145 lines
4.8 KiB
Go
145 lines
4.8 KiB
Go
package main
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import (
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"bufio"
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"bytes"
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"fmt"
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"io/ioutil"
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"strings"
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"text/template"
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"unicode"
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)
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var licenseTemplate = map[string]string{
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"Commercial": tmplCommercial,
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"Apache-2.0": tmplApache,
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"MIT": tmplMIT,
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"bsd": tmplBSD,
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"MPL-2.0": tmplMPL,
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}
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// maintain backwards compatibility by mapping legacy license types to their
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// SPDX equivalents.
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var legacyLicenseTypes = map[string]string{
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"commercial": "Commercial",
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"apache": "Apache-2.0",
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"mit": "MIT",
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"mpl": "MPL-2.0",
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}
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// licenseData specifies the data used to fill out a license template.
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type licenseData struct {
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Year string // Copyright year(s).
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Holder string // Name of the copyright holder.
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SPDXID string // SPDX Identifier
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}
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// fetchTemplate returns the license template for the specified license and
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// optional templateFile. If templateFile is provided, the license is read
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// from the specified file. Otherwise, a template is loaded for the specified
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// license, if recognized.
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func fetchTemplate(license string, templateFile string, spdx spdxFlag) (string, error) {
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var t string
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if spdx == spdxOnly {
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t = tmplSPDX
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} else if templateFile != "" {
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d, err := ioutil.ReadFile(templateFile)
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if err != nil {
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return "", fmt.Errorf("license file: %w", err)
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}
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t = string(d)
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} else {
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t = licenseTemplate[license]
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if t == "" {
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if spdx == spdxOn {
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// unknown license, but SPDX headers requested
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t = tmplSPDX
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} else {
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return "", fmt.Errorf("unknown license: %q. Include the '-s' flag to request SPDX style headers using this license", license)
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}
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} else if spdx == spdxOn {
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// append spdx headers to recognized license
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t = t + spdxSuffix
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}
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}
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return t, nil
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}
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// executeTemplate will execute a license template t with data d
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// and prefix the result with top, middle and bottom.
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func executeTemplate(t *template.Template, d licenseData, top, mid, bot string) ([]byte, error) {
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var buf bytes.Buffer
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if err := t.Execute(&buf, d); err != nil {
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return nil, err
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}
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var out bytes.Buffer
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if top != "" {
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fmt.Fprintln(&out, top)
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}
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s := bufio.NewScanner(&buf)
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for s.Scan() {
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fmt.Fprintln(&out, strings.TrimRightFunc(mid+s.Text(), unicode.IsSpace))
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}
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if bot != "" {
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fmt.Fprintln(&out, bot)
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}
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fmt.Fprintln(&out)
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return out.Bytes(), nil
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}
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const tmplCommercial = `Copyright {{.Holder}} {{ if .Year }} 2023-{{.Year}}{{ end }}
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You can not use the contents of the file in any way without
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AVROID, Ltd. written permission.
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To obtain such a permit, you should contact AVROID, Ltd.
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at https://avroid.ru`
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const tmplApache = `Copyright{{ if .Year }} {{.Year}}{{ end }} {{.Holder}}
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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const tmplBSD = `Copyright (c){{ if .Year }} {{.Year}}{{ end }} {{.Holder}} All rights reserved.
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Use of this source code is governed by a BSD-style
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license that can be found in the LICENSE file.`
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const tmplMIT = `Copyright (c){{ if .Year }} {{.Year}}{{ end }} {{.Holder}}
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Permission is hereby granted, free of charge, to any person obtaining a copy of
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this software and associated documentation files (the "Software"), to deal in
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the Software without restriction, including without limitation the rights to
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use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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the Software, and to permit persons to whom the Software is furnished to do so,
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subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.`
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const tmplMPL = `This Source Code Form is subject to the terms of the Mozilla Public
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License, v. 2.0. If a copy of the MPL was not distributed with this
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file, You can obtain one at https://mozilla.org/MPL/2.0/.`
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const tmplSPDX = `{{ if .Holder }}Copyright{{ if .Year }} {{.Year}}{{ end }} {{.Holder}}
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{{ end }}SPDX-License-Identifier: {{.SPDXID}}`
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const spdxSuffix = "\n\nSPDX-License-Identifier: {{.SPDXID}}"
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