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/* head.h
*/
/* This software is copyrighted as detailed in the LICENSE file. */
#define HEAD_FIRST SOME_LINE
/* types of header lines (if only C really believed in enums)
* (These must stay in alphabetic order at least in the first letter.
* Within each letter it helps to arrange in increasing likelihood.)
*/
#define PAST_HEADER 0 /* body */
#define SHOWN_LINE (PAST_HEADER+1) /* unrecognized but shown */
#define HIDDEN_LINE (SHOWN_LINE+1) /* unrecognized but hidden */
#define CUSTOM_LINE (HIDDEN_LINE+1) /* to isolate a custom line */
#define SOME_LINE (CUSTOM_LINE+1) /* default for unrecognized */
#define AUTHOR_LINE (SOME_LINE+1) /* Author */
#define BYTES_LINE (AUTHOR_LINE+1) /* Bytes */
#define CONTNAME_LINE (BYTES_LINE+1) /* Content-Name */
#define CONTDISP_LINE (CONTNAME_LINE+1) /* Content-Disposition */
#define CONTLEN_LINE (CONTDISP_LINE+1) /* Content-Length */
#define CONTXFER_LINE (CONTLEN_LINE+1) /* Content-Transfer-Encoding */
#define CONTTYPE_LINE (CONTXFER_LINE+1) /* Content-Type */
#define DIST_LINE (CONTTYPE_LINE+1) /* distribution */
#define DATE_LINE (DIST_LINE+1) /* date */
#define EXPIR_LINE (DATE_LINE+1) /* expires */
#define FOLLOW_LINE (EXPIR_LINE+1) /* followup-to */
#define FROM_LINE (FOLLOW_LINE+1) /* from */
#define INREPLY_LINE (FROM_LINE+1) /* in-reply-to */
#define KEYW_LINE (INREPLY_LINE+1) /* keywords */
#define LINES_LINE (KEYW_LINE+1) /* lines */
#define MIMEVER_LINE (LINES_LINE+1) /* mime-version */
#define MSGID_LINE (MIMEVER_LINE+1) /* message-id */
#define NGS_LINE (MSGID_LINE+1) /* newsgroups */
#define PATH_LINE (NGS_LINE+1) /* path */
#define RVER_LINE (PATH_LINE+1) /* relay-version */
#define REPLY_LINE (RVER_LINE+1) /* reply-to */
#define REFS_LINE (REPLY_LINE+1) /* references */
#define SUMRY_LINE (REFS_LINE+1) /* summary */
#define SUBJ_LINE (SUMRY_LINE+1) /* subject */
#define XREF_LINE (SUBJ_LINE+1) /* xref */
#define HEAD_LAST (XREF_LINE+1) /* total # of headers */
struct headtype {
char* name; /* header line identifier */
ART_POS minpos; /* pointer to beginning of line in article */
ART_POS maxpos; /* pointer to end of line in article */
char length; /* the header's string length */
char flags; /* the header's flags */
};
struct user_headtype {
char* name; /* user-defined headers */
char length; /* the header's string length */
char flags; /* the header's flags */
};
#define HT_HIDE 0x01 /* hide this line */
#define HT_MAGIC 0x02 /* do any special processing on this line */
#define HT_CACHED 0x04 /* this information is cached article data */
#define HT_DEFHIDE 0x08 /* hidden by default */
#define HT_DEFMAGIC 0x10 /* magic by default */
#define HT_MAGICOK 0x20 /* magic even possible for line */
/* This array must stay in the same order as the list above */
#ifndef DOINIT
EXT struct headtype htype[HEAD_LAST];
#else
