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Update vendored libs, fix for go-xmpp@1.6.0

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This commit is contained in:
eleksir
2023-09-24 14:28:27 -07:00
parent ca384b5165
commit 48541ce14d
31 changed files with 11345 additions and 247 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
event_parser.go
View File

@@ -239,7 +239,7 @@ func parseEvent(e interface{}) { //nolint:maintidx,gocognit,gocyclo
case "urn:xmpp:time":
log.Infof("Got IQ get time request from %s", v.From)
if id, err := talk.UrnXmppTimeResponse(v, "+00:00"); err != nil {
if id, err := talk.UrnXMPPTimeResponse(v, "+00:00"); err != nil {
err := fmt.Errorf(
"unable to send urn:xmpp:time to jabber server: id=%s, err=%w",
id,

9
go.mod
View File

@@ -4,14 +4,15 @@ go 1.21
require (
github.com/davecgh/go-spew v1.1.1
github.com/eleksir/go-xmpp v1.5.0
github.com/eleksir/go-xmpp v1.6.0
github.com/hjson/hjson-go v3.3.0+incompatible
github.com/sirupsen/logrus v1.9.3
golang.org/x/exp v0.0.0-20230817173708-d852ddb80c63
golang.org/x/exp v0.0.0-20230905200255-921286631fa9
gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7
)
require (
golang.org/x/crypto v0.12.0 // indirect
golang.org/x/sys v0.11.0 // indirect
golang.org/x/crypto v0.13.0 // indirect
golang.org/x/sys v0.12.0 // indirect
golang.org/x/text v0.13.0 // indirect
)

18
go.sum
View File

@@ -1,8 +1,8 @@
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/eleksir/go-xmpp v1.5.0 h1:kAjpCxuqWiu9LdlCTkQzvczotHONpojwp/mpI4aBVmQ=
github.com/eleksir/go-xmpp v1.5.0/go.mod h1:KnvbXvUpttEVFl8l5eDO2Q7J97ZxtTMvOsDWULD2Rn8=
github.com/eleksir/go-xmpp v1.6.0 h1:bkGr0YVczJWpkyk/IHhZb2ewv+NeHLvdNfds0TFgqao=
github.com/eleksir/go-xmpp v1.6.0/go.mod h1:Ii6Wemk+yuGQOF+Glt0syjvtcPvdaBLstuNp/+rRJrg=
github.com/hjson/hjson-go v3.3.0+incompatible h1:Rqr+Ya+0aCJMjaE4s8E9YKvuJLuLVpEvz4ONum52vnI=
github.com/hjson/hjson-go v3.3.0+incompatible/go.mod h1:qsetwF8NlsTsOTwZTApNlTCerV+b2GjYRRcIk4JMFio=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
@@ -12,13 +12,15 @@ github.com/sirupsen/logrus v1.9.3/go.mod h1:naHLuLoDiP4jHNo9R0sCBMtWGeIprob74mVs
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
golang.org/x/crypto v0.12.0 h1:tFM/ta59kqch6LlvYnPa0yx5a83cL2nHflFhYKvv9Yk=
golang.org/x/crypto v0.12.0/go.mod h1:NF0Gs7EO5K4qLn+Ylc+fih8BSTeIjAP05siRnAh98yw=
golang.org/x/exp v0.0.0-20230817173708-d852ddb80c63 h1:m64FZMko/V45gv0bNmrNYoDEq8U5YUhetc9cBWKS1TQ=
golang.org/x/exp v0.0.0-20230817173708-d852ddb80c63/go.mod h1:0v4NqG35kSWCMzLaMeX+IQrlSnVE/bqGSyC2cz/9Le8=
golang.org/x/crypto v0.13.0 h1:mvySKfSWJ+UKUii46M40LOvyWfN0s2U+46/jDd0e6Ck=
golang.org/x/crypto v0.13.0/go.mod h1:y6Z2r+Rw4iayiXXAIxJIDAJ1zMW4yaTpebo8fPOliYc=
golang.org/x/exp v0.0.0-20230905200255-921286631fa9 h1:GoHiUyI/Tp2nVkLI2mCxVkOjsbSXD66ic0XW0js0R9g=
golang.org/x/exp v0.0.0-20230905200255-921286631fa9/go.mod h1:S2oDrQGGwySpoQPVqRShND87VCbxmc6bL1Yd2oYrm6k=
golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.11.0 h1:eG7RXZHdqOJ1i+0lgLgCpSXAp6M3LYlAo6osgSi0xOM=
golang.org/x/sys v0.11.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.12.0 h1:CM0HF96J0hcLAwsHPJZjfdNzs0gftsLfgKt57wWHJ0o=
golang.org/x/sys v0.12.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/text v0.13.0 h1:ablQoSUd0tRdKxZewP80B+BaqeKJuVhuRxj/dkrun3k=
golang.org/x/text v0.13.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=

66
vendor/github.com/eleksir/go-xmpp/.golangci.yml generated vendored Normal file
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@@ -0,0 +1,66 @@
run:
tests: false
skip-dirs:
- _example
modules-download-mode: readonly
allow-parallel-runners: true
go: '1.21'
output:
sort-results: true
linters-settings:
gosec:
excludes:
# Оно не используется для повышения безопасности или каких-то таких секъюрых вещей, оно используется для выборки
# произвольного элемента из массива, так что ИДИ НАХУЙ с этой проверкой и не еби мозги липовой безопасностью.
- G404 # Insecure random number source (rand)
linters:
disable-all: true
enable:
- errcheck
- gosimple
- govet
- ineffassign
- staticcheck
- unused
- asasalint
- asciicheck
- bodyclose
- containedctx
- contextcheck
- decorder
- durationcheck
- errchkjson
- errorlint
- exhaustive
- exportloopref
- gci
- ginkgolinter
- gocheckcompilerdirectives
- gocritic
- godot
- gofmt
- goimports
- gosec
- gosmopolitan
- grouper
- importas
- ireturn
- makezero
- mirror
- nakedret
- nilerr
- nilnil
- nlreturn
- noctx
- nolintlint
- nonamedreturns
- predeclared
- promlinter
- reassign
- revive
- rowserrcheck
- stylecheck
- unconvert
- wastedassign
- whitespace
- wsl

10
vendor/github.com/eleksir/go-xmpp/README.md generated vendored
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@@ -3,12 +3,12 @@ go-xmpp
go xmpp library.
[Original](https://github.com/rsc/rsc/blob/master/xmpp/xmpp.go) was done by [Russ Cox](https://github.com/rsc), then
forked by [Yasuhiro Matsumoto](https://github.com/mattn).
[Original](https://github.com/rsc/rsc/blob/master/xmpp/xmpp.go) work done by [Russ Cox](https://github.com/rsc),
then [Yasuhiro Matsumoto](https://github.com/mattn) fork it and continue to improve it.
Since both of them have amost zero interest in continuing develop of this lib, i decide to fork it.
Since both of them have almost zero interest to continue develop this lib, I decide to fork it.
Documentation can be found at [godoc project](https://godoc.org/github.com/eleksir/go-xmpp)
This fork mainains my needs for xmpp protocol. Feel free to contribute via PR-s if you find it interesing too and feel
that it needs more love than it already has.
This fork maintains my needs for xmpp protocol. Feel free to contribute via PR-s if you find it interesting too and feel
that it needs more love than it already has. And of course fell free to for it if needed.

672
vendor/github.com/eleksir/go-xmpp/xmpp.go generated vendored
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File diff suppressed because it is too large Load Diff

46
vendor/github.com/eleksir/go-xmpp/xmpp_avatar.go generated vendored
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@@ -1,7 +1,7 @@
package xmpp
import (
"crypto/sha1"
"crypto/sha1" //nolint:gosec // go fuck yourself, gosec. You don't even fucking read rfc. So shout the fuck up.
"encoding/base64"
"encoding/hex"
"encoding/xml"
@@ -10,8 +10,8 @@ import (
)
const (
XMPPNS_AVATAR_PEP_DATA = "urn:xmpp:avatar:data"
XMPPNS_AVATAR_PEP_METADATA = "urn:xmpp:avatar:metadata"
XMPPNS_AVATAR_PEP_DATA = "urn:xmpp:avatar:data" //nocritic:revive
XMPPNS_AVATAR_PEP_METADATA = "urn:xmpp:avatar:metadata" //nocritic:revive
)
type clientAvatarData struct {
@@ -52,8 +52,8 @@ type AvatarMetadata struct {
func handleAvatarData(itemsBody []byte, from, id string) (AvatarData, error) {
var data clientAvatarData
err := xml.Unmarshal(itemsBody, &data)
if err != nil {
if err := xml.Unmarshal(itemsBody, &data); err != nil {
return AvatarData{}, err
}
@@ -64,8 +64,9 @@ func handleAvatarData(itemsBody []byte, from, id string) (AvatarData, error) {
return AvatarData{}, err
}
hash := sha1.Sum(dataRaw)
hash := sha1.Sum(dataRaw) //nolint:gosec // go fuck yourself, gosec. This exact mechanics described in standard.
hashStr := hex.EncodeToString(hash[:])
if hashStr != id {
return AvatarData{}, errors.New("SHA1 hashes do not match")
}
@@ -77,9 +78,12 @@ func handleAvatarData(itemsBody []byte, from, id string) (AvatarData, error) {
}
func handleAvatarMetadata(body []byte, from string) (AvatarMetadata, error) {
var meta clientAvatarMetadata
err := xml.Unmarshal(body, &meta)
if err != nil {
var (
meta clientAvatarMetadata
err error
)
if err = xml.Unmarshal(body, &meta); err != nil {
return AvatarMetadata{}, err
}
@@ -91,10 +95,10 @@ func handleAvatarMetadata(body []byte, from string) (AvatarMetadata, error) {
ID: meta.Info.ID,
Type: meta.Info.Type,
URL: meta.Info.URL,
}, nil
}, err
}
// A wrapper for atoi which just returns -1 if an error occurs
// atoiw is a wrapper for atoi which just returns -1 if an error occurs.
func atoiw(str string) int {
i, err := strconv.Atoi(str)
if err != nil {
@@ -104,22 +108,22 @@ func atoiw(str string) int {
return i
}
func (c *Client) AvatarSubscribeMetadata(jid string) {
c.PubsubSubscribeNode(XMPPNS_AVATAR_PEP_METADATA, jid)
func (c *Client) AvatarSubscribeMetadata(jid string) (string, error) {
return c.PubsubSubscribeNode(XMPPNS_AVATAR_PEP_METADATA, jid)
}
func (c *Client) AvatarUnsubscribeMetadata(jid string) {
c.PubsubUnsubscribeNode(XMPPNS_AVATAR_PEP_METADATA, jid)
func (c *Client) AvatarUnsubscribeMetadata(jid string) (string, error) {
return c.PubsubUnsubscribeNode(XMPPNS_AVATAR_PEP_METADATA, jid)
}
func (c *Client) AvatarRequestData(jid string) {
c.PubsubRequestLastItems(XMPPNS_AVATAR_PEP_DATA, jid)
func (c *Client) AvatarRequestData(jid string) (string, error) {
return c.PubsubRequestLastItems(XMPPNS_AVATAR_PEP_DATA, jid)
}
func (c *Client) AvatarRequestDataByID(jid, id string) {
c.PubsubRequestItem(XMPPNS_AVATAR_PEP_DATA, jid, id)
func (c *Client) AvatarRequestDataByID(jid, id string) (string, error) {
return c.PubsubRequestItem(XMPPNS_AVATAR_PEP_DATA, jid, id)
}
func (c *Client) AvatarRequestMetadata(jid string) {
c.PubsubRequestLastItems(XMPPNS_AVATAR_PEP_METADATA, jid)
func (c *Client) AvatarRequestMetadata(jid string) (string, error) {
return c.PubsubRequestLastItems(XMPPNS_AVATAR_PEP_METADATA, jid)
}

