78 lines
2 KiB
Go
78 lines
2 KiB
Go
// Copyright 2016 Jimmy Zelinskie
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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package bittorrent
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import (
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"errors"
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"strings"
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)
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// ErrUnknownEvent is returned when New fails to return an event.
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var ErrUnknownEvent = errors.New("unknown event")
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// Event represents an event done by a BitTorrent client.
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type Event uint8
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const (
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// None is the event when a BitTorrent client announces due to time lapsed
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// since the previous announce.
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None Event = iota
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// Started is the event sent by a BitTorrent client when it joins a swarm.
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Started
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// Stopped is the event sent by a BitTorrent client when it leaves a swarm.
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Stopped
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// Completed is the event sent by a BitTorrent client when it finishes
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// downloading all of the required chunks.
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Completed
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)
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var (
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eventToString = make(map[Event]string)
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stringToEvent = make(map[string]Event)
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)
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func init() {
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eventToString[None] = "none"
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eventToString[Started] = "started"
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eventToString[Stopped] = "stopped"
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eventToString[Completed] = "completed"
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stringToEvent[""] = None
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for k, v := range eventToString {
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stringToEvent[v] = k
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}
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}
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// NewEvent returns the proper Event given a string.
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func NewEvent(eventStr string) (Event, error) {
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if e, ok := stringToEvent[strings.ToLower(eventStr)]; ok {
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return e, nil
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}
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return None, ErrUnknownEvent
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}
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// String implements Stringer for an event.
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func (e Event) String() string {
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if name, ok := eventToString[e]; ok {
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return name
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}
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panic("bittorrent: event has no associated name")
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}
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