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refactor cap line splitting
This commit is contained in:
Shivaram Lingamneni
parent
b7076f4c9e
commit
a75d26a46b
@ -180,6 +180,7 @@ CAPDEFS = [
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]
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def validate_defs():
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CAPDEFS.sort(key=lambda d: d.name)
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numCaps = len(CAPDEFS)
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numNames = len(set(capdef.name for capdef in CAPDEFS))
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if numCaps != numNames:
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104
irc/caps/defs.go
104
irc/caps/defs.go
@ -13,10 +13,6 @@ const (
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)
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const (
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// Acc is the proposed IRCv3 capability named "draft/acc":
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// https://github.com/ircv3/ircv3-specifications/pull/276
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Acc Capability = iota
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// AccountNotify is the IRCv3 capability named "account-notify":
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// https://ircv3.net/specs/extensions/account-notify-3.1.html
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AccountNotify Capability = iota
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@ -41,6 +37,34 @@ const (
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// https://ircv3.net/specs/extensions/chghost-3.2.html
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ChgHost Capability = iota
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// Acc is the proposed IRCv3 capability named "draft/acc":
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// https://github.com/ircv3/ircv3-specifications/pull/276
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Acc Capability = iota
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// EventPlayback is the Proposed IRCv3 capability named "draft/event-playback":
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// https://github.com/ircv3/ircv3-specifications/pull/362
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EventPlayback Capability = iota
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// LabeledResponse is the draft IRCv3 capability named "draft/labeled-response-0.2":
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// https://ircv3.net/specs/extensions/labeled-response.html
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LabeledResponse Capability = iota
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// Languages is the proposed IRCv3 capability named "draft/languages":
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// https://gist.github.com/DanielOaks/8126122f74b26012a3de37db80e4e0c6
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Languages Capability = iota
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// Rename is the proposed IRCv3 capability named "draft/rename":
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// https://github.com/SaberUK/ircv3-specifications/blob/rename/extensions/rename.md
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Rename Capability = iota
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// Resume is the proposed IRCv3 capability named "draft/resume-0.5":
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// https://github.com/DanielOaks/ircv3-specifications/blob/master+resume/extensions/resume.md
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Resume Capability = iota
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// SetName is the proposed IRCv3 capability named "draft/setname":
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// https://github.com/ircv3/ircv3-specifications/pull/361
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SetName Capability = iota
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// EchoMessage is the IRCv3 capability named "echo-message":
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// https://ircv3.net/specs/extensions/echo-message-3.2.html
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EchoMessage Capability = iota
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@ -53,18 +77,6 @@ const (
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// https://ircv3.net/specs/extensions/invite-notify-3.2.html
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InviteNotify Capability = iota
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// LabeledResponse is the draft IRCv3 capability named "draft/labeled-response-0.2":
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// https://ircv3.net/specs/extensions/labeled-response.html
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LabeledResponse Capability = iota
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// Languages is the proposed IRCv3 capability named "draft/languages":
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// https://gist.github.com/DanielOaks/8126122f74b26012a3de37db80e4e0c6
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Languages Capability = iota
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// MaxLine is the Oragono-specific capability named "oragono.io/maxline-2":
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// https://oragono.io/maxline-2
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MaxLine Capability = iota
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// MessageTags is the IRCv3 capability named "message-tags":
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// https://ircv3.net/specs/extensions/message-tags.html
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MessageTags Capability = iota
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@ -73,13 +85,17 @@ const (
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// https://ircv3.net/specs/extensions/multi-prefix-3.1.html
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MultiPrefix Capability = iota
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// Rename is the proposed IRCv3 capability named "draft/rename":
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// https://github.com/SaberUK/ircv3-specifications/blob/rename/extensions/rename.md
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Rename Capability = iota
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// Bouncer is the Oragono-specific capability named "oragono.io/bnc":
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// https://oragono.io/bnc
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Bouncer Capability = iota
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// Resume is the proposed IRCv3 capability named "draft/resume-0.5":
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// https://github.com/DanielOaks/ircv3-specifications/blob/master+resume/extensions/resume.md
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Resume Capability = iota
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// MaxLine is the Oragono-specific capability named "oragono.io/maxline-2":
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// https://oragono.io/maxline-2
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MaxLine Capability = iota
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// Nope is the Oragono vendor capability named "oragono.io/nope":
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// https://oragono.io/nope
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Nope Capability = iota
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// SASL is the IRCv3 capability named "sasl":
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// https://ircv3.net/specs/extensions/sasl-3.2.html
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@ -89,10 +105,6 @@ const (
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// https://ircv3.net/specs/extensions/server-time-3.2.html
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ServerTime Capability = iota
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// SetName is the proposed IRCv3 capability named "draft/setname":
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// https://github.com/ircv3/ircv3-specifications/pull/361
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SetName Capability = iota
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// STS is the IRCv3 capability named "sts":
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// https://ircv3.net/specs/extensions/sts.html
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STS Capability = iota
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@ -101,56 +113,44 @@ const (
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// https://ircv3.net/specs/extensions/userhost-in-names-3.2.html
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UserhostInNames Capability = iota
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// Bouncer is the Oragono-specific capability named "oragono.io/bnc":
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// https://oragono.io/bnc
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Bouncer Capability = iota
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// ZNCSelfMessage is the ZNC vendor capability named "znc.in/self-message":
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// https://wiki.znc.in/Query_buffers
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ZNCSelfMessage Capability = iota
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// EventPlayback is the Proposed IRCv3 capability named "draft/event-playback":
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// https://github.com/ircv3/ircv3-specifications/pull/362
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EventPlayback Capability = iota
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// ZNCPlayback is the ZNC vendor capability named "znc.in/playback":
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// https://wiki.znc.in/Playback
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ZNCPlayback Capability = iota
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// Nope is the Oragono vendor capability named "oragono.io/nope":
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// https://oragono.io/nope
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Nope Capability = iota
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// ZNCSelfMessage is the ZNC vendor capability named "znc.in/self-message":
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// https://wiki.znc.in/Query_buffers
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ZNCSelfMessage Capability = iota
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)
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// `capabilityNames[capab]` is the string name of the capability `capab`
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var (
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capabilityNames = [numCapabs]string{
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"draft/acc",
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"account-notify",
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"account-tag",
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"away-notify",
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"batch",
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"cap-notify",
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"chghost",
