2 ** sortm.c -- sort messages in a folder by date/time
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.
13 static struct swit switches[] = {
15 { "datefield field", 0 },
17 { "textfield field", 0 },
21 { "subject", -3 }, /* backward-compatibility */
43 static struct smsg *smsgs;
46 char *subjsort = (char *) 0; /* sort on subject if != 0 */
47 unsigned long datelimit = 0;
48 int submajor = 0; /* if true, sort on subject-major */
51 /* This keeps compiler happy on calls to qsort */
52 typedef int (*qsort_comp) (const void *, const void *);
57 static int read_hdrs (struct msgs *, char *);
58 static int get_fields (char *, int, struct smsg *);
59 static int dsort (struct smsg **, struct smsg **);
60 static int subsort (struct smsg **, struct smsg **);
61 static int txtsort (struct smsg **, struct smsg **);
62 static void rename_chain (struct msgs *, struct smsg **, int, int);
63 static void rename_msgs (struct msgs *, struct smsg **);
67 main (int argc, char **argv)
71 char *maildir, *datesw = NULL;
72 char *folder = NULL, buf[BUFSIZ], **argp;
74 struct msgs_array msgs = { 0, 0, NULL };
79 setlocale(LC_ALL, "");
81 invo_name = r1bindex (argv[0], '/');
83 /* read user profile/context */
86 arguments = getarguments (invo_name, argc, argv, 1);
92 while ((cp = *argp++)) {
94 switch (smatch (++cp, switches)) {
96 ambigsw (cp, switches);
99 adios (NULL, "-%s unknown", cp);
102 snprintf(buf, sizeof(buf), "%s [+folder] [msgs] [switches]", invo_name);
103 print_help (buf, switches, 1);
106 print_version(invo_name);
111 adios (NULL, "only one date field at a time");
112 if (!(datesw = *argp++) || *datesw == '-')
113 adios (NULL, "missing argument to %s",
119 adios (NULL, "only one text field at a time");
120 if (!(subjsort = *argp++) || *subjsort == '-')
121 adios (NULL, "missing argument to %s",
126 subjsort = "subject";
129 subjsort = (char *)0;
133 if (!(cp = *argp++) || *cp == '-')
134 adios (NULL, "missing argument to %s", argp[-2]);
136 cp++; /* skip any leading zeros */
137 if (!*cp) { /* hit end of string */
138 submajor++; /* sort subject-major */
141 if (!isdigit(*cp) || !(datelimit = atoi(cp)))
142 adios (NULL, "impossible limit %s", cp);
143 datelimit *= 60*60*24;
146 submajor = 0; /* use date-major, but */
147 datelimit = 0; /* use no limit */
158 if (*cp == '+' || *cp == '@') {
160 adios (NULL, "only one folder at a time!");
162 folder = pluspath (cp);
164 app_msgarg(&msgs, cp);
167 if (!context_find ("path"))
168 free (path ("./", TFOLDER));
170 app_msgarg(&msgs, "all");
174 folder = getfolder (1);
175 maildir = m_maildir (folder);
177 if (chdir (maildir) == NOTOK)
178 adios (maildir, "unable to change directory to");
180 /* read folder and create message structure */
181 if (!(mp = folder_read (folder)))
182 adios (NULL, "unable to read folder %s", folder);
184 /* check for empty folder */
186 adios (NULL, "no messages in %s", folder);
188 /* parse all the message ranges/sequences and set SELECTED */
189 for (msgnum = 0; msgnum < msgs.size; msgnum++)
190 if (!m_convert (mp, msgs.msgs[msgnum]))
192 seq_setprev (mp); /* set the previous sequence */
194 if ((nmsgs = read_hdrs (mp, datesw)) <= 0)
195 adios (NULL, "no messages to sort");
198 ** sort a list of pointers to our "messages to be sorted".