5
vendor/github.com/eleksir/go-xmpp/xmpp_disco.go generated vendored
View File

@@ -5,8 +5,8 @@ import (
)
const (
XMPPNS_DISCO_ITEMS = "http://jabber.org/protocol/disco#items"
XMPPNS_DISCO_INFO = "http://jabber.org/protocol/disco#info"
XMPPNS_DISCO_ITEMS = "http://jabber.org/protocol/disco#items" //nocritic:revive
XMPPNS_DISCO_INFO = "http://jabber.org/protocol/disco#info" //nocritic:revive
)
type clientDiscoFeature struct {
@@ -90,6 +90,7 @@ func clientIdentitiesToReturn(identities []clientDiscoIdentity) []DiscoIdentity
func clientDiscoItemsToReturn(items []clientDiscoItem) []DiscoItem {
var ret []DiscoItem
for _, item := range items {
ret = append(ret, DiscoItem{
Jid: item.Jid,

16
vendor/github.com/eleksir/go-xmpp/xmpp_information_query.go generated vendored
View File

@@ -14,22 +14,25 @@ const IQTypeError = "error"
func (c *Client) Discovery() (string, error) {
// use getCookie for a pseudo random id.
reqID := strconv.FormatUint(uint64(getCookie()), 10)
return c.RawInformationQuery(c.jid, c.domain, reqID, IQTypeGet, XMPPNS_DISCO_ITEMS, "")
}
// DiscoverNodeInfo discovers information about a node. Empty node queries info about server itself.
func (c *Client) DiscoverNodeInfo(node string) (string, error) {
query := fmt.Sprintf("<query xmlns='%s' node='%s'/>", XMPPNS_DISCO_INFO, node)
return c.RawInformation(c.jid, c.domain, "info3", IQTypeGet, query)
}
// DiscoverInfo discovers information about given item from given jid.
func (c *Client) DiscoverInfo(from string, to string) (string, error) {
query := fmt.Sprintf("<query xmlns='%s'/>", XMPPNS_DISCO_INFO)
return c.RawInformation(from, to, "info3", IQTypeGet, query)
}
// DiscoverServerItems discover items that the server exposes
// DiscoverServerItems discover items that the server exposes.
func (c *Client) DiscoverServerItems() (string, error) {
return c.DiscoverEntityItems(c.domain)
}
@@ -37,6 +40,7 @@ func (c *Client) DiscoverServerItems() (string, error) {
// DiscoverEntityItems discovers items that an entity exposes.
func (c *Client) DiscoverEntityItems(jid string) (string, error) {
query := fmt.Sprintf("<query xmlns='%s'/>", XMPPNS_DISCO_ITEMS)
return c.RawInformation(c.jid, jid, "info1", IQTypeGet, query)
}
@@ -44,6 +48,7 @@ func (c *Client) DiscoverEntityItems(jid string) (string, error) {
func (c *Client) RawInformationQuery(from, to, id, iqType, requestNamespace, body string) (string, error) {
const xmlIQ = "<iq from='%s' to='%s' id='%s' type='%s'><query xmlns='%s'>%s</query></iq>"
_, err := fmt.Fprintf(StanzaWriter, xmlIQ, xmlEscape(from), xmlEscape(to), id, iqType, requestNamespace, body)
return id, err
}
@@ -51,6 +56,7 @@ func (c *Client) RawInformationQuery(from, to, id, iqType, requestNamespace, bod
func (c *Client) RawInformation(from, to, id, iqType, body string) (string, error) {
const xmlIQ = "<iq from='%s' to='%s' id='%s' type='%s'>%s</iq>"
_, err := fmt.Fprintf(StanzaWriter, xmlIQ, xmlEscape(from), xmlEscape(to), id, iqType, body)
return id, err
}
@@ -64,7 +70,7 @@ func (c *Client) IqVersionResponse(v IQ, name, version, os string) (string, erro
version = "undefined"
}
query := "<query xmlns=\"jabber:iq:version\">" //nolint:wsl
query := "<query xmlns=\"jabber:iq:version\">"
query += fmt.Sprintf("<name>%s</name>", name)
query += fmt.Sprintf("<version>%s</version>", version)
@@ -100,9 +106,9 @@ func (c *Client) JabberIqLastResponse(v IQ, lastActivity int64) (string, error)
)
}
// UrnXmppTimeResponse implements response to query entity's current time (xep-0202).
// TimezoneOffset have format +HH:MM or -HH:MM
func (c *Client) UrnXmppTimeResponse(v IQ, timezoneOffset string) (string, error) {
// UrnXMPPTimeResponse implements response to query entity's current time (xep-0202).
// TimezoneOffset have format +HH:MM or -HH:MM.
func (c *Client) UrnXMPPTimeResponse(v IQ, timezoneOffset string) (string, error) {
query := fmt.Sprintf(
"<time xmlns=\"urn:xmpp:time\"><tzo>%s</tzo><utc>%s</utc></time>",
timezoneOffset,

41
vendor/github.com/eleksir/go-xmpp/xmpp_muc.go generated vendored
View File

@@ -3,7 +3,6 @@
// license that can be found in the LICENSE file.
// TODO(flo):
// - support password protected MUC rooms
// - cleanup signatures of join/leave functions
package xmpp
@@ -23,16 +22,18 @@ const (
SinceHistory = 4
)
// Send sends room topic wrapped inside an XMPP message stanza body.
func (c *Client) SendTopic(chat Chat) (n int, err error) {
// SendTopic sends room topic wrapped inside an XMPP message stanza body.
func (c *Client) SendTopic(chat Chat) (int, error) {
return fmt.Fprintf(StanzaWriter, "<message to='%s' type='%s' xml:lang='en'>"+"<subject>%s</subject></message>",
xmlEscape(chat.Remote), xmlEscape(chat.Type), xmlEscape(chat.Text))
}
func (c *Client) JoinMUCNoHistory(jid, nick string) (n int, err error) {
// JoinMUCNoHistory joins room and instructs server that no history data required.
func (c *Client) JoinMUCNoHistory(jid, nick string) (int, error) {
if nick == "" {
nick = c.jid
}
return fmt.Fprintf(StanzaWriter, "<presence to='%s/%s'>\n"+
"<x xmlns='%s'>"+
"<history maxchars='0'/></x>\n"+
@@ -40,12 +41,13 @@ func (c *Client) JoinMUCNoHistory(jid, nick string) (n int, err error) {
xmlEscape(jid), xmlEscape(nick), nsMUC)
}
// xep-0045 7.2
func (c *Client) JoinMUC(jid, nick string, history_type, history int, history_date *time.Time) (n int, err error) {
// JoinMUC joins room, xep-0045 7.2.
func (c *Client) JoinMUC(jid, nick string, historyType, history int, historyDate *time.Time) (int, error) {
if nick == "" {
nick = c.jid
}
switch history_type {
switch historyType {
case NoHistory:
return fmt.Fprintf(StanzaWriter, "<presence to='%s/%s'>\n"+
"<x xmlns='%s' />\n"+
@@ -70,23 +72,25 @@ func (c *Client) JoinMUC(jid, nick string, history_type, history int, history_da
"</presence>",
xmlEscape(jid), xmlEscape(nick), nsMUC, history)
case SinceHistory:
if history_date != nil {
if historyDate != nil {
return fmt.Fprintf(StanzaWriter, "<presence to='%s/%s'>\n"+
"<x xmlns='%s'>\n"+
"<history since='%s'/></x>\n"+
"</presence>",
xmlEscape(jid), xmlEscape(nick), nsMUC, history_date.Format(time.RFC3339))
xmlEscape(jid), xmlEscape(nick), nsMUC, historyDate.Format(time.RFC3339))
}
}
return 0, errors.New("Unknown history option")
return 0, errors.New("unknown history option")
}
// xep-0045 7.2.6
func (c *Client) JoinProtectedMUC(jid, nick string, password string, history_type, history int, history_date *time.Time) (n int, err error) {
// JoinProtectedMUC joins password protected room, xep-0045 7.2.6.
func (c *Client) JoinProtectedMUC(jid, nick string, password string, historyType, history int, historyDate *time.Time) (int, error) {
if nick == "" {
nick = c.jid
}
switch history_type {
switch historyType {
case NoHistory:
return fmt.Fprintf(StanzaWriter, "<presence to='%s/%s'>\n"+
"<x xmlns='%s'>\n"+
@@ -116,20 +120,21 @@ func (c *Client) JoinProtectedMUC(jid, nick string, password string, history_typ
"</presence>",
xmlEscape(jid), xmlEscape(nick), nsMUC, xmlEscape(password), history)
case SinceHistory:
if history_date != nil {
if historyDate != nil {
return fmt.Fprintf(StanzaWriter, "<presence to='%s/%s'>\n"+
"<x xmlns='%s'>\n"+
"<password>%s</password>\n"+
"<history since='%s'/></x>\n"+
"</presence>",
xmlEscape(jid), xmlEscape(nick), nsMUC, xmlEscape(password), history_date.Format(time.RFC3339))
xmlEscape(jid), xmlEscape(nick), nsMUC, xmlEscape(password), historyDate.Format(time.RFC3339))
}
}
return 0, errors.New("Unknown history option")
return 0, errors.New("unknown history option")
}
// xep-0045 7.14
func (c *Client) LeaveMUC(jid string) (n int, err error) {
// LeaveMUC quits from room xep-0045 7.14.
func (c *Client) LeaveMUC(jid string) (int, error) {
return fmt.Fprintf(StanzaWriter, "<presence from='%s' to='%s' type='unavailable' />",
c.jid, xmlEscape(jid))
}

