Implement cql_transform_cql2rpn

[yaz-moved-to-github.git] / src / zoom-opt.c

diff --git a/src/zoom-opt.c b/src/zoom-opt.c
index 631f467..48c0da7 100644 (file)
--- a/src/zoom-opt.c
+++ b/src/zoom-opt.c
@@ -1,18 +1,82 @@
-/*
- * Copyright (C) 1995-2007, Index Data ApS
+/* This file is part of the YAZ toolkit.
+ * Copyright (C) Index Data
  * See the file LICENSE for details.
- *
- * $Id: zoom-opt.c,v 1.7 2007-05-04 17:16:21 adam Exp $
  */
 /**
  * \file zoom-opt.c
  * \brief Implements ZOOM options handling
  */
+#if HAVE_CONFIG_H
+#include <config.h>
+#endif
+
 #include <assert.h>
 #include "zoom-p.h"
 
 #include <yaz/xmalloc.h>
 
+struct ZOOM_options_entry {
+    char *name;
+    char *value;
+    int len;                  /* of `value', which may contain NULs */
+    struct ZOOM_options_entry *next;
+};
+
+struct ZOOM_options_p {
+    int refcount;
+    void *callback_handle;
+    ZOOM_options_callback callback_func;
+    struct ZOOM_options_entry *entries;
+    ZOOM_options parent1;
+    ZOOM_options parent2;
+};
+
+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)
 {
@@ -58,7 +122,7 @@ ZOOM_API(ZOOM_options_callback)
     void *callback_handle)
 {
     ZOOM_options_callback callback_old;
-    
+
     assert(opt);
     callback_old = opt->callback_func;
     opt->callback_func = callback_func;
@@ -75,7 +139,7 @@ ZOOM_API(void)
     if (opt->refcount == 0)
     {
         struct ZOOM_options_entry *e;
-        
+
         ZOOM_options_destroy(opt->parent1);
         ZOOM_options_destroy(opt->parent2);
         e = opt->entries;
@@ -91,20 +155,6 @@ 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 +168,12 @@ 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)
@@ -142,7 +189,11 @@ ZOOM_API(const char *)
     if (!opt)
         return 0;
     if (opt->callback_func)
+    {
         v = (*opt->callback_func)(opt->callback_handle, name);
+        if (v)
+            *lenp = strlen(v);
+    }
     if (!v)
     {
         struct ZOOM_options_entry *e;
@@ -172,7 +223,7 @@ ZOOM_API(int)
     ZOOM_options_get_bool(ZOOM_options opt, const char *name, int defa)
 {
     const char *v = ZOOM_options_get(opt, name);
-    
+
     if (!v)
         return defa;
     if (!strcmp(v, "1") || !strcmp(v, "T"))
@@ -201,6 +252,7 @@ ZOOM_options_set_int(ZOOM_options opt, const char *name, int value)
 /*
  * Local variables:
  * c-basic-offset: 4
+ * c-file-style: "Stroustrup"
  * indent-tabs-mode: nil
  * End:
  * vim: shiftwidth=4 tabstop=8 expandtab