3 * sortm.c -- sort messages in a folder by date/time
7 * This code is Copyright (c) 2002, by the authors of nmh. See the
8 * COPYRIGHT file in the root directory of the nmh distribution for
9 * complete copyright information.
16 static struct swit switches[] = {
18 { "datefield field", 0 },
20 { "textfield field", 0 },
24 { "subject", -3 }, /* backward-compatibility */
46 static struct smsg *smsgs;
49 char *subjsort = (char *) 0; /* sort on subject if != 0 */
50 unsigned long datelimit = 0;
51 int submajor = 0; /* if true, sort on subject-major */
54 /* This keeps compiler happy on calls to qsort */
55 typedef int (*qsort_comp) (const void *, const void *);
60 static int read_hdrs (struct msgs *, char *);
61 static int get_fields (char *, int, struct smsg *);
62 static int dsort (struct smsg **, struct smsg **);
63 static int subsort (struct smsg **, struct smsg **);
64 static int txtsort (struct smsg **, struct smsg **);
65 static void rename_chain (struct msgs *, struct smsg **, int, int);
66 static void rename_msgs (struct msgs *, struct smsg **);
70 main (int argc, char **argv)
73 char *cp, *maildir, *datesw = NULL;
74 char *folder = NULL, buf[BUFSIZ], **argp;
76 struct msgs_array msgs = { 0, 0, NULL };
81 setlocale(LC_ALL, "");
83 invo_name = r1bindex (argv[0], '/');
85 /* read user profile/context */
88 arguments = getarguments (invo_name, argc, argv, 1);
94 while ((cp = *argp++)) {
96 switch (smatch (++cp, switches)) {
98 ambigsw (cp, switches);
101 adios (NULL, "-%s unknown", cp);
104 snprintf(buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
106 print_help (buf, switches, 1);
109 print_version(invo_name);
114 adios (NULL, "only one date field at a time");
115 if (!(datesw = *argp++) || *datesw == '-')
116 adios (NULL, "missing argument to %s", argp[-2]);
121 adios (NULL, "only one text field at a time");
122 if (!(subjsort = *argp++) || *subjsort == '-')
123 adios (NULL, "missing argument to %s", argp[-2]);
127 subjsort = "subject";
130 subjsort = (char *)0;
134 if (!(cp = *argp++) || *cp == '-')
135 adios (NULL, "missing argument to %s", argp[-2]);
137 cp++; /* skip any leading zeros */
138 if (!*cp) { /* hit end of string */
139 submajor++; /* sort subject-major */
142 if (!isdigit(*cp) || !(datelimit = atoi(cp)))
143 adios (NULL, "impossible limit %s", cp);
144 datelimit *= 60*60*24;
147 submajor = 0; /* use date-major, but */
148 datelimit = 0; /* use no limit */
159 if (*cp == '+' || *cp == '@') {
161 adios (NULL, "only one folder at a time!");
163 folder = pluspath (cp);
165 app_msgarg(&msgs, cp);
168 if (!context_find ("path"))
169 free (path ("./", TFOLDER));
171 app_msgarg(&msgs, "all");
175 folder = getfolder (1);
176 maildir = m_maildir (folder);
178 if (chdir (maildir) == NOTOK)
179 adios (maildir, "unable to change directory to");
181 /* read folder and create message structure */
182 if (!(mp = folder_read (folder)))
183 adios (NULL, "unable to read folder %s", folder);
185 /* check for empty folder */
187 adios (NULL, "no messages in %s", folder);
189 /* parse all the message ranges/sequences and set SELECTED */
190 for (msgnum = 0; msgnum < msgs.size; msgnum++)
191 if (!m_convert (mp, msgs.msgs[msgnum]))
193 seq_setprev (mp); /* set the previous sequence */
195 if ((nmsgs = read_hdrs (mp, datesw)) <= 0)
196 adios (NULL, "no messages to sort");
199 * sort a list of pointers to our "messages to be sorted".
