1577 lines
28 KiB
C
1577 lines
28 KiB
C
/****************************************************************************
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* apps/netutils/json/cJSON.c
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*
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* This file is a part of NuttX:
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*
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* Copyright (C) 2011 Gregory Nutt. All rights reserved.
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* Ported by: Darcy Gong
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*
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* And derives from the cJSON Project which has an MIT license:
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*
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* Copyright (c) 2009 Dave Gamble
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <string.h>
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#include <stdio.h>
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#include <math.h>
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#include <stdlib.h>
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#include <float.h>
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#include <limits.h>
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#include <ctype.h>
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#include <unistd.h>
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#include <apps/netutils/cJSON.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static const char *ep;
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static const unsigned char firstByteMark[7] =
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{ 0x00, 0x00, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc };
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static void *(*cJSON_malloc)(size_t sz) = malloc;
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static void (*cJSON_free)(void *ptr) = free;
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/****************************************************************************
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* Private Prototypes
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****************************************************************************/
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static const char *parse_value(cJSON *item, const char *value);
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static char *print_value(cJSON *item, int depth, int fmt);
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static const char *parse_array(cJSON *item, const char *value);
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static char *print_array(cJSON *item, int depth, int fmt);
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static const char *parse_object(cJSON *item, const char *value);
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static char *print_object(cJSON *item, int depth, int fmt);
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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static char *cJSON_strdup(const char *str)
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{
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size_t len;
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char *copy;
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len = strlen(str) + 1;
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if (!(copy = (char *)cJSON_malloc(len)))
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{
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return 0;
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}
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memcpy(copy, str, len);
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return copy;
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}
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/* Internal constructor. */
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static cJSON *cJSON_New_Item(void)
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{
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cJSON *node = (cJSON *) cJSON_malloc(sizeof(cJSON));
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if (node)
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{
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memset(node, 0, sizeof(cJSON));
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}
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return node;
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}
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static int cJSON_strcasecmp(const char *s1, const char *s2)
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{
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if (!s1)
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{
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return (s1 == s2) ? 0 : 1;
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}
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if (!s2)
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{
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return 1;
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}
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for (; tolower(*s1) == tolower(*s2); ++s1, ++s2)
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{
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if (*s1 == 0)
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{