7
vendor/github.com/eleksir/go-xmpp/xmpp_ping.go generated vendored
View File

@@ -8,13 +8,16 @@ func (c *Client) PingC2S(jid, server string) error {
if jid == "" {
jid = c.jid
}
if server == "" {
server = c.domain
}
_, err := fmt.Fprintf(StanzaWriter, "<iq from='%s' to='%s' id='c2s1' type='get'>\n"+
"<ping xmlns='urn:xmpp:ping'/>\n"+
"</iq>",
xmlEscape(jid), xmlEscape(server))
return err
}
@@ -23,16 +26,18 @@ func (c *Client) PingS2S(fromServer, toServer string) error {
"<ping xmlns='urn:xmpp:ping'/>\n"+
"</iq>",
xmlEscape(fromServer), xmlEscape(toServer))
return err
}
func (c *Client) SendResultPing(id, toServer string) error {
_, err := fmt.Fprintf(StanzaWriter, "<iq type='result' to='%s' id='%s'/>",
xmlEscape(toServer), xmlEscape(id))
return err
}
// PingResponse responding to ping query according to xep-0199
// PingResponse responding to ping query according to xep-0199.
func (c *Client) PingResponse(v IQ) (string, error) {
return c.RawInformation(
v.To,

10
vendor/github.com/eleksir/go-xmpp/xmpp_pubsub.go generated vendored
View File

@@ -6,8 +6,8 @@ import (
)
const (
XMPPNS_PUBSUB = "http://jabber.org/protocol/pubsub"
XMPPNS_PUBSUB_EVENT = "http://jabber.org/protocol/pubsub#event"
XMPPNS_PUBSUB = "http://jabber.org/protocol/pubsub" //nolint:revive
XMPPNS_PUBSUB_EVENT = "http://jabber.org/protocol/pubsub#event" //nolint:revive
)
type clientPubsubItem struct {
@@ -67,7 +67,7 @@ type PubsubItems struct {
Items []PubsubItem
}
// Converts []clientPubsubItem to []PubsubItem
// Converts []clientPubsubItem to []PubsubItem.
func pubsubItemsToReturn(items []clientPubsubItem) []PubsubItem {
var tmp []PubsubItem
for _, i := range items {
@@ -96,6 +96,7 @@ func pubsubSubscriptionStanza(node, jid string) string {
body := fmt.Sprintf("<subscribe node='%s' jid='%s'/>",
xmlEscape(node),
xmlEscape(jid))
return pubsubStanza(body)
}
@@ -103,6 +104,7 @@ func pubsubUnsubscriptionStanza(node, jid string) string {
body := fmt.Sprintf("<unsubscribe node='%s' jid='%s'/>",
xmlEscape(node),
xmlEscape(jid))
return pubsubStanza(body)
}
@@ -124,10 +126,12 @@ func (c *Client) PubsubUnsubscribeNode(node, jid string) (string, error) {
func (c *Client) PubsubRequestLastItems(node, jid string) (string, error) {
body := fmt.Sprintf("<items node='%s'/>", node)
return c.RawInformation(c.jid, jid, "items1", "get", pubsubStanza(body))
}
func (c *Client) PubsubRequestItem(node, jid, id string) (string, error) {
body := fmt.Sprintf("<items node='%s'><item id='%s'/></items>", node, id)
return c.RawInformation(c.jid, jid, "items3", "get", pubsubStanza(body))
}

24
vendor/github.com/eleksir/go-xmpp/xmpp_subscription.go generated vendored
View File

@@ -4,22 +4,30 @@ import (
"fmt"
)
func (c *Client) ApproveSubscription(jid string) {
fmt.Fprintf(StanzaWriter, "<presence to='%s' type='subscribed'/>",
func (c *Client) ApproveSubscription(jid string) error {
_, err := fmt.Fprintf(StanzaWriter, "<presence to='%s' type='subscribed'/>",
xmlEscape(jid))
return err
}
func (c *Client) RevokeSubscription(jid string) {
fmt.Fprintf(StanzaWriter, "<presence to='%s' type='unsubscribed'/>",
func (c *Client) RevokeSubscription(jid string) error {
_, err := fmt.Fprintf(StanzaWriter, "<presence to='%s' type='unsubscribed'/>",
xmlEscape(jid))
return err
}
func (c *Client) RetrieveSubscription(jid string) {
fmt.Fprintf(c.conn, "<presence to='%s' type='unsubscribe'/>",
func (c *Client) RetrieveSubscription(jid string) error {
_, err := fmt.Fprintf(c.conn, "<presence to='%s' type='unsubscribe'/>",
xmlEscape(jid))
return err
}
func (c *Client) RequestSubscription(jid string) {
fmt.Fprintf(StanzaWriter, "<presence to='%s' type='subscribe'/>",
func (c *Client) RequestSubscription(jid string) error {
_, err := fmt.Fprintf(StanzaWriter, "<presence to='%s' type='subscribe'/>",
xmlEscape(jid))
return err
}

1
vendor/golang.org/x/sys/unix/mkerrors.sh generated vendored
View File

@@ -583,6 +583,7 @@ ccflags="$@"
$2 ~ /^PERF_/ ||
$2 ~ /^SECCOMP_MODE_/ ||
$2 ~ /^SEEK_/ ||
$2 ~ /^SCHED_/ ||
$2 ~ /^SPLICE_/ ||
$2 ~ /^SYNC_FILE_RANGE_/ ||
$2 !~ /IOC_MAGIC/ &&

23
vendor/golang.org/x/sys/unix/syscall_linux.go generated vendored
View File

@@ -2471,6 +2471,29 @@ func Pselect(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timespec, sigmask *
return pselect6(nfd, r, w, e, mutableTimeout, kernelMask)
}
//sys schedSetattr(pid int, attr *SchedAttr, flags uint) (err error)
//sys schedGetattr(pid int, attr *SchedAttr, size uint, flags uint) (err error)
// SchedSetAttr is a wrapper for sched_setattr(2) syscall.
// https://man7.org/linux/man-pages/man2/sched_setattr.2.html
func SchedSetAttr(pid int, attr *SchedAttr, flags uint) error {
if attr == nil {
return EINVAL
}
attr.Size = SizeofSchedAttr
return schedSetattr(pid, attr, flags)
}
// SchedGetAttr is a wrapper for sched_getattr(2) syscall.
// https://man7.org/linux/man-pages/man2/sched_getattr.2.html
func SchedGetAttr(pid int, flags uint) (*SchedAttr, error) {
attr := &SchedAttr{}
if err := schedGetattr(pid, attr, SizeofSchedAttr, flags); err != nil {
return nil, err
}
return attr, nil
}
/*
* Unimplemented
*/

3
vendor/golang.org/x/sys/unix/syscall_unix.go generated vendored
View File

@@ -549,6 +549,9 @@ func SetNonblock(fd int, nonblocking bool) (err error) {
if err != nil {
return err
}
if (flag&O_NONBLOCK != 0) == nonblocking {
return nil
}
if nonblocking {
flag |= O_NONBLOCK
} else {

17
vendor/golang.org/x/sys/unix/zerrors_linux.go generated vendored
View File

@@ -2821,6 +2821,23 @@ const (
RWF_SUPPORTED = 0x1f
RWF_SYNC = 0x4
RWF_WRITE_LIFE_NOT_SET = 0x0
SCHED_BATCH = 0x3
SCHED_DEADLINE = 0x6
SCHED_FIFO = 0x1
SCHED_FLAG_ALL = 0x7f
SCHED_FLAG_DL_OVERRUN = 0x4
SCHED_FLAG_KEEP_ALL = 0x18
SCHED_FLAG_KEEP_PARAMS = 0x10
SCHED_FLAG_KEEP_POLICY = 0x8
SCHED_FLAG_RECLAIM = 0x2
SCHED_FLAG_RESET_ON_FORK = 0x1
SCHED_FLAG_UTIL_CLAMP = 0x60
SCHED_FLAG_UTIL_CLAMP_MAX = 0x40
SCHED_FLAG_UTIL_CLAMP_MIN = 0x20
SCHED_IDLE = 0x5
SCHED_NORMAL = 0x0
SCHED_RESET_ON_FORK = 0x40000000
SCHED_RR = 0x2
SCM_CREDENTIALS = 0x2
SCM_RIGHTS = 0x1
SCM_TIMESTAMP = 0x1d

20
vendor/golang.org/x/sys/unix/zsyscall_linux.go generated vendored
View File

@@ -2197,3 +2197,23 @@ func getresgid(rgid *_C_int, egid *_C_int, sgid *_C_int) {
RawSyscallNoError(SYS_GETRESGID, uintptr(unsafe.Pointer(rgid)), uintptr(unsafe.Pointer(egid)), uintptr(unsafe.Pointer(sgid)))
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func schedSetattr(pid int, attr *SchedAttr, flags uint) (err error) {
_, _, e1 := Syscall(SYS_SCHED_SETATTR, uintptr(pid), uintptr(unsafe.Pointer(attr)), uintptr(flags))
if e1 != 0 {
err = errnoErr(e1)
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func schedGetattr(pid int, attr *SchedAttr, size uint, flags uint) (err error) {
_, _, e1 := Syscall6(SYS_SCHED_GETATTR, uintptr(pid), uintptr(unsafe.Pointer(attr)), uintptr(size), uintptr(flags), 0, 0)
if e1 != 0 {
err = errnoErr(e1)
}
return
}

