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stringList.go
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/
stringList.go
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// Copyright 2017 Istio 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 list
import (
"strings"
)
type stringList struct {
entries map[string]bool
}
type caseInsensitiveStringList struct {
entries map[string]bool
}
func parseStringList(buf []byte, overrides []string) list {
lines := strings.Split(string(buf), "\n")
entries := make(map[string]bool, len(lines)+len(overrides))
// copy the main strings
for _, s := range lines {
if s != "" {
entries[s] = true
}
}
// apply overrides
for _, s := range overrides {
if s != "" {
entries[s] = true
}
}
return &stringList{entries}
}
func parseCaseInsensitiveStringList(buf []byte, overrides []string) list {
lines := strings.Split(string(buf), "\n")
entries := make(map[string]bool, len(lines)+len(overrides))
// copy the main strings
for _, s := range lines {
if s != "" {
entries[strings.ToUpper(s)] = true
}
}
// apply overrides
for _, s := range overrides {
if s != "" {
entries[strings.ToUpper(s)] = true
}
}
return &caseInsensitiveStringList{entries}
}
func (ls *stringList) checkList(symbol string) (bool, error) {
_, ok := ls.entries[symbol]
return ok, nil
}
func (ls *caseInsensitiveStringList) checkList(symbol string) (bool, error) {
_, ok := ls.entries[strings.ToUpper(symbol)]
return ok, nil
}
func (ls *stringList) numEntries() int {
return len(ls.entries)
}
func (ls *caseInsensitiveStringList) numEntries() int {
return len(ls.entries)
}