code.vegaprotocol.io/vega@v0.79.0/cmd/vegawallet/commands/printer/json.go (about)

     1  // Copyright (C) 2023 Gobalsky Labs Limited
     2  //
     3  // This program is free software: you can redistribute it and/or modify
     4  // it under the terms of the GNU Affero General Public License as
     5  // published by the Free Software Foundation, either version 3 of the
     6  // License, or (at your option) any later version.
     7  //
     8  // This program is distributed in the hope that it will be useful,
     9  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    10  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    11  // GNU Affero General Public License for more details.
    12  //
    13  // You should have received a copy of the GNU Affero General Public License
    14  // along with this program.  If not, see <http://www.gnu.org/licenses/>.
    15  
    16  package printer
    17  
    18  import (
    19  	"encoding/json"
    20  	"fmt"
    21  	"io"
    22  )
    23  
    24  func FprintJSON(w io.Writer, data interface{}) error {
    25  	buf, err := json.Marshal(data)
    26  	if err != nil {
    27  		return fmt.Errorf("unable to marshal message: %w", err)
    28  	}
    29  
    30  	if _, err = fmt.Fprintf(w, "%v\n", string(buf)); err != nil {
    31  		return fmt.Errorf("couldn't print data to %v: %w", w, err)
    32  	}
    33  
    34  	return nil
    35  }