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return 0;
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}
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}
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return tolower(*(const unsigned char *)s1) - tolower(*(const unsigned char *)s2);
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}
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/* Parse the input text to generate a number, and populate the result into item. */
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static const char *parse_number(cJSON *item, const char *num)
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{
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double n = 0, sign = 1, scale = 0;
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int subscale = 0, signsubscale = 1;
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/* Could use sscanf for this? */
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/* Has sign? */
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if (*num == '-')
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{
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sign = -1, num++;
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}
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/* is zero */
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if (*num == '0')
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{
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num++;
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}
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/* Number? */
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if (*num >= '1' && *num <= '9')
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{
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do
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{
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n = (n * 10.0) + (*num++ - '0');
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}
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while (*num >= '0' && *num <= '9');
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}
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/* Fractional part? */
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if (*num == '.' && num[1] >= '0' && num[1] <= '9')
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{
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num++;
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do
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{
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n = (n * 10.0) + (*num++ - '0'), scale--;
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}
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while (*num >= '0' && *num <= '9');
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}
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/* Exponent? */
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if (*num == 'e' || *num == 'E')
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{
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num++;
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if (*num == '+')
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{
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num++;
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}
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/* With sign? */
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else if (*num == '-')
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{
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signsubscale = -1;
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num++;
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}
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/* Number? */
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while (*num >= '0' && *num <= '9')
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{
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subscale = (subscale * 10) + (*num++ - '0');
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}
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}
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/* number = +/- number.fraction * 10^+/-exponent */
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n = sign * n * pow(10.0, (scale + subscale * signsubscale));
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item->valuedouble = n;
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item->valueint = (int)n;
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item->type = cJSON_Number;
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return num;
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}
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/* Render the number nicely from the given item into a string. */
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static char *print_number(cJSON *item)
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{
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char *str;
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double d = item->valuedouble;
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if (fabs(((double)item->valueint) - d) <= DBL_EPSILON) /* && d<=INT_MAX && d>=INT_MIN) */
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{
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/* 2^64+1 can be represented in 21 chars. */
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str = (char *)cJSON_malloc(21);
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if (str)
