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1 | package Devel::REPL::Plugin::History; |
2 | |
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3 | use Devel::REPL::Plugin; |
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4 | use namespace::sweep; |
5 | use MooX::Types::MooseLike::Base qw(ArrayRef); |
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6 | |
7 | has 'history' => ( |
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8 | isa => ArrayRef, is => 'rw', required => 1, lazy => 1, |
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9 | default => sub { [] } |
10 | ); |
11 | |
12 | # lazy so ReadLineHistory Plugin can set this |
13 | has 'have_readline_history' => ( |
14 | is => 'rw', required => 1, lazy => 1, |
15 | default => sub { 0 } |
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16 | ); |
17 | |
18 | sub push_history { |
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19 | my ($self, $line) = @_; |
20 | # Push history is not needed if we have Term::ReadLine |
21 | # support. We put the test inside push_history() in case |
22 | # someone has modified it in their code. |
23 | if ($self->have_readline_history) { |
24 | # update history to keep consistent with Term::ReadLine |
25 | $self->history( [ $self->term->GetHistory ] ); |
26 | } else { |
27 | # not used with Term::ReadLine history support |
28 | push(@{$self->history}, $line); |
29 | } |
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30 | } |
31 | |
32 | around 'read' => sub { |
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33 | my $orig = shift; |
34 | my ($self, @args) = @_; |
35 | my $line = $self->$orig(@args); |
36 | if (defined $line) { |
37 | if ($line =~ m/^!(.*)$/) { |
38 | my $call = $1; |
39 | $line = $self->history_call($call); |
40 | if (defined $line) { |
41 | $self->print($line."\n"); |
42 | } else { |
43 | return "'Unable to find ${call} in history'"; |
44 | } |
45 | } |
46 | if ($line =~ m/\S/) { |
47 | $self->push_history($line); |
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48 | } |
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49 | } |
50 | return $line; |
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51 | }; |
52 | |
53 | sub history_call { |
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54 | my ($self, $call) = @_; |
55 | if ($call =~ m/^(-?\d+)$/) { # handle !1 or !-1 |
56 | my $idx = $1; |
57 | $idx-- if ($idx > 0); # !1 gets history element 0 |
58 | my $line = $self->history->[$idx]; |
59 | return $line; |
60 | } |
61 | my $re = qr/^\Q${call}\E/; |
62 | foreach my $line (reverse @{$self->history}) { |
63 | return $line if ($line =~ $re); |
64 | } |
65 | return; |
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66 | }; |
67 | |
68 | 1; |
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69 | |
70 | __END__ |
71 | |
72 | =head1 NAME |
73 | |
74 | Devel::REPL::Plugin::History - Keep track of all input, provide shortcuts !1, !-1 |
75 | |
76 | =cut |
77 | |