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1 | package Devel::REPL::Plugin::Colors; |
2 | |
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3 | use Devel::REPL::Plugin; |
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4 | use Term::ANSIColor; |
5 | use namespace::clean -except => [ 'meta' ]; |
6 | |
7 | has normal_color => ( |
8 | is => 'rw', lazy => 1, |
9 | default => 'green', |
10 | ); |
11 | |
12 | has error_color => ( |
13 | is => 'rw', lazy => 1, |
14 | default => 'bold red', |
15 | ); |
16 | |
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17 | around format_error => sub { |
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18 | my $orig = shift; |
19 | my $self = shift; |
20 | return color($self->error_color) |
21 | . $orig->($self, @_) |
22 | . color('reset'); |
23 | }; |
24 | |
25 | # we can't just munge @_ because that screws up DDS |
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26 | around format_result => sub { |
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27 | my $orig = shift; |
28 | my $self = shift; |
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29 | no warnings 'uninitialized'; |
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30 | return join "", ( |
31 | color($self->normal_color), |
32 | $orig->($self, @_), |
33 | color('reset'), |
34 | ); |
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35 | }; |
36 | |
37 | # make arbitrary warns colored -- somewhat difficult because warn doesn't |
38 | # get $self, so we localize $SIG{__WARN__} during eval so it can get |
39 | # error_color |
40 | |
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41 | sub _wrap_warn { |
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42 | my $orig = shift; |
43 | my $self = shift; |
44 | |
45 | local $SIG{__WARN__} = sub { |
46 | my $warning = shift; |
47 | chomp $warning; |
48 | warn color($self->error_color || 'bold red') |
49 | . $warning |
50 | . color('reset') |
51 | . "\n"; |
52 | }; |
53 | |
54 | $orig->($self, @_); |
55 | }; |
56 | |
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57 | around compile => \&_wrap_warn; |
58 | around execute => \&_wrap_warn; |
59 | |
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60 | 1; |
61 | |
62 | __END__ |
63 | |
64 | =head1 NAME |
65 | |
66 | Devel::REPL::Plugin::Colors - add color to return values, warnings, and errors |
67 | |
68 | =head1 SYNOPSIS |
69 | |
70 | #!/usr/bin/perl |
71 | |
72 | use lib './lib'; |
73 | use Devel::REPL; |
74 | |
75 | my $repl = Devel::REPL->new; |
76 | $repl->load_plugin('LexEnv'); |
77 | $repl->load_plugin('History'); |
78 | $repl->load_plugin('Colors'); |
79 | $repl->run; |
80 | |
81 | =head1 DESCRIPTION |
82 | |
83 | Colors are very pretty. |
84 | |
85 | This plugin causes certain prints, warns, and errors to be colored. Generally |
86 | the return value(s) of each line will be colored green (you can override this |
87 | by setting C<< $_REPL->normal_color >> in your rcfile). Warnings and |
88 | compile/runtime errors will be colored with C<< $_REPL->error_color >>. This |
89 | plugin uses L<Term::ANSIColor>, so consult that module for valid colors. The |
90 | defaults are actually 'green' and 'bold red'. |
91 | |
92 | =head1 SEE ALSO |
93 | |
94 | C<Devel::REPL> |
95 | |
96 | =head1 AUTHOR |
97 | |
98 | Shawn M Moore, C<< <sartak at gmail dot com> >> |
99 | |
100 | =head1 COPYRIGHT AND LICENSE |
101 | |
102 | Copyright (C) 2007 by Shawn M Moore |
103 | |
104 | This library is free software; you can redistribute it and/or modify |
105 | it under the same terms as Perl itself. |
106 | |
107 | =cut |