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{
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sprintf(str, "%d", item->valueint);
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}
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}
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else
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{
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/* This is a nice tradeoff. */
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str = (char *)cJSON_malloc(64);
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if (str)
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{
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if (fabs(floor(d) - d) <= DBL_EPSILON)
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{
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sprintf(str, "%d", item->valueint);
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}
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else if (fabs(d) < 1.0e-6 || fabs(d) > 1.0e9)
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{
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sprintf(str, "%e", d);
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}
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else
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{
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sprintf(str, " %f", d);
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}
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}
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}
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return str;
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}
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/* Parse the input text into an unescaped cstring, and populate item. */
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static const char *parse_string(cJSON *item, const char *str)
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{
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const char *ptr = str + 1;
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char *ptr2;
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char *out;
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int len = 0;
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unsigned uc;
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unsigned uc2;
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if (*str != '\"')
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{
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/* not a string! */
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ep = str;
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return 0;
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}
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while (*ptr != '\"' && *ptr && ++len)
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{
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/* Skip escaped quotes. */
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if (*ptr++ == '\\')
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{
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ptr++;
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}
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}
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/* This is how long we need for the string, roughly. */
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out = (char *)cJSON_malloc(len + 1);
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if (!out)
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{
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return 0;
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}
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ptr = str + 1;
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ptr2 = out;
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while (*ptr != '\"' && *ptr)
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{
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if (*ptr != '\\')
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{
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*ptr2++ = *ptr++;
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}
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else
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{
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ptr++;
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switch (*ptr)
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{
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case 'b':
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*ptr2++ = '\b';
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break;
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case 'f':
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*ptr2++ = '\f';
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break;
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case 'n':
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*ptr2++ = '\n';
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break;
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case 'r':
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*ptr2++ = '\r';
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break;
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case 't':
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*ptr2++ = '\t';
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break;
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case 'u':