15
vendor/golang.org/x/sys/unix/ztypes_linux.go generated vendored
View File

@@ -5868,3 +5868,18 @@ const (
VIRTIO_NET_HDR_GSO_UDP_L4 = 0x5
VIRTIO_NET_HDR_GSO_ECN = 0x80
)
type SchedAttr struct {
Size uint32
Policy uint32
Flags uint64
Nice int32
Priority uint32
Runtime uint64
Deadline uint64
Period uint64
Util_min uint32
Util_max uint32
}
const SizeofSchedAttr = 0x38

11
vendor/golang.org/x/sys/windows/syscall_windows.go generated vendored
View File

@@ -216,7 +216,7 @@ func NewCallbackCDecl(fn interface{}) uintptr {
//sys shGetKnownFolderPath(id *KNOWNFOLDERID, flags uint32, token Token, path **uint16) (ret error) = shell32.SHGetKnownFolderPath
//sys TerminateProcess(handle Handle, exitcode uint32) (err error)
//sys GetExitCodeProcess(handle Handle, exitcode *uint32) (err error)
//sys GetStartupInfo(startupInfo *StartupInfo) (err error) = GetStartupInfoW
//sys getStartupInfo(startupInfo *StartupInfo) = GetStartupInfoW
//sys GetProcessTimes(handle Handle, creationTime *Filetime, exitTime *Filetime, kernelTime *Filetime, userTime *Filetime) (err error)
//sys DuplicateHandle(hSourceProcessHandle Handle, hSourceHandle Handle, hTargetProcessHandle Handle, lpTargetHandle *Handle, dwDesiredAccess uint32, bInheritHandle bool, dwOptions uint32) (err error)
//sys WaitForSingleObject(handle Handle, waitMilliseconds uint32) (event uint32, err error) [failretval==0xffffffff]
@@ -437,6 +437,10 @@ func NewCallbackCDecl(fn interface{}) uintptr {
//sys DwmGetWindowAttribute(hwnd HWND, attribute uint32, value unsafe.Pointer, size uint32) (ret error) = dwmapi.DwmGetWindowAttribute
//sys DwmSetWindowAttribute(hwnd HWND, attribute uint32, value unsafe.Pointer, size uint32) (ret error) = dwmapi.DwmSetWindowAttribute
// Windows Multimedia API
//sys TimeBeginPeriod (period uint32) (err error) [failretval != 0] = winmm.timeBeginPeriod
//sys TimeEndPeriod (period uint32) (err error) [failretval != 0] = winmm.timeEndPeriod
// syscall interface implementation for other packages
// GetCurrentProcess returns the handle for the current process.
@@ -1624,6 +1628,11 @@ func SetConsoleCursorPosition(console Handle, position Coord) error {
return setConsoleCursorPosition(console, *((*uint32)(unsafe.Pointer(&position))))
}
func GetStartupInfo(startupInfo *StartupInfo) error {
getStartupInfo(startupInfo)
return nil
}
func (s NTStatus) Errno() syscall.Errno {
return rtlNtStatusToDosErrorNoTeb(s)
}

26
vendor/golang.org/x/sys/windows/zsyscall_windows.go generated vendored
View File

@@ -55,6 +55,7 @@ var (
moduser32 = NewLazySystemDLL("user32.dll")
moduserenv = NewLazySystemDLL("userenv.dll")
modversion = NewLazySystemDLL("version.dll")
modwinmm = NewLazySystemDLL("winmm.dll")
modwintrust = NewLazySystemDLL("wintrust.dll")
modws2_32 = NewLazySystemDLL("ws2_32.dll")
modwtsapi32 = NewLazySystemDLL("wtsapi32.dll")
@@ -468,6 +469,8 @@ var (
procGetFileVersionInfoSizeW = modversion.NewProc("GetFileVersionInfoSizeW")
procGetFileVersionInfoW = modversion.NewProc("GetFileVersionInfoW")
procVerQueryValueW = modversion.NewProc("VerQueryValueW")
proctimeBeginPeriod = modwinmm.NewProc("timeBeginPeriod")
proctimeEndPeriod = modwinmm.NewProc("timeEndPeriod")
procWinVerifyTrustEx = modwintrust.NewProc("WinVerifyTrustEx")
procFreeAddrInfoW = modws2_32.NewProc("FreeAddrInfoW")
procGetAddrInfoW = modws2_32.NewProc("GetAddrInfoW")
@@ -2367,11 +2370,8 @@ func GetShortPathName(longpath *uint16, shortpath *uint16, buflen uint32) (n uin
return
}
func GetStartupInfo(startupInfo *StartupInfo) (err error) {
r1, _, e1 := syscall.Syscall(procGetStartupInfoW.Addr(), 1, uintptr(unsafe.Pointer(startupInfo)), 0, 0)
if r1 == 0 {
err = errnoErr(e1)
}
func getStartupInfo(startupInfo *StartupInfo) {
syscall.Syscall(procGetStartupInfoW.Addr(), 1, uintptr(unsafe.Pointer(startupInfo)), 0, 0)
return
}
@@ -4017,6 +4017,22 @@ func _VerQueryValue(block unsafe.Pointer, subBlock *uint16, pointerToBufferPoint
return
}
func TimeBeginPeriod(period uint32) (err error) {
r1, _, e1 := syscall.Syscall(proctimeBeginPeriod.Addr(), 1, uintptr(period), 0, 0)
if r1 != 0 {
err = errnoErr(e1)
}
return
}
func TimeEndPeriod(period uint32) (err error) {
r1, _, e1 := syscall.Syscall(proctimeEndPeriod.Addr(), 1, uintptr(period), 0, 0)
if r1 != 0 {
err = errnoErr(e1)
}
return
}
func WinVerifyTrustEx(hwnd HWND, actionId *GUID, data *WinTrustData) (ret error) {
r0, _, _ := syscall.Syscall(procWinVerifyTrustEx.Addr(), 3, uintptr(hwnd), uintptr(unsafe.Pointer(actionId)), uintptr(unsafe.Pointer(data)))
if r0 != 0 {

27
vendor/golang.org/x/text/LICENSE generated vendored Normal file
View File

@@ -0,0 +1,27 @@
Copyright (c) 2009 The Go Authors. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
* Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

22
vendor/golang.org/x/text/PATENTS generated vendored Normal file
View File

@@ -0,0 +1,22 @@
Additional IP Rights Grant (Patents)
"This implementation" means the copyrightable works distributed by
Google as part of the Go project.
Google hereby grants to You a perpetual, worldwide, non-exclusive,
no-charge, royalty-free, irrevocable (except as stated in this section)
patent license to make, have made, use, offer to sell, sell, import,
transfer and otherwise run, modify and propagate the contents of this
implementation of Go, where such license applies only to those patent
claims, both currently owned or controlled by Google and acquired in
the future, licensable by Google that are necessarily infringed by this
implementation of Go. This grant does not include claims that would be
infringed only as a consequence of further modification of this
implementation. If you or your agent or exclusive licensee institute or
order or agree to the institution of patent litigation against any
entity (including a cross-claim or counterclaim in a lawsuit) alleging
that this implementation of Go or any code incorporated within this
implementation of Go constitutes direct or contributory patent
infringement, or inducement of patent infringement, then any patent
rights granted to you under this License for this implementation of Go
shall terminate as of the date such litigation is filed.

249
vendor/golang.org/x/text/encoding/charmap/charmap.go generated vendored Normal file
View File

