3 * fmt_scan.c -- format string interpretation
5 * This code is Copyright (c) 2002, by the authors of nmh. See the
6 * COPYRIGHT file in the root directory of the nmh distribution for
7 * complete copyright information.
9 * This is the engine that processes the format instructions created by
10 * fmt_compile (found in fmt_compile.c).
14 #include <h/addrsbr.h>
15 #include <h/fmt_scan.h>
17 #include <h/fmt_compile.h>
19 #ifdef HAVE_SYS_TIME_H
20 # include <sys/time.h>
23 #ifdef MULTIBYTE_SUPPORT
28 extern char *formataddr (); /* hook for custom address formatting */
29 extern char *concataddr (); /* address formatting but allowing duplicates */
32 struct msgs *fmt_current_folder; /* current folder (set by main program) */
35 extern int fmt_norm; /* defined in sbr/fmt_def.c = AD_NAME */
36 struct mailname fmt_mnull;
41 static int match (char *, char *);
42 static char *get_x400_friendly (char *, char *, int);
43 static int get_x400_comp (char *, char *, char *, int);
47 * test if string "sub" appears anywhere in
48 * string "str" (case insensitive).
52 match (char *str, char *sub)
59 c1 = (isalpha(c1) && isupper(c1)) ? tolower(c1) : c1;
60 while ((c2 = *str++) && c1 != ((isalpha(c2) && isupper(c2)) ? tolower(c2) : c2))
64 s1 = sub + 1; s2 = str;
65 while ((c1 = *s1++) && ((isalpha(c1) && isupper(c1)) ? tolower(c1) : c1) == ((isalpha(c2 =*s2++) && isupper(c2)) ? tolower(c2) : c2))
72 while ((c2 = *str++) && (c1 | 040) != (c2 | 040))
76 s1 = sub + 1; s2 = str;
77 while ((c1 = *s1++) && (c1 | 040) == (*s2++ | 040))
87 * copy a number to the destination subject to a maximum width
90 cpnumber(char **dest, int num, unsigned int wid, char fill, size_t n) {
103 *--sp = (i % 10) + '0';
105 } while (i > 0 && sp > cp);
108 else if ((num) < 0 && sp > cp)
118 * copy string from str to dest padding with the fill character to a size
119 * of wid characters. if wid is negative, the string is right aligned
120 * no more than n bytes are copied
123 cptrimmed(char **dest, char *str, unsigned int wid, char fill, size_t n) {
124 int remaining; /* remaining output width available */
126 int end; /* number of input bytes remaining in str */
127 #ifdef MULTIBYTE_SUPPORT
128 int char_len; /* bytes in current character */
132 char *sp; /* current position in source string */
133 char *cp = *dest; /* current position in destination string */
134 char *ep = cp + n; /* end of destination buffer */
139 if ((remaining = (wid)) < 0) {
140 remaining = -remaining;
144 mbtowc(NULL, NULL, 0); /* reset shift state */
146 while (*sp && remaining > 0 && end > 0) {
147 #ifdef MULTIBYTE_SUPPORT
148 char_len = mbtowc(&wide_char, sp, end);
149 if (char_len <= 0 || (cp + char_len > ep))
154 if (iswcntrl(wide_char) || iswspace(wide_char)) {
158 /* isnctrl(), etc., take an int argument. Cygwin's ctype.h
159 intentionally warns if they are passed a char. */
161 if (iscntrl(c) || isspace(c)) {
174 #ifdef MULTIBYTE_SUPPORT
175 w = wcwidth(wide_char);
176 if (w >= 0 && remaining >= w) {
177 strncpy(cp, sp, char_len);
190 if (cp + remaining > ep)
194 /* copy string to the right */
