Annotation of libelwix/inc/elwix/ajson.h, revision 1.1.2.6
1.1.2.1 misho 1: /*************************************************************************
2: * (C) 2017 AITNET ltd - Sofia/Bulgaria - <misho@aitnet.org>
3: * by Michael Pounov <misho@elwix.org>
4: *
5: * $Author: misho $
1.1.2.6 ! misho 6: * $Id: ajson.h,v 1.1.2.5 2017/11/28 00:46:53 misho Exp $
1.1.2.1 misho 7: *
8: **************************************************************************
9: The ELWIX and AITNET software is distributed under the following
10: terms:
11:
12: All of the documentation and software included in the ELWIX and AITNET
13: Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>
14:
15: Copyright 2004 - 2017
16: by Michael Pounov <misho@elwix.org>. All rights reserved.
17:
18: Redistribution and use in source and binary forms, with or without
19: modification, are permitted provided that the following conditions
20: are met:
21: 1. Redistributions of source code must retain the above copyright
22: notice, this list of conditions and the following disclaimer.
23: 2. Redistributions in binary form must reproduce the above copyright
24: notice, this list of conditions and the following disclaimer in the
25: documentation and/or other materials provided with the distribution.
26: 3. All advertising materials mentioning features or use of this software
27: must display the following acknowledgement:
28: This product includes software developed by Michael Pounov <misho@elwix.org>
29: ELWIX - Embedded LightWeight unIX and its contributors.
30: 4. Neither the name of AITNET nor the names of its contributors
31: may be used to endorse or promote products derived from this software
32: without specific prior written permission.
33:
34: THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND
35: ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
36: IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
37: ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
38: FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
39: DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
40: OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
41: HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
42: LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
43: OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
44: SUCH DAMAGE.
45: */
46: #ifndef __AJSON_H
47: #define __AJSON_H
48:
1.1.2.2 misho 49:
50: /* JSON type identifiers */
51: typedef enum {
52: J_UNDEF = 0,
53: J_OBJECT = 1,
54: J_ARRAY = 2,
55: J_STRING = 3,
1.1.2.4 misho 56: J_VALUE = 4
1.1.2.2 misho 57: } jtype_t;
58:
59: /* JSON error numbers */
60: typedef enum {
61: J_ERR_OK = 0,
62: J_ERR_NOMEM = 1,
63: J_ERR_INVAL = 2,
1.1.2.3 misho 64: J_ERR_PART = 3,
65: J_ERR_PARAM = 4
1.1.2.2 misho 66: } jerr_t;
67:
1.1.2.3 misho 68: typedef struct _tagHandler {
69: unsigned long h_pos;
70: unsigned long h_next;
71: long h_parent;
72: void *h_alloc;
73: int h_strict;
1.1.2.2 misho 74: } json_t;
1.1.2.6 ! misho 75: #define json_toksnum(x) (x)->h_next
1.1.2.2 misho 76:
77: typedef struct _tagToken {
78: jtype_t tok_type;
79: long tok_start;
80: long tok_end;
81: long tok_size;
82: long tok_parent;
83: } jtok_t;
1.1.2.6 ! misho 84: #define json_toktype(x) (x)->tok_type
! 85: #define json_toksize(x) (x)->tok_size
! 86: #define json_toklen(x) ((x)->tok_end - (x)->tok_start)
! 87: #define json_tokstr(j, x) ((j) + (x)->tok_start)
! 88: #define json_tokstrcpy(d, j, x) { strncpy((d), json_tokstr((j), (x)), json_toklen(x) - 1); \
! 89: (d)[json_toklen(x)] = 0; }
1.1.2.2 misho 90:
91:
92: /*
93: * json_init() - Initialize JSON handler
94: *
95: * @json = JSON handler, if there is NULL then dynamically will be allocated
1.1.2.3 misho 96: * @jstrict = JSON strict mode, when we select strict mode every unquoted value is error
97: * return: =NULL error or !=NULL ready for use JSON handler and should be free with json_free()
1.1.2.2 misho 98: */
1.1.2.3 misho 99: json_t *json_init(json_t * __restrict json, int jstrict);
1.1.2.2 misho 100:
101: /*
102: * json_free() - Free JSON handler
103: *
104: * @json = JSON handler
105: * return: none
106: */
1.1.2.3 misho 107: void json_free(json_t * __restrict json);
1.1.2.2 misho 108:
109: /*
110: * json_parse() - Parse JSON string
111: *
112: * @json = JSON handler
113: * @jstr = JSON string
114: * @jlen = JSON string length
115: * @jtoks = Token array
116: * @toksnum = Token array size, return number of allocated tokens in array
117: * return: -1 error or number of found tokens
118: */
119: unsigned int json_parse(json_t * __restrict json, const char *jstr, size_t jlen,
120: jtok_t * __restrict jtoks, unsigned int toksnum);
1.1.2.5 misho 121:
122: /*
123: * json_token2val() - Return token to AIT variable
124: *
125: * @jstr = JSON string
126: * @tok = Token for convert
127: * @return =NULL error or !=NULL variable, after use should be ait_freeVar()
128: */
129: ait_val_t *json_token2val(const char *jstr, jtok_t * __restrict tok);
130: /*
131: * json_token2str() - Return token to string
132: *
133: * @jstr = JSON string
134: * @tok = Token for convert
135: * @return =NULL error or !=NULL allocated str, after use should be e_free()
136: */
137: char *json_token2str(const char *jstr, jtok_t * __restrict tok);
138: /*
139: * json_token2num() - Return token to numeric
140: *
141: * @jstr = JSON string
142: * @tok = Token for convert
143: * @return number
144: */
145: long json_token2num(const char *jstr, jtok_t * __restrict tok);
146: /*
147: * json_token2array() - Convert token to array
148: *
149: * @jstr = JSON string
150: * @tok = Token for convert
151: * return: =NULL error or !=NULL allocated array with variables,
152: * after use should be ait_freeVars()
153: */
154: array_t *json_token2array(const char *jstr, jtok_t * __restrict tok);
155:
156: /*
157: * json_findbykey() - Find data by key
158: *
159: * @jstr = JSON string
160: * @key = Search key
161: * @toks = Parsed tokens
162: * @toksnum = Number of parsed tokens
163: * return: =NULL error or !=NULL data token found
164: */
165: jtok_t *json_findbykey(const char *jstr, const char *key,
166: jtok_t * __restrict toks, int toksnum);
1.1.2.1 misho 167:
168:
169: #endif
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