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38 lines
744 B
Perl
38 lines
744 B
Perl
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use strict;
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use warnings;
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# ABSTRACT: internally-used helper functions
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package Parse::Matroska::Utils;
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use Exporter;
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our @ISA = qw{Exporter};
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our @EXPORT_OK = qw{uniq uncamelize};
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=method uniq(@array)
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The same as L<List::MoreUtils/"uniq LIST">.
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Included to avoid depending on it since it's
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not a core module.
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=cut
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sub uniq(@) {
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my %seen;
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return grep { !$seen{$_}++ } @_;
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}
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=method uncamelize($string)
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Converts a "StringLikeTHIS" into a
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"string_like_this".
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=cut
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sub uncamelize($) {
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local $_ = shift;
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# lc followed by UC: lc_UC
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s/(?<=[a-z])([A-Z])/_\L$1/g;
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# UC followed by two lc: _UClclc
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s/([A-Z])(?=[a-z]{2})/_\L$1/g;
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# strip leading _ that the second regexp might add; lowercase all
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s/^_//; lc
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}
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