195 while (--cp >= *dest)
196 *(cp + remaining) = *cp;
197 /* add padding at the beginning */
199 for (c=remaining; c>0; c--)
204 /* pad remaining space */
205 while (remaining-- > 0 && cp < ep)
212 cpstripped (char **start, char *end, char *str)
220 /* skip any initial control characters or spaces */
221 while ((c = (unsigned char) *s) &&
223 (iscntrl(c) || isspace(c)))
229 /* compact repeated control characters and spaces into a single space */
230 while((c = (unsigned char) *s++) && *start < end)
231 if (!iscntrl(c) && !isspace(c))
234 while ((c = (unsigned char) *s) &&
236 (iscntrl(c) || isspace(c)))
245 static char *lmonth[] = { "January", "February","March", "April",
246 "May", "June", "July", "August",
247 "September","October", "November","December" };
250 get_x400_friendly (char *mbox, char *buffer, int buffer_len)
252 char given[BUFSIZ], surname[BUFSIZ];
261 if (get_x400_comp (mbox, "/PN=", buffer, buffer_len)) {
262 for (mbox = buffer; (mbox = strchr(mbox, '.')); )
268 if (!get_x400_comp (mbox, "/S=", surname, sizeof(surname)))
271 if (get_x400_comp (mbox, "/G=", given, sizeof(given)))
272 snprintf (buffer, buffer_len, "%s %s", given, surname);
274 snprintf (buffer, buffer_len, "%s", surname);
280 get_x400_comp (char *mbox, char *key, char *buffer, int buffer_len)
285 if ((idx = stringdex (key, mbox)) < 0
286 || !(cp = strchr(mbox += idx + strlen (key), '/')))
289 snprintf (buffer, buffer_len, "%*.*s", (int)(cp - mbox), (int)(cp - mbox), mbox);
294 fmt_scan (struct format *format, char *scanl, int width, int *dat)
298 char *savestr = NULL;
299 unsigned char *str = NULL;
300 char buffer[BUFSIZ], buffer2[BUFSIZ];
310 ep = scanl + width - 1;
312 for (fmt = format; fmt->f_type != FT_DONE; fmt++)
313 switch (fmt->f_type) {
316 fmt->f_comp->c_flags &= ~CF_PARSED;
323 switch (fmt->f_type) {
326 cpstripped (&cp, ep, fmt->f_comp->c_text);
329 cptrimmed (&cp, fmt->f_comp->c_text, fmt->f_width, fmt->f_fill, ep - cp);
334 while( (c = *sp++) && cp < ep)
343 ljust++; /* XXX should do something with this */
345 while( (c = *sp++) && --i >= 0 && cp < ep)
347 while( --i >= 0 && cp < ep)
352 cpstripped (&cp, ep, str);
355 cptrimmed (&cp, str, fmt->f_width, fmt->f_fill, ep - cp);
359 while ((c = *sp++) && cp < ep)
363 adios (NULL, "internal error (FT_STRFW)");
366 n = snprintf(cp, ep - cp + 1, "%d", value);
375 cpnumber (&cp, value, fmt->f_width, fmt->f_fill, ep - cp);
386 if (!(value = (str && *str))) {
393 if (!(value = (str == NULL || *str == 0))) {
400 if (value != fmt->f_value) {
407 if (value == fmt->f_value) {
414 if (value <= fmt->f_value) {
421 if (!(value = (str && match (str, fmt->f_text)))) {
429 value = match (str, fmt->f_text);
435 if (!(value = (str && uprf (str, fmt->f_text)))) {
442 value = uprf (str, fmt->f_text);
446 value = (str != NULL && *str != 0);
450 value = (str == NULL || *str == 0);
454 value = (fmt->f_value == value);
458 value = (fmt->f_value != value);
462 value = (fmt->f_value > value);
473 str = fmt->f_comp->c_text;
479 if (!(str = getenv (fmt->f_text)))
483 if (!(str = context_find (fmt->f_text)))
487 case FT_LS_DECODECOMP:
