2 ** fmt_scan.c -- format string interpretation
4 ** This code is Copyright (c) 2002, by the authors of nmh. See the
5 ** COPYRIGHT file in the root directory of the nmh distribution for
6 ** complete copyright information.
10 #include <h/addrsbr.h>
11 #include <h/fmt_scan.h>
13 #include <h/fmt_compile.h>
15 #ifdef TIME_WITH_SYS_TIME
16 # include <sys/time.h>
19 # ifdef TM_IN_SYS_TIME
20 # include <sys/time.h>
25 #ifdef MULTIBYTE_SUPPORT
32 extern char *formataddr(); /* hook for custom address formatting */
35 struct msgs *fmt_current_folder; /* current folder (set by main program) */
38 extern int fmt_norm; /* defined in sbr/fmt_def.c = AD_NAME */
39 struct mailname fmt_mnull;
44 static int match(char *, char *);
45 static char *get_x400_friendly(char *, char *, int);
46 static int get_x400_comp(char *, char *, char *, int);
50 ** test if string "sub" appears anywhere in
51 ** string "str" (case insensitive).
55 match(char *str, char *sub)
62 c1 = (isalpha(c1) && isupper(c1)) ? tolower(c1) : c1;
63 while ((c2 = *str++) && c1 != ((isalpha(c2) && isupper(c2)) ? tolower(c2) : c2))
67 s1 = sub + 1; s2 = str;
68 while ((c1 = *s1++) && ((isalpha(c1) && isupper(c1)) ? tolower(c1) : c1) == ((isalpha(c2 =*s2++) && isupper(c2)) ? tolower(c2) : c2))
75 while ((c2 = *str++) && (c1 | 040) != (c2 | 040))
79 s1 = sub + 1; s2 = str;
80 while ((c1 = *s1++) && (c1 | 040) == (*s2++ | 040))
90 ** copy a number to the destination subject to a maximum width
93 cpnumber(char **dest, int num, unsigned int wid, char fill, size_t n) {
106 *--sp = (i % 10) + '0';
108 } while (i > 0 && sp > cp);
111 else if ((num) < 0 && sp > cp)
121 ** copy string from str to dest padding with the fill character to a size
122 ** of wid characters. if wid is negative, the string is right aligned
123 ** no more than n bytes are copied
126 cptrimmed(char **dest, char *str, unsigned int wid, char fill, size_t n) {
127 int remaining; /* remaining output width available */
129 int end; /* number of input bytes remaining in str */
130 #ifdef MULTIBYTE_SUPPORT
131 int char_len; /* bytes in current character */
134 char *sp; /* current position in source string */
135 char *cp = *dest; /* current position in destination string */
136 char *ep = cp + n; /* end of destination buffer */
141 if ((remaining = (wid)) < 0) {
142 remaining = -remaining;
146 mbtowc(NULL, NULL, 0); /* reset shift state */
148 while (*sp && remaining > 0 && end > 0) {
149 #ifdef MULTIBYTE_SUPPORT
150 char_len = mbtowc(&wide_char, sp, end);
151 if (char_len <= 0 || (cp + char_len > ep))
156 if (iswcntrl(wide_char) || iswspace(wide_char)) {
160 if (iscntrl(*sp) || isspace(*sp)) {
173 #ifdef MULTIBYTE_SUPPORT
174 w = wcwidth(wide_char);
175 if (w >= 0 && remaining >= w) {
176 strncpy(cp, sp, char_len);
189 if (cp + remaining > ep)
193 /* copy string to the right */
194 while (--cp >= *dest)
195 *(cp + remaining) = *cp;
196 /* add padding at the beginning */
198 for (c=remaining; c>0; c--)
