github.com/sealerio/sealer@v0.11.1-0.20240507115618-f4f89c5853ae/utils/yaml/yaml.go (about)

     1  // Copyright © 2021 Alibaba Group Holding Ltd.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package yaml
    16  
    17  import (
    18  	"bytes"
    19  	"fmt"
    20  	"os"
    21  	"path/filepath"
    22  	"reflect"
    23  	"strings"
    24  
    25  	osi "github.com/sealerio/sealer/utils/os"
    26  
    27  	"sigs.k8s.io/yaml"
    28  )
    29  
    30  func UnmarshalFile(file string, obj interface{}) error {
    31  	data, err := os.ReadFile(filepath.Clean(file))
    32  	if err != nil {
    33  		return err
    34  	}
    35  
    36  	err = yaml.Unmarshal(data, obj)
    37  	if err != nil {
    38  		return fmt.Errorf("failed to unmarshal file %s to %s: %v", file, reflect.TypeOf(obj), err)
    39  	}
    40  	return nil
    41  }
    42  
    43  func MarshalToFile(file string, obj interface{}) error {
    44  	data, err := yaml.Marshal(obj)
    45  	if err != nil {
    46  		return err
    47  	}
    48  
    49  	return osi.NewAtomicWriter(file).WriteFile(data)
    50  }
    51  
    52  func MarshalWithDelimiter(configs ...interface{}) ([]byte, error) {
    53  	var cfgs [][]byte
    54  	for _, cfg := range configs {
    55  		data, err := yaml.Marshal(cfg)
    56  		if err != nil {
    57  			return nil, err
    58  		}
    59  		cfgs = append(cfgs, data)
    60  	}
    61  	return bytes.Join(cfgs, []byte("\n---\n")), nil
    62  }
    63  
    64  func Matcher(path string) bool {
    65  	ext := strings.ToLower(filepath.Ext(path))
    66  	return ext == ".yaml" || ext == ".yml"
    67  }