/* formatsbr.c - format string interpretation */
#ifndef	lint
static char ident[] = "@(#)$Id$";
#endif	/* lint */

#include "../h/mh.h"
#include "../h/addrsbr.h"
#include "../h/formatsbr.h"
#include "../zotnet/tws.h"
#include "../h/fmtcompile.h"
#include <ctype.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>

/*  */


#define	NFMTS	MAXARGS
#define QUOTE '\\'

static char  *formats = 0;
extern char *formataddr ();	/* hook for custom address formatting */
#ifdef	LBL
struct msgs *fmt_current_folder; /* current folder (set by main program) */
#endif

static normalize();
static int   get_x400_comp();

extern int fmt_norm;		/* defined in sbr/formatdef.c = AD_NAME */
struct mailname fmt_mnull;

#ifdef JAPAN
extern int japan_environ;
#endif /* JAPAN */

time_t	time ();

/*  */

/* MAJOR HACK:	See MHCHANGES for discussion */

char  *new_fs (form, format, def)
register char  *form,
               *format,
               *def;
{
    struct stat st;
    register    FILE *fp;

    if (formats)
	free (formats);

    if (form) {
	if ((fp = fopen (libpath (form), "r")) == NULL)
	    adios (form, "unable to open format file");

	if (fstat (fileno (fp), &st) == NOTOK)
	    adios (form, "unable to stat format file");

	if ((formats = malloc ((unsigned) st.st_size + 1)) == NULLCP)
	    adios (form, "unable to allocate space for format");

	if (read (fileno(fp), formats, (int) st.st_size) != st.st_size)
	    adios (form, "error reading format file");

	formats[st.st_size] = '\0';

	(void) fclose (fp);
    }
    else {
	formats = getcpy (format ? format : def);
    }

#ifdef JAPAN
    (void) ml_conv(formats);
#endif /* JAPAN */

    normalize (formats);

    return formats;
}

/*  */

static  normalize (cp)
register char  *cp;
{
    register char  *dp;

    for (dp = cp; *cp; cp++)
	if (*cp != QUOTE)
	    *dp++ = *cp;
	else
	    switch (*++cp) {
#define	grot(y,z) case y: *dp++ = z; break;
		grot ('b', '\b');
		grot ('f', '\f');
		grot ('n', '\n');
		grot ('r', '\r');
		grot ('t', '\t');

		case '\n':
		    break;

		case 0: 
		    cp--;	/* fall */
		default: 
		    *dp++ = *cp;
		    break;
	    }

    *dp = 0;
}

/*  */
/*
 * test if string "sub" appears anywhere in string "str"
 * (case insensitive).
 */

static int match (str, sub)
register unsigned char  *str,
                        *sub;
{
    register unsigned int    c1;
    register unsigned int    c2;
    register unsigned char   *s1;
    register unsigned char   *s2;

#ifdef JAPAN
    while (c1 = *sub) {
	c1 = (isalpha(c1) && isupper(c1)) ? tolower(c1) : c1;
	while ((c2 = *str++)
	       && c1 != ((isalpha(c2) && isupper(c2)) ? tolower(c2) : c2))
	  ;
	if (! c2)
	  return 0;
	s1 = sub + 1; s2 = str;
	while ((c1 = *s1++) &&
	       ((isalpha(c1) && isupper(c1)) ? tolower(c1) : c1)
	       == ((isalpha(c2 = *s2++) && isupper(c2)) ? tolower(c2) : c2))
	  ;
	if (! c1)
	  return 1;
    }
#else /* JAPAN */
#ifdef LOCALE
    while (c1 = *sub) {
	c1 = (isalpha(c1) && isupper(c1)) ? tolower(c1) : c1;
	while ((c2 = *str++) && c1 != ((isalpha(c2) && isupper(c2)) ? tolower(c2) : c2))
	    ;
	if (! c2)
	    return 0;
	s1 = sub + 1; s2 = str;
	while ((c1 = *s1++) && ((isalpha(c1) && isupper(c1)) ? tolower(c1) : c1) == ((isalpha(c2 =*s2++) && isupper(c2)) ? tolower(c2) : c2))
	    ;
	if (! c1)
	    return 1;
    }
#else
    while (c1 = *sub) {
	while ((c2 = *str++) && (c1 | 040) != (c2 | 040))
	    ;
	if (! c2)
	    return 0;
	s1 = sub + 1; s2 = str;
	while ((c1 = *s1++) && (c1 | 040) == (*s2++ | 040))
	    ;
	if (! c1)
	    return 1;
    }
#endif
#endif /* JAPAN */
    return 1;
}
/*  */

