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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 $
1.10 ! misho 6: * $Id: json.c,v 1.9.34.3 2024/10/27 03:57:34 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:
1.10 ! misho 15: Copyright 2004 - 2024
1.2 misho 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: }
1.8 misho 227: if (jstr[json->h_pos] < 32 || (u_char) jstr[json->h_pos] > 127) {
1.2 misho 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));
1.10 ! misho 430: if (AIT_GET_STR(v))
! 431: strncpy(AIT_GET_STR(v), json_tokstr(jstr, tok), AIT_LEN(v) - 1);
! 432: else
! 433: ait_freeVar(&v);
1.2 misho 434:
435: return v;
436: }
437:
438: /*
439: * json_token2str() - Return token to string
440: *
441: * @jstr = JSON string
442: * @tok = Token for convert
1.5 misho 443: * @return =NULL error or !=NULL allocated str, after use should be json_freestr()|e_free()
1.2 misho 444: */
445: char *
446: json_token2str(const char *jstr, jtok_t * __restrict tok)
447: {
1.8 misho 448: char *s, *s2, *wrk, *str = NULL;
1.2 misho 449: size_t len;
450:
451: if (!jstr || !tok)
452: return NULL;
453:
1.8 misho 454:
1.2 misho 455: len = json_toklen(tok);
456: str = e_malloc(len + 1);
457: if (!str)
458: return NULL;
459: else {
1.8 misho 460: memset(str, 0, len + 1);
461:
462: wrk = e_strdup(json_tokstr(jstr, tok));
463: wrk[len] = 0;
464: for (s = wrk, s2 = str; *s; s++)
465: *s2++ = (*s != '\\') ? *s : *++s;
466: e_free(wrk);
1.2 misho 467: }
468:
469: return str;
470: }
471:
472: /*
473: * json_token2num() - Return token to numeric
474: *
475: * @jstr = JSON string
476: * @tok = Token for convert
477: * @return number
478: */
479: long
480: json_token2num(const char *jstr, jtok_t * __restrict tok)
481: {
482: long ret = 0;
483: char *str;
484:
485: str = json_token2str(jstr, tok);
486: if (!str)
487: return 0;
488:
489: ret = strtol(str, NULL, 0);
490: e_free(str);
491: return ret;
492: }
493:
494: /*
1.5 misho 495: * json_token2dbl() - Return token to double
496: *
497: * @jstr = JSON string
498: * @tok = Token for convert
499: * @return number
500: */
501: double
502: json_token2dbl(const char *jstr, jtok_t * __restrict tok)
503: {
504: double ret = 0;
505: char *str;
506:
507: str = json_token2str(jstr, tok);
508: if (!str)
509: return 0;
510:
511: ret = strtod(str, NULL);
1.6 misho 512: e_free(str);
513: return ret;
514: }
515:
516: /*
517: * json_token2bool() - Return token to bool int
518: *
519: * @jstr = JSON string
520: * @tok = Token for convert
521: * @return 0 for FALSE and !=0 for TRUE
522: */
523: int
524: json_token2bool(const char *jstr, jtok_t * __restrict tok)
525: {
526: double ret = 0;
527: char *str;
528:
529: str = json_token2str(jstr, tok);
530: if (!str)
531: return 0;
532:
533: switch (*str) {
534: case 't':
535: case 'T':
536: ret = 1;
537: break;
538: case 'f':
539: case 'F':
540: ret = 0;
541: break;
542: default:
543: ret = (int) strtol(str, NULL, 10);
544: break;
545: }
1.5 misho 546: e_free(str);
547: return ret;
548: }
549:
550: /*
