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|
package command
import (
"fmt"
"github.com/ProtonMail/gluon/rfcparser"
)
type StoreAction int
const (
StoreActionAddFlags StoreAction = iota
StoreActionRemFlags
StoreActionSetFlags
)
func (s StoreAction) String() string {
switch s {
case StoreActionAddFlags:
return "+FLAGS"
case StoreActionRemFlags:
return "+FLAGS"
case StoreActionSetFlags:
return "FLAGS"
default:
return "UNKNOWN"
}
}
type Store struct {
SeqSet []SeqRange
Action StoreAction
Flags []string
Silent bool
}
func (s Store) String() string {
silentStr := ""
if s.Silent {
silentStr = ".SILENT"
}
return fmt.Sprintf("STORE %v%v %v", s.Action.String(), silentStr, s.Flags)
}
func (s Store) SanitizedString() string {
return s.String()
}
type StoreCommandParser struct{}
func (StoreCommandParser) FromParser(p *rfcparser.Parser) (Payload, error) {
//nolint:dupword
// store = "STORE" SP sequence-set SP store-att-flags
// store-att-flags = (["+" / "-"] "FLAGS" [".SILENT"]) SP
// (flag-list / (flag *(SP flag)))
if err := p.Consume(rfcparser.TokenTypeSP, "expected space after command"); err != nil {
return nil, err
}
seqSet, err := ParseSeqSet(p)
if err != nil {
return nil, err
}
if err := p.Consume(rfcparser.TokenTypeSP, "expected space after sequence set"); err != nil {
return nil, err
}
var action StoreAction
if ok, err := p.Matches(rfcparser.TokenTypePlus); err != nil {
return nil, err
} else if !ok {
if ok, err := p.Matches(rfcparser.TokenTypeMinus); err != nil {
return nil, err
} else if ok {
action = StoreActionRemFlags
} else {
action = StoreActionSetFlags
}
} else {
action = StoreActionAddFlags
}
if err := p.ConsumeBytesFold('F', 'L', 'A', 'G', 'S'); err != nil {
return nil, err
}
var silent bool
if ok, err := p.Matches(rfcparser.TokenTypePeriod); err != nil {
return nil, err
} else if ok {
if err := p.ConsumeBytesFold('S', 'I', 'L', 'E', 'N', 'T'); err != nil {
return nil, err
}
silent = true
}
if err := p.Consume(rfcparser.TokenTypeSP, "expected space after FLAGS"); err != nil {
return nil, err
}
flags, err := parseStoreFlags(p)
if err != nil {
return nil, err
}
return &Store{
SeqSet: seqSet,
Action: action,
Flags: flags,
Silent: silent,
}, nil
}
func parseStoreFlags(p *rfcparser.Parser) ([]string, error) {
// (flag-list / (flag *(SP flag)))
fl, ok, err := TryParseFlagList(p)
if err != nil {
return nil, err
} else if ok {
return fl, nil
}
var flags []string
// first flag.
{
f, err := ParseFlag(p)
if err != nil {
return nil, err
}
flags = append(flags, f)
}
// remaining.
for {
if ok, err := p.Matches(rfcparser.TokenTypeSP); err != nil {
return nil, err
} else if !ok {
break
}
f, err := ParseFlag(p)
if err != nil {
return nil, err
}
flags = append(flags, f)
}
return flags, nil
}
|
