initial import

tmpl.go

@@ -0,0 +1,98 @@
+// Copyright 2016 Google Inc.
+//
+// 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 main
+
+import (
+	"bytes"
+	"fmt"
+	"html/template"
+)
+
+var licenseTemplate = make(map[string]*template.Template)
+
+func init() {
+	licenseTemplate["apache"] = template.Must(template.New("").Parse(tmplApache))
+	licenseTemplate["mit"] = template.Must(template.New("").Parse(tmplMIT))
+}
+
+type copyrightData struct {
+	Year   int
+	Holder string
+}
+
+// prefix will execute a license template l with data d
+// and prefix the result with top, middle and bottom.
+func prefix(l string, d *copyrightData, top, mid, bot string) ([]byte, error) {
+	t := licenseTemplate[l]
+	if t == nil {
+		return nil, fmt.Errorf("unknown license: %s", l)
+	}
+
+	var buf bytes.Buffer
+	if err := t.Execute(&buf, d); err != nil {
+		return nil, err
+	}
+	var out bytes.Buffer
+	if top != "" {
+		out.WriteString(top)
+		out.WriteRune('\n')
+	}
+	out.WriteString(mid)
+	for _, c := range buf.Bytes() {
+		out.WriteByte(c)
+		if c == '\n' {
+			out.WriteString(mid)
+		}
+	}
+	if bot != "" {
+		out.WriteRune('\n')
+		out.WriteString(bot)
+	}
+	out.Write([]byte{'\n', '\n'})
+	return out.Bytes(), nil
+}
+
+const tmplApache = `Copyright {{.Year}} {{.Holder}}
+
+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.`
+
+const tmplMIT = `Copyright (c) {{.Year}} {{.Holder}}
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.`