Fixing to have the proper version of go-imap from foxcpp.
This commit is contained in:
167
imap.go
167
imap.go
@@ -1,105 +1,106 @@
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// Package imap implements IMAP4rev2.
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//
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// IMAP4rev2 is defined in RFC 9051.
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//
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// This package contains types and functions common to both the client and
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// server. See the imapclient and imapserver sub-packages.
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// Package imap implements IMAP4rev1 (RFC 3501).
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package imap
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import (
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"fmt"
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"errors"
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"io"
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"strings"
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)
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// ConnState describes the connection state.
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//
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// See RFC 9051 section 3.
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type ConnState int
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// A StatusItem is a mailbox status data item that can be retrieved with a
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// STATUS command. See RFC 3501 section 6.3.10.
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type StatusItem string
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const (
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ConnStateNone ConnState = iota
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ConnStateNotAuthenticated
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ConnStateAuthenticated
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ConnStateSelected
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ConnStateLogout
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StatusMessages StatusItem = "MESSAGES"
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StatusRecent = "RECENT"
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StatusUidNext = "UIDNEXT"
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StatusUidValidity = "UIDVALIDITY"
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StatusUnseen = "UNSEEN"
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)
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// String implements fmt.Stringer.
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func (state ConnState) String() string {
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switch state {
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case ConnStateNone:
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return "none"
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case ConnStateNotAuthenticated:
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return "not authenticated"
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case ConnStateAuthenticated:
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return "authenticated"
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case ConnStateSelected:
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return "selected"
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case ConnStateLogout:
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return "logout"
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// A FetchItem is a message data item that can be fetched.
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type FetchItem string
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// List of items that can be fetched.
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const (
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// Macros
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FetchAll FetchItem = "ALL"
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FetchFast = "FAST"
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FetchFull = "FULL"
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// Items
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FetchBody = "BODY"
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FetchBodyStructure = "BODYSTRUCTURE"
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FetchEnvelope = "ENVELOPE"
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FetchFlags = "FLAGS"
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FetchInternalDate = "INTERNALDATE"
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FetchRFC822 = "RFC822"
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FetchRFC822Header = "RFC822.HEADER"
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FetchRFC822Size = "RFC822.SIZE"
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FetchRFC822Text = "RFC822.TEXT"
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FetchUid = "UID"
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)
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// Expand expands the item if it's a macro.
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func (item FetchItem) Expand() []FetchItem {
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switch item {
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case FetchAll:
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return []FetchItem{FetchFlags, FetchInternalDate, FetchRFC822Size, FetchEnvelope}
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case FetchFast:
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return []FetchItem{FetchFlags, FetchInternalDate, FetchRFC822Size}
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case FetchFull:
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return []FetchItem{FetchFlags, FetchInternalDate, FetchRFC822Size, FetchEnvelope, FetchBody}
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default:
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panic(fmt.Errorf("imap: unknown connection state %v", int(state)))
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return []FetchItem{item}
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}
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}
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// MailboxAttr is a mailbox attribute.
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//
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// Mailbox attributes are defined in RFC 9051 section 7.3.1.
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type MailboxAttr string
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// FlagsOp is an operation that will be applied on message flags.
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type FlagsOp string
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const (
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// Base attributes
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MailboxAttrNonExistent MailboxAttr = "\\NonExistent"
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MailboxAttrNoInferiors MailboxAttr = "\\Noinferiors"
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MailboxAttrNoSelect MailboxAttr = "\\Noselect"
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MailboxAttrHasChildren MailboxAttr = "\\HasChildren"
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MailboxAttrHasNoChildren MailboxAttr = "\\HasNoChildren"
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MailboxAttrMarked MailboxAttr = "\\Marked"
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MailboxAttrUnmarked MailboxAttr = "\\Unmarked"
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MailboxAttrSubscribed MailboxAttr = "\\Subscribed"
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MailboxAttrRemote MailboxAttr = "\\Remote"
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// Role (aka. "special-use") attributes
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MailboxAttrAll MailboxAttr = "\\All"
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MailboxAttrArchive MailboxAttr = "\\Archive"
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MailboxAttrDrafts MailboxAttr = "\\Drafts"
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MailboxAttrFlagged MailboxAttr = "\\Flagged"
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MailboxAttrJunk MailboxAttr = "\\Junk"
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MailboxAttrSent MailboxAttr = "\\Sent"
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MailboxAttrTrash MailboxAttr = "\\Trash"
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MailboxAttrImportant MailboxAttr = "\\Important" // RFC 8457
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// SetFlags replaces existing flags by new ones.
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SetFlags FlagsOp = "FLAGS"
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// AddFlags adds new flags.
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AddFlags = "+FLAGS"
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// RemoveFlags removes existing flags.
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RemoveFlags = "-FLAGS"
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)
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// Flag is a message flag.
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//
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// Message flags are defined in RFC 9051 section 2.3.2.
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type Flag string
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// silentOp can be appended to a FlagsOp to prevent the operation from
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// triggering unilateral message updates.
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const silentOp = ".SILENT"
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const (
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// System flags
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FlagSeen Flag = "\\Seen"
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FlagAnswered Flag = "\\Answered"
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FlagFlagged Flag = "\\Flagged"
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FlagDeleted Flag = "\\Deleted"
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FlagDraft Flag = "\\Draft"
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// A StoreItem is a message data item that can be updated.
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type StoreItem string
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// Widely used flags
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FlagForwarded Flag = "$Forwarded"
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FlagMDNSent Flag = "$MDNSent" // Message Disposition Notification sent
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FlagJunk Flag = "$Junk"
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FlagNotJunk Flag = "$NotJunk"
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FlagPhishing Flag = "$Phishing"
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FlagImportant Flag = "$Important" // RFC 8457
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// Permanent flags
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FlagWildcard Flag = "\\*"
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)
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// LiteralReader is a reader for IMAP literals.
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type LiteralReader interface {
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io.Reader
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Size() int64
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// FormatFlagsOp returns the StoreItem that executes the flags operation op.
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func FormatFlagsOp(op FlagsOp, silent bool) StoreItem {
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s := string(op)
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if silent {
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s += silentOp
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}
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return StoreItem(s)
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}
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// UID is a message unique identifier.
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type UID uint32
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// ParseFlagsOp parses a flags operation from StoreItem.
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func ParseFlagsOp(item StoreItem) (op FlagsOp, silent bool, err error) {
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itemStr := string(item)
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silent = strings.HasSuffix(itemStr, silentOp)
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if silent {
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itemStr = strings.TrimSuffix(itemStr, silentOp)
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}
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op = FlagsOp(itemStr)
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if op != SetFlags && op != AddFlags && op != RemoveFlags {
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err = errors.New("Unsupported STORE operation")
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}
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return
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}
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// CharsetReader, if non-nil, defines a function to generate charset-conversion
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// readers, converting from the provided charset into UTF-8. Charsets are always
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// lower-case. utf-8 and us-ascii charsets are handled by default. One of the
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// the CharsetReader's result values must be non-nil.
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var CharsetReader func(charset string, r io.Reader) (io.Reader, error)
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