3 * sortm.c -- sort messages in a folder by date/time
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.
14 static struct swit switches[] = {
16 { "datefield field", 0 },
18 { "textfield field", 0 },
22 { "subject", -3 }, /* backward-compatibility */
52 static struct smsg *smsgs;
55 char *subjsort = (char *) 0; /* sort on subject if != 0 */
57 int submajor = 0; /* if true, sort on subject-major */
62 /* This keeps compiler happy on calls to qsort */
63 typedef int (*qsort_comp) (const void *, const void *);
68 static int read_hdrs (struct msgs *, char *);
69 static int get_fields (char *, int, struct smsg *);
70 static int dsort (struct smsg **, struct smsg **);
71 static int subsort (struct smsg **, struct smsg **);
72 static int txtsort (struct smsg **, struct smsg **);
73 static void rename_chain (struct msgs *, struct smsg **, int, int);
74 static void rename_msgs (struct msgs *, struct smsg **);
78 main (int argc, char **argv)
82 char *maildir, *datesw = NULL;
83 char *folder = NULL, buf[BUFSIZ], **argp;
85 struct msgs_array msgs = { 0, 0, NULL };
91 setlocale(LC_ALL, "");
93 invo_name = r1bindex (argv[0], '/');
95 /* read user profile/context */
98 arguments = getarguments (invo_name, argc, argv, 1);
104 while ((cp = *argp++)) {
106 switch (smatch (++cp, switches)) {
108 ambigsw (cp, switches);
111 adios (NULL, "-%s unknown", cp);
114 snprintf(buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
116 print_help (buf, switches, 1);
119 print_version(invo_name);
124 adios (NULL, "only one date field at a time");
125 if (!(datesw = *argp++) || *datesw == '-')
126 adios (NULL, "missing argument to %s", argp[-2]);
131 adios (NULL, "only one text field at a time");
132 if (!(subjsort = *argp++) || *subjsort == '-')
133 adios (NULL, "missing argument to %s", argp[-2]);
137 subjsort = "subject";
140 subjsort = (char *)0;
144 if (!(cp = *argp++) || *cp == '-')
145 adios (NULL, "missing argument to %s", argp[-2]);
147 cp++; /* skip any leading zeros */
148 if (!*cp) { /* hit end of string */
149 submajor++; /* sort subject-major */
152 if (!isdigit(*cp) || !(datelimit = atoi(cp)))
153 adios (NULL, "impossible limit %s", cp);
154 datelimit *= 60*60*24;
157 submajor = 0; /* use date-major, but */
158 datelimit = 0; /* use no limit */
183 if (*cp == '+' || *cp == '@') {
185 adios (NULL, "only one folder at a time!");
187 folder = pluspath (cp);
189 app_msgarg(&msgs, cp);
192 if (!context_find ("path"))
193 free (path ("./", TFOLDER));
196 app_msgarg(&msgs, "all");
198 adios (NULL, "must specify messages to sort with -noall");
204 folder = getfolder (1);
205 maildir = m_maildir (folder);
207 if (chdir (maildir) == NOTOK)
208 adios (maildir, "unable to change directory to");
210 /* read folder and create message structure */
211 if (!(mp = folder_read (folder)))
212 adios (NULL, "unable to read folder %s", folder);
214 /* check for empty folder */
216 adios (NULL, "no messages in %s", folder);
218 /* parse all the message ranges/sequences and set SELECTED */
219 for (msgnum = 0; msgnum < msgs.size; msgnum++)
220 if (!m_convert (mp, msgs.msgs[msgnum]))
222 seq_setprev (mp); /* set the previous sequence */
224 if ((nmsgs = read_hdrs (mp, datesw)) <= 0)
225 adios (NULL, "no messages to sort");
227 if (checksw && check_failed) {
228 adios (NULL, "errors found, no messages sorted");
232 * sort a list of pointers to our "messages to be sorted".
