Merged folder_pack.c into folder.c.

[mmh] / uip / folder.c

diff --git a/uip/folder.c b/uip/folder.c
index b1398e4..616f57b 100644 (file)
--- a/uip/folder.c
+++ b/uip/folder.c
@@ -109,6 +109,7 @@ static crawl_callback_t get_folder_info_callback;
 static void print_folders(void);
 static int sfold(struct msgs *, char *);
 static void readonly_folders(void);
+static int folder_pack(struct msgs **, int);
 
 
 int
@@ -661,3 +662,96 @@ readonly_folders(void)
                        /* Why do we exclude absolute path names? --meillo */
                        get_folder_info(np->n_name + atrlen, NULL);
 }
+
+
+/*
+** pack (renumber) the messages in a folder
+** into a contiguous range from 1 to n.
+** Return -1 if error, else return 0.
+*/
+static int
+folder_pack(struct msgs **mpp, int verbose)
+{
+       int hole, msgnum, newcurrent = 0;
+       char newmsg[BUFSIZ], oldmsg[BUFSIZ];
+       struct msgs *mp;
+
+       mp = *mpp;
+
+       /*
+       ** Just return if folder is empty.
+       */
+       if (mp->nummsg == 0)
+               return 0;
+
+       /*
+       ** Make sure we have message status space allocated
+       ** for all numbers from 1 to current high message.
+       */
+       if (mp->lowoff > 1) {
+               if ((mp = folder_realloc(mp, 1, mp->hghmsg)))
+                       *mpp = mp;
+               else {
+                       advise(NULL, "unable to allocate folder storage");
+                       return -1;
+               }
+       }
+
+       for (msgnum = mp->lowmsg, hole = 1; msgnum <= mp->hghmsg; msgnum++) {
+               if (does_exist(mp, msgnum)) {
+                       if (msgnum != hole) {
+                               strncpy(newmsg, m_name(hole), sizeof(newmsg));
+                               strncpy(oldmsg, m_name(msgnum), sizeof(oldmsg));
+                               if (verbose)
+                                       printf("message %s becomes %s\n", oldmsg, newmsg);
+
+                               /*
+                               ** Invoke the external refile hook for each
+                               ** message being renamed.  This is done
+                               ** before the file is renamed so that the
+                               ** old message file is around for the hook.
+                               */
+
+                               snprintf(oldmsg, sizeof (oldmsg), "%s/%d",
+                                               mp->foldpath, msgnum);
+                               snprintf(newmsg, sizeof (newmsg), "%s/%d",
+                                               mp->foldpath, hole);
+                               ext_hook("ref-hook", oldmsg, newmsg);
+
+                               /* move the message file */
+                               if (rename(oldmsg, newmsg) == -1) {
+                                       advise(newmsg, "unable to rename %s to", oldmsg);
+                                       return -1;
+                               }
+
+                               /* check if this is the current message */
+                               if (msgnum == mp->curmsg)
+                                       newcurrent = hole;
+
+                               /* copy the attribute flags for this message */
+                               copy_msg_flags(mp, hole, msgnum);
+
+                               if (msgnum == mp->lowsel)
+                                       mp->lowsel = hole;
+                               if (msgnum == mp->hghsel)
+                                       mp->hghsel = hole;
+
+                               /*
+                               ** mark that sequence information has
+                               ** been modified
+                               */
+                               mp->msgflags |= SEQMOD;
+                       }
+                       hole++;
+               }
+       }
+
+       /* record the new number for the high/low message */
+       mp->lowmsg = 1;
+       mp->hghmsg = hole - 1;
+
+       if (newcurrent)
+               seq_setcur(mp, newcurrent);
+
+       return 0;
+}