#define HIDDEN (HT_HIDE|HT_DEFHIDE)
#define MAGIC_ON (HT_MAGICOK|HT_MAGIC|HT_DEFMAGIC)
#define MAGIC_OFF (HT_MAGICOK)
#ifdef DBM_XREFS
#define XREF_CACHED 0
#define NGS_CACHED HT_CACHED
#else
#define XREF_CACHED HT_CACHED
#define NGS_CACHED 0
#endif
#ifdef USE_FILTER
#define FILT_CACHED HT_CACHED
#else
#define FILT_CACHED 0
#endif
struct headtype htype[HEAD_LAST] = {
/* name minpos maxpos length flag */
{nullstr,/*BODY*/ 0, 0, 0, 0 },
{nullstr,/*SHOWN*/ 0, 0, 0, 0 },
{nullstr,/*HIDDEN*/ 0, 0, 0, HIDDEN },
{nullstr,/*CUSTOM*/ 0, 0, 0, 0 },
{"unrecognized", 0, 0, 12, HIDDEN },
{"author", 0, 0, 6, 0 },
{"bytes", 0, 0, 5, HIDDEN|HT_CACHED},
{"content-name", 0, 0, 12, HIDDEN },
{"content-disposition",
0, 0, 19, HIDDEN },
{"content-length", 0, 0, 14, HIDDEN },
{"content-transfer-encoding",
0, 0, 25, HIDDEN },
{"content-type", 0, 0, 12, HIDDEN },
{"distribution", 0, 0, 12, 0 },
{"date", 0, 0, 4, MAGIC_ON },
{"expires", 0, 0, 7, HIDDEN|MAGIC_ON },
{"followup-to", 0, 0, 11, 0 },
{"from", 0, 0, 4, MAGIC_OFF|HT_CACHED},
{"in-reply-to", 0, 0, 11, HIDDEN },
{"keywords", 0, 0, 8, 0 },
{"lines", 0, 0, 5, HT_CACHED },
{"mime-version", 0, 0, 12, MAGIC_ON|HIDDEN },
{"message-id", 0, 0, 10, HIDDEN|HT_CACHED},
{"newsgroups", 0, 0, 10, MAGIC_ON|HIDDEN|NGS_CACHED},
{"path", 0, 0, 4, HIDDEN },
{"relay-version", 0, 0, 13, HIDDEN },
{"reply-to", 0, 0, 8, 0 },
{"references", 0, 0, 10, HIDDEN|FILT_CACHED},
{"summary", 0, 0, 7, 0 },
{"subject", 0, 0, 7, MAGIC_ON|HT_CACHED},
{"xref", 0, 0, 4, HIDDEN|XREF_CACHED},
};
#undef HIDDEN
#undef MAGIC_ON
#undef MAGIC_OFF
#undef NGS_CACHED
#undef XREF_CACHED
#endif
EXT struct user_headtype* user_htype INIT(NULL);
EXT short user_htypeix[26];
EXT int user_htype_cnt INIT(0);
EXT int user_htype_max INIT(0);
EXT ART_NUM parsed_art INIT(0); /* the article number we've parsed */
EXT ARTICLE* parsed_artp INIT(NULL); /* the article ptr we've parsed */
EXT int in_header INIT(0); /* are we decoding the header? */
EXT char* headbuf;
EXT long headbuf_size;
#define PREFETCH_SIZE 5
#define fetchsubj(artnum,copy) prefetchlines(artnum,SUBJ_LINE,copy)
#define fetchfrom(artnum,copy) prefetchlines(artnum,FROM_LINE,copy)
#ifdef DBM_XREFS
#define fetchxref(artnum,copy) prefetchlines(artnum,NGS_LINE,copy)
#else
#define fetchxref(artnum,copy) prefetchlines(artnum,XREF_LINE,copy)
#endif
/* DON'T EDIT BELOW THIS LINE OR YOUR CHANGES WILL BE LOST! */
void head_init _((void));
#ifdef DEBUG
void dumpheader _((char*));
#endif
int set_line_type _((char*,char*));
int get_header_num _((char*));
void start_header _((ART_NUM));
void end_header_line _((void));
bool parseline _((char*,int,int));
void end_header _((void));
bool parseheader _((ART_NUM));
char* fetchlines _((ART_NUM,int));
#ifdef SCAN
char* mp_fetchlines _((ART_NUM,int,int));
#endif
char* prefetchlines _((ART_NUM,int,bool_int));
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