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
29 struct msgs *fmt_current_folder; /* current folder (set by main program) */
32 extern int fmt_norm; /* defined in sbr/fmt_def.c = AD_NAME */
33 struct mailname fmt_mnull = { NULL, NULL, NULL, NULL, NULL, NULL, 0, 0, 0, 0,
39 static int match (char *, char *);
40 static char *get_x400_friendly (char *, char *, int);
41 static int get_x400_comp (char *, char *, char *, int);
45 * test if string "sub" appears anywhere in
46 * string "str" (case insensitive).
50 match (char *str, char *sub)
57 c1 = (isalpha(c1) && isupper(c1)) ? tolower(c1) : c1;
58 while ((c2 = *str++) && c1 != ((isalpha(c2) && isupper(c2)) ? tolower(c2) : c2))
62 s1 = sub + 1; s2 = str;
63 while ((c1 = *s1++) && ((isalpha(c1) && isupper(c1)) ? tolower(c1) : c1) == ((isalpha(c2 =*s2++) && isupper(c2)) ? tolower(c2) : c2))
70 while ((c2 = *str++) && (c1 | 040) != (c2 | 040))
74 s1 = sub + 1; s2 = str;
75 while ((c1 = *s1++) && (c1 | 040) == (*s2++ | 040))
85 * copy a number to the destination subject to a maximum width
88 cpnumber(char **dest, int num, unsigned int wid, char fill, size_t n) {
101 *--sp = (i % 10) + '0';
103 } while (i > 0 && sp > cp);
106 else if ((num) < 0 && sp > cp)
116 * copy string from str to dest padding with the fill character to a size
117 * of wid characters. if wid is negative, the string is right aligned
118 * no more than n bytes are copied
121 cptrimmed(char **dest, char *str, unsigned int wid, char fill, size_t n) {
122 int remaining; /* remaining output width available */
124 int end; /* number of input bytes remaining in str */
125 #ifdef MULTIBYTE_SUPPORT
126 int char_len; /* bytes in current character */
130 char *sp; /* current position in source string */
131 char *cp = *dest; /* current position in destination string */
132 char *ep = cp + n; /* end of destination buffer */
137 if ((remaining = (wid)) < 0) {
138 remaining = -remaining;
142 mbtowc(NULL, NULL, 0); /* reset shift state */
144 while (*sp && remaining > 0 && end > 0) {
145 #ifdef MULTIBYTE_SUPPORT
146 char_len = mbtowc(&wide_char, sp, end);
147 if (char_len <= 0 || (cp + char_len > ep))
152 if (iswcntrl(wide_char) || iswspace(wide_char)) {
156 /* isnctrl(), etc., take an int argument. Cygwin's ctype.h
157 intentionally warns if they are passed a char. */
159 if (iscntrl(c) || isspace(c)) {
172 #ifdef MULTIBYTE_SUPPORT
173 w = wcwidth(wide_char);
174 if (w >= 0 && remaining >= w) {
175 strncpy(cp, sp, char_len);
188 if (cp + remaining > ep)
192 /* copy string to the right */
193 while (--cp >= *dest)
194 *(cp + remaining) = *cp;
195 /* add padding at the beginning */
197 for (c=remaining; c>0; c--)
202 /* pad remaining space */
203 while (remaining-- > 0 && cp < ep)
210 cpstripped (char **start, char *end, char *str)
218 /* skip any initial control characters or spaces */
219 while ((c = (unsigned char) *s) &&
221 (iscntrl(c) || isspace(c)))
227 /* compact repeated control characters and spaces into a single space */
228 while((c = (unsigned char) *s++) && *start < end)
229 if (!iscntrl(c) && !isspace(c))
