Added external program hooks.

[mmh] / uip / burst.c

diff --git a/uip/burst.c b/uip/burst.c
index 6b9be83..908de0d 100644 (file)
--- a/uip/burst.c
+++ b/uip/burst.c
@@ -42,7 +42,7 @@ struct smsg {
  * static prototypes
  */
 static int find_delim (int, struct smsg *);
-static void burst (struct msgs **, int, struct smsg *, int, int, int);
+static void burst (struct msgs **, int, struct smsg *, int, int, int, char *);
 static void cpybrst (FILE *, FILE *, char *, char *, int);
 
 
@@ -156,7 +156,7 @@ main (int argc, char **argv)
                if (verbosw)
                    printf ("%d message%s exploded from digest %d\n",
                            numburst, numburst > 1 ? "s" : "", msgnum);
-               burst (&mp, msgnum, smsgs, numburst, inplace, verbosw);
+               burst (&mp, msgnum, smsgs, numburst, inplace, verbosw, maildir);
            } else {
                if (numburst == 0) {
                    if (!quietsw)
@@ -256,7 +256,7 @@ find_delim (int msgnum, struct smsg *smsgs)
 
 static void
 burst (struct msgs **mpp, int msgnum, struct smsg *smsgs, int numburst,
-       int inplace, int verbosw)
+       int inplace, int verbosw, char *maildir)
 {
     int i, j, mode;
     char *msgnam;
@@ -296,6 +296,9 @@ burst (struct msgs **mpp, int msgnum, struct smsg *smsgs, int numburst,
      * If -inplace is given, renumber the messages after the
      * source message, to make room for each of the messages
      * contained within the digest.
+     *
+     * This is equivalent to refiling a message from the point
+     * of view of the external hooks.
      */
     if (inplace) {
        for (i = mp->hghmsg; j > msgnum; i--, j--) {
@@ -307,6 +310,11 @@ burst (struct msgs **mpp, int msgnum, struct smsg *smsgs, int numburst,
 
                if (rename (f2, f1) == NOTOK)
                    admonish (f1, "unable to rename %s to", f2);
+
+               (void)snprintf(f1, sizeof (f1), "%s/%d", maildir, i);
+               (void)snprintf(f2, sizeof (f2), "%s/%d", maildir, j);
+               ext_hook("ref-hook", f1, f2);
+
                copy_msg_flags (mp, i, j);
                clear_msg_flags (mp, j);
                mp->msgflags |= SEQMOD;
@@ -316,7 +324,25 @@ burst (struct msgs **mpp, int msgnum, struct smsg *smsgs, int numburst,
     
     unset_selected (mp, msgnum);
 
-    /* new hghmsg is hghmsg + numburst */
+    /* new hghmsg is hghmsg + numburst
+     *
+     * At this point, there is an array of numburst smsgs, each element of
+     * which contains the starting and stopping offsets (seeks) of the message
+     * in the digest.  The inplace flag is set if the original digest is replaced
+     * by a message containing the table of contents.  smsgs[0] is that table of
+     * contents.  Go through the message numbers in reverse order (high to low).
+     *
+     * Set f1 to the name of the destination message, f2 to the name of a scratch
+     * file.  Extract a message from the digest to the scratch file.  Move the
+     * original message to a backup file if the destination message number is the
+     * same as the number of the original message, which only happens if the
+     * inplace flag is set.  Then move the scratch file to the destination message.
+     *
+     * Moving the original message to the backup file is equivalent to deleting the
+     * message from the point of view of the external hooks.  And bursting each
+     * message is equivalent to adding a new message.
+     */
+
     i = inplace ? msgnum + numburst : mp->hghmsg;
     for (j = numburst; j >= (inplace ? 0 : 1); i--, j--) {
        strncpy (f1, m_name (i), sizeof(f1));
@@ -336,9 +362,16 @@ burst (struct msgs **mpp, int msgnum, struct smsg *smsgs, int numburst,
            strncpy (f3, m_backup (f1), sizeof(f3));
            if (rename (f1, f3) == NOTOK)
                admonish (f3, "unable to rename %s to", f1);
+
+           (void)snprintf(f3, sizeof (f3), "%s/%d", maildir, i);
+           ext_hook("del-hook", f3, (char *)0);
        }
        if (rename (f2, f1) == NOTOK)
            admonish (f1, "unable to rename %s to", f2);
+
+       (void)snprintf(f3, sizeof (f3), "%s/%d", maildir, i);
+       ext_hook("add-hook", f3, (char *)0);
+
        copy_msg_flags (mp, i, msgnum);
        mp->msgflags |= SEQMOD;
     }