summaryrefslogtreecommitdiff
path: root/storage/connect/json.cpp
blob: c45630129f120d3a1032625f8eb82c97538a5296 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
/*************** json CPP Declares Source Code File (.H) ***************/
/*  Name: json.cpp   Version 1.2                                       */
/*                                                                     */
/*  (C) Copyright to the author Olivier BERTRAND          2014 - 2015  */
/*                                                                     */
/*  This file contains the JSON classes functions.                     */
/***********************************************************************/

/***********************************************************************/
/*  Include relevant sections of the MariaDB header file.              */
/***********************************************************************/
#include <my_global.h>

/***********************************************************************/
/*  Include application header files:                                  */
/*  global.h    is header containing all global declarations.          */
/*  plgdbsem.h  is header containing the DB application declarations.  */
/*  xjson.h     is header containing the JSON classes declarations.    */
/***********************************************************************/
#include "global.h"
#include "plgdbsem.h"
#include "json.h"

#define ARGS       MY_MIN(24,len-i),s+MY_MAX(i-3,0)

#if defined(__WIN__)
#define EL  "\r\n"
#else
#define EL  "\n"
#endif

/***********************************************************************/
/* Parse a json string.                                                */
/* Note: when pretty is not known, the caller set pretty to 3.         */
/***********************************************************************/
PJSON ParseJson(PGLOBAL g, char *s, int len, int *ptyp, bool *comma)
{
	int   i, rc, pretty = (ptyp) ? *ptyp : 3;
	bool  b = false, pty[3] = {true, true, true};
  PJSON jsp = NULL;
  STRG  src;

  if (!s || !len) {
    strcpy(g->Message, "Void JSON object");
    return NULL;
  } else if (comma)
    *comma = false;

  src.str = s;
  src.len = len;

	// Trying to guess the pretty format
	if (s[0] == '[' && (s[1] == '\n' || (s[1] == '\r' && s[2] == '\n')))
		pty[0] = false;

  // Save stack and allocation environment and prepare error return
  if (g->jump_level == MAX_JUMP) {
    strcpy(g->Message, MSG(TOO_MANY_JUMPS));
    return NULL;
    } // endif jump_level

  if ((rc= setjmp(g->jumper[++g->jump_level])) != 0) {
    goto err;
    } // endif rc

	for (i = 0; i < len; i++)
    switch (s[i]) {
      case '[':
        if (jsp)
					goto tryit;
        else if (!(jsp = ParseArray(g, ++i, src, pty)))
          goto err;

        break;
      case '{':
        if (jsp)
					goto tryit;
				else if (!(jsp = ParseObject(g, ++i, src, pty)))
          goto err;

        break;
      case ' ':
      case '\t':
      case '\n':
      case '\r':
        break;
      case ',':
        if (jsp && (pretty == 1 || pretty == 3)) {
          if (comma)
            *comma = true;

					pty[0] = pty[2] = false;
          break;
          } // endif pretty

        sprintf(g->Message, "Unexpected ',' (pretty=%d)", pretty);
        goto err;
      case '(':
        b = true;
        break;
      case ')':
        if (b) {
          b = false;
          break;
          } // endif b

      default:
				if (jsp)
					goto tryit;
				else if (!(jsp = ParseValue(g, i, src, pty)))
					goto err;

				break;
	}; // endswitch s[i]

	if (!jsp)
		sprintf(g->Message, "Invalid Json string '%.*s'", 50, s);
	else if (ptyp && pretty == 3) {
		*ptyp = 3;     // Not recognized pretty

		for (i = 0; i < 3; i++)
			if (pty[i]) {
				*ptyp = i;
				break;
			} // endif pty

	} // endif ptyp

  g->jump_level--;
  return jsp;

tryit:
	if (pty[0] && (!pretty || pretty > 2)) {
		if ((jsp = ParseArray(g, (i = 0), src, pty)) && ptyp && pretty == 3)
			*ptyp = (pty[0]) ? 0 : 3;

		g->jump_level--;
		return jsp;
	} else
		strcpy(g->Message, "More than one item in file");

err:
  g->jump_level--;
  return NULL;
} // end of ParseJson

/***********************************************************************/
/* Parse a JSON Array.                                                 */
/***********************************************************************/
PJAR ParseArray(PGLOBAL g, int& i, STRG& src, bool *pty)
{
  char  *s = src.str;
  int    len = src.len;
  int    level = 0;
	bool   b = (!i);
  PJAR   jarp = new(g) JARRAY;
  PJVAL  jvp = NULL;

