--- libelwix/inc/elwix/ajson.h	2017/11/24 09:54:01	1.1.2.1
+++ libelwix/inc/elwix/ajson.h	2017/12/03 21:50:23	1.3
@@ -3,7 +3,7 @@
 *  by Michael Pounov <misho@elwix.org>
 *
 * $Author: misho $
-* $Id: ajson.h,v 1.1.2.1 2017/11/24 09:54:01 misho Exp $
+* $Id: ajson.h,v 1.3 2017/12/03 21:50:23 misho Exp $
 *
 **************************************************************************
 The ELWIX and AITNET software is distributed under the following
@@ -46,6 +46,246 @@ SUCH DAMAGE.
 #ifndef __AJSON_H
 #define __AJSON_H
 
+
+/* JSON type identifiers */
+typedef enum {
+	J_UNDEF = 0,
+	J_OBJECT = 1,
+	J_ARRAY = 2,
+	J_STRING = 3,
+	J_VALUE = 4
+} jtype_t;
+
+/* JSON error numbers */
+typedef enum {
+	J_ERR_OK = 0,
+	J_ERR_NOMEM = 1,
+	J_ERR_INVAL = 2,
+	J_ERR_PART = 3,
+	J_ERR_PARAM = 4
+} jerr_t;
+
+typedef struct _tagHandler {
+	unsigned long	h_pos;
+	unsigned long	h_next;
+	long		h_parent;
+	void		*h_alloc;
+	int		h_strict;
+} json_t;
+#define json_toksnum(x)		(x)->h_next
+
+typedef struct _tagToken {
+	long		tok_idx;
+	jtype_t		tok_type;
+	long		tok_start;
+	long		tok_end;
+	long		tok_size;
+	long		tok_parent;
+} jtok_t;
+#define json_toktype(x)		(x)->tok_type
+#define json_toksize(x)		(x)->tok_size
+#define json_toklen(x)		((x)->tok_end - (x)->tok_start)
+#define json_tokstr(j, x)	((j) + (x)->tok_start)
+#define json_tokstrcpy(d, j, x)	{ strncpy((d), json_tokstr((j), (x)), json_toklen(x)); \
+					(d)[json_toklen(x)] = 0; } 
+
+
+/*
+ * json_init() - Initialize JSON handler
+ *
+ * @json = JSON handler, if there is NULL then dynamically will be allocated
+ * @jstrict = JSON strict mode, when we select strict mode every unquoted value is error
+ * return: =NULL error or !=NULL ready for use JSON handler and should be free with json_free()
+ */
+json_t *json_init(json_t * __restrict json, int jstrict);
+
+/*
+ * json_free() - Free JSON handler
+ *
+ * @json = JSON handler
+ * return: none
+ */
+void json_free(json_t * __restrict json);
+
+/*
+ * json_parse() - Parse JSON string
+ *
+ * @json = JSON handler
+ * @jstr = JSON string
+ * @jlen = JSON string length
+ * @jtoks = Token array
+ * @toksnum = Token array size, return number of allocated tokens in array
+ * return: -1 error or number of found tokens 
+ */
+unsigned int json_parse(json_t * __restrict json, const char *jstr, size_t jlen, 
+		jtok_t * __restrict jtoks, unsigned int toksnum);
+
+/*
+ * json_token2val() - Return token to AIT variable
+ *
+ * @jstr = JSON string
+ * @tok = Token for convert
+ * @return =NULL error or !=NULL variable, after use should be ait_freeVar()
+ */
+ait_val_t *json_token2val(const char *jstr, jtok_t * __restrict tok);
+/*
+ * json_token2str() - Return token to string
+ *
+ * @jstr = JSON string
+ * @tok = Token for convert
+ * @return =NULL error or !=NULL allocated str, after use should be e_free()
+ */
+char *json_token2str(const char *jstr, jtok_t * __restrict tok);
+/*
+ * json_token2num() - Return token to numeric
+ *
+ * @jstr = JSON string
+ * @tok = Token for convert
+ * @return number
+ */
+long json_token2num(const char *jstr, jtok_t * __restrict tok);
+/*
+ * json_token2array() - Convert token to string array
+ *
+ * @jstr = JSON string
+ * @tok = Token for convert
+ * return: =NULL error or !=NULL allocated array with string variables, 
+ * 		after use should be ait_freeVars()
+ */
+array_t *json_token2array(const char *jstr, jtok_t * __restrict tok);
+
+/*
+ * json_findbykey() - Find data by key
+ *
+ * @jstr = JSON string
+ * @key = Search key
+ * @toks = Parsed tokens
+ * @toksnum = Number of parsed tokens
+ * return: =NULL error or !=NULL data token found 
+ */