@@ -0,0 +1,249 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:generate go run maketables.go
// Package charmap provides simple character encodings such as IBM Code Page 437
// and Windows 1252.
package charmap // import "golang.org/x/text/encoding/charmap"
import (
"unicode/utf8"
"golang.org/x/text/encoding"
"golang.org/x/text/encoding/internal"
"golang.org/x/text/encoding/internal/identifier"
"golang.org/x/text/transform"
)
// These encodings vary only in the way clients should interpret them. Their
// coded character set is identical and a single implementation can be shared.
var (
// ISO8859_6E is the ISO 8859-6E encoding.
ISO8859_6E encoding.Encoding = &iso8859_6E
// ISO8859_6I is the ISO 8859-6I encoding.
ISO8859_6I encoding.Encoding = &iso8859_6I
// ISO8859_8E is the ISO 8859-8E encoding.
ISO8859_8E encoding.Encoding = &iso8859_8E
// ISO8859_8I is the ISO 8859-8I encoding.
ISO8859_8I encoding.Encoding = &iso8859_8I
iso8859_6E = internal.Encoding{
Encoding: ISO8859_6,
Name: "ISO-8859-6E",
MIB: identifier.ISO88596E,
}
iso8859_6I = internal.Encoding{
Encoding: ISO8859_6,
Name: "ISO-8859-6I",
MIB: identifier.ISO88596I,
}
iso8859_8E = internal.Encoding{
Encoding: ISO8859_8,
Name: "ISO-8859-8E",
MIB: identifier.ISO88598E,
}
iso8859_8I = internal.Encoding{
Encoding: ISO8859_8,
Name: "ISO-8859-8I",
MIB: identifier.ISO88598I,
}
)
// All is a list of all defined encodings in this package.
var All []encoding.Encoding = listAll
// TODO: implement these encodings, in order of importance.
// ASCII, ISO8859_1: Rather common. Close to Windows 1252.
// ISO8859_9: Close to Windows 1254.
// utf8Enc holds a rune's UTF-8 encoding in data[:len].
type utf8Enc struct {
len uint8
data [3]byte
}
// Charmap is an 8-bit character set encoding.
type Charmap struct {
// name is the encoding's name.
name string
// mib is the encoding type of this encoder.
mib identifier.MIB
// asciiSuperset states whether the encoding is a superset of ASCII.
asciiSuperset bool
// low is the lower bound of the encoded byte for a non-ASCII rune. If
// Charmap.asciiSuperset is true then this will be 0x80, otherwise 0x00.
low uint8
// replacement is the encoded replacement character.
replacement byte
// decode is the map from encoded byte to UTF-8.
decode [256]utf8Enc
// encoding is the map from runes to encoded bytes. Each entry is a
// uint32: the high 8 bits are the encoded byte and the low 24 bits are
// the rune. The table entries are sorted by ascending rune.
encode [256]uint32
}
// NewDecoder implements the encoding.Encoding interface.
func (m *Charmap) NewDecoder() *encoding.Decoder {
return &encoding.Decoder{Transformer: charmapDecoder{charmap: m}}
}
// NewEncoder implements the encoding.Encoding interface.
func (m *Charmap) NewEncoder() *encoding.Encoder {
return &encoding.Encoder{Transformer: charmapEncoder{charmap: m}}
}
// String returns the Charmap's name.
func (m *Charmap) String() string {
return m.name
}
// ID implements an internal interface.
func (m *Charmap) ID() (mib identifier.MIB, other string) {
return m.mib, ""
}
// charmapDecoder implements transform.Transformer by decoding to UTF-8.
type charmapDecoder struct {
transform.NopResetter
charmap *Charmap
}
func (m charmapDecoder) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
for i, c := range src {
if m.charmap.asciiSuperset && c < utf8.RuneSelf {
if nDst >= len(dst) {
err = transform.ErrShortDst
break
}
dst[nDst] = c
nDst++
nSrc = i + 1
continue
}
decode := &m.charmap.decode[c]
n := int(decode.len)
if nDst+n > len(dst) {
err = transform.ErrShortDst
break
}
// It's 15% faster to avoid calling copy for these tiny slices.
for j := 0; j < n; j++ {
dst[nDst] = decode.data[j]
nDst++
}
nSrc = i + 1
}
return nDst, nSrc, err
}
// DecodeByte returns the Charmap's rune decoding of the byte b.
func (m *Charmap) DecodeByte(b byte) rune {
switch x := &m.decode[b]; x.len {
case 1:
return rune(x.data[0])
case 2:
return rune(x.data[0]&0x1f)<<6 | rune(x.data[1]&0x3f)
default:
return rune(x.data[0]&0x0f)<<12 | rune(x.data[1]&0x3f)<<6 | rune(x.data[2]&0x3f)
}
}
// charmapEncoder implements transform.Transformer by encoding from UTF-8.
type charmapEncoder struct {
transform.NopResetter
charmap *Charmap
}
func (m charmapEncoder) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
r, size := rune(0), 0
loop:
for nSrc < len(src) {
if nDst >= len(dst) {
err = transform.ErrShortDst
break
}
r = rune(src[nSrc])
// Decode a 1-byte rune.
if r < utf8.RuneSelf {
if m.charmap.asciiSuperset {
nSrc++
dst[nDst] = uint8(r)
nDst++
continue
}
size = 1
} else {
// Decode a multi-byte rune.
r, size = utf8.DecodeRune(src[nSrc:])
if size == 1 {
// All valid runes of size 1 (those below utf8.RuneSelf) were
// handled above. We have invalid UTF-8 or we haven't seen the
// full character yet.
if !atEOF && !utf8.FullRune(src[nSrc:]) {
err = transform.ErrShortSrc
} else {
err = internal.RepertoireError(m.charmap.replacement)
}
break
}
}
// Binary search in [low, high) for that rune in the m.charmap.encode table.
for low, high := int(m.charmap.low), 0x100; ; {
if low >= high {
err = internal.RepertoireError(m.charmap.replacement)
break loop
}
mid := (low + high) / 2
got := m.charmap.encode[mid]
gotRune := rune(got & (1<<24 - 1))
if gotRune < r {
low = mid + 1
} else if gotRune > r {
high = mid
} else {
dst[nDst] = byte(got >> 24)
nDst++
break
}
}
nSrc += size
}
return nDst, nSrc, err
}
// EncodeRune returns the Charmap's byte encoding of the rune r. ok is whether
// r is in the Charmap's repertoire. If not, b is set to the Charmap's
// replacement byte. This is often the ASCII substitute character '\x1a'.
func (m *Charmap) EncodeRune(r rune) (b byte, ok bool) {
if r < utf8.RuneSelf && m.asciiSuperset {
return byte(r), true
}
for low, high := int(m.low), 0x100; ; {
if low >= high {
return m.replacement, false
}
mid := (low + high) / 2
got := m.encode[mid]
gotRune := rune(got & (1<<24 - 1))
if gotRune < r {
low = mid + 1
} else if gotRune > r {
high = mid
} else {
return byte(got >> 24), true
}
}
}

7410
vendor/golang.org/x/text/encoding/charmap/tables.go generated vendored Normal file
View File

File diff suppressed because it is too large Load Diff

335
vendor/golang.org/x/text/encoding/encoding.go generated vendored Normal file
View File

@@ -0,0 +1,335 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package encoding defines an interface for character encodings, such as Shift
// JIS and Windows 1252, that can convert to and from UTF-8.
//
// Encoding implementations are provided in other packages, such as
// golang.org/x/text/encoding/charmap and
// golang.org/x/text/encoding/japanese.
package encoding // import "golang.org/x/text/encoding"
import (
"errors"
"io"
"strconv"
"unicode/utf8"
"golang.org/x/text/encoding/internal/identifier"
"golang.org/x/text/transform"
)
// TODO:
// - There seems to be some inconsistency in when decoders return errors
// and when not. Also documentation seems to suggest they shouldn't return
// errors at all (except for UTF-16).
// - Encoders seem to rely on or at least benefit from the input being in NFC
// normal form. Perhaps add an example how users could prepare their output.
// Encoding is a character set encoding that can be transformed to and from
// UTF-8.
type Encoding interface {
// NewDecoder returns a Decoder.
NewDecoder() *Decoder
// NewEncoder returns an Encoder.
NewEncoder() *Encoder
}
// A Decoder converts bytes to UTF-8. It implements transform.Transformer.
//
// Transforming source bytes that are not of that encoding will not result in an
// error per se. Each byte that cannot be transcoded will be represented in the
// output by the UTF-8 encoding of '\uFFFD', the replacement rune.
type Decoder struct {
transform.Transformer
// This forces external creators of Decoders to use names in struct
// initializers, allowing for future extendibility without having to break
// code.
_ struct{}
}
// Bytes converts the given encoded bytes to UTF-8. It returns the converted
// bytes or nil, err if any error occurred.
func (d *Decoder) Bytes(b []byte) ([]byte, error) {
b, _, err := transform.Bytes(d, b)
if err != nil {
return nil, err
}
return b, nil
}
// String converts the given encoded string to UTF-8. It returns the converted
// string or "", err if any error occurred.
func (d *Decoder) String(s string) (string, error) {
s, _, err := transform.String(d, s)
if err != nil {
return "", err
}
return s, nil
}
// Reader wraps another Reader to decode its bytes.
//
// The Decoder may not be used for any other operation as long as the returned
// Reader is in use.
func (d *Decoder) Reader(r io.Reader) io.Reader {
return transform.NewReader(r, d)
}
// An Encoder converts bytes from UTF-8. It implements transform.Transformer.
//
// Each rune that cannot be transcoded will result in an error. In this case,
// the transform will consume all source byte up to, not including the offending
// rune. Transforming source bytes that are not valid UTF-8 will be replaced by
// `\uFFFD`. To return early with an error instead, use transform.Chain to
// preprocess the data with a UTF8Validator.
type Encoder struct {
transform.Transformer
// This forces external creators of Encoders to use names in struct
// initializers, allowing for future extendibility without having to break
// code.
_ struct{}
}
// Bytes converts bytes from UTF-8. It returns the converted bytes or nil, err if
// any error occurred.
func (e *Encoder) Bytes(b []byte) ([]byte, error) {
b, _, err := transform.Bytes(e, b)
if err != nil {
return nil, err
}
return b, nil
}
// String converts a string from UTF-8. It returns the converted string or
// "", err if any error occurred.
func (e *Encoder) String(s string) (string, error) {
s, _, err := transform.String(e, s)
if err != nil {
return "", err
}
return s, nil
}
// Writer wraps another Writer to encode its UTF-8 output.
//
// The Encoder may not be used for any other operation as long as the returned
// Writer is in use.
func (e *Encoder) Writer(w io.Writer) io.Writer {
return transform.NewWriter(w, e)
}
// ASCIISub is the ASCII substitute character, as recommended by
// https://unicode.org/reports/tr36/#Text_Comparison
const ASCIISub = '\x1a'
// Nop is the nop encoding. Its transformed bytes are the same as the source
// bytes; it does not replace invalid UTF-8 sequences.
var Nop Encoding = nop{}
type nop struct{}
func (nop) NewDecoder() *Decoder {
return &Decoder{Transformer: transform.Nop}
}
func (nop) NewEncoder() *Encoder {
return &Encoder{Transformer: transform.Nop}
}
// Replacement is the replacement encoding. Decoding from the replacement
// encoding yields a single '\uFFFD' replacement rune. Encoding from UTF-8 to
// the replacement encoding yields the same as the source bytes except that
// invalid UTF-8 is converted to '\uFFFD'.
//
// It is defined at http://encoding.spec.whatwg.org/#replacement
var Replacement Encoding = replacement{}
type replacement struct{}
func (replacement) NewDecoder() *Decoder {
return &Decoder{Transformer: replacementDecoder{}}
}
func (replacement) NewEncoder() *Encoder {
return &Encoder{Transformer: replacementEncoder{}}
}
func (replacement) ID() (mib identifier.MIB, other string) {
return identifier.Replacement, ""
}
type replacementDecoder struct{ transform.NopResetter }
func (replacementDecoder) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
if len(dst) < 3 {
return 0, 0, transform.ErrShortDst
}
if atEOF {
const fffd = "\ufffd"
dst[0] = fffd[0]
dst[1] = fffd[1]
dst[2] = fffd[2]
nDst = 3
}
return nDst, len(src), nil
}
type replacementEncoder struct{ transform.NopResetter }
func (replacementEncoder) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
r, size := rune(0), 0
for ; nSrc < len(src); nSrc += size {
r = rune(src[nSrc])
// Decode a 1-byte rune.
if r < utf8.RuneSelf {
size = 1
} else {
// Decode a multi-byte rune.
r, size = utf8.DecodeRune(src[nSrc:])
if size == 1 {
// All valid runes of size 1 (those below utf8.RuneSelf) were
// handled above. We have invalid UTF-8 or we haven't seen the
// full character yet.
if !atEOF && !utf8.FullRune(src[nSrc:]) {
err = transform.ErrShortSrc
break
}
r = '\ufffd'
}
}
if nDst+utf8.RuneLen(r) > len(dst) {
err = transform.ErrShortDst
break
}
nDst += utf8.EncodeRune(dst[nDst:], r)
}
return nDst, nSrc, err
}
// HTMLEscapeUnsupported wraps encoders to replace source runes outside the
// repertoire of the destination encoding with HTML escape sequences.
//
// This wrapper exists to comply to URL and HTML forms requiring a
// non-terminating legacy encoder. The produced sequences may lead to data
// loss as they are indistinguishable from legitimate input. To avoid this
// issue, use UTF-8 encodings whenever possible.
func HTMLEscapeUnsupported(e *Encoder) *Encoder {
return &Encoder{Transformer: &errorHandler{e, errorToHTML}}
}
// ReplaceUnsupported wraps encoders to replace source runes outside the
// repertoire of the destination encoding with an encoding-specific
// replacement.
//
// This wrapper is only provided for backwards compatibility and legacy
// handling. Its use is strongly discouraged. Use UTF-8 whenever possible.
func ReplaceUnsupported(e *Encoder) *Encoder {
return &Encoder{Transformer: &errorHandler{e, errorToReplacement}}
}
type errorHandler struct {
*Encoder
handler func(dst []byte, r rune, err repertoireError) (n int, ok bool)
}
// TODO: consider making this error public in some form.
type repertoireError interface {
Replacement() byte
}
func (h errorHandler) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
nDst, nSrc, err = h.Transformer.Transform(dst, src, atEOF)
for err != nil {
rerr, ok := err.(repertoireError)
if !ok {
return nDst, nSrc, err
}
r, sz := utf8.DecodeRune(src[nSrc:])
n, ok := h.handler(dst[nDst:], r, rerr)
if !ok {
return nDst, nSrc, transform.ErrShortDst
}
err = nil
nDst += n
if nSrc += sz; nSrc < len(src) {
var dn, sn int
dn, sn, err = h.Transformer.Transform(dst[nDst:], src[nSrc:], atEOF)
nDst += dn
nSrc += sn
}
}
return nDst, nSrc, err
}
func errorToHTML(dst []byte, r rune, err repertoireError) (n int, ok bool) {
buf := [8]byte{}
b := strconv.AppendUint(buf[:0], uint64(r), 10)
if n = len(b) + len("&#;"); n >= len(dst) {
return 0, false
}
dst[0] = '&'
dst[1] = '#'
dst[copy(dst[2:], b)+2] = ';'
return n, true
}
func errorToReplacement(dst []byte, r rune, err repertoireError) (n int, ok bool) {
if len(dst) == 0 {
return 0, false
}
dst[0] = err.Replacement()
return 1, true
}
// ErrInvalidUTF8 means that a transformer encountered invalid UTF-8.
var ErrInvalidUTF8 = errors.New("encoding: invalid UTF-8")
// UTF8Validator is a transformer that returns ErrInvalidUTF8 on the first
// input byte that is not valid UTF-8.
var UTF8Validator transform.Transformer = utf8Validator{}
type utf8Validator struct{ transform.NopResetter }
func (utf8Validator) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
n := len(src)
if n > len(dst) {
n = len(dst)
}
for i := 0; i < n; {
if c := src[i]; c < utf8.RuneSelf {
dst[i] = c
i++
continue
}
_, size := utf8.DecodeRune(src[i:])
if size == 1 {
// All valid runes of size 1 (those below utf8.RuneSelf) were
// handled above. We have invalid UTF-8 or we haven't seen the
// full character yet.
err = ErrInvalidUTF8
if !atEOF && !utf8.FullRune(src[i:]) {
err = transform.ErrShortSrc
}
return i, i, err
}
if i+size > len(dst) {
return i, i, transform.ErrShortDst
}
for ; size > 0; size-- {
dst[i] = src[i]
i++
}
}
if len(src) > len(dst) {
err = transform.ErrShortDst
}
return n, n, err
}