551: * json_findbykey() - Find token data by key
1.2 misho 552: *
553: * @jstr = JSON string
554: * @key = Search key
1.4 misho 555: * @type = Search key for particular token type, if is J_UNDEF this mean any type
1.2 misho 556: * @toks = Parsed tokens
557: * @toksnum = Number of parsed tokens
558: * return: =NULL error or !=NULL data token found
559: */
560: jtok_t *
1.4 misho 561: json_findbykey(const char *jstr, const char *key, jtype_t type, jtok_t * __restrict toks, int toksnum)
1.2 misho 562: {
563: jtok_t *tok = NULL;
564: register int i;
565: int klen;
566:
567: if (!jstr || !key || !toks)
568: return NULL;
569: else
570: klen = strlen(key);
571:
572: for (i = 1; i < toksnum; i++) {
1.9 misho 573: if (toks[i].tok_type == J_STRING && toks[i].tok_size == 1 &&
1.2 misho 574: klen == toks[i].tok_end - toks[i].tok_start &&
575: !strncmp(jstr + toks[i].tok_start, key, klen)) {
1.4 misho 576: if (type != J_UNDEF) {
577: if (toks[i + 1].tok_type == type) {
578: tok = toks + i + 1;
579: break;
580: }
581: } else {
582: tok = toks + i + 1;
583: break;
584: }
1.2 misho 585: }
586: }
587:
588: return tok;
589: }
590:
591: /*
1.5 misho 592: * json_findbypos() - Find token by position on JSON string
593: *
594: * @pos = Offset from begin of JSON string
595: * @toks = Parsed tokens
596: * @toksnum = Number of parsed tokens
597: * return: =NULL error or !=NULL token found
598: */
599: jtok_t *
600: json_findbypos(u_long pos, jtok_t * __restrict toks, int toksnum)
601: {
602: jtok_t *tok = NULL;
603: register int i;
604:
1.10 ! misho 605: if (!toks)
1.5 misho 606: return NULL;
607:
608: for (i = 1; i < toksnum; i++)
609: if (pos <= toks[i].tok_end && pos >= toks[i].tok_start) {
610: tok = toks + i;
611: break;
612: }
613:
614: return tok;
615: }
616:
617: /*
1.2 misho 618: * json_token2array() - Convert token to string array
619: *
620: * @jstr = JSON string
621: * @tok = Token for convert
622: * return: =NULL error or !=NULL allocated array with string variables,
623: * after use should be ait_freeVars()
624: */
625: array_t *
626: json_token2array(const char *jstr, jtok_t * __restrict tok)
627: {
628: array_t *arr = NULL;
1.5 misho 629: register int i, j;
1.2 misho 630: int siz;
631: ait_val_t *v;
632: jtok_t *t;
633:
634: if (!jstr || !tok)
635: return NULL;
636:
637: siz = tok->tok_size;
638: if (!siz && json_toktype(tok) != J_ARRAY && json_toktype(tok) != J_OBJECT)
639: siz++;
640:
641: arr = ait_allocVars(siz);
642: if (!arr)
643: return NULL;
644:
645: if (tok->tok_type == J_STRING || tok->tok_type == J_VALUE) {
646: v = ait_getVars(&arr, 0);
647: AIT_SET_STRSIZ(v, json_toklen(tok) + 1);
1.10 ! misho 648: if (AIT_GET_STR(v)) {
! 649: json_tokstrcpy(AIT_GET_STR(v), jstr, tok);
! 650: } else {
! 651: ait_freeVar(&v);
! 652: }
1.2 misho 653: } else if (tok->tok_type == J_ARRAY) {
1.5 misho 654: for (i = 0, j = 1; i < tok->tok_size; i++) {
655: t = &tok[i + j];
1.2 misho 656: v = ait_getVars(&arr, i);
657: AIT_SET_STRSIZ(v, json_toklen(t) + 1);
1.10 ! misho 658: if (AIT_GET_STR(v)) {
