3 * burst.c -- explode digests into individual messages
10 static struct swit switches[] = {
30 static char delim3[] = "-------";
40 static int find_delim (int, struct smsg *);
41 static void burst (struct msgs **, int, struct smsg *, int, int, int);
42 static void cpybrst (FILE *, FILE *, char *, char *, int);
46 main (int argc, char **argv)
48 int inplace = 0, quietsw = 0, verbosw = 0;
49 int msgp = 0, hi, msgnum, numburst;
50 char *cp, *maildir, *folder = NULL, buf[BUFSIZ];
51 char **argp, **arguments, *msgs[MAXARGS];
56 setlocale(LC_ALL, "");
58 invo_name = r1bindex (argv[0], '/');
60 /* read user profile/context */
63 arguments = getarguments (invo_name, argc, argv, 1);
66 while ((cp = *argp++)) {
68 switch (smatch (++cp, switches)) {
70 ambigsw (cp, switches);
73 adios (NULL, "-%s unknown\n", cp);
76 snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
78 print_help (buf, switches, 1);
81 print_version(invo_name);
106 if (*cp == '+' || *cp == '@') {
108 adios (NULL, "only one folder at a time!");
110 folder = path (cp + 1, *cp == '+' ? TFOLDER : TSUBCWF);
116 if (!context_find ("path"))
117 free (path ("./", TFOLDER));
119 msgs[msgp++] = "cur";
121 folder = getfolder (1);
122 maildir = m_maildir (folder);
124 if (chdir (maildir) == NOTOK)
125 adios (maildir, "unable to change directory to");
127 /* read folder and create message structure */
128 if (!(mp = folder_read (folder)))
129 adios (NULL, "unable to read folder %s", folder);
131 /* check for empty folder */
133 adios (NULL, "no messages in %s", folder);
135 /* parse all the message ranges/sequences and set SELECTED */
136 for (msgnum = 0; msgnum < msgp; msgnum++)
137 if (!m_convert (mp, msgs[msgnum]))
139 seq_setprev (mp); /* set the previous-sequence */
141 smsgs = (struct smsg *)
142 calloc ((size_t) (MAXFOLDER + 2), sizeof(*smsgs));
144 adios (NULL, "unable to allocate burst storage");
148 /* burst all the SELECTED messages */
149 for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
150 if (is_selected (mp, msgnum)) {
151 if ((numburst = find_delim (msgnum, smsgs)) >= 1) {
153 printf ("%d message%s exploded from digest %d\n",
154 numburst, numburst > 1 ? "s" : "", msgnum);
155 burst (&mp, msgnum, smsgs, numburst, inplace, verbosw);
159 admonish (NULL, "message %d not in digest format",
161 } /* this pair of braces was missing before 1999-07-15 */
163 adios (NULL, "burst() botch -- you lose big");
168 free ((char *) smsgs);
169 context_replace (pfolder, folder); /* update current folder */
172 * If -inplace is given, then the first message burst becomes
173 * the current message (which will now show a table of contents).
174 * Otherwise, the first message extracted from the first digest
175 * becomes the current message.
178 if (mp->lowsel != mp->curmsg)
179 seq_setcur (mp, mp->lowsel);
181 if (hi <= mp->hghmsg)
185 seq_save (mp); /* synchronize message sequences */
186 context_save (); /* save the context file */
187 folder_free (mp); /* free folder/message structure */
193 * Scan the message and find the beginning and
194 * end of all the messages in the digest.