232 while ((c = (unsigned char) *s) &&
234 (iscntrl(c) || isspace(c)))
243 static char *lmonth[] = { "January", "February","March", "April",
244 "May", "June", "July", "August",
245 "September","October", "November","December" };
248 get_x400_friendly (char *mbox, char *buffer, int buffer_len)
250 char given[BUFSIZ], surname[BUFSIZ];
259 if (get_x400_comp (mbox, "/PN=", buffer, buffer_len)) {
260 for (mbox = buffer; (mbox = strchr(mbox, '.')); )
266 if (!get_x400_comp (mbox, "/S=", surname, sizeof(surname)))
269 if (get_x400_comp (mbox, "/G=", given, sizeof(given)))
270 snprintf (buffer, buffer_len, "%s %s", given, surname);
272 snprintf (buffer, buffer_len, "%s", surname);
278 get_x400_comp (char *mbox, char *key, char *buffer, int buffer_len)
283 if ((idx = stringdex (key, mbox)) < 0
284 || !(cp = strchr(mbox += idx + strlen (key), '/')))
287 snprintf (buffer, buffer_len, "%*.*s", (int)(cp - mbox), (int)(cp - mbox), mbox);
292 fmt_scan (struct format *format, char *scanl, int width, int *dat)
296 char *savestr = NULL;
297 unsigned char *str = NULL;
298 char buffer[BUFSIZ], buffer2[BUFSIZ];
308 ep = scanl + width - 1;
310 for (fmt = format; fmt->f_type != FT_DONE; fmt++)
311 switch (fmt->f_type) {
314 fmt->f_comp->c_flags &= ~CF_PARSED;
319 case FT_LS_DECODECOMP:
321 * Trim these components of any newlines.
323 * But don't trim the "body" and "text" components.
328 if (! (comp->c_flags & CF_TRIMMED) && comp->c_text) {
329 i = strlen(comp->c_text);
330 if (comp->c_text[i - 1] == '\n' &&
331 strcmp(comp->c_name, "body") != 0 &&
332 strcmp(comp->c_name, "text") != 0)
333 comp->c_text[i - 1] = '\0';
334 comp->c_flags |= CF_TRIMMED;
342 switch (fmt->f_type) {
345 cpstripped (&cp, ep, fmt->f_comp->c_text);
348 cptrimmed (&cp, fmt->f_comp->c_text, fmt->f_width, fmt->f_fill, ep - cp);
353 while( (c = *sp++) && cp < ep)
362 ljust++; /* XXX should do something with this */
364 while( (c = *sp++) && --i >= 0 && cp < ep)
366 while( --i >= 0 && cp < ep)
371 cpstripped (&cp, ep, str);
374 cptrimmed (&cp, str, fmt->f_width, fmt->f_fill, ep - cp);
378 while ((c = *sp++) && cp < ep)
382 adios (NULL, "internal error (FT_STRFW)");
385 n = snprintf(cp, ep - cp + 1, "%d", value);
394 cpnumber (&cp, value, fmt->f_width, fmt->f_fill, ep - cp);
405 if (!(value = (str && *str))) {
412 if (!(value = (str == NULL || *str == 0))) {
419 if (value != fmt->f_value) {
426 if (value == fmt->f_value) {
433 if (value <= fmt->f_value) {
440 if (!(value = (str && match (str, fmt->f_text)))) {
448 value = match (str, fmt->f_text);
454 if (!(value = (str && uprf (str, fmt->f_text)))) {
461 value = uprf (str, fmt->f_text);
465 value = (str != NULL && *str != 0);
469 value = (str == NULL || *str == 0);
473 value = (fmt->f_value == value);
477 value = (fmt->f_value != value);
481 value = (fmt->f_value > value);
492 str = fmt->f_comp->c_text;
498 if (!(str = getenv (fmt->f_text)))
502 if (!(str = context_find (fmt->f_text)))
506 case FT_LS_DECODECOMP:
507 if (decode_rfc2047(fmt->f_comp->c_text, buffer2, sizeof(buffer2)))
510 str = fmt->f_comp->c_text;
