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