github.com/minio/mc@v0.0.0-20240503112107-b471de8d1882/cmd/print.go (about)

     1  // Copyright (c) 2015-2022 MinIO, Inc.
     2  //
     3  // This file is part of MinIO Object Storage stack
     4  //
     5  // This program is free software: you can redistribute it and/or modify
     6  // it under the terms of the GNU Affero General Public License as published by
     7  // the Free Software Foundation, either version 3 of the License, or
     8  // (at your option) any later version.
     9  //
    10  // This program is distributed in the hope that it will be useful
    11  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    12  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    13  // GNU Affero General Public License for more details.
    14  //
    15  // You should have received a copy of the GNU Affero General Public License
    16  // along with this program.  If not, see <http://www.gnu.org/licenses/>.
    17  
    18  package cmd
    19  
    20  import (
    21  	"bytes"
    22  	"encoding/json"
    23  	"strings"
    24  
    25  	"github.com/minio/pkg/v2/console"
    26  )
    27  
    28  // message interface for all structured messages implementing JSON(), String() methods.
    29  type message interface {
    30  	JSON() string
    31  	String() string
    32  }
    33  
    34  // printMsg prints message string or JSON structure depending on the type of output console.
    35  func printMsg(msg message) {
    36  	var msgStr string
    37  	if !globalJSON {
    38  		msgStr = msg.String()
    39  	} else {
    40  		msgStr = msg.JSON()
    41  		if globalJSONLine && strings.ContainsRune(msgStr, '\n') {
    42  			// Reformat.
    43  			var dst bytes.Buffer
    44  			if err := json.Compact(&dst, []byte(msgStr)); err == nil {
    45  				msgStr = dst.String()
    46  			}
    47  		}
    48  	}
    49  	msgStr = strings.TrimSuffix(msgStr, "\n")
    50  	console.Println(msgStr)
    51  }