File:  [ELWIX - Embedded LightWeight unIX -] / libelwix / example / test_json.c
Revision 1.1.2.6: download - view: text, annotated - select for diffs - revision graph
Tue Nov 28 13:42:22 2017 UTC (6 years, 6 months ago) by misho
Branches: elwix4_5
minor changes

    1: #include <stdio.h>
    2: #include <string.h>
    3: #include <unistd.h>
    4: #include <fcntl.h>
    5: #include <errno.h>
    6: #include <sys/types.h>
    7: #include <elwix.h>
    8: 
    9: 
   10: int
   11: run_simple(json_t *json)
   12: {
   13: 	static const char *teststr = "{\"user\": \"johndoe\", { \"meow\", \"\", \"\aaa\"}, \"admin\": false, \"uid\": 1000, \"objects\" : { \"a\":\"1\", \"b\" : \"2\" ,\"c\" : \"3\", , \"oho\"},\n"
   14:         				"\"groups\": [\"users\", \"\", \"wheel\", \"audio\", \"video\"], \"testend\":{\"x\" : \"8\", \"y\":\"7\", \"z\" : \"9\"}}";
   15: 	int i, ret;
   16: 	jtok_t *tok, toks[36];
   17: 	ait_val_t *v;
   18: 	char *str;
   19: 	array_t *arr;
   20: 
   21: 	json_init(json, 0);
   22: 	ret = json_parse(json, teststr, strlen(teststr), NULL, 0);
   23: 	if (ret == -1) {
   24: 		printf("Error:: #%d - %s\n", elwix_GetErrno(), elwix_GetError());
   25: 		return 1;
   26: 	} else
   27: 		printf("We are need from %d tokens\n", ret);
   28: 	json_init(json, 1);
   29: 	ret = json_parse(json, teststr, strlen(teststr), NULL, 0);
   30: 	if (ret == -1) {
   31: 		printf("Error:: #%d - %s\n", elwix_GetErrno(), elwix_GetError());
   32: 		return 1;
   33: 	} else
   34: 		printf("(strict) We are need from %d tokens\n", ret);
   35: 	json_init(json, 0);
   36: 	ret = json_parse(json, teststr, strlen(teststr), toks, sizeof toks/sizeof *toks);
   37: 	if (ret == -1) {
   38: 		printf("Error:: #%d - %s\n", elwix_GetErrno(), elwix_GetError());
   39: 		return 1;
   40: 	} else
   41: 		printf("We parsed %d tokens next=%lu\n", ret, json->h_next);
   42: 	memset(toks, 0, sizeof toks);
   43: 	json_init(json, 1);
   44: 	ret = json_parse(json, teststr, strlen(teststr), toks, sizeof toks/sizeof *toks);
   45: 	if (ret == -1) {
   46: 		printf("Error:: #%d - %s\n", elwix_GetErrno(), elwix_GetError());
   47: 		return 1;
   48: 	} else
   49: 		printf("(strict) We parsed %d tokens next=%lu\n", ret, json->h_next);
   50: 
   51: 	if (!(tok = json_findbykey(teststr, "boza s kosmi", toks, ret)))
   52: 		printf("Key=\"boza s kosmi\" not found!\n");
   53: 	tok = json_findbykey(teststr, "user", toks, ret);
   54: 	v = json_token2val(teststr, tok);
   55: 	printf("Key=\"user\" data parent=%ld idx=%ld size=%ld type=%d %s\n", tok->tok_parent, tok->tok_idx, tok->tok_size, tok->tok_type, AIT_GET_STR(v));
   56: 	ait_freeVar(&v);
   57: 	tok = json_findbykey(teststr, "admin", toks, ret);
   58: 	str = json_token2str(teststr, tok);
   59: 	printf("Key=\"admin\" data parent=%ld idx=%ld size=%ld type=%d %s\n", tok->tok_parent, tok->tok_idx, tok->tok_size, tok->tok_type, str);
   60: 	e_free(str);
   61: 	tok = json_findbykey(teststr, "uid", toks, ret);
   62: 	printf("Key=\"uid\" data parent=%ld idx=%ld size=%ld type=%d %ld\n", tok->tok_parent, tok->tok_idx, tok->tok_size, tok->tok_type, 
   63: 			json_token2num(teststr, tok));
   64: 	arr = json_token2array(teststr, tok);
   65: 	for (i = 0; i < array_Size(arr); i++)
   66: 		printf("arr[%d]=%s\n", i, AIT_GET_STR(array(arr, i, ait_val_t*)));
   67: 	ait_freeVars(&arr);
   68: 
   69: 	tok = json_findbykey(teststr, "groups", toks, ret);
   70: 	str = json_token2str(teststr, tok);
   71: 	arr = json_token2array(teststr, tok);
   72: 	printf("Key=\"groups\" data parent=%ld idx=%ld size=%ld type=%d %s\n", tok->tok_parent, tok->tok_idx, tok->tok_size, tok->tok_type, str);
   73: 	e_free(str);
   74: 	for (i = 0; i < array_Size(arr); i++)
   75: 		printf("arr[%d]=%s\n", i, AIT_GET_STR(array(arr, i, ait_val_t*)));
   76: 	ait_freeVars(&arr);
   77: 
   78: 	tok = json_findbykey(teststr, "objects", toks, ret);
