[SOLVED] How to split title of slackware package?

Himilhil · 07-05-2009, 08:37 AM

I need to get in my python script a name and a version of slackware package from it title. I thought that name, version, architecture etc. in title of package is separated with dashes. But after i had found packages with title like "network-scripts-12.2-noarch-4". In this title dash is in the middle of package name ("network-scripts"). I don't know how could i get name and version in this case algorithmically. Is there any algorithm of getting name and version from slackware package title?

H_TeXMeX_H · 07-05-2009, 09:02 AM

The algorithm is usually this:

1) reverse the name of the package
2) with delimiter '-', fields are:
field 1 is the release
field 2 is the architecture
field 3 is the version
and the rest of the fields is the name
3) reverse the name again

In bash it would be:

Code:

bash-3.1$ echo 'xorg-server-xnest-1.4.0.90-x86_64_slamd64-1' | rev | cut -d - -f 1 | rev
1
bash-3.1$ echo 'xorg-server-xnest-1.4.0.90-x86_64_slamd64-1' | rev | cut -d - -f 2 | rev
x86_64_slamd64
bash-3.1$ echo 'xorg-server-xnest-1.4.0.90-x86_64_slamd64-1' | rev | cut -d - -f 3 | rev
1.4.0.90
bash-3.1$ echo 'xorg-server-xnest-1.4.0.90-x86_64_slamd64-1' | rev | cut -d - -f 1-3 --complement | rev
xorg-server-xnest

bgeddy · 07-05-2009, 11:45 AM

Quote:

Is there any algorithm of getting name and version from slackware package title?

You already have this in a number of bash scripts i.e. installpkg, removepkg, upgradepkg - namely pkgtools. Just have a look at the workings of the "package_name" bash function in these scripts.