203 /* pad remaining space */
204 while (remaining-- > 0 && cp < ep)
211 cpstripped(char **start, char *end, char *str)
219 /* skip any initial control characters or spaces */
220 while ((c = (unsigned char) *s) &&
222 (iscntrl(c) || isspace(c)))
228 /* compact repeated control characters and spaces into a single space */
229 while((c = (unsigned char) *s++) && *start < end)
230 if (!iscntrl(c) && !isspace(c))
233 while ((c = (unsigned char) *s) &&
235 (iscntrl(c) || isspace(c)))
244 static char *lmonth[] = {
245 "January", "February", "March", "April",
246 "May", "June", "July", "August",
247 "September", "October", "November", "December"
251 get_x400_friendly(char *mbox, char *buffer, int buffer_len)
253 char given[BUFSIZ], surname[BUFSIZ];
262 if (get_x400_comp(mbox, "/PN=", buffer, buffer_len)) {
263 for (mbox = buffer; (mbox = strchr(mbox, '.')); )
269 if (!get_x400_comp(mbox, "/S=", surname, sizeof(surname)))
272 if (get_x400_comp(mbox, "/G=", given, sizeof(given)))
273 snprintf(buffer, buffer_len, "%s %s", given, surname);
275 snprintf(buffer, buffer_len, "%s", surname);
281 get_x400_comp(char *mbox, char *key, char *buffer, int buffer_len)
286 if ((idx = stringdex(key, mbox)) < 0
287 || !(cp = strchr(mbox += idx + strlen(key), '/')))
290 snprintf(buffer, buffer_len, "%*.*s", (int)(cp - mbox), (int)(cp - mbox), mbox);
295 fmt_scan(struct format *format, char *scanl, int width, int *dat)
299 char *savestr = NULL;
300 unsigned char *str = NULL;
301 char buffer[BUFSIZ], buffer2[BUFSIZ];
311 ep = scanl + width - 1;
313 for (fmt = format; fmt->f_type != FT_DONE; fmt++)
314 switch (fmt->f_type) {
317 fmt->f_comp->c_flags &= ~CF_PARSED;
324 switch (fmt->f_type) {
327 cpstripped(&cp, ep, fmt->f_comp->c_text);
330 cptrimmed(&cp, fmt->f_comp->c_text, fmt->f_width, fmt->f_fill, ep - cp);
335 while( (c = *sp++) && cp < ep)
344 ljust++; /* XXX should do something with this */
346 while( (c = *sp++) && --i >= 0 && cp < ep)
348 while( --i >= 0 && cp < ep)
353 cpstripped(&cp, ep, str);
356 cptrimmed(&cp, str, fmt->f_width, fmt->f_fill, ep - cp);
359 adios(NULL, "internal error (FT_STRFW)");
362 n = snprintf(cp, ep - cp + 1, "%d", value);
371 cpnumber(&cp, value, fmt->f_width, fmt->f_fill, ep - cp);
382 if (!(value = (str && *str))) {
389 if (!(value = (str == NULL || *str == 0))) {
396 if (value != fmt->f_value) {
403 if (value == fmt->f_value) {
410 if (value <= fmt->f_value) {
417 if (!(value = (str && match(str, fmt->f_text)))) {
425 value = match(str, fmt->f_text);
431 if (!(value = (str && uprf(str, fmt->f_text)))) {
438 value = uprf(str, fmt->f_text);
442 value = (str != NULL && *str != 0);
446 value = (str == NULL || *str == 0);
450 value = (fmt->f_value == value);
454 value = (fmt->f_value != value);
458 value = (fmt->f_value > value);
469 str = fmt->f_comp->c_text;
475 if (!(str = getenv(fmt->f_text)))
479 if (!(str = context_find(fmt->f_text)))
483 case FT_LS_DECODECOMP:
484 if (decode_rfc2047(fmt->f_comp->c_text, buffer2, sizeof(buffer2)))