+jtok_t *json_findbykey(const char *jstr, const char *key, 
+		jtok_t * __restrict toks, int toksnum);
+
+
+/*
+ * json_dump_yaml() - Dump parsed JSON string to YAML format
+ *
+ * @f = Output handler
+ * @jstr = JSON string
+ * @toks = JSON tokens
+ * @toksnum = Number of tokens
+ * @indent = Start indent spaces
+ * return: 0 done and 1 added one more item
+ */
+int json_dump_yaml(FILE *f, const char *jstr, jtok_t *toks, int toksnum, int indent);
+
+
+/*
+ * json_add_begin_object() - Adds begin of object {
+ *
+ * @jstr = JSON string
+ * @jlen = JSON string length
+ * @wspace = whitespace include
+ * return: -1 error or !=-1 actual JSON string length
+ */
+int json_add_begin_object(char * __restrict jstr, int jlen, int wspace);
+/*
+ * json_add_end_object() - Adds end of object }
+ *
+ * @jstr = JSON string
+ * @jlen = JSON string length
+ * @wspace = whitespace include
+ * return: -1 error or !=-1 actual JSON string length
+ */
+int json_add_end_object(char * __restrict jstr, int jlen, int wspace);
+/*
+ * json_add_begin_array() - Adds begin of array [
+ *
+ * @jstr = JSON string
+ * @jlen = JSON string length
+ * @wspace = whitespace include
+ * return: -1 error or !=-1 actual JSON string length
+ */
+int json_add_begin_array(char * __restrict jstr, int jlen, int wspace);
+/*
+ * json_add_end_array() - Adds end of array ]
+ *
+ * @jstr = JSON string
+ * @jlen = JSON string length
+ * @wspace = whitespace include
+ * return: -1 error or !=-1 actual JSON string length
+ */
+int json_add_end_array(char * __restrict jstr, int jlen, int wspace);
+/*
+ * json_add_char() - Adds character
+ *
+ * @jstr = JSON string
+ * @jlen = JSON string length
+ * @ch = Character
+ * return: -1 error or !=-1 actual JSON string length
+ */
+int json_add_char(char * __restrict jstr, int jlen, unsigned char ch);
+/*
+ * json_add_colon() - Adds key/value pair delimiter colon :
+ *
+ * @jstr = JSON string
+ * @jlen = JSON string length
+ * @wspace = whitespace include
+ * return: -1 error or !=-1 actual JSON string length
+ */
+int json_add_colon(char * __restrict jstr, int jlen, int wspace);
+/*
+ * json_add_comma() - Adds value delimiter comma ,
+ *
+ * @jstr = JSON string
+ * @jlen = JSON string length
+ * @wspace = whitespace include
+ * return: -1 error or !=-1 actual JSON string length
+ */
+int json_add_comma(char * __restrict jstr, int jlen, int wspace);
+/*
+ * json_add_string() - Adds string
+ *
+ * @jstr = JSON string
+ * @jlen = JSON string length
+ * @unquot = Unquoted string
+ * @str = String, it can't be NULL
+ * return: -1 error or !=-1 actual JSON string length
+ */
+int json_add_string(char * __restrict jstr, int jlen, int unquot, const char *str);
+/*
+ * json_add_value() - Adds value
+ *
+ * @jstr = JSON string
+ * @jlen = JSON string length
+ * @unquot = Unquoted number
+ * @num = Number
+ * return: -1 error or !=-1 actual JSON string length
+ */
+int json_add_value(char * __restrict jstr, int jlen, int unquot, long num);
+/*
+ * json_add_pair() - Adds key/value pair
+ *
+ * @jstr = JSON string
+ * @jlen = JSON string length
+ * @wspace = whitespace include
+ * @key = Key string
+ * @val = Value string
+ * return: -1 error or !=-1 actual JSON string length
+ */
+int json_add_pair(char * __restrict jstr, int jlen, int wspace, 
+		const char *key, const char *val);
+/*
+ * json_add_array() - Adds array
+ *
+ * @jstr = JSON string
+ * @jlen = JSON string length
+ * @wspace = whitespace include
+ * @arr = Array with variables
+ * return: -1 error or !=-1 actual JSON string length
+ */
+int json_add_array(char * __restrict jstr, int jlen, int wspace, 
+		array_t * __restrict arr);
 
 
 #endif