mirror of https://github.com/knative/caching.git
69 lines
2.3 KiB
Go
69 lines
2.3 KiB
Go
// Copyright 2017 Google Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package licenseclassifier
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import (
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"fmt"
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"io/ioutil"
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"os"
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"path/filepath"
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"runtime"
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"strings"
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)
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const (
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// LicenseDirectory is the directory where the prototype licenses are kept.
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LicenseDirectory = "src/github.com/google/licenseclassifier/licenses"
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// LicenseArchive is the name of the archive containing preprocessed
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// license texts.
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LicenseArchive = "licenses.db"
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// ForbiddenLicenseArchive is the name of the archive containing preprocessed
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// forbidden license texts only.
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ForbiddenLicenseArchive = "forbidden_licenses.db"
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)
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// lcRoot computes the location of the licenses data in the licenseclassifier source tree based on the location of this file.
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func lcRoot() (string, error) {
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_, filename, _, ok := runtime.Caller(0)
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if !ok {
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return "", fmt.Errorf("unable to compute path of licenseclassifier source")
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}
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// this file must be in the root of the package, or the relative paths will be wrong.
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return filepath.Join(filepath.Dir(filename), "licenses"), nil
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}
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// ReadLicenseFile locates and reads the license archive file. Absolute paths are used unmodified. Relative paths are expected to be in the licenses directory of the licenseclassifier package.
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func ReadLicenseFile(filename string) ([]byte, error) {
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if strings.HasPrefix(filename, "/") {
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return ioutil.ReadFile(filename)
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}
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root, err := lcRoot()
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if err != nil {
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return nil, fmt.Errorf("error locating licenses directory: %v", err)
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}
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return ioutil.ReadFile(filepath.Join(root, filename))
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}
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// ReadLicenseDir reads directory containing the license files.
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func ReadLicenseDir() ([]os.FileInfo, error) {
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root, err := lcRoot()
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if err != nil {
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return nil, fmt.Errorf("error locating licenses directory: %v", err)
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}
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return ioutil.ReadDir(root)
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}
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