234 dlist = (struct smsg **) mh_xmalloc ((nmsgs+1) * sizeof(*dlist));
235 for (i = 0; i < nmsgs; i++)
236 dlist[i] = &smsgs[i];
239 if (verbose) { /* announce what we're doing */
242 printf ("sorting by %s\n", subjsort);
244 printf ("sorting by %s-major %s-minor\n", subjsort, datesw);
246 printf ("sorting by datefield %s\n", datesw);
249 /* first sort by date, or by subject-major, date-minor */
250 qsort ((char *) dlist, nmsgs, sizeof(*dlist),
251 (qsort_comp) (submajor && subjsort ? txtsort : dsort));
254 * if we're sorting on subject, we need another list
255 * in subject order, then a merge pass to collate the
258 if (!submajor && subjsort) { /* already date sorted */
259 struct smsg **slist, **flist;
260 register struct smsg ***il, **fp, **dp;
262 slist = (struct smsg **) mh_xmalloc ((nmsgs+1) * sizeof(*slist));
263 memcpy((char *)slist, (char *)dlist, (nmsgs+1)*sizeof(*slist));
264 qsort((char *)slist, nmsgs, sizeof(*slist), (qsort_comp) subsort);
267 * make an inversion list so we can quickly find
268 * the collection of messages with the same subj
269 * given a message number.
271 il = (struct smsg ***) calloc (mp->hghsel+1, sizeof(*il));
273 adios (NULL, "couldn't allocate msg list");
274 for (i = 0; i < nmsgs; i++)
275 il[slist[i]->s_msg] = &slist[i];
277 * make up the final list, chronological but with
278 * all the same subjects grouped together.
280 flist = (struct smsg **) mh_xmalloc ((nmsgs+1) * sizeof(*flist));
282 for (dp = dlist; *dp;) {
283 register struct smsg **s = il[(*dp++)->s_msg];
285 /* see if we already did this guy */
291 * take the next message(s) if there is one,
292 * its subject isn't null and its subject
293 * is the same as this one and it's not too
296 while (*s && (*s)->s_subj[0] &&
297 strcmp((*s)->s_subj, s[-1]->s_subj) == 0 &&
299 (*s)->s_clock - s[-1]->s_clock <= datelimit)) {
311 * At this point, dlist is a sorted array of pointers to smsg structures,
312 * each of which contains a message number.
315 rename_msgs (mp, dlist);
317 context_replace (pfolder, folder); /* update current folder */
318 seq_save (mp); /* synchronize message sequences */
319 context_save (); /* save the context file */
320 folder_free (mp); /* free folder/message structure */
326 read_hdrs (struct msgs *mp, char *datesw)
330 register struct smsg *s;
332 twscopy (&tb, dlocaltimenow ());
334 smsgs = (struct smsg *)
335 calloc ((size_t) (mp->hghsel - mp->lowsel + 2),
338 adios (NULL, "unable to allocate sort storage");
341 for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
342 if (is_selected(mp, msgnum)) {
343 if (get_fields (datesw, msgnum, s)) {
355 * Parse the message and get the data or subject field,
360 get_fields (char *datesw, int msg, struct smsg *smsg)
364 char *msgnam, buf[BUFSIZ], nam[NAMESZ];
365 register struct tws *tw;
366 register char *datecomp = NULL, *subjcomp = NULL;
369 if ((in = fopen (msgnam = m_name (msg), "r")) == NULL) {
370 admonish (msgnam, "unable to read message");
373 for (compnum = 1, state = FLD;;) {
374 switch (state = m_getfld (state, nam, buf, sizeof(buf), in)) {
379 if (!mh_strcasecmp (nam, datesw)) {
380 datecomp = add (buf, datecomp);
381 while (state == FLDPLUS) {
382 state = m_getfld (state, nam, buf, sizeof(buf), in);
383 datecomp = add (buf, datecomp);
385 if (!subjsort || subjcomp)
387 } else if (subjsort && !mh_strcasecmp (nam, subjsort)) {
388 subjcomp = add (buf, subjcomp);
389 while (state == FLDPLUS) {
390 state = m_getfld (state, nam, buf, sizeof(buf), in);
391 subjcomp = add (buf, subjcomp);
396 /* just flush this guy */
397 while (state == FLDPLUS)
398 state = m_getfld (state, nam, buf, sizeof(buf), in);
409 if (state == LENERR || state == FMTERR) {
410 admonish (NULL, "format error in message %d (header #%d)",
422 adios (NULL, "internal error -- you lose");
428 * If no date component, then use the modification
429 * time of the file as its date
431 if (!datecomp || (tw = dparsetime (datecomp)) == NULL) {
434 admonish (NULL, "can't parse %s field in message %d", datesw, msg);
435 fstat (fileno (in), &st);
436 smsg->s_clock = st.st_mtime;
439 smsg->s_clock = dmktime (tw);
445 * try to make the subject "canonical": delete
446 * leading "re:", everything but letters & smash
447 * letters to lower case.
