Rust interface to pkgsrc packages and the pkg_install pkgdb
A Rust interface to pkgsrc packages and the pkg_install pkgdb.
This is being developed alongside pm, a Rust implementation of a pkgsrc package manager. Anything that handles lower level pkg_install routines will be placed here.
This is a simple implementation of pkg_info(8)
that supports the default
output format, i.e. list all currently installed packages and their single-line
comment.
use pkgsrc::{MetadataEntry, PkgDB};
use std::path::Path;
fn main() -> Result<(), std::io::Error> {
let pkgdb = PkgDB::open(Path::new("/var/db/pkg"))?;
for pkg in pkgdb {
let pkg = pkg?;
println!("{:20} {}",
pkg.pkgname(),
pkg.read_metadata(MetadataEntry::Comment)?
.trim()
);
}
Ok(())
}
This project is licensed under the ISC license.
Generate list of dependency matches.
sqlite3 /var/db/pkgin/pkgin.db 'SELECT remote_deps_dewey FROM remote_deps' | sort | uniq > pkgdeps.txt
Generate list of package names
sqlite3 /var/db/pkgin/pkgin.db 'SELECT fullpkgname FROM remote_pkg' >pkgnames.txt
Implement the following algorithm in both C and Rust and compare output
while read pattern; do
while read pkg; do
pkg_match "${pattern}" "${pkg}"
printf "%s\t%s\t%s", ${pattern}, ${pkg}, $? >> outfile
done < pkgnames.txt
done < pkgdeps.txt
As an added bonus, the C version took 55 seconds to generate 158,916,879 matches, whilst the Rust version took 42 seconds.