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package Demeter::MRU;
=for Copyright
.
Copyright (c) 2006-2019 Bruce Ravel (http://bruceravel.github.io/home).
All rights reserved.
.
This file is free software; you can redistribute it and/or
modify it under the same terms as Perl itself. See The Perl
Artistic License.
.
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.
=cut
use Moose::Role;
use Demeter::IniReader;
use Demeter::IniWriter;
#use Config::INI::Writer;
#use Config::IniFiles;
use File::Spec;
use List::MoreUtils qw(uniq);
use Encode qw(decode);
my $max_mru = 15;
sub push_mru {
my ($self, $group, $file, $record) = @_;
return $self if ($self->mo->ui eq 'web');
if ($record) {
$file = $file . " <$record>";
};
my $stash = $self->stash_folder;
$stash =~ s{\\}{\\\\}g if $self->is_windows; # it seems like there should be something more elegant...
return $self if ($file =~ m{$stash});
my $mrufile = File::Spec->catfile($self->dot_folder, "demeter.mru");
my $slurp = Demeter->slurp($mrufile);
my $rmru = Demeter::IniReader->read_file($mrufile); # no clue what causes it, but this averts a crash in Config::INI:Reader
my %mru = %$rmru;
#tie %mru, 'Config::IniFiles', ( -file => $mrufile );
my @list_of_files;
if (exists $mru{$group}) {
my %hash = %{ $mru{$group} };
@list_of_files = map { $hash{$_} } sort {$a <=> $b} keys %hash;
} else {
$mru{$group} = {};
};
unshift @list_of_files, $file;
@list_of_files = uniq @list_of_files;
($#list_of_files = $max_mru) if ($#list_of_files > $max_mru);
my $i = 0;
foreach my $f (@list_of_files) {
$mru{$group}{$i} = $f;
++$i;
};
#tied(%mru)->WriteConfig($mrufile);
Demeter::IniWriter->write_file(\%mru, $mrufile);
#Config::INI::Writer->write_file(\%mru, $mrufile);
#undef %mru;
return $self;
};
sub get_mru_list {
my ($self, @groups) = @_;
#my $rmru = Demeter::IniReader->read_file(File::Spec->catfile($self->dot_folder, "demeter.mru"));
my $rmru;
eval {local $SIG{__DIE__}=sub {}; $rmru = Demeter::IniReader->read_file(File::Spec->catfile($self->dot_folder, "demeter.mru"))};
return () if ($@);
my %mru = %$rmru;
#tie %mru, 'Config::IniFiles', ( -file => File::Spec->catfile($self->dot_folder, "demeter.mru") );
my @list_of_files = ();
foreach my $g (@groups) {
next if not $mru{$g};
my %hash = %{ $mru{$g} };
#foreach my $k (keys %hash) {
# $hash{$k} = decode('UTF-8', $hash{$k});
# (-e $hash{$k}) ? print "yup ".$hash{$k}.$/ :print "nope ".$hash{$k}.$/ ;
#};
push @list_of_files, map { [$hash{$_}, $g] } grep {$self->minus_e($hash{$_})} sort {$a <=> $b} keys %hash;
};
undef %mru;
return @list_of_files;
};
sub minus_e {
my ($self, $string) = @_;
return 1 if -e $string;
if ($string =~ m{(\s+<\d?>)\z}) {
$string =~ s{$1}{};
};
return 1 if -e $string;
return 0;
};
1;
=head1 NAME
Demeter::MRU - Handle lists of recently used file
=head1 VERSION
This documentation refers to Demeter version 0.9.26.
=head1 DESCRIPTION
This module contains methods for reading from and writing to lists of
recently used files.
=head1 METHODS
=over 4
=item C<push_mru>
Push a file onto the top of the list of recently used files for a file
group.
$atoms_object -> push_mru( "atoms", $input_file);
This pushes C<$input_file> to the head of the list of recent files in
the C<atoms> group.
You can maintain any number of groups. For instance, you might have
separate groups for data, project files, crystal data files, and so
on.
=item C<get_mru_list>
Return the list of recently used files from a file group:
my @list_of_files = $atoms_object->get_mru_list("atoms");
or
my @list_of_files = $atoms_object->get_mru_list(@list_of_goups);
The argument is one or more group names.
This list is actually a list of lists, like so:
[ [file1, group1],
[file2, group2],
...
[fileN, groupN],
]
where the groups are things like "atoms", "feff" -- that is categories
of files used to organize the ini file containing the recent files.
=back
=head1 DIAGNOSTICS
None.
=head1 CONFIGURATION AND ENVIRONMENT
The recently used file lists are kept in a file called F<demeter.mru>
in the dotfile directory, C<$HOME/.horae> on unix and C<something> on
WIndows.
See L<Demeter::Config> for a description of the configuration system.
=head1 DEPENDENCIES
Demeter's dependencies are in the F<Build.PL> file.
=head1 BUGS AND LIMITATIONS
=over 4
=item *
List length is 16 items. This should be configurable.
=back
Please report problems to the Ifeffit Mailing List
(L<http://cars9.uchicago.edu/mailman/listinfo/ifeffit/>)
Patches are welcome.
=head1 AUTHOR
Bruce Ravel, L<http://bruceravel.github.io/home>
L<http://bruceravel.github.io/demeter/>
=head1 LICENCE AND COPYRIGHT
Copyright (c) 2006-2019 Bruce Ravel (L<http://bruceravel.github.io/home>). All rights reserved.
This module is free software; you can redistribute it and/or
modify it under the same terms as Perl itself. See L<perlgpl>.
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.
=cut
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