apr_json: Add support for encoding and decoding RFC8259 JSON.

Submitted by: Moriyoshi Koizumi <mozo mozo jp>


git-svn-id: https://svn.apache.org/repos/asf/apr/apr/trunk@1835348 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 74 insertions, 0 deletions

diff --git a/json/apr_json.c b/json/apr_json.c
new file mode 100644
index 000000000..98966659f
--- /dev/null
+++ b/json/apr_json.c
@@ -0,0 +1,74 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <ctype.h>
+#include <stdlib.h>
+
+#include "apr_json.h"
+
+#define APR_JSON_OBJECT_INSERT_TAIL(o, e) do {                              \
+        apr_json_kv_t *ap__b = (e);                                        \
+        APR_RING_INSERT_TAIL(&(o)->list, ap__b, apr_json_kv_t, link);      \
+        APR_RING_CHECK_CONSISTENCY(&(o)->list, apr_json_kv_t, link);                             \
+    } while (0)
+
+apr_json_value_t *apr_json_value_create(apr_pool_t *pool)
+{
+    return apr_pcalloc(pool, sizeof(apr_json_value_t));
+}
+
+apr_json_object_t *apr_json_object_create(apr_pool_t *pool)
+{
+    apr_json_object_t *object = apr_pcalloc(pool,
+            sizeof(apr_json_object_t));
+    APR_RING_INIT(&object->list, apr_json_kv_t, link);
+    object->hash = apr_hash_make(pool);
+
+    return object;
+}
+
+void apr_json_object_set(apr_json_object_t *object, apr_json_value_t *key,
+        apr_json_value_t *val, apr_pool_t *pool)
+{
+    apr_json_kv_t *kv;
+
+    kv = apr_hash_get(object->hash, key->value.string.p, key->value.string.len);
+
+    if (!val) {
+        if (kv) {
+            apr_hash_set(object->hash, key->value.string.p, key->value.string.len,
+                    NULL);
+            APR_RING_REMOVE((kv), link);
+        }
+        return;
+    }
+
+    if (!kv) {
+        kv = apr_palloc(pool, sizeof(apr_json_kv_t));
+        APR_RING_ELEM_INIT(kv, link);
+        APR_JSON_OBJECT_INSERT_TAIL(object, kv);
+        apr_hash_set(object->hash, key->value.string.p, key->value.string.len,
+                kv);
+    }
+
+    kv->k = key;
+    kv->v = val;
+}
+
+apr_json_kv_t *apr_json_object_get(apr_json_object_t *object, const char *key)
+{
+    return apr_hash_get(object->hash, key, APR_HASH_KEY_STRING);
+}