3 * sortm.c -- sort messages in a folder by date/time
9 #include <zotnet/tws/tws.h>
12 * We allocate space for messages (msgs array)
13 * this number of elements at a time.
18 static struct swit switches[] = {
20 { "datefield field", 0 },
22 { "textfield field", 0 },
26 { "subject", -3 }, /* backward-compatibility */
48 static struct smsg *smsgs;
51 char *subjsort = (char *) 0; /* sort on subject if != 0 */
52 unsigned long datelimit = 0;
53 int submajor = 0; /* if true, sort on subject-major */
56 /* This keeps compiler happy on calls to qsort */
57 typedef int (*qsort_comp) (const void *, const void *);
62 static int read_hdrs (struct msgs *, char *);
63 static int get_fields (char *, int, struct smsg *);
64 static int dsort (struct smsg **, struct smsg **);
65 static int subsort (struct smsg **, struct smsg **);
66 static int txtsort (struct smsg **, struct smsg **);
67 static void rename_chain (struct msgs *, struct smsg **, int, int);
68 static void rename_msgs (struct msgs *, struct smsg **);
72 main (int argc, char **argv)
74 int nummsgs, maxmsgs, i, msgnum;
75 char *cp, *maildir, *datesw = NULL;
76 char *folder = NULL, buf[BUFSIZ], **argp;
77 char **arguments, **msgs;
82 setlocale(LC_ALL, "");
84 invo_name = r1bindex (argv[0], '/');
86 /* read user profile/context */
89 arguments = getarguments (invo_name, argc, argv, 1);
93 * Allocate the initial space to record message
98 if (!(msgs = (char **) malloc ((size_t) (maxmsgs * sizeof(*msgs)))))
99 adios (NULL, "unable to allocate storage");
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 */
169 if (*cp == '+' || *cp == '@') {
171 adios (NULL, "only one folder at a time!");
173 folder = path (cp + 1, *cp == '+' ? TFOLDER : TSUBCWF);
176 * Check if we need to allocate more space
177 * for message names/ranges.
179 if (nummsgs >= maxmsgs) {
181 if (!(msgs = (char **) realloc (msgs,
182 (size_t) (maxmsgs * sizeof(*msgs)))))
183 adios (NULL, "unable to reallocate msgs storage");
185 msgs[nummsgs++] = cp;
189 if (!context_find ("path"))
190 free (path ("./", TFOLDER));
192 msgs[nummsgs++] = "all";
196 folder = getfolder (1);
197 maildir = m_maildir (folder);
199 if (chdir (maildir) == NOTOK)
200 adios (maildir, "unable to change directory to");
202 /* read folder and create message structure */
203 if (!(mp = folder_read (folder)))
204 adios (NULL, "unable to read folder %s", folder);
206 /* check for empty folder */
208 adios (NULL, "no messages in %s", folder);
210 /* parse all the message ranges/sequences and set SELECTED */
211 for (msgnum = 0; msgnum < nummsgs; msgnum++)
212 if (!m_convert (mp, msgs[msgnum]))
214 seq_setprev (mp); /* set the previous sequence */
216 if ((nmsgs = read_hdrs (mp, datesw)) <= 0)
217 adios (NULL, "no messages to sort");
220 * sort a list of pointers to our "messages to be sorted".
222 dlist = (struct smsg **) malloc ((nmsgs+1) * sizeof(*dlist));
224 adios (NULL, "couldn't allocate sort memory");
225 for (i = 0; i < nmsgs; i++)
226 dlist[i] = &smsgs[i];
229 if (verbose) /* announce what we're doing */
231 printf ("sorting by %s-major %s-minor\n",
232 submajor ? subjsort : datesw,
233 submajor ? datesw : subjsort);
235 printf ("sorting by datefield %s\n", datesw);
237 /* first sort by date, or by subject-major, date-minor */
238 qsort ((char *) dlist, nmsgs, sizeof(*dlist),
239 (qsort_comp) (submajor && subjsort ? txtsort : dsort));
242 * if we're sorting on subject, we need another list
243 * in subject order, then a merge pass to collate the
246 if (!submajor && subjsort) { /* already date sorted */
247 struct smsg **slist, **flist;
248 register struct smsg ***il, **fp, **dp;
250 slist = (struct smsg **) malloc ((nmsgs+1) * sizeof(*slist));
252 adios (NULL, "couldn't allocate sort memory");
253 memcpy((char *)slist, (char *)dlist, (nmsgs+1)*sizeof(*slist));
254 qsort((char *)slist, nmsgs, sizeof(*slist), (qsort_comp) subsort);
257 * make an inversion list so we can quickly find
258 * the collection of messages with the same subj
259 * given a message number.
261 il = (struct smsg ***) calloc (mp->hghsel+1, sizeof(*il));
263 adios (NULL, "couldn't allocate msg list");
264 for (i = 0; i < nmsgs; i++)
265 il[slist[i]->s_msg] = &slist[i];
267 * make up the final list, chronological but with
268 * all the same subjects grouped together.
270 flist = (struct smsg **) malloc ((nmsgs+1) * sizeof(*flist));
272 adios (NULL, "couldn't allocate msg list");
274 for (dp = dlist; *dp;) {
275 register struct smsg **s = il[(*dp++)->s_msg];
277 /* see if we already did this guy */
283 * take the next message(s) if there is one,
284 * its subject isn't null and its subject
285 * is the same as this one and it's not too
288 while (*s && (*s)->s_subj[0] &&
289 strcmp((*s)->s_subj, s[-1]->s_subj) == 0 &&
291 (*s)->s_clock - s[-1]->s_clock <= datelimit)) {
301 rename_msgs (mp, dlist);
303 context_replace (pfolder, folder); /* update current folder */
304 seq_save (mp); /* synchronize message sequences */
305 context_save (); /* save the context file */
306 folder_free (mp); /* free folder/message structure */
311 read_hdrs (struct msgs *mp, char *datesw)
315 register struct smsg *s;
317 twscopy (&tb, dlocaltimenow ());
319 smsgs = (struct smsg *)
320 calloc ((size_t) (mp->hghsel - mp->lowsel + 2),
323 adios (NULL, "unable to allocate sort storage");
326 for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
327 if (is_selected(mp, msgnum)) {
328 if (get_fields (datesw, msgnum, s)) {
340 * Parse the message and get the data or subject field,
345 get_fields (char *datesw, int msg, struct smsg *smsg)
349 char *msgnam, buf[BUFSIZ], nam[NAMESZ];
350 register struct tws *tw;
351 register char *datecomp = NULL, *subjcomp = NULL;
354 if ((in = fopen (msgnam = m_name (msg), "r")) == NULL) {
355 admonish (msgnam, "unable to read message");
358 for (compnum = 1, state = FLD;;) {
359 switch (state = m_getfld (state, nam, buf, sizeof(buf), in)) {
364 if (!strcasecmp (nam, datesw)) {
365 datecomp = add (buf, datecomp);
366 while (state == FLDPLUS) {
367 state = m_getfld (state, nam, buf, sizeof(buf), in);
368 datecomp = add (buf, datecomp);
370 if (!subjsort || subjcomp)
372 } else if (subjsort && !strcasecmp (nam, subjsort)) {
373 subjcomp = add (buf, subjcomp);
374 while (state == FLDPLUS) {
375 state = m_getfld (state, nam, buf, sizeof(buf), in);
376 subjcomp = add (buf, subjcomp);
381 /* just flush this guy */
382 while (state == FLDPLUS)
383 state = m_getfld (state, nam, buf, sizeof(buf), in);
394 if (state == LENERR || state == FMTERR)
395 admonish (NULL, "format error in message %d (header #%d)",
405 adios (NULL, "internal error -- you lose");
411 * If no date component, then use the modification
412 * time of the file as its date
414 if (!datecomp || (tw = dparsetime (datecomp)) == NULL) {
417 admonish (NULL, "can't parse %s field in message %d", datesw, msg);
418 fstat (fileno (in), &st);
419 smsg->s_clock = st.st_mtime;
421 smsg->s_clock = dmktime (tw);
427 * try to make the subject "canonical": delete
428 * leading "re:", everything but letters & smash
429 * letters to lower case.
431 register char *cp, *cp2, c;
435 if (strcmp (subjsort, "subject") == 0)
442 *cp2++ = isupper(c) ? tolower(c) : c;
448 while ((c = *cp++)) {
450 *cp2++ = isupper(c) ? tolower(c) : c;
458 smsg->s_subj = subjcomp;
471 dsort (struct smsg **a, struct smsg **b)
473 if ((*a)->s_clock < (*b)->s_clock)
475 else if ((*a)->s_clock > (*b)->s_clock)
477 else if ((*a)->s_msg < (*b)->s_msg)
487 subsort (struct smsg **a, struct smsg **b)
491 if ((i = strcmp ((*a)->s_subj, (*b)->s_subj)))
494 return (dsort (a, b));
498 txtsort (struct smsg **a, struct smsg **b)
502 if ((i = strcmp ((*a)->s_subj, (*b)->s_subj)))
504 else if ((*a)->s_msg < (*b)->s_msg)
511 rename_chain (struct msgs *mp, struct smsg **mlist, int msg, int endmsg)
514 char *newname, oldname[BUFSIZ];
517 nxt = mlist[msg] - smsgs; /* mlist[msg] is a ptr into smsgs */
518 mlist[msg] = (struct smsg *)0;
519 old = smsgs[nxt].s_msg;
520 new = smsgs[msg].s_msg;
521 strncpy (oldname, m_name (old), sizeof(oldname));
522 newname = m_name (new);
524 printf ("message %d becomes message %d\n", old, new);
526 if (rename (oldname, newname) == NOTOK)
527 adios (newname, "unable to rename %s to", oldname);
529 copy_msg_flags (mp, new, old);
530 if (mp->curmsg == old)
531 seq_setcur (mp, new);
538 /* if (nxt != endmsg); */
539 /* rename_chain (mp, mlist, nxt, endmsg); */
543 rename_msgs (struct msgs *mp, struct smsg **mlist)
547 char f1[BUFSIZ], tmpfil[BUFSIZ];
550 strncpy (tmpfil, m_name (mp->hghmsg + 1), sizeof(tmpfil));
552 for (i = 0; i < nmsgs; i++) {
553 if (! (sp = mlist[i]))
554 continue; /* did this one */
558 continue; /* this one doesn't move */
561 * the guy that was msg j is about to become msg i.
562 * rename 'j' to make a hole, then recursively rename
563 * guys to fill up the hole.
565 old = smsgs[j].s_msg;
566 new = smsgs[i].s_msg;
567 strncpy (f1, m_name (old), sizeof(f1));
570 printf ("renaming message chain from %d to %d\n", old, new);
572 if (rename (f1, tmpfil) == NOTOK)
573 adios (tmpfil, "unable to rename %s to ", f1);
574 get_msg_flags (mp, &tmpset, old);
576 rename_chain (mp, mlist, j, i);
577 if (rename (tmpfil, m_name(new)) == NOTOK)
578 adios (m_name(new), "unable to rename %s to", tmpfil);
580 set_msg_flags (mp, &tmpset, new);
581 mp->msgflags |= SEQMOD;