488 if (decode_rfc2047(fmt->f_comp->c_text, buffer2, sizeof(buffer2)))
491 str = fmt->f_comp->c_text;
495 if (str && decode_rfc2047(str, buffer2, sizeof(buffer2)))
503 strncpy(buffer, str, sizeof(buffer));
504 buffer[sizeof(buffer)-1] = '\0';
506 while (isspace(*str))
509 if ((i = fmt->f_width) < 0) {
514 if (!ljust && i > 0 && (int) strlen(str) > i)
517 xp += strlen(str) - 1;
518 while (xp > str && isspace(*xp))
520 if (ljust && i > 0 && (int) strlen(str) > i)
521 str += strlen(str) - i;
526 value = (fmt->f_comp->c_flags & CF_TRUE) != 0;
529 value = (comp = fmt->f_comp)->c_text ? atoi(comp->c_text) : 0;
532 value = fmt->f_value;
535 value = dat[fmt->f_value];
543 case FT_LV_CHAR_LEFT:
544 value = width - (cp - scanl);
547 value += fmt->f_value;
550 value = fmt->f_value - value;
554 value = value / fmt->f_value;
560 value = value % fmt->f_value;
569 value = fmt->f_comp->c_tws->tw_sec;
572 value = fmt->f_comp->c_tws->tw_min;
575 value = fmt->f_comp->c_tws->tw_hour;
578 value = fmt->f_comp->c_tws->tw_mday;
581 value = fmt->f_comp->c_tws->tw_mon + 1;
584 str = tw_moty[fmt->f_comp->c_tws->tw_mon];
587 str = lmonth[fmt->f_comp->c_tws->tw_mon];
590 str = dtwszone (fmt->f_comp->c_tws);
593 value = fmt->f_comp->c_tws->tw_year;
596 if (!(((tws = fmt->f_comp->c_tws)->tw_flags) & (TW_SEXP|TW_SIMP)))
598 value = tws->tw_wday;
601 if (!(((tws = fmt->f_comp->c_tws)->tw_flags) & (TW_SEXP|TW_SIMP)))
603 str = tw_dotw[tws->tw_wday];
606 if (!(((tws = fmt->f_comp->c_tws)->tw_flags) & (TW_SEXP|TW_SIMP)))
608 str = tw_ldotw[tws->tw_wday];
611 value = fmt->f_comp->c_tws->tw_yday;
614 value = fmt->f_comp->c_tws->tw_zone;
617 if ((value = fmt->f_comp->c_tws->tw_clock) == 0)
618 value = dmktime(fmt->f_comp->c_tws);
621 if ((value = fmt->f_comp->c_tws->tw_clock) == 0)
622 value = dmktime(fmt->f_comp->c_tws);
623 value = time((time_t *) 0) - value;
626 if (!(((tws = fmt->f_comp->c_tws)->tw_flags) & (TW_SEXP|TW_SIMP)))
628 switch (fmt->f_comp->c_tws->tw_flags & TW_SDAY) {
637 if ((fmt->f_comp->c_tws->tw_flags & TW_SZONE) == TW_SZEXP)
643 value = fmt->f_comp->c_tws->tw_flags & TW_DST;
646 str = dasctime (fmt->f_comp->c_tws , TW_ZONE);
649 str = dasctime (fmt->f_comp->c_tws, TW_NULL);
653 str = fmt->f_comp->c_mn->m_pers;
656 str = fmt->f_comp->c_mn->m_mbox;
659 str = fmt->f_comp->c_mn->m_host;
662 str = fmt->f_comp->c_mn->m_path;
665 str = fmt->f_comp->c_mn->m_gname;
668 str = fmt->f_comp->c_mn->m_note;
671 str = adrformat( fmt->f_comp->c_mn );
674 value = fmt->f_comp->c_mn->m_type;
677 value = fmt->f_comp->c_mn->m_ingrp;
680 value = fmt->f_comp->c_mn->m_nohost;
684 if ((mn = fmt->f_comp->c_mn) == &fmt_mnull) {
685 str = fmt->f_comp->c_text;
688 if (fmt->f_type == FT_LS_ADDR)
690 if ((str = mn->m_pers) == NULL) {
691 if ((str = mn->m_note)) {
692 strncpy (buffer, str, sizeof(buffer));
693 buffer[sizeof(buffer)-1] = '\0';
697 sp = str + strlen(str) - 1;
706 } else if (!(str = get_x400_friendly (mn->m_mbox,
707 buffer, sizeof(buffer)))) {
709 switch (mn->m_type) {
714 snprintf (buffer, sizeof(buffer), "%s!%s",
715 mn->m_host, mn->m_mbox);
720 snprintf (buffer, sizeof(buffer), "%s@%s",
721 mn->m_mbox, mn->m_host);
733 /* UNQUOTEs RFC-2822 quoted-string and quoted-pair */
737 strncpy(buffer, str, sizeof(buffer));
738 /* strncpy doesn't NUL-terminate if it fills the buffer */
739 buffer[sizeof(buffer)-1] = '\0';
742 /* we will parse from buffer to buffer2 */
743 n = 0; /* n is the input position in str */
744 m = 0; /* m is the ouput position in buffer2 */
746 while ( str[n] != '\0') {
751 buffer2[m++] = str[n++];
757 buffer2[m++] = str[n++];
768 if ((t = comp->c_tws->tw_clock) == 0)
769 t = dmktime(comp->c_tws);
770 tws = dlocaltime(&t);
776 if ((t = comp->c_tws->tw_clock) == 0)
777 t = dmktime(comp->c_tws);
784 if (comp->c_flags & CF_PARSED)
786 if ((sp = comp->c_text) && (tws = dparsetime(sp))) {
788 comp->c_flags &= ~CF_TRUE;
789 } else if ((comp->c_flags & CF_DATEFAB) == 0) {
790 memset ((char *) comp->c_tws, 0, sizeof *comp->c_tws);
791 comp->c_flags = CF_TRUE;
793 comp->c_flags |= CF_PARSED;
797 /* hook for custom address list formatting (see replsbr.c) */
798 str = formataddr (savestr, str);
802 /* The same as formataddr, but doesn't do duplicate suppression */
803 str = concataddr (savestr, str);
807 /* output the str register as an address component,
808 * splitting it into multiple lines if necessary. The
809 * value reg. contains the max line length. The lit.
810 * field may contain a string to prepend to the result
816 int indent, wid, len;
822 indent = strlen (sp);
824 while( (c = *sp++) && cp < ep)
827 /* try to break at a comma; failing that, break at a
830 lastb = 0; sp = lp + wid;
831 while (sp > lp && (c = *--sp) != ',') {
832 if (! lastb && isspace(c))
836 if (! (sp = lastb)) {
838 while (*sp && *sp != ',' && !isspace(*sp))
845 while (cp < ep && lp <= sp)
852 for (i=indent; cp < ep && i > 0; i--)
856 cpstripped (&cp, ep, lp);
862 if (comp->c_flags & CF_PARSED)
864 if (comp->c_mn != &fmt_mnull)
866 if ((sp = comp->c_text) && (sp = getname(sp)) &&
867 (mn = getm (sp, NULL, 0, fmt_norm, NULL))) {
871 comp->c_flags |= CF_PARSED;
873 while (getname("")) /* XXX */
875 comp->c_mn = &fmt_mnull;
881 * if there's no component, we say true. Otherwise we
882 * say "true" only if we can parse the address and it
883 * matches one of our addresses.
886 if (comp->c_mn != &fmt_mnull)
888 if ((sp = comp->c_text) && (sp = getname(sp)) &&
889 (mn = getm (sp, NULL, 0, AD_NAME, NULL))) {
892 comp->c_flags |= CF_TRUE;
894 comp->c_flags &= ~CF_TRUE;
895 while ((sp = getname(sp)))
896 if ((comp->c_flags & CF_TRUE) == 0 &&
897 (mn = getm (sp, NULL, 0, AD_NAME, NULL)))
899 comp->c_flags |= CF_TRUE;
901 while (getname("")) /* XXX */
903 if (comp->c_text == 0)
904 comp->c_flags |= CF_TRUE;
906 comp->c_flags &= ~CF_TRUE;
907 comp->c_mn = &fmt_mnull;
913 /* If we're working on a folder (as opposed to a file), add the
914 * current msg to sequence given in literal field. Don't
915 * disturb string or value registers.
917 if (fmt_current_folder)
918 seq_addmsg(fmt_current_folder, fmt->f_text, dat[0], -1);
929 return ((struct format *)0);
933 while (fmt->f_type != FT_DONE)
938 return (fmt->f_value ? ++fmt : (struct format *) 0);