MME2 changes - Propped commits from openmme/paging branch. Added scripts
for code gen
Change-Id: Ie55032217232214ac8544ca76ea34335205329e4
diff --git a/src/common/json_parser.c b/src/common/json_parser.c
new file mode 100644
index 0000000..a968ba6
--- /dev/null
+++ b/src/common/json_parser.c
@@ -0,0 +1,159 @@
+/*
+ * Copyright (c) 2003-2018, Great Software Laboratory Pvt. Ltd.
+ * Copyright (c) 2017 Intel Corporation
+ * Copyright (c) 2019, Infosys Ltd.
+ *
+ * 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.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+#include "log.h"
+
+FILE *json_fp;
+
+static char *
+seek_to_tag(char *name)
+{
+ char *tmp = name;
+ char tag[64] = {0};
+ char last_iteration = 0;
+
+ rewind(json_fp);
+
+ tmp = strchr(name, '.');
+ strncpy(tag, name, tmp-name);
+ ++tmp;
+
+ while(1) {
+ char tag_not_found = 1;
+ char *line =(char *) calloc(1, 128);
+ char *entry;
+ char *tmp2;
+
+ while(tag_not_found) {
+ if (NULL == fgets(line, 128, json_fp)) return NULL;
+ if(NULL != (entry = strstr(line, tag))) {
+ tag_not_found = 0; /*found*/
+ if(last_iteration) return line;
+ break;
+ }
+ if(feof(json_fp)) return NULL;
+ }
+#if 0
+ if(NULL == strchr(tmp, '.')) {
+ /*This is the last tag*/
+ return line;
+ }
+#endif
+ tmp2 = strchr(tmp, '.');
+ if(NULL == tmp2) {
+ last_iteration = 1;
+ tmp2 = tmp+strlen(tmp);
+ }
+ memset(tag, 0, 64);
+ strncpy(tag, tmp, tmp2-tmp);
+ tmp = tmp2+1;
+ tag_not_found = 1;/*seach for next tag*/
+ }
+
+}
+
+char *
+get_string_scalar(char *path)
+{
+ char *entry = seek_to_tag(path);
+ char *value = calloc(1, 128);
+
+ if(NULL == entry) {
+ log_msg(LOG_ERROR, "%s: entry not found\n", path);
+ free(value);
+ return NULL;
+ }
+
+ if (NULL == value)
+ {
+ log_msg(LOG_ERROR,"calloc function fail");
+ return NULL;
+ }
+ char *tmp = strchr(entry, ':');
+ sscanf(tmp, ": \"%[^\"]", value);
+ log_msg(LOG_INFO, "%s = %s\n", path, value);
+ return value;
+}
+
+int
+get_int_scalar(char *path)
+{
+ char *entry = seek_to_tag(path);
+ unsigned int i = 0;
+
+ if(NULL == entry) {
+ log_msg(LOG_ERROR, "%s: entry not found\n", path);
+ return -1;
+ }
+ char *tmp = strchr(entry, ':');
+
+ i = atoi(tmp+1);
+
+ free(entry);
+ log_msg(LOG_INFO, "%s = %d\n", path, i);
+ return i;
+}
+
+
+int
+get_ip_scalar(char *path)
+{
+ char *val = get_string_scalar(path);
+ unsigned int addr = 0;
+
+ if(NULL == val) addr = -1;
+ else addr = inet_addr(val);
+
+ free(val);
+ return ntohl(addr);
+}
+
+int
+load_json(char *filename)
+{
+ json_fp = fopen(filename, "r");
+
+ if(NULL == json_fp) {
+ log_msg(LOG_ERROR, "Error opening json file\n");
+ perror("Error:");
+ return -1;
+ }
+
+ return 0;
+}
+
+/** TEST CODE
+void
+main()
+{
+
+ load_json("test.json");
+ get_string_scalar("root.scalar1");
+ get_string_scalar("root.scalar2");
+ get_string_scalar("root.scalarx");
+ get_string_scalar("root.scalar3");
+ get_string_scalar("root.scalar4");
+ get_string_scalar("root.nested.scalar5");
+}
+**/