1 /* sortm.c - sort messages in a folder by date/time */
2 /* 21Apr90 do subject sorts too - from V. Jacobson */
4 static char ident[] = "@(#)$Id: sortm.c,v 1.20 1995/12/06 23:46:23 jromine Exp $";
8 #include "../zotnet/tws.h"
12 #include <sys/types.h>
18 #if defined(SYS5) && defined(AUX)
19 #define u_short ushort
24 static struct swit switches[] = {
34 "subject", -3, /* backward-compatibility */
53 unsigned long s_clock;
57 static struct smsg *smsgs;
60 char *subjsort = (char *)0; /* sort on subject if != 0 */
62 int submajor = 0; /* if true, sort on subject-major */
66 static int getws (char *datesw, int msg, struct smsg *smsg);
71 static int dsort(), read_hdrs (), subsort(), txtsort();
72 static void rename_chain(), rename_msgs();
96 setlocale(LC_ALL, "");
98 invo_name = r1bindex (argv[0], '/');
99 if ((cp = m_find (invo_name)) != NULL) {
100 ap = brkstring (cp = getcpy (cp), " ", "\n");
101 ap = copyip (ap, arguments);
105 (void) copyip (argv + 1, ap);
108 while (cp = *argp++) {
110 switch (smatch (++cp, switches)) {
112 ambigsw (cp, switches);
115 adios (NULLCP, "-%s unknown", cp);
117 (void) sprintf(buf, "%s [+folder] [msgs] [switches]",
119 help (buf, switches);
124 adios (NULLCP, "only one date field at a time");
125 if (!(datesw = *argp++) || *datesw == '-')
126 adios (NULLCP, "missing argument to %s", argp[-2]);
131 adios (NULLCP, "only one text field at a time");
132 if (!(subjsort = *argp++) || *subjsort == '-')
133 adios (NULLCP, "missing argument to %s", argp[-2]);
137 subjsort = "subject";
140 subjsort = (char *)0;
144 if (!(cp = *argp++) || *cp == '-')
145 adios (NULLCP, "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 (NULLCP, "impossible limit %s", cp);
154 datelimit *= 60*60*24;
157 submajor = 0; /* use date-major, but */
158 datelimit = 0; /* use no limit */
168 if (*cp == '+' || *cp == '@') {
170 adios (NULLCP, "only one folder at a time!");
172 folder = path (cp + 1, *cp == '+' ? TFOLDER : TSUBCWF);
178 if (!m_find ("path"))
179 free (path ("./", TFOLDER));
181 msgs[msgp++] = "all";
185 folder = m_getfolder ();
186 maildir = m_maildir (folder);
188 if (chdir (maildir) == NOTOK)
189 adios (maildir, "unable to change directory to");
190 if (!(mp = m_gmsg (folder)))
191 adios (NULLCP, "unable to read folder %s", folder);
193 adios (NULLCP, "no messages in %s", folder);
195 for (msgnum = 0; msgnum < msgp; msgnum++)
196 if (!m_convert (mp, msgs[msgnum]))
200 if ((nmsgs = read_hdrs (mp, datesw)) <= 0)
201 adios (NULLCP, "no messages to sort");
204 * sort a list of pointers to our "messages to be sorted".
206 dlist = (struct smsg **) malloc ((nmsgs+1) * sizeof(*dlist));
208 adios (NULLCP, "couldn't allocate sort memory");
209 for (i = 0; i < nmsgs; i++)
210 dlist[i] = &smsgs[i];
213 if (verbose) /* announce what we're doing */
215 printf ("sorting by %s-major %s-minor\n",
216 submajor ? subjsort : datesw,
217 submajor ? datesw : subjsort);
219 printf ("sorting by datefield %s\n", datesw);
221 /* first sort by date, or by subject-major, date-minor */
222 qsort ((char *) dlist, nmsgs, sizeof(*dlist),
223 submajor && subjsort ? txtsort : dsort);
226 * if we're sorting on subject, we need another list
227 * in subject order, then a merge pass to collate the
230 if (!submajor && subjsort) { /* already date sorted */
233 register struct smsg ***il,
237 slist = (struct smsg **) malloc ((nmsgs+1) * sizeof(*slist));
239 adios (NULLCP, "couldn't allocate sort memory");
240 bcopy ((char *)dlist, (char *)slist, (nmsgs+1)*sizeof(*slist));
241 qsort ((char *)slist, nmsgs, sizeof(*slist), subsort);
244 * make an inversion list so we can quickly find
245 * the collection of messages with the same subj
246 * given a message number.
248 il = (struct smsg ***) calloc (mp->hghsel+1, sizeof(*il));
250 adios (NULLCP, "couldn't allocate msg list");
251 for (i = 0; i < nmsgs; i++)
252 il[slist[i]->s_msg] = &slist[i];
254 * make up the final list, chronological but with
255 * all the same subjects grouped together.