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// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:generate go run gen.go
// Package identifier defines the contract between implementations of Encoding
// and Index by defining identifiers that uniquely identify standardized coded
// character sets (CCS) and character encoding schemes (CES), which we will
// together refer to as encodings, for which Encoding implementations provide
// converters to and from UTF-8. This package is typically only of concern to
// implementers of Indexes and Encodings.
//
// One part of the identifier is the MIB code, which is defined by IANA and
// uniquely identifies a CCS or CES. Each code is associated with data that
// references authorities, official documentation as well as aliases and MIME
// names.
//
// Not all CESs are covered by the IANA registry. The "other" string that is
// returned by ID can be used to identify other character sets or versions of
// existing ones.
//
// It is recommended that each package that provides a set of Encodings provide
// the All and Common variables to reference all supported encodings and
// commonly used subset. This allows Index implementations to include all
// available encodings without explicitly referencing or knowing about them.
package identifier
// Note: this package is internal, but could be made public if there is a need
// for writing third-party Indexes and Encodings.
// References:
// - http://source.icu-project.org/repos/icu/icu/trunk/source/data/mappings/convrtrs.txt
// - http://www.iana.org/assignments/character-sets/character-sets.xhtml
// - http://www.iana.org/assignments/ianacharset-mib/ianacharset-mib
// - http://www.ietf.org/rfc/rfc2978.txt
// - https://www.unicode.org/reports/tr22/
// - http://www.w3.org/TR/encoding/
// - https://encoding.spec.whatwg.org/
// - https://encoding.spec.whatwg.org/encodings.json
// - https://tools.ietf.org/html/rfc6657#section-5
// Interface can be implemented by Encodings to define the CCS or CES for which
// it implements conversions.
type Interface interface {
// ID returns an encoding identifier. Exactly one of the mib and other
// values should be non-zero.
//
// In the usual case it is only necessary to indicate the MIB code. The
// other string can be used to specify encodings for which there is no MIB,
// such as "x-mac-dingbat".
//
// The other string may only contain the characters a-z, A-Z, 0-9, - and _.
ID() (mib MIB, other string)
// NOTE: the restrictions on the encoding are to allow extending the syntax
// with additional information such as versions, vendors and other variants.
}
// A MIB identifies an encoding. It is derived from the IANA MIB codes and adds
// some identifiers for some encodings that are not covered by the IANA
// standard.
//
// See http://www.iana.org/assignments/ianacharset-mib.
type MIB uint16
// These additional MIB types are not defined in IANA. They are added because
// they are common and defined within the text repo.
const (
// Unofficial marks the start of encodings not registered by IANA.
Unofficial MIB = 10000 + iota
// Replacement is the WhatWG replacement encoding.
Replacement
// XUserDefined is the code for x-user-defined.
XUserDefined
// MacintoshCyrillic is the code for x-mac-cyrillic.
MacintoshCyrillic
)

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// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package internal contains code that is shared among encoding implementations.
package internal
import (
"golang.org/x/text/encoding"
"golang.org/x/text/encoding/internal/identifier"
"golang.org/x/text/transform"
)
// Encoding is an implementation of the Encoding interface that adds the String
// and ID methods to an existing encoding.
type Encoding struct {
encoding.Encoding
Name string
MIB identifier.MIB
}
// _ verifies that Encoding implements identifier.Interface.
var _ identifier.Interface = (*Encoding)(nil)
func (e *Encoding) String() string {
return e.Name
}
func (e *Encoding) ID() (mib identifier.MIB, other string) {
return e.MIB, ""
}
// SimpleEncoding is an Encoding that combines two Transformers.
type SimpleEncoding struct {
Decoder transform.Transformer
Encoder transform.Transformer
}
func (e *SimpleEncoding) NewDecoder() *encoding.Decoder {
return &encoding.Decoder{Transformer: e.Decoder}
}
func (e *SimpleEncoding) NewEncoder() *encoding.Encoder {
return &encoding.Encoder{Transformer: e.Encoder}
}
// FuncEncoding is an Encoding that combines two functions returning a new
// Transformer.
type FuncEncoding struct {
Decoder func() transform.Transformer
Encoder func() transform.Transformer
}
func (e FuncEncoding) NewDecoder() *encoding.Decoder {
return &encoding.Decoder{Transformer: e.Decoder()}
}
func (e FuncEncoding) NewEncoder() *encoding.Encoder {
return &encoding.Encoder{Transformer: e.Encoder()}
}
// A RepertoireError indicates a rune is not in the repertoire of a destination
// encoding. It is associated with an encoding-specific suggested replacement
// byte.
type RepertoireError byte
// Error implements the error interface.
func (r RepertoireError) Error() string {
return "encoding: rune not supported by encoding."
}
// Replacement returns the replacement string associated with this error.
func (r RepertoireError) Replacement() byte { return byte(r) }
var ErrASCIIReplacement = RepertoireError(encoding.ASCIISub)