514 if (str && decode_rfc2047(str, buffer2, sizeof(buffer2)))
522 strncpy(buffer, str, sizeof(buffer));
523 buffer[sizeof(buffer)-1] = '\0';
525 while (isspace(*str))
528 if ((i = fmt->f_width) < 0) {
533 if (!ljust && i > 0 && (int) strlen(str) > i)
536 xp += strlen(str) - 1;
537 while (xp > str && isspace(*xp))
539 if (ljust && i > 0 && (int) strlen(str) > i)
540 str += strlen(str) - i;
545 value = (fmt->f_comp->c_flags & CF_TRUE) != 0;
548 value = (comp = fmt->f_comp)->c_text ? atoi(comp->c_text) : 0;
551 value = fmt->f_value;
554 value = dat[fmt->f_value];
562 case FT_LV_CHAR_LEFT:
563 value = width - (cp - scanl);
566 value += fmt->f_value;
569 value = fmt->f_value - value;
573 value = value / fmt->f_value;
579 value = value % fmt->f_value;
588 value = fmt->f_comp->c_tws->tw_sec;
591 value = fmt->f_comp->c_tws->tw_min;
594 value = fmt->f_comp->c_tws->tw_hour;
597 value = fmt->f_comp->c_tws->tw_mday;
600 value = fmt->f_comp->c_tws->tw_mon + 1;
603 str = tw_moty[fmt->f_comp->c_tws->tw_mon];
606 str = lmonth[fmt->f_comp->c_tws->tw_mon];
609 str = dtwszone (fmt->f_comp->c_tws);
612 value = fmt->f_comp->c_tws->tw_year;
615 if (!(((tws = fmt->f_comp->c_tws)->tw_flags) & (TW_SEXP|TW_SIMP)))
617 value = tws->tw_wday;
620 if (!(((tws = fmt->f_comp->c_tws)->tw_flags) & (TW_SEXP|TW_SIMP)))
622 str = tw_dotw[tws->tw_wday];
625 if (!(((tws = fmt->f_comp->c_tws)->tw_flags) & (TW_SEXP|TW_SIMP)))
627 str = tw_ldotw[tws->tw_wday];
630 value = fmt->f_comp->c_tws->tw_yday;
633 value = fmt->f_comp->c_tws->tw_zone;
636 if ((value = fmt->f_comp->c_tws->tw_clock) == 0)
637 value = dmktime(fmt->f_comp->c_tws);
640 if ((value = fmt->f_comp->c_tws->tw_clock) == 0)
641 value = dmktime(fmt->f_comp->c_tws);
642 value = time((time_t *) 0) - value;
645 if (!(((tws = fmt->f_comp->c_tws)->tw_flags) & (TW_SEXP|TW_SIMP)))
647 switch (fmt->f_comp->c_tws->tw_flags & TW_SDAY) {
656 if ((fmt->f_comp->c_tws->tw_flags & TW_SZONE) == TW_SZEXP)
662 value = fmt->f_comp->c_tws->tw_flags & TW_DST;
665 str = dasctime (fmt->f_comp->c_tws , TW_ZONE);
668 str = dasctime (fmt->f_comp->c_tws, TW_NULL);
672 str = fmt->f_comp->c_mn->m_pers;
675 str = fmt->f_comp->c_mn->m_mbox;
678 str = fmt->f_comp->c_mn->m_host;
681 str = fmt->f_comp->c_mn->m_path;
684 str = fmt->f_comp->c_mn->m_gname;
687 str = fmt->f_comp->c_mn->m_note;
690 str = adrformat( fmt->f_comp->c_mn );
693 value = fmt->f_comp->c_mn->m_type;
696 value = fmt->f_comp->c_mn->m_ingrp;
699 value = fmt->f_comp->c_mn->m_nohost;
703 if ((mn = fmt->f_comp->c_mn) == &fmt_mnull) {
704 str = fmt->f_comp->c_text;
707 if (fmt->f_type == FT_LS_ADDR)
709 if ((str = mn->m_pers) == NULL) {
710 if ((str = mn->m_note)) {
711 strncpy (buffer, str, sizeof(buffer));
712 buffer[sizeof(buffer)-1] = '\0';
716 sp = str + strlen(str) - 1;
725 } else if (!(str = get_x400_friendly (mn->m_mbox,
726 buffer, sizeof(buffer)))) {
728 switch (mn->m_type) {
733 snprintf (buffer, sizeof(buffer), "%s!%s",
734 mn->m_host, mn->m_mbox);
739 snprintf (buffer, sizeof(buffer), "%s@%s",
740 mn->m_mbox, mn->m_host);
752 /* UNQUOTEs RFC-2822 quoted-string and quoted-pair */
756 strncpy(buffer, str, sizeof(buffer));