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"draft/acc",
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"draft/event-playback",
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"draft/labeled-response-0.2",
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"draft/languages",
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"draft/rename",
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"draft/resume-0.5",
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"draft/setname",
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"echo-message",
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"extended-join",
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"invite-notify",
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"draft/labeled-response-0.2",
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"draft/languages",
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"oragono.io/maxline-2",
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"message-tags",
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"multi-prefix",
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"draft/rename",
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"draft/resume-0.5",
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"oragono.io/bnc",
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"oragono.io/maxline-2",
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"oragono.io/nope",
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"sasl",
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"server-time",
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"draft/setname",
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"sts",
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"userhost-in-names",
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"oragono.io/bnc",
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"znc.in/self-message",
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"draft/event-playback",
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"znc.in/playback",
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"oragono.io/nope",
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"znc.in/self-message",
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}
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)
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@ -4,9 +4,7 @@
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package caps
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import (
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"bytes"
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"sort"
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"fmt"
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"github.com/oragono/oragono/irc/utils"
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)
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@ -95,7 +93,8 @@ const maxPayloadLength = 440
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// Strings returns all of our enabled capabilities as a slice of strings.
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func (s *Set) Strings(version Version, values Values) (result []string) {
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var strs sort.StringSlice
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var t utils.TokenLineBuilder
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t.Initialize(maxPayloadLength, " ")
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var capab Capability
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asSlice := s[:]
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@ -108,37 +107,15 @@ func (s *Set) Strings(version Version, values Values) (result []string) {
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if version >= Cap302 {
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val, exists := values[capab]
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if exists {
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capString += "=" + val
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capString = fmt.Sprintf("%s=%s", capString, val)
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}
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}
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strs = append(strs, capString)
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t.Add(capString)
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}
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if len(strs) == 0 {
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return []string{""}
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result = t.Lines()
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if result == nil {
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result = []string{""}
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}
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// sort the cap string before we send it out
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sort.Sort(strs)
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var buf bytes.Buffer
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for _, str := range strs {
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tokenLen := len(str)
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if buf.Len() != 0 {
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tokenLen += 1
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}
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if maxPayloadLength < buf.Len()+tokenLen {
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result = append(result, buf.String())
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buf.Reset()
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}
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if buf.Len() != 0 {
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buf.WriteByte(' ')
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}
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buf.WriteString(str)
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}
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if buf.Len() != 0 {
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result = append(result, buf.String())
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}
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return
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}
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@ -83,3 +83,44 @@ func MakeSplitMessage(original string, origIs512 bool) (result SplitMessage) {
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return
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}
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// TokenLineBuilder is a helper for building IRC lines composed of delimited tokens,
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// with a maximum line length.
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type TokenLineBuilder struct {
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lineLen int
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delim string
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buf bytes.Buffer
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result []string
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}
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func (t *TokenLineBuilder) Initialize(lineLen int, delim string) {
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t.lineLen = lineLen
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t.delim = delim
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}
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// Add adds a token to the line, creating a new line if necessary.
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func (t *TokenLineBuilder) Add(token string) {
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tokenLen := len(token)
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if t.buf.Len() != 0 {
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tokenLen += len(t.delim)
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}
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if t.lineLen < t.buf.Len()+tokenLen {
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t.result = append(t.result, t.buf.String())
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t.buf.Reset()
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}
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if t.buf.Len() != 0 {
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t.buf.WriteString(t.delim)
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}
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t.buf.WriteString(token)
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}
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// Lines terminates the line-building and returns all the lines.
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func (t *TokenLineBuilder) Lines() (result []string) {
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result = t.result
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t.result = nil
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if t.buf.Len() != 0 {
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result = append(result, t.buf.String())
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t.buf.Reset()
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}
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return
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}
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@ -58,3 +58,27 @@ func BenchmarkWordWrap(b *testing.B) {
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WordWrap(monteCristo, 60)
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}
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}
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func TestTokenLineBuilder(t *testing.T) {
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lineLen := 400
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var tl TokenLineBuilder
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tl.Initialize(lineLen, " ")
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for _, token := range strings.Fields(monteCristo) {
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tl.Add(token)
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}
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lines := tl.Lines()
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if len(lines) != 4 {
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t.Errorf("expected 4 lines, got %d", len(lines))
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}
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for _, line := range lines {
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if len(line) > lineLen {
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t.Errorf("line length %d exceeds maximum of %d", len(line), lineLen)
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}
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}
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joined := strings.Join(lines, " ")
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if joined != monteCristo {
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t.Errorf("text incorrectly split into lines: %s instead of %s", joined, monteCristo)
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}
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}
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