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/* Transcode utf16 to utf8. */
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/* Get the unicode char. */
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sscanf(ptr + 1, "%4x", &uc);
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ptr += 4;
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/* Check for invalid. */
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if ((uc >= 0xdc00 && uc <= 0xdfff) || uc == 0)
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{
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break;
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}
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if (uc >= 0xd800 && uc <= 0xdbff) /* UTF16 surrogate pairs. */
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{
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/* missing second-half of surrogate. */
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if (ptr[1] != '\\' || ptr[2] != 'u')
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{
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break;
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}
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sscanf(ptr + 3, "%4x", &uc2);
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ptr += 6;
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if (uc2 < 0xdc00 || uc2 > 0xdfff)
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{
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/* Invalid second-half of surrogate. */
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break;
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}
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uc = 0x10000 | ((uc & 0x3ff) << 10) | (uc2 & 0x3ff);
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}
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len = 4;
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if (uc < 0x80)
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{
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len = 1;
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}
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else if (uc < 0x800)
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{
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len = 2;
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}
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else if (uc < 0x10000)
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{
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len = 3;
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}
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ptr2 += len;
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switch (len)
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{
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case 4:
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*--ptr2 = ((uc | 0x80) & 0xbf);
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uc >>= 6;
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case 3:
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*--ptr2 = ((uc | 0x80) & 0xbf);
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uc >>= 6;
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case 2:
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*--ptr2 = ((uc | 0x80) & 0xbf);
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uc >>= 6;
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case 1:
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*--ptr2 = (uc | firstByteMark[len]);
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break;
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}
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ptr2 += len;
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break;
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default:
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*ptr2++ = *ptr;
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break;
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}
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ptr++;
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}
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}
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*ptr2 = 0;
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if (*ptr == '\"')
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{
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ptr++;
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}
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item->valuestring = out;
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item->type = cJSON_String;
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return ptr;
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}
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/* Render the cstring provided to an escaped version that can be printed. */
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static char *print_string_ptr(const char *str)
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{
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const char *ptr;
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char *ptr2, *out;
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int len = 0;
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unsigned char token;
|
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if (!str)
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{
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return cJSON_strdup("");