! 659: json_tokstrcpy(AIT_GET_STR(v), jstr, t);
! 660: } else {
! 661: ait_freeVar(&v);
! 662: }
1.5 misho 663:
664: /* if there we have array from objects should parse all object tokens */
665: while (i < tok->tok_size - 1 && tok->tok_idx != tok[i + j + 1].tok_parent)
666: j++;
1.2 misho 667: }
668: } else if (tok->tok_type == J_OBJECT) {
669: for (i = 0; tok->tok_idx <= tok[i + 1].tok_parent; i++) {
670: t = &tok[i + 1];
671: v = ait_getVars(&arr, i);
672: AIT_SET_STRSIZ(v, json_toklen(t) + 1);
1.10 ! misho 673: if (AIT_GET_STR(v)) {
! 674: json_tokstrcpy(AIT_GET_STR(v), jstr, t);
! 675: } else {
! 676: ait_freeVar(&v);
! 677: }
1.2 misho 678: }
679: } else {
680: elwix_SetErr(J_ERR_PARAM, "%s", jerrstr[J_ERR_PARAM]);
681: ait_freeVars(&arr);
682: return NULL;
683: }
684:
685: return arr;
686: }
687:
688:
689:
690: /*
691: * json_add_begin_object() - Adds begin of object {
692: *
693: * @jstr = JSON string
694: * @jlen = JSON string length
695: * @wspace = whitespace include
696: * return: -1 error or !=-1 actual JSON string length
697: */
698: int
699: json_add_begin_object(char * __restrict jstr, int jlen, int wspace)
700: {
701: int len;
702: size_t eos;
703:
704: if (!jstr)
705: return -1;
706: else
707: eos = strlen(jstr);
708:
709:
710: if (wspace)
711: len = strlcat(jstr, "{ ", jlen);
712: else
713: len = strlcat(jstr, "{", jlen);
714:
715: if (len >= jlen) {
716: elwix_SetErr(J_ERR_NOMEM, "%s", jerrstr[J_ERR_NOMEM]);
717: jstr[eos] = 0;
718: return -1;
719: }
720:
721: return len;
722: }
723:
724: /*
725: * json_add_end_object() - Adds end of object }
726: *
727: * @jstr = JSON string
728: * @jlen = JSON string length
729: * @wspace = whitespace include
730: * return: -1 error or !=-1 actual JSON string length
731: */
732: int
733: json_add_end_object(char * __restrict jstr, int jlen, int wspace)
734: {
735: int len;
736: size_t eos;
737:
738: if (!jstr)
739: return -1;
740: else
741: eos = strlen(jstr);
742:
743: if (wspace)
744: len = strlcat(jstr, " }", jlen);
745: else
746: len = strlcat(jstr, "}", jlen);
747:
748: if (len >= jlen) {
749: elwix_SetErr(J_ERR_NOMEM, "%s", jerrstr[J_ERR_NOMEM]);
750: jstr[eos] = 0;
751: return -1;
752: }
753:
754: return len;
755: }
756:
757: /*
758: * json_add_begin_array() - Adds begin of array [
759: *
760: * @jstr = JSON string
761: * @jlen = JSON string length
762: * @wspace = whitespace include
763: * return: -1 error or !=-1 actual JSON string length
764: */
765: int
766: json_add_begin_array(char * __restrict jstr, int jlen, int wspace)
767: {
768: int len;
769: size_t eos;
770:
771: if (!jstr)
772: return -1;
773: else
774: eos = strlen(jstr);
775:
776: if (wspace)
777: len = strlcat(jstr, "[ ", jlen);
778: else
779: len = strlcat(jstr, "[", jlen);
780:
781: if (len >= jlen) {
782: elwix_SetErr(J_ERR_NOMEM, "%s", jerrstr[J_ERR_NOMEM]);
783: jstr[eos] = 0;
784: return -1;
785: }
786:
787: return len;
788: }
789:
790: /*
791: * json_add_end_array() - Adds end of array ]
792: *
793: * @jstr = JSON string