487 str = fmt->f_comp->c_text;
491 if (str && decode_rfc2047(str, buffer2, sizeof(buffer2)))
499 strncpy(buffer, str, sizeof(buffer));
500 buffer[sizeof(buffer)-1] = '\0';
502 while (isspace(*str))
505 if ((i = fmt->f_width) < 0) {
510 if (!ljust && i > 0 && strlen(str) > i)
513 xp += strlen(str) - 1;
514 while (xp > str && isspace(*xp))
516 if (ljust && i > 0 && strlen(str) > i)
517 str += strlen(str) - i;
522 value = (fmt->f_comp->c_flags & CF_TRUE) != 0;
525 value = (comp = fmt->f_comp)->c_text ? atoi(comp->c_text) : 0;
528 value = fmt->f_value;
531 value = dat[fmt->f_value];
539 case FT_LV_CHAR_LEFT:
540 value = width - (cp - scanl);
543 value += fmt->f_value;
546 value = fmt->f_value - value;
550 value = value / fmt->f_value;
556 value = value % fmt->f_value;
565 value = fmt->f_comp->c_tws->tw_sec;
568 value = fmt->f_comp->c_tws->tw_min;
571 value = fmt->f_comp->c_tws->tw_hour;
574 value = fmt->f_comp->c_tws->tw_mday;
577 value = fmt->f_comp->c_tws->tw_mon + 1;
580 str = tw_moty[fmt->f_comp->c_tws->tw_mon];
583 str = lmonth[fmt->f_comp->c_tws->tw_mon];
586 str = dtwszone(fmt->f_comp->c_tws);
589 value = fmt->f_comp->c_tws->tw_year;
592 if (!(((tws = fmt->f_comp->c_tws)->tw_flags) & (TW_SEXP|TW_SIMP)))
594 value = tws->tw_wday;
597 if (!(((tws = fmt->f_comp->c_tws)->tw_flags) & (TW_SEXP|TW_SIMP)))
599 str = tw_dotw[tws->tw_wday];
602 if (!(((tws = fmt->f_comp->c_tws)->tw_flags) & (TW_SEXP|TW_SIMP)))
604 str = tw_ldotw[tws->tw_wday];
607 value = fmt->f_comp->c_tws->tw_yday;
610 value = fmt->f_comp->c_tws->tw_zone;
613 if ((value = fmt->f_comp->c_tws->tw_clock) == 0)
614 value = dmktime(fmt->f_comp->c_tws);
617 if ((value = fmt->f_comp->c_tws->tw_clock) == 0)
618 value = dmktime(fmt->f_comp->c_tws);
619 value = time((time_t *) 0) - value;
622 if (!(((tws = fmt->f_comp->c_tws)->tw_flags) & (TW_SEXP|TW_SIMP)))
624 switch (fmt->f_comp->c_tws->tw_flags & TW_SDAY) {
633 if ((fmt->f_comp->c_tws->tw_flags & TW_SZONE) == TW_SZEXP)
639 value = fmt->f_comp->c_tws->tw_flags & TW_DST;
642 str = dasctime(fmt->f_comp->c_tws , TW_ZONE);
645 str = dasctime(fmt->f_comp->c_tws, TW_NULL);
649 str = fmt->f_comp->c_mn->m_pers;
652 str = fmt->f_comp->c_mn->m_mbox;
655 str = fmt->f_comp->c_mn->m_host;
658 str = fmt->f_comp->c_mn->m_path;
661 str = fmt->f_comp->c_mn->m_gname;
664 str = fmt->f_comp->c_mn->m_note;
667 str = adrformat( fmt->f_comp->c_mn );
670 value = fmt->f_comp->c_mn->m_type;
673 value = fmt->f_comp->c_mn->m_ingrp;
676 value = fmt->f_comp->c_mn->m_nohost;
680 if ((mn = fmt->f_comp->c_mn) == &fmt_mnull) {
681 str = fmt->f_comp->c_text;
684 if (fmt->f_type == FT_LS_ADDR)
686 if ((str = mn->m_pers) == NULL) {
687 if ((str = mn->m_note)) {
688 strncpy(buffer, str, sizeof(buffer));
689 buffer[sizeof(buffer)-1] = '\0';
693 sp = str + strlen(str) - 1;
702 } else if (!(str = get_x400_friendly(mn->m_mbox,
703 buffer, sizeof(buffer)))) {
705 switch (mn->m_type) {
710 snprintf(buffer, sizeof(buffer), "%s!%s",