  for (; i < len; i++)
    switch (s[i]) {
      case ',':
        if (level < 2) {
          sprintf(g->Message, "Unexpected ',' near %.*s",ARGS);
          return NULL;
        } else
          level = 1;

        break;
      case ']':
        if (level == 1) {
          sprintf(g->Message, "Unexpected ',]' near %.*s", ARGS);
          return NULL;
          } // endif level

        jarp->InitArray(g);
        return jarp;
			case '\n':
				if (!b)
					pty[0] = pty[1] = false;
			case '\r':
			case ' ':
      case '\t':
        break;
      default:
        if (level == 2) {
          sprintf(g->Message, "Unexpected value near %.*s", ARGS);
          return NULL;
        } else if ((jvp = ParseValue(g, i, src, pty)))
          jarp->AddValue(g, jvp);
        else
          return NULL;

        level = (b) ? 1 : 2;
        break;
    }; // endswitch s[i]

	if (b) {
		// Case of Pretty == 0
		jarp->InitArray(g);
		return jarp;
	} // endif b

  strcpy(g->Message, "Unexpected EOF in array");
  return NULL;
} // end of ParseArray

/***********************************************************************/
/* Parse a JSON Object.                                                */
/***********************************************************************/
PJOB ParseObject(PGLOBAL g, int& i, STRG& src, bool *pty)
{
  PSZ   key;
  char *s = src.str;
  int   len = src.len;
  int   level = 0;
  PJOB  jobp = new(g) JOBJECT;
  PJPR  jpp = NULL;

  for (; i < len; i++)
    switch (s[i]) {
      case '"':
        if (level < 2) {
          if ((key = ParseString(g, ++i, src))) {
            jpp = jobp->AddPair(g, key);
            level = 1;
          } else
            return NULL;

        } else {
          sprintf(g->Message, "misplaced string near %.*s", ARGS);
          return NULL;
        } // endif level

        break;
      case ':':
        if (level == 1) {
          if (!(jpp->Val = ParseValue(g, ++i, src, pty)))
            return NULL;

          level = 2;
        } else {
          sprintf(g->Message, "Unexpected ':' near %.*s", ARGS);
          return NULL;
        } // endif level

        break;
      case ',':
        if (level < 2) {
          sprintf(g->Message, "Unexpected ',' near %.*s", ARGS);
          return NULL;
        } else
          level = 1;

        break;
      case '}':
        if (level == 1) {
          sprintf(g->Message, "Unexpected '}' near %.*s", ARGS);
          return NULL;
          } // endif level

        return jobp;
			case '\n':
				pty[0] = pty[1] = false;
			case '\r':
			case ' ':
      case '\t':
        break;
      default:
        sprintf(g->Message, "Unexpected character '%c' near %.*s",
                s[i], ARGS);
        return NULL;
    }; // endswitch s[i]

  strcpy(g->Message, "Unexpected EOF in Object");
  return NULL;
} // end of ParseObject

/***********************************************************************/
/* Parse a JSON Value.                                                 */
/***********************************************************************/
PJVAL ParseValue(PGLOBAL g, int& i, STRG& src, bool *pty)
{
  char *strval, *s = src.str;
  int   n, len = src.len;
  PJVAL jvp = new(g) JVALUE;

  for (; i < len; i++)
    switch (s[i]) {
		case '\n':
			pty[0] = pty[1] = false;
		case '\r':
		case ' ':
      case '\t':
        break;
      default:
        goto suite;
    } // endswitch

 suite:
  switch (s[i]) {
    case '[':
      if (!(jvp->Jsp = ParseArray(g, ++i, src, pty)))
        return NULL;

      break;
    case '{':
      if (!(jvp->Jsp = ParseObject(g, ++i, src, pty)))
        return NULL;

      break;
    case '"':
      if ((strval = ParseString(g, ++i, src)))
        jvp->Value = AllocateValue(g, strval, TYPE_STRING);
      else
        return NULL;

      break;
    case 't':
      if (!strncmp(s + i, "true", 4)) {
        n = 1;
        jvp->Value = AllocateValue(g, &n, TYPE_TINY);
        i += 3;
      } else
        goto err;

      break;
    case 'f':
      if (!strncmp(s + i, "false", 5)) {
        n = 0;
        jvp->Value = AllocateValue(g, &n, TYPE_TINY);
        i += 4;
      } else
        goto err;

      break;
    case 'n':
      if (!strncmp(s + i, "null", 4))
        i += 3;
      else
        goto err;

      break;
    case '-':
    default:
      if (s[i] == '-' || isdigit(s[i])) {
        if (!(jvp->Value = ParseNumeric(g, i, src)))
          goto err;