/* macros to format data */

#define PUTDF(cp, num, wid, fill) if (cp + wid < ep){\
		if((i = (num))<0) i = -(num);\
		if((c = (wid))<0) c = -c;\
		sp = cp + c;\
		do {\
		    *--sp = (i % 10) + '0';\
		    i /= 10;\
		} while (i > 0 && sp > cp);\
		if (i > 0)\
		    *sp = '?';\
		else if ((num) < 0 && sp > cp)\
		    *--sp = '-';\
		while (sp > cp)\
		    *--sp = fill;\
		cp += c;\
		}
#define PUTD(cp, num) if (cp < ep){\
		if((i = (num))==0) *cp++ = '0';\
		else {\
		    if((i = (num))<0) \
			*cp++ = '-', i = -(num);\
		    c = 10;\
		    while (1) {\
			int j;\
			if (c > i) {\
			    c /= 10; break;\
			}\
			j = c;\
			c *= 10;\
			if (c % 10) { /* overflow */\
			    c = j; break;\
			}\
		    }\
		    while (cp < ep && c > 0) {\
			*cp++ = (i / c) + '0';\
			i %= c;\
			c /= 10;\
			}\
		    }\
		}
#ifdef LOCALE
#define PUTSF(cp, str, wid, fill) {\
		ljust = 0;\
		if ((i = (wid)) < 0) {\
			i = -i;\
			ljust++;\
		}\
		if (sp = (str)) {\
			if (ljust) {\
				c = strlen(sp);\
				if (c > i)\
					sp += c - i;\
				else {\
					while( --i >= c && cp < ep)\
						*cp++ = fill;\
					i++;\
				}\
			} else {\
			    while ((c = (unsigned char) *sp) && (iscntrl(c) || isspace(c)))\
				sp++;\
			}\
			while ((c = (unsigned char) *sp++) && --i >= 0 && cp < ep)\
				if (isgraph(c)) \
				    *cp++ = c;\
				else {\
					while ((c = (unsigned char) *sp) && (iscntrl(c) || isspace(c)))\
						sp++;\
					    *cp++ = ' ';\
				}\
		}\
		if (!ljust)\
		while( --i >= 0 && cp < ep)\
		    *cp++ = fill;\
	}
#define PUTS(cp, str) {\
		if (sp = (str)) {\
		    while ((c = (unsigned char) *sp) && (iscntrl(c) || isspace(c)))\
			sp++;\
		    while((c = (unsigned char) *sp++) && cp < ep)\
			if (isgraph(c)) \
			    *cp++ = c;\
			else {\
			    while ((c = (unsigned char) *sp) && (iscntrl(c) || isspace(c)))\
				sp++;\
			    *cp++ = ' ';\
			}\
		}\
	}
#else /* LOCALE */
#define PUTSF(cp, str, wid, fill) {\
		ljust = 0;\
		if ((i = (wid)) < 0) {\
			i = -i;\
			ljust++;\
		}\
		if (sp = (str)) {\
			if (ljust) {\
				c = strlen(sp);\
				if (c > i)\
					sp += c - i;\
				else {\
					while( --i >= c && cp < ep)\
						*cp++ = fill;\
					i++;\
				}\
			} else {\
		    while ((c = (unsigned char) *sp) && c <= 32)\
			sp++;\
			}\
			while ((c = (unsigned char) *sp++) && --i >= 0 && cp < ep)\
				if (c > 32) \
			    *cp++ = c;\
			else {\
					while ((c = (unsigned char) *sp) && c <= 32)\
				sp++;\
			    *cp++ = ' ';\
			}\
		}\
		if (!ljust)\
		while( --i >= 0 && cp < ep)\
		    *cp++ = fill;\
		}
#define PUTS(cp, str) {\
		if (sp = (str)) {\
		    while ((c = (unsigned char) *sp) && c <= 32)\
			sp++;\
		    while( (c = (unsigned char) *sp++) && cp < ep)\
			if ( c > 32 ) \
			    *cp++ = c;\
			else {\
			    while ( (c = (unsigned char) *sp) && c <= 32 )\
				sp++;\
			    *cp++ = ' ';\
			}\
		}\
		}
#endif

