#ifndef HFIELD_H
#define HFIELD_H

#define H_SENDER                        1
#define H_FROM                          2
#define H_REPLYTO                       3
#define H_TO                            4
#define H_CC                            5
#define H_BCC                           6
#define H_DATE                          7
#define H_MESSAGEID                     8
#define H_SUBJECT                       9
#define H_R_SENDER                      10
#define H_R_FROM                        11
#define H_R_REPLYTO                     12
#define H_R_TO                          13
#define H_R_CC                          14
#define H_R_BCC                         15
#define H_R_DATE                        16
#define H_R_MESSAGEID                   17
#define H_RETURNRECEIPTTO               18
#define H_ERRORSTO                      19
#define H_APPARENTLYTO                  20
#define H_RECEIVED                      21
#define H_RETURNPATH                    22
#define H_DELIVEREDTO                   23
#define H_CONTENTLENGTH                 24
#define H_CONTENTTYPE                   25
#define H_CONTENTTRANSFERENCODING       26
#define H_NOTICEREQUESTEDUPONDELIVERYTO 27
#define H_MAILFOLLOWUPTO                28
#define H_NUM                           29

extern unsigned int hfield_skipname(char *s, int len);
extern int hfield_known(char *s, int len);
extern int hfield_valid(char *s, int len);

#endif