794: * @jlen = JSON string length
795: * @wspace = whitespace include
796: * return: -1 error or !=-1 actual JSON string length
797: */
798: int
799: json_add_end_array(char * __restrict jstr, int jlen, int wspace)
800: {
801: int len;
802: size_t eos;
803:
804: if (!jstr)
805: return -1;
806: else
807: eos = strlen(jstr);
808:
809: if (wspace)
810: len = strlcat(jstr, " ]", jlen);
811: else
812: len = strlcat(jstr, "]", jlen);
813:
814: if (len >= jlen) {
815: elwix_SetErr(J_ERR_NOMEM, "%s", jerrstr[J_ERR_NOMEM]);
816: jstr[eos] = 0;
817: return -1;
818: }
819:
820: return len;
821: }
822:
823: /*
824: * json_add_char() - Adds character
825: *
826: * @jstr = JSON string
827: * @jlen = JSON string length
828: * @ch = Character
829: * return: -1 error or !=-1 actual JSON string length
830: */
831: int
832: json_add_char(char * __restrict jstr, int jlen, u_char ch)
833: {
834: int len;
835:
836: if (!jstr)
837: return -1;
838:
839: len = strlen(jstr) + 1;
840: if (len >= jlen) {
841: elwix_SetErr(J_ERR_NOMEM, "%s", jerrstr[J_ERR_NOMEM]);
842: return -1;
843: } else {
844: jstr[len++] = (char) ch;
845: jstr[len] = 0;
846: }
847:
848: return len;
849: }
850:
851: /*
852: * json_add_colon() - Adds key/value pair delimiter colon :
853: *
854: * @jstr = JSON string
855: * @jlen = JSON string length
856: * @wspace = whitespace include
857: * return: -1 error or !=-1 actual JSON string length
858: */
859: int
860: json_add_colon(char * __restrict jstr, int jlen, int wspace)
861: {
862: int len;
863: size_t eos;
864:
865: if (!jstr)
866: return -1;
867: else
868: eos = strlen(jstr);
869:
870: if (wspace)
871: len = strlcat(jstr, ": ", jlen);
872: else
873: len = strlcat(jstr, ":", jlen);
874:
875: if (len >= jlen) {
876: elwix_SetErr(J_ERR_NOMEM, "%s", jerrstr[J_ERR_NOMEM]);
877: jstr[eos] = 0;
878: return -1;
879: }
880:
881: return len;
882: }
883:
884: /*
885: * json_add_comma() - Adds value delimiter comma ,
886: *
887: * @jstr = JSON string
888: * @jlen = JSON string length
889: * @wspace = whitespace include
890: * return: -1 error or !=-1 actual JSON string length
891: */
892: int
893: json_add_comma(char * __restrict jstr, int jlen, int wspace)
894: {
895: int len;
896: size_t eos;
897:
898: if (!jstr)
899: return -1;
900: else
901: eos = strlen(jstr);
902:
903: if (wspace)
904: len = strlcat(jstr, ", ", jlen);
905: else
906: len = strlcat(jstr, ",", jlen);
907:
908: if (len >= jlen) {
909: elwix_SetErr(J_ERR_NOMEM, "%s", jerrstr[J_ERR_NOMEM]);
910: jstr[eos] = 0;
911: return -1;
912: }
913:
914: return len;
915: }
916:
917: /*
918: * json_add_string() - Adds string
919: *
920: * @jstr = JSON string
921: * @jlen = JSON string length
922: * @unquot = Unquoted string
923: * @str = String, it can't be NULL
924: * return: -1 error or !=-1 actual JSON string length
925: */
926: int
927: json_add_string(char * __restrict jstr, int jlen, int unquot, const char *str)
928: {
929: int len;
930: size_t eos;
931:
932: if (!jstr || !str)
933: return -1;
934: else
935: eos = strlen(jstr);
936:
937: if (!unquot) {
938: len = strlcat(jstr, "\"", jlen);
939: if (len >= jlen) {
940: elwix_SetErr(J_ERR_NOMEM, "%s", jerrstr[J_ERR_NOMEM]);
941: jstr[eos] = 0;
942: return -1;
943: }
944: }
945: len = strlcat(jstr, str, jlen);
946: if (len >= jlen) {
947: elwix_SetErr(J_ERR_NOMEM, "%s", jerrstr[J_ERR_NOMEM]);
948: jstr[eos] = 0;
949: return -1;
950: }
951: if (!unquot) {
952: len = strlcat(jstr, "\"", jlen);
953: if (len >= jlen) {
954: elwix_SetErr(J_ERR_NOMEM, "%s", jerrstr[J_ERR_NOMEM]);
955: jstr[eos] = 0;
956: return -1;
957: }
958: }
959:
960: return len;
961: }
962:
963: /*
964: * json_add_value() - Adds value
965: *
966: * @jstr = JSON string
967: * @jlen = JSON string length
968: * @unquot = Unquoted number
969: * @num = Number
970: * return: -1 error or !=-1 actual JSON string length
971: */
972: int
973: json_add_value(char * __restrict jstr, int jlen, int unquot, long num)
974: {
975: int len;
976: char wrk[STRSIZ] = { [0 ... STRSIZ - 1] = 0 };
977: size_t eos;
978:
979: if (!jstr)
980: return -1;
981: else
982: eos = strlen(jstr);
983:
984: if (!unquot) {
985: len = strlcat(jstr, "\"", jlen);
986: if (len >= jlen) {
987: elwix_SetErr(J_ERR_NOMEM, "%s", jerrstr[J_ERR_NOMEM]);
988: jstr[eos] = 0;
989: return -1;
990: }
991: }
992: snprintf(wrk, sizeof wrk, "%ld", num);
993: len = strlcat(jstr, wrk, jlen);
994: if (len >= jlen) {
995: elwix_SetErr(J_ERR_NOMEM, "%s", jerrstr[J_ERR_NOMEM]);
996: jstr[eos] = 0;
997: return -1;
998: }
999: if (!unquot) {
1000: len = strlcat(jstr, "\"", jlen);
1001: if (len >= jlen) {
1002: elwix_SetErr(J_ERR_NOMEM, "%s", jerrstr[J_ERR_NOMEM]);
1003: jstr[eos] = 0;
1004: return -1;
1005: }
1006: }
1007:
1008: return len;
1009: }
1010:
1011: /*
1012: * json_add_pair() - Adds key/value pair
1013: *
1014: * @jstr = JSON string
1015: * @jlen = JSON string length
1016: * @wspace = whitespace include
1017: * @key = Key string
1018: * @val = Value string
1019: * return: -1 error or !=-1 actual JSON string length
1020: */
1021: int
1022: json_add_pair(char * __restrict jstr, int jlen, int wspace, const char *key, const char *val)
1023: {
1024: int len = -1;
1025: size_t eos;
1026:
1027: if (!jstr || !key || !val)
1028: return -1;
1029: else
1030: eos = strlen(jstr);
1031:
1032: if (json_add_string(jstr, jlen, 0, key) == -1) {
1033: jstr[eos] = 0;
1034: return -1;
1035: }
1036: if (json_add_colon(jstr, jlen, wspace) == -1) {
1037: jstr[eos] = 0;
1038: return -1;
1039: }
1040: if ((len = json_add_string(jstr, jlen, 0, val)) == -1) {
1.7 misho 1041: jstr[eos] = 0;
1042: return -1;
1043: }
1044:
1045: return len;
1046: }
1047:
1048: /*
1049: * json_add_pair2() - Adds key/value pair with formated args
1050: *
1051: * @jstr = JSON string
1052: * @jlen = JSON string length
1053: * @wspace = whitespace include
1054: * @key = Key string
1055: * @fmt = Format string for values
1056: * return: -1 error or !=-1 actual JSON string length
1057: */
1058: int
1059: json_add_pair2(char * __restrict jstr, int jlen, int wspace, const char *key, const char *fmt, ...)