#ifdef JAPAN

#undef PUTSF
#undef PUTS

#ifndef isgraph
#define isgraph(c) ((040<(c))&&((c)!=0177))
#endif

#define ISSPACE(c1)	(isspace((c1) & 0x7f))
#define ISGRAPH(c1)	((isgraph((c1) & 0x7f))\
			   || (japan_environ && (((c1) & 0xff) == 0x1b)))
#define ISCNTRL(c1)	((((c1) & 0xff) == 0x1b)\
			 ? !japan_environ : (iscntrl((c1) & 0x7f)))
#define ISJSPACE(c1,c2) ((((c1) & 0xff) == 0xa1) && (((c2) & 0xff) == 0xa1))
#define ISJGRAPH(c1,c2) ((isgraph((c1) & 0x7f)) &&\
			 (isgraph((c2) & 0x7f)) &&\
			 (!ISJSPACE((c1), (c2))))

#define SKIP_SPACE(sp) {\
    while (ch = *(sp)) {\
	if (ISCNTRL(ch) || ISSPACE(ch)) {\
	    (sp)++;\
	} else if (ch2 = *((sp)+1)) {\
	    if (ISJSPACE(ch, ch2)) {\
		(sp) += 2;\
	    } else {\
		break;\
	    }\
	} else {\
	    break;\
	}\
    }\
}

#define PUTSF(cp, str, wid, fill) {\
    ljust = 0;\
    if ((i = (wid)) < 0) {\
	i = -i; ljust++;\
    }\
    if (sp = (str)) {\
	if (ljust) {\
	    c = strlen(sp);\
	    if (c > i)\
	      sp += c - i;\
	    else {\
		while (--i >= c && cp < ep)\
		  *cp++ = fill;\
		i++;\
	    }\
	} else {\
	    SKIP_SPACE(sp);\
	}\
	while ((ch = *sp++) && (--i >= 0) && (cp < ep)) {\
	    if (ml_ismlchar(ch)) {\
		if ((ch2 = *sp) && ((i-1) >= 0) && ((cp+1) < ep)) {\
		    if (ISJGRAPH(ch, ch2)) {\
			*cp++ = ch; *cp++ = ch2; sp++; --i;\
		    } else {\
			sp++; SKIP_SPACE(sp); *cp++ = ' ';\
		    }\
		} else {\
		    *cp++ = ' ';\
		}\
	    } else {\
		if (ISGRAPH(ch)) {\
		    *cp++ = ch;\
		} else {\
		    SKIP_SPACE(sp); *cp++ = ' ';\
		}\
	    }\
	}\
    }\
    if (!ljust)\
      while ((--i >= 0) && (cp < ep))\
	*cp++ = fill;\
}

#define PUTS(cp, str) {\
    if (sp = (str)) {\
	SKIP_SPACE(sp);\
	while ((ch = *sp++) && (cp < ep)) {\
	    if (ml_ismlchar(ch)) {\
		if ((ch2 = *sp) && ((cp+1) < ep)) {\
		    if (ISJGRAPH(ch, ch2)) {\
			*cp++ = ch; *cp++ = ch2; sp++;\
		    } else {\
			sp++; SKIP_SPACE(sp); *cp++ = ' ';\
		    }\
		} else {\
		    *cp++ = ' ';\
		}\
	    } else {\
		if (ISGRAPH(ch)) {\
		    *cp++ = ch;\
		} else {\
		    SKIP_SPACE(sp); *cp++ = ' ';\
		}\
	    }\
	}\
    }\
}

