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103 lines
2.0 KiB
103 lines
2.0 KiB
package App::WRT::Util;
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use strict;
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use warnings;
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use open qw(:std :utf8);
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use Carp;
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use Encode;
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use base qw(Exporter);
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our @EXPORT_OK = qw(dir_list file_put_contents file_get_contents);
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=over
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=item dir_list($dir, $sort_order, $pattern)
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Return a $sort_order sorted list of files matching regex $pattern in a
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directory.
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Calls $sort_order, which can be one of:
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alpha - alphabetical
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reverse_alpha - alphabetical, reversed
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high_to_low - numeric, high to low
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low_to_high - numeric, low to high
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=cut
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sub dir_list {
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my ($dir, $sort_order, $pattern) = @_;
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$pattern //= qr/^[0-9]{1,2}$/;
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$sort_order //= 'high_to_low';
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opendir my $list_dir, $dir
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or croak "Couldn't open $dir: $!";
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my @files = sort $sort_order
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grep { m/$pattern/ }
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readdir $list_dir;
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closedir $list_dir;
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return @files;
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}
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# Various named sorts for dir_list:
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sub alpha { $a cmp $b; } # alphabetical
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sub high_to_low { $b <=> $a; } # numeric, high to low
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sub low_to_high { $a <=> $b; } # numberic, low to high
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sub reverse_alpha { $b cmp $a; } # alphabetical, reversed
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=item file_put_contents($file, $contents)
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Write $contents string to $file path. Because:
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L<https://secure.php.net/manual/en/function.file-put-contents.php>
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=cut
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sub file_put_contents {
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my ($file, $contents) = @_;
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open(my $fh, '>', $file)
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or croak "Unable to open $file for writing: $!";
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print $fh $contents;
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close $fh;
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}
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=item file_get_contents($file)
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Get contents string of $file path. Because:
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L<https://secure.php.net/manual/en/function.file-get-contents.php>
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=cut
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sub file_get_contents {
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my ($file) = @_;
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# Make warnings here fatal, and return some useful info about which file is
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# being opened:
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local $SIG{__WARN__} = sub {
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croak "$_[0] when opening $file\n";
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};
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open my $fh, '<', $file
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or croak "Couldn't open $file: $!\n";
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my $contents;
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{
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# line separator:
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local $/ = undef;
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$contents = <$fh>;
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}
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close $fh or croak "Couldn't close $file: $!";
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return $contents;
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}
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=back
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1;
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