NAME

       App::DocKnot::Spin::Versions - Parse package release information for spin

SYNOPSIS

           use App::DocKnot::Spin::Versions;
           my $versions = App::DocKnot::Spin::Versions('/path/to/.versions');
           my $version = $versions->version('some-package');
           my $release_date = $versions->release_date('some-package');
           my $timestamp = $versions->latest_release('some/file/index.th');

REQUIREMENTS

       Perl 5.24 or later and the Path::Tiny module, available from CPAN.

DESCRIPTION

       App::DocKnot::Spin supports a database of release information for packages that may be
       referenced in the generated web site.  This is stored as the file named .versions at the
       top of the source tree.  This module parses that file and provides an API to the
       information it contains.

       The file should consist of lines (except for continuation lines, see below) in the form:

           <package>  <version>  <date>  <time>  <files>

       starting in the first column.  Each field is separated by one or more spaces except the
       last, <files>, which is all remaining space-separated words of the line.  Blank lines and
       lines starting with "#" in the first column are ignored.

       The fields are:

       <package>
           The name of a package.

       <version>
           The version number of the latest release of that package.

       <date>
           The date of the latest release of that package in YYYY-MM-DD format in the local time
           zone.

       <time>
           The time of the latest release of that package in HH:MM:SS format in the local time
           zone.

       <files>
           Any number of thread input files affected by this release, separated by spaces.  The
           file names should be relative to the top of the source tree for the web site.

       The <files> field can be continued on the following line by starting the line with
       whitespace.  Each whitespace-separated word in a continuation line is taken as an
       additional affected file for the previous line.

       This information is used for the "\version" and "\release" thread commands and to force
       regeneration of files affected by a release with a timestamp newer than the timestamp of
       the corresponding output file.

CLASS METHODS

       new(PATH)
           Create a new App::DocKnot::Spin::Versions object for the .versions file specified by
           PATH.

INSTANCE METHODS

       latest_release(PATH)
           Return the timestamp (in seconds since epoch) for the latest release affecting PATH,
           or 0 if no releases affect that file.

       release_date(PACKAGE)
           Return the release date of the latest release of PACKAGE (in UTC), or "undef" if there
           is no release information for PACKAGE.

       update_version(PACKAGE, VERSION, TIMESTAMP)
           Given a new VERSION and TIMESTAMP (in seconds since epoch) for a release of PACKAGE,
           update the release information in the .versions file for that package accordingly.  If
           the .versions file is at the root of a Git repository, this change will be staged with
           "git add".

       version(PACKAGE)
           Return the version of the latest release of PACKAGE, or "undef" if there is no release
           information for PACKAGE.

AUTHOR

       Russ Allbery <rra@cpan.org>

COPYRIGHT AND LICENSE

       Copyright 2004, 2021-2022 Russ Allbery <rra@cpan.org>

       Permission is hereby granted, free of charge, to any person obtaining a copy of this
       software and associated documentation files (the "Software"), to deal in the Software
       without restriction, including without limitation the rights to use, copy, modify, merge,
       publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
       to whom the Software is furnished to do so, subject to the following conditions:

       The above copyright notice and this permission notice shall be included in all copies or
       substantial portions of the Software.

       THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
       INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
       PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
       FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
       OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
       DEALINGS IN THE SOFTWARE.

SEE ALSO

       docknot(1), App::DocKnot::Spin

       This module is part of the App-DocKnot distribution.  The current version of DocKnot is
       available from CPAN, or directly from its web site at
       <https://www.eyrie.org/~eagle/software/docknot/>.