#endif /* JAPAN */

static char *lmonth[] = { "January",  "February","March",   "April",
			  "May",      "June",    "July",    "August",
			  "September","October", "November","December" };

static char *get_x400_friendly (mbox, buffer)
char   *mbox,
       *buffer;
{
    char    given[BUFSIZ],
	    surname[BUFSIZ];

    if (mbox == NULLCP)
	return NULLCP;
    if (*mbox == '"')
	mbox++;
    if (*mbox != '/')
	return NULLCP;

    if (get_x400_comp (mbox, "/PN=", buffer)) {
	for (mbox = buffer; mbox = index (mbox, '.'); )
	    *mbox++ = ' ';

	return buffer;
    }

    if (!get_x400_comp (mbox, "/S=", surname))
	return NULLCP;

    if (get_x400_comp (mbox, "/G=", given))
	(void) sprintf (buffer, "%s %s", given, surname);
    else
	(void) strcpy (buffer, surname);

    return buffer;
}

static int get_x400_comp (mbox, key, buffer)
char   *mbox,
       *key,
       *buffer;
{
    int	    idx;
    char   *cp;

    if ((idx = stringdex (key, mbox)) < 0
	    || !(cp = index (mbox += idx + strlen (key), '/')))
	return 0;

    (void) sprintf (buffer, "%*.*s", cp - mbox, cp - mbox, mbox);
    return 1;
}

struct format *
fmtscan (format, scanl, width, dat)
	struct format *format;
	char	*scanl;
	int	width;
	int	dat[];
{
    register char	*cp = scanl;
    register char	*ep = scanl + width - 1;
    register struct format *fmt = format;
    register char	*str = NULLCP;
    register int	value = 0;
    register char	*sp;
    register int	i;
    register int	c;
    register unsigned char ch, ch2;
    register struct comp *comp;
    register struct tws *tws;
    register struct mailname *mn;
    int ljust;
    time_t l;
    char        *savestr;
    char	buffer[BUFSIZ];

    while (cp < ep) {
	switch (fmt->f_type) {

	case FT_COMP:
	    PUTS (cp, fmt->f_comp->c_text);
	    break;
	case FT_COMPF:
	    PUTSF (cp, fmt->f_comp->c_text, fmt->f_width, fmt->f_fill);
	    break;

	case FT_LIT:
	    sp = fmt->f_text;
	    while( (ch = *sp++) && cp < ep)
		*cp++ = ch;
	    break;
	case FT_LITF:
	    sp = fmt->f_text;
	    ljust = 0;
	    i = fmt->f_width;
	    if (i < 0) {
		i = -i;
		ljust++;		/* XXX should do something with this */
	    }
	    while ((ch = *sp++) && --i >= 0 && cp < ep)
		*cp++ = ch;
	    while( --i >= 0 && cp < ep)
		*cp++ = fmt->f_fill;
	    break;

	case FT_STR:
	    PUTS (cp, str);
	    break;
	case FT_STRF:
	    PUTSF (cp, str, fmt->f_width, fmt->f_fill);
	    break;
	case FT_STRFW:
	    adios (NULLCP, "internal error (FT_STRFW)");

	case FT_NUM:
	    PUTD (cp, value);
	    break;
	case FT_NUMF:
	    PUTDF (cp, value, fmt->f_width, fmt->f_fill);
	    break;

	case FT_CHAR:
	    *cp++ = fmt->f_char;
	    break;

	case FT_DONE:
	    goto finished;

	case FT_IF_S:
	    if (!(value = (str && *str))) {
		fmt += fmt->f_skip;
		continue;
	    }
	    break;

	case FT_IF_S_NULL:
	    if (!(value = (str == NULLCP || *str == 0))) {
		fmt += fmt->f_skip;
		continue;
	    }
	    break;

	case FT_IF_V_EQ:
	    if (value != fmt->f_value) {
		fmt += fmt->f_skip;
		continue;
	    }
	    break;

	case FT_IF_V_NE:
	    if (value == fmt->f_value) {
		fmt += fmt->f_skip;
		continue;
	    }
	    break;

	case FT_IF_V_GT:
	    if (value <= fmt->f_value) {
		fmt += fmt->f_skip;
		continue;
	    }
	    break;

	case FT_IF_MATCH:
	    if (!(value = (str && match (str, fmt->f_text)))) {
		fmt += fmt->f_skip;
		continue;
	    }
	    break;

	case FT_V_MATCH:
	    if (str)
		value = match (str, fmt->f_text);
	    else
		value = 0;
	    break;

	case FT_IF_AMATCH:
	    if (!(value = (str && uprf (str, fmt->f_text)))) {
		fmt += fmt->f_skip;
		continue;
	    }
	    break;

