github.com/coreos/mantle@v0.13.0/storage/index/set.go (about)

     1  // Copyright 2016 CoreOS, Inc.
     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 index
    16  
    17  import (
    18  	"strings"
    19  
    20  	gs "google.golang.org/api/storage/v1"
    21  
    22  	"github.com/coreos/mantle/storage"
    23  )
    24  
    25  type IndexSet map[string]struct{}
    26  
    27  func NewIndexSet(bucket *storage.Bucket) IndexSet {
    28  	is := IndexSet(make(map[string]struct{}))
    29  
    30  	for _, prefix := range bucket.Prefixes() {
    31  		is[prefix] = struct{}{}
    32  		is[strings.TrimSuffix(prefix, "/")] = struct{}{}
    33  		is[prefix+"index.html"] = struct{}{}
    34  	}
    35  
    36  	return is
    37  }
    38  
    39  func (is IndexSet) IsIndex(obj *gs.Object) bool {
    40  	_, isIndex := is[obj.Name]
    41  	return isIndex
    42  }
    43  
    44  func (is IndexSet) NotIndex(obj *gs.Object) bool {
    45  	return !is.IsIndex(obj)
    46  }