201 dlist = (struct smsg **) mh_xmalloc ((nmsgs+1) * sizeof(*dlist));
202 for (i = 0; i < nmsgs; i++)
203 dlist[i] = &smsgs[i];
206 if (verbose) { /* announce what we're doing */
208 printf ("sorting by %s-major %s-minor\n",
209 submajor ? subjsort : datesw,
210 submajor ? datesw : subjsort);
212 printf ("sorting by datefield %s\n", datesw);
215 /* first sort by date, or by subject-major, date-minor */
216 qsort ((char *) dlist, nmsgs, sizeof(*dlist),
217 (qsort_comp) (submajor && subjsort ? txtsort : dsort));
220 * if we're sorting on subject, we need another list
221 * in subject order, then a merge pass to collate the
224 if (!submajor && subjsort) { /* already date sorted */
225 struct smsg **slist, **flist;
226 register struct smsg ***il, **fp, **dp;
228 slist = (struct smsg **) mh_xmalloc ((nmsgs+1) * sizeof(*slist));
229 memcpy((char *)slist, (char *)dlist, (nmsgs+1)*sizeof(*slist));
230 qsort((char *)slist, nmsgs, sizeof(*slist), (qsort_comp) subsort);
233 * make an inversion list so we can quickly find
234 * the collection of messages with the same subj
235 * given a message number.
237 il = (struct smsg ***) calloc (mp->hghsel+1, sizeof(*il));
239 adios (NULL, "couldn't allocate msg list");
240 for (i = 0; i < nmsgs; i++)
241 il[slist[i]->s_msg] = &slist[i];
243 * make up the final list, chronological but with
244 * all the same subjects grouped together.
246 flist = (struct smsg **) mh_xmalloc ((nmsgs+1) * sizeof(*flist));
248 for (dp = dlist; *dp;) {
249 register struct smsg **s = il[(*dp++)->s_msg];
251 /* see if we already did this guy */
257 * take the next message(s) if there is one,
258 * its subject isn't null and its subject
259 * is the same as this one and it's not too
262 while (*s && (*s)->s_subj[0] &&
263 strcmp((*s)->s_subj, s[-1]->s_subj) == 0 &&
265 (*s)->s_clock - s[-1]->s_clock <= datelimit)) {
277 * At this point, dlist is a sorted array of pointers to smsg structures,
278 * each of which contains a message number.
281 rename_msgs (mp, dlist);
283 context_replace (pfolder, folder); /* update current folder */
284 seq_save (mp); /* synchronize message sequences */
285 context_save (); /* save the context file */
286 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, sizeof(buf), in);
348 datecomp = add (buf, datecomp);
350 if (!subjsort || subjcomp)
352 } else if (subjsort && !mh_strcasecmp (nam, subjsort)) {
353 subjcomp = add (buf, subjcomp);
354 while (state == FLDPLUS) {
355 state = m_getfld (state, nam, buf, sizeof(buf), in);
356 subjcomp = add (buf, subjcomp);
361 /* just flush this guy */
362 while (state == FLDPLUS)
363 state = m_getfld (state, nam, buf, sizeof(buf), in);
374 if (state == LENERR || state == FMTERR)
375 admonish (NULL, "format error in message %d (header #%d)",
385 adios (NULL, "internal error -- you lose");
391 * If no date component, then use the modification
392 * time of the file as its date
394 if (!datecomp || (tw = dparsetime (datecomp)) == NULL) {
397 admonish (NULL, "can't parse %s field in message %d", datesw, msg);
398 fstat (fileno (in), &st);
399 smsg->s_clock = st.st_mtime;
401 smsg->s_clock = dmktime (tw);
407 * try to make the subject "canonical": delete
408 * leading "re:", everything but letters & smash
409 * letters to lower case.
411 register char *cp, *cp2, c;
415 if (strcmp (subjsort, "subject") == 0) {
427 while ((c = *cp++)) {
429 *cp2++ = isupper(c) ? tolower(c) : c;
437 smsg->s_subj = subjcomp;
450 dsort (struct smsg **a, struct smsg **b)
452 if ((*a)->s_clock < (*b)->s_clock)
454 else if ((*a)->s_clock > (*b)->s_clock)
456 else if ((*a)->s_msg < (*b)->s_msg)
466 subsort (struct smsg **a, struct smsg **b)
470 if ((i = strcmp ((*a)->s_subj, (*b)->s_subj)))
473 return (dsort (a, b));
477 txtsort (struct smsg **a, struct smsg **b)
481 if ((i = strcmp ((*a)->s_subj, (*b)->s_subj)))
483 else if ((*a)->s_msg < (*b)->s_msg)
490 rename_chain (struct msgs *mp, struct smsg **mlist, int msg, int endmsg)
493 char *newname, oldname[BUFSIZ];
494 char newbuf[MAXPATHLEN + 1];
497 nxt = mlist[msg] - smsgs; /* mlist[msg] is a ptr into smsgs */
498 mlist[msg] = (struct smsg *)0;
499 old = smsgs[nxt].s_msg;
500 new = smsgs[msg].s_msg;
501 strncpy (oldname, m_name (old), sizeof(oldname));
502 newname = m_name (new);
504 printf ("message %d becomes message %d\n", old, new);
506 (void)snprintf(oldname, sizeof (oldname), "%s/%d", mp->foldpath, old);
507 (void)snprintf(newbuf, sizeof (newbuf), "%s/%d", mp->foldpath, new);
508 ext_hook("ref-hook", oldname, newbuf);
510 if (rename (oldname, newname) == NOTOK)
511 adios (newname, "unable to rename %s to", oldname);
513 copy_msg_flags (mp, new, old);
514 if (mp->curmsg == old)
515 seq_setcur (mp, new);
522 /* if (nxt != endmsg); */
523 /* rename_chain (mp, mlist, nxt, endmsg); */
527 rename_msgs (struct msgs *mp, struct smsg **mlist)
531 char f1[BUFSIZ], tmpfil[BUFSIZ];
532 char newbuf[MAXPATHLEN + 1];
535 strncpy (tmpfil, m_name (mp->hghmsg + 1), sizeof(tmpfil));
537 for (i = 0; i < nmsgs; i++) {
538 if (! (sp = mlist[i]))
539 continue; /* did this one */
543 continue; /* this one doesn't move */
546 * the guy that was msg j is about to become msg i.
547 * rename 'j' to make a hole, then recursively rename
548 * guys to fill up the hole.
550 old = smsgs[j].s_msg;
551 new = smsgs[i].s_msg;
552 strncpy (f1, m_name (old), sizeof(f1));
555 printf ("renaming message chain from %d to %d\n", old, new);
558 * Run the external hook to refile the old message as the
559 * temporary message number that is off of the end of the
560 * messages in the folder.
563 (void)snprintf(f1, sizeof (f1), "%s/%d", mp->foldpath, old);
564 (void)snprintf(newbuf, sizeof (newbuf), "%s/%d", mp->foldpath, mp->hghmsg + 1);
565 ext_hook("ref-hook", f1, newbuf);
567 if (rename (f1, tmpfil) == NOTOK)
568 adios (tmpfil, "unable to rename %s to ", f1);
570 get_msg_flags (mp, &tmpset, old);
572 rename_chain (mp, mlist, j, i);
575 * Run the external hook to refile the temorary message number
579 (void)snprintf(f1, sizeof (f1), "%s/%d", mp->foldpath, new);
580 ext_hook("ref-hook", newbuf, f1);
582 if (rename (tmpfil, m_name(new)) == NOTOK)
583 adios (m_name(new), "unable to rename %s to", tmpfil);
585 set_msg_flags (mp, &tmpset, new);
586 mp->msgflags |= SEQMOD;