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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 $
1.1.2.9 ! misho 6: * $Id: json.c,v 1.1.2.8 2017/11/28 14:57:45 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: #include "global.h"
47:
48:
1.1.2.2 misho 49: /* JSON error strings */
50: const char *jerrstr[] = {
51: "No error",
52: "Not enough tokens were provided",
53: "Invalid character",
54: "JSON string isn't full",
55: "Invalid parameter",
56: NULL
57: };
58:
59:
60: /*
61: * json_init() - Initialize JSON handler
62: *
63: * @json = JSON handler, if there is NULL then dynamically will be allocated
64: * @jstrict = JSON strict mode, when we select strict mode every unquoted value is error
65: * return: =NULL error or !=NULL ready for use JSON handler and should be free with json_free()
66: */
67: json_t *
68: json_init(json_t * __restrict json, int jstrict)
69: {
70: json_t *j = json;
71:
72: if (!j) {
73: j = e_malloc(sizeof(json_t));
74: if (!j) {
75: LOGERR;
76: return NULL;
77: }
78: }
79:
80: memset(j, 0, sizeof(json_t));
81: j->h_parent = -1;
82: j->h_strict = jstrict;
83:
84: /* handler is dynamically allocated! */
85: if (!json)
86: j->h_alloc = j;
87:
88: return j;
89: }
90:
91: /*
92: * json_free() - Free JSON handler
93: *
94: * @json = JSON handler
95: * return: none
96: */
97: void
98: json_free(json_t * __restrict json)
99: {
100: if (json) {
101: if (json->h_alloc)
102: e_free(json);
103: else
104: memset(json, 0, sizeof(json_t));
105: }
106: }
107:
1.1.2.3 misho 108: static jtok_t *
109: json_gettoken(json_t * __restrict json, jtok_t * __restrict jtoks, u_int toksnum)
110: {
111: jtok_t *tok;
112:
113: assert(json || !(!jtoks && toksnum));
114:
115: if (json->h_next >= toksnum) {
116: elwix_SetErr(J_ERR_NOMEM, "%s", jerrstr[J_ERR_NOMEM]);
117: return NULL;
118: } else
1.1.2.6 misho 119: tok = &jtoks[json->h_next];
120: tok->tok_idx = json->h_next++;
1.1.2.3 misho 121: tok->tok_start = tok->tok_end = tok->tok_parent = -1;
122: tok->tok_size = 0;
123:
124: return tok;
125: }
126:
127: inline void
128: json_filltoken(jtok_t * __restrict tok, jtype_t type, long start, long end, long parent)
129: {
130: assert(tok);
131:
132: tok->tok_type = type;
133: tok->tok_start = start;
134: tok->tok_end = end;
135: tok->tok_parent = parent;
136: tok->tok_size = 0;
137: }
138:
139: static int
140: json_parse_string(json_t * __restrict json, const char *jstr, size_t jlen, jtok_t * __restrict jtoks, u_int toksnum)
141: {
142: jtok_t *tok;
143: u_long pos;
144: char ch;
145: register int i;
146:
147: assert(json || jstr || !(!jtoks && toksnum));
148:
149: for (pos = json->h_pos++; json->h_pos < jlen && jstr[json->h_pos]; json->h_pos++) {
150: ch = jstr[json->h_pos];
151:
152: if (ch == '\"') {
153: if (!jtoks)
154: return 0;
155: if (!(tok = json_gettoken(json, jtoks, toksnum))) {
156: json->h_pos = pos;
157: return -1;
158: } else
159: json_filltoken(tok, J_STRING, pos + 1, json->h_pos, json->h_parent);
160: return 0;
161: }
162:
163: if (ch == '\\' && json->h_pos + 1 < jlen) {
164: switch (jstr[++json->h_pos]) {
165: case '\"':
166: case '/':
167: case '\\':
168: case 'b':
169: case 'f':
170: case 'r':
171: case 'n':
172: case 't':
173: /* Allowed escaped symbols */
174: break;
175: case 'u':
176: /* Allows escaped symbol \uXXXX */
177: json->h_pos++;
178: for (i = 0; i < 4 && json->h_pos < jlen && jstr[json->h_pos]; i++, json->h_pos++) {
179: /* If it isn't a hex character we have an error */
180: if (!((jstr[json->h_pos] >= 48 && jstr[json->h_pos] <= 57) || /* 0-9 */
181: (jstr[json->h_pos] >= 65 && jstr[json->h_pos] <= 70) || /* A-F */
182: (jstr[json->h_pos] >= 97 && jstr[json->h_pos] <= 102))) { /* a-f */
183: json->h_pos = pos;
184: elwix_SetErr(J_ERR_INVAL, "%s", jerrstr[J_ERR_INVAL]);
185: return -1;
186: }
187: }
188: json->h_pos--;
189: break;
190: default:
191: /* Unexpected symbol */
192: json->h_pos = pos;
193: elwix_SetErr(J_ERR_INVAL, "%s", jerrstr[J_ERR_INVAL]);
194: return -1;
195: }
196: }
197: }
198:
199: json->h_pos = pos;
200: elwix_SetErr(J_ERR_PART, "%s", jerrstr[J_ERR_PART]);
201: return -1;
202: }
203:
204: static int
205: json_parse_value(json_t * __restrict json, const char *jstr, size_t jlen, jtok_t * __restrict jtoks, u_int toksnum)
206: {
207: jtok_t *tok;
208: u_long pos;
209:
210: assert(json || jstr || !(!jtoks && toksnum));
211:
212: for (pos = json->h_pos; json->h_pos < jlen && jstr[json->h_pos]; json->h_pos++) {
213: switch (jstr[json->h_pos]) {
214: case ':':
215: if (json->h_strict)
216: goto found;
217: break;
218: case '\t':
219: case '\r':
220: case '\n':
221: case ' ':
222: case ',':
223: case ']':
224: case '}':
225: goto found;
226: }
227: if (jstr[json->h_pos] < 32 || jstr[json->h_pos] > 127) {
228: json->h_pos = pos;
229: elwix_SetErr(J_ERR_INVAL, "%s", jerrstr[J_ERR_INVAL]);
230: return -1;
231: }
232: }
233:
234: if (json->h_strict) {
235: json->h_pos = pos;
236: elwix_SetErr(J_ERR_PART, "%s", jerrstr[J_ERR_PART]);
237: return -1;
238: }
239: found:
240: if (jtoks) {
241: if (!(tok = json_gettoken(json, jtoks, toksnum))) {
242: json->h_pos = pos;
243: return -1;
244: } else
245: json_filltoken(tok, J_VALUE, pos, json->h_pos, json->h_parent);
246: }
247:
248: json->h_pos--;
249: return 0;
250: }
251:
1.1.2.2 misho 252: /*
253: * json_parse() - Parse JSON string
254: *
255: * @json = JSON handler
256: * @jstr = JSON string
257: * @jlen = JSON string length
258: * @jtoks = Token array
259: * @toksnum = Token array size, return number of allocated tokens in array
260: * return: -1 error or number of found tokens
261: */
262: u_int
263: json_parse(json_t * __restrict json, const char *jstr, size_t jlen, jtok_t * __restrict jtoks, u_int toksnum)
264: {
265: register int i;
266: register u_int cx;
267: jtype_t type;
268: jtok_t *tok;
269: char ch;
270:
271: if (!json || !jstr || (!jtoks && toksnum)) {
272: elwix_SetErr(J_ERR_PARAM, "%s", jerrstr[J_ERR_PARAM]);
273: return (u_int) -1;
274: }
275:
276: for (cx = json->h_next; json->h_pos < jlen && jstr[json->h_pos]; json->h_pos++) {
277: switch ((ch = jstr[json->h_pos])) {
278: case '{':
279: case '[':
1.1.2.6 misho 280: cx++; /* start new object/array token */
1.1.2.2 misho 281: if (!jtoks)
282: break;
283:
284: tok = json_gettoken(json, jtoks, toksnum);
1.1.2.3 misho 285: if (!tok)
1.1.2.2 misho 286: return (u_int) -1;
287: if (json->h_parent != -1) {
288: jtoks[json->h_parent].tok_size++;
289: tok->tok_parent = json->h_parent;
290: }
291: tok->tok_type = (ch == '{' ? J_OBJECT : J_ARRAY);
292: tok->tok_start = json->h_pos;
293: json->h_parent = json->h_next - 1;
294: break;
295: case '}':
296: case ']':
297: if (!jtoks)
298: break;
299:
300: if (json->h_next < 1) {
301: elwix_SetErr(J_ERR_INVAL, "%s", jerrstr[J_ERR_INVAL]);
302: return (u_int) -1;
303: }
304:
305: type = (ch == '}' ? J_OBJECT : J_ARRAY);
306: tok = &jtoks[json->h_next - 1];
307: while (42) {
308: if (tok->tok_start != -1 && tok->tok_end == -1) {
309: if (tok->tok_type != type) {
310: elwix_SetErr(J_ERR_INVAL, "%s", jerrstr[J_ERR_INVAL]);
311: return (u_int) -1;
312: }
313: tok->tok_end = json->h_pos + 1;
314: json->h_parent = tok->tok_parent;
315: break;
316: }
317: if (tok->tok_parent == -1) {
318: if (tok->tok_type != type || json->h_parent == -1) {
319: elwix_SetErr(J_ERR_INVAL, "%s", jerrstr[J_ERR_INVAL]);
320: return (u_int) -1;
321: }
322: break;
323: }
324: tok = &jtoks[tok->tok_parent];
325: }
326: break;
327: case '\"':
1.1.2.8 misho 328: if (json_parse_string(json, jstr, jlen, jtoks, toksnum) == -1)
1.1.2.2 misho 329: return (u_int) -1;
1.1.2.6 misho 330: cx++; /* start new string token */
1.1.2.2 misho 331: if (jtoks && json->h_parent != -1)
332: jtoks[json->h_parent].tok_size++;
333: break;
334: case '\t':
335: case '\r':
336: case '\n':
337: case ' ':
338: /* whitespace, skip */
339: break;
340: case ':':
341: json->h_parent = json->h_next - 1;
342: break;
343: case ',':
344: if (jtoks && json->h_parent != -1 &&
345: jtoks[json->h_parent].tok_type != J_OBJECT &&
346: jtoks[json->h_parent].tok_type != J_ARRAY)
347: json->h_parent = jtoks[json->h_parent].tok_parent;
348: break;
349: case '-':
350: case '0':
351: case '1':
352: case '2':
353: case '3':
354: case '4':
355: case '5':
356: case '6':
357: case '7':
358: case '8':
359: case '9':
360: case 't':
361: case 'f':
362: case 'n':
1.1.2.3 misho 363: if (json->h_strict) {
364: if (jtoks && json->h_parent != -1) {
365: /* they must not be keys of the object */
366: if (jtoks[json->h_parent].tok_type == J_OBJECT ||
367: (jtoks[json->h_parent].tok_type == J_STRING &&
368: jtoks[json->h_parent].tok_size)) {
369: elwix_SetErr(J_ERR_INVAL, "%s", jerrstr[J_ERR_INVAL]);
370: return (u_int) -1;
371: }
372: }
1.1.2.2 misho 373:
1.1.2.3 misho 374: if (json_parse_value(json, jstr, jlen, jtoks, toksnum) == -1)
1.1.2.2 misho 375: return (u_int) -1;
1.1.2.6 misho 376: cx++; /* start new value token */
1.1.2.3 misho 377: if (jtoks && json->h_parent != -1)
378: jtoks[json->h_parent].tok_size++;
379: break;
1.1.2.2 misho 380: }
381: default:
382: if (json->h_strict) {
383: elwix_SetErr(J_ERR_INVAL, "%s", jerrstr[J_ERR_INVAL]);
384: return (u_int) -1;
385: }
386:
387: if (json_parse_value(json, jstr, jlen, jtoks, toksnum) == -1)
388: return (u_int) -1;
1.1.2.6 misho 389: cx++; /* start new value token */
1.1.2.2 misho 390: if (jtoks && json->h_parent != -1)
391: jtoks[json->h_parent].tok_size++;
392: break;
393: }
394: }
395:
396: if (jtoks) {
397: for (i = json->h_next - 1; i >= 0; i--) {
398: /* unmatched opened object or array */
399: if (jtoks[i].tok_start != -1 && jtoks[i].tok_end == -1) {
400: elwix_SetErr(J_ERR_PART, "%s", jerrstr[J_ERR_PART]);
401: return (u_int) -1;
402: }
403: }
1.1.2.6 misho 404: } else
405: cx++; /* increment needed tokens number for termination empty token */
1.1.2.2 misho 406:
407: return cx;
1.1.2.4 misho 408: }
409:
410: /*
411: * json_token2val() - Return token to AIT variable
412: *
413: * @jstr = JSON string
414: * @tok = Token for convert
415: * @return =NULL error or !=NULL allocated variable, after use should be ait_freeVar()
416: */
417: ait_val_t *
418: json_token2val(const char *jstr, jtok_t * __restrict tok)
419: {
420: ait_val_t *v = NULL;
421:
422: if (!jstr || !tok)
423: return NULL;
424:
425: v = ait_allocVar();
426: if (!v)
427: return NULL;
428:
1.1.2.7 misho 429: AIT_SET_STRSIZ(v, json_toklen(tok));
430: strncpy(AIT_GET_STR(v), json_tokstr(jstr, tok), AIT_LEN(v) - 1);
1.1.2.4 misho 431:
432: return v;
433: }
434:
435: /*
436: * json_token2str() - Return token to string
437: *
438: * @jstr = JSON string
439: * @tok = Token for convert
440: * @return =NULL error or !=NULL allocated str, after use should be e_free()
441: */
442: char *
443: json_token2str(const char *jstr, jtok_t * __restrict tok)
444: {
445: char *str = NULL;
446: size_t len;
447:
448: if (!jstr || !tok)
449: return NULL;
450:
1.1.2.7 misho 451: len = json_toklen(tok);
1.1.2.4 misho 452: str = e_malloc(len + 1);
453: if (!str)
454: return NULL;
455: else {
1.1.2.7 misho 456: strncpy(str, json_tokstr(jstr, tok), len);
1.1.2.4 misho 457: str[len] = 0;
458: }
459:
460: return str;
461: }
462:
463: /*
464: * json_token2num() - Return token to numeric
465: *
466: * @jstr = JSON string
467: * @tok = Token for convert
468: * @return number
469: */
470: long
471: json_token2num(const char *jstr, jtok_t * __restrict tok)
472: {
473: long ret = 0;
474: char *str;
475:
476: str = json_token2str(jstr, tok);
477: if (!str)
478: return 0;
479:
480: ret = strtol(str, NULL, 0);
481: e_free(str);
482: return ret;
483: }
484:
485: /*
486: * json_findbykey() - Find data by key
487: *
488: * @jstr = JSON string
489: * @key = Search key
490: * @toks = Parsed tokens
491: * @toksnum = Number of parsed tokens
492: * return: =NULL error or !=NULL data token found
493: */
494: jtok_t *
495: json_findbykey(const char *jstr, const char *key, jtok_t * __restrict toks, int toksnum)
496: {
497: jtok_t *tok = NULL;
498: register int i;
499: int klen;
500:
501: if (!jstr || !key || !toks)
502: return NULL;
503: else
504: klen = strlen(key);
505:
506: for (i = 1; i < toksnum; i++) {
507: if (toks[i].tok_type == J_STRING &&
508: klen == toks[i].tok_end - toks[i].tok_start &&
509: !strncmp(jstr + toks[i].tok_start, key, klen)) {
510: tok = toks + i + 1;
511: break;
512: }
513: }
514:
515: return tok;
516: }
517:
518: /*
1.1.2.6 misho 519: * json_token2array() - Convert token to string array
1.1.2.4 misho 520: *
521: * @jstr = JSON string
522: * @tok = Token for convert
1.1.2.6 misho 523: * return: =NULL error or !=NULL allocated array with string variables,
1.1.2.4 misho 524: * after use should be ait_freeVars()
525: */
526: array_t *
527: json_token2array(const char *jstr, jtok_t * __restrict tok)
528: {
529: array_t *arr = NULL;
530: register int i;
531: int siz;
532: ait_val_t *v;
533: jtok_t *t;
534:
535: if (!jstr || !tok)
536: return NULL;
537:
538: siz = tok->tok_size;
1.1.2.5 misho 539: if (!siz && json_toktype(tok) != J_ARRAY && json_toktype(tok) != J_OBJECT)
1.1.2.4 misho 540: siz++;
541:
542: arr = ait_allocVars(siz);
543: if (!arr)
544: return NULL;
545:
546: if (tok->tok_type == J_STRING || tok->tok_type == J_VALUE) {
547: v = ait_getVars(&arr, 0);
1.1.2.6 misho 548: AIT_SET_STRSIZ(v, json_toklen(tok) + 1);
1.1.2.5 misho 549: json_tokstrcpy(AIT_GET_STR(v), jstr, tok);
1.1.2.4 misho 550: } else if (tok->tok_type == J_ARRAY) {
551: for (i = 0; i < tok->tok_size; i++) {
552: t = &tok[i + 1];
553: v = ait_getVars(&arr, i);
1.1.2.6 misho 554: AIT_SET_STRSIZ(v, json_toklen(t) + 1);
555: json_tokstrcpy(AIT_GET_STR(v), jstr, t);
556: }
557: } else if (tok->tok_type == J_OBJECT) {
558: for (i = 0; tok->tok_idx <= tok[i + 1].tok_parent; i++) {
559: t = &tok[i + 1];
560: v = ait_getVars(&arr, i);
561: AIT_SET_STRSIZ(v, json_toklen(t) + 1);
1.1.2.5 misho 562: json_tokstrcpy(AIT_GET_STR(v), jstr, t);
1.1.2.4 misho 563: }
564: } else {
1.1.2.6 misho 565: elwix_SetErr(J_ERR_PARAM, "%s", jerrstr[J_ERR_PARAM]);
566: return NULL;
1.1.2.4 misho 567: }
568:
569: return arr;
1.1.2.9 ! misho 570: }
! 571:
! 572:
! 573: /*
! 574: * json_add_begin_object() - Adds begin of object {
! 575: *
! 576: * @jstr = JSON string
! 577: * @jlen = JSON string length
! 578: * @wspace = whitespace include
! 579: * return: -1 error or !=-1 actual JSON string length
! 580: */
! 581: int
! 582: json_add_begin_object(char * __restrict jstr, int jlen, int wspace)
! 583: {
! 584: int len;
! 585:
! 586: if (!jstr)
! 587: return -1;
! 588:
! 589: if (wspace)
! 590: len = strlcat(jstr, "{ ", jlen);
! 591: else
! 592: len = strlcat(jstr, "{", jlen);
! 593:
! 594: if (len >= jlen) {
! 595: elwix_SetErr(J_ERR_NOMEM, "%s", jerrstr[J_ERR_NOMEM]);
! 596: return -1;
! 597: }
! 598:
! 599: return len;
! 600: }
! 601:
! 602: /*
! 603: * json_add_end_object() - Adds end of object }
! 604: *
! 605: * @jstr = JSON string
! 606: * @jlen = JSON string length
! 607: * @wspace = whitespace include
! 608: * return: -1 error or !=-1 actual JSON string length
! 609: */
! 610: int
! 611: json_add_end_object(char * __restrict jstr, int jlen, int wspace)
! 612: {
! 613: int len;
! 614:
! 615: if (!jstr)
! 616: return -1;
! 617:
! 618: if (wspace)
! 619: len = strlcat(jstr, " }", jlen);
! 620: else
! 621: len = strlcat(jstr, "}", jlen);
! 622:
! 623: if (len >= jlen) {
! 624: elwix_SetErr(J_ERR_NOMEM, "%s", jerrstr[J_ERR_NOMEM]);
! 625: return -1;
! 626: }
! 627:
! 628: return len;
! 629: }
! 630:
! 631: /*
! 632: * json_add_begin_array() - Adds begin of array [
! 633: *
! 634: * @jstr = JSON string
! 635: * @jlen = JSON string length
! 636: * @wspace = whitespace include
! 637: * return: -1 error or !=-1 actual JSON string length
! 638: */
! 639: int
! 640: json_add_begin_array(char * __restrict jstr, int jlen, int wspace)
! 641: {
! 642: int len;
! 643:
! 644: if (!jstr)
! 645: return -1;
! 646:
! 647: if (wspace)
! 648: len = strlcat(jstr, "[ ", jlen);
! 649: else
! 650: len = strlcat(jstr, "[", jlen);
! 651:
! 652: if (len >= jlen) {
! 653: elwix_SetErr(J_ERR_NOMEM, "%s", jerrstr[J_ERR_NOMEM]);
! 654: return -1;
! 655: }
! 656:
! 657: return len;
! 658: }
! 659:
! 660: /*
! 661: * json_add_end_array() - Adds end of array ]
! 662: *
! 663: * @jstr = JSON string
! 664: * @jlen = JSON string length
! 665: * @wspace = whitespace include
! 666: * return: -1 error or !=-1 actual JSON string length
! 667: */
! 668: int
! 669: json_add_end_array(char * __restrict jstr, int jlen, int wspace)
! 670: {
! 671: int len;
! 672:
! 673: if (!jstr)
! 674: return -1;
! 675:
! 676: if (wspace)
! 677: len = strlcat(jstr, " ]", jlen);
! 678: else
! 679: len = strlcat(jstr, "]", jlen);
! 680:
! 681: if (len >= jlen) {
! 682: elwix_SetErr(J_ERR_NOMEM, "%s", jerrstr[J_ERR_NOMEM]);
! 683: return -1;
! 684: }
! 685:
! 686: return len;
! 687: }
! 688:
! 689: /*
! 690: * json_add_char() - Adds character
! 691: *
! 692: * @jstr = JSON string
! 693: * @jlen = JSON string length
! 694: * @ch = Character
! 695: * return: -1 error or !=-1 actual JSON string length
! 696: */
! 697: int
! 698: json_add_char(char * __restrict jstr, int jlen, u_char ch)
! 699: {
! 700: int len;
! 701:
! 702: if (!jstr)
! 703: return -1;
! 704:
! 705: len = strlen(jstr);
! 706: if (len >= jlen) {
! 707: elwix_SetErr(J_ERR_NOMEM, "%s", jerrstr[J_ERR_NOMEM]);
! 708: return -1;
! 709: } else {
! 710: jstr[len++] = (char) ch;
! 711: jstr[len] = 0;
! 712: }
! 713:
! 714: return len;
! 715: }
! 716:
! 717: /*
! 718: * json_add_colon() - Adds key/value pair delimiter colon :
! 719: *
! 720: * @jstr = JSON string
! 721: * @jlen = JSON string length
! 722: * @wspace = whitespace include
! 723: * return: -1 error or !=-1 actual JSON string length
! 724: */
! 725: int
! 726: json_add_colon(char * __restrict jstr, int jlen, int wspace)
! 727: {
! 728: int len;
! 729:
! 730: if (!jstr)
! 731: return -1;
! 732:
! 733: if (wspace)
! 734: len = strlcat(jstr, ": ", jlen);
! 735: else
! 736: len = strlcat(jstr, ":", jlen);
! 737:
! 738: if (len >= jlen) {
! 739: elwix_SetErr(J_ERR_NOMEM, "%s", jerrstr[J_ERR_NOMEM]);
! 740: return -1;
! 741: }
! 742:
! 743: return len;
! 744: }
! 745:
! 746: /*
! 747: * json_add_comma() - Adds value delimiter comma ,
! 748: *
! 749: * @jstr = JSON string
! 750: * @jlen = JSON string length
! 751: * @wspace = whitespace include
! 752: * return: -1 error or !=-1 actual JSON string length
! 753: */
! 754: int
! 755: json_add_comma(char * __restrict jstr, int jlen, int wspace)
! 756: {
! 757: int len;
! 758:
! 759: if (!jstr)
! 760: return -1;
! 761:
! 762: if (wspace)
! 763: len = strlcat(jstr, ", ", jlen);
! 764: else
! 765: len = strlcat(jstr, ",", jlen);
! 766:
! 767: if (len >= jlen) {
! 768: elwix_SetErr(J_ERR_NOMEM, "%s", jerrstr[J_ERR_NOMEM]);
! 769: return -1;
! 770: }
! 771:
! 772: return len;
! 773: }
! 774:
! 775: /*
! 776: * json_add_string() - Adds string
! 777: *
! 778: * @jstr = JSON string
! 779: * @jlen = JSON string length
! 780: * @unquot = Unquoted string
! 781: * @str = String, it can't be NULL
! 782: * return: -1 error or !=-1 actual JSON string length
! 783: */
! 784: int
! 785: json_add_string(char * __restrict jstr, int jlen, int unquot, const char *str)
! 786: {
! 787: int len;
! 788:
! 789: if (!jstr || !str)
! 790: return -1;
! 791:
! 792: if (!unquot)
! 793: len = strlcat(jstr, "\"", jlen);
! 794: len = strlcat(jstr, str, jlen);
! 795: if (!unquot)
! 796: len = strlcat(jstr, "\"", jlen);
! 797:
! 798: if (len >= jlen) {
! 799: elwix_SetErr(J_ERR_NOMEM, "%s", jerrstr[J_ERR_NOMEM]);
! 800: return -1;
! 801: }
! 802:
! 803: return len;
! 804: }
! 805:
! 806: /*
! 807: * json_add_value() - Adds value
! 808: *
! 809: * @jstr = JSON string
! 810: * @jlen = JSON string length
! 811: * @unquot = Unquoted number
! 812: * @num = Number
! 813: * return: -1 error or !=-1 actual JSON string length
! 814: */
! 815: int
! 816: json_add_value(char * __restrict jstr, int jlen, int unquot, long num)
! 817: {
! 818: int len;
! 819: char wrk[STRSIZ] = { [0 ... STRSIZ - 1] = 0 };
! 820:
! 821: if (!jstr)
! 822: return -1;
! 823:
! 824: if (!unquot)
! 825: len = strlcat(jstr, "\"", jlen);
! 826: snprintf(wrk, sizeof wrk, "%ld", num);
! 827: len = strlcat(jstr, wrk, jlen);
! 828: if (!unquot)
! 829: len = strlcat(jstr, "\"", jlen);
! 830:
! 831: if (len >= jlen) {
! 832: elwix_SetErr(J_ERR_NOMEM, "%s", jerrstr[J_ERR_NOMEM]);
! 833: return -1;
! 834: }
! 835:
! 836: return len;
! 837: }
! 838:
! 839: /*
! 840: * json_add_pair() - Adds key/value pair
! 841: *
! 842: * @jstr = JSON string
! 843: * @jlen = JSON string length
! 844: * @wspace = whitespace include
! 845: * @key = Key string
! 846: * @val = Value string
! 847: * return: -1 error or !=-1 actual JSON string length
! 848: */
! 849: int
! 850: json_add_pair(char * __restrict jstr, int jlen, int wspace, const char *key, const char *val)
! 851: {
! 852: int len = -1;
! 853:
! 854: if (!jstr || !key || !val)
! 855: return -1;
! 856:
! 857: if (json_add_string(jstr, jlen, 0, key) == -1)
! 858: return -1;
! 859: if (json_add_colon(jstr, jlen, wspace) == -1)
! 860: return -1;
! 861: if ((len = json_add_string(jstr, jlen, 0, key)) == -1)
! 862: return -1;
! 863:
! 864: return len;
! 865: }
! 866:
! 867: /*
! 868: * json_add_array() - Adds array
! 869: *
! 870: * @jstr = JSON string
! 871: * @jlen = JSON string length
! 872: * @wspace = whitespace include
! 873: * @arr = Array with variables
! 874: * return: -1 error or !=-1 actual JSON string length
! 875: */
! 876: int
! 877: json_add_array(char * __restrict jstr, int jlen, int wspace, array_t * __restrict arr)
! 878: {
! 879: int len = -1;
! 880: register int i;
! 881: ait_val_t *v;
! 882:
! 883: if (!jstr || !arr)
! 884: return -1;
! 885:
! 886: if (json_add_begin_array(jstr, jlen, wspace) == -1)
! 887: return -1;
! 888: for (i = 0; i < array_Size(arr); i++) {
! 889: v = array(arr, i, ait_val_t*);
! 890: if (v) {
! 891: if (AIT_TYPE(v) == string) {
! 892: if (json_add_string(jstr, jlen, 0, AIT_GET_STR(v)) == -1)
! 893: return -1;
! 894: } else {
! 895: if (json_add_value(jstr, jlen, 0, AIT_GET_LIKE(v, long)) == -1)
! 896: return -1;
! 897: }
! 898: if (i < array_Size(arr) - 1 && json_add_comma(jstr, jlen, wspace) == -1)
! 899: return -1;
! 900: }
! 901: }
! 902: if ((len = json_add_end_array(jstr, jlen, wspace)) == -1)
! 903: return -1;
! 904:
! 905: return len;
1.1.2.2 misho 906: }