NAME

File::IsSorted - check if the lines of a file are sorted lexicographically

VERSION

version 0.2.0

SYNOPSIS

    use File::IsSorted ();

    my $checker = File::IsSorted->new;

    $checker->is_file_sorted({ path => ".gitignore" });

DESCRIPTION

This checks if the lines of files or filehandles are monotonically and lexicographically increasing, (= are already sorted). It may consume less RAM and be faster than the naive way of doing cmp myfile.txt <(LC_ALL=C sort myfile.txt) and it runs at O(n) instead of O(n*log(n)) time and keeps O(1) lines instead of O(n).

METHODS

my $checker = File::IsSorted->new

Constructs a new object.

$checker->is_filehandle_sorted({fh => $input_fh, id => "my-file.txt"}); Checks if $input_fh is sorted - throws an exception if it is not sorted and returns true if it is.

$checker->is_file_sorted({path => "/path/to/file.txt", id => "my-file.txt"});

Checks if the file at path is sorted - throws an exception if it is not sorted and returns true if it is.

SUPPORT

Websites

The following websites have more information about this module, and may be of help to you. As always, in addition to those websites please use your favorite search engine to discover more resources.

• MetaCPAN

  A modern, open-source CPAN search engine, useful to view POD in HTML format.

  https://metacpan.org/release/File-IsSorted

• RT: CPAN's Bug Tracker

  The RT ( Request Tracker ) website is the default bug/issue tracking system for CPAN.

  https://rt.cpan.org/Public/Dist/Display.html?Name=File-IsSorted

• CPANTS

  The CPANTS is a website that analyzes the Kwalitee ( code metrics ) of a distribution.

  http://cpants.cpanauthors.org/dist/File-IsSorted

• CPAN Testers

  The CPAN Testers is a network of smoke testers who run automated tests on uploaded CPAN distributions.

  http://www.cpantesters.org/distro/F/File-IsSorted

• CPAN Testers Matrix

  The CPAN Testers Matrix is a website that provides a visual overview of the test results for a distribution on various Perls/platforms.

  http://matrix.cpantesters.org/?dist=File-IsSorted

• CPAN Testers Dependencies

  The CPAN Testers Dependencies is a website that shows a chart of the test results of all dependencies for a distribution.

  http://deps.cpantesters.org/?module=File::IsSorted

Bugs / Feature Requests

Please report any bugs or feature requests by email to bug-file-issorted at rt.cpan.org, or through the web interface at https://rt.cpan.org/Public/Bug/Report.html?Queue=File-IsSorted. You will be automatically notified of any progress on the request by the system.

Source Code

The code is open to the world, and available for you to hack on. Please feel free to browse it and play with it, or whatever. If you want to contribute patches, please send me a diff or prod me to pull from your repository :)

https://github.com/shlomif/perl-File-IsSorted

  git clone https://github.com/shlomif/perl-File-IsSorted.git

AUTHOR

Shlomi Fish <shlomif@cpan.org>

BUGS

Please report any bugs or feature requests on the bugtracker website https://github.com/shlomif/file-issorted/issues

When submitting a bug or request, please include a test-file or a patch to an existing test-file that illustrates the bug or desired feature.

COPYRIGHT AND LICENSE

This software is Copyright (c) 2019 by Shlomi Fish.

This is free software, licensed under:

  The MIT (X11) License

cpanm File::IsSorted

perl -MCPAN -e shell
install File::IsSorted