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.
11 #include <h/addrsbr.h>
12 #include <h/fmt_scan.h>
14 #include <h/fmt_compile.h>
16 #ifdef HAVE_SYS_TIME_H
17 # include <sys/time.h>
20 #ifdef MULTIBYTE_SUPPORT
25 extern char *formataddr (); /* hook for custom address formatting */
28 struct msgs *fmt_current_folder; /* current folder (set by main program) */
31 extern int fmt_norm; /* defined in sbr/fmt_def.c = AD_NAME */
32 struct mailname fmt_mnull;
37 static int match (char *, char *);
38 static char *get_x400_friendly (char *, char *, int);
39 static int get_x400_comp (char *, char *, char *, int);
43 * test if string "sub" appears anywhere in
44 * string "str" (case insensitive).
48 match (char *str, char *sub)
55 c1 = (isalpha(c1) && isupper(c1)) ? tolower(c1) : c1;
56 while ((c2 = *str++) && c1 != ((isalpha(c2) && isupper(c2)) ? tolower(c2) : c2))
60 s1 = sub + 1; s2 = str;
61 while ((c1 = *s1++) && ((isalpha(c1) && isupper(c1)) ? tolower(c1) : c1) == ((isalpha(c2 =*s2++) && isupper(c2)) ? tolower(c2) : c2))
68 while ((c2 = *str++) && (c1 | 040) != (c2 | 040))
72 s1 = sub + 1; s2 = str;
73 while ((c1 = *s1++) && (c1 | 040) == (*s2++ | 040))
83 * copy a number to the destination subject to a maximum width
86 cpnumber(char **dest, int num, unsigned int wid, char fill, size_t n) {
99 *--sp = (i % 10) + '0';
101 } while (i > 0 && sp > cp);
104 else if ((num) < 0 && sp > cp)
114 * copy string from str to dest padding with the fill character to a size
115 * of wid characters. if wid is negative, the string is right aligned
116 * no more than n bytes are copied
119 cptrimmed(char **dest, char *str, unsigned int wid, char fill, size_t n) {
120 int remaining; /* remaining output width available */
122 int end; /* number of input bytes remaining in str */
123 #ifdef MULTIBYTE_SUPPORT
124 int char_len; /* bytes in current character */
128 char *sp; /* current position in source string */
129 char *cp = *dest; /* current position in destination string */
130 char *ep = cp + n; /* end of destination buffer */
135 if ((remaining = (wid)) < 0) {
136 remaining = -remaining;
140 mbtowc(NULL, NULL, 0); /* reset shift state */
142 while (*sp && remaining > 0 && end > 0) {
143 #ifdef MULTIBYTE_SUPPORT
144 char_len = mbtowc(&wide_char, sp, end);
145 if (char_len <= 0 || (cp + char_len > ep))
150 if (iswcntrl(wide_char) || iswspace(wide_char)) {
154 if (iscntrl(*sp) || isspace(*sp)) {
167 #ifdef MULTIBYTE_SUPPORT
168 w = wcwidth(wide_char);
169 if (w >= 0 && remaining >= w) {
170 strncpy(cp, sp, char_len);
183 if (cp + remaining > ep)
187 /* copy string to the right */
188 while (--cp >= *dest)
189 *(cp + remaining) = *cp;
190 /* add padding at the beginning */
192 for (c=remaining; c>0; c--)
197 /* pad remaining space */
198 while (remaining-- > 0 && cp < ep)
205 cpstripped (char **start, char *end, char *str)
213 /* skip any initial control characters or spaces */
214 while ((c = (unsigned char) *s) &&
