get_source

#!/bin/sh -eu

# Copyright 2017-2018 Yury Gribov
# 
# Use of this source code is governed by MIT license that can be
# found in the LICENSE.txt file.

# Usage: get_source_pkg PKG...
# Map Debian packages to their source packages.

REL=$(lsb_release -cs)

is_good_package() {
  # Skip packages which are not present in our distro
  if apt-cache madison $1 | grep -q 'Unable to locate package'; then
    return 1
  fi

  # Skip packages for which sources are missing in Trusty
  if ! apt-cache madison $1 | grep -q $REL; then
    return 1
  fi

#  # Skip virtual packages
#  if apt-cache show --quiet=0 $1/$REL 2>&1 | grep -q 'No packages found'; then
#    return 1
#  fi

  return 0
}

for p in $@; do
  src=$(apt-cache showsrc $p 2>/dev/null | grep Package: | awk '{print $2}' | head -1)
  if test -z "$src"; then
    src=$p
  fi

  if is_good_package $src; then
    echo $src
  fi
done