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// Copyright (C) MongoDB, Inc. 2017-present.
//
// 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
package tag // import "go.mongodb.org/mongo-driver/tag"
import (
"bytes"
"fmt"
)
// Tag is a name/vlaue pair.
type Tag struct {
Name string
Value string
}
// String returns a human-readable human-readable description of the tag.
func (tag Tag) String() string {
return fmt.Sprintf("%s=%s", tag.Name, tag.Value)
}
// NewTagSetFromMap creates a new tag set from a map.
func NewTagSetFromMap(m map[string]string) Set {
var set Set
for k, v := range m {
set = append(set, Tag{Name: k, Value: v})
}
return set
}
// NewTagSetsFromMaps creates new tag sets from maps.
func NewTagSetsFromMaps(maps []map[string]string) []Set {
sets := make([]Set, 0, len(maps))
for _, m := range maps {
sets = append(sets, NewTagSetFromMap(m))
}
return sets
}
// Set is an ordered list of Tags.
type Set []Tag
// Contains indicates whether the name/value pair exists in the tagset.
func (ts Set) Contains(name, value string) bool {
for _, t := range ts {
if t.Name == name && t.Value == value {
return true
}
}
return false
}
// ContainsAll indicates whether all the name/value pairs exist in the tagset.
func (ts Set) ContainsAll(other []Tag) bool {
for _, ot := range other {
if !ts.Contains(ot.Name, ot.Value) {
return false
}
}
return true
}
// String returns a human-readable human-readable description of the tagset.
func (ts Set) String() string {
var b bytes.Buffer
for i, tag := range ts {
if i > 0 {
b.WriteString(",")
}
b.WriteString(tag.String())
}
return b.String()
}
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