198 find_delim (int msgnum, struct smsg *smsgs)
200 int ld3, wasdlm, msgp;
207 ld3 = strlen (delim3);
209 if ((in = fopen (msgnam = m_name (msgnum), "r")) == NULL)
210 adios (msgnam, "unable to read message");
212 for (msgp = 0, pos = 0L; msgp <= MAXFOLDER;) {
213 while (fgets (buffer, sizeof(buffer), in) && buffer[0] == '\n')
214 pos += (long) strlen (buffer);
217 fseek (in, pos, SEEK_SET);
218 smsgs[msgp].s_start = pos;
220 for (c = 0; fgets (buffer, sizeof(buffer), in); c = buffer[0]) {
221 if (strncmp (buffer, delim3, ld3) == 0
222 && (msgp == 1 || c == '\n')
223 && ((cc = peekc (in)) == '\n' || cc == EOF))
226 pos += (long) strlen (buffer);
229 wasdlm = strncmp (buffer, delim3, ld3) == 0;
230 if (smsgs[msgp].s_start != pos)
231 smsgs[msgp++].s_stop = (c == '\n' && wasdlm) ? pos - 1 : pos;
235 smsgs[msgp - 1].s_stop -= ((long) strlen (buffer) + 1);
236 msgp++; /* fake "End of XXX Digest" */
241 pos += (long) strlen (buffer);
245 return (msgp - 1); /* toss "End of XXX Digest" */
250 * Burst out the messages in the digest into the folder
254 burst (struct msgs **mpp, int msgnum, struct smsg *smsgs, int numburst,
255 int inplace, int verbosw)
259 char f1[BUFSIZ], f2[BUFSIZ], f3[BUFSIZ];
264 if ((in = fopen (msgnam = m_name (msgnum), "r")) == NULL)
265 adios (msgnam, "unable to read message");
267 mode = fstat (fileno(in), &st) != NOTOK ? (st.st_mode & 0777) : m_gmprot();
271 * See if we have enough space in the folder
272 * structure for all the new messages.
274 if ((mp->hghmsg + numburst > mp->hghoff) &&
275 !(mp = folder_realloc (mp, mp->lowoff, mp->hghmsg + numburst)))
276 adios (NULL, "unable to allocate folder storage");
279 j = mp->hghmsg; /* old value */
280 mp->hghmsg += numburst;
281 mp->nummsg += numburst;
284 * If this is not the highest SELECTED message, then
285 * increment mp->hghsel by numburst, since the highest
286 * SELECTED is about to be slid down by that amount.
288 if (msgnum < mp->hghsel)
289 mp->hghsel += numburst;
292 * If -inplace is given, renumber the messages after the
293 * source message, to make room for each of the messages
294 * contained within the digest.
297 for (i = mp->hghmsg; j > msgnum; i--, j--) {
298 strncpy (f1, m_name (i), sizeof(f1));
299 strncpy (f2, m_name (j), sizeof(f2));
300 if (does_exist (mp, j)) {
302 printf ("message %d becomes message %d\n", j, i);
304 if (rename (f2, f1) == NOTOK)
305 admonish (f1, "unable to rename %s to", f2);
306 copy_msg_flags (mp, i, j);
307 clear_msg_flags (mp, j);
308 mp->msgflags |= SEQMOD;
313 unset_selected (mp, msgnum);
315 /* new hghmsg is hghmsg + numburst */
316 i = inplace ? msgnum + numburst : mp->hghmsg;
317 for (j = numburst; j >= (inplace ? 0 : 1); i--, j--) {
318 strncpy (f1, m_name (i), sizeof(f1));
319 strncpy (f2, m_scratch ("", invo_name), sizeof(f2));
320 if (verbosw && i != msgnum)
321 printf ("message %d of digest %d becomes message %d\n", j, msgnum, i);
323 if ((out = fopen (f2, "w")) == NULL)
324 adios (f2, "unable to write message");
326 fseek (in, smsgs[j].s_start, SEEK_SET);
327 cpybrst (in, out, msgnam, f2,
328 (int) (smsgs[j].s_stop - smsgs[j].s_start));
332 strncpy (f3, m_backup (f1), sizeof(f3));
333 if (rename (f1, f3) == NOTOK)
334 admonish (f3, "unable to rename %s to", f1);
336 if (rename (f2, f1) == NOTOK)
337 admonish (f1, "unable to rename %s to", f2);
338 copy_msg_flags (mp, i, msgnum);
339 mp->msgflags |= SEQMOD;
351 * Copy a mesage which is being burst out of a digest.
352 * It will remove any "dashstuffing" in the message.
356 cpybrst (FILE *in, FILE *out, char *ifile, char *ofile, int len)
358 register int c, state;
360 for (state = S1; (c = fgetc (in)) != EOF && len > 0; len--) {
395 state = (c == '\n') ? S1 : S2;
404 if (ferror (in) && !feof (in))
405 adios (ifile, "error reading");
407 adios (ofile, "error writing");