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 if (iscntrl(*sp) || isspace(*sp)) {
171 #ifdef MULTIBYTE_SUPPORT
172 w = wcwidth(wide_char);
173 if (w >= 0 && remaining >= w) {
174 strncpy(cp, sp, char_len);
187 if (cp + remaining > ep)
191 /* copy string to the right */
192 while (--cp >= *dest)
193 *(cp + remaining) = *cp;
194 /* add padding at the beginning */
196 for (c=remaining; c>0; c--)
201 /* pad remaining space */
202 while (remaining-- > 0 && cp < ep)
209 cpstripped (char **start, char *end, char *str)
217 /* skip any initial control characters or spaces */
218 while ((c = (unsigned char) *s) &&
220 (iscntrl(c) || isspace(c)))
226 /* compact repeated control characters and spaces into a single space */
227 while((c = (unsigned char) *s++) && *start < end)
228 if (!iscntrl(c) && !isspace(c))
231 while ((c = (unsigned char) *s) &&
233 (iscntrl(c) || isspace(c)))
242 static char *lmonth[] = { "January", "February","March", "April",
243 "May", "June", "July", "August",
244 "September","October", "November","December" };
247 get_x400_friendly (char *mbox, char *buffer, int buffer_len)
249 char given[BUFSIZ], surname[BUFSIZ];
258 if (get_x400_comp (mbox, "/PN=", buffer, buffer_len)) {
259 for (mbox = buffer; (mbox = strchr(mbox, '.')); )
265 if (!get_x400_comp (mbox, "/S=", surname, sizeof(surname)))
268 if (get_x400_comp (mbox, "/G=", given, sizeof(given)))
269 snprintf (buffer, buffer_len, "%s %s", given, surname);
271 snprintf (buffer, buffer_len, "%s", surname);
277 get_x400_comp (char *mbox, char *key, char *buffer, int buffer_len)
282 if ((idx = stringdex (key, mbox)) < 0
283 || !(cp = strchr(mbox += idx + strlen (key), '/')))
286 snprintf (buffer, buffer_len, "%*.*s", (int)(cp - mbox), (int)(cp - mbox), mbox);
291 fmt_scan (struct format *format, char *scanl, int width, int *dat)
295 char *savestr = NULL;
296 unsigned char *str = NULL;
297 char buffer[BUFSIZ], buffer2[BUFSIZ];
307 ep = scanl + width - 1;
309 for (fmt = format; fmt->f_type != FT_DONE; fmt++)
310 switch (fmt->f_type) {
313 fmt->f_comp->c_flags &= ~CF_PARSED;
320 switch (fmt->f_type) {
323 cpstripped (&cp, ep, fmt->f_comp->c_text);
326 cptrimmed (&cp, fmt->f_comp->c_text, fmt->f_width, fmt->f_fill, ep - cp);
331 while( (c = *sp++) && cp < ep)
340 ljust++; /* XXX should do something with this */
342 while( (c = *sp++) && --i >= 0 && cp < ep)
344 while( --i >= 0 && cp < ep)
349 cpstripped (&cp, ep, str);
352 cptrimmed (&cp, str, fmt->f_width, fmt->f_fill, ep - cp);
356 while ((c = *sp++) && cp < ep)
360 adios (NULL, "internal error (FT_STRFW)");
363 n = snprintf(cp, ep - cp + 1, "%d", value);
372 cpnumber (&cp, value, fmt->f_width, fmt->f_fill, ep - cp);
383 if (!(value = (str && *str))) {
390 if (!(value = (str == NULL || *str == 0))) {
397 if (value != fmt->f_value) {
404 if (value == fmt->f_value) {
411 if (value <= fmt->f_value) {
418 if (!(value = (str && match (str, fmt->f_text)))) {
426 value = match (str, fmt->f_text);
432 if (!(value = (str && uprf (str, fmt->f_text)))) {
439 value = uprf (str, fmt->f_text);
443 value = (str != NULL && *str != 0);
447 value = (str == NULL || *str == 0);
451 value = (fmt->f_value == value);
455 value = (fmt->f_value != value);
