mfer/internal/cli/mfer.go

151 lines
3.4 KiB
Go

package cli
import (
"fmt"
"os"
"time"
"github.com/urfave/cli/v2"
"sneak.berlin/go/mfer/internal/log"
)
type CLIApp struct {
appname string
version string
gitrev string
startupTime time.Time
exitCode int
app *cli.App
}
const banner = ` ___ ___ ___ ___
/__/\ / /\ / /\ / /\
| |::\ / /:/_ / /:/_ / /::\
| |:|:\ / /:/ /\ / /:/ /\ / /:/\:\
__|__|:|\:\ / /:/ /:/ / /:/ /:/_ / /:/~/:/
/__/::::| \:\ /__/:/ /:/ /__/:/ /:/ /\ /__/:/ /:/___
\ \:\~~\__\/ \ \:\/:/ \ \:\/:/ /:/ \ \:\/:::::/
\ \:\ \ \::/ \ \::/ /:/ \ \::/~~~~
\ \:\ \ \:\ \ \:\/:/ \ \:\
\ \:\ \ \:\ \ \::/ \ \:\
\__\/ \__\/ \__\/ \__\/`
func (mfa *CLIApp) printBanner() {
fmt.Println(banner)
}
func (mfa *CLIApp) VersionString() string {
return fmt.Sprintf("%s (%s)", mfa.version, mfa.gitrev)
}
func (mfa *CLIApp) setVerbosity(v int) {
_, present := os.LookupEnv("MFER_DEBUG")
if present {
log.EnableDebugLogging()
} else {
log.SetLevelFromVerbosity(v)
}
}
func (mfa *CLIApp) run() {
mfa.startupTime = time.Now()
if NO_COLOR {
// shoutout to rob pike who thinks it's juvenile
log.DisableStyling()
}
log.Init()
var verbosity int
mfa.app = &cli.App{
Name: mfa.appname,
Usage: "Manifest generator",
Version: mfa.VersionString(),
EnableBashCompletion: true,
Flags: []cli.Flag{
&cli.BoolFlag{
Name: "verbose",
Usage: "Verbosity level",
Aliases: []string{"v"},
Count: &verbosity,
},
&cli.BoolFlag{
Name: "quiet",
Usage: "don't produce output except on error",
Aliases: []string{"q"},
},
},
Commands: []*cli.Command{
{
Name: "generate",
Aliases: []string{"gen"},
Usage: "Generate manifest file",
Action: func(c *cli.Context) error {
if !c.Bool("quiet") {
mfa.printBanner()
}
mfa.setVerbosity(verbosity)
return mfa.generateManifestOperation(c)
},
Flags: []cli.Flag{
&cli.BoolFlag{
Name: "FollowSymLinks",
Aliases: []string{"follow-symlinks"},
Usage: "Resolve encountered symlinks",
},
&cli.BoolFlag{
Name: "IgnoreDotfiles",
Aliases: []string{"ignore-dotfiles"},
Usage: "Ignore any dot (hidden) files encountered",
},
&cli.StringFlag{
Name: "output",
Value: "./index.mf",
Aliases: []string{"o"},
Usage: "Specify output filename",
},
},
},
{
Name: "check",
Usage: "Validate files using manifest file",
Action: func(c *cli.Context) error {
if !c.Bool("quiet") {
mfa.printBanner()
}
mfa.setVerbosity(verbosity)
return mfa.checkManifestOperation(c)
},
},
{
Name: "version",
Usage: "Show version",
Action: func(c *cli.Context) error {
fmt.Printf("%s\n", mfa.VersionString())
return nil
},
},
{
Name: "fetch",
Usage: "fetch manifest and referenced files",
Action: func(c *cli.Context) error {
if !c.Bool("quiet") {
mfa.printBanner()
}
mfa.setVerbosity(verbosity)
return mfa.fetchManifestOperation(c)
},
},
},
}
mfa.app.HideVersion = true
err := mfa.app.Run(os.Args)
if err != nil {
mfa.exitCode = 1
log.WithError(err).Debugf("exiting")
}
}