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package common
import (
"fmt"
"math/big"
"os"
"os/user"
"path"
"path/filepath"
"runtime"
"time"
"github.com/kardianos/osext"
)
// MakeName creates a node name that follows the ethereum convention
// for such names. It adds the operation system name and Go runtime version
// the name.
func MakeName(name, version string) string {
return fmt.Sprintf("%s/v%s/%s/%s", name, version, runtime.GOOS, runtime.Version())
}
func DefaultAssetPath() string {
var assetPath string
pwd, _ := os.Getwd()
srcdir := path.Join(os.Getenv("GOPATH"), "src", "github.com", "ethereum", "go-ethereum", "cmd", "mist")
// If the current working directory is the go-ethereum dir
// assume a debug build and use the source directory as
// asset directory.
if pwd == srcdir {
assetPath = path.Join(pwd, "assets")
} else {
switch runtime.GOOS {
case "darwin":
// Get Binary Directory
exedir, _ := osext.ExecutableFolder()
assetPath = filepath.Join(exedir, "../Resources")
case "linux":
assetPath = "/usr/share/mist"
case "windows":
assetPath = "./assets"
default:
assetPath = "."
}
}
// Check if the assetPath exists. If not, try the source directory
// This happens when binary is run from outside cmd/mist directory
if _, err := os.Stat(assetPath); os.IsNotExist(err) {
assetPath = path.Join(srcdir, "assets")
}
return assetPath
}
func DefaultDataDir() string {
usr, _ := user.Current()
if runtime.GOOS == "darwin" {
return path.Join(usr.HomeDir, "Library/Ethereum")
} else if runtime.GOOS == "windows" {
return path.Join(usr.HomeDir, "AppData/Roaming/Ethereum")
} else {
return path.Join(usr.HomeDir, ".ethereum")
}
}
func IsWindows() bool {
return runtime.GOOS == "windows"
}
func WindonizePath(path string) string {
if string(path[0]) == "/" && IsWindows() {
path = path[1:]
}
return path
}
// Common big integers often used
var (
Big1 = big.NewInt(1)
Big2 = big.NewInt(2)
Big3 = big.NewInt(3)
Big0 = big.NewInt(0)
BigTrue = Big1
BigFalse = Big0
Big32 = big.NewInt(32)
Big256 = big.NewInt(0xff)
Big257 = big.NewInt(257)
)
func Bench(pre string, cb func()) {
start := time.Now()
cb()
fmt.Println(pre, ": took:", time.Since(start))
}
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