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// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package transform provides reader and writer wrappers that transform the
// bytes passing through as well as various transformations. Example
// transformations provided by other packages include normalization and
// conversion between character sets.
package transform // import "golang.org/x/text/transform"
import (
"bytes"
"errors"
"io"
"unicode/utf8"
)
var (
// ErrShortDst means that the destination buffer was too short to
// receive all of the transformed bytes.
ErrShortDst = errors.New("transform: short destination buffer")
// ErrShortSrc means that the source buffer has insufficient data to
// complete the transformation.
ErrShortSrc = errors.New("transform: short source buffer")
// ErrEndOfSpan means that the input and output (the transformed input)
// are not identical.
ErrEndOfSpan = errors.New("transform: input and output are not identical")
// errInconsistentByteCount means that Transform returned success (nil
// error) but also returned nSrc inconsistent with the src argument.
errInconsistentByteCount = errors.New("transform: inconsistent byte count returned")
// errShortInternal means that an internal buffer is not large enough
// to make progress and the Transform operation must be aborted.
errShortInternal = errors.New("transform: short internal buffer")
)
// Transformer transforms bytes.
type Transformer interface {
// Transform writes to dst the transformed bytes read from src, and
// returns the number of dst bytes written and src bytes read. The
// atEOF argument tells whether src represents the last bytes of the
// input.
//
// Callers should always process the nDst bytes produced and account
// for the nSrc bytes consumed before considering the error err.
//
// A nil error means that all of the transformed bytes (whether freshly
// transformed from src or left over from previous Transform calls)
// were written to dst. A nil error can be returned regardless of
// whether atEOF is true. If err is nil then nSrc must equal len(src);
// the converse is not necessarily true.
//
// ErrShortDst means that dst was too short to receive all of the
// transformed bytes. ErrShortSrc means that src had insufficient data
// to complete the transformation. If both conditions apply, then
// either error may be returned. Other than the error conditions listed
// here, implementations are free to report other errors that arise.
Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error)
// Reset resets the state and allows a Transformer to be reused.
Reset()
}
// SpanningTransformer extends the Transformer interface with a Span method
// that determines how much of the input already conforms to the Transformer.
type SpanningTransformer interface {
Transformer
// Span returns a position in src such that transforming src[:n] results in
// identical output src[:n] for these bytes. It does not necessarily return
// the largest such n. The atEOF argument tells whether src represents the
// last bytes of the input.
//
// Callers should always account for the n bytes consumed before
// considering the error err.
//
// A nil error means that all input bytes are known to be identical to the
// output produced by the Transformer. A nil error can be returned
// regardless of whether atEOF is true. If err is nil, then n must
// equal len(src); the converse is not necessarily true.
//
// ErrEndOfSpan means that the Transformer output may differ from the
// input after n bytes. Note that n may be len(src), meaning that the output
// would contain additional bytes after otherwise identical output.
// ErrShortSrc means that src had insufficient data to determine whether the
// remaining bytes would change. Other than the error conditions listed
// here, implementations are free to report other errors that arise.
//
// Calling Span can modify the Transformer state as a side effect. In
// effect, it does the transformation just as calling Transform would, only
// without copying to a destination buffer and only up to a point it can
// determine the input and output bytes are the same. This is obviously more
// limited than calling Transform, but can be more efficient in terms of
// copying and allocating buffers. Calls to Span and Transform may be
// interleaved.
Span(src []byte, atEOF bool) (n int, err error)
}
// NopResetter can be embedded by implementations of Transformer to add a nop
// Reset method.
type NopResetter struct{}
// Reset implements the Reset method of the Transformer interface.
func (NopResetter) Reset() {}
// Reader wraps another io.Reader by transforming the bytes read.
type Reader struct {
r io.Reader
t Transformer
err error
// dst[dst0:dst1] contains bytes that have been transformed by t but
// not yet copied out via Read.
dst []byte
dst0, dst1 int
// src[src0:src1] contains bytes that have been read from r but not
// yet transformed through t.
src []byte
src0, src1 int
// transformComplete is whether the transformation is complete,
// regardless of whether or not it was successful.
transformComplete bool
}
const defaultBufSize = 4096
// NewReader returns a new Reader that wraps r by transforming the bytes read
// via t. It calls Reset on t.
func NewReader(r io.Reader, t Transformer) *Reader {
t.Reset()
return &Reader{
r: r,
t: t,
dst: make([]byte, defaultBufSize),
src: make([]byte, defaultBufSize),
}
}
// Read implements the io.Reader interface.
func (r *Reader) Read(p []byte) (int, error) {
n, err := 0, error(nil)
for {
// Copy out any transformed bytes and return the final error if we are done.
if r.dst0 != r.dst1 {
n = copy(p, r.dst[r.dst0:r.dst1])
r.dst0 += n
if r.dst0 == r.dst1 && r.transformComplete {
return n, r.err
}
return n, nil
} else if r.transformComplete {
return 0, r.err
}
// Try to transform some source bytes, or to flush the transformer if we
// are out of source bytes. We do this even if r.r.Read returned an error.
// As the io.Reader documentation says, "process the n > 0 bytes returned
// before considering the error".
if r.src0 != r.src1 || r.err != nil {
r.dst0 = 0
r.dst1, n, err = r.t.Transform(r.dst, r.src[r.src0:r.src1], r.err == io.EOF)
r.src0 += n
switch {
case err == nil:
if r.src0 != r.src1 {
r.err = errInconsistentByteCount
}
// The Transform call was successful; we are complete if we
// cannot read more bytes into src.
r.transformComplete = r.err != nil
continue
case err == ErrShortDst && (r.dst1 != 0 || n != 0):
// Make room in dst by copying out, and try again.
continue
case err == ErrShortSrc && r.src1-r.src0 != len(r.src) && r.err == nil:
// Read more bytes into src via the code below, and try again.
default:
r.transformComplete = true
// The reader error (r.err) takes precedence over the
// transformer error (err) unless r.err is nil or io.EOF.
if r.err == nil || r.err == io.EOF {
r.err = err
}
continue
}
}
// Move any untransformed source bytes to the start of the buffer
// and read more bytes.
if r.src0 != 0 {
r.src0, r.src1 = 0, copy(r.src, r.src[r.src0:r.src1])
}
n, r.err = r.r.Read(r.src[r.src1:])
r.src1 += n
}
}
// TODO: implement ReadByte (and ReadRune??).
// Writer wraps another io.Writer by transforming the bytes read.
// The user needs to call Close to flush unwritten bytes that may
// be buffered.
type Writer struct {
w io.Writer
t Transformer
dst []byte
// src[:n] contains bytes that have not yet passed through t.
src []byte
n int
}
// NewWriter returns a new Writer that wraps w by transforming the bytes written
// via t. It calls Reset on t.
func NewWriter(w io.Writer, t Transformer) *Writer {
t.Reset()
return &Writer{
w: w,
t: t,
dst: make([]byte, defaultBufSize),
src: make([]byte, defaultBufSize),
}
}
// Write implements the io.Writer interface. If there are not enough
// bytes available to complete a Transform, the bytes will be buffered
// for the next write. Call Close to convert the remaining bytes.
func (w *Writer) Write(data []byte) (n int, err error) {
src := data
if w.n > 0 {
// Append bytes from data to the last remainder.
// TODO: limit the amount copied on first try.
n = copy(w.src[w.n:], data)
w.n += n
src = w.src[:w.n]
}
for {
nDst, nSrc, err := w.t.Transform(w.dst, src, false)
if _, werr := w.w.Write(w.dst[:nDst]); werr != nil {
return n, werr
}
src = src[nSrc:]
if w.n == 0 {
n += nSrc
} else if len(src) <= n {
// Enough bytes from w.src have been consumed. We make src point
// to data instead to reduce the copying.
w.n = 0
n -= len(src)
src = data[n:]
if n < len(data) && (err == nil || err == ErrShortSrc) {
continue
}
}
switch err {
case ErrShortDst:
// This error is okay as long as we are making progress.
if nDst > 0 || nSrc > 0 {
continue
}
case ErrShortSrc:
if len(src) < len(w.src) {
m := copy(w.src, src)
// If w.n > 0, bytes from data were already copied to w.src and n
// was already set to the number of bytes consumed.
if w.n == 0 {
n += m
}
w.n = m
err = nil
} else if nDst > 0 || nSrc > 0 {
// Not enough buffer to store the remainder. Keep processing as
// long as there is progress. Without this case, transforms that
// require a lookahead larger than the buffer may result in an
// error. This is not something one may expect to be common in
// practice, but it may occur when buffers are set to small
// sizes during testing.
continue
}
case nil:
if w.n > 0 {
err = errInconsistentByteCount
}
}
return n, err
}
}
// Close implements the io.Closer interface.
func (w *Writer) Close() error {
src := w.src[:w.n]
for {
nDst, nSrc, err := w.t.Transform(w.dst, src, true)
if _, werr := w.w.Write(w.dst[:nDst]); werr != nil {
return werr
}
if err != ErrShortDst {
return err
}
src = src[nSrc:]
}
}
type nop struct{ NopResetter }
func (nop) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
n := copy(dst, src)
if n < len(src) {
err = ErrShortDst
}
return n, n, err
}
func (nop) Span(src []byte, atEOF bool) (n int, err error) {
return len(src), nil
}
type discard struct{ NopResetter }
func (discard) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
return 0, len(src), nil
}
var (
// Discard is a Transformer for which all Transform calls succeed
// by consuming all bytes and writing nothing.
Discard Transformer = discard{}
// Nop is a SpanningTransformer that copies src to dst.
Nop SpanningTransformer = nop{}
)
// chain is a sequence of links. A chain with N Transformers has N+1 links and
// N+1 buffers. Of those N+1 buffers, the first and last are the src and dst
// buffers given to chain.Transform and the middle N-1 buffers are intermediate
// buffers owned by the chain. The i'th link transforms bytes from the i'th
// buffer chain.link[i].b at read offset chain.link[i].p to the i+1'th buffer
// chain.link[i+1].b at write offset chain.link[i+1].n, for i in [0, N).
type chain struct {
link []link
err error
// errStart is the index at which the error occurred plus 1. Processing
// errStart at this level at the next call to Transform. As long as
// errStart > 0, chain will not consume any more source bytes.
errStart int
}
func (c *chain) fatalError(errIndex int, err error) {
if i := errIndex + 1; i > c.errStart {
c.errStart = i
c.err = err
}
}
type link struct {
t Transformer
// b[p:n] holds the bytes to be transformed by t.
b []byte
p int
n int
}
func (l *link) src() []byte {
return l.b[l.p:l.n]
}
func (l *link) dst() []byte {
return l.b[l.n:]
}
// Chain returns a Transformer that applies t in sequence.
func Chain(t ...Transformer) Transformer {
if len(t) == 0 {
return nop{}
}
c := &chain{link: make([]link, len(t)+1)}
for i, tt := range t {
c.link[i].t = tt
}
// Allocate intermediate buffers.
b := make([][defaultBufSize]byte, len(t)-1)
for i := range b {
c.link[i+1].b = b[i][:]
}
return c
}
// Reset resets the state of Chain. It calls Reset on all the Transformers.
func (c *chain) Reset() {
for i, l := range c.link {
if l.t != nil {
l.t.Reset()
}
c.link[i].p, c.link[i].n = 0, 0
}
}
// TODO: make chain use Span (is going to be fun to implement!)
// Transform applies the transformers of c in sequence.
func (c *chain) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
// Set up src and dst in the chain.
srcL := &c.link[0]
dstL := &c.link[len(c.link)-1]
srcL.b, srcL.p, srcL.n = src, 0, len(src)
dstL.b, dstL.n = dst, 0
var lastFull, needProgress bool // for detecting progress
// i is the index of the next Transformer to apply, for i in [low, high].
// low is the lowest index for which c.link[low] may still produce bytes.
// high is the highest index for which c.link[high] has a Transformer.
// The error returned by Transform determines whether to increase or
// decrease i. We try to completely fill a buffer before converting it.
for low, i, high := c.errStart, c.errStart, len(c.link)-2; low <= i && i <= high; {
in, out := &c.link[i], &c.link[i+1]
nDst, nSrc, err0 := in.t.Transform(out.dst(), in.src(), atEOF && low == i)
out.n += nDst
in.p += nSrc
if i > 0 && in.p == in.n {
in.p, in.n = 0, 0
}
needProgress, lastFull = lastFull, false
switch err0 {
case ErrShortDst:
// Process the destination buffer next. Return if we are already
// at the high index.
if i == high {
return dstL.n, srcL.p, ErrShortDst
}
if out.n != 0 {
i++
// If the Transformer at the next index is not able to process any
// source bytes there is nothing that can be done to make progress
// and the bytes will remain unprocessed. lastFull is used to
// detect this and break out of the loop with a fatal error.
lastFull = true
continue
}
// The destination buffer was too small, but is completely empty.
// Return a fatal error as this transformation can never complete.
c.fatalError(i, errShortInternal)
case ErrShortSrc:
if i == 0 {
// Save ErrShortSrc in err. All other errors take precedence.
err = ErrShortSrc
break
}
// Source bytes were depleted before filling up the destination buffer.
// Verify we made some progress, move the remaining bytes to the errStart
// and try to get more source bytes.
if needProgress && nSrc == 0 || in.n-in.p == len(in.b) {
// There were not enough source bytes to proceed while the source
// buffer cannot hold any more bytes. Return a fatal error as this
// transformation can never complete.
c.fatalError(i, errShortInternal)
break
}
// in.b is an internal buffer and we can make progress.
in.p, in.n = 0, copy(in.b, in.src())
fallthrough
case nil:
// if i == low, we have depleted the bytes at index i or any lower levels.
// In that case we increase low and i. In all other cases we decrease i to
// fetch more bytes before proceeding to the next index.
if i > low {
i--
continue
}
default:
c.fatalError(i, err0)
}
// Exhausted level low or fatal error: increase low and continue
// to process the bytes accepted so far.
i++
low = i
}
// If c.errStart > 0, this means we found a fatal error. We will clear
// all upstream buffers. At this point, no more progress can be made
// downstream, as Transform would have bailed while handling ErrShortDst.
if c.errStart > 0 {
for i := 1; i < c.errStart; i++ {
c.link[i].p, c.link[i].n = 0, 0
}
err, c.errStart, c.err = c.err, 0, nil
}
return dstL.n, srcL.p, err
}
// Deprecated: Use runes.Remove instead.
func RemoveFunc(f func(r rune) bool) Transformer {
return removeF(f)
}
type removeF func(r rune) bool
func (removeF) Reset() {}
// Transform implements the Transformer interface.
func (t removeF) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
for r, sz := rune(0), 0; len(src) > 0; src = src[sz:] {
if r = rune(src[0]); r < utf8.RuneSelf {
sz = 1
} else {
r, sz = utf8.DecodeRune(src)
if sz == 1 {
// Invalid rune.
if !atEOF && !utf8.FullRune(src) {
err = ErrShortSrc
break
}
// We replace illegal bytes with RuneError. Not doing so might
// otherwise turn a sequence of invalid UTF-8 into valid UTF-8.
// The resulting byte sequence may subsequently contain runes
// for which t(r) is true that were passed unnoticed.
if !t(r) {
if nDst+3 > len(dst) {
err = ErrShortDst
break
}
nDst += copy(dst[nDst:], "\uFFFD")
}
nSrc++
continue
}
}
if !t(r) {
if nDst+sz > len(dst) {
err = ErrShortDst
break
}
nDst += copy(dst[nDst:], src[:sz])
}
nSrc += sz
}
return
}
// grow returns a new []byte that is longer than b, and copies the first n bytes
// of b to the start of the new slice.
func grow(b []byte, n int) []byte {
m := len(b)
if m <= 32 {
m = 64
} else if m <= 256 {
m *= 2
} else {
m += m >> 1
}
buf := make([]byte, m)
copy(buf, b[:n])
return buf
}
const initialBufSize = 128
// String returns a string with the result of converting s[:n] using t, where
// n <= len(s). If err == nil, n will be len(s). It calls Reset on t.
func String(t Transformer, s string) (result string, n int, err error) {
t.Reset()
if s == "" {
// Fast path for the common case for empty input. Results in about a
// 86% reduction of running time for BenchmarkStringLowerEmpty.
if _, _, err := t.Transform(nil, nil, true); err == nil {
return "", 0, nil
}
}
// Allocate only once. Note that both dst and src escape when passed to
// Transform.
buf := [2 * initialBufSize]byte{}
dst := buf[:initialBufSize:initialBufSize]
src := buf[initialBufSize : 2*initialBufSize]
// The input string s is transformed in multiple chunks (starting with a
// chunk size of initialBufSize). nDst and nSrc are per-chunk (or
// per-Transform-call) indexes, pDst and pSrc are overall indexes.
nDst, nSrc := 0, 0
pDst, pSrc := 0, 0
// pPrefix is the length of a common prefix: the first pPrefix bytes of the
// result will equal the first pPrefix bytes of s. It is not guaranteed to
// be the largest such value, but if pPrefix, len(result) and len(s) are
// all equal after the final transform (i.e. calling Transform with atEOF
// being true returned nil error) then we don't need to allocate a new
// result string.
pPrefix := 0
for {
// Invariant: pDst == pPrefix && pSrc == pPrefix.
n := copy(src, s[pSrc:])
nDst, nSrc, err = t.Transform(dst, src[:n], pSrc+n == len(s))
pDst += nDst
pSrc += nSrc
// TODO: let transformers implement an optional Spanner interface, akin
// to norm's QuickSpan. This would even allow us to avoid any allocation.
if !bytes.Equal(dst[:nDst], src[:nSrc]) {
break
}
pPrefix = pSrc
if err == ErrShortDst {
// A buffer can only be short if a transformer modifies its input.
break
} else if err == ErrShortSrc {
if nSrc == 0 {
// No progress was made.
break
}
// Equal so far and !atEOF, so continue checking.
} else if err != nil || pPrefix == len(s) {
return string(s[:pPrefix]), pPrefix, err
}
}
// Post-condition: pDst == pPrefix + nDst && pSrc == pPrefix + nSrc.
// We have transformed the first pSrc bytes of the input s to become pDst
// transformed bytes. Those transformed bytes are discontiguous: the first
// pPrefix of them equal s[:pPrefix] and the last nDst of them equal
// dst[:nDst]. We copy them around, into a new dst buffer if necessary, so
// that they become one contiguous slice: dst[:pDst].
if pPrefix != 0 {
newDst := dst
if pDst > len(newDst) {
newDst = make([]byte, len(s)+nDst-nSrc)
}
copy(newDst[pPrefix:pDst], dst[:nDst])
copy(newDst[:pPrefix], s[:pPrefix])
dst = newDst
}
// Prevent duplicate Transform calls with atEOF being true at the end of
// the input. Also return if we have an unrecoverable error.
if (err == nil && pSrc == len(s)) ||
(err != nil && err != ErrShortDst && err != ErrShortSrc) {
return string(dst[:pDst]), pSrc, err
}
// Transform the remaining input, growing dst and src buffers as necessary.
for {
n := copy(src, s[pSrc:])
atEOF := pSrc+n == len(s)
nDst, nSrc, err := t.Transform(dst[pDst:], src[:n], atEOF)
pDst += nDst
pSrc += nSrc
// If we got ErrShortDst or ErrShortSrc, do not grow as long as we can
// make progress. This may avoid excessive allocations.
if err == ErrShortDst {
if nDst == 0 {
dst = grow(dst, pDst)
}
} else if err == ErrShortSrc {
if atEOF {
return string(dst[:pDst]), pSrc, err
}
if nSrc == 0 {
src = grow(src, 0)
}
} else if err != nil || pSrc == len(s) {
return string(dst[:pDst]), pSrc, err
}
}
}
// Bytes returns a new byte slice with the result of converting b[:n] using t,
// where n <= len(b). If err == nil, n will be len(b). It calls Reset on t.
func Bytes(t Transformer, b []byte) (result []byte, n int, err error) {
return doAppend(t, 0, make([]byte, len(b)), b)
}
// Append appends the result of converting src[:n] using t to dst, where
// n <= len(src), If err == nil, n will be len(src). It calls Reset on t.
func Append(t Transformer, dst, src []byte) (result []byte, n int, err error) {
if len(dst) == cap(dst) {
n := len(src) + len(dst) // It is okay for this to be 0.
b := make([]byte, n)
dst = b[:copy(b, dst)]
}
return doAppend(t, len(dst), dst[:cap(dst)], src)
}
func doAppend(t Transformer, pDst int, dst, src []byte) (result []byte, n int, err error) {
t.Reset()
pSrc := 0
for {
nDst, nSrc, err := t.Transform(dst[pDst:], src[pSrc:], true)
pDst += nDst
pSrc += nSrc
if err != ErrShortDst {
return dst[:pDst], pSrc, err
}
// Grow the destination buffer, but do not grow as long as we can make
// progress. This may avoid excessive allocations.
if nDst == 0 {
dst = grow(dst, pDst)
}
}
}

