path: root/ethutil/path.go

package ethutil

import (
    "io/ioutil"
    "os"
    "os/user"
    "strings"
)

func ExpandHomePath(p string) (path string) {
    path = p

    // Check in case of paths like "/something/~/something/"
    if path[:2] == "~/" {
        usr, _ := user.Current()
        dir := usr.HomeDir

        path = strings.Replace(p, "~", dir, 1)
    }

    return
}

func FileExist(filePath string) bool {
    _, err := os.Stat(filePath)
    if err != nil && os.IsNotExist(err) {
        return false
    }

    return true
}

func ReadAllFile(filePath string) (string, error) {
    file, err := os.Open(filePath)
    if err != nil {
        return "", err
    }

    data, err := ioutil.ReadAll(file)
    if err != nil {
        return "", err
    }

    return string(data), nil
}

func WriteFile(filePath string, content []byte) error {
    fh, err := os.OpenFile(filePath, os.O_TRUNC|os.O_RDWR|os.O_CREATE, os.ModePerm)
    if err != nil {
        return err
    }
    defer fh.Close()

    _, err = fh.Write(content)
    if err != nil {
        return err
    }

    return nil
}