216 (iscntrl(c) || isspace(c)))
222 /* compact repeated control characters and spaces into a single space */
223 while((c = (unsigned char) *s++) && *start < end)
224 if (!iscntrl(c) && !isspace(c))
227 while ((c = (unsigned char) *s) &&
229 (iscntrl(c) || isspace(c)))
238 static char *lmonth[] = { "January", "February","March", "April",
239 "May", "June", "July", "August",
240 "September","October", "November","December" };
243 get_x400_friendly (char *mbox, char *buffer, int buffer_len)
245 char given[BUFSIZ], surname[BUFSIZ];
254 if (get_x400_comp (mbox, "/PN=", buffer, buffer_len)) {
255 for (mbox = buffer; (mbox = strchr(mbox, '.')); )
261 if (!get_x400_comp (mbox, "/S=", surname, sizeof(surname)))
264 if (get_x400_comp (mbox, "/G=", given, sizeof(given)))
265 snprintf (buffer, buffer_len, "%s %s", given, surname);
267 snprintf (buffer, buffer_len, "%s", surname);
273 get_x400_comp (char *mbox, char *key, char *buffer, int buffer_len)
278 if ((idx = stringdex (key, mbox)) < 0
279 || !(cp = strchr(mbox += idx + strlen (key), '/')))
282 snprintf (buffer, buffer_len, "%*.*s", (int)(cp - mbox), (int)(cp - mbox), mbox);
287 fmt_scan (struct format *format, char *scanl, int width, int *dat)
291 char *savestr = NULL;
292 unsigned char *str = NULL;
293 char buffer[BUFSIZ], buffer2[BUFSIZ];
303 ep = scanl + width - 1;
305 for (fmt = format; fmt->f_type != FT_DONE; fmt++)
306 switch (fmt->f_type) {
309 fmt->f_comp->c_flags &= ~CF_PARSED;
316 switch (fmt->f_type) {
319 cpstripped (&cp, ep, fmt->f_comp->c_text);
322 cptrimmed (&cp, fmt->f_comp->c_text, fmt->f_width, fmt->f_fill, ep - cp);
327 while( (c = *sp++) && cp < ep)
336 ljust++; /* XXX should do something with this */
338 while( (c = *sp++) && --i >= 0 && cp < ep)
340 while( --i >= 0 && cp < ep)
345 cpstripped (&cp, ep, str);
348 cptrimmed (&cp, str, fmt->f_width, fmt->f_fill, ep - cp);
351 adios (NULL, "internal error (FT_STRFW)");
354 n = snprintf(cp, ep - cp + 1, "%d", value);
363 cpnumber (&cp, value, fmt->f_width, fmt->f_fill, ep - cp);
374 if (!(value = (str && *str))) {
381 if (!(value = (str == NULL || *str == 0))) {
388 if (value != fmt->f_value) {
395 if (value == fmt->f_value) {
402 if (value <= fmt->f_value) {
409 if (!(value = (str && match (str, fmt->f_text)))) {
417 value = match (str, fmt->f_text);
423 if (!(value = (str && uprf (str, fmt->f_text)))) {
430 value = uprf (str, fmt->f_text);
434 value = (str != NULL && *str != 0);
438 value = (str == NULL || *str == 0);
442 value = (fmt->f_value == value);
446 value = (fmt->f_value != value);
450 value = (fmt->f_value > value);
461 str = fmt->f_comp->c_text;
467 if (!(str = getenv (fmt->f_text)))
471 if (!(str = context_find (fmt->f_text)))
475 case FT_LS_DECODECOMP:
476 if (decode_rfc2047(fmt->f_comp->c_text, buffer2, sizeof(buffer2)))
479 str = fmt->f_comp->c_text;
483 if (str && decode_rfc2047(str, buffer2, sizeof(buffer2)))
491 strncpy(buffer, str, sizeof(buffer));
