2 * seq_read.c -- read the .mh_sequence file and
3 * -- initialize sequence information
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.
16 static int seq_init (struct msgs *, char *, char *);
17 static void seq_public (struct msgs *);
18 static void seq_private (struct msgs *);
22 * Get the sequence information for this folder from
23 * .mh_sequences (or equivalent specified in .mh_profile)
24 * or context file (for private sequences).
28 seq_read (struct msgs *mp)
31 * Initialize the list of sequence names. Go ahead and
32 * add the "cur" sequence to the list of sequences.
34 mp->msgattrs[0] = getcpy (current);
35 mp->msgattrs[1] = NULL;
36 make_all_public (mp); /* initially, make all public */
38 /* If folder is empty, don't scan for sequence information */
42 /* Initialize the public sequences */
45 /* Initialize the private sequences */
51 * read folder's sequences file for public sequences
55 seq_public (struct msgs *mp)
58 char *cp, seqfile[PATH_MAX];
59 char name[NAMESZ], field[BUFSIZ];
63 * If mh_seq == NULL (such as if nmh been compiled with
64 * NOPUBLICSEQ), or if *mh_seq == '\0' (the user has defined
65 * the "mh-sequences" profile entry, but left it empty),
66 * then just return, and do not initialize any public sequences.
68 if (mh_seq == NULL || *mh_seq == '\0')
71 /* get filename of sequence file */
72 snprintf (seqfile, sizeof(seqfile), "%s/%s", mp->foldpath, mh_seq);
74 if ((fp = lkfopen (seqfile, "r")) == NULL)
77 /* Use m_getfld to scan sequence file */
79 switch (state = m_getfld (state, name, field, sizeof(field), fp)) {
83 if (state == FLDPLUS) {
85 while (state == FLDPLUS) {
86 state = m_getfld (state, name, field, sizeof(field), fp);
89 seq_init (mp, getcpy (name), trimcpy (cp));
92 seq_init (mp, getcpy (name), trimcpy (field));
100 adios (NULL, "no blank lines are permitted in %s", seqfile);
107 adios (NULL, "%s is poorly formatted", seqfile);
109 break; /* break from for loop */
112 lkfclose (fp, seqfile);
117 * Scan profile/context list for private sequences.
119 * We search the context list for all keys that look like
120 * "atr-seqname-folderpath", and add them as private sequences.
124 seq_private (struct msgs *mp)
126 int i, j, alen, plen;
130 alen = strlen ("atr-");
131 plen = strlen (mp->foldpath) + 1;
133 for (np = m_defs; np; np = np->n_next) {
134 if (ssequal ("atr-", np->n_name)
135 && (j = strlen (np->n_name) - plen) > alen
136 && *(np->n_name + j) == '-'
137 && strcmp (mp->foldpath, np->n_name + j + 1) == 0) {
138 cp = getcpy (np->n_name + alen);
139 *(cp + j - alen) = '\0';
140 if ((i = seq_init (mp, cp, getcpy (np->n_field))) != -1)
141 make_seq_private (mp, i);
148 * Add the name of sequence to the list of folder sequences.
149 * Then parse the list of message ranges for this
150 * sequence, and setup the various bit flags for each
151 * message in the sequence.
153 * Return internal index for the sequence if successful.
154 * Return -1 on error.
158 seq_init (struct msgs *mp, char *name, char *field)
160 int i, j, k, is_current;
164 * Check if this is "cur" sequence,
165 * so we can do some special things.
167 is_current = !strcmp (current, name);
170 * Search for this sequence name to see if we've seen
171 * it already. If we've seen this sequence before,
172 * then clear the bit for this sequence from all the
173 * mesages in this folder.
175 for (i = 0; mp->msgattrs[i]; i++) {
176 if (!strcmp (mp->msgattrs[i], name)) {
177 for (j = mp->lowmsg; j <= mp->hghmsg; j++)
178 clear_sequence (mp, i, j);
183 /* Return error, if too many sequences */
191 * If we've already seen this sequence name, just free the
192 * name string. Else add it to the list of sequence names.
194 if (mp->msgattrs[i]) {
197 mp->msgattrs[i] = name;
198 mp->msgattrs[i + 1] = NULL;
202 * Split up the different message ranges at whitespace
204 for (ap = brkstring (field, " ", "\n"); *ap; ap++) {
205 if ((cp = strchr(*ap, '-')))
207 if ((j = m_atoi (*ap)) > 0) {
208 k = cp ? m_atoi (cp) : j;
211 * Keep mp->curmsg and "cur" sequence in synch. Unlike
212 * other sequences, this message doesn't need to exist.
213 * Think about the series of command (rmm; next) to
214 * understand why this can be the case. But if it does
215 * exist, we will still set the bit flag for it like
221 * We iterate through messages in this range
222 * and flip on bit for this sequence.
224 for (; j <= k; j++) {
225 if (j >= mp->lowmsg && j <= mp->hghmsg && does_exist(mp, j))
226 add_sequence (mp, i, j);
231 free (field); /* free string containing message ranges */