init urpm-wrb script

Makefile

@@ -34,6 +34,7 @@ install:
 	for d in $(SUBDIRS); do make DESTDIR=$(DESTDIR) -C $$d install; [ $$? = 0 ] || exit 1; done
 
 	install -m 644 urpmmisc.py $(DESTDIR)/$(PKGDIR)/urpmmisc.py;
+	install -m 755 urpm-wrb.sh $(DESTDIR)/usr/bin/urpm-wrb
 
 
 	for d in `python localizer.py --list`; do\

urpm-wrb.sh

@@ -0,0 +1,49 @@
+#!/usr/bin/env bash
+# urpm-wrb: what to rebuild after ABI breakage or major so version bump
+# Authors:
+#  - Mikhail Novosyolov <m.novosyolov@rosalinux.ru>, 2019
+
+echo_help(){
+	echo "
+urpm-wrb helps to find names of source packages which have to be rebuilt e.g. after ABI breakage or major so version bump.
+
+Usage:
+  urpm-wrb <list of packages>
+Examples:
+  urpm-wrb lib64krb5_3
+  urpm-wrb lib64krb5_3 lib64kdb5_8 lib64kadm5srv_mit10
+"
+exit "$1"
+}
+
+TMP="$(mktemp)"
+trap 'rm -rf "$TMP"' EXIT INT QUIT TERM
+
+_main_method2(){
+	while read -r line
+	do
+		while read -r line2
+		do
+			urpmq --sourcerpm "$line2" | awk -F ': ' '{print $2}' | rev | cut -d '-' -f 3- | rev
+		done < <(urpmq --whatrequires "$line")
+	done < <(echo "$@" | sed -e "s, ,\\n,g")
+}
+
+_main(){
+	# First try the fastest method, but it will not work if either of packages from the list
+	# does not have reverse dependencies
+	urpmq --whatrequires --sourcerpm "$@" | awk -F ': ' '{print $2}' | rev | cut -d '-' -f 3- | rev | sort -u > "$TMP"
+	method1_rc="${PIPESTATUS[0]}"
+	if [ "$method1_rc" != 1 ]
+		then if [ "$(cat "$TMP" | wc -l)" -gt 0 ]; then cat "$TMP"; return; fi
+		else exit 1
+	fi
+	
+	# If nothing was found and if there were no errors, try a longer method
+	_main_method2 "$@" | sort -u
+}
+
+case "$1" in
+	-h | --help | -help ) echo_help 0 ;;
+	* ) if [ -n "$1" ]; then _main "$@"; else echo_help 2 ; fi ;;
+esac