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}
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ptr = str;
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while ((token = *ptr) && ++len)
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{
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if (strchr("\"\\\b\f\n\r\t", token))
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{
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len++;
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}
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else if (token < 32)
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{
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len += 5;
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}
|
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ptr++;
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}
|
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out = (char *)cJSON_malloc(len + 3);
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if (!out)
|
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{
|
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return 0;
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}
|
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ptr2 = out;
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ptr = str;
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*ptr2++ = '\"';
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while (*ptr)
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{
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if ((unsigned char)*ptr > 31 && *ptr != '\"' && *ptr != '\\')
|
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{
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*ptr2++ = *ptr++;
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}
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else
|
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{
|
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*ptr2++ = '\\';
|
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switch (token = *ptr++)
|
|
{
|
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case '\\':
|
|
*ptr2++ = '\\';
|
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break;
|
|
|
|
case '\"':
|
|
*ptr2++ = '\"';
|
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break;
|
|
|
|
case '\b':
|
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*ptr2++ = 'b';
|
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break;
|
|
|
|
case '\f':
|
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*ptr2++ = 'f';
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break;
|
|
|
|
case '\n':
|
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*ptr2++ = 'n';
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break;
|
|
|
|
case '\r':
|
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*ptr2++ = 'r';
|
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break;
|
|
|
|
case '\t':
|
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*ptr2++ = 't';
|
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break;
|
|
|
|
default:
|
|
/* Escape and print */
|
|
|
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sprintf(ptr2, "u%04x", token);
|
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ptr2 += 5;
|
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break;
|
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}
|
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}
|
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}
|
|
|
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*ptr2++ = '\"';
|
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*ptr2++ = 0;
|
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return out;
|
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}
|
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|
|
/* Invote print_string_ptr (which is useful) on an item. */
|
|
|
|
static char *print_string(cJSON *item)
|
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{
|
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return print_string_ptr(item->valuestring);
|
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}
|
|
|
|
/* Utility to jump whitespace and cr/lf */
|
|
|
|
static const char *skip(const char *in)
|
|
{
|
|
while (in && *in && (unsigned char)*in <= 32)
|
|
{
|
|
in++;
|
|
}
|
|
|
|
return in;
|
|
}
|
|
|
|
/* Parser core - when encountering text, process appropriately. */
|
|
|
|
static const char *parse_value(cJSON *item, const char *value)
|
|
{
|
|
if (!value)
|
|
{
|
|
/* Fail on null. */
|
|
|
|
return 0;
|
|
}
|
|
|
|
if (!strncmp(value, "null", 4))
|
|
{
|
|
item->type = cJSON_NULL;
|
|
return value + 4;
|
|
}
|
|
|
|
if (!strncmp(value, "false", 5))
|
|
{
|
|
item->type = cJSON_False;
|
|
return value + 5;
|
|
}
|
|
|
|
if (!strncmp(value, "true", 4))
|
|
{
|
|
item->type = cJSON_True;
|
|
item->valueint = 1;
|
|
return value + 4;
|
|
}
|
|
|
|
if (*value == '\"')
|
|
{
|
|
return parse_string(item, value);
|
|
}
|
|
|
|
if (*value == '-' || (*value >= '0' && *value <= '9'))
|
|
{
|
|
return parse_number(item, value);
|
|
}
|
|
|
|
if (*value == '[')
|
|
{
|
|
return parse_array(item, value);
|
|
}
|
|
|
|
if (*value == '{')
|
|
{
|
|
return parse_object(item, value);
|
|
}
|
|
|
|
/* Failure. */
|
|
|
|
ep = value;
|
|
return 0;
|
|
}
|
|
|
|
/* Render a value to text. */
|
|
|
|
static char *print_value(cJSON *item, int depth, int fmt)
|
|
{
|
|
char *out = 0;
|
|
if (!item)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
switch ((item->type) & 255)
|
|
{
|
|
case cJSON_NULL:
|
|