	case FT_V_AMATCH:
	    value = uprf (str, fmt->f_text);
	    break;

	case FT_S_NONNULL:
	    value = (str != NULLCP && *str != 0);
	    break;

	case FT_S_NULL:
	    value = (str == NULLCP || *str == 0);
	    break;

	case FT_V_EQ:
	    value = (fmt->f_value == value);
	    break;

	case FT_V_NE:
	    value = (fmt->f_value != value);
	    break;

	case FT_V_GT:
	    value = (fmt->f_value > value);
	    break;

	case FT_GOTO:
	    fmt += fmt->f_skip;
	    continue;

	case FT_NOP:
	    break;

#ifdef MIME_HEADERS
	case FT_LS_HENCODE:
	    if (str) {
		char *ep;
		if ((ep = malloc((unsigned)strlen(str)*10+1)) == NULL)
		    adios(NULLCP, "out of memory");
		(void) exthdr_encode(str, ep, 0, "");
		(void) strncpy(buffer, ep, BUFSIZ);
		buffer[BUFSIZ-1] = '\0';
		str = buffer;
	    }
	    break;
	case FT_LS_HDECODE:
	    if (str) {
		char *ep;
		if ((ep = malloc((unsigned)strlen(str)+1)) == NULL)
		    adios(NULLCP, "out of memory");
		(void) exthdr_decode(str, ep);
		(void) strncpy(buffer, ep, BUFSIZ);
		buffer[BUFSIZ-1] = '\0';
		str = buffer;
	    }
	    break;
#endif /* MIME_HEADERS */

	case FT_LS_COMP:
	    str = fmt->f_comp->c_text;
	    break;
	case FT_LS_LIT:
	    str = fmt->f_text;
	    break;
	case FT_LS_GETENV:
	    if (!(str = getenv (fmt->f_text)))
		str = "";
	    break;
	case FT_LS_MFIND:
	    if (!(str = m_find (fmt->f_text)))
		str = "";
	    break;
	case FT_LS_TRIM:
	    if (str) {
		    register char *xp;

#if 1
		    (void) strncpy(buffer, str, BUFSIZ);
		    buffer[BUFSIZ-1] = '\0';
#else
		    (void) strcpy(buffer, str);
#endif
		    str = buffer;
#ifdef JAPAN
		    SKIP_SPACE(str);
#else /* JAPAN */
		    while (isspace(*str & 0xff))
			    str++;
#endif /* JAPAN */
		    ljust = 0;
		    if ((i = fmt->f_width) < 0) {
			    i = -i;
			    ljust++;
		    }

		    if (!ljust && i > 0 && strlen(str) > i)
			    str[i] = '\0';
		    xp = str;
#ifdef JAPAN
		    sp = str + strlen(str);
		    while (ch = *xp++) {
			if (ISCNTRL(ch) || ISSPACE(ch))
			    continue;
			if (ch & 0x80) {
			    if (ch2 = *xp++) {
				if (! ISJSPACE(ch, ch2))
				    sp = xp;
			    } else {
				sp = xp - 2;
				break;
			    }
			} else
			    sp = xp;
		    }
		    *sp = '\0';
		    if (ljust && i > 0 && strlen(str) > i) {
			sp = str + strlen(str) - i;
			while (ch = *str) {
			    str++;
			    if (ch & 0x80)
				str++;
			    if (str >= sp)
				break;
			}
		    }
#else /* JAPAN */
		    xp += strlen(str) - 1;
		    while (xp > str && isspace(*xp & 0xff))
			    *xp-- = '\0';
		    if (ljust && i > 0 && strlen(str) > i)
			str += strlen(str) - i;
#endif /* JAPAN */
	    }
	    break;

