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package commands
import (
"errors"
"io"
"strings"
"github.com/emersion/go-imap"
)
// Search is a SEARCH command, as defined in RFC 3501 section 6.4.4.
type Search struct {
Charset string
Criteria *imap.SearchCriteria
}
func (cmd *Search) Command() *imap.Command {
var args []interface{}
if cmd.Charset != "" {
args = append(args, imap.RawString("CHARSET"), imap.RawString(cmd.Charset))
}
args = append(args, cmd.Criteria.Format()...)
return &imap.Command{
Name: "SEARCH",
Arguments: args,
}
}
func (cmd *Search) Parse(fields []interface{}) error {
if len(fields) == 0 {
return errors.New("Missing search criteria")
}
// Parse charset
if f, ok := fields[0].(string); ok && strings.EqualFold(f, "CHARSET") {
if len(fields) < 2 {
return errors.New("Missing CHARSET value")
}
if cmd.Charset, ok = fields[1].(string); !ok {
return errors.New("Charset must be a string")
}
fields = fields[2:]
}
var charsetReader func(io.Reader) io.Reader
charset := strings.ToLower(cmd.Charset)
if charset != "utf-8" && charset != "us-ascii" && charset != "" {
charsetReader = func(r io.Reader) io.Reader {
r, _ = imap.CharsetReader(charset, r)
return r
}
}
cmd.Criteria = new(imap.SearchCriteria)
return cmd.Criteria.ParseWithCharset(fields, charsetReader)
}
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