out = cJSON_strdup("null");
|
|
break;
|
|
|
|
case cJSON_False:
|
|
out = cJSON_strdup("false");
|
|
break;
|
|
|
|
case cJSON_True:
|
|
out = cJSON_strdup("true");
|
|
break;
|
|
|
|
case cJSON_Number:
|
|
out = print_number(item);
|
|
break;
|
|
|
|
case cJSON_String:
|
|
out = print_string(item);
|
|
break;
|
|
|
|
case cJSON_Array:
|
|
out = print_array(item, depth, fmt);
|
|
break;
|
|
|
|
case cJSON_Object:
|
|
out = print_object(item, depth, fmt);
|
|
break;
|
|
}
|
|
|
|
return out;
|
|
}
|
|
|
|
/* Build an array from input text. */
|
|
|
|
static const char *parse_array(cJSON *item, const char *value)
|
|
{
|
|
cJSON *child;
|
|
|
|
if (*value != '[')
|
|
{
|
|
/* not an array! */
|
|
|
|
ep = value;
|
|
return 0;
|
|
}
|
|
|
|
item->type = cJSON_Array;
|
|
value = skip(value + 1);
|
|
if (*value == ']')
|
|
{
|
|
/* Empty array. */
|
|
|
|
return value + 1;
|
|
}
|
|
|
|
item->child = child = cJSON_New_Item();
|
|
if (!item->child)
|
|
{
|
|
/* Memory fail */
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Skip any spacing, get the value. */
|
|
|
|
value = skip(parse_value(child, skip(value)));
|
|
if (!value)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
while (*value == ',')
|
|
{
|
|
cJSON *new_item;
|
|
if (!(new_item = cJSON_New_Item()))
|
|
{
|
|
/* <emory fail */
|
|
|
|
return 0;
|
|
}
|
|
|
|
child->next = new_item;
|
|
new_item->prev = child;
|
|
child = new_item;
|
|
value = skip(parse_value(child, skip(value + 1)));
|
|
if (!value)
|
|
{
|
|
/* Memory fail */
|
|
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
if (*value == ']')
|
|
{
|
|
/* End of array */
|
|
|
|
return value + 1;
|
|
}
|
|
|
|
/* Malformed */
|
|
|
|
ep = value;
|
|
return 0;
|
|
}
|
|
|
|
/* Render an array to text */
|
|
|
|
static char *print_array(cJSON *item, int depth, int fmt)
|
|
{
|
|
char **entries;
|
|
char *out = 0;
|
|
char *ptr;
|
|
char *ret;
|
|
int len = 5;
|
|
cJSON *child = item->child;
|
|
int numentries = 0;
|
|
int i = 0;
|
|
int fail = 0;
|
|
|
|
/* How many entries in the array? */
|
|
|
|
while (child)
|
|
{
|
|
numentries++, child = child->next;
|
|
}
|
|
|
|
/* Allocate an array to hold the values for each */
|
|
|
|
entries = (char **)cJSON_malloc(numentries * sizeof(char *));
|
|
if (!entries)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
memset(entries, 0, numentries * sizeof(char *));
|
|
|
|
/* Retrieve all the results: */
|
|
|
|
child = item->child;
|
|
while (child && !fail)
|
|
{
|
|
ret = print_value(child, depth + 1, fmt);
|
|
entries[i++] = ret;
|
|
if (ret)
|
|
{
|
|
len += strlen(ret) + 2 + (fmt ? 1 : 0);
|
|
}
|
|
else
|
|
{
|
|
fail = 1;
|
|
}
|
|
|
|
child = child->next;
|
|
}
|
|
|
|
/* If we didn't fail, try to malloc the output string */
|
|
|
|
if (!fail)
|
|
{
|
|
out = (char *)cJSON_malloc(len);
|
|
}
|
|
|
|
/* If that fails, we fail. */
|
|
|
|
if (!out)
|
|
{
|
|
fail = 1;
|
|
}
|
|
|
|
/* Handle failure. */
|
|
|
|
if (fail)
|
|
{
|
|
for (i = 0; i < numentries; i++)
|
|
{
|
|
if (entries[i])
|
|
{
|
|
cJSON_free(entries[i]);
|
|
}
|
|
}
|
|
|
|
cJSON_free(entries);
|
|
return 0;
|
|
}
|
|
|
|
/* Compose the output array. */
|
|
|
|
*out = '[';
|
|
ptr = out + 1;
|
|
*ptr = 0;
|
|
for (i = 0; i < numentries; i++)
|
|
{
|
|
strcpy(ptr, entries[i]);
|
|
ptr += strlen(entries[i]);
|
|
if (i != numentries - 1)
|
|
{
|
|
*ptr++ = ',';
|
|
if (fmt)
|
|
{
|
|
*ptr++ = ' ';
|
|
}
|
|
|
|
*ptr = 0;
|
|
}
|
|
cJSON_free(entries[i]);
|
|
}
|
|
|
|
cJSON_free(entries);
|
|
*ptr++ = ']';
|
|
*ptr++ = 0;
|
|
return out;
|
|
}
|
|
|
|
/* Build an object from the text. */
|
|
|
|
static const char *parse_object(cJSON *item, const char *value)
|
|
{
|
|
cJSON *child;
|
|
if (*value != '{')
|
|
{
|
|
/* Not an object! */
|
|
|
|
ep = value;
|
|
return 0;
|
|
}
|
|
|
|
item->type = cJSON_Object;
|
|
value = skip(value + 1);
|
|
if (*value == '}')
|
|
{
|
|
/* Empty array. */
|
|
|
|
return value + 1;
|
|
}
|
|
|
|
item->child = child = cJSON_New_Item();
|
|
if (!item->child)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
value = skip(parse_string(child, skip(value)));
|
|
if (!value)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
child->string = child->valuestring;
|
|
child->valuestring = 0;
|
|
if (*value != ':')
|
|
{
|
|
ep = value;
|
|
return 0;
|
|
}
|
|
|
|
/* Skip any spacing, get the value. */
|
|
|
|
value = skip(parse_value(child, skip(value + 1)));
|
|
if (!value)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
while (*value == ',')
|
|
{
|
|
cJSON *new_item;
|
|
if (!(new_item = cJSON_New_Item()))
|
|
{
|
|
/* Memory fail */
|
|
|
|
return 0;
|
|
}
|
|
|
|
child->next = new_item;
|
|
new_item->prev = child;
|
|
child = new_item;
|
|
value = skip(parse_string(child, skip(value + 1)));
|
|
if (!value)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
child->string = child->valuestring;
|
|
child->valuestring = 0;
|
|
if (*value != ':')
|
|
{
|
|
ep = value;
|
|
return 0;
|
|
}
|
|
|
|
/* Skip any spacing, get the value. */
|
|
|
|
value = skip(parse_value(child, skip(value + 1)));
|
|
if (!value)
|
|
{
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
if (*value == '}')
|
|
{
|
|
/* End of array */
|
|
|
|
return value + 1;
|
|
}
|
|
|
|
/* Malformed */
|
|
|
|
ep = value;
|
|
return 0;
|
|
}
|
|
|
|
/* Render an object to text. */
|
|
|
|
static char *print_object(cJSON *item, int depth, int fmt)
|
|
{
|
|
char **entries = 0;
|
|
char **names = 0;
|
|
char *out = 0;
|
|
char *ptr;
|
|
char *ret;
|
|
char *str;
|
|
int len = 7;
|
|
int i = 0;
|
|
int j;
|
|
cJSON *child = item->child;
|
|
int numentries = 0;
|
|
