new: ability to not build json_auto_parse and json_stringify functions

Author: Holixus

CMakeLists.txt

@@ -10,6 +10,9 @@ OPTION(JSON_HEX_NUMBERS "Enabled support of 0x integers" OFF)
 OPTION(JSON_PACKED "use packed json item structure" OFF)
 OPTION(JSON_SHORT_NEXT "use short type for next field of jsn_t" OFF)
 
+OPTION(JSON_AUTO_PARSE_FN "Add json_auto_parse() function to the lib" ON)
+OPTION(JSON_STRINGIFY_FN "Add json_stringify() function to the lib" ON)
+
 
 OPTION(HOST_DEBUG "Log to console" OFF)
 

README.md

@@ -22,6 +22,10 @@ A small footprint(code and memory) simple [JSON](https://www.rfc-editor.org/rfc/
 * `JSON_FLOATS`(OFF) -- Enable support of Floating point Numbers
 * `JSON_SHORT_NEXT`(OFF) -- Use `short` type for next field of jsn_t
 * `JSON_PACKED`(OFF) -- Use packed json item structure
+
+* `JSON_AUTO_PARSE_FN'(ON) -- Build json_auto_parse() function
+* `JSON_STRINGIFY_FN'(ON) -- Build json_stringify() function
+
 * `BUILD_TESTS`(ON) -- Build tests application
 
 # Include files

nano/json.h.in

@@ -8,6 +8,9 @@
 #cmakedefine JSON_PACKED
 #cmakedefine JSON_SHORT_NEXT
 
+#cmakedefine JSON_AUTO_PARSE_FN
+#cmakedefine JSON_STRINGIFY_FN
+
 #ifdef JSON_FLOATS
 #include "math.h"
 #endif
@@ -64,9 +67,13 @@ jsn_t;
 
 int json_parse(jsn_t *pool, size_t size, /* <-- */ char *text);
 
+#ifdef JSON_AUTO_PARSE_FN
 jsn_t *json_auto_parse(char *text, char **end);
+#endif
 
+#ifdef JSON_STRINGIFY_FN
 char *json_stringify(char *outbuf, size_t size, /* <-- */ jsn_t *root);
+#endif
 
 
 
@@ -108,7 +115,10 @@ jsn_t *json_cell(jsn_t *obj, int index);
 /* internal but may be usefull functions                                    */
 
 int string_unescape(char *s);
+
+#ifdef JSON_STRINGIFY_FN
 char *string_escape(char *p, char *e, char const *s);
+#endif
 
 int match_number(char **p, jsn_t *obj);
 

parser.c

@@ -374,6 +374,7 @@ int json_parse(jsn_t *pool, size_t size, char *text)
 	return basic_parse(&p);
 }
 
+#ifdef JSON_AUTO_PARSE_FN
 
 #define POOL_INCREASE_STEP (32)
 
@@ -431,3 +432,4 @@ jsn_t *json_auto_parse(char *text, char **end)
 	return p.pool;
 }
 
+#endif /* JSON_AUTO_PARSE */

stringify.c

@@ -8,6 +8,8 @@
 
 #include "nano/json.h"
 
+#ifdef JSON_STRINGIFY_FN
+
 /* ------------------------------------------------------------------------ */
 char *string_escape(char *p, char *e, char const *s)
 {
@@ -102,3 +104,5 @@ char *json_stringify(char *out, size_t size, jsn_t *root)
 		json_to_str(out, out + size - 1, root);
 	return out;
 }
+
+#endif /* JSON_STRINGIFY_FN */