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#!/usr/bin/env bash

cmd=${0##*/}
usage() {
	echo "Usage: $cmd [-h] pkgname [pkgver]"
	echo
	echo "Detect if a given package version is already in repos"
	echo "Assuming you want greater or equal."
	echo
	echo "Example usage: $cmd 'pcre' '20'"
	echo
	echo "Exit status:"
	echo "  0: The package is built"
	echo "  1: The package has not built"
	echo " >1: There was an error"
}

while getopts 'h' arg; do
	case $arg in
		h) usage; exit 0 ;;
		*) usage >&2; exit 2 ;;
	esac
done
if [[ $# -ne 1 ]] && [[ $# -ne 2 ]]; then
	usage >&2
	exit 2
fi

pkg=${1}
ver=${2:-0}
pver=$(LC_ALL=C pacman -Sddp --print-format '%v' "${pkg}" 2>/dev/null)

# if pacman fails or returns nothing
r=$?

result=$(vercmp "${pver}" "${ver}")
# result:
# -1 : pver < ver
#  0 : pver = ver
#  1 : pver > ver

if [[ $result -ge 0 ]] && [[ $r -eq 0 ]]; then
	exit 0
else
	exit 1
fi