459 value = (fmt->f_value > value);
470 str = fmt->f_comp->c_text;
476 if (!(str = getenv (fmt->f_text)))
480 if (!(str = context_find (fmt->f_text)))
484 case FT_LS_DECODECOMP:
485 if (decode_rfc2047(fmt->f_comp->c_text, buffer2, sizeof(buffer2)))
488 str = fmt->f_comp->c_text;
492 if (str && decode_rfc2047(str, buffer2, sizeof(buffer2)))
500 strncpy(buffer, str, sizeof(buffer));
501 buffer[sizeof(buffer)-1] = '\0';
503 while (isspace(*str))
506 if ((i = fmt->f_width) < 0) {
511 if (!ljust && i > 0 && (int) strlen(str) > i)
514 xp += strlen(str) - 1;
515 while (xp > str && isspace(*xp))
517 if (ljust && i > 0 && (int) strlen(str) > i)
518 str += strlen(str) - i;
523 value = (fmt->f_comp->c_flags & CF_TRUE) != 0;
526 value = (comp = fmt->f_comp)->c_text ? atoi(comp->c_text) : 0;
529 value = fmt->f_value;
532 value = dat[fmt->f_value];
540 case FT_LV_CHAR_LEFT:
541 value = width - (cp - scanl);
544 value += fmt->f_value;
547 value = fmt->f_value - value;
551 value = value / fmt->f_value;
557 value = value % fmt->f_value;
566 value = fmt->f_comp->c_tws->tw_sec;
569 value = fmt->f_comp->c_tws->tw_min;
572 value = fmt->f_comp->c_tws->tw_hour;
575 value = fmt->f_comp->c_tws->tw_mday;
578 value = fmt->f_comp->c_tws->tw_mon + 1;
581 str = tw_moty[fmt->f_comp->c_tws->tw_mon];
584 str = lmonth[fmt->f_comp->c_tws->tw_mon];
587 str = dtwszone (fmt->f_comp->c_tws);
590 value = fmt->f_comp->c_tws->tw_year;
593 if (!(((tws = fmt->f_comp->c_tws)->tw_flags) & (TW_SEXP|TW_SIMP)))
595 value = tws->tw_wday;
598 if (!(((tws = fmt->f_comp->c_tws)->tw_flags) & (TW_SEXP|TW_SIMP)))
600 str = tw_dotw[tws->tw_wday];
603 if (!(((tws = fmt->f_comp->c_tws)->tw_flags) & (TW_SEXP|TW_SIMP)))
605 str = tw_ldotw[tws->tw_wday];
608 value = fmt->f_comp->c_tws->tw_yday;
611 value = fmt->f_comp->c_tws->tw_zone;
614 if ((value = fmt->f_comp->c_tws->tw_clock) == 0)
615 value = dmktime(fmt->f_comp->c_tws);
618 if ((value = fmt->f_comp->c_tws->tw_clock) == 0)
619 value = dmktime(fmt->f_comp->c_tws);
620 value = time((time_t *) 0) - value;
623 if (!(((tws = fmt->f_comp->c_tws)->tw_flags) & (TW_SEXP|TW_SIMP)))
625 switch (fmt->f_comp->c_tws->tw_flags & TW_SDAY) {
634 if ((fmt->f_comp->c_tws->tw_flags & TW_SZONE) == TW_SZEXP)
640 value = fmt->f_comp->c_tws->tw_flags & TW_DST;
643 str = dasctime (fmt->f_comp->c_tws , TW_ZONE);
646 str = dasctime (fmt->f_comp->c_tws, TW_NULL);
650 str = fmt->f_comp->c_mn->m_pers;
653 str = fmt->f_comp->c_mn->m_mbox;
656 str = fmt->f_comp->c_mn->m_host;
659 str = fmt->f_comp->c_mn->m_path;
662 str = fmt->f_comp->c_mn->m_gname;
665 str = fmt->f_comp->c_mn->m_note;
668 str = adrformat( fmt->f_comp->c_mn );
671 value = fmt->f_comp->c_mn->m_type;
674 value = fmt->f_comp->c_mn->m_ingrp;
677 value = fmt->f_comp->c_mn->m_nohost;
681 if ((mn = fmt->f_comp->c_mn) == &fmt_mnull) {
682 str = fmt->f_comp->c_text;
685 if (fmt->f_type == FT_LS_ADDR)
687 if ((str = mn->m_pers) == NULL) {
688 if ((str = mn->m_note)) {
689 strncpy (buffer, str, sizeof(buffer));
690 buffer[sizeof(buffer)-1] = '\0';
694 sp = str + strlen(str) - 1;
703 } else if (!(str = get_x400_friendly (mn->m_mbox,
704 buffer, sizeof(buffer)))) {
706 switch (mn->m_type) {
