Puppet

Before OpenBSD added “flavors”, it used to be the case that the last hyphen separated the package name from the version number; the name could contain embedded hyphens but the version could not. I don’t know whether they allow multiple flavours to be appended, but I’ll assume that they do, and that appended flavours can be differentiated from version numbers by whether or not they begin with a digit; so, I assume that, of all the hyphen-separated components, the last one that begins with a digit is the version number. I think this regular expression should store the name, version, and flavour (with hyphen prefix), in $1, $2, and $3:

^(.*)-(\d[^-]*)((?:-\D[^-]*)*)$

FYI: The “official” documentation for OpenBSD package names is the man page OpenBSD::PackageName(3p), which follows the more general packages specification in packages-specs(7). The reference implementation to look at would be the functions splitname() or from_string() in /usr/libdata/perl5/OpenBSD/PackageName.pm.

from_string() uses the following Perl regular expression: /^{(.?)-(\d.)$/o} (/o has no semantic meaning relevant to the discussion.) This splits the package name into a “stem” and a “rest”, which is the version number and all flavors (yes, there can be multiple). The first hyphen separates the version number from the first flavor, additional hyphens separate the flavors from each other.

When forming a package name from the raw constituents $stem, $version and @flavors, the flavors are sorted in alphabetical order and then joined, together with the stem and version, using a single hypen as the separator between each constituent.

I hope that helps someone.

Cheers for working on it, Uwe

Uwe Stuehler wrote:

FYI: The “official” documentation for OpenBSD package names is the man page OpenBSD::PackageName(3p)

Thanks. I don’t use OpenBSD, and failed to find that in a web search.

from_string() uses the following Perl regular expression: /^{(.?)-(\d.)$/o}

This regular expression treats the first hyphen-separated component that begins with a digit as the version number; the regular expression that I gave in comment 4 above treats the last such component as the version number. The difference becomes apparent only when a flavour name begins with a digit, or when a portion of the base package name begins with a digit, and either of those seems unlikely to happen, but changing “.” to “.?” near the beginning of the regular expression in comment 4 would make it consistent with the documented behaviour of from_string().

Sorry been busy- just saw this, will test as soon as I can.

In 0.25.x as commit:ad386c2e5ce45ece3a7ac0965d155ab23fe32e23.