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

       Russ Allbery <rra@cpan.org>

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

       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.

       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.

       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.

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

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

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/>.

perl v5.38.2                                       2024-07-14                  App::DocKnot::Spin::Versions(3pm)

           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');