      } else
        goto err;

    }; // endswitch s[i]

  return jvp;

err:
  sprintf(g->Message, "Unexpected character '%c' near %.*s",
          s[i], ARGS);
  return NULL;
} // end of ParseValue

/***********************************************************************/
/*  Unescape and parse a JSON string.                                  */
/***********************************************************************/
char *ParseString(PGLOBAL g, int& i, STRG& src)
{
  char  *s = src.str;
  uchar *p;
  int    n = 0, len = src.len;

  // Be sure of memory availability
  if (len + 1 - i > (signed)((PPOOLHEADER)g->Sarea)->FreeBlk) {
    strcpy(g->Message, "ParseString: Out of memory");
    return NULL;
    } // endif len

  // The size to allocate is not known yet
  p = (uchar*)PlugSubAlloc(g, NULL, 0);

  for (; i < len; i++)
    switch (s[i]) {
      case '"':
        p[n++] = 0;
        PlugSubAlloc(g, NULL, n);
        return (char*)p;
      case '\\':
        if (++i < len) {
          if (s[i] == 'u') {
            if (len - i > 5) {
//            if (charset == utf8) {
                char xs[5];
                uint hex;
            
                xs[0] = s[++i];
                xs[1] = s[++i];
                xs[2] = s[++i];
                xs[3] = s[++i];
                xs[4] = 0;
                hex = strtoul(xs, NULL, 16);
            
                if (hex < 0x80) {
                  p[n] = (uchar)hex;
                } else if (hex < 0x800) {
                  p[n++] = (uchar)(0xC0 | (hex >> 6));
                  p[n]   = (uchar)(0x80 | (hex & 0x3F));
                } else if (hex < 0x10000) {
                  p[n++] = (uchar)(0xE0 | (hex >> 12));
                  p[n++] = (uchar)(0x80 | ((hex >> 6) & 0x3f));
                  p[n]   = (uchar)(0x80 | (hex & 0x3f));
                } else
                  p[n] = '?';

#if 0
              } else {
                char xs[3];
                UINT hex;
            
                i += 2;
                xs[0] = s[++i];
                xs[1] = s[++i];
                xs[2] = 0;
                hex = strtoul(xs, NULL, 16);
                p[n] = (char)hex;
              } // endif charset
#endif // 0
            } else
              goto err;

          } else switch(s[i]) {
            case 't': p[n] = '\t'; break;
            case 'n': p[n] = '\n'; break;
            case 'r': p[n] = '\r'; break;
            case 'b': p[n] = '\b'; break;
            case 'f': p[n] = '\f'; break;
            default:  p[n] = s[i]; break;
            } // endswitch

          n++;
        } else
          goto err;

        break;
      default:
        p[n++] = s[i];
        break;
      }; // endswitch s[i]

 err:
  strcpy(g->Message, "Unexpected EOF in String");
  return NULL;
} // end of ParseString

/***********************************************************************/
/* Parse a JSON numeric value.                                         */
/***********************************************************************/
PVAL ParseNumeric(PGLOBAL g, int& i, STRG& src)
{
  char *s = src.str, buf[50];
  int   n = 0, len = src.len;
  short nd = 0;
	bool  has_dot = false;
	bool  has_e = false;
	bool  found_digit = false;
  PVAL  valp = NULL;

  for (; i < len; i++) {
    switch (s[i]) {
      case '.':
        if (!found_digit || has_dot || has_e)
          goto err;
        
        has_dot = true;
        break;
      case 'e':
      case 'E':
        if (!found_digit || has_e)
          goto err;

        has_e = true;
        found_digit = false;
        break;
      case '+':
        if (!has_e)
          goto err;

        // passthru
      case '-':
        if (found_digit)
          goto err;

        break;
      default:
        if (isdigit(s[i])) {
          if (has_dot && !has_e)
            nd++;       // Number of decimals

          found_digit = true;
        } else
          goto fin;

      }; // endswitch s[i]

    buf[n++] = s[i];
    } // endfor i

 fin:
  if (found_digit) {
    buf[n] = 0;

    if (has_dot || has_e) {
      double dv = strtod(buf, NULL);

      valp = AllocateValue(g, &dv, TYPE_DOUBLE, nd);
    } else {
      long long iv = strtoll(buf, NULL, 10);

      valp = AllocateValue(g, &iv, TYPE_BIGINT);
    } // endif has

    i--;  // Unstack  following character
    return valp;
  } else {
    strcpy(g->Message, "No digit found");
    return NULL;
  } // endif found_digit

 err:
  strcpy(g->Message, "Unexpected EOF in number");
  return NULL;
} // end of ParseNumeric

