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126 lines
2.4 KiB
126 lines
2.4 KiB
// SIP Address Library
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//
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// For example:
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//
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// "J.A. Roberts Tunney" <sip:jtunney@bsdtelecom.net;isup-oli=29>;tag=deadbeef
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//
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// Roughly equates to:
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//
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// {Display: "J.A. Roberts Tunney",
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// Params: {"tag": "deadbeef"},
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// Uri: {Scheme: "sip",
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// User: "jtunney",
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// Pass: "",
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// Host: "bsdtelecom.net",
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// Port: "",
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// Params: {"isup-oli": "29"}}}
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//
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package sip
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import (
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"bytes"
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"github.com/jart/gosip/util"
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)
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// Represents a SIP Address Linked List
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type Addr struct {
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Uri *URI // never nil
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Display string // blank if not specified
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Params Params // these look like ;key=lol;rport;key=wut
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Next *Addr // for comma separated lists of addresses
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}
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//go:generate ragel -Z -G2 -o addr_parse.go addr_parse.rl
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func (addr *Addr) String() string {
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if addr == nil {
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return "<nil>"
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}
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var b bytes.Buffer
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addr.Append(&b)
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return b.String()
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}
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// Returns self if non-nil, otherwise other.
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func (addr *Addr) Or(other *Addr) *Addr {
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if addr == nil {
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return other
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}
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return addr
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}
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// Sets newly generated tag ID and returns self.
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func (addr *Addr) Tag() *Addr {
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addr.Params["tag"] = util.GenerateTag()
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return addr
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}
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// Reassembles a SIP address into a buffer.
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func (addr *Addr) Append(b *bytes.Buffer) error {
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if addr.Display != "" {
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b.WriteString("\"")
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b.WriteString(util.EscapeDisplay(addr.Display))
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b.WriteString("\" ")
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}
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b.WriteString("<")
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addr.Uri.Append(b)
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b.WriteString(">")
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addr.Params.AppendQuoted(b)
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if addr.Next != nil {
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b.WriteString(",")
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addr.Next.Append(b)
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}
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return nil
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}
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// Deep copies a new Addr object.
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func (addr *Addr) Copy() *Addr {
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if addr == nil {
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return nil
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}
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res := new(Addr)
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res.Uri = addr.Uri.Copy()
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res.Params = addr.Params.Copy()
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res.Next = addr.Next.Copy()
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return res
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}
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func (addr *Addr) CompareHostPort(other *Addr) bool {
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if addr != nil && other != nil {
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if addr.Uri.CompareHostPort(other.Uri) {
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return true
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}
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}
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return false
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}
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// Returns pointer to last addr in linked list.
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func (addr *Addr) Last() *Addr {
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if addr != nil {
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for ; addr.Next != nil; addr = addr.Next {
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}
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}
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return addr
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}
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// Returns number of items in the linked list.
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func (addr *Addr) Len() int {
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count := 0
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for ; addr != nil; addr = addr.Next {
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count++
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}
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return count
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}
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// Returns self with linked list reversed.
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func (addr *Addr) Reversed() *Addr {
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var res *Addr
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for ; addr != nil; addr = addr.Next {
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a := new(Addr)
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*a = *addr
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a.Next = res
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res = a
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}
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return res
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}
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