	case FT_LV_COMPFLAG:
	    value = fmt->f_comp->c_flags;
	    break;
	case FT_LV_COMP:
	    value = (comp = fmt->f_comp)->c_text ? atoi(comp->c_text) : 0;
	    break;
	case FT_LV_LIT:
	    value = fmt->f_value;
	    break;
	case FT_LV_DAT:
	    value = dat[fmt->f_value];
	    break;
	case FT_LV_STRLEN:
	    value = strlen(str);
	    break;
	case FT_LV_CHAR_LEFT:
	    value = width - (cp - scanl);
	    break;
	case FT_LV_PLUS_L:
	    value += fmt->f_value;
	    break;
	case FT_LV_MINUS_L:
	    value = fmt->f_value - value;
	    break;
	case FT_LV_DIVIDE_L:
	    if (fmt->f_value)
		value = value / fmt->f_value;
	    else
		value = 0;
	    break;
	case FT_LV_MODULO_L:
	    if (fmt->f_value)
		value = value % fmt->f_value;
	    else
		value = 0;
	    break;
	case FT_SAVESTR:
	    savestr = str;
	    break;

	case FT_LV_SEC:
	    value = fmt->f_comp->c_tws->tw_sec;
	    break;
	case FT_LV_MIN:
	    value = fmt->f_comp->c_tws->tw_min;
	    break;
	case FT_LV_HOUR:
	    value = fmt->f_comp->c_tws->tw_hour;
	    break;
	case FT_LV_MDAY:
	    value = fmt->f_comp->c_tws->tw_mday;
	    break;
	case FT_LV_MON:
	    value = fmt->f_comp->c_tws->tw_mon + 1;
	    break;
	case FT_LS_MONTH:
	    str = tw_moty[fmt->f_comp->c_tws->tw_mon];
	    break;
	case FT_LS_LMONTH:
	    str = lmonth[fmt->f_comp->c_tws->tw_mon];
	    break;
	case FT_LS_ZONE:
	    str = dtwszone (fmt->f_comp->c_tws);
	    break;
	case FT_LV_YEAR:
#ifndef	YEARMOD
	    value = fmt->f_comp->c_tws->tw_year;
#else	/* YEARMOD */
	    value = (fmt->f_comp->c_tws->tw_year) % 100;
#endif	/* YEARMOD */
	    break;
	case FT_LV_WDAY:
	    if (!(((tws = fmt->f_comp->c_tws)->tw_flags) & (TW_SEXP|TW_SIMP)))
		set_dotw (tws);
	    value = tws->tw_wday;
	    break;
	case FT_LS_DAY:
	    if (!(((tws = fmt->f_comp->c_tws)->tw_flags) & (TW_SEXP|TW_SIMP)))
		set_dotw (tws);
	    str = tw_dotw[tws->tw_wday];
	    break;
	case FT_LS_WEEKDAY:
	    if (!(((tws = fmt->f_comp->c_tws)->tw_flags) & (TW_SEXP|TW_SIMP)))
		set_dotw (tws);
	    str = tw_ldotw[tws->tw_wday];
	    break;
	case FT_LV_YDAY:
	    value = fmt->f_comp->c_tws->tw_yday;
	    break;
	case FT_LV_ZONE:
	    value = fmt->f_comp->c_tws->tw_zone;
	    break;
	case FT_LV_CLOCK:
	    if ((value = fmt->f_comp->c_tws->tw_clock) == 0)
		value = twclock(fmt->f_comp->c_tws);
	    break;
	case FT_LV_RCLOCK:
	    if ((l = fmt->f_comp->c_tws->tw_clock) == 0)
		l = twclock(fmt->f_comp->c_tws);
	    value = time((time_t *) 0) - l;
	    break;
	case FT_LV_DAYF:
	    if (!(((tws = fmt->f_comp->c_tws)->tw_flags) & (TW_SEXP|TW_SIMP)))
		set_dotw (tws);
	    switch (fmt->f_comp->c_tws->tw_flags & TW_SDAY) {
		case TW_SEXP:
		    value = 1; break;
		case TW_SIMP:
		    value = 0; break;
		default:
		    value = -1; break;
	    }
	case FT_LV_ZONEF:
	    if ((fmt->f_comp->c_tws->tw_flags & TW_SZONE) == TW_SZEXP)
		    value = 1;
	    else
		    value = -1;
	    break;
	case FT_LV_DST:
	    value = fmt->f_comp->c_tws->tw_flags & TW_DST;
	    break;
	case FT_LS_822DATE:
	    str = dasctime ( fmt->f_comp->c_tws , TW_ZONE);
	    break;
	case FT_LS_PRETTY:
	    str = dasctime ( fmt->f_comp->c_tws, TW_NULL);
	    break;