/***********************************************************************/
/* Serialize a JSON tree:                                              */
/***********************************************************************/
PSZ Serialize(PGLOBAL g, PJSON jsp, char *fn, int pretty)
{
	PSZ   str = NULL;
  bool  b = false, err = true;
  JOUT *jp;
	FILE *fs = NULL;

	g->Message[0] = 0;

	// Save stack and allocation environment and prepare error return
	if (g->jump_level == MAX_JUMP) {
		strcpy(g->Message, MSG(TOO_MANY_JUMPS));
		return NULL;
	} // endif jump_level

	if (setjmp(g->jumper[++g->jump_level])) {
		str = NULL;
		goto fin;
	} // endif jmp

	if (!jsp) {
    strcpy(g->Message, "Null json tree");
    goto fin;
  } else if (!fn) {
    // Serialize to a string
    jp = new(g) JOUTSTR(g);
    b = pretty == 1;
	} else {
		if (!(fs = fopen(fn, "wb"))) {
			sprintf(g->Message, MSG(OPEN_MODE_ERROR),
				"w", (int)errno, fn);
			strcat(strcat(g->Message, ": "), strerror(errno));
			goto fin;;
		} else if (pretty >= 2) {
			// Serialize to a pretty file
			jp = new(g)JOUTPRT(g, fs);
		} else {
			// Serialize to a flat file
			b = true;
			jp = new(g)JOUTFILE(g, fs, pretty);
		} // endif's

	}	// endif's

  switch (jsp->GetType()) {
    case TYPE_JAR:
      err = SerializeArray(jp, (PJAR)jsp, b);
      break;
    case TYPE_JOB:
      err = ((b && jp->Prty()) && jp->WriteChr('\t'));
      err |= SerializeObject(jp, (PJOB)jsp);
      break;
    case TYPE_JVAL:
      err = SerializeValue(jp, (PJVAL)jsp);
      break;
    default:
      strcpy(g->Message, "Invalid json tree");
    } // endswitch Type

  if (fs) {
		fputs(EL, fs);
    fclose(fs);
		str = (err) ? NULL : strcpy(g->Message, "Ok");
  } else if (!err) {
    str = ((JOUTSTR*)jp)->Strp;
    jp->WriteChr('\0');
    PlugSubAlloc(g, NULL, ((JOUTSTR*)jp)->N);
  } else {
    if (!g->Message[0])
      strcpy(g->Message, "Error in Serialize");

  } // endif's

fin:
	g->jump_level--;
	return str;
} // end of Serialize

/***********************************************************************/
/* Serialize a JSON Array.                                             */
/***********************************************************************/
bool SerializeArray(JOUT *js, PJAR jarp, bool b)
{
  bool first = true;

	if (b) {
		if (js->Prty()) {
			if (js->WriteChr('['))
				return true;
			else if (js->Prty() == 1 && (js->WriteStr(EL) || js->WriteChr('\t')))
				return true;

		} // endif Prty

	} else if (js->WriteChr('['))
		return true;

  for (int i = 0; i < jarp->size(); i++) {
    if (first)
      first = false;
		else if ((!b || js->Prty()) && js->WriteChr(','))
      return true;
		else if (b) {
			if (js->Prty() < 2 && js->WriteStr(EL))
				return true;
			else if (js->Prty() == 1 && js->WriteChr('\t'))
				return true;

		} // endif b

    if (SerializeValue(js, jarp->GetValue(i)))
      return true;

    } // endfor i

	if (b && js->Prty() == 1 && js->WriteStr(EL))
    return true;

	return ((!b || js->Prty()) && js->WriteChr(']'));
} // end of SerializeArray

/***********************************************************************/
/* Serialize a JSON Object.                                            */
/***********************************************************************/
bool SerializeObject(JOUT *js, PJOB jobp)
{
  bool first = true;

  if (js->WriteChr('{'))
    return true;

  for (PJPR pair = jobp->First; pair; pair = pair->Next) {
    if (first)
      first = false;
    else if (js->WriteChr(','))
      return true;

    if (js->WriteChr('"') ||
        js->WriteStr(pair->Key) ||
        js->WriteChr('"') ||
        js->WriteChr(':') ||
        SerializeValue(js, pair->Val))
      return true;

