing);
+ my $ref=ref($thing);
+ my $typestr="ID3FS::PathElement::" . ucfirst($type);
+ return 1 if($ref eq $typestr);
+ return 0;
+}
+
+# the one before last
+sub tail_parent
+{
+ my($self)=@_;
+ return($self->{elements}->[($#{$self->{elements}}) - 1]);
+}
+
+######################################################################
+
+sub tags
+{
+ my($self)=@_;
+ if(!$self->{tagtree}) # / or /NOT
+ {
+ 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 $sql=$self->sql_start("artists.name");
+ $sql .= ("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($self->is("artist", $tail))
+ {
+ return $self->artist_albums($tail->id());
+ }
+ my $sql=$self->sql_start("albums.name");
+ $sql .= ("INNER JOIN albums ON files.albums_id=albums.id\n" .
+ "WHERE albums.name != ''\n" .
+ "GROUP BY albums.name;");
+ print "SQL(ALBUMS): \n$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 $sql=$self->sql_start("albums.name");
+ $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 $sql=$self->sql_start("files.name");
+ $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($self->is("artist", $tail))
+ {
+ return $self->artist_tracks($tail->id());
+ }
+ elsif($self->is("album", $tail))
+ {
+ my $artist_id=0;
+ my $artist=$self->tail_parent();
+ if($self->is("artist", $artist))
+ {
+ # should always happen
+ $artist_id=$artist->id();
+ }
+ return $self->album_tracks($artist_id, $tail->id());
+ }
+ my $sql=$self->sql_start("files.name");
+ $sql .= "INNER JOIN artists ON files.artists_id=artists.id\n";
+ if($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($self->is("file", $tail))
+ {
+ 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, $mountpoint));
+ }
+ # should never happen
+ return "ERROR";
+}
+
+sub tags_subselect
+{
+ my($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 { $self->is("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 sql_start
+{
+ my($self, $tables)=@_;
+ my $sql="SELECT $tables FROM ";
+ if($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");
+ }
+ return $sql;
+}
+
+
+sub constraints_tag_list
+{
+ my($self, @constraints)=@_;
+ my $lasttag=undef;
+ my @tags=();
+ my @tags_vals=();
+ for my $constraint (@constraints)
+ {
+# print ref($constraint), ": ", $constraint->{name}, "\n";
+ if($self->is("tag", $constraint))
+ {
+ if(defined($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()));
+ }
+ }
+ }
+ @tags=map{ "\"$_\""; } @tags;
+ @tags_vals=map( { [ map({ "\"$_\""; } @$_ ) ] } @tags_vals);
+ $lasttag="\"$lasttag\"" if defined($lasttag);
+ return(\@tags, \@tags_vals, $lasttag);
+}
+
+# we just filter $ALLTRACKS, $NOARTIST and $NOALBUM
+# filtering tags properly requires up to four levels of recursion
+# (tag/tagval/AND/NOT) and is too slow
+sub filter
+{
+ my($self, @dirs)=@_;
+ my $base=$self->{path};
+ my @outdirs=();
+ for my $dir (@dirs)
+ {
+ print "\nFILTER (",$self->state(), "): $base / $dir\n";
+ if($self->empty("$base/$dir"))
+ {
+ print "empty: $base / $dir\n";
+ }
+ else
+ {
+ print "non-empty, accepting: $base / $dir\n";
+ push(@outdirs, $dir);
+ }
+ }
+ return(@outdirs);
+}
+
+sub empty
+{
+ my($self, $dir)=@_;
+ my $path=ID3FS::Path->new($self->{db}, $dir, $self->{verbose},
+ ($self->{maxtagdepth} - $self->{curtagdepth}));
+ return 1 unless($path->isvalid());
+ my($subdirs,$subfiles)=$path->dirents();
+ return 0 if(@$subfiles || @$subdirs);
+ return 1;
}
1;
projects / id3fs.git / blobdiff