mirror of https://github.com/knative/pkg.git
76 lines
2.2 KiB
Go
76 lines
2.2 KiB
Go
/*
|
|
Copyright 2020 The Knative Authors.
|
|
|
|
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 generators
|
|
|
|
import "strings"
|
|
|
|
// Adapted from the k8s.io comment parser https://github.com/kubernetes/gengo/blob/master/types/comments.go
|
|
|
|
// ExtractCommentTags parses comments for lines of the form:
|
|
//
|
|
// 'marker' + ':' "key=value,key2=value2".
|
|
//
|
|
// Values are optional; empty map is the default. A tag can be specified more than
|
|
// one time and all values are returned. If the resulting map has an entry for
|
|
// a key, the value (a slice) is guaranteed to have at least 1 element.
|
|
//
|
|
// Example: if you pass "+" for 'marker', and the following lines are in
|
|
// the comments:
|
|
// +foo:key=value1,key2=value2
|
|
// +bar
|
|
//
|
|
// Then this function will return:
|
|
// map[string]map[string]string{"foo":{"key":value1","key2":"value2"}, "bar": nil}
|
|
//
|
|
// Users are not expected to repeat values.
|
|
func ExtractCommentTags(marker string, lines []string) map[string]map[string]string {
|
|
out := map[string]map[string]string{}
|
|
for _, line := range lines {
|
|
line = strings.TrimSpace(line)
|
|
if len(line) == 0 || !strings.HasPrefix(line, marker) {
|
|
continue
|
|
}
|
|
|
|
options := strings.SplitN(line[len(marker):], ":", 2)
|
|
if len(options) == 2 {
|
|
vals := strings.Split(options[1], ",")
|
|
|
|
opts := out[options[0]]
|
|
if opts == nil {
|
|
opts = make(map[string]string, len(vals))
|
|
}
|
|
|
|
for _, pair := range vals {
|
|
if kv := strings.SplitN(pair, "=", 2); len(kv) == 2 {
|
|
opts[kv[0]] = kv[1]
|
|
} else if kv[0] != "" {
|
|
opts[kv[0]] = ""
|
|
}
|
|
}
|
|
if len(opts) == 0 {
|
|
out[options[0]] = nil
|
|
} else {
|
|
out[options[0]] = opts
|
|
}
|
|
} else if len(options) == 1 && options[0] != "" {
|
|
if _, has := out[options[0]]; !has {
|
|
out[options[0]] = nil
|
|
}
|
|
}
|
|
}
|
|
return out
|
|
}
|