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33 lines
711 B
Go
33 lines
711 B
Go
package cli
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import (
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"fmt"
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"os"
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"os/exec"
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"path/filepath"
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"github.com/urfave/cli/v2"
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)
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func use(ctx *cli.Context) (err error) {
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vname := ctx.Args().First()
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if vname == "" {
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return cli.ShowSubcommandHelp(ctx)
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}
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targetV := filepath.Join(versionsDir, vname)
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if finfo, err := os.Stat(targetV); err != nil || !finfo.IsDir() {
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return cli.Exit(fmt.Sprintf("[j] The %q version does not exist, please install it first.", vname), 1)
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}
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_ = os.Remove(goroot)
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if err = mkSymlink(targetV, goroot); err != nil {
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return cli.Exit(errstring(err), 1)
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}
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if output, err := exec.Command(filepath.Join(goroot, "bin", "java"), "--version").Output(); err == nil {
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fmt.Print(string(output))
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}
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return nil
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}
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