200 dlist = (struct smsg **) mh_xmalloc ((nmsgs+1) * sizeof(*dlist));
201 for (i = 0; i < nmsgs; i++)
202 dlist[i] = &smsgs[i];
205 if (verbose) { /* announce what we're doing */
207 printf ("sorting by %s-major %s-minor\n",
208 submajor ? subjsort : datesw,
209 submajor ? datesw : subjsort);
211 printf ("sorting by datefield %s\n", datesw);
214 /* first sort by date, or by subject-major, date-minor */
215 qsort ((char *) dlist, nmsgs, sizeof(*dlist),
216 (qsort_comp) (submajor && subjsort ? txtsort : dsort));
219 ** if we're sorting on subject, we need another list
220 ** in subject order, then a merge pass to collate the
223 if (!submajor && subjsort) { /* already date sorted */
224 struct smsg **slist, **flist;
225 register struct smsg ***il, **fp, **dp;
227 slist = (struct smsg **)
228 mh_xmalloc ((nmsgs+1) * sizeof(*slist));
229 memcpy((char *)slist, (char *)dlist, (nmsgs+1)*sizeof(*slist));
230 qsort((char *)slist, nmsgs, sizeof(*slist),
231 (qsort_comp) subsort);
234 ** make an inversion list so we can quickly find
235 ** the collection of messages with the same subj
236 ** given a message number.
238 il = (struct smsg ***) calloc (mp->hghsel+1, sizeof(*il));
240 adios (NULL, "couldn't allocate msg list");
241 for (i = 0; i < nmsgs; i++)
242 il[slist[i]->s_msg] = &slist[i];
244 ** make up the final list, chronological but with
245 ** all the same subjects grouped together.
247 flist = (struct smsg **)
248 mh_xmalloc ((nmsgs+1) * sizeof(*flist));
250 for (dp = dlist; *dp;) {
251 register struct smsg **s = il[(*dp++)->s_msg];
253 /* see if we already did this guy */
259 ** take the next message(s) if there is one,
260 ** its subject isn't null and its subject
261 ** is the same as this one and it's not too
264 while (*s && (*s)->s_subj[0] && strcmp((*s)->s_subj, s[-1]->s_subj) == 0 && (datelimit == 0 || (*s)->s_clock - s[-1]->s_clock <= datelimit)) {
276 ** At this point, dlist is a sorted array of pointers to smsg
277 ** structures, each of which contains a message number.
280 rename_msgs (mp, dlist);
282 context_replace (pfolder, folder); /* update current folder */
283 seq_save (mp); /* synchronize message sequences */
284 context_save (); /* save the context file */
285 folder_free (mp); /* free folder/message structure */
291 read_hdrs (struct msgs *mp, char *datesw)
295 register struct smsg *s;
297 twscopy (&tb, dlocaltimenow ());
299 smsgs = (struct smsg *)
300 calloc ((size_t) (mp->hghsel - mp->lowsel + 2),
303 adios (NULL, "unable to allocate sort storage");
306 for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
307 if (is_selected(mp, msgnum)) {
308 if (get_fields (datesw, msgnum, s)) {
320 ** Parse the message and get the data or subject field,
325 get_fields (char *datesw, int msg, struct smsg *smsg)
329 char *msgnam, buf[BUFSIZ], nam[NAMESZ];
330 register struct tws *tw;
331 register char *datecomp = NULL, *subjcomp = NULL;
334 if ((in = fopen (msgnam = m_name (msg), "r")) == NULL) {
335 admonish (msgnam, "unable to read message");
338 for (compnum = 1, state = FLD;;) {
339 switch (state = m_getfld (state, nam, buf, sizeof(buf), in)) {
344 if (!mh_strcasecmp (nam, datesw)) {
345 datecomp = add (buf, datecomp);
346 while (state == FLDPLUS) {
347 state = m_getfld (state, nam, buf,
349 datecomp = add (buf, datecomp);
351 if (!subjsort || subjcomp)
353 } else if (subjsort && !mh_strcasecmp(nam, subjsort)) {
354 subjcomp = add (buf, subjcomp);
355 while (state == FLDPLUS) {
356 state = m_getfld (state, nam, buf,
358 subjcomp = add (buf, subjcomp);
363 /* just flush this guy */
364 while (state == FLDPLUS)
365 state = m_getfld (state, nam, buf,
377 if (state == LENERR || state == FMTERR)
378 admonish (NULL, "format error in message %d (header #%d)", msg, compnum);
387 adios (NULL, "internal error -- you lose");
393 ** If no date component, then use the modification
394 ** time of the file as its date
396 if (!datecomp || (tw = dparsetime (datecomp)) == NULL) {
399 admonish (NULL, "can't parse %s field in message %d",
401 fstat (fileno (in), &st);
402 smsg->s_clock = st.st_mtime;
404 smsg->s_clock = dmktime (tw);
410 ** try to make the subject "canonical": delete
411 ** leading "re:", everything but letters & smash
412 ** letters to lower case.
