+# id3fs - a FUSE-based filesystem for browsing audio metadata
+# Copyright (C) 2010 Ian Beckwith <ianb@erislabs.net>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
package ID3FS::Path;
use strict;
our %priorities=( "OR" => 0, "AND" => 1, "NOT" => 2 );
-our $PATH_ALLTRACKS="TRACKS";
-our $PATH_NOARTIST="NOARTIST";
-our $PATH_NOALBUM="NOALBUM";
+our $PATH_ALLTRACKS= "TRACKS";
+our $PATH_NOARTIST = "NOARTIST";
+our $PATH_NOALBUM = "NOALBUM";
+
+our $ENABLE_FILTER = 1;
sub new
{
# print "DIRENTS: FILE: $self->{path}\n";
if($state==$STATE_ALL)
{
- @dents=($PATH_ALLTRACKS, $PATH_NOARTIST, $self->artists());
+ @dents=($self->filter($PATH_ALLTRACKS, $PATH_NOARTIST), $self->artists());
}
elsif($state==$STATE_TAG || $state==$STATE_TAGVAL)
{
{
@dents=qw(AND OR);
}
- push(@dents, $self->filter($PATH_ALLTRACKS, $PATH_NOARTIST));
- push(@dents, $self->artists());
+ push(@dents, $self->filter($PATH_ALLTRACKS, $PATH_NOARTIST), $self->artists());
}
}
elsif($state==$STATE_BOOLEAN)
}
elsif($state==$STATE_ALBUMS)
{
- @dents=($self->filter($PATH_ALLTRACKS, $PATH_NOALBUM), $self->albums());
+ @dents=$self->filter($PATH_ALLTRACKS, $PATH_NOALBUM, $self->albums());
}
elsif($state==$STATE_TRACKLIST)
{
my @parts=@{$self->{components}};
my($tag, $tagval);
$self->{elements}=[];
- $self->{bare_not}=0;
$self->{in_all}=0;
my $root_not=0;
my $tags_seen=0;
}
}
- if($root_not && ($tags_seen < 2))
- {
- $self->{bare_not}=1;
- }
-
# remove trailing boolean
my @elements=@{$self->{elements}};
while(@elements && $self->is("boolean", $elements[$#elements]))
$self->{tagtree}=$self->elements_to_tree(\@elements);
if($self->{tagtree})
{
- my ($conditions, @joins)=$self->{tagtree}->to_sql();
-# print "CONDITIONS(", scalar(@joins), "): ", $conditions, "\n";
-# print "TREE: ", $self->{tagtree}->print(), "\n";
-# print("SQL CONDITION(", scalar(@{$self->{joins}}), "): ",
-# $self->{sqlconditions}, "\n");
# use Data::Dumper;
+# print "TREE\n";
# print Dumper $self->{tagtree};
+# my ($conditions, @joins)=$self->{tagtree}->to_sql();
+# print "CONDITIONS(", scalar(@joins), "): ", $conditions, "\n";
}
}
# 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)
+ my $sql="SELECT tags.name FROM ";
+ if($self->in_or())
{
-# 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);
+ $sql .= "files_x_tags\n";
}
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] . "'))");
- }
+ $sql .= ("(\n" .
+ $self->tags_subselect() .
+ ") AS subselect\n" .
+ "INNER JOIN files_x_tags ON subselect.files_id=files_x_tags.files_id\n");
}
+ $sql .= "INNER JOIN tags ON files_x_tags.tags_id=tags.id\n";
+ my @andclauses=();
+ my $id=$self->trailing_tag_id();
- my $parentclause= "(tags.parents_id='";
+ my $parentclause= "tags.parents_id='";
if($hasvals)
{
$parentclause .= $id;
{
$parentclause .= $parent;
}
- $parentclause .= "')";
+ $parentclause .= "'";
push(@andclauses, $parentclause);
- if(@orclauses)
+ my @used=$self->used_tags();
+ if(@used)
{
- push(@andclauses, '( ' . join(' OR ', @orclauses) . ' )');
+ push(@andclauses, "tags.id NOT IN (" . join(', ', @used) . ")");
}
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 "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, $mountpoint));
+ return($self->{db}->relativise($path, $name, $mountpoint, $self->{path}));
}
# should never happen
return "ERROR";
{
my($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};
- print "UNDEF!!\n" unless($self->{tagtree});
- use Data::Dumper;
- print Dumper $tree;
my $parent=$self->trailing_tag_parent();
-# print "ELEMENTS: ", join('/', map { $_->{name}; } @{$self->{elements}}), "\n";
-# print "TREE: ", $tree->print(), "\n";
my $tag=undef;
if($hasvals)
{
}
my ($sqlclause, @joins)=(undef, ());
($sqlclause, @joins) = $tree->to_sql($hasvals) if($tree);
-# print "SQL(" . scalar(@joins) .": $sqlclause\n";
+# print "SQL(" . scalar(@joins) ."): $sqlclause\n";
my $sql="\tSELECT fxt1.files_id FROM tags t1";
my @crosses=();
my @inners=();
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)=@_;
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)=@_;
+ return(@dirs) unless($ENABLE_FILTER);
my $base=$self->{path};
my @outdirs=();
for my $dir (@dirs)
{
- print "\nFILTER (",$self->state(), "): $base / $dir\n";
+# print "\nFILTER (",$self->state(), "): $base / $dir\n";
if($self->empty("$base/$dir"))
{
- print "empty: $base / $dir\n";
+# print "empty: $base / $dir\n";
}
else
{
- print "non-empty, accepting: $base / $dir\n";
+# print "non-empty, accepting: $base / $dir\n";
push(@outdirs, $dir);
}
}
return 1;
}
+# if path is .../OR/ or .../OR/NOT
+sub in_or
+{
+ my($self)=@_;
+ my $tail=$self->tail();
+ return 0 unless($tail);
+ return 0 unless($tail->type() eq "boolean");
+ return 1 if($tail->name() eq "OR");
+ return 0 unless($tail->name() eq "NOT");
+ my $parent=$self->tail_parent();
+ return 0 unless($parent);
+ return 0 unless($parent->type() eq "boolean");
+ return 1 if($parent->name() eq "OR");
+ return 0;
+}
+
1;
projects / id3fs.git / blobdiff