	case FT_LS_PERS:
	    str = fmt->f_comp->c_mn->m_pers;
	    break;
	case FT_LS_MBOX:
	    str = fmt->f_comp->c_mn->m_mbox;
	    break;
	case FT_LS_HOST:
	    str = fmt->f_comp->c_mn->m_host;
	    break;
	case FT_LS_PATH:
	    str = fmt->f_comp->c_mn->m_path;
	    break;
	case FT_LS_GNAME:
	    str = fmt->f_comp->c_mn->m_gname;
	    break;
	case FT_LS_NOTE:
	    str = fmt->f_comp->c_mn->m_note;
	    break;
	case FT_LS_822ADDR:
	    str = adrformat( fmt->f_comp->c_mn );
	    break;
	case FT_LV_HOSTTYPE:
	    value = fmt->f_comp->c_mn->m_type;
	    break;
	case FT_LV_INGRPF:
	    value = fmt->f_comp->c_mn->m_ingrp;
	    break;
	case FT_LV_NOHOSTF:
	    value = fmt->f_comp->c_mn->m_nohost;
	    break;
	case FT_LS_ADDR:
	case FT_LS_FRIENDLY:
#ifdef BERK
	    str = fmt->f_comp->c_mn->m_mbox;
#else	/* not BERK */
	    if ((mn = fmt -> f_comp -> c_mn) == &fmt_mnull) {
		str = fmt -> f_comp -> c_text;
		break;
	    }
	    if (fmt -> f_type == FT_LS_ADDR)
		goto unfriendly;
	    if (!(str = mn -> m_pers)
		    && (!(str = get_x400_friendly (mn -> m_mbox, buffer)))) {
		if (str = mn -> m_note) {
		    (void) strcpy (buffer, str);
		    str = buffer;
		    if (*str == '(')
			str++;
		    sp = str + strlen (str) - 1;
		    if (*sp == ')') {
			*sp-- = '\0';
			while (sp >= str)
			    if (*sp == ' ')
				*sp-- = '\0';
			    else
				break;
		    }
		    if (*str)
			break;
		}	    

unfriendly: ;
		switch (mn -> m_type) {
		    case LOCALHOST:
		        str = mn -> m_mbox;
			break;
		    case UUCPHOST:
			(void) sprintf (str = buffer, "%s!%s",
					mn -> m_host, mn -> m_mbox);
			break;
		    default:
			if (mn -> m_mbox)
			    (void) sprintf (str= buffer, "%s@%s", mn -> m_mbox,
					    mn -> m_host);
			else
			    str = mn -> m_text;
			break;
		}
	    }
#endif	/* BERK */
	    break;

	case FT_LOCALDATE:
	    comp = fmt->f_comp;
	    if ((l = comp->c_tws->tw_clock) == 0)
		l = twclock(comp->c_tws);
	    tws = dlocaltime(&l);
	    *comp->c_tws = *tws;
	    break;

	case FT_GMTDATE:
	    comp = fmt->f_comp;
	    if ((l = comp->c_tws->tw_clock) == 0)
		l = twclock(comp->c_tws);
	    tws = dgmtime(&l);
	    *comp->c_tws = *tws;
	    break;

	case FT_PARSEDATE:
	    comp = fmt->f_comp;
	    if ((sp = comp->c_text) && (tws = dparsetime(sp))) {
		*comp->c_tws = *tws;
		comp->c_flags = 0;
	    } else if (comp->c_flags >= 0) {
		bzero ((char *) comp -> c_tws, sizeof *comp -> c_tws);
		comp->c_flags = 1;
	    }
	    break;

	case FT_FORMATADDR:
	    /* hook for custom address list formatting (see replsbr.c) */
	    str = formataddr (savestr, str);
	    break;

	case FT_PUTADDR:
	    /* output the str register as an address component,
	     * splitting it into multiple lines if necessary.  The
	     * value reg. contains the max line length.  The lit.
	     * field may contain a string to prepend to the result
	     * (e.g., "To: ")
	     */
	    {
	    register char *lp = str;
	    register int indent;
	    register int wid = value;
	    register int len = strlen (str);
	    register char *lastb;

