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mycorrhiza/flag.go

58 lines
1.2 KiB
Go

package main
import (
_ "embed"
"flag"
"fmt"
"log"
"os"
"path/filepath"
"github.com/bouncepaw/mycorrhiza/cfg"
)
// CLI options are read and parsed here.
//go:embed assets/config.ini
var defaultConfig []byte
var printExampleConfig bool
func init() {
flag.StringVar(&cfg.HTTPPort, "port", "", "Listen on another port. This option also updates the config file for your convenience.")
flag.BoolVar(&printExampleConfig, "print-example-config", false, "If true, print an example configuration file contents and exit. You can save the output to a file and base your own configuration on it.")
flag.Usage = printHelp
}
// printHelp prints the help message.
func printHelp() {
fmt.Fprintf(
flag.CommandLine.Output(),
"Usage: %s WIKI_PATH\n",
os.Args[0],
)
flag.PrintDefaults()
}
// parseCliArgs parses CLI options and sets several important global variables. Call it early.
func parseCliArgs() {
flag.Parse()
args := flag.Args()
if printExampleConfig {
os.Stdout.Write(defaultConfig)
os.Exit(0)
}
if len(args) == 0 {
log.Fatal("Error: pass a wiki directory")
}
wikiDir, err := filepath.Abs(args[0])
if err != nil {
log.Fatal(err)
}
cfg.WikiDir = wikiDir
}