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 = { NULL, NULL, NULL, NULL, NULL, NULL, 0, 0, 0, 0,
42 static int match (char *, char *);
43 static char *get_x400_friendly (char *, char *, int);
44 static int get_x400_comp (char *, char *, char *, int);
48 * test if string "sub" appears anywhere in
49 * string "str" (case insensitive).
53 match (char *str, char *sub)
60 c1 = (isalpha(c1) && isupper(c1)) ? tolower(c1) : c1;
61 while ((c2 = *str++) && c1 != ((isalpha(c2) && isupper(c2)) ? tolower(c2) : c2))
65 s1 = sub + 1; s2 = str;
66 while ((c1 = *s1++) && ((isalpha(c1) && isupper(c1)) ? tolower(c1) : c1) == ((isalpha(c2 =*s2++) && isupper(c2)) ? tolower(c2) : c2))
73 while ((c2 = *str++) && (c1 | 040) != (c2 | 040))
77 s1 = sub + 1; s2 = str;
78 while ((c1 = *s1++) && (c1 | 040) == (*s2++ | 040))
88 * copy a number to the destination subject to a maximum width
91 cpnumber(char **dest, int num, unsigned int wid, char fill, size_t n) {
104 *--sp = (i % 10) + '0';
106 } while (i > 0 && sp > cp);
109 else if ((num) < 0 && sp > cp)
119 * copy string from str to dest padding with the fill character to a size
120 * of wid characters. if wid is negative, the string is right aligned
121 * no more than n bytes are copied
124 cptrimmed(char **dest, char *str, unsigned int wid, char fill, size_t n) {
125 int remaining; /* remaining output width available */
127 int end; /* number of input bytes remaining in str */
128 #ifdef MULTIBYTE_SUPPORT
129 int char_len; /* bytes in current character */
133 char *sp; /* current position in source string */
134 char *cp = *dest; /* current position in destination string */
135 char *ep = cp + n; /* end of destination buffer */
140 if ((remaining = (wid)) < 0) {
141 remaining = -remaining;
145 mbtowc(NULL, NULL, 0); /* reset shift state */
147 while (*sp && remaining > 0 && end > 0) {
148 #ifdef MULTIBYTE_SUPPORT
149 char_len = mbtowc(&wide_char, sp, end);
150 if (char_len <= 0 || (cp + char_len > ep))
155 if (iswcntrl(wide_char) || iswspace(wide_char)) {
159 /* isnctrl(), etc., take an int argument. Cygwin's ctype.h
160 intentionally warns if they are passed a char. */
162 if (iscntrl(c) || isspace(c)) {
175 #ifdef MULTIBYTE_SUPPORT
176 w = wcwidth(wide_char);
177 if (w >= 0 && remaining >= w) {
178 strncpy(cp, sp, char_len);
191 if (cp + remaining > ep)
195 /* copy string to the right */
196 while (--cp >= *dest)
197 *(cp + remaining) = *cp;
198 /* add padding at the beginning */
200 for (c=remaining; c>0; c--)
205 /* pad remaining space */
206 while (remaining-- > 0 && cp < ep)
213 cpstripped (char **start, char *end, char *str)
221 /* skip any initial control characters or spaces */
222 while ((c = (unsigned char) *s) &&
224 (iscntrl(c) || isspace(c)))
230 /* compact repeated control characters and spaces into a single space */
231 while((c = (unsigned char) *s++) && *start < end)
232 if (!iscntrl(c) && !isspace(c))
235 while ((c = (unsigned char) *s) &&
237 (iscntrl(c) || isspace(c)))
246 static char *lmonth[] = { "January", "February","March", "April",
247 "May", "June", "July", "August",
248 "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);
360 while ((c = *sp++) && cp < ep)
364 adios (NULL, "internal error (FT_STRFW)");
367 n = snprintf(cp, ep - cp + 1, "%d", value);
376 cpnumber (&cp, value, fmt->f_width, fmt->f_fill, ep - cp);
387 if (!(value = (str && *str))) {
394 if (!(value = (str == NULL || *str == 0))) {
401 if (value != fmt->f_value) {