	    sp = fmt->f_text;
	    indent = strlen (sp);
	    wid -= indent;
	    if (wid <= 0) wid = 1; /* avoid core dump */
	    while ((ch = *sp++) && (cp < ep))
		*cp++ = ch;
	    while (len > wid) {
		/* try to break at a comma; failing that, break at a
		 * space, failing that, just split the line.
		 */
		lastb = 0; sp = lp + wid;
		while (sp > lp && (ch = *--sp) != ',') {
		    if (! lastb && isspace(ch))
			lastb = sp - 1;
		}
		if (sp == lp)
		    if (! (sp = lastb)) {
			sp = lp + wid - 1;
#ifdef MIME_HEADERS
			if (uprf(lp + (*lp == '(' ? 1 : 0), "=?")) {
			    /* avoid to split MIME encoded-word */
			    char *pp;
			    for (pp = sp + 1; *pp && !isspace(*pp & 0xff); pp++)
				;
			    if (uprf(pp - (*(pp-1) == ')' ? 3 : 2), "?=")) {
				int l = pp - lp;
				if (l <= 75 && indent + l > 76) {
				    int i;
				    for (i = indent + l - 76; i > 0; i--)
					if (*(cp - i) != ' ') {
					    *cp++ = '\n';
					    for (i = 0; i < 76 - l; i++)
						*cp++ = ' ';
					    break;
					}
				    if (i == 0)
					cp -= indent + l - 76;
				}
				sp = pp - 1;
			    }
			}
#endif /* MIME_HEADERS */
		    } else
			while (sp >= lp && isspace(*sp & 0xff))
			    sp--;
		len -= sp - lp + 1;
		while (cp < ep && lp <= sp)
		    *cp++ = *lp++;
		while (isspace(*lp & 0xff))
		    lp++, len--;
		if (*lp) {
		    *cp++ = '\n';
		    for (i=indent; cp < ep && i > 0; i--)
			*cp++ = ' ';
		}
	    }
	    PUTS (cp, lp);
	    }
	    break;

	case FT_PARSEADDR:
	    comp = fmt->f_comp;
	    if (comp->c_mn != &fmt_mnull)
		mnfree (comp->c_mn);
	    if ((sp = comp->c_text) && (sp = getname(sp)) &&
		(mn = getm (sp, NULLCP, 0, fmt_norm, NULLCP))) {
		comp->c_mn = mn;
		while (getname(""))
		    ;
	    } else {
		while (getname(""))		/* XXX */
		    ;
		comp->c_mn = &fmt_mnull;
	    }
	    break;
	    
	case FT_MYMBOX:
	    /*
	     * if there's no component, we say true.  Otherwise we
	     * say "true" only if we can parse the address and it
	     * matches one of our addresses.
	     */
	    comp = fmt->f_comp;
	    if (comp->c_mn != &fmt_mnull)
		mnfree (comp->c_mn);
	    if ((sp = comp->c_text) && (sp = getname(sp)) &&
		(mn = getm (sp, NULLCP, 0, AD_NAME, NULLCP))) {
		comp->c_mn = mn;
		comp->c_flags = ismymbox(mn);
		while (sp = getname(sp))
		    if (comp->c_flags == 0 &&
			(mn = getm (sp, NULLCP, 0, AD_NAME, NULLCP)))
			comp->c_flags |= ismymbox(mn);
	    } else {
		while (getname(""))		/* XXX */
		    ;
		comp->c_flags = (comp->c_text == 0);
		comp->c_mn = &fmt_mnull;
	    }
	    break;

	case FT_ADDTOSEQ:
#ifdef	LBL
	    /* If we're working on a folder (as opposed to a file), add the
	     * current msg to sequence given in literal field.  Don't
	     * disturb string or value registers.
	     */
	    if (fmt_current_folder)
		    (void)m_seqadd(fmt_current_folder, fmt->f_text, dat[0], -1);
#endif
	    break;
	}
	fmt++;
    }
#ifndef JLR
    finished:;
    if (cp[-1] != '\n')
	*cp++ = '\n';
    *cp   = 0;
    return ((struct format *)0);
#else	/* JLR */
    if (cp[-1] != '\n')
	*cp++ = '\n';
    while (fmt->f_type != FT_DONE)
	fmt++;

    finished:;    
    *cp = '\0';
    return (fmt -> f_value ? ++fmt : (struct format *)0);

#endif /* JLR */
}