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mycorrhiza/flag.go

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package main
import (
_ "embed"
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"flag"
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"fmt"
"github.com/bouncepaw/mycorrhiza/cfg"
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"log"
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"os"
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"path/filepath"
)
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// CLI options are read and parsed here.
//go:embed assets/config.ini
var defaultConfig []byte
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var printExampleConfig bool
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func init() {
flag.StringVar(&cfg.ConfigFilePath, "config-path", "", "Path to a configuration file. Leave empty if you don't want to use it.")
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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.")
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flag.Usage = printHelp
}
// printHelp prints the help message.
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func printHelp() {
_, err := fmt.Fprintf(
flag.CommandLine.Output(),
"Usage of %s:\n",
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os.Args[0],
)
if err != nil {
log.Fatal(err)
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}
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flag.PrintDefaults()
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}
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// parseCliArgs parses CLI options and sets several important global variables. Call it early.
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func parseCliArgs() {
flag.Parse()
args := flag.Args()
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if printExampleConfig {
os.Stdout.Write(defaultConfig)
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os.Exit(0)
}
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if len(args) == 0 {
log.Fatal("Error: pass a wiki directory")
}
wikiDir, err := filepath.Abs(args[0])
cfg.WikiGitDir = wikiDir
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if err != nil {
log.Fatal(err)
}
}