711 snprintf (buffer, sizeof(buffer), "%s!%s",
712 mn->m_host, mn->m_mbox);
717 snprintf (buffer, sizeof(buffer), "%s@%s",
718 mn->m_mbox, mn->m_host);
730 /* UNQUOTEs RFC-2822 quoted-string and quoted-pair */
734 strncpy(buffer, str, sizeof(buffer));
735 /* strncpy doesn't NUL-terminate if it fills the buffer */
736 buffer[sizeof(buffer)-1] = '\0';
739 /* we will parse from buffer to buffer2 */
740 n = 0; /* n is the input position in str */
741 m = 0; /* m is the ouput position in buffer2 */
743 while ( str[n] != '\0') {
748 buffer2[m++] = str[n++];
754 buffer2[m++] = str[n++];
765 if ((t = comp->c_tws->tw_clock) == 0)
766 t = dmktime(comp->c_tws);
767 tws = dlocaltime(&t);
773 if ((t = comp->c_tws->tw_clock) == 0)
774 t = dmktime(comp->c_tws);
781 if (comp->c_flags & CF_PARSED)
783 if ((sp = comp->c_text) && (tws = dparsetime(sp))) {
785 comp->c_flags &= ~CF_TRUE;
786 } else if ((comp->c_flags & CF_DATEFAB) == 0) {
787 memset ((char *) comp->c_tws, 0, sizeof *comp->c_tws);
788 comp->c_flags = CF_TRUE;
790 comp->c_flags |= CF_PARSED;
794 /* hook for custom address list formatting (see replsbr.c) */
795 str = formataddr (savestr, str);
799 /* The same as formataddr, but doesn't do duplicate suppression */
800 str = concataddr (savestr, str);
804 /* output the str register as an address component,
805 * splitting it into multiple lines if necessary. The
806 * value reg. contains the max line length. The lit.
807 * field may contain a string to prepend to the result
813 int indent, wid, len;
819 indent = strlen (sp);
821 while( (c = *sp++) && cp < ep)
824 /* try to break at a comma; failing that, break at a
827 lastb = 0; sp = lp + wid;
828 while (sp > lp && (c = *--sp) != ',') {
829 if (! lastb && isspace(c))
833 if (! (sp = lastb)) {
835 while (*sp && *sp != ',' && !isspace(*sp))
842 while (cp < ep && lp <= sp)
849 for (i=indent; cp < ep && i > 0; i--)
853 cpstripped (&cp, ep, lp);
859 if (comp->c_flags & CF_PARSED)
861 if (comp->c_mn != &fmt_mnull)
863 if ((sp = comp->c_text) && (sp = getname(sp)) &&
864 (mn = getm (sp, NULL, 0, fmt_norm, NULL))) {
868 comp->c_flags |= CF_PARSED;
870 while (getname("")) /* XXX */
872 comp->c_mn = &fmt_mnull;
878 * if there's no component, we say true. Otherwise we
879 * say "true" only if we can parse the address and it
880 * matches one of our addresses.
883 if (comp->c_mn != &fmt_mnull)
885 if ((sp = comp->c_text) && (sp = getname(sp)) &&
886 (mn = getm (sp, NULL, 0, AD_NAME, NULL))) {
889 comp->c_flags |= CF_TRUE;
891 comp->c_flags &= ~CF_TRUE;
892 while ((sp = getname(sp)))
893 if ((comp->c_flags & CF_TRUE) == 0 &&
894 (mn = getm (sp, NULL, 0, AD_NAME, NULL)))
896 comp->c_flags |= CF_TRUE;
898 while (getname("")) /* XXX */
900 if (comp->c_text == 0)
901 comp->c_flags |= CF_TRUE;
903 comp->c_flags &= ~CF_TRUE;
904 comp->c_mn = &fmt_mnull;
910 /* If we're working on a folder (as opposed to a file), add the
911 * current msg to sequence given in literal field. Don't
912 * disturb string or value registers.
914 if (fmt_current_folder)
915 seq_addmsg(fmt_current_folder, fmt->f_text, dat[0], -1);
926 return ((struct format *)0);
930 while (fmt->f_type != FT_DONE)
935 return (fmt->f_value ? ++fmt : (struct format *) 0);