github.com/klaytn/klaytn@v1.10.2/common/path.go (about)

     1  // Modifications Copyright 2018 The klaytn Authors
     2  // Copyright 2015 The go-ethereum Authors
     3  // This file is part of the go-ethereum library.
     4  //
     5  // The go-ethereum library is free software: you can redistribute it and/or modify
     6  // it under the terms of the GNU Lesser General Public License as published by
     7  // the Free Software Foundation, either version 3 of the License, or
     8  // (at your option) any later version.
     9  //
    10  // The go-ethereum library is distributed in the hope that it will be useful,
    11  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    12  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    13  // GNU Lesser General Public License for more details.
    14  //
    15  // You should have received a copy of the GNU Lesser General Public License
    16  // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
    17  //
    18  // This file is derived from common/path.go (2018/06/04).
    19  // Modified and improved for the klaytn development.
    20  
    21  package common
    22  
    23  import (
    24  	"fmt"
    25  	"os"
    26  	"path/filepath"
    27  	"runtime"
    28  )
    29  
    30  // MakeName creates a node name that follows the Klaytn convention
    31  // for such names. It adds the operation system name and Go runtime version
    32  // the name.
    33  func MakeName(name, version string) string {
    34  	return fmt.Sprintf("%s/v%s/%s/%s", name, version, runtime.GOOS, runtime.Version())
    35  }
    36  
    37  // FileExist checks if a file exists at filePath.
    38  func FileExist(filePath string) bool {
    39  	_, err := os.Stat(filePath)
    40  	if err != nil && os.IsNotExist(err) {
    41  		return false
    42  	}
    43  
    44  	return true
    45  }
    46  
    47  // AbsolutePath returns datadir + filename, or filename if it is absolute.
    48  func AbsolutePath(datadir string, filename string) string {
    49  	if filepath.IsAbs(filename) {
    50  		return filename
    51  	}
    52  	return filepath.Join(datadir, filename)
    53  }