1060: {
1061: int len = -1;
1062: size_t eos;
1063: va_list lst;
1064: char szStr[BUFSIZ] = { [0 ... BUFSIZ - 1] = 0 };
1065:
1066: if (!jstr || !key || !fmt)
1067: return -1;
1068: else
1069: eos = strlen(jstr);
1070:
1071: if (json_add_string(jstr, jlen, 0, key) == -1) {
1072: jstr[eos] = 0;
1073: return -1;
1074: }
1075: if (json_add_colon(jstr, jlen, wspace) == -1) {
1076: jstr[eos] = 0;
1077: return -1;
1078: }
1079: va_start(lst, fmt);
1080: vsnprintf(szStr, sizeof szStr, fmt, lst);
1081: va_end(lst);
1082: if ((len = json_add_string(jstr, jlen, 0, szStr)) == -1) {
1.2 misho 1083: jstr[eos] = 0;
1084: return -1;
1085: }
1086:
1087: return len;
1088: }
1089:
1090: /*
1091: * json_add_array() - Adds array
1092: *
1093: * @jstr = JSON string
1094: * @jlen = JSON string length
1095: * @wspace = whitespace include
1096: * @arr = Array with variables
1097: * return: -1 error or !=-1 actual JSON string length
1098: */
1099: int
1100: json_add_array(char * __restrict jstr, int jlen, int wspace, array_t * __restrict arr)
1101: {
1102: int len = -1;
1103: register int i;
1104: ait_val_t *v;
1105: size_t eos;
1106:
1107: if (!jstr || !arr)
1108: return -1;
1109: else
1110: eos = strlen(jstr);
1111:
1112: if (json_add_begin_array(jstr, jlen, wspace) == -1) {
1113: jstr[eos] = 0;
1114: return -1;
1115: }
1116: for (i = 0; i < array_Size(arr); i++) {
1117: v = array(arr, i, ait_val_t*);
1118: if (v) {
1119: if (AIT_TYPE(v) == string) {
1120: if (json_add_string(jstr, jlen, 0, AIT_GET_STR(v)) == -1) {
1121: jstr[eos] = 0;
1122: return -1;
1123: }
1124: } else {
1125: if (json_add_value(jstr, jlen, 0, AIT_GET_LIKE(v, long)) == -1) {
1126: jstr[eos] = 0;
1127: return -1;
1128: }
1129: }
1130: if (i < array_Size(arr) - 1 && json_add_comma(jstr, jlen, wspace) == -1) {
1131: jstr[eos] = 0;
1132: return -1;
1133: }
1134: }
1135: }
1136: if ((len = json_add_end_array(jstr, jlen, wspace)) == -1) {
1137: jstr[eos] = 0;
1138: return -1;
1139: }
1140:
1141: return len;
1.3 misho 1142: }
1143:
1144: /*
1145: * json_dump_yaml() - Dump parsed JSON string to YAML format
1146: *
1147: * @f = Output handler
1148: * @jstr = JSON string
1149: * @toks = JSON tokens
1150: * @toksnum = Number of tokens
1151: * @indent = Start indent spaces
1152: * return: 0 done and 1 added one more item
1153: */
1154: int
1155: json_dump_yaml(FILE *f, const char *jstr, jtok_t *toks, int toksnum, int indent)
1156: {
1157: register int i, j, k;
1158:
1.10 ! misho 1159: if (!toksnum || !toks)
1.3 misho 1160: return 0;
1161:
1162: if (toks->tok_type == J_VALUE) {
1163: fprintf(f, "%.*s", (int) json_toklen(toks), json_tokstr(jstr, toks));
1164: return 1;
1165: } else if (toks->tok_type == J_STRING) {
1166: fprintf(f, "%.*s", (int) json_toklen(toks), json_tokstr(jstr, toks));
1167: return 1;
1168: } else if (toks->tok_type == J_OBJECT) {
1169: fprintf(f, "\n");