757 /* strncpy doesn't NUL-terminate if it fills the buffer */
758 buffer[sizeof(buffer)-1] = '\0';
761 /* we will parse from buffer to buffer2 */
762 n = 0; /* n is the input position in str */
763 m = 0; /* m is the ouput position in buffer2 */
765 while ( str[n] != '\0') {
770 buffer2[m++] = str[n++];
776 buffer2[m++] = str[n++];
787 if ((t = comp->c_tws->tw_clock) == 0)
788 t = dmktime(comp->c_tws);
789 tws = dlocaltime(&t);
795 if ((t = comp->c_tws->tw_clock) == 0)
796 t = dmktime(comp->c_tws);
803 if (comp->c_flags & CF_PARSED)
805 if ((sp = comp->c_text) && (tws = dparsetime(sp))) {
807 comp->c_flags &= ~CF_TRUE;
808 } else if ((comp->c_flags & CF_DATEFAB) == 0) {
809 memset ((char *) comp->c_tws, 0, sizeof *comp->c_tws);
810 comp->c_flags = CF_TRUE;
812 comp->c_flags |= CF_PARSED;
816 /* hook for custom address list formatting (see replsbr.c) */
817 str = formataddr (savestr, str);
821 /* The same as formataddr, but doesn't do duplicate suppression */
822 str = concataddr (savestr, str);
826 /* output the str register as an address component,
827 * splitting it into multiple lines if necessary. The
828 * value reg. contains the max line length. The lit.
829 * field may contain a string to prepend to the result
835 int indent, wid, len;
841 indent = strlen (sp);
844 adios(NULL, "putaddr -- num register (%d) must be greater "
845 "than label width (%d)", value, indent);
847 while( (c = *sp++) && cp < ep)
850 /* try to break at a comma; failing that, break at a
853 lastb = 0; sp = lp + wid;
854 while (sp > lp && (c = *--sp) != ',') {
855 if (! lastb && isspace(c))
859 if (! (sp = lastb)) {
861 while (*sp && *sp != ',' && !isspace(*sp))
868 while (cp < ep && lp <= sp)
875 for (i=indent; cp < ep && i > 0; i--)
879 cpstripped (&cp, ep, lp);
885 if (comp->c_flags & CF_PARSED)
887 if (comp->c_mn != &fmt_mnull)
889 if ((sp = comp->c_text) && (sp = getname(sp)) &&
890 (mn = getm (sp, NULL, 0, fmt_norm, NULL))) {
894 comp->c_flags |= CF_PARSED;
896 while (getname("")) /* XXX */
898 comp->c_mn = &fmt_mnull;
904 * if there's no component, we say true. Otherwise we
905 * say "true" only if we can parse the address and it
906 * matches one of our addresses.
909 if (comp->c_mn != &fmt_mnull)
911 if ((sp = comp->c_text) && (sp = getname(sp)) &&
912 (mn = getm (sp, NULL, 0, AD_NAME, NULL))) {
915 comp->c_flags |= CF_TRUE;
917 comp->c_flags &= ~CF_TRUE;
918 while ((sp = getname(sp)))
919 if ((comp->c_flags & CF_TRUE) == 0 &&
920 (mn = getm (sp, NULL, 0, AD_NAME, NULL)))
922 comp->c_flags |= CF_TRUE;
924 while (getname("")) /* XXX */
926 if (comp->c_text == 0)
927 comp->c_flags |= CF_TRUE;
929 comp->c_flags &= ~CF_TRUE;
930 comp->c_mn = &fmt_mnull;
936 /* If we're working on a folder (as opposed to a file), add the
937 * current msg to sequence given in literal field. Don't
938 * disturb string or value registers.
940 if (fmt_current_folder)
941 seq_addmsg(fmt_current_folder, fmt->f_text, dat[0], -1);
952 return ((struct format *)0);
956 while (fmt->f_type != FT_DONE)
961 return (fmt->f_value ? ++fmt : (struct format *) 0);