   79: 	str = json_token2str(teststr, tok);
   80: 	arr = json_token2array(teststr, tok);
   81: 	printf("Key=\"objects\" data parent=%ld idx=%ld size=%ld type=%d %s\n", tok->tok_parent, tok->tok_idx, tok->tok_size, tok->tok_type, str);
   82: 	e_free(str);
   83: 	for (i = 0; i < array_Size(arr); i++)
   84: 		printf("arr[%d]=%s\n", i, AIT_GET_STR(array(arr, i, ait_val_t*)));
   85: 	ait_freeVars(&arr);
   86: 
   87: 	tok = json_findbykey(teststr, "testend", toks, ret);
   88: 	str = json_token2str(teststr, tok);
   89: 	arr = json_token2array(teststr, tok);
   90: 	printf("Key=\"testend\" data parent=%ld idx=%ld size=%ld type=%d %s\n", tok->tok_parent, tok->tok_idx, tok->tok_size, tok->tok_type, str);
   91: 	e_free(str);
   92: 	for (i = 0; i < array_Size(arr); i++)
   93: 		printf("arr[%d]=%s\n", i, AIT_GET_STR(array(arr, i, ait_val_t*)));
   94: 	ait_freeVars(&arr);
   95: 
   96: 	return 0;
   97: }
   98: 
   99: static int
  100: dump(const char *jstr, jtok_t *toks, int toksnum, int indent)
  101: {
  102: 	register int i, j, k;
  103: 
  104: 	if (!toksnum)
  105: 		return 0;
  106: 
  107: 	if (toks->tok_type == J_VALUE) {
  108: 		printf("%.*s", (int) json_toklen(toks), json_tokstr(jstr, toks));
  109: 		return 1;
  110: 	} else if (toks->tok_type == J_STRING) {
  111: 		printf("%.*s", (int) json_toklen(toks), json_tokstr(jstr, toks));
  112: 		return 1;
  113: 	} else if (toks->tok_type == J_OBJECT) {
  114: 		printf("\n");
  115: 		for (j = i = 0; i < json_toksize(toks); i++) {
  116: 			for (k = 0; k < indent; k++)
  117: 				printf("  ");
  118: 			j += dump(jstr, toks + j + 1, toksnum - j, indent + 1);
  119: 			printf(": ");
  120: 			j += dump(jstr, toks + j + 1, toksnum - j, indent + 1);
  121: 			printf("\n");
  122: 		}
  123: 		return j + 1;
  124: 	} else if (toks->tok_type == J_ARRAY) {
  125: 		printf("\n");
  126: 		for (j = i = 0; i < json_toksize(toks); i++) {
  127: 			for (k = 0; k < indent - 1; k++)
  128: 				printf("  ");
  129: 			printf("   - ");
  130: 			j += dump(jstr, toks + j + 1, toksnum - j, indent + 1);
  131: 			printf("\n");
  132: 		}
  133: 		return j + 1;
  134: 	}
  135: 
  136: 	return 0;
  137: }
  138: 
  139: int
  140: run_dump(json_t *json)
  141: {
  142: 	int rlen, toksnum, wait4eof = 0;
  143: 	char buf[BUFSIZ];
  144: 	ait_val_t v;
  145: 	jtok_t *toks, *t;
  146: 
  147: 	toks = e_malloc(sizeof(jtok_t));
  148: 	if (!toks)
  149: 		return 1;
  150: 	else
  151: 		toksnum = 1;
  152: 	AIT_SET_STRSIZ(&v, 1);
  153: 	while (42) {
  154: 		memset(buf, 0, sizeof buf);
  155: 		rlen = fread(buf, 1, sizeof buf, stdin);
  156: 		switch (rlen) {
  157: 			case -1:
  158: 				printf("Error:: fread() #%d - %s\n", errno, strerror(errno));
  159: 				AIT_FREE_VAL(&v);
  160: 				e_free(toks);
  161: 				return 2;
  162: 			case 0:
  163: 				if (wait4eof)
  164: 					return 0;
  165: 				printf("Error:: Unexpected termination!\n");
  166: 				AIT_FREE_VAL(&v);
  167: 				e_free(toks);
  168: 				return 3;
  169: 			default:
  170: 				AIT_SET_STRCAT(&v, buf);
  171: 				break;
  172: 		}
  173: again:
  174: 		rlen = json_parse(json, AIT_GET_STR(&v), AIT_LEN(&v), toks, toksnum);
  175: 		if (rlen == (u_int) -1) {
  176: 		       	if (elwix_GetErrno() == J_ERR_NOMEM) {
  177: 				toksnum *= 2;
  178: 				t = e_realloc(toks, sizeof(jtok_t) * toksnum);
  179: 				if (t) {
  180: 					toks = t;
  181: 					goto again;
  182: 				}
  183: 			}
  184: 		} else {
  185: 			dump(AIT_GET_STR(&v), toks, json->h_next, 0);
  186: 			wait4eof = 1;
  187: 		}
  188: 	}
  189: 	AIT_FREE_VAL(&v);
  190: 	e_free(toks);
  191: 
  192: 	return 0;
  193: }
  194: 
  195: int
  196: main(int argc, char **argv)
  197: {
  198: 	json_t json;
  199: 
  200: 	if (argc < 2)
  201: 		return run_simple(&json);
  202: 	else
  203: 		return run_dump(&json);
  204: 
  205: 	return 0;
  206: }

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