From 0e664fbee06e451911bf53d2df4e541cbcecd495 Mon Sep 17 00:00:00 2001
From: Adam Dickmeiss <adam@indexdata.dk>
Date: Sat, 5 May 2007 11:53:26 +0000
Subject: [PATCH] Added ZOOM_options_dup.

---
 include/yaz/zoom.h |    5 +++-
 src/zoom-opt.c     |   69 +++++++++++++++++++++++++++++++++++++---------------
 2 files changed, 53 insertions(+), 21 deletions(-)

diff --git a/include/yaz/zoom.h b/include/yaz/zoom.h
index 4e09e00..4a55a5b 100644
--- a/include/yaz/zoom.h
+++ b/include/yaz/zoom.h
@@ -24,7 +24,7 @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
-/* $Id: zoom.h,v 1.46 2007-03-21 11:27:46 adam Exp $ */
+/* $Id: zoom.h,v 1.47 2007-05-05 11:53:27 adam Exp $ */
 
 /**
  * \file zoom.h
@@ -314,6 +314,9 @@ ZOOM_API(ZOOM_options)
     ZOOM_options_create_with_parent2 (ZOOM_options parent1,
                                       ZOOM_options parent2);
 
+ZOOM_API(ZOOM_options)
+    ZOOM_options_dup(ZOOM_options src);
+
 ZOOM_API(const char *)
 ZOOM_options_get (ZOOM_options opt, const char *name);
 
diff --git a/src/zoom-opt.c b/src/zoom-opt.c
index 631f467..c199e89 100644
--- a/src/zoom-opt.c
+++ b/src/zoom-opt.c
@@ -2,7 +2,7 @@
  * Copyright (C) 1995-2007, Index Data ApS
  * See the file LICENSE for details.
  *
- * $Id: zoom-opt.c,v 1.7 2007-05-04 17:16:21 adam Exp $
+ * $Id: zoom-opt.c,v 1.8 2007-05-05 11:53:26 adam Exp $
  */
 /**
  * \file zoom-opt.c
@@ -13,6 +13,52 @@
 
 #include <yaz/xmalloc.h>
 
+static void set_value(struct ZOOM_options_entry **e,
+                      const char *value, int len)
+{
+    (*e)->value = 0;
+    (*e)->len = 0;
+    if (value)
+    {
+        (*e)->value = (char *) xmalloc(len+1);
+        memcpy((*e)->value, value, len);
+        (*e)->value[len] = '\0';
+        (*e)->len = len;
+    }
+}
+
+static void append_entry(struct ZOOM_options_entry **e,
+                         const char *name, const char *value, int len)
+{
+    *e = (struct ZOOM_options_entry *) xmalloc(sizeof(**e));
+    (*e)->name = xstrdup(name);
+    set_value(e, value, len);
+    (*e)->next = 0;
+}
+
+ZOOM_API(ZOOM_options)
+    ZOOM_options_dup(ZOOM_options src)
+{
+    if (!src)
+        return 0;
+    else
+    {
+        ZOOM_options dst = ZOOM_options_create();
+        struct ZOOM_options_entry *src_e = src->entries;
+        struct ZOOM_options_entry **dst_e = &dst->entries;
+        
+        while(src_e)
+        {
+            append_entry(dst_e, src_e->name, src_e->value, src_e->len);
+            dst_e = &(*dst_e)->next;
+            src_e = src_e->next;
+        }
+        dst->parent1 = ZOOM_options_dup(src->parent1);
+        dst->parent2 = ZOOM_options_dup(src->parent2);
+        return dst;
+    }
+}
+
 ZOOM_API(ZOOM_options)
     ZOOM_options_create_with_parent(ZOOM_options parent)
 {
@@ -91,20 +137,6 @@ ZOOM_API(void)
     }
 }
 
-/* PRIVATE to ZOOM_options_setl() */
-static void
-_set_value(struct ZOOM_options_entry **e, const char *value, int len)
-{
-    (*e)->value = 0;
-    (*e)->len = 0;
-    if (value)
-    {
-        (*e)->value = (char *) xmalloc(len+1);
-        memcpy((*e)->value, value, len);
-        (*e)->value[len] = '\0';
-        (*e)->len = len;
-    }
-}
 
 ZOOM_API(void)
     ZOOM_options_setl(ZOOM_options opt, const char *name, const char *value,
@@ -118,15 +150,12 @@ ZOOM_API(void)
         if (!strcmp((*e)->name, name))
         {
             xfree((*e)->value);
-            _set_value(e, value, len);
+            set_value(e, value, len);
             return;
         }
         e = &(*e)->next;
     }
-    *e = (struct ZOOM_options_entry *) xmalloc(sizeof(**e));
-    (*e)->name = xstrdup(name);
-    _set_value(e, value, len);
-    (*e)->next = 0;
+    append_entry(e, name, value, len);
 }
 
 ZOOM_API(void)
-- 
1.7.10.4