492 buffer[sizeof(buffer)-1] = '\0';
494 while (isspace(*str))
497 if ((i = fmt->f_width) < 0) {
502 if (!ljust && i > 0 && strlen(str) > i)
505 xp += strlen(str) - 1;
506 while (xp > str && isspace(*xp))
508 if (ljust && i > 0 && strlen(str) > i)
509 str += strlen(str) - i;
514 value = (fmt->f_comp->c_flags & CF_TRUE) != 0;
517 value = (comp = fmt->f_comp)->c_text ? atoi(comp->c_text) : 0;
520 value = fmt->f_value;
523 value = dat[fmt->f_value];
531 case FT_LV_CHAR_LEFT:
532 value = width - (cp - scanl);
535 value += fmt->f_value;
538 value = fmt->f_value - value;
542 value = value / fmt->f_value;
548 value = value % fmt->f_value;
557 value = fmt->f_comp->c_tws->tw_sec;
560 value = fmt->f_comp->c_tws->tw_min;
563 value = fmt->f_comp->c_tws->tw_hour;
566 value = fmt->f_comp->c_tws->tw_mday;
569 value = fmt->f_comp->c_tws->tw_mon + 1;
572 str = tw_moty[fmt->f_comp->c_tws->tw_mon];
575 str = lmonth[fmt->f_comp->c_tws->tw_mon];
578 str = dtwszone (fmt->f_comp->c_tws);
581 value = fmt->f_comp->c_tws->tw_year;
584 if (!(((tws = fmt->f_comp->c_tws)->tw_flags) & (TW_SEXP|TW_SIMP)))
586 value = tws->tw_wday;
589 if (!(((tws = fmt->f_comp->c_tws)->tw_flags) & (TW_SEXP|TW_SIMP)))
591 str = tw_dotw[tws->tw_wday];
594 if (!(((tws = fmt->f_comp->c_tws)->tw_flags) & (TW_SEXP|TW_SIMP)))
596 str = tw_ldotw[tws->tw_wday];
599 value = fmt->f_comp->c_tws->tw_yday;
602 value = fmt->f_comp->c_tws->tw_zone;
605 if ((value = fmt->f_comp->c_tws->tw_clock) == 0)
606 value = dmktime(fmt->f_comp->c_tws);
609 if ((value = fmt->f_comp->c_tws->tw_clock) == 0)
610 value = dmktime(fmt->f_comp->c_tws);
611 value = time((time_t *) 0) - value;
614 if (!(((tws = fmt->f_comp->c_tws)->tw_flags) & (TW_SEXP|TW_SIMP)))
616 switch (fmt->f_comp->c_tws->tw_flags & TW_SDAY) {
625 if ((fmt->f_comp->c_tws->tw_flags & TW_SZONE) == TW_SZEXP)
631 value = fmt->f_comp->c_tws->tw_flags & TW_DST;
634 str = dasctime (fmt->f_comp->c_tws , TW_ZONE);
637 str = dasctime (fmt->f_comp->c_tws, TW_NULL);
641 str = fmt->f_comp->c_mn->m_pers;
644 str = fmt->f_comp->c_mn->m_mbox;
647 str = fmt->f_comp->c_mn->m_host;
650 str = fmt->f_comp->c_mn->m_path;
653 str = fmt->f_comp->c_mn->m_gname;
656 str = fmt->f_comp->c_mn->m_note;
659 str = adrformat( fmt->f_comp->c_mn );
662 value = fmt->f_comp->c_mn->m_type;
665 value = fmt->f_comp->c_mn->m_ingrp;
668 value = fmt->f_comp->c_mn->m_nohost;
672 if ((mn = fmt->f_comp->c_mn) == &fmt_mnull) {
673 str = fmt->f_comp->c_text;
676 if (fmt->f_type == FT_LS_ADDR)
678 if ((str = mn->m_pers) == NULL) {
679 if ((str = mn->m_note)) {
680 strncpy (buffer, str, sizeof(buffer));
681 buffer[sizeof(buffer)-1] = '\0';
685 sp = str + strlen(str) - 1;
694 } else if (!(str = get_x400_friendly (mn->m_mbox,
695 buffer, sizeof(buffer)))) {
697 switch (mn->m_type) {
702 snprintf (buffer, sizeof(buffer), "%s!%s",
703 mn->m_host, mn->m_mbox);
708 snprintf (buffer, sizeof(buffer), "%s@%s",
709 mn->m_mbox, mn->m_host);
