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ParserFactory.go
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ParserFactory.go
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package parser
import (
"errors"
"sip/core"
"strings"
)
/** A factory class that does a name lookup on a registered parser and
* returns a header parser for the given name.
*/
/** create a parser for a header. This is the parser factory.
*/
func CreateParser(line string) (parser Parser, ParseException error) {
var lexer SIPLexer
headerName := strings.TrimSpace(strings.ToLower(lexer.GetHeaderName(line)))
headerValue := lexer.GetHeaderValue(line)
if headerName == "" || headerValue == "" {
return nil, errors.New("ParseException: The header name or value is null")
}
switch headerName {
case strings.ToLower(core.SIPHeaderNames_REPLY_TO):
parser = NewReplyToParser(line)
case strings.ToLower(core.SIPHeaderNames_IN_REPLY_TO):
parser = NewInReplyToParser(line)
case strings.ToLower(core.SIPHeaderNames_ACCEPT_ENCODING):
parser = NewAcceptEncodingParser(line)
case strings.ToLower(core.SIPHeaderNames_ACCEPT_LANGUAGE):
parser = NewAcceptLanguageParser(line)
case "t":
parser = NewToParser(line)
case strings.ToLower(core.SIPHeaderNames_TO):
parser = NewToParser(line)
case strings.ToLower(core.SIPHeaderNames_FROM):
parser = NewFromParser(line)
case "f":
parser = NewFromParser(line)
case strings.ToLower(core.SIPHeaderNames_CSEQ):
parser = NewCSeqParser(line)
case strings.ToLower(core.SIPHeaderNames_VIA):
parser = NewViaParser(line)
case "v":
parser = NewViaParser(line)
case strings.ToLower(core.SIPHeaderNames_CONTACT):
parser = NewContactParser(line)
case "m":
parser = NewContactParser(line)
case strings.ToLower(core.SIPHeaderNames_CONTENT_TYPE):
parser = NewContentTypeParser(line)
case "c":
parser = NewContentTypeParser(line)
case strings.ToLower(core.SIPHeaderNames_CONTENT_LENGTH):
parser = NewContentLengthParser(line)
case "l":
parser = NewContentLengthParser(line)
case strings.ToLower(core.SIPHeaderNames_AUTHORIZATION):
parser = NewAuthorizationParser(line)
case strings.ToLower(core.SIPHeaderNames_WWW_AUTHENTICATE):
parser = NewWWWAuthenticateParser(line)
case strings.ToLower(core.SIPHeaderNames_CALL_ID):
parser = NewCallIDParser(line)
case "i":
parser = NewCallIDParser(line)
case strings.ToLower(core.SIPHeaderNames_ROUTE):
parser = NewRouteParser(line)
case strings.ToLower(core.SIPHeaderNames_RECORD_ROUTE):
parser = NewRecordRouteParser(line)
case strings.ToLower(core.SIPHeaderNames_DATE):
parser = NewDateParser(line)
case strings.ToLower(core.SIPHeaderNames_PROXY_AUTHORIZATION):
parser = NewProxyAuthorizationParser(line)
case strings.ToLower(core.SIPHeaderNames_PROXY_AUTHENTICATE):
parser = NewProxyAuthenticateParser(line)
case strings.ToLower(core.SIPHeaderNames_RETRY_AFTER):
parser = NewRetryAfterParser(line)
case strings.ToLower(core.SIPHeaderNames_REQUIRE):
parser = NewRequireParser(line)
case strings.ToLower(core.SIPHeaderNames_PROXY_REQUIRE):
parser = NewProxyRequireParser(line)
case strings.ToLower(core.SIPHeaderNames_TIMESTAMP):
parser = NewTimeStampParser(line)
case strings.ToLower(core.SIPHeaderNames_UNSUPPORTED):
parser = NewUnsupportedParser(line)
case strings.ToLower(core.SIPHeaderNames_USER_AGENT):
parser = NewUserAgentParser(line)
case strings.ToLower(core.SIPHeaderNames_SUPPORTED):
parser = NewSupportedParser(line)
case "k":
parser = NewSupportedParser(line)
case strings.ToLower(core.SIPHeaderNames_SERVER):
parser = NewServerParser(line)
case strings.ToLower(core.SIPHeaderNames_SUBJECT):
parser = NewSubjectParser(line)
case "s":
parser = NewSubjectParser(line)
case strings.ToLower(core.SIPHeaderNames_SUBSCRIPTION_STATE):
parser = NewSubscriptionStateParser(line)
case strings.ToLower(core.SIPHeaderNames_MAX_FORWARDS):
parser = NewMaxForwardsParser(line)
case strings.ToLower(core.SIPHeaderNames_MIME_VERSION):
parser = NewMimeVersionParser(line)
case strings.ToLower(core.SIPHeaderNames_MIN_EXPIRES):
parser = NewMinExpiresParser(line)
case strings.ToLower(core.SIPHeaderNames_ORGANIZATION):
parser = NewOrganizationParser(line)
case strings.ToLower(core.SIPHeaderNames_PRIORITY):
parser = NewPriorityParser(line)
case strings.ToLower(core.SIPHeaderNames_RACK):
parser = NewRAckParser(line)
case strings.ToLower(core.SIPHeaderNames_RSEQ):
parser = NewRSeqParser(line)
case strings.ToLower(core.SIPHeaderNames_REASON):
parser = NewReasonParser(line)
case strings.ToLower(core.SIPHeaderNames_WARNING):
parser = NewWarningParser(line)
case strings.ToLower(core.SIPHeaderNames_EXPIRES):
parser = NewExpiresParser(line)
case strings.ToLower(core.SIPHeaderNames_EVENT):
parser = NewEventParser(line)
case "o":
parser = NewEventParser(line)
case strings.ToLower(core.SIPHeaderNames_ERROR_INFO):
parser = NewErrorInfoParser(line)
case strings.ToLower(core.SIPHeaderNames_CONTENT_LANGUAGE):
parser = NewContentLanguageParser(line)
case strings.ToLower(core.SIPHeaderNames_CONTENT_ENCODING):
parser = NewContentEncodingParser(line)
case "e":
parser = NewContentEncodingParser(line)
case strings.ToLower(core.SIPHeaderNames_CONTENT_DISPOSITION):
parser = NewContentDispositionParser(line)
case strings.ToLower(core.SIPHeaderNames_CALL_INFO):
parser = NewCallInfoParser(line)
case strings.ToLower(core.SIPHeaderNames_AUTHENTICATION_INFO):
parser = NewAuthenticationInfoParser(line)
case strings.ToLower(core.SIPHeaderNames_ALLOW):
parser = NewAllowParser(line)
case strings.ToLower(core.SIPHeaderNames_ALLOW_EVENTS):
parser = NewAllowEventsParser(line)
case "u":
parser = NewAllowEventsParser(line)
case strings.ToLower(core.SIPHeaderNames_ALERT_INFO):
parser = NewAlertInfoParser(line)
case strings.ToLower(core.SIPHeaderNames_ACCEPT):
parser = NewAcceptParser(line)
case strings.ToLower(core.SIPHeaderNames_REFER_TO):
parser = NewReferToParser(line)
default:
// Just generate a generic SIPHeader. We define
// parsers only for the above.
parser = NewHeaderParser(line)
}
return parser, nil
}