add function to parse array of floats from json

2 files changed, 33 insertions, 0 deletions

diff --git a/redist/json_helpers.c b/redist/json_helpers.c
index c52301d..af7ddda 100644
--- a/redist/json_helpers.c
+++ b/redist/json_helpers.c
@@ -216,3 +216,32 @@ void json_load_file(const char* path) {
 	free(JSON_STRING);
 }
 
+int parse_float_array(char* str, jsmntok_t* token, FLT** f, uint8_t count) {
+	uint16_t i = 0;
+
+	if (count==0) return 0;
+
+	if (*f!=NULL) free(*f);
+	*f = malloc(sizeof(FLT) * count);
+
+	for(i=0;i<count;++i) {
+		char* end = str + token->end;
+		char* s = str+token->start;
+
+		#ifdef USE_DOUBLE
+		(*f)[i] = strtod(s, &end);
+		#else
+		(*f)[i] = strtof(s, &end);
+		#endif
+
+		if (s == end) {
+			free(*f);
+			*f=NULL;
+			return 0; //not a float
+		}
+		token++;
+	}
+
+
+	return count;
+}
\ No newline at end of file
diff --git a/redist/json_helpers.h b/redist/json_helpers.h
index 1cccfe3..3ebf66b 100644
--- a/redist/json_helpers.h
+++ b/redist/json_helpers.h
@@ -4,6 +4,8 @@
 #define JSON_HELPERS_H
 
 #include <stdint.h>
+#include <jsmn.h>
+#include "survive_types.h"
 
 void json_write_float_array(FILE* f, const char* tag, float* v, uint8_t count);
 void json_write_double_array(FILE* f, const char* tag, double* v, uint8_t count);
@@ -11,6 +13,8 @@ void json_write_uint32(FILE* f, const char* tag, uint32_t v);
 void json_write_float(FILE* f, const char* tag, float v);
 void json_write_str(FILE* f, const char* tag, const char* v);
 
+int parse_float_array(char* str, jsmntok_t* token, FLT** values, uint8_t count);
+
 void json_load_file(const char* path);
 extern void (*json_begin_object)(char* tag);
 extern void (*json_end_object)();