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[pazpar2-moved-to-github.git] / src / normalize_cache.c

diff --git a/src/normalize_cache.c b/src/normalize_cache.c
new file mode 100644 (file)
index 0000000..7b0baea
--- /dev/null
+++ b/src/normalize_cache.c
@@ -0,0 +1,94 @@
+/* This file is part of Pazpar2.
+   Copyright (C) 2006-2009 Index Data
+
+Pazpar2 is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 2, or (at your option) any later
+version.
+
+Pazpar2 is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+*/
+
+#include <string.h>
+
+#include <yaz/yaz-util.h>
+#include <yaz/nmem.h>
+
+#if HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "normalize_cache.h"
+
+#include "pazpar2_config.h"
+
+struct cached_item {
+    char *spec;
+    struct cached_item *next;
+    normalize_record_t nt;
+};
+
+struct normalize_cache_s {
+    struct cached_item *items;
+    NMEM nmem;
+};
+
+normalize_cache_t normalize_cache_create(void)
+{
+    NMEM nmem = nmem_create();
+    normalize_cache_t nc = nmem_malloc(nmem, sizeof(*nc));
+    nc->nmem = nmem;
+    nc->items = 0;
+    return nc;
+}
+
+normalize_record_t normalize_cache_get(normalize_cache_t nc,
+                                       struct conf_service *service,
+                                       const char *spec)
+{
+    normalize_record_t nt;
+    struct cached_item *ci = nc->items;
+    for (; ci; ci = ci->next)
+        if (!strcmp(spec, ci->spec))
+            return ci->nt;
+
+    nt = normalize_record_create(service, spec);
+    if (nt)
+    {
+        ci = nmem_malloc(nc->nmem, sizeof(*ci));
+        ci->next = nc->items;
+        nc->items = ci;
+        ci->nt = nt;
+        ci->spec = nmem_strdup(nc->nmem, spec);
+    }
+    return nt;
+}
+
+void normalize_cache_destroy(normalize_cache_t nc)
+{
+    if (nc)
+    {
+        struct cached_item *ci = nc->items;
+        for (; ci; ci = ci->next)
+            normalize_record_destroy(ci->nt);
+        nmem_destroy(nc->nmem);
+    }
+}
+
+/*
+ * Local variables:
+ * c-basic-offset: 4
+ * c-file-style: "Stroustrup"
+ * indent-tabs-mode: nil
+ * End:
+ * vim: shiftwidth=4 tabstop=8 expandtab
+ */
+