711 mn->m_host, mn->m_mbox);
716 snprintf(buffer, sizeof(buffer), "%s@%s",
717 mn->m_mbox, mn->m_host);
728 /* UNQUOTEs RFC-2822 quoted-string and quoted-pair */
732 strncpy(buffer, str, sizeof(buffer));
733 /* strncpy doesn't NUL-terminate if it fills the buffer */
734 buffer[sizeof(buffer)-1] = '\0';
737 /* we will parse from buffer to buffer2 */
738 n = 0; /* n is the input position in str */
739 m = 0; /* m is the ouput position in buffer2 */
741 while ( str[n] != '\0') {
746 buffer2[m++] = str[n++];
752 buffer2[m++] = str[n++];
763 if ((t = comp->c_tws->tw_clock) == 0)
764 t = dmktime(comp->c_tws);
765 tws = dlocaltime(&t);
771 if ((t = comp->c_tws->tw_clock) == 0)
772 t = dmktime(comp->c_tws);
779 if (comp->c_flags & CF_PARSED)
781 if ((sp = comp->c_text) && (tws = dparsetime(sp))) {
783 comp->c_flags &= ~CF_TRUE;
784 } else if ((comp->c_flags & CF_DATEFAB) == 0) {
785 memset((char *) comp->c_tws, 0, sizeof *comp->c_tws);
786 comp->c_flags = CF_TRUE;
788 comp->c_flags |= CF_PARSED;
793 ** hook for custom address list formatting
796 str = formataddr(savestr, str);
801 ** output the str register as an address component,
802 ** splitting it into multiple lines if necessary. The
803 ** value reg. contains the max line length. The lit.
804 ** field may contain a string to prepend to the result
810 int indent, wid, len;
818 while( (c = *sp++) && cp < ep)
821 /* try to break at a comma; failing that,
824 lastb = 0; sp = lp + wid;
825 while (sp > lp && (c = *--sp) != ',') {
826 if (! lastb && isspace(c))
830 if (! (sp = lastb)) {
832 while (*sp && *sp != ',' && !isspace(*sp))
839 while (cp < ep && lp <= sp)
846 for (i=indent; cp < ep && i > 0; i--)
850 cpstripped(&cp, ep, lp);
856 if (comp->c_flags & CF_PARSED)
858 if (comp->c_mn != &fmt_mnull)
860 if ((sp = comp->c_text) && (sp = getname(sp)) &&
861 (mn = getm(sp, NULL, 0, fmt_norm, NULL))) {
865 comp->c_flags |= CF_PARSED;
867 while (getname("")) /* XXX */
869 comp->c_mn = &fmt_mnull;
875 ** if there's no component, we say true. Otherwise we
876 ** say "true" only if we can parse the address and it
877 ** matches one of our addresses.
880 if (comp->c_mn != &fmt_mnull)
882 if ((sp = comp->c_text) && (sp = getname(sp)) &&
883 (mn = getm(sp, NULL, 0, AD_NAME, NULL))) {
886 comp->c_flags |= CF_TRUE;
888 comp->c_flags &= ~CF_TRUE;
889 while ((sp = getname(sp)))
890 if ((comp->c_flags & CF_TRUE) == 0 &&
891 (mn = getm(sp, NULL, 0, AD_NAME, NULL)))
893 comp->c_flags |= CF_TRUE;
895 while (getname("")) /* XXX */
897 if (comp->c_text == 0)
898 comp->c_flags |= CF_TRUE;
900 comp->c_flags &= ~CF_TRUE;
901 comp->c_mn = &fmt_mnull;
908 ** If we're working on a folder (as opposed to a
909 ** file), add the current msg to sequence given
910 ** in literal field. Don't disturb string or
913 if (fmt_current_folder)
914 seq_addmsg(fmt_current_folder, fmt->f_text, dat[0], -1);
925 return ((struct format *)0);
929 while (fmt->f_type != FT_DONE)
934 return (fmt->f_value ? ++fmt : (struct format *) 0);