github.com/danielqsj/helm@v2.0.0-alpha.4.0.20160908204436-976e0ba5199b+incompatible/pkg/chartutil/files.go (about)

     1  /*
     2  Copyright 2016 The Kubernetes Authors All rights reserved.
     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  
    16  package chartutil
    17  
    18  import (
    19  	"github.com/golang/protobuf/ptypes/any"
    20  )
    21  
    22  // Files is a map of files in a chart that can be accessed from a template.
    23  type Files map[string][]byte
    24  
    25  // NewFiles creates a new Files from chart files.
    26  // Given an []*any.Any (the format for files in a chart.Chart), extract a map of files.
    27  func NewFiles(from []*any.Any) Files {
    28  	files := map[string][]byte{}
    29  	for _, f := range from {
    30  		files[f.TypeUrl] = f.Value
    31  	}
    32  	return files
    33  }
    34  
    35  // GetBytes gets a file by path.
    36  //
    37  // The returned data is raw. In a template context, this is identical to calling
    38  // {{index .Files $path}}.
    39  //
    40  // This is intended to be accessed from within a template, so a missed key returns
    41  // an empty []byte.
    42  func (f Files) GetBytes(name string) []byte {
    43  	v, ok := f[name]
    44  	if !ok {
    45  		return []byte{}
    46  	}
    47  	return v
    48  }
    49  
    50  // Get returns a string representation of the given file.
    51  //
    52  // Fetch the contents of a file as a string. It is designed to be called in a
    53  // template.
    54  //
    55  //	{{.Files.Get "foo"}}
    56  func (f Files) Get(name string) string {
    57  	return string(f.GetBytes(name))
    58  }