257 flist = (struct smsg **) malloc ((nmsgs+1) * sizeof(*flist));
259 adios (NULLCP, "couldn't allocate msg list");
261 for (dp = dlist; *dp;) {
262 register struct smsg **s = il[(*dp++)->s_msg];
264 /* see if we already did this guy */
270 * take the next message(s) if there is one,
271 * its subject isn't null and its subject
272 * is the same as this one and it's not too
275 while (*s && (*s)->s_subj[0] &&
276 strcmp((*s)->s_subj, s[-1]->s_subj) == 0 &&
278 (*s)->s_clock - s[-1]->s_clock <= datelimit)) {
288 rename_msgs (mp, dlist);
290 m_replace (pfolder, folder);
297 read_hdrs (mp, datesw)
298 register struct msgs *mp;
299 register char *datesw;
303 register struct smsg *s;
305 twscopy (&tb, dtwstime ());
307 smsgs = (struct smsg *)
308 calloc ((unsigned) (mp->hghsel - mp->lowsel + 2),
311 adios (NULLCP, "unable to allocate sort storage");
314 for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
315 if (mp->msgstats[msgnum] & SELECTED) {
316 if (getws (datesw, msgnum, s)) {
327 getws (datesw, msg, smsg)
328 register char *datesw;
330 register struct smsg *smsg;
337 register struct tws *tw;
338 register char *datecomp = NULLCP,
342 if ((in = fopen (msgnam = m_name (msg), "r")) == NULL) {
343 admonish (msgnam, "unable to read message");
346 for (compnum = 1, state = FLD;;) {
347 switch (state = m_getfld (state, nam, buf, sizeof buf, in)) {
352 if (uleq (nam, datesw)) {
353 datecomp = add (buf, datecomp);
354 while (state == FLDPLUS) {
355 state = m_getfld (state, nam, buf, sizeof buf, in);
356 datecomp = add (buf, datecomp);
358 if (!subjsort || subjcomp)
361 else if (subjsort && uleq (nam, subjsort)) {
362 subjcomp = add (buf, subjcomp);
363 while (state == FLDPLUS) {
364 state = m_getfld (state, nam, buf, sizeof buf, in);
365 subjcomp = add (buf, subjcomp);
371 /* just flush this guy */
372 while (state == FLDPLUS)
373 state = m_getfld (state, nam, buf, sizeof buf, in);
384 if (state == LENERR || state == FMTERR)
385 admonish (NULLCP, "format error in message %d (header #%d)",
395 adios (NULLCP, "internal error -- you lose");
400 if (!datecomp || (tw = dparsetime (datecomp)) == NULL) {
403 admonish (NULLCP, "can't parse %s field in message %d",
406 /* use the modify time of the file as its date */
407 (void) fstat (fileno (in), &st);
408 smsg->s_clock = st.st_mtime;
411 smsg->s_clock = twclock (tw);
416 * try to make the subject "canonical": delete
417 * leading "re:", everything but letters & smash
418 * letters to lower case.
426 if (strcmp (subjsort, "subject") == 0)
433 *cp2++ = isupper(c) ? tolower(c) : c;
441 *cp2++ = isupper(c) ? tolower(c) : c;
449 smsg->s_subj = subjcomp;
463 register struct smsg **a,
466 if ((*a)->s_clock < (*b)->s_clock)
468 else if ((*a)->s_clock > (*b)->s_clock)
470 else if ((*a)->s_msg < (*b)->s_msg)
481 register struct smsg **a,
486 if (i = strcmp ((*a)->s_subj, (*b)->s_subj))
489 return (dsort (a, b));
494 register struct smsg **a,
499 if (i = strcmp ((*a)->s_subj, (*b)->s_subj))
501 else if ((*a)->s_msg < (*b)->s_msg)
507 static void rename_chain (mp, mlist, msg, endmsg)
508 register struct msgs *mp;
520 nxt = mlist[msg] - smsgs; /* mlist[msg] is a ptr into smsgs */
521 mlist[msg] = (struct smsg *)0;
522 old = smsgs[nxt].s_msg;
523 new = smsgs[msg].s_msg;
524 (void) strcpy (oldname, m_name (old));
525 newname = m_name (new);
527 printf ("message %d becomes message %d\n", old, new);
529 if (rename (oldname, newname) == NOTOK)
530 adios (newname, "unable to rename %s to", oldname);
532 mp->msgstats[new] = mp->msgstats[old];
533 if (mp->curmsg == old)
541 /* if (nxt != endmsg); */
542 /* rename_chain (mp, mlist, nxt, endmsg); */
546 rename_msgs (mp, mlist)
547 register struct msgs *mp;
548 register struct smsg **mlist;
557 register struct smsg *sp;
559 (void) strcpy (tmpfil, m_name (mp->hghmsg + 1));
561 for (i = 0; i < nmsgs; i++) {
562 if (! (sp = mlist[i]))
563 continue; /* did this one */
567 continue; /* this one doesn't move */
570 * the guy that was msg j is about to become msg i.
571 * rename 'j' to make a hole, then recursively rename
572 * guys to fill up the hole.
574 old = smsgs[j].s_msg;
575 new = smsgs[i].s_msg;
576 (void) strcpy (f1, m_name (old));
579 printf ("renaming message chain from %d to %d\n", old, new);
581 if (rename (f1, tmpfil) == NOTOK)
582 adios (tmpfil, "unable to rename %s to ", f1);
583 stats = mp->msgstats[old];
585 rename_chain (mp, mlist, j, i);
586 if (rename (tmpfil, m_name(new)) == NOTOK)
587 adios (m_name(new), "unable to rename %s to", tmpfil);
589 mp->msgstats[new] = stats;
590 mp->msgflags |= SEQMOD;