721 /* UNQUOTEs RFC-2822 quoted-string and quoted-pair */
725 strncpy(buffer, str, sizeof(buffer));
726 /* strncpy doesn't NUL-terminate if it fills the buffer */
727 buffer[sizeof(buffer)-1] = '\0';
730 /* we will parse from buffer to buffer2 */
731 n = 0; /* n is the input position in str */
732 m = 0; /* m is the ouput position in buffer2 */
734 while ( str[n] != '\0') {
739 buffer2[m++] = str[n++];
745 buffer2[m++] = str[n++];
756 if ((t = comp->c_tws->tw_clock) == 0)
757 t = dmktime(comp->c_tws);
758 tws = dlocaltime(&t);
764 if ((t = comp->c_tws->tw_clock) == 0)
765 t = dmktime(comp->c_tws);
772 if (comp->c_flags & CF_PARSED)
774 if ((sp = comp->c_text) && (tws = dparsetime(sp))) {
776 comp->c_flags &= ~CF_TRUE;
777 } else if ((comp->c_flags & CF_DATEFAB) == 0) {
778 memset ((char *) comp->c_tws, 0, sizeof *comp->c_tws);
779 comp->c_flags = CF_TRUE;
781 comp->c_flags |= CF_PARSED;
785 /* hook for custom address list formatting (see replsbr.c) */
786 str = formataddr (savestr, str);
790 /* output the str register as an address component,
791 * splitting it into multiple lines if necessary. The
792 * value reg. contains the max line length. The lit.
793 * field may contain a string to prepend to the result
799 int indent, wid, len;
805 indent = strlen (sp);
807 while( (c = *sp++) && cp < ep)
810 /* try to break at a comma; failing that, break at a
813 lastb = 0; sp = lp + wid;
814 while (sp > lp && (c = *--sp) != ',') {
815 if (! lastb && isspace(c))
819 if (! (sp = lastb)) {
821 while (*sp && *sp != ',' && !isspace(*sp))
828 while (cp < ep && lp <= sp)
835 for (i=indent; cp < ep && i > 0; i--)
839 cpstripped (&cp, ep, lp);
845 if (comp->c_flags & CF_PARSED)
847 if (comp->c_mn != &fmt_mnull)
849 if ((sp = comp->c_text) && (sp = getname(sp)) &&
850 (mn = getm (sp, NULL, 0, fmt_norm, NULL))) {
854 comp->c_flags |= CF_PARSED;
856 while (getname("")) /* XXX */
858 comp->c_mn = &fmt_mnull;
864 * if there's no component, we say true. Otherwise we
865 * say "true" only if we can parse the address and it
866 * matches one of our addresses.
869 if (comp->c_mn != &fmt_mnull)
871 if ((sp = comp->c_text) && (sp = getname(sp)) &&
872 (mn = getm (sp, NULL, 0, AD_NAME, NULL))) {
875 comp->c_flags |= CF_TRUE;
877 comp->c_flags &= ~CF_TRUE;
878 while ((sp = getname(sp)))
879 if ((comp->c_flags & CF_TRUE) == 0 &&
880 (mn = getm (sp, NULL, 0, AD_NAME, NULL)))
882 comp->c_flags |= CF_TRUE;
884 while (getname("")) /* XXX */
886 if (comp->c_text == 0)
887 comp->c_flags |= CF_TRUE;
889 comp->c_flags &= ~CF_TRUE;
890 comp->c_mn = &fmt_mnull;
896 /* If we're working on a folder (as opposed to a file), add the
897 * current msg to sequence given in literal field. Don't
898 * disturb string or value registers.
900 if (fmt_current_folder)
901 seq_addmsg(fmt_current_folder, fmt->f_text, dat[0], -1);
912 return ((struct format *)0);
916 while (fmt->f_type != FT_DONE)
921 return (fmt->f_value ? ++fmt : (struct format *) 0);