/*
Rename <root>\node_modules\folder to <root>\node_modules\npm
Copy <root>\node_modules\npm\bin\ npm and npm.cmd to <root>\
*/
func (this *NPMange) Install() error {
if err := os.Rename(this.modules+util.DIVIDE+this.ziproot, this.npmpath); err != nil {
P(ERROR, "rename fail, Error: %v\n", err.Error())
return err
} else {
files := [2]string{this.command1, this.command2}
for _, v := range files {
if err := util.Copy(this.npmbin, this.root, v); err != nil {
P(ERROR, "copy %v to %v faild, Error: %v \n", this.npmbin, this.root)
return err
}
}
}
return nil
}
/**
* rootPath : node.exe global path, e.g. x:\xxx\xx\xx\
*
* global : global node.exe version num, e.g. x.xx.xx-x86 ( only rumtime.GOARCH == "amd64", suffix include: 'x86' and 'x64' )
* globalPath : global node.exe version path, e.g. x:\xxx\xx\xx\x.xx.xx-x86
*
* newer : newer node.exe version num, e.g. x.xx.xx
* newerPath : newer node.exe version path, e.g. <rootPath>\x.xx.xx\
*
*/
func Use(newer string) bool {
// try catch
defer func() {
if err := recover(); err != nil {
msg := fmt.Sprintf("'gnvm use %v' an error has occurred. please check. \nError: ", newer)
Error(ERROR, msg, err)
os.Exit(0)
}
}()
// get true folder, e.g. folder is latest return x.xx.xx
util.FormatLatVer(&newer, config.GetConfig(config.LATEST_VERSION), true)
if newer == util.UNKNOWN {
P(WARING, "current latest is %v, please usage '%v' first. See '%v'.\n", newer, "gnvm update latest", "gnvm help update")
return false
}
// set newerPath and verify newerPath is exist?
newerPath := rootPath + newer
if _, err := util.GetNodeVer(newerPath); err != nil {
P(WARING, "%v folder is not exist %v, use '%v' get local Node.js version list. See '%v'.\n", newer, "node.exe", "gnvm ls", "gnvm help ls")
return false
}
// get <root>/node.exe version, when exist, get full version, e.g. x.xx.xx-x86
global, err := util.GetNodeVer(rootPath)
if err != nil {
P(WARING, "not found %v Node.js version.\n", "global")
} else {
if bit, err := util.Arch(rootPath); err == nil {
if bit == "x86" && runtime.GOARCH == "amd64" {
global += "-" + bit
}
}
}
// check newer is global
if newer == global {
P(WARING, "current Node.js version is %v, not re-use. See '%v'.\n", newer, "gnvm node-version")
return false
}
// set globalPath
globalPath := rootPath + global
// <root>/global is exist? when not exist, create global folder
if !util.IsDirExist(globalPath) {
if err := os.Mkdir(globalPath, 0777); err != nil {
P(ERROR, "create %v folder Error: %v.\n", global, err.Error())
return false
}
}
// backup copy <root>/node.exe to <root>/global/node.exe
if global != "" {
if err := util.Copy(rootPath, globalPath, util.NODE); err != nil {
P(ERROR, "copy %v to %v folder Error: %v.\n", rootPath, globalPath, err.Error())
return false
}
}
// copy <root>/newer/node.exe to <root>/node.exe
if err := util.Copy(newerPath, rootPath, util.NODE); err != nil {
P(ERROR, "copy %v to %v folder Error: %v.\n", newerPath, rootPath, err.Error())
return false
}
P(DEFAULT, "Set success, global Node.js version is %v.\n", newer)
return true
}