mime.h

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#ifndef MIME_H
#define MIME_H
 
#include "stralloc.h"
 
extern void decode_qp(const char *,unsigned int,stralloc *);
extern void decode_b64(const char *,unsigned int,stralloc *);
extern void encode_qp(const char *,unsigned int,stralloc *);
extern void encode_b64(const unsigned char *,unsigned int,stralloc *,int);
extern void decode_hdr(const char *,unsigned int,stralloc *);
extern void concat_hdr(char *,unsigned int,stralloc *);
extern int unfold_hdr(char *,unsigned long,stralloc *,const char *,stralloc *,int);
 
extern unsigned int author_name(char **,char *,unsigned int);
 
/* Characters */
#define ESC 0x1B
#define SI 0x0F
#define SO 0x0E
/* iso-2022-jp back-to-ascii seq */
#define TOASCII "\x1B(B"
/* to JP. Last char [B|@] must be added */
#define TOJP "\x1B$"
 
/* iso-2022 SI sequence as string */
#define TOSI "\x0F"
/* SI \n SO */
#define SI_LF_SO "\x0F\n\x0E"
 
/* in these bit 0 determines the number of bytes (1 or 2) in ss2/ss3 codes */
/* it is 2 for CN,1 for JP, and they are not used for KR bit 3 for iso-2022 */
#define CS_2022_MASK 0x08
#define CS_2022_JP 0x08
#define CS_2022_KR 0xA0
#define CS_NONE 0
#define CS_BAD 0xffff
 
#define CS_2022_CN 0x09
/* Other Chinese ones. bit 7 set means MSB of 2-byte seq. No ss2/ss3 considered */
#define CS_CN 0x10
 
#define MIME_NONE 0
#define MIME_APPLICATION_OCTETSTREAM 1
#define MIME_MULTI 0x80
#define MIME_MULTI_ALTERNATIVE 0x81
#define MIME_MULTI_MIXED 0x82
#define MIME_MULTI_DIGEST 0x83
#define MIME_MULTI_SIGNED 0x84
 
#define MIME_TEXT 0x40
#define MIME_TEXT_PLAIN 0x41
#define MIME_TEXT_HTML 0x42
#define MIME_TEXT_ENRICHED 0x43
#define MIME_TEXT_VCARD 0x44
 
#define MIME_MESSAGE 0x20
#define MIME_MESSAGE_RFC822 0x21
 
#define CTENC_NONE 0
#define CTENC_QP 1
#define CTENC_BASE64 2
 
/* this is a linked list of mime type info. */
typedef struct {
        int level;
        unsigned int mimetype;
        unsigned int ctenc;
        unsigned int cs;              /* charset flag - expand later */
        void *previous;
        void *next;
        stralloc boundary;
        stralloc charset;
        stralloc ctype;
} mime_info;
 
#endif