408 if (value == fmt->f_value) {
415 if (value <= fmt->f_value) {
422 if (!(value = (str && match (str, fmt->f_text)))) {
430 value = match (str, fmt->f_text);
436 if (!(value = (str && uprf (str, fmt->f_text)))) {
443 value = uprf (str, fmt->f_text);
447 value = (str != NULL && *str != 0);
451 value = (str == NULL || *str == 0);
455 value = (fmt->f_value == value);
459 value = (fmt->f_value != value);
463 value = (fmt->f_value > value);
474 str = fmt->f_comp->c_text;
480 if (!(str = getenv (fmt->f_text)))
484 if (!(str = context_find (fmt->f_text)))
488 case FT_LS_DECODECOMP:
489 if (decode_rfc2047(fmt->f_comp->c_text, buffer2, sizeof(buffer2)))
492 str = fmt->f_comp->c_text;
496 if (str && decode_rfc2047(str, buffer2, sizeof(buffer2)))
504 strncpy(buffer, str, sizeof(buffer));
505 buffer[sizeof(buffer)-1] = '\0';
507 while (isspace(*str))
510 if ((i = fmt->f_width) < 0) {
515 if (!ljust && i > 0 && (int) strlen(str) > i)
518 xp += strlen(str) - 1;
519 while (xp > str && isspace(*xp))
521 if (ljust && i > 0 && (int) strlen(str) > i)
522 str += strlen(str) - i;
527 value = (fmt->f_comp->c_flags & CF_TRUE) != 0;
530 value = (comp = fmt->f_comp)->c_text ? atoi(comp->c_text) : 0;
533 value = fmt->f_value;
536 value = dat[fmt->f_value];
544 case FT_LV_CHAR_LEFT:
545 value = width - (cp - scanl);
548 value += fmt->f_value;
551 value = fmt->f_value - value;
555 value = value / fmt->f_value;
561 value = value % fmt->f_value;
570 value = fmt->f_comp->c_tws->tw_sec;
573 value = fmt->f_comp->c_tws->tw_min;
576 value = fmt->f_comp->c_tws->tw_hour;
579 value = fmt->f_comp->c_tws->tw_mday;
582 value = fmt->f_comp->c_tws->tw_mon + 1;
585 str = tw_moty[fmt->f_comp->c_tws->tw_mon];
588 str = lmonth[fmt->f_comp->c_tws->tw_mon];
591 str = dtwszone (fmt->f_comp->c_tws);
594 value = fmt->f_comp->c_tws->tw_year;
597 if (!(((tws = fmt->f_comp->c_tws)->tw_flags) & (TW_SEXP|TW_SIMP)))
599 value = tws->tw_wday;
602 if (!(((tws = fmt->f_comp->c_tws)->tw_flags) & (TW_SEXP|TW_SIMP)))
604 str = tw_dotw[tws->tw_wday];
607 if (!(((tws = fmt->f_comp->c_tws)->tw_flags) & (TW_SEXP|TW_SIMP)))
609 str = tw_ldotw[tws->tw_wday];
612 value = fmt->f_comp->c_tws->tw_yday;
615 value = fmt->f_comp->c_tws->tw_zone;
618 if ((value = fmt->f_comp->c_tws->tw_clock) == 0)
619 value = dmktime(fmt->f_comp->c_tws);
622 if ((value = fmt->f_comp->c_tws->tw_clock) == 0)
623 value = dmktime(fmt->f_comp->c_tws);
624 value = time((time_t *) 0) - value;
627 if (!(((tws = fmt->f_comp->c_tws)->tw_flags) & (TW_SEXP|TW_SIMP)))
629 switch (fmt->f_comp->c_tws->tw_flags & TW_SDAY) {
638 if ((fmt->f_comp->c_tws->tw_flags & TW_SZONE) == TW_SZEXP)
644 value = fmt->f_comp->c_tws->tw_flags & TW_DST;
647 str = dasctime (fmt->f_comp->c_tws , TW_ZONE);
650 str = dasctime (fmt->f_comp->c_tws, TW_NULL);
654 str = fmt->f_comp->c_mn->m_pers;
657 str = fmt->f_comp->c_mn->m_mbox;
660 str = fmt->f_comp->c_mn->m_host;
663 str = fmt->f_comp->c_mn->m_path;
666 str = fmt->f_comp->c_mn->m_gname;
669 str = fmt->f_comp->c_mn->m_note;
672 str = adrformat( fmt->f_comp->c_mn );
675 value = fmt->f_comp->c_mn->m_type;
678 value = fmt->f_comp->c_mn->m_ingrp;
681 value = fmt->f_comp->c_mn->m_nohost;
685 if ((mn = fmt->f_comp->c_mn) == &fmt_mnull) {
686 str = fmt->f_comp->c_text;
689 if (fmt->f_type == FT_LS_ADDR)
691 if ((str = mn->m_pers) == NULL) {
692 if ((str = mn->m_note)) {
693 strncpy (buffer, str, sizeof(buffer));
694 buffer[sizeof(buffer)-1] = '\0';
