SVN::Hooks::CheckStructure.3pm

Langue: en

Autres versions - même langue

Version: 2010-01-07 (ubuntu - 24/10/10)

Section: 3 (Bibliothèques de fonctions)

Sommaire

NAME

SVN::Hooks::CheckStructure - Check the structure of a repository.

SYNOPSIS

This SVN::Hooks plugin checks if the files and directories added to the repository are allowed by its structure definition. If they don't, the commit is aborted.

It's active in the "pre-commit" hook.

It's configured by the following directive.

CHECK_STRUCTURE(STRUCT_DEF)

This directive enables the checking, causing the commit to abort if it doesn't comply.

The STRUCT_DEF argument specify the repository strucure with a recursive data structure consisting of one of:

ARRAY REF
An array ref specifies the contents of a directory. The referenced array must contain a pair number of elements. Each pair consists of a NAME_DEF and a STRUCT_DEF. The NAME_DEF specifies the name of the component contained in the directory and the STRUCT_DEF specifies recursively what it must be.

The NAME_DEF specifies a name in one of these ways:

STRING
A string specifies a name directly.
REGEXP
A regexp specifies the class of names that match it.
NUMBER
A number may be used as an else-clause. A positive number means that any name not yet matched by the previous pair must conform to the associated STRUCT_DEF.

A negative number means that no name will do and signals an error. In this case, if the STRUCT_DEF is a string it is used as a help message shown to the user.


If no NAME_DEF matches the component being looked for, then it is a structure violation and the commit fails.
STRING
A string must be one of 'FILE' and 'DIR', specifying what the current component must be.
NUMBER
A positive number simply tells that whatever the current component is is ok and finishes the check successfully.

A negative number tells that whatever the current component is is a structure violation and aborts the commit.

Now that we have this semi-formal definition off the way, let's try to understand it with some examples.

         my $tag_rx    = qr/^[a-z]+-\d+\.\d+$/; # e.g. project-1.0
         my $branch_rx = qr/^[a-z]+-/;   # must start with letters and hifen
         my $project_struct = [
             'META.yml'    => 'FILE',
             'Makefile.PL' => 'FILE',
             ChangeLog     => 'FILE',
             LICENSE       => 'FILE',
             MANIFEST      => 'FILE',
             README        => 'FILE',
             t => [
                 qr/\.t$/  => 'FILE',
             ],
             lib => 'DIR',
         ];
 
         CHECK_STRUCTURE(
             [
                 trunk => $project_struct,
                 branches => [
                     $branch_rx => $project_rx,
                 ],
                 tags => [
                     $tag_rx => $project_rx,
                 ],
             ],
         );

The structure's first level consists of the three usual directories: "trunk", "tags", and "branches". Anything else in this level is denied.

Below the "trunk" we allow some usual files and two directories only: "lib" and "t". Below "trunk/t" we may allow only test files with the ".t" extension and below "lib" we allow anything.

We require that each branch and tag have the same structure as the "trunk", which is made easier by the use of the $project_struct variable. Moreover, we impose some restrictions on the names of the tags and the branches.

EXPORT

check_structure(STRUCT_DEF, PATH)

SVN::Hooks::CheckStructure exports a function to allow for the verification of path structures outside the context of a Subversion hook. (It would probably be better to take this function to its own module and use that module here. We'll take care of that eventually.)

The function check_structure takes two arguments. The first is a STRUCT_DEF exactly the same as specified for the CHECK_STRUCTURE directive above. The second is a PATH to a file which will be checked against the STRUCT_DEF.

The function returns true if the check succeeds and dies with a proper message otherwise.

The funcion is intended to check paths as they're shown by the 'svn ls' command, i.e., with no leading slashes and with a trailing slash to indicate directories. The leading slash is assumed if it's missing, but the trailing slash is needed to indicate directories.

AUTHOR

Gustavo Chaves, "<gnustavo@cpan.org>"

BUGS

Please report any bugs or feature requests to "bug-svn-hooks-checkstructure at rt.cpan.org", or through the web interface at <http://rt.cpan.org/NoAuth/ReportBug.html?Queue=SVN-Hooks>. I will be notified, and then you'll automatically be notified of progress on your bug as I make changes.

SUPPORT

You can find documentation for this module with the perldoc command. 
     perldoc SVN::Hooks

You can also look for information at:

•
RT: CPAN's request tracker

<http://rt.cpan.org/NoAuth/Bugs.html?Dist=SVN-Hooks>

•
AnnoCPAN: Annotated CPAN documentation

<http://annocpan.org/dist/SVN-Hooks>

•
CPAN Ratings

<http://cpanratings.perl.org/d/SVN-Hooks>

•
Search CPAN

<http://search.cpan.org/dist/SVN-Hooks>

Copyright 2008-2009 CPqD, all rights reserved.

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