#!/bin/bash
# dnf-repoquery-by-srpm [dnf-options...] srpm-name...
#
# List the NEVRA of every package built from one of the given source RPMs
# (given by full name as in the SOURCERPM tag, e.g., glibc-2.31-4.fc32.src.rpm).
#
# This script's option parser is crude and assumes that every argument that
# doesn't begin with a dash is a source RPM name, so you must use the
# "--opt=val" form of dnf options, not "--opt val".  Also, if you customize
# the query format, it must not contain an embedded newline or \x01.
#
# Ideally "dnf repoquery" would support arbitrary query tags like rpm
# (i.e., "rpm -qa SOURCERPM=...") and we wouldn't need this script.
#
# ~ Matt 2020-09-02

set -e
set -x
set -o pipefail

dnf_options=()
orig_queryformat="%{name}-%{evr}.%{arch}"
grep_options=()
for arg in "$@"; do
  case "$arg" in
    (--qf=*)
      orig_queryformat="${arg#--qf=}";;
    (--queryformat=*)
      orig_queryformat="${arg#--queryformat=}";;
    (-*)
      dnf_options+=("$arg");;
    (*)
      # Hope . is the only character special in a basic regular expression that
      # occurs in package filenames.
      grep_options+=(-e $'\x01'"${arg//./\.}\$");;
  esac
done

real_queryformat="$orig_queryformat"$'\x01'"%{sourcerpm}"

dnf repoquery --queryformat="$real_queryformat" "${dnf_options[@]}" \
  | { grep "${grep_options[@]}" || true; } \
  | sed -e $'s,\x01.*$,,'