epm-simulate: rewrite check yum result with store_output

bin/epm-simulate

@@ -31,9 +31,22 @@ __use_yum_assumeno()
     a= yum --help 2>&1 | grep -q -- "--assumeno"
 }
 
+
+__check_yum_result()
+{
+    grep "^No package" $1 && return 1
+    grep "^Complete!" $1 && return 0
+    grep "^Exiting on user Command" $1 && return 0
+    grep "^Exiting on user command" $1 && return 0
+    # return default result by default
+    return $2
+}
+
+
 _epm_do_simulate()
 {
     local CMD
+    local RES=0
     local filenames="$*"
 
     case $PMTYPE in
@@ -42,20 +55,15 @@ _epm_do_simulate()
     		;;
     	yum-rpm)
     		if __use_yum_assumeno ; then
-    			LC_ALL=C sudocmd yum --assumeno install $filenames
-    			# FIXME: check only error output
-    			LC_ALL=C sudocmd yum --assumeno install $filenames 2>&1 | grep "^No package" && return 1
-    			LC_ALL=C sudocmd yum --assumeno install $filenames 2>&1 | grep "^Complete!" && return 0
-    			LC_ALL=C sudocmd yum --assumeno install $filenames 2>&1 | grep "^Exiting on user Command" && return 0
-    			LC_ALL=C sudocmd yum --assumeno install $filenames >/dev/null 2>&1 || return
+    			LC_ALL=C store_output sudocmd yum --assumeno install $filenames
+    			__check_yum_result $RC_STDOUT $?
     		else
-    			LC_ALL=C echo n | sudocmd yum install $filenames
-    			# FIXME: check only error output
-    			LC_ALL=C echo n | sudocmd yum install $filenames 2>&1 | grep "^No package" && return 1
-    			LC_ALL=C echo n | sudocmd yum install $filenames 2>&1 | grep "^Complete!" && return 0
-    			LC_ALL=C echo n | sudocmd yum install $filenames >/dev/null 2>&1 || return
+    			LC_ALL=C echo n | store_output sudocmd yum install $filenames
+    			__check_yum_result $RC_STDOUT $?
     		fi
-    		return 0 ;;
+    		RES=$?
+    		clean_store_output
+    		return $RES ;;
     	urpm-rpm)
     		CMD="urpmi --test --auto"
     		;;