2 ** seq_save.c -- 1) synchronize sequences
3 ** -- 2) save public sequences
5 ** This code is Copyright (c) 2002, by the authors of nmh. See the
6 ** COPYRIGHT file in the root directory of the nmh distribution for
7 ** complete copyright information.
11 #include <h/signals.h>
16 ** 1. If sequence is public and folder is readonly,
17 ** then change it to be private
18 ** 2a. If sequence is public, then add it to the sequences file
19 ** in folder (name specified by mh-sequences profile entry).
20 ** 2b. If sequence is private, then add it to the
25 seq_save(struct msgs *mp)
28 char flags, *cp, attr[BUFSIZ], seqfile[PATH_MAX];
32 /* check if sequence information has changed */
33 if (!(mp->msgflags & SEQMOD))
35 mp->msgflags &= ~SEQMOD;
38 flags = mp->msgflags; /* record folder flags */
41 ** If no mh-sequences file is defined, or if a mh-sequences file
42 ** is defined but empty (*mh_seq == '\0'), then pretend folder
43 ** is readonly. This will force all sequences to be private.
45 if (mh_seq == NULL || *mh_seq == '\0')
48 snprintf(seqfile, sizeof(seqfile), "%s/%s", mp->foldpath,
51 for (i = 0; mp->msgattrs[i]; i++) {
52 snprintf(attr, sizeof(attr), "atr-%s-%s", mp->msgattrs[i],
55 /* get space separated list of sequence ranges */
56 if (!(cp = seq_list(mp, mp->msgattrs[i]))) {
57 context_del(attr); /* delete sequence from context */
61 if (is_readonly(mp) || is_seq_private(mp, i)) {
63 /* sequence is private */
64 context_replace(attr, cp); /* update seq in ctx */
66 /* sequence is public */
67 context_del(attr); /* delete sequence from context */
71 ** Attempt to open file for public sequences.
72 ** If that fails (probably because folder is
73 ** readonly), then make sequence private.
75 if ((fp = lkfopen(seqfile, "w")) == NULL
76 && (unlink(seqfile) == -1 ||
77 (fp = lkfopen(seqfile, "w"))
79 admonish(attr, "unable to write");
83 /* block a few signals */
85 sigaddset(&set, SIGHUP);
86 sigaddset(&set, SIGINT);
87 sigaddset(&set, SIGQUIT);
88 sigaddset(&set, SIGTERM);
89 sigprocmask(SIG_BLOCK, &set, &oset);
91 fprintf(fp, "%s: %s\n", mp->msgattrs[i], cp);
96 lkfclose(fp, seqfile);
97 sigprocmask(SIG_SETMASK, &oset, &set); /* reset signal mask */
100 ** If folder is not readonly, and we didn't save any
101 ** public sequences, then remove that file.
103 if (!is_readonly(mp))
108 ** Reset folder flag, since we may be
109 ** pretending that folder is readonly.
111 mp->msgflags = flags;