github.com/amazechain/amc@v0.1.3/internal/avm/common/path.go (about) 1 // Copyright 2023 The AmazeChain Authors 2 // This file is part of the AmazeChain library. 3 // 4 // The AmazeChain library is free software: you can redistribute it and/or modify 5 // it under the terms of the GNU Lesser General Public License as published by 6 // the Free Software Foundation, either version 3 of the License, or 7 // (at your option) any later version. 8 // 9 // The AmazeChain library is distributed in the hope that it will be useful, 10 // but WITHOUT ANY WARRANTY; without even the implied warranty of 11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 // GNU Lesser General Public License for more details. 13 // 14 // You should have received a copy of the GNU Lesser General Public License 15 // along with the AmazeChain library. If not, see <http://www.gnu.org/licenses/>. 16 17 package common 18 19 import ( 20 "fmt" 21 "os" 22 "path/filepath" 23 "runtime" 24 ) 25 26 // MakeName creates a node name that follows the ethereum convention 27 // for such names. It adds the operation system name and Go runtime version 28 // the name. 29 func MakeName(name, version string) string { 30 return fmt.Sprintf("%s/v%s/%s/%s", name, version, runtime.GOOS, runtime.Version()) 31 } 32 33 // FileExist checks if a file exists at filePath. 34 func FileExist(filePath string) bool { 35 _, err := os.Stat(filePath) 36 if err != nil && os.IsNotExist(err) { 37 return false 38 } 39 40 return true 41 } 42 43 // AbsolutePath returns datadir + filename, or filename if it is absolute. 44 func AbsolutePath(datadir string, filename string) string { 45 if filepath.IsAbs(filename) { 46 return filename 47 } 48 return filepath.Join(datadir, filename) 49 }