    } // endfor i

  return js->WriteChr('}');
} // end of SerializeObject

/***********************************************************************/
/* Serialize a JSON Value.                                             */
/***********************************************************************/
bool SerializeValue(JOUT *js, PJVAL jvp)
{
  PJAR jap;
  PJOB jop;
  PVAL valp;

  if ((jap = jvp->GetArray()))
    return SerializeArray(js, jap, false);
  else if ((jop = jvp->GetObject()))
    return SerializeObject(js, jop);
  else if (!(valp = jvp->Value) || valp->IsNull())
    return js->WriteStr("null");
  else switch (valp->GetType()) {
    case TYPE_TINY:
      return js->WriteStr(valp->GetTinyValue() ? "true" : "false");
    case TYPE_STRING:
      return js->Escape(valp->GetCharValue());
    default:
      if (valp->IsTypeNum()) {
        char buf[32];

        return js->WriteStr(valp->GetCharString(buf));
        } // endif valp

    } // endswitch Type

	strcpy(js->g->Message, "Unrecognized value");
	return true;
} // end of SerializeValue

/* -------------------------- Class JOUTSTR -------------------------- */

/***********************************************************************/
/* JOUTSTR constructor.                                                */
/***********************************************************************/
JOUTSTR::JOUTSTR(PGLOBAL g) : JOUT(g)
{
  PPOOLHEADER pph = (PPOOLHEADER)g->Sarea;

  N = 0;
  Max = pph->FreeBlk;
  Max = (Max > 32) ? Max - 32 : Max;
  Strp = (char*)PlugSubAlloc(g, NULL, 0);  // Size not know yet
} // end of JOUTSTR constructor

/***********************************************************************/
/* Concatenate a string to the Serialize string.                       */
/***********************************************************************/
bool JOUTSTR::WriteStr(const char *s)
{
  if (s) {
    size_t len = strlen(s);

    if (N + len > Max)
      return true;

    memcpy(Strp + N, s, len);
    N += len;
    return false;
  } else
    return true;

} // end of WriteStr

/***********************************************************************/
/* Concatenate a character to the Serialize string.                    */
/***********************************************************************/
bool JOUTSTR::WriteChr(const char c)
{
  if (N + 1 > Max)
    return true;

  Strp[N++] = c;
  return false;
} // end of WriteChr

/***********************************************************************/
/* Escape and Concatenate a string to the Serialize string.            */
/***********************************************************************/
bool JOUTSTR::Escape(const char *s)
{
  WriteChr('"');

  for (unsigned int i = 0; s[i]; i++)
    switch (s[i]) {
      case '"':  
      case '\\':
      case '\t':
      case '\n':
      case '\r':
      case '\b':
      case '\f': WriteChr('\\');
        // passthru
      default:
        WriteChr(s[i]);
        break;
      } // endswitch s[i]

  WriteChr('"');
  return false;
} // end of Escape

/* ------------------------- Class JOUTFILE -------------------------- */

/***********************************************************************/
/* Write a string to the Serialize file.                               */
/***********************************************************************/
bool JOUTFILE::WriteStr(const char *s)
{
  // This is temporary
  fputs(s, Stream);
  return false;
} // end of WriteStr

/***********************************************************************/
/* Write a character to the Serialize file.                            */
/***********************************************************************/
bool JOUTFILE::WriteChr(const char c)
{
  // This is temporary
  fputc(c, Stream);
  return false;
} // end of WriteChr

/***********************************************************************/
/* Escape and Concatenate a string to the Serialize string.            */
/***********************************************************************/
bool JOUTFILE::Escape(const char *s)
{
  // This is temporary
  fputc('"', Stream);

  for (unsigned int i = 0; s[i]; i++)
    switch (s[i]) {
      case '"':  fputs("\\\"", Stream); break;
      case '\\': fputs("\\\\", Stream); break;
      case '\t': fputs("\\t",  Stream); break;
      case '\n': fputs("\\n",  Stream); break;
      case '\r': fputs("\\r",  Stream); break;
      case '\b': fputs("\\b",  Stream); break;
      case '\f': fputs("\\f",  Stream); break;
      default:
        fputc(s[i], Stream);
        break;
      } // endswitch s[i]

  fputc('"', Stream);
  return false;
} // end of Escape

/* ------------------------- Class JOUTPRT --------------------------- */

/***********************************************************************/
/* Write a string to the Serialize pretty file.                        */
/***********************************************************************/
bool JOUTPRT::WriteStr(const char *s)
{
  // This is temporary
  if (B) {
    fputs(EL, Stream);
    M--;

    for (int i = 0; i < M; i++)
      fputc('\t', Stream);

