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-rw-r--r--src/vat/json_format.h254
1 files changed, 254 insertions, 0 deletions
diff --git a/src/vat/json_format.h b/src/vat/json_format.h
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+++ b/src/vat/json_format.h
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+/*
+ *------------------------------------------------------------------
+ * json_format.h
+ *
+ * Copyright (c) 2015 Cisco and/or its affiliates.
+ * Licensed 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.
+ *------------------------------------------------------------------
+ */
+
+#ifndef __JSON_FORMAT_H__
+#define __JSON_FORMAT_H__
+
+#include <vppinfra/clib.h>
+#include <vppinfra/format.h>
+#include <netinet/ip.h>
+
+/* JSON value type */
+typedef enum
+{
+ VAT_JSON_NONE,
+ VAT_JSON_OBJECT,
+ VAT_JSON_ARRAY,
+ VAT_JSON_STRING,
+ VAT_JSON_REAL,
+ VAT_JSON_UINT,
+ VAT_JSON_INT,
+ VAT_JSON_IPV4,
+ VAT_JSON_IPV6,
+ VAT_JSON_MAX
+} vat_json_val_type_t;
+
+typedef struct vat_json_node_s vat_json_node_t;
+typedef struct vat_json_pair_s vat_json_pair_t;
+
+/* JSON object structure */
+struct vat_json_node_s
+{
+ vat_json_val_type_t type;
+ union
+ {
+ vat_json_pair_t *pairs;
+ vat_json_node_t *array;
+ u8 *string;
+ struct in_addr ip4;
+ struct in6_addr ip6;
+ u64 uint;
+ i64 sint;
+ f64 real;
+ };
+};
+
+struct vat_json_pair_s
+{
+ const char *name;
+ vat_json_node_t value;
+};
+
+void vat_json_print (FILE * ofp, vat_json_node_t * node);
+void vat_json_free (vat_json_node_t * node);
+
+static_always_inline void
+vat_json_init_object (vat_json_node_t * json)
+{
+ json->type = VAT_JSON_OBJECT;
+ json->pairs = NULL;
+}
+
+static_always_inline void
+vat_json_init_array (vat_json_node_t * json)
+{
+ json->type = VAT_JSON_ARRAY;
+ json->array = NULL;
+}
+
+static_always_inline void
+vat_json_set_string (vat_json_node_t * json, u8 * str)
+{
+ json->type = VAT_JSON_STRING;
+ json->string = str;
+}
+
+static_always_inline void
+vat_json_set_string_copy (vat_json_node_t * json, const u8 * str)
+{
+ u8 *ns = NULL;
+ vec_validate (ns, strlen ((const char *) str));
+ strcpy ((char *) ns, (const char *) str);
+ vec_add1 (ns, '\0');
+ vat_json_set_string (json, ns);
+}
+
+static_always_inline void
+vat_json_set_int (vat_json_node_t * json, i64 num)
+{
+ json->type = VAT_JSON_INT;
+ json->sint = num;
+}
+
+static_always_inline void
+vat_json_set_uint (vat_json_node_t * json, u64 num)
+{
+ json->type = VAT_JSON_UINT;
+ json->uint = num;
+}
+
+static_always_inline void
+vat_json_set_real (vat_json_node_t * json, f64 real)
+{
+ json->type = VAT_JSON_REAL;
+ json->real = real;
+}
+
+static_always_inline void
+vat_json_set_ip4 (vat_json_node_t * json, struct in_addr ip4)
+{
+ json->type = VAT_JSON_IPV4;
+ json->ip4 = ip4;
+}
+
+static_always_inline void
+vat_json_set_ip6 (vat_json_node_t * json, struct in6_addr ip6)
+{
+ json->type = VAT_JSON_IPV6;
+ json->ip6 = ip6;
+}
+
+static_always_inline vat_json_node_t *
+vat_json_object_add (vat_json_node_t * json, const char *name)
+{
+ ASSERT (VAT_JSON_OBJECT == json->type);
+ uword pos = vec_len (json->pairs);
+ vec_validate (json->pairs, pos);
+ json->pairs[pos].name = name;
+ return &json->pairs[pos].value;
+}
+
+static_always_inline vat_json_node_t *
+vat_json_array_add (vat_json_node_t * json)
+{
+ ASSERT (VAT_JSON_ARRAY == json->type);
+ uword pos = vec_len (json->array);
+ vec_validate (json->array, pos);
+ return &json->array[pos];
+}
+
+static_always_inline vat_json_node_t *
+vat_json_object_add_list (vat_json_node_t * json, const char *name)
+{
+ vat_json_node_t *array_node = vat_json_object_add (json, name);
+ vat_json_init_array (array_node);
+ return array_node;
+}
+
+static_always_inline void
+vat_json_object_add_string_copy (vat_json_node_t * json,
+ const char *name, u8 * str)
+{
+ vat_json_set_string_copy (vat_json_object_add (json, name), str);
+}
+
+static_always_inline void
+vat_json_object_add_uint (vat_json_node_t * json,
+ const char *name, u64 number)
+{
+ vat_json_set_uint (vat_json_object_add (json, name), number);
+}
+
+static_always_inline void
+vat_json_object_add_int (vat_json_node_t * json, const char *name, i64 number)
+{
+ vat_json_set_int (vat_json_object_add (json, name), number);
+}
+
+static_always_inline void
+vat_json_object_add_real (vat_json_node_t * json, const char *name, f64 real)
+{
+ vat_json_set_real (vat_json_object_add (json, name), real);
+}
+
+static_always_inline void
+vat_json_object_add_ip4 (vat_json_node_t * json,
+ const char *name, struct in_addr ip4)
+{
+ vat_json_set_ip4 (vat_json_object_add (json, name), ip4);
+}
+
+static_always_inline void
+vat_json_object_add_ip6 (vat_json_node_t * json,
+ const char *name, struct in6_addr ip6)
+{
+ vat_json_set_ip6 (vat_json_object_add (json, name), ip6);
+}
+
+static_always_inline void
+vat_json_array_add_int (vat_json_node_t * json, i64 number)
+{
+ vat_json_set_int (vat_json_array_add (json), number);
+}
+
+static_always_inline void
+vat_json_array_add_uint (vat_json_node_t * json, u64 number)
+{
+ vat_json_set_uint (vat_json_array_add (json), number);
+}
+
+static_always_inline void
+vat_json_object_add_bytes (vat_json_node_t * json,
+ const char *name, u8 * array, uword size)
+{
+ ASSERT (VAT_JSON_OBJECT == json->type);
+ vat_json_node_t *json_array = vat_json_object_add (json, name);
+ vat_json_init_array (json_array);
+ int i;
+ for (i = 0; i < size; i++)
+ {
+ vat_json_array_add_uint (json_array, array[i]);
+ }
+}
+
+static_always_inline vat_json_node_t *
+vat_json_object_get_element (vat_json_node_t * json, const char *name)
+{
+ int i = 0;
+
+ ASSERT (VAT_JSON_OBJECT == json->type);
+ for (i = 0; i < vec_len (json->pairs); i++)
+ {
+ if (0 == strcmp (json->pairs[i].name, name))
+ {
+ return &json->pairs[i].value;
+ }
+ }
+ return NULL;
+}
+
+#endif /* __JSON_FORMAT_H__ */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */