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1.2 misho 1: /*************************************************************************
2: * (C) 2017 AITNET ltd - Sofia/Bulgaria - <misho@aitnet.org>
3: * by Michael Pounov <misho@elwix.org>
4: *
5: * $Author: misho $
1.3 ! misho 6: * $Id: json.c,v 1.2.2.1 2017/12/03 20:01:42 misho Exp $
1.2 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:
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:
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
119: tok = &jtoks[json->h_next];
120: tok->tok_idx = json->h_next++;
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:
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 '[':
280: cx++; /* start new object/array token */
281: if (!jtoks)
282: break;
283:
284: tok = json_gettoken(json, jtoks, toksnum);
285: if (!tok)
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 '\"':
328: if (json_parse_string(json, jstr, jlen, jtoks, toksnum) == -1)
329: return (u_int) -1;
330: cx++; /* start new string token */
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':
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: }
373:
374: if (json_parse_value(json, jstr, jlen, jtoks, toksnum) == -1)
375: return (u_int) -1;
376: cx++; /* start new value token */
377: if (jtoks && json->h_parent != -1)
378: jtoks[json->h_parent].tok_size++;
379: break;
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;
389: cx++; /* start new value token */
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: }
404: } else
405: cx++; /* increment needed tokens number for termination empty token */
406:
407: return cx;
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:
429: AIT_SET_STRSIZ(v, json_toklen(tok));
430: strncpy(AIT_GET_STR(v), json_tokstr(jstr, tok), AIT_LEN(v) - 1);
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:
451: len = json_toklen(tok);
452: str = e_malloc(len + 1);
453: if (!str)
454: return NULL;
455: else {
456: strncpy(str, json_tokstr(jstr, tok), len);
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: /*
519: * json_token2array() - Convert token to string array
520: *
521: * @jstr = JSON string
522: * @tok = Token for convert
523: * return: =NULL error or !=NULL allocated array with string variables,
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;
539: if (!siz && json_toktype(tok) != J_ARRAY && json_toktype(tok) != J_OBJECT)
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);
548: AIT_SET_STRSIZ(v, json_toklen(tok) + 1);
549: json_tokstrcpy(AIT_GET_STR(v), jstr, tok);
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);
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);
562: json_tokstrcpy(AIT_GET_STR(v), jstr, t);
563: }
564: } else {
565: elwix_SetErr(J_ERR_PARAM, "%s", jerrstr[J_ERR_PARAM]);
566: ait_freeVars(&arr);
567: return NULL;
568: }
569:
570: return arr;
571: }
572:
573:
574:
575: /*
576: * json_add_begin_object() - Adds begin of object {
577: *
578: * @jstr = JSON string
579: * @jlen = JSON string length
580: * @wspace = whitespace include
581: * return: -1 error or !=-1 actual JSON string length
582: */
583: int
584: json_add_begin_object(char * __restrict jstr, int jlen, int wspace)
585: {
586: int len;
587: size_t eos;
588:
589: if (!jstr)
590: return -1;
591: else
592: eos = strlen(jstr);
593:
594:
595: if (wspace)
596: len = strlcat(jstr, "{ ", jlen);
597: else
598: len = strlcat(jstr, "{", jlen);
599:
600: if (len >= jlen) {
601: elwix_SetErr(J_ERR_NOMEM, "%s", jerrstr[J_ERR_NOMEM]);
602: jstr[eos] = 0;
603: return -1;
604: }
605:
606: return len;
607: }
608:
609: /*
610: * json_add_end_object() - Adds end of object }
611: *
612: * @jstr = JSON string
613: * @jlen = JSON string length
614: * @wspace = whitespace include
615: * return: -1 error or !=-1 actual JSON string length
616: */
617: int
618: json_add_end_object(char * __restrict jstr, int jlen, int wspace)
619: {
620: int len;
621: size_t eos;
622:
623: if (!jstr)
624: return -1;
625: else
626: eos = strlen(jstr);
627:
628: if (wspace)
629: len = strlcat(jstr, " }", jlen);
630: else
631: len = strlcat(jstr, "}", jlen);
632:
633: if (len >= jlen) {
634: elwix_SetErr(J_ERR_NOMEM, "%s", jerrstr[J_ERR_NOMEM]);
635: jstr[eos] = 0;
636: return -1;
637: }
638:
639: return len;
640: }
641:
642: /*
643: * json_add_begin_array() - Adds begin of array [
644: *
645: * @jstr = JSON string
646: * @jlen = JSON string length
647: * @wspace = whitespace include
648: * return: -1 error or !=-1 actual JSON string length
649: */
650: int
651: json_add_begin_array(char * __restrict jstr, int jlen, int wspace)
652: {
653: int len;
654: size_t eos;
655:
656: if (!jstr)
657: return -1;
658: else
659: eos = strlen(jstr);
660:
661: if (wspace)
662: len = strlcat(jstr, "[ ", jlen);
663: else
664: len = strlcat(jstr, "[", jlen);
665:
666: if (len >= jlen) {
667: elwix_SetErr(J_ERR_NOMEM, "%s", jerrstr[J_ERR_NOMEM]);
668: jstr[eos] = 0;
669: return -1;
670: }
671:
672: return len;
673: }
674:
675: /*
676: * json_add_end_array() - Adds end of array ]
677: *
678: * @jstr = JSON string
679: * @jlen = JSON string length
680: * @wspace = whitespace include
681: * return: -1 error or !=-1 actual JSON string length
682: */
683: int
684: json_add_end_array(char * __restrict jstr, int jlen, int wspace)
685: {
686: int len;
687: size_t eos;
688:
689: if (!jstr)
690: return -1;
691: else
692: eos = strlen(jstr);
693:
694: if (wspace)
695: len = strlcat(jstr, " ]", jlen);
696: else
697: len = strlcat(jstr, "]", jlen);
698:
699: if (len >= jlen) {
700: elwix_SetErr(J_ERR_NOMEM, "%s", jerrstr[J_ERR_NOMEM]);
701: jstr[eos] = 0;
702: return -1;
703: }
704:
705: return len;
706: }
707:
708: /*
709: * json_add_char() - Adds character
710: *
711: * @jstr = JSON string
712: * @jlen = JSON string length
713: * @ch = Character
714: * return: -1 error or !=-1 actual JSON string length
715: */
716: int
717: json_add_char(char * __restrict jstr, int jlen, u_char ch)
718: {
719: int len;
720:
721: if (!jstr)
722: return -1;
723:
724: len = strlen(jstr) + 1;
725: if (len >= jlen) {
726: elwix_SetErr(J_ERR_NOMEM, "%s", jerrstr[J_ERR_NOMEM]);
727: return -1;
728: } else {
729: jstr[len++] = (char) ch;
730: jstr[len] = 0;
731: }
732:
733: return len;
734: }
735:
736: /*
737: * json_add_colon() - Adds key/value pair delimiter colon :
738: *
739: * @jstr = JSON string
740: * @jlen = JSON string length
741: * @wspace = whitespace include
742: * return: -1 error or !=-1 actual JSON string length
743: */
744: int
745: json_add_colon(char * __restrict jstr, int jlen, int wspace)
746: {
747: int len;
748: size_t eos;
749:
750: if (!jstr)
751: return -1;
752: else
753: eos = strlen(jstr);
754:
755: if (wspace)
756: len = strlcat(jstr, ": ", jlen);
757: else
758: len = strlcat(jstr, ":", jlen);
759:
760: if (len >= jlen) {
761: elwix_SetErr(J_ERR_NOMEM, "%s", jerrstr[J_ERR_NOMEM]);
762: jstr[eos] = 0;
763: return -1;
764: }
765:
766: return len;
767: }
768:
769: /*
770: * json_add_comma() - Adds value delimiter comma ,
771: *
772: * @jstr = JSON string
773: * @jlen = JSON string length
774: * @wspace = whitespace include
775: * return: -1 error or !=-1 actual JSON string length
776: */
777: int
778: json_add_comma(char * __restrict jstr, int jlen, int wspace)
779: {
780: int len;
781: size_t eos;
782:
783: if (!jstr)
784: return -1;
785: else
786: eos = strlen(jstr);
787:
788: if (wspace)
789: len = strlcat(jstr, ", ", jlen);
790: else
791: len = strlcat(jstr, ",", jlen);
792:
793: if (len >= jlen) {
794: elwix_SetErr(J_ERR_NOMEM, "%s", jerrstr[J_ERR_NOMEM]);
795: jstr[eos] = 0;
796: return -1;
797: }
798:
799: return len;
800: }
801:
802: /*
803: * json_add_string() - Adds string
804: *
805: * @jstr = JSON string
806: * @jlen = JSON string length
807: * @unquot = Unquoted string
808: * @str = String, it can't be NULL
809: * return: -1 error or !=-1 actual JSON string length
810: */
811: int
812: json_add_string(char * __restrict jstr, int jlen, int unquot, const char *str)
813: {
814: int len;
815: size_t eos;
816:
817: if (!jstr || !str)
818: return -1;
819: else
820: eos = strlen(jstr);
821:
822: if (!unquot) {
823: len = strlcat(jstr, "\"", jlen);
824: if (len >= jlen) {
825: elwix_SetErr(J_ERR_NOMEM, "%s", jerrstr[J_ERR_NOMEM]);
826: jstr[eos] = 0;
827: return -1;
828: }
829: }
830: len = strlcat(jstr, str, jlen);
831: if (len >= jlen) {
832: elwix_SetErr(J_ERR_NOMEM, "%s", jerrstr[J_ERR_NOMEM]);
833: jstr[eos] = 0;
834: return -1;
835: }
836: if (!unquot) {
837: len = strlcat(jstr, "\"", jlen);
838: if (len >= jlen) {
839: elwix_SetErr(J_ERR_NOMEM, "%s", jerrstr[J_ERR_NOMEM]);
840: jstr[eos] = 0;
841: return -1;
842: }
843: }
844:
845: return len;
846: }
847:
848: /*
849: * json_add_value() - Adds value
850: *
851: * @jstr = JSON string
852: * @jlen = JSON string length
853: * @unquot = Unquoted number
854: * @num = Number
855: * return: -1 error or !=-1 actual JSON string length
856: */
857: int
858: json_add_value(char * __restrict jstr, int jlen, int unquot, long num)
859: {
860: int len;
861: char wrk[STRSIZ] = { [0 ... STRSIZ - 1] = 0 };
862: size_t eos;
863:
864: if (!jstr)
865: return -1;
866: else
867: eos = strlen(jstr);
868:
869: if (!unquot) {
870: len = strlcat(jstr, "\"", jlen);
871: if (len >= jlen) {
872: elwix_SetErr(J_ERR_NOMEM, "%s", jerrstr[J_ERR_NOMEM]);
873: jstr[eos] = 0;
874: return -1;
875: }
876: }
877: snprintf(wrk, sizeof wrk, "%ld", num);
878: len = strlcat(jstr, wrk, jlen);
879: if (len >= jlen) {
880: elwix_SetErr(J_ERR_NOMEM, "%s", jerrstr[J_ERR_NOMEM]);
881: jstr[eos] = 0;
882: return -1;
883: }
884: if (!unquot) {
885: len = strlcat(jstr, "\"", jlen);
886: if (len >= jlen) {
887: elwix_SetErr(J_ERR_NOMEM, "%s", jerrstr[J_ERR_NOMEM]);
888: jstr[eos] = 0;
889: return -1;
890: }
891: }
892:
893: return len;
894: }
895:
896: /*
897: * json_add_pair() - Adds key/value pair
898: *
899: * @jstr = JSON string
900: * @jlen = JSON string length
901: * @wspace = whitespace include
902: * @key = Key string
903: * @val = Value string
904: * return: -1 error or !=-1 actual JSON string length
905: */
906: int
907: json_add_pair(char * __restrict jstr, int jlen, int wspace, const char *key, const char *val)
908: {
909: int len = -1;
910: size_t eos;
911:
912: if (!jstr || !key || !val)
913: return -1;
914: else
915: eos = strlen(jstr);
916:
917: if (json_add_string(jstr, jlen, 0, key) == -1) {
918: jstr[eos] = 0;
919: return -1;
920: }
921: if (json_add_colon(jstr, jlen, wspace) == -1) {
922: jstr[eos] = 0;
923: return -1;
924: }
925: if ((len = json_add_string(jstr, jlen, 0, val)) == -1) {
926: jstr[eos] = 0;
927: return -1;
928: }
929:
930: return len;
931: }
932:
933: /*
934: * json_add_array() - Adds array
935: *
936: * @jstr = JSON string
937: * @jlen = JSON string length
938: * @wspace = whitespace include
939: * @arr = Array with variables
940: * return: -1 error or !=-1 actual JSON string length
941: */
942: int
943: json_add_array(char * __restrict jstr, int jlen, int wspace, array_t * __restrict arr)
944: {
945: int len = -1;
946: register int i;
947: ait_val_t *v;
948: size_t eos;
949:
950: if (!jstr || !arr)
951: return -1;
952: else
953: eos = strlen(jstr);
954:
955: if (json_add_begin_array(jstr, jlen, wspace) == -1) {
956: jstr[eos] = 0;
957: return -1;
958: }
959: for (i = 0; i < array_Size(arr); i++) {
960: v = array(arr, i, ait_val_t*);
961: if (v) {
962: if (AIT_TYPE(v) == string) {
963: if (json_add_string(jstr, jlen, 0, AIT_GET_STR(v)) == -1) {
964: jstr[eos] = 0;
965: return -1;
966: }
967: } else {
968: if (json_add_value(jstr, jlen, 0, AIT_GET_LIKE(v, long)) == -1) {
969: jstr[eos] = 0;
970: return -1;
971: }
972: }
973: if (i < array_Size(arr) - 1 && json_add_comma(jstr, jlen, wspace) == -1) {
974: jstr[eos] = 0;
975: return -1;
976: }
977: }
978: }
979: if ((len = json_add_end_array(jstr, jlen, wspace)) == -1) {
980: jstr[eos] = 0;
981: return -1;
982: }
983:
984: return len;
1.3 ! misho 985: }
! 986:
! 987: /*
! 988: * json_dump_yaml() - Dump parsed JSON string to YAML format
! 989: *
! 990: * @f = Output handler
! 991: * @jstr = JSON string
! 992: * @toks = JSON tokens
! 993: * @toksnum = Number of tokens
! 994: * @indent = Start indent spaces
! 995: * return: 0 done and 1 added one more item
! 996: */
! 997: int
! 998: json_dump_yaml(FILE *f, const char *jstr, jtok_t *toks, int toksnum, int indent)
! 999: {
! 1000: register int i, j, k;
! 1001:
! 1002: if (!toksnum)
! 1003: return 0;
! 1004:
! 1005: if (toks->tok_type == J_VALUE) {
! 1006: fprintf(f, "%.*s", (int) json_toklen(toks), json_tokstr(jstr, toks));
! 1007: return 1;
! 1008: } else if (toks->tok_type == J_STRING) {
! 1009: fprintf(f, "%.*s", (int) json_toklen(toks), json_tokstr(jstr, toks));
! 1010: return 1;
! 1011: } else if (toks->tok_type == J_OBJECT) {
! 1012: fprintf(f, "\n");
! 1013: for (j = i = 0; i < json_toksize(toks); i++) {
! 1014: for (k = 0; k < indent; k++)
! 1015: fprintf(f, " ");
! 1016: j += json_dump_yaml(f, jstr, toks + j + 1, toksnum - j, indent + 1);
! 1017: fprintf(f, ": ");
! 1018: j += json_dump_yaml(f, jstr, toks + j + 1, toksnum - j, indent + 1);
! 1019: fprintf(f, "\n");
! 1020: }
! 1021: return j + 1;
! 1022: } else if (toks->tok_type == J_ARRAY) {
! 1023: fprintf(f, "\n");
! 1024: for (j = i = 0; i < json_toksize(toks); i++) {
! 1025: for (k = 0; k < indent - 1; k++)
! 1026: fprintf(f, " ");
! 1027: fprintf(f, " - ");
! 1028: j += json_dump_yaml(f, jstr, toks + j + 1, toksnum - j, indent + 1);
! 1029: fprintf(f, "\n");
! 1030: }
! 1031: return j + 1;
! 1032: }
! 1033:
! 1034: return 0;
1.2 misho 1035: }