    B = false;
    } // endif B

  fputs(s, Stream);
  return false;
} // end of WriteStr

/***********************************************************************/
/* Write a character to the Serialize pretty file.                     */
/***********************************************************************/
bool JOUTPRT::WriteChr(const char c)
{
  switch (c) {
    case ':':
      fputs(": ", Stream);
      break;
    case '{':
    case '[':
#if 0
      if (M)
        fputs(EL, Stream);

      for (int i = 0; i < M; i++)
        fputc('\t', Stream);
#endif // 0

      fputc(c, Stream);
      fputs(EL, Stream);
      M++;

      for (int i = 0; i < M; i++)
        fputc('\t', Stream);

      break;
    case '}':
    case ']':
      M--;
      fputs(EL, Stream);

      for (int i = 0; i < M; i++)
        fputc('\t', Stream);

      fputc(c, Stream);
      B = true;
      break;
    case ',':
      fputc(c, Stream);
      fputs(EL, Stream);

      for (int i = 0; i < M; i++)
        fputc('\t', Stream);

      B = false;
      break;
    default:
      fputc(c, Stream);
    } // endswitch c

return false;
} // end of WriteChr

/* -------------------------- Class JOBJECT -------------------------- */

/***********************************************************************/
/* Add a new pair to an Object.                                        */
/***********************************************************************/
PJPR JOBJECT::AddPair(PGLOBAL g, PSZ key)
{
  PJPR jpp = new(g) JPAIR(key);

  if (Last)
    Last->Next = jpp;
  else
    First = jpp;

  Last = jpp;
  Size++;
  return jpp;
} // end of AddPair

/***********************************************************************/
/* Return all keys as an array.                                        */
/***********************************************************************/
PJAR JOBJECT::GetKeyList(PGLOBAL g)
{
	PJAR jarp = new(g) JARRAY();

	for (PJPR jpp = First; jpp; jpp = jpp->Next)
		jarp->AddValue(g, new(g) JVALUE(g, jpp->GetKey()));

	jarp->InitArray(g);
	return jarp;
} // end of GetKeyList

/***********************************************************************/
/* Get the value corresponding to the given key.                       */
/***********************************************************************/
PJVAL JOBJECT::GetValue(const char* key)
{
  for (PJPR jp = First; jp; jp = jp->Next)
    if (!strcmp(jp->Key, key))
      return jp->Val;

  return NULL;
} // end of GetValue;

/***********************************************************************/
/* Return the text corresponding to all keys (XML like).               */
/***********************************************************************/
PSZ JOBJECT::GetText(PGLOBAL g, PSZ text)
{
  int n;

  if (!text) {
    text = (char*)PlugSubAlloc(g, NULL, 0);
    text[0] = 0;
    n = 1;
  } else
    n = 0;

  if (!First && n)
    return NULL;
  else for (PJPR jp = First; jp; jp = jp->Next)
    jp->Val->GetText(g, text);

  if (n)
    PlugSubAlloc(g, NULL, strlen(text) + 1);

  return text + n;
} // end of GetValue;

/***********************************************************************/
/* Merge two objects.                                                  */
/***********************************************************************/
bool JOBJECT::Merge(PGLOBAL g, PJSON jsp)
{
	if (jsp->GetType() != TYPE_JOB) {
		strcpy(g->Message, "Second argument is not an object");
		return true;
	}	// endif Type

	PJOB jobp = (PJOB)jsp;

	for (PJPR jpp = jobp->First; jpp; jpp = jpp->Next)
		SetValue(g, jpp->GetVal(), jpp->GetKey());

	return false;
} // end of Marge;

/***********************************************************************/
/* Set or add a value corresponding to the given key.                  */
/***********************************************************************/
void JOBJECT::SetValue(PGLOBAL g, PJVAL jvp, PSZ key)
{
	PJPR jp;

  for (jp = First; jp; jp = jp->Next)
    if (!strcmp(jp->Key, key)) {
      jp->Val = jvp;
      break;
      } // endif key

  if (!jp) {
    jp = AddPair(g, key);
    jp->Val = jvp;
    } // endif jp

} // end of SetValue

/***********************************************************************/
/* Delete a value corresponding to the given key.                  */
/***********************************************************************/
void JOBJECT::DeleteKey(PSZ key)
{
	PJPR jp, *pjp = &First;

	for (jp = First; jp; jp = jp->Next)
		if (!strcmp(jp->Key, key)) {
			*pjp = jp->Next;
			Size--;
			break;
		} else
			pjp = &jp->Next;

