github.com/minio/minio@v0.0.0-20240328213742-3f72439b8a27/internal/bucket/lifecycle/prefix.go (about)

     1  // Copyright (c) 2015-2021 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 lifecycle
    19  
    20  import (
    21  	"encoding/xml"
    22  )
    23  
    24  // Prefix holds the prefix xml tag in <Rule> and <Filter>
    25  type Prefix struct {
    26  	string
    27  	set    bool
    28  	Unused struct{} // Needed for GOB compatibility
    29  }
    30  
    31  // UnmarshalXML - decodes XML data.
    32  func (p *Prefix) UnmarshalXML(d *xml.Decoder, start xml.StartElement) (err error) {
    33  	var s string
    34  	if err = d.DecodeElement(&s, &start); err != nil {
    35  		return err
    36  	}
    37  	*p = Prefix{string: s, set: true}
    38  	return nil
    39  }
    40  
    41  // MarshalXML - decodes XML data.
    42  func (p Prefix) MarshalXML(e *xml.Encoder, startElement xml.StartElement) error {
    43  	if !p.set {
    44  		return nil
    45  	}
    46  	return e.EncodeElement(p.string, startElement)
    47  }
    48  
    49  // String returns the prefix string
    50  func (p Prefix) String() string {
    51  	return p.string
    52  }