@ -1,13 +1,19 @@
package main
import (
"bytes"
"encoding/json"
"fmt"
"io"
"log"
"os"
"github.com/minio/cli"
"github.com/tinylib/msgp/msgp"
)
var xlHeader = [ 4 ] byte { 'X' , 'L' , '2' , ' ' }
func main ( ) {
app := cli . NewApp ( )
app . Copyright = "MinIO, Inc."
@ -16,21 +22,69 @@ func main() {
app . HideHelpCommand = true
app . Flags = [ ] cli . Flag {
cli . String Flag{
Usage : "path to xl.meta file " ,
Name : "f, file " ,
cli . Bool Flag{
Usage : "Print each file as a separate line without formatting " ,
Name : "ndjson " ,
} ,
}
app . Action = func ( c * cli . Context ) error {
r , err := os . Open ( c . String ( "file" ) )
if err != nil {
return err
for _ , file := range c . Args ( ) {
var r io . Reader
switch file {
case "-" :
r = os . Stdin
default :
f , err := os . Open ( file )
if err != nil {
return err
}
defer f . Close ( )
r = f
}
// Read header
var tmp [ 4 ] byte
_ , err := io . ReadFull ( r , tmp [ : ] )
if err != nil {
return err
}
if ! bytes . Equal ( tmp [ : ] , xlHeader [ : ] ) {
return fmt . Errorf ( "xlMeta: unknown XLv2 header, expected %v, got %v" , xlHeader [ : 4 ] , tmp [ : 4 ] )
}
// Skip version check for now
_ , err = io . ReadFull ( r , tmp [ : ] )
if err != nil {
return err
}
var buf bytes . Buffer
_ , err = msgp . CopyToJSON ( & buf , r )
if err != nil {
return err
}
if c . Bool ( "ndjson" ) {
fmt . Println ( buf . String ( ) )
continue
}
var msi map [ string ] interface { }
dec := json . NewDecoder ( & buf )
// Use number to preserve integers.
dec . UseNumber ( )
err = dec . Decode ( & msi )
if err != nil {
return err
}
b , err := json . MarshalIndent ( msi , "" , " " )
if err != nil {
return err
}
fmt . Println ( string ( b ) )
}
r . Seek ( 8 , io . SeekStart )
defer r . Close ( )
_ , err = msgp . CopyToJSON ( os . Stdout , r )
return err
return nil
}
err := app . Run ( os . Args )
if err != nil {
log . Fatal ( err )
}
app . Run ( os . Args )
}