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list.go
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list.go
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// +build go1.9
// Copyright 2018 Microsoft Corporation and contributors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package model
import (
"fmt"
"io"
"os"
"path"
"github.com/marstr/collection"
)
// ListStrategy allows a mechanism for a list of packages that should be included in a profile.
type ListStrategy struct {
io.Reader
}
// Enumerate reads a new line delimited list of packages names relative to $GOPATH
func (list ListStrategy) Enumerate(cancel <-chan struct{}) collection.Enumerator {
results := make(chan interface{})
go func() {
defer close(results)
var currentLine string
for {
_, err := fmt.Fscanln(list, ¤tLine)
if err != nil {
return
}
currentLine = path.Join(os.Getenv("GOPATH"), "src", currentLine)
select {
case results <- currentLine:
// Intentionally Left Blank
case <-cancel:
return
}
}
}()
return results
}