X-Git-Url: https://diplodocus.org/git/nmh/blobdiff_plain/6c42153ad9362cc676ea66563bf400d7511b3b68..a596b2e5a67b5a250c571d4544c7726554c1ed44:/sbr/folder_realloc.c

diff --git a/sbr/folder_realloc.c b/sbr/folder_realloc.c
index f3d99ba7..8ed95e2e 100644
--- a/sbr/folder_realloc.c
+++ b/sbr/folder_realloc.c
@@ -1,8 +1,4 @@
-
-/*
- * folder_realloc.c -- realloc a folder/msgs structure
- *
- * $Id$
+/* folder_realloc.c -- realloc a folder/msgs structure
  *
  * This code is Copyright (c) 2002, by the authors of nmh.  See the
  * COPYRIGHT file in the root directory of the nmh distribution for
@@ -10,6 +6,7 @@
  */
 
 #include <h/mh.h>
+#include <h/utils.h>
 
 /*
  * Reallocate some of the space in the folder
@@ -22,6 +19,8 @@
 struct msgs *
 folder_realloc (struct msgs *mp, int lo, int hi)
 {
+    struct bvector *tmpstats, *t;
+    size_t i;
     int msgnum;
 
     /* sanity checks */
@@ -40,55 +39,22 @@ folder_realloc (struct msgs *mp, int lo, int hi)
     if (lo == mp->lowoff && hi == mp->hghoff)
 	return mp;
 
-    if (lo == mp->lowoff) {
-	/*
-	 * We are just extending (or shrinking) the end of message
-	 * status array.  So we don't have to move anything and can
-	 * just realloc the message status array.
-	 */
-	if (!(mp->msgstats = realloc (mp->msgstats, MSGSTATSIZE(mp, lo, hi)))) {
-	    advise (NULL, "unable to reallocate message storage");
-	    return NULL;
-	}
-    } else {
-	/*
-	 * We are changing the offset of the message status
-	 * array.  So we will need to shift everything.
-	 */
-	seqset_t *tmpstats;
-
-	/* first allocate the new message status space */
-	if (!(tmpstats = malloc (MSGSTATSIZE(mp, lo, hi)))) {
-	    advise (NULL, "unable to reallocate message storage");
-	    return NULL;
-	}
-
-	/* then copy messages status array with shift */
-	if (mp->nummsg > 0) {
-	    for (msgnum = mp->lowmsg; msgnum <= mp->hghmsg; msgnum++)
-		tmpstats[msgnum - lo] = mp->msgstats[msgnum - mp->lowoff];
-	}
-	free(mp->msgstats);
-	mp->msgstats = tmpstats;
+    /* first allocate the new message status space */
+    mp->num_msgstats = MSGSTATNUM (lo, hi);
+    tmpstats = mh_xmalloc (MSGSTATSIZE(mp));
+    for (i = 0, t = tmpstats; i < mp->num_msgstats; ++i, ++t) {
+        bvector_init(t);
     }
 
-    mp->lowoff = lo;
-    mp->hghoff = hi;
-
-    /*
-     * Clear all the flags for entries outside
-     * the current message range for this folder.
-     */
+    /* then copy messages status array with shift */
     if (mp->nummsg > 0) {
-	for (msgnum = mp->lowoff; msgnum < mp->lowmsg; msgnum++)
-	    clear_msg_flags (mp, msgnum);
-	for (msgnum = mp->hghmsg + 1; msgnum <= mp->hghoff; msgnum++)
-	    clear_msg_flags (mp, msgnum);
-    } else {
-	/* no messages, so clear entire range */
-	for (msgnum = mp->lowoff; msgnum <= mp->hghoff; msgnum++)
-	    clear_msg_flags (mp, msgnum);
+        for (msgnum = mp->lowmsg; msgnum <= mp->hghmsg; msgnum++)
+            bvector_copy (tmpstats + msgnum - lo, msgstat (mp, msgnum));
     }
+    free(mp->msgstats);
+    mp->msgstats = tmpstats;
+    mp->lowoff = lo;
+    mp->hghoff = hi;
 
     return mp;
 }