1170: for (j = i = 0; i < json_toksize(toks); i++) {
1171: for (k = 0; k < indent; k++)
1172: fprintf(f, " ");
1173: j += json_dump_yaml(f, jstr, toks + j + 1, toksnum - j, indent + 1);
1174: fprintf(f, ": ");
1175: j += json_dump_yaml(f, jstr, toks + j + 1, toksnum - j, indent + 1);
1176: fprintf(f, "\n");
1177: }
1178: return j + 1;
1179: } else if (toks->tok_type == J_ARRAY) {
1180: fprintf(f, "\n");
1181: for (j = i = 0; i < json_toksize(toks); i++) {
1182: for (k = 0; k < indent - 1; k++)
1183: fprintf(f, " ");
1184: fprintf(f, " - ");
1185: j += json_dump_yaml(f, jstr, toks + j + 1, toksnum - j, indent + 1);
1.5 misho 1186: fprintf(f, "\n");
1187: }
1188: return j + 1;
1189: }
1190:
1191: return 0;
1192: }
1193:
1194: /*
1195: * json_dump() - Dump parsed JSON string to structure format
1196: *
1197: * @f = Output handler
1198: * @jstr = JSON string
1199: * @toks = JSON tokens
1200: * @toksnum = Number of tokens
1201: * @indent = Start indent spaces
1202: * return: 0 done and 1 added one more item
1203: */
1204: int
1205: json_dump(FILE *f, const char *jstr, jtok_t *toks, int toksnum, int indent)
1206: {
1207: register int i, j, k;
1208:
1209: if (!toksnum)
1210: return 0;
1211:
1212: if (toks->tok_type == J_VALUE) {
1213: fprintf(f, "[idx=%ld type=VALUE start=%ld end=%ld size=%ld parent=%ld] = %.*s",
1214: toks->tok_idx, toks->tok_start, toks->tok_end, toks->tok_size, toks->tok_parent,
1215: (int) json_toklen(toks), json_tokstr(jstr, toks));
1216: return 1;
1217: } else if (toks->tok_type == J_STRING) {
1218: fprintf(f, "[idx=%ld type=STRING start=%ld end=%ld size=%ld parent=%ld] = %.*s",
1219: toks->tok_idx, toks->tok_start, toks->tok_end, toks->tok_size, toks->tok_parent,
1220: (int) json_toklen(toks), json_tokstr(jstr, toks));
1221: return 1;
1222: } else if (toks->tok_type == J_OBJECT) {
1223: fprintf(f, "\n");
1224: fprintf(f, "object:: [idx=%ld type=OBJECT start=%ld end=%ld size=%ld parent=%ld]\n",
1225: toks->tok_idx, toks->tok_start, toks->tok_end, toks->tok_size, toks->tok_parent);
1226: for (j = i = 0; i < json_toksize(toks); i++) {
1227: for (k = 0; k < indent; k++)
1228: fprintf(f, " ");
1229: j += json_dump(f, jstr, toks + j + 1, toksnum - j, indent + 1);
1230: fprintf(f, ": ");
1231: j += json_dump(f, jstr, toks + j + 1, toksnum - j, indent + 1);
1232: fprintf(f, "\n");
1233: }
1234: return j + 1;
1235: } else if (toks->tok_type == J_ARRAY) {
1236: fprintf(f, "\n");
1237: fprintf(f, "array[] [idx=%ld type=ARRAY start=%ld end=%ld size=%ld parent=%ld]",
1238: toks->tok_idx, toks->tok_start, toks->tok_end, toks->tok_size, toks->tok_parent);
1239: for (j = i = 0; i < json_toksize(toks); i++) {
1240: for (k = 0; k < indent - 1; k++)
1241: fprintf(f, " ");
1242: j += json_dump(f, jstr, toks + j + 1, toksnum - j, indent + 1);
1.3 misho 1243: fprintf(f, "\n");
1244: }
1245: return j + 1;
1246: }
1247:
1248: return 0;
1.2 misho 1249: }