449 register char *cp, *cp2;
450 register unsigned char c;
454 if (strcmp (subjsort, "subject") == 0) {
466 while ((c = *cp++)) {
468 *cp2++ = isupper(c) ? tolower(c) : c;
476 smsg->s_subj = subjcomp;
489 dsort (struct smsg **a, struct smsg **b)
491 if ((*a)->s_clock < (*b)->s_clock)
493 else if ((*a)->s_clock > (*b)->s_clock)
495 else if ((*a)->s_msg < (*b)->s_msg)
505 subsort (struct smsg **a, struct smsg **b)
509 if ((i = strcmp ((*a)->s_subj, (*b)->s_subj)))
512 return (dsort (a, b));
516 txtsort (struct smsg **a, struct smsg **b)
520 if ((i = strcmp ((*a)->s_subj, (*b)->s_subj)))
522 else if ((*a)->s_msg < (*b)->s_msg)
529 rename_chain (struct msgs *mp, struct smsg **mlist, int msg, int endmsg)
532 char *newname, oldname[BUFSIZ];
533 char newbuf[PATH_MAX + 1];
536 nxt = mlist[msg] - smsgs; /* mlist[msg] is a ptr into smsgs */
537 mlist[msg] = (struct smsg *)0;
538 old = smsgs[nxt].s_msg;
539 new = smsgs[msg].s_msg;
540 strncpy (oldname, m_name (old), sizeof(oldname));
541 newname = m_name (new);
543 printf ("message %d becomes message %d\n", old, new);
545 (void)snprintf(oldname, sizeof (oldname), "%s/%d", mp->foldpath, old);
546 (void)snprintf(newbuf, sizeof (newbuf), "%s/%d", mp->foldpath, new);
547 ext_hook("ref-hook", oldname, newbuf);
549 if (rename (oldname, newname) == NOTOK)
550 adios (newname, "unable to rename %s to", oldname);
552 copy_msg_flags (mp, new, old);
553 if (mp->curmsg == old)
554 seq_setcur (mp, new);
561 /* if (nxt != endmsg); */
562 /* rename_chain (mp, mlist, nxt, endmsg); */
566 rename_msgs (struct msgs *mp, struct smsg **mlist)
570 char f1[BUFSIZ], tmpfil[BUFSIZ];
571 char newbuf[PATH_MAX + 1];
574 strncpy (tmpfil, m_name (mp->hghmsg + 1), sizeof(tmpfil));
576 for (i = 0; i < nmsgs; i++) {
577 if (! (sp = mlist[i]))
578 continue; /* did this one */
582 continue; /* this one doesn't move */
585 * the guy that was msg j is about to become msg i.
586 * rename 'j' to make a hole, then recursively rename
587 * guys to fill up the hole.
589 old = smsgs[j].s_msg;
590 new = smsgs[i].s_msg;
591 strncpy (f1, m_name (old), sizeof(f1));
594 printf ("renaming message chain from %d to %d\n", old, new);
597 * Run the external hook to refile the old message as the
598 * temporary message number that is off of the end of the
599 * messages in the folder.
602 (void)snprintf(f1, sizeof (f1), "%s/%d", mp->foldpath, old);
603 (void)snprintf(newbuf, sizeof (newbuf), "%s/%d", mp->foldpath, mp->hghmsg + 1);
604 ext_hook("ref-hook", f1, newbuf);
606 if (rename (f1, tmpfil) == NOTOK)
607 adios (tmpfil, "unable to rename %s to ", f1);
609 get_msg_flags (mp, &tmpset, old);
611 rename_chain (mp, mlist, j, i);
614 * Run the external hook to refile the temorary message number
618 (void)snprintf(f1, sizeof (f1), "%s/%d", mp->foldpath, new);
619 ext_hook("ref-hook", newbuf, f1);
621 if (rename (tmpfil, m_name(new)) == NOTOK)
622 adios (m_name(new), "unable to rename %s to", tmpfil);
624 set_msg_flags (mp, &tmpset, new);
625 mp->msgflags |= SEQMOD;