414 register char *cp, *cp2;
415 register unsigned char c;
419 if (strcmp (subjsort, "subject") == 0) {
431 while ((c = *cp++)) {
433 *cp2++ = isupper(c) ? tolower(c) : c;
440 smsg->s_subj = subjcomp;
453 dsort (struct smsg **a, struct smsg **b)
455 if ((*a)->s_clock < (*b)->s_clock)
457 else if ((*a)->s_clock > (*b)->s_clock)
459 else if ((*a)->s_msg < (*b)->s_msg)
469 subsort (struct smsg **a, struct smsg **b)
473 if ((i = strcmp ((*a)->s_subj, (*b)->s_subj)))
476 return (dsort (a, b));
480 txtsort (struct smsg **a, struct smsg **b)
484 if ((i = strcmp ((*a)->s_subj, (*b)->s_subj)))
486 else if ((*a)->s_msg < (*b)->s_msg)
493 rename_chain (struct msgs *mp, struct smsg **mlist, int msg, int endmsg)
496 char *newname, oldname[BUFSIZ];
497 char newbuf[MAXPATHLEN + 1];
500 nxt = mlist[msg] - smsgs; /* mlist[msg] is a ptr into smsgs */
501 mlist[msg] = (struct smsg *)0;
502 old = smsgs[nxt].s_msg;
503 new = smsgs[msg].s_msg;
504 strncpy (oldname, m_name (old), sizeof(oldname));
505 newname = m_name (new);
507 printf ("message %d becomes message %d\n", old, new);
509 snprintf(oldname, sizeof (oldname), "%s/%d",
511 snprintf(newbuf, sizeof (newbuf), "%s/%d", mp->foldpath, new);
512 ext_hook("ref-hook", oldname, newbuf);
514 if (rename (oldname, newname) == NOTOK)
515 adios (newname, "unable to rename %s to", oldname);
517 copy_msg_flags (mp, new, old);
518 if (mp->curmsg == old)
519 seq_setcur (mp, new);
526 /* if (nxt != endmsg); */
527 /* rename_chain (mp, mlist, nxt, endmsg); */
531 rename_msgs (struct msgs *mp, struct smsg **mlist)
535 char f1[BUFSIZ], tmpfil[BUFSIZ];
536 char newbuf[MAXPATHLEN + 1];
539 strncpy (tmpfil, m_name (mp->hghmsg + 1), sizeof(tmpfil));
541 for (i = 0; i < nmsgs; i++) {
542 if (! (sp = mlist[i]))
543 continue; /* did this one */
547 continue; /* this one doesn't move */
550 ** the guy that was msg j is about to become msg i.
551 ** rename 'j' to make a hole, then recursively rename
552 ** guys to fill up the hole.
554 old = smsgs[j].s_msg;
555 new = smsgs[i].s_msg;
556 strncpy (f1, m_name (old), sizeof(f1));
559 printf ("renaming message chain from %d to %d\n",
563 ** Run the external hook to refile the old message as the
564 ** temporary message number that is off of the end of the
565 ** messages in the folder.
568 (void)snprintf(f1, sizeof (f1), "%s/%d", mp->foldpath, old);
569 (void)snprintf(newbuf, sizeof (newbuf), "%s/%d",
570 mp->foldpath, mp->hghmsg + 1);
571 ext_hook("ref-hook", f1, newbuf);
573 if (rename (f1, tmpfil) == NOTOK)
574 adios (tmpfil, "unable to rename %s to ", f1);
576 get_msg_flags (mp, &tmpset, old);
578 rename_chain (mp, mlist, j, i);
581 ** Run the external hook to refile the temorary message number
582 ** to the real place.
585 (void)snprintf(f1, sizeof (f1), "%s/%d", mp->foldpath, new);
586 ext_hook("ref-hook", newbuf, f1);
588 if (rename (tmpfil, m_name(new)) == NOTOK)
589 adios (m_name(new), "unable to rename %s to", tmpfil);
591 set_msg_flags (mp, &tmpset, new);
592 mp->msgflags |= SEQMOD;