/ 
Dancer2-2.1.0
River stage three • 176 direct dependents • 198 total dependents
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/ Dancer2::FileUtils

NAME

Dancer2::FileUtils - File utility helpers

VERSION

version 2.1.0

SYNOPSIS

use Dancer2::FileUtils qw/dirname path path_or_empty/;

# for 'path/to/file'
my $dir  = dirname($path); # returns 'path/to'
my $path = path($path);    # returns '/abs/path/to/file'
my $path = path_or_empty($path);    # returns '' if file doesn't exist


use Dancer2::FileUtils qw/path read_file_content/;

my $content = read_file_content( path( 'folder', 'folder', 'file' ) );
my @content = read_file_content( path( 'folder', 'folder', 'file' ) );


use Dancer2::FileUtils qw/read_glob_content set_file_mode/;

open my $fh, '<', $file or die "$!\n";
set_file_mode($fh);
my @content = read_glob_content($fh);
my $content = read_glob_content($fh);


use Dancer2::FileUtils qw/open_file/;

my $fh = open_file('<', $file) or die $message;


use Dancer2::FileUtils 'set_file_mode';

set_file_mode($fh);

DESCRIPTION

Dancer2::FileUtils includes a few file related utilities that Dancer2 uses internally. Developers may use it instead of writing their own file reading subroutines or using additional modules.

FUNCTIONS

my $path = path( 'folder', 'folder', 'filename');

Calls Path::Tiny's path(...)->stringify path parts. Better if you use Path::Tiny::path(@parts) directly instead.

If you want to normalize the path (for existing path), use:

Path::Tiny::path(@parts)->realpath->stringify;

my $path = path_or_empty('folder, 'folder','filename');

Like path, but returns '' if path doesn't exist.

dirname

use Dancer2::FileUtils 'dirname';
my $dir = dirname($path);

# Same thing:
use Path::Tiny qw< path >;
my $dir       = path($path)->parent;
my $as_string = $dir->stringify;

Fetches the directory name of a path On most OS, returns all but last level of file path. See Path::Tiny for details.

set_file_mode($fh, $charset);

use Dancer2::FileUtils 'set_file_mode';

set_file_mode($fh);

Applies the specified charset. Defaults to utf-8 if no charset is provided. An empty charset disables encoding layers.

my $fh = open_file('<', $file, $charset) or die $message;

use Dancer2::FileUtils 'open_file';
my $fh = open_file('<', $file) or die $message;

Calls open and returns a filehandle. If a charset is provided, opens the file in that encoding; otherwise defaults to utf-8. An empty charset disables encoding layers.

my $content = read_file_content($file, $charset);

use Dancer2::FileUtils 'read_file_content';

my @content = read_file_content($file);
my $content = read_file_content($file);

Returns either the content of a file (whose filename is the input), or undef if the file could not be opened.

In array context it returns each line (as defined by $/) as a separate element; in scalar context returns the entire contents of the file.

my $content = read_glob_content($fh);

use Dancer2::FileUtils 'read_glob_content';

open my $fh, '<', $file or die "$!\n";
binmode $fh, ':encoding(utf-8)';
my @content = read_glob_content($fh);
my $content = read_glob_content($fh);

Similar to read_file_content, only it accepts a file handle. It is assumed that the appropriate PerlIO layers are applied to the file handle. Returns the content and closes the file handle.

my $escaped_filename = escape_filename( $filename );

Escapes characters in a filename that may alter a path when concatenated.

use Dancer2::FileUtils 'escape_filename';

my $safe = escape_filename( "a/../b.txt" ); # a+2f+2e+2e+2fb+2etxt

EXPORT

Nothing by default. You can provide a list of subroutines to import.

AUTHOR

Dancer Core Developers

COPYRIGHT AND LICENSE

This software is copyright (c) 2026 by Alexis Sukrieh.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.