15
vendor/modules.txt vendored
View File

@@ -1,7 +1,7 @@
# github.com/davecgh/go-spew v1.1.1
## explicit
github.com/davecgh/go-spew/spew
# github.com/eleksir/go-xmpp v1.5.0
# github.com/eleksir/go-xmpp v1.6.0
## explicit; go 1.20
github.com/eleksir/go-xmpp
# github.com/hjson/hjson-go v3.3.0+incompatible
@@ -10,18 +10,25 @@ github.com/hjson/hjson-go
# github.com/sirupsen/logrus v1.9.3
## explicit; go 1.13
github.com/sirupsen/logrus
# golang.org/x/crypto v0.12.0
# golang.org/x/crypto v0.13.0
## explicit; go 1.17
golang.org/x/crypto/pbkdf2
# golang.org/x/exp v0.0.0-20230817173708-d852ddb80c63
# golang.org/x/exp v0.0.0-20230905200255-921286631fa9
## explicit; go 1.20
golang.org/x/exp/constraints
golang.org/x/exp/slices
# golang.org/x/sys v0.11.0
# golang.org/x/sys v0.12.0
## explicit; go 1.17
golang.org/x/sys/internal/unsafeheader
golang.org/x/sys/unix
golang.org/x/sys/windows
# golang.org/x/text v0.13.0
## explicit; go 1.17
golang.org/x/text/encoding
golang.org/x/text/encoding/charmap
golang.org/x/text/encoding/internal
golang.org/x/text/encoding/internal/identifier
golang.org/x/text/transform
# gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7
## explicit
gopkg.in/tomb.v1