} // end of DeleteKey

/***********************************************************************/
/* True if void or if all members are nulls.                           */
/***********************************************************************/
bool JOBJECT::IsNull(void)
{
  for (PJPR jp = First; jp; jp = jp->Next)
    if (!jp->Val->IsNull())
      return false;

  return true;
} // end of IsNull

/* -------------------------- Class JARRAY --------------------------- */

/***********************************************************************/
/* Make the array of values from the values list.                      */
/***********************************************************************/
void JARRAY::InitArray(PGLOBAL g)
{
  int   i;
  PJVAL jvp, *pjvp = &First;

  for (Size = 0, jvp = First; jvp; jvp = jvp->Next) 
    if (!jvp->Del)
      Size++;

  if (Size > Alloc) {
    // No need to realloc after deleting values
    Mvals = (PJVAL*)PlugSubAlloc(g, NULL, Size * sizeof(PJVAL));
    Alloc = Size;
  } // endif Size

  for (i = 0, jvp = First; jvp; jvp = jvp->Next)
		if (!jvp->Del) {
			Mvals[i++] = jvp;
			pjvp = &jvp->Next;
			Last = jvp;
		} else
			*pjvp = jvp->Next;

} // end of InitArray

/***********************************************************************/
/* Get the Nth value of an Array.                                      */
/***********************************************************************/
PJVAL JARRAY::GetValue(int i)
{
  if (Mvals && i >= 0 && i < Size)
    return Mvals[i];
  else
    return NULL;
} // end of GetValue

/***********************************************************************/
/* Add a Value to the Array Value list.                                */
/***********************************************************************/
PJVAL JARRAY::AddValue(PGLOBAL g, PJVAL jvp, int *x)
{
  if (!jvp)
    jvp = new(g) JVALUE;

	if (x) {
		int   i = 0, n = *x;
		PJVAL jp, *jpp = &First;

		for (jp = First; jp && i < n; i++, jp = *(jpp = &jp->Next));

		(*jpp) = jvp;

		if (!(jvp->Next = jp))
			Last = jvp;

	} else {
		if (!First)
			First = jvp;
		else if (Last == First)
			First->Next = Last = jvp;
		else
			Last->Next = jvp;

		Last = jvp;
	} // endif x

  return jvp;
} // end of AddValue

/***********************************************************************/
/* Merge two arrays.                                                   */
/***********************************************************************/
bool JARRAY::Merge(PGLOBAL g, PJSON jsp)
{
	if (jsp->GetType() != TYPE_JAR) {
		strcpy(g->Message, "Second argument is not an array");
		return true;
	}	// endif Type

	PJAR arp = (PJAR)jsp;

	for (int i = 0; i < jsp->size(); i++)
		AddValue(g, arp->GetValue(i));

	InitArray(g);
	return false;
} // end of Merge

/***********************************************************************/
/* Set the nth Value of the Array Value list.                          */
/***********************************************************************/
bool JARRAY::SetValue(PGLOBAL g, PJVAL jvp, int n)
{
  int   i = 0;
  PJVAL jp, *jpp = &First;

  for (jp = First; i < n; i++, jp = *(jpp = &jp->Next))
    if (!jp)
      *jpp = jp = new(g) JVALUE;

  *jpp = jvp;
  jvp->Next = (jp ? jp->Next : NULL);
  return false;
} // end of SetValue

/***********************************************************************/
/* Delete a Value from the Arrays Value list.                          */
/***********************************************************************/
bool JARRAY::DeleteValue(int n)
{
  PJVAL jvp = GetValue(n);

  if (jvp) {
    jvp->Del = true;
    return false;
  } else
    return true;

} // end of DeleteValue

/***********************************************************************/
/* True if void or if all members are nulls.                           */
/***********************************************************************/
bool JARRAY::IsNull(void)
{
  for (int i = 0; i < Size; i++)
    if (!Mvals[i]->IsNull())
      return false;

  return true;
} // end of IsNull

/* -------------------------- Class JVALUE- -------------------------- */

/***********************************************************************/
/* Constructor for a Value with a given string or numeric value.       */
/***********************************************************************/
JVALUE::JVALUE(PGLOBAL g, PVAL valp) : JSON()
{
  Jsp = NULL; 
  Value = AllocateValue(g, valp); 
  Next = NULL;
  Del = false;
} // end of JVALUE constructor

/***********************************************************************/
/* Constructor for a given string.                                     */
/***********************************************************************/
JVALUE::JVALUE(PGLOBAL g, PSZ strp) : JSON()
{
	Jsp = NULL;
	Value = AllocateValue(g, strp, TYPE_STRING);
	Next = NULL;
	Del = false;
} // end of JVALUE constructor