698 sp = str + strlen(str) - 1;
707 } else if (!(str = get_x400_friendly (mn->m_mbox,
708 buffer, sizeof(buffer)))) {
710 switch (mn->m_type) {
715 snprintf (buffer, sizeof(buffer), "%s!%s",
716 mn->m_host, mn->m_mbox);
721 snprintf (buffer, sizeof(buffer), "%s@%s",
722 mn->m_mbox, mn->m_host);
734 /* UNQUOTEs RFC-2822 quoted-string and quoted-pair */
738 strncpy(buffer, str, sizeof(buffer));
739 /* strncpy doesn't NUL-terminate if it fills the buffer */
740 buffer[sizeof(buffer)-1] = '\0';
743 /* we will parse from buffer to buffer2 */
744 n = 0; /* n is the input position in str */
745 m = 0; /* m is the ouput position in buffer2 */
747 while ( str[n] != '\0') {
752 buffer2[m++] = str[n++];
758 buffer2[m++] = str[n++];
769 if ((t = comp->c_tws->tw_clock) == 0)
770 t = dmktime(comp->c_tws);
771 tws = dlocaltime(&t);
777 if ((t = comp->c_tws->tw_clock) == 0)
778 t = dmktime(comp->c_tws);
785 if (comp->c_flags & CF_PARSED)
787 if ((sp = comp->c_text) && (tws = dparsetime(sp))) {
789 comp->c_flags &= ~CF_TRUE;
790 } else if ((comp->c_flags & CF_DATEFAB) == 0) {
791 memset ((char *) comp->c_tws, 0, sizeof *comp->c_tws);
792 comp->c_flags = CF_TRUE;
794 comp->c_flags |= CF_PARSED;
798 /* hook for custom address list formatting (see replsbr.c) */
799 str = formataddr (savestr, str);
803 /* The same as formataddr, but doesn't do duplicate suppression */
804 str = concataddr (savestr, str);
808 /* output the str register as an address component,
809 * splitting it into multiple lines if necessary. The
810 * value reg. contains the max line length. The lit.
811 * field may contain a string to prepend to the result
817 int indent, wid, len;
823 indent = strlen (sp);
826 adios(NULL, "putaddr -- num register (%d) must be greater "
827 "than label width (%d)", value, indent);
829 while( (c = *sp++) && cp < ep)
832 /* try to break at a comma; failing that, break at a
835 lastb = 0; sp = lp + wid;
836 while (sp > lp && (c = *--sp) != ',') {
837 if (! lastb && isspace(c))
841 if (! (sp = lastb)) {
843 while (*sp && *sp != ',' && !isspace(*sp))
850 while (cp < ep && lp <= sp)
857 for (i=indent; cp < ep && i > 0; i--)
861 cpstripped (&cp, ep, lp);
867 if (comp->c_flags & CF_PARSED)
869 if (comp->c_mn != &fmt_mnull)
871 if ((sp = comp->c_text) && (sp = getname(sp)) &&
872 (mn = getm (sp, NULL, 0, fmt_norm, NULL))) {
876 comp->c_flags |= CF_PARSED;
878 while (getname("")) /* XXX */
880 comp->c_mn = &fmt_mnull;
886 * if there's no component, we say true. Otherwise we
887 * say "true" only if we can parse the address and it
888 * matches one of our addresses.
891 if (comp->c_mn != &fmt_mnull)
893 if ((sp = comp->c_text) && (sp = getname(sp)) &&
894 (mn = getm (sp, NULL, 0, AD_NAME, NULL))) {
897 comp->c_flags |= CF_TRUE;
899 comp->c_flags &= ~CF_TRUE;
900 while ((sp = getname(sp)))
901 if ((comp->c_flags & CF_TRUE) == 0 &&
902 (mn = getm (sp, NULL, 0, AD_NAME, NULL)))
904 comp->c_flags |= CF_TRUE;
906 while (getname("")) /* XXX */
908 if (comp->c_text == 0)
909 comp->c_flags |= CF_TRUE;
911 comp->c_flags &= ~CF_TRUE;
912 comp->c_mn = &fmt_mnull;
918 /* If we're working on a folder (as opposed to a file), add the
919 * current msg to sequence given in literal field. Don't
920 * disturb string or value registers.
922 if (fmt_current_folder)
923 seq_addmsg(fmt_current_folder, fmt->f_text, dat[0], -1);
934 return ((struct format *)0);
938 while (fmt->f_type != FT_DONE)
943 return (fmt->f_value ? ++fmt : (struct format *) 0);