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j/cli/cli.go

164 lines
3.9 KiB
Go

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package cli
import (
"fmt"
"io"
"os"
"os/exec"
"path/filepath"
"runtime"
"sort"
"strings"
"time"
"github.com/Masterminds/semver"
"github.com/fatih/color"
"github.com/forget-the-bright/j/internal/build"
"github.com/urfave/cli/v2"
)
var (
ghomeDir string
downloadsDir string
versionsDir string
goroot string
)
func init() {
/* ghomeDir, _ = os.Getwd()
fmt.Println(ghomeDir)
goroot = filepath.Join(ghomeDir, "java")
fmt.Println(goroot)
downloadsDir = filepath.Join(ghomeDir, "downloads")
os.MkdirAll(downloadsDir, 0755)
versionsDir = filepath.Join(ghomeDir, "versions")
os.MkdirAll(versionsDir, 0755) */
cli.AppHelpTemplate = fmt.Sprintf(`NAME:
{{.Name}}{{if .Usage}} - {{.Usage}}{{end}}
USAGE:
{{if .UsageText}}{{.UsageText}}{{else}}{{.HelpName}} {{if .Commands}} command{{end}} {{if .ArgsUsage}}{{.ArgsUsage}}{{else}}[arguments...]{{end}}{{end}}{{if .Version}}{{if not .HideVersion}}
VERSION:
%s{{end}}{{end}}{{if .Description}}
DESCRIPTION:
{{.Description}}{{end}}{{if len .Authors}}
AUTHOR{{with $length := len .Authors}}{{if ne 1 $length}}S{{end}}{{end}}:
{{range $index, $author := .Authors}}{{if $index}}
{{end}}{{$author}}{{end}}{{end}}{{if .VisibleCommands}}
COMMANDS:{{range .VisibleCategories}}{{if .Name}}
{{.Name}}:{{end}}{{range .VisibleCommands}}
{{join .Names ", "}}{{"\t"}}{{.Usage}}{{end}}{{end}}{{end}}{{if .VisibleFlags}}
GLOBAL OPTIONS:
{{range $index, $option := .VisibleFlags}}{{if $index}}
{{end}}{{$option}}{{end}}{{end}}{{if .Copyright}}
COPYRIGHT:
{{.Copyright}}{{end}}
`, build.ShortVersion)
}
// Run 运行g命令行
func Run() {
app := cli.NewApp()
app.Name = "j"
app.Usage = "JAVA Version Manager"
app.Version = build.Version()
app.Copyright = fmt.Sprintf("Copyright (c) 2019-%d, forget-the-bright. All rights reserved.", time.Now().Year())
app.Authors = []*cli.Author{
{Name: "wh", Email: "helloworldwh@163.com"},
}
app.Before = func(ctx *cli.Context) (err error) {
ghomeDir = ghome()
goroot = filepath.Join(ghomeDir, "java")
downloadsDir = filepath.Join(ghomeDir, "downloads")
if err = os.MkdirAll(downloadsDir, 0755); err != nil {
return err
}
versionsDir = filepath.Join(ghomeDir, "versions")
return os.MkdirAll(versionsDir, 0755)
}
app.Commands = commands
if err := app.Run(os.Args); err != nil {
os.Exit(1)
}
}
const (
homeEnv = "J_HOME"
mirrorEnv = "J_MIRROR"
)
// ghome 返回g根目录
func ghome() (dir string) {
//fmt.Println(os.Getenv(homeEnv))
if dir = os.Getenv(homeEnv); dir != "" {
return dir
}
homeDir, _ := os.UserHomeDir()
return filepath.Join(homeDir, ".j")
/* path, _ := os.Getwd()
return path */
}
// inuse 返回当前的go版本号
func inuse(goroot string) (version string) {
p, _ := os.Readlink(goroot)
return filepath.Base(p)
}
// render 渲染go版本列表
func render(curV string, items []*semver.Version, out io.Writer) {
sort.Sort(semver.Collection(items))
for i := range items {
fields := strings.SplitN(items[i].String(), "-", 2)
v := strings.TrimSuffix(strings.TrimSuffix(fields[0], ".0"), ".0")
if len(fields) > 1 {
v += fields[1]
}
if v == curV {
color.New(color.FgGreen).Fprintf(out, "* %s\n", v)
} else {
fmt.Fprintf(out, " %s\n", v)
}
}
}
// errstring 返回统一格式的错误信息
func errstring(err error) string {
if err == nil {
return ""
}
return wrapstring(err.Error())
}
func wrapstring(str string) string {
if str == "" {
return str
}
words := strings.Fields(str)
if len(words) > 0 {
words[0] = strings.Title(words[0])
}
return fmt.Sprintf("[g] %s", strings.Join(words, " "))
}
func mkSymlink(oldname, newname string) (err error) {
if runtime.GOOS == "windows" {
// Windows 10下无特权用户无法创建符号链接优先调用mklink /j创建'目录联接'
if err = exec.Command("cmd", "/c", "mklink", "/j", newname, oldname).Run(); err == nil {
return nil
}
}
return os.Symlink(oldname, newname)
}