script to count the number of packages in a yum repo

repocount.sh

#!/usr/bin/bash

set -eou pipefail

# TODO: loop multiple
if [[ $# -ne 1 ]]; then
    echo "usage: $(basename $0) <baseurl>"
    exit 1
fi

repo="$1"
repomd="${repo}repodata/repomd.xml"
primary_href=$(curl -s $repomd | xq -x '/repomd/data[@type="primary"]/location/@href')

case $primary_href in
    *.xml.gz) compcat=zcat;;
    *.xml.xz) compcat=xzcat;;
esac

primary="$repo/$primary_href"
packages=$(curl -s $primary | $compcat | xq -x '/metadata/@packages')
echo "$packages packages in $repo"