/***********************************************************************/
/* Returns the type of the Value's value.                              */
/***********************************************************************/
JTYP JVALUE::GetValType(void)
{
  if (Jsp)
    return Jsp->GetType();
  else if (Value)
    return (JTYP)Value->GetType();
  else
    return (JTYP)TYPE_VOID;

} // end of GetValType

/***********************************************************************/
/* Return the Value's Object value.                                    */
/***********************************************************************/
PJOB JVALUE::GetObject(void)
{
  if (Jsp && Jsp->GetType() == TYPE_JOB)
    return (PJOB)Jsp;

  return NULL;
} // end of GetObject

/***********************************************************************/
/* Return the Value's Array value.                                     */
/***********************************************************************/
PJAR JVALUE::GetArray(void)
{
  if (Jsp && Jsp->GetType() == TYPE_JAR)
    return (PJAR)Jsp;

  return NULL;
} // end of GetArray

/***********************************************************************/
/* Return the Value's Integer value.                                   */
/***********************************************************************/
int JVALUE::GetInteger(void)
{
  return (Value) ? Value->GetIntValue() : 0;
} // end of GetInteger

/***********************************************************************/
/* Return the Value's Big integer value.                               */
/***********************************************************************/
long long JVALUE::GetBigint(void)
{
	return (Value) ? Value->GetBigintValue() : 0;
} // end of GetBigint

/***********************************************************************/
/* Return the Value's Double value.                                    */
/***********************************************************************/
double JVALUE::GetFloat(void)
{
  return (Value) ? Value->GetFloatValue() : 0.0;
} // end of GetFloat

/***********************************************************************/
/* Return the Value's String value.                                    */
/***********************************************************************/
PSZ JVALUE::GetString(void)
{
  char buf[32];
  return (Value) ? Value->GetCharString(buf) : NULL;
} // end of GetString

/***********************************************************************/
/* Return the Value's String value.                                    */
/***********************************************************************/
PSZ JVALUE::GetText(PGLOBAL g, PSZ text)
{
  if (Jsp && Jsp->GetType() == TYPE_JOB)
    return Jsp->GetText(g, text);

  char buf[32];
  PSZ  s = (Value) ? Value->GetCharString(buf) : NULL;

  if (s)
    strcat(strcat(text, " "), s);
  else
    strcat(text, " ???");

  return text;
} // end of GetText

void JVALUE::SetValue(PJSON jsp)
{ 
	if (jsp && jsp->GetType() == TYPE_JVAL) {
		Jsp = jsp->GetJsp();
		Value = jsp->GetValue();
	} else {
		Jsp = jsp;
		Value = NULL;
	} // endif Type

}	// end of SetValue;

/***********************************************************************/
/* Set the Value's value as the given integer.                         */
/***********************************************************************/
void JVALUE::SetInteger(PGLOBAL g, int n)
{
  Value = AllocateValue(g, &n, TYPE_INT);
	Jsp = NULL;
} // end of SetInteger

/***********************************************************************/
/* Set the Value's Boolean value as a tiny integer.                    */
/***********************************************************************/
void JVALUE::SetTiny(PGLOBAL g, char n)
{
	Value = AllocateValue(g, &n, TYPE_TINY);
	Jsp = NULL;
} // end of SetInteger

/***********************************************************************/
/* Set the Value's value as the given big integer.                     */
/***********************************************************************/
void JVALUE::SetBigint(PGLOBAL g, long long ll)
{
	Value = AllocateValue(g, &ll, TYPE_BIGINT);
	Jsp = NULL;
} // end of SetBigint

/***********************************************************************/
/* Set the Value's value as the given DOUBLE.                          */
/***********************************************************************/
void JVALUE::SetFloat(PGLOBAL g, double f)
{
  Value = AllocateValue(g, &f, TYPE_DOUBLE, 6);
	Jsp = NULL;
} // end of SetFloat

/***********************************************************************/
/* Set the Value's value as the given string.                          */
/***********************************************************************/
void JVALUE::SetString(PGLOBAL g, PSZ s, short c)
{
  Value = AllocateValue(g, s, TYPE_STRING, c);
	Jsp = NULL;
} // end of SetString

/***********************************************************************/
/* True when its JSON or normal value is null.                         */
/***********************************************************************/
bool JVALUE::IsNull(void)
{
  return (Jsp) ? Jsp->IsNull() : (Value) ? Value->IsZero() : true;
} // end of IsNull