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// Command tomlv validates TOML documents and prints each key's type.
package main
import (
"encoding/json"
"flag"
"fmt"
"log"
"os"
"path"
"strings"
"text/tabwriter"
"time"
"github.com/BurntSushi/toml"
)
var (
flagTypes = false
flagJSON = false
flagTime = false
)
func init() {
log.SetFlags(0)
flag.BoolVar(&flagTypes, "types", flagTypes, "Show the types for every key.")
flag.BoolVar(&flagTime, "time", flagTypes, "Show how long the parsing took.")
flag.BoolVar(&flagJSON, "json", flagTypes, "Output parsed document as JSON.")
flag.Usage = usage
flag.Parse()
}
func usage() {
log.Printf("Usage: %s toml-file [ toml-file ... ]\n", path.Base(os.Args[0]))
flag.PrintDefaults()
os.Exit(1)
}
func main() {
if flag.NArg() < 1 {
flag.Usage()
}
for _, f := range flag.Args() {
var tmp any
start := time.Now()
md, err := toml.DecodeFile(f, &tmp)
if err != nil {
log.Fatalf("Error in '%s': %s", f, err)
}
if flagTime {
fmt.Printf("%f\n", time.Now().Sub(start).Seconds())
}
if flagTypes {
printTypes(md)
}
if flagJSON {
enc := json.NewEncoder(os.Stdout)
enc.SetEscapeHTML(false)
enc.SetIndent("", " ")
enc.Encode(tmp)
}
}
}
func printTypes(md toml.MetaData) {
tabw := tabwriter.NewWriter(os.Stdout, 0, 0, 2, ' ', 0)
for _, key := range md.Keys() {
fmt.Fprintf(tabw, "%s%s\t%s\n",
strings.Repeat(" ", len(key)-1), key, md.Type(key...))
}
tabw.Flush()
}
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