From 09744748af07f78eacd5a49796216a7fc16845ae Mon Sep 17 00:00:00 2001 From: Stefan Majewsky Date: Tue, 4 Apr 2017 01:22:17 +0200 Subject: read and write index file --- util.go | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 util.go (limited to 'util.go') diff --git a/util.go b/util.go new file mode 100644 index 0000000..09f93be --- /dev/null +++ b/util.go @@ -0,0 +1,41 @@ +/******************************************************************************* +* +* Copyright 2017 Stefan Majewsky +* +* This program is free software: you can redistribute it and/or modify it under +* the terms of the GNU General Public License as published by the Free Software +* Foundation, either version 3 of the License, or (at your option) any later +* version. +* +* This program is distributed in the hope that it will be useful, but WITHOUT ANY +* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR +* A PARTICULAR PURPOSE. See the GNU General Public License for more details. +* +* You should have received a copy of the GNU General Public License along with +* this program. If not, see . +* +*******************************************************************************/ + +package main + +import ( + "fmt" + "os" +) + +//ShowError prints the given error on stderr if it is non-nil, or returns false otherwise. +func ShowError(err error) bool { + if err == nil { + return false + } + fmt.Fprintf(os.Stderr, "ERROR: %s\n", err.Error()) + return true +} + +//FatalIfError prints the given error on stderr and exits with an error code. +func FatalIfError(err error) { + if err != nil { + fmt.Fprintf(os.Stderr, "FATAL: %s\n", err.Error()) + os.Exit(255) + } +} -- cgit v1.3.1