Fix issue with setting null key (used for stealing data)

include/rjp.h

@@ -121,6 +121,11 @@ RJP_value* rjp_add_member_no_alloc(RJP_value* dest, char* key, size_t keylen, RJ
 //add an element to a json array
 RJP_value* rjp_add_element(RJP_value* dest, RJP_value value);
 
+//set existing object member's key
+void rjp_set_key(RJP_value* dest, const char* key, size_t keylen);
+//set existing object member's key without allocation. key must be allocated using rjp_alloc/rjp_calloc
+void rjp_set_key_no_alloc(RJP_value* dest, char* key, size_t keylen);
+
 //set existing value
 void rjp_set_value(RJP_value* dest, RJP_value value);
 
@@ -143,7 +148,7 @@ size_t rjp_num_members(const RJP_value* object);
 //Return the object member's key name
 char* rjp_member_name(const RJP_value* member);
 //Return the object member's key name length excluding null terminator
-size_t rjp_member_name_length(RJP_value* member);
+size_t rjp_member_name_length(const RJP_value* member);
 //Search for an object member with given key
 RJP_search_res rjp_search_member(const RJP_value* object, const char* search, size_t skip);
 //Search for first occurance of multiple keys. Returns first occurance of each.

src/output.c

@@ -16,6 +16,9 @@
 	along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
+#define __STDC_FORMAT_MACROS
+#include <inttypes.h>
+
 #include "rjp.h"
 #include "rjp_internal.h"
 #include "memory.h"
@@ -37,7 +40,7 @@ static size_t _rjp__write_value(char* dest, RJP_value* val){
 		size_t ret;
 		switch(val->type){
 		case json_integer:
-			ret = sprintf(dest, "%lli", val->integer);
+			ret = sprintf(dest, "%" PRId64, val->integer);
 			break;
 		case json_dfloat:
 			ret = sprintf(dest, "%lf", val->dfloat);

src/rjp.c

@@ -80,6 +80,32 @@ RJP_value* rjp_add_element(RJP_value* dest, RJP_value value){
 	dest->array.last->value.parent = dest;
 	return &dest->array.last->value;
 }
+void rjp_set_key(RJP_value* dest, const char* key, size_t keylen){
+	RJP_object_member* mem = (RJP_object_member*)dest;
+	if(key){
+		if(!keylen){
+			keylen = strlen(key);
+		}
+	}else{
+		keylen = 0;
+	}
+	mem->name.value = rjp_alloc(keylen + 1);
+	strncpy(mem->name.value, key, keylen);
+	mem->name.value[keylen] = 0;
+	mem->name.length = keylen;
+}
+void rjp_set_key_no_alloc(RJP_value* dest, char* key, size_t keylen){
+	RJP_object_member* mem = (RJP_object_member*)dest;
+	if(key){
+		if(!keylen){
+			keylen = strlen(key);
+		}
+	}else{
+		keylen = 0;
+	}
+	mem->name.value = key;
+	mem->name.length = keylen;
+}
 void rjp_set_value(RJP_value* dest, RJP_value value){
 	struct RJP_value* p = dest->parent;
 	*dest = value;
@@ -127,7 +153,7 @@ size_t rjp_num_members(const RJP_value* object){
 char* rjp_member_name(const RJP_value* member){
 	return ((RJP_object_member*)member)->name.value;
 }
-size_t rjp_member_name_length(RJP_value* member){
+size_t rjp_member_name_length(const RJP_value* member){
  return ((RJP_object_member*)member)->name.length;
 }
 

src/strings.c

@@ -16,6 +16,9 @@
 	along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
+#define __STDC_FORMAT_MACROS
+#include <inttypes.h>
+
 #include "strings.h"
 #include "rjp_internal.h"
 
@@ -301,7 +304,7 @@ size_t _rjp__array_strlen(RJP_value* arr){
 	for(;element_list;element_list = element_list->next){
 		switch(element_list->value.type){
 		case json_integer:
-			count += snprintf(NULL, 0, "%lli", element_list->value.integer);
+			count += snprintf(NULL, 0, "%" PRId64, element_list->value.integer);
 			break;
 		case json_dfloat:
 			count += snprintf(NULL, 0, "%lf", element_list->value.dfloat);
@@ -350,7 +353,7 @@ size_t _rjp__object_strlen(RJP_value* root){
 size_t _rjp__value_strlen(RJP_value* root){
 	switch(root->type){
 	case json_integer:
-		return snprintf(NULL, 0, "%lli", root->integer);
+		return snprintf(NULL, 0, "%" PRId64, root->integer);
 	case json_dfloat:
 		return snprintf(NULL, 0, "%lf", root->dfloat);
 	case json_boolean: