1 /* folder_pack.c -- pack (renumber) the messages in a folder
2 * -- into a contiguous range from 1 to n.
3 *
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.
7 */
8
9 #include <h/mh.h>
10
11 /*
12 * Pack the message in a folder.
13 * Return -1 if error, else return 0.
14 */
15
16 int
folder_pack(struct msgs ** mpp,int verbose)17 folder_pack (struct msgs **mpp, int verbose)
18 {
19 int hole, msgnum, newcurrent = 0;
20 char newmsg[BUFSIZ], oldmsg[BUFSIZ];
21 struct msgs *mp;
22
23 mp = *mpp;
24
25 /*
26 * Just return if folder is empty.
27 */
28 if (mp->nummsg == 0)
29 return 0;
30
31 /*
32 * Make sure we have message status space allocated
33 * for all numbers from 1 to current high message.
34 */
35 if (mp->lowoff > 1) {
36 if ((mp = folder_realloc (mp, 1, mp->hghmsg)))
37 *mpp = mp;
38 else {
39 inform("unable to allocate folder storage");
40 return -1;
41 }
42 }
43
44 for (msgnum = mp->lowmsg, hole = 1; msgnum <= mp->hghmsg; msgnum++) {
45 if (does_exist (mp, msgnum)) {
46 if (msgnum != hole) {
47 strncpy (newmsg, m_name (hole), sizeof(newmsg));
48 strncpy (oldmsg, m_name (msgnum), sizeof(oldmsg));
49 if (verbose)
50 printf ("message %s becomes %s\n", oldmsg, newmsg);
51
52 /*
53 * Invoke the external refile hook for each message being renamed.
54 * This is done before the file is renamed so that the old message
55 * file is around for the hook.
56 */
57
58 (void)snprintf(oldmsg, sizeof (oldmsg), "%s/%d", mp->foldpath, msgnum);
59 (void)snprintf(newmsg, sizeof (newmsg), "%s/%d", mp->foldpath, hole);
60 ext_hook("ref-hook", oldmsg, newmsg);
61
62 /* move the message file */
63 if (rename (oldmsg, newmsg) == -1) {
64 advise (newmsg, "unable to rename %s to", oldmsg);
65 return -1;
66 }
67
68 /* check if this is the current message */
69 if (msgnum == mp->curmsg)
70 newcurrent = hole;
71
72 /* copy the attribute flags for this message */
73 copy_msg_flags (mp, hole, msgnum);
74
75 if (msgnum == mp->lowsel)
76 mp->lowsel = hole;
77 if (msgnum == mp->hghsel)
78 mp->hghsel = hole;
79
80 /* mark that sequence information has been modified */
81 mp->msgflags |= SEQMOD;
82 }
83 hole++;
84 }
85 }
86
87 /* record the new number for the high/low message */
88 mp->lowmsg = 1;
89 mp->hghmsg = hole - 1;
90
91 /* update the "cur" sequence */
92 if (newcurrent != 0)
93 seq_setcur (mp, newcurrent);
94
95 return 0;
96 }
97