int fail = 0;
|
|
|
|
/* Count the number of entries. */
|
|
|
|
while (child)
|
|
{
|
|
numentries++, child = child->next;
|
|
}
|
|
|
|
/* Allocate space for the names and the objects */
|
|
|
|
entries = (char **)cJSON_malloc(numentries * sizeof(char *));
|
|
if (!entries)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
names = (char **)cJSON_malloc(numentries * sizeof(char *));
|
|
if (!names)
|
|
{
|
|
cJSON_free(entries);
|
|
return 0;
|
|
}
|
|
|
|
memset(entries, 0, sizeof(char *) * numentries);
|
|
memset(names, 0, sizeof(char *) * numentries);
|
|
|
|
/* Collect all the results into our arrays: */
|
|
|
|
child = item->child;
|
|
depth++;
|
|
if (fmt)
|
|
{
|
|
len += depth;
|
|
}
|
|
|
|
while (child)
|
|
{
|
|
names[i] = str = print_string_ptr(child->string);
|
|
entries[i++] = ret = print_value(child, depth, fmt);
|
|
if (str && ret)
|
|
{
|
|
len += strlen(ret) + strlen(str) + 2 + (fmt ? 2 + depth : 0);
|
|
}
|
|
else
|
|
{
|
|
fail = 1;
|
|
}
|
|
|
|
child = child->next;
|
|
}
|
|
|
|
/* Try to allocate the output string */
|
|
|
|
if (!fail)
|
|
{
|
|
out = (char *)cJSON_malloc(len);
|
|
}
|
|
|
|
if (!out)
|
|
{
|
|
fail = 1;
|
|
}
|
|
|
|
/* Handle failure */
|
|
|
|
if (fail)
|
|
{
|
|
for (i = 0; i < numentries; i++)
|
|
{
|
|
if (names[i])
|
|
{
|
|
cJSON_free(names[i]);
|
|
}
|
|
|
|
if (entries[i])
|
|
{
|
|
cJSON_free(entries[i]);
|
|
}
|
|
}
|
|
|
|
cJSON_free(names);
|
|
cJSON_free(entries);
|
|
return 0;
|
|
}
|
|
|
|
/* Compose the output: */
|
|
|
|
*out = '{';
|
|
ptr = out + 1;
|
|
if (fmt)
|
|
{
|
|
*ptr++ = '\n';
|
|
}
|
|
*ptr = 0;
|
|
|
|
for (i = 0; i < numentries; i++)
|
|
{
|
|
if (fmt)
|
|
{
|
|
for (j = 0; j < depth; j++)
|
|
{
|
|
*ptr++ = '\t';
|
|
}
|
|
}
|
|
|
|
strcpy(ptr, names[i]);
|
|
ptr += strlen(names[i]);
|
|
*ptr++ = ':';
|
|
if (fmt)
|
|
{
|
|
*ptr++ = '\t';
|
|
}
|
|
|
|
strcpy(ptr, entries[i]);
|
|
ptr += strlen(entries[i]);
|
|
if (i != numentries - 1)
|
|
{
|
|
*ptr++ = ',';
|
|
}
|
|
|
|
if (fmt)
|
|
{
|
|
*ptr++ = '\n';
|
|
}
|
|
|
|
*ptr = 0;
|
|
cJSON_free(names[i]);
|
|
cJSON_free(entries[i]);
|
|
}
|
|
|
|
cJSON_free(names);
|
|
cJSON_free(entries);
|
|
if (fmt)
|
|
{
|
|
for (i = 0; i < depth - 1; i++)
|
|
{
|
|
*ptr++ = '\t';
|
|
}
|
|
}
|
|
|
|
*ptr++ = '}';
|
|
*ptr++ = 0;
|
|
return out;
|
|
}
|
|
|
|
/* Utility for array list handling. */
|
|
|
|
static void suffix_object(cJSON *prev, cJSON *item)
|
|
{
|
|
prev->next = item;
|
|
item->prev = prev;
|
|
}
|
|
|
|
/* Utility for handling references. */
|
|
|
|
static cJSON *create_reference(cJSON *item)
|
|
{
|
|
cJSON *ref = cJSON_New_Item();
|
|
if (!ref)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
memcpy(ref, item, sizeof(cJSON));
|
|
ref->string = 0;
|
|
ref->type |= cJSON_IsReference;
|
|
ref->next = ref->prev = 0;
|
|
return ref;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
const char *cJSON_GetErrorPtr(void)
|
|
{
|
|
return ep;
|
|
}
|
|
|
|
void cJSON_InitHooks(cJSON_Hooks *hooks)
|
|
{
|
|
if (!hooks)
|
|
{
|
|
/* Reset hooks */
|
|
|
|
cJSON_malloc = malloc;
|
|
cJSON_free = free;
|
|
return;
|
|
}
|
|
|
|
cJSON_malloc = (hooks->malloc_fn) ? hooks->malloc_fn : malloc;
|
|
cJSON_free = (hooks->free_fn) ? hooks->free_fn : free;
|
|
}
|
|
|
|
/* Delete a cJSON structure. */
|
|
|
|
void cJSON_Delete(cJSON *c)
|
|
{
|
|
cJSON *next;
|
|
while (c)
|
|
{
|
|
next = c->next;
|
|
if (!(c->type & cJSON_IsReference) && c->child)
|
|
{
|
|
cJSON_Delete(c->child);
|
|
}
|
|
|
|
if (!(c->type & cJSON_IsReference) && c->valuestring)
|
|
{
|
|
cJSON_free(c->valuestring);
|
|
}
|
|
|
|
if (c->string)
|
|
{
|
|
cJSON_free(c->string);
|
|
}
|
|
|
|
cJSON_free(c);
|
|
c = next;
|
|
}
|
|
}
|
|
|
|
/* Parse an object - create a new root, and populate. */
|
|
|
|
cJSON *cJSON_Parse(const char *value)
|
|
{
|
|
cJSON *c = cJSON_New_Item();
|
|
ep = 0;
|
|
if (!c)
|
|
{
|
|
/* Memory fail */
|
|
|
|
return 0;
|
|
}
|
|
|
|
if (!parse_value(c, skip(value)))
|
|
{
|
|
cJSON_Delete(c);
|
|
return 0;
|
|
}
|
|
|
|
return c;
|
|
}
|
|
|
|
/* Render a cJSON item/entity/structure to text. */
|
|
|
|
char *cJSON_Print(cJSON *item)
|
|
{
|
|
return print_value(item, 0, 1);
|
|
}
|
|
|
|
char *cJSON_PrintUnformatted(cJSON *item)
|
|
{
|
|
return print_value(item, 0, 0);
|
|
}
|
|
|
|
/* Get Array size/item / object item. */
|
|
|
|
int cJSON_GetArraySize(cJSON *array)
|
|
{
|
|
cJSON *c = array->child;
|
|
int i = 0;
|
|
|
|
while (c)
|
|
{
|
|
i++;
|
|
c = c->next;
|
|
}
|
|
|
|
return i;
|
|
}
|
|
|
|
cJSON *cJSON_GetArrayItem(cJSON *array, int item)
|
|
{
|
|
cJSON *c = array->child;
|
|
|
|
while (c && item > 0)
|
|
{
|
|
item--;
|
|
c = c->next;
|
|
}
|
|
|
|
return c;
|
|
}
|
|
|
|
cJSON *cJSON_GetObjectItem(cJSON *object, const char *string)
|
|
{
|
|
cJSON *c = object->child;
|
|
|
|
while (c && cJSON_strcasecmp(c->string, string))
|
|
{
|
|
c = c->next;
|
|
}
|
|
|
|
return c;
|
|
}
|
|
|
|
/* Add item to array/object. */
|
|
void cJSON_AddItemToArray(cJSON *array, cJSON *item)
|
|
{
|
|
cJSON *c = array->child;
|
|
|
|
if (!item)
|
|
{
|
|
return;
|
|
}
|
|
|
|
if (!c)
|
|
{
|
|
array->child = item;
|
|
}
|
|
else
|
|
{
|
|
while (c && c->next)
|
|
{
|
|
c = c->next;
|
|
}
|
|
|
|
suffix_object(c, item);
|
|
}
|
|
}
|
|
|
|
void cJSON_AddItemToObject(cJSON *object, const char *string, cJSON *item)
|
|
{
|
|
if (!item)
|
|
{
|
|
return;
|
|
}
|
|
|
|
if (item->string)
|
|
{
|
|
cJSON_free(item->string);
|
|
}
|
|
|
|
item->string = cJSON_strdup(string);
|
|
cJSON_AddItemToArray(object, item);
|
|
}
|
|
|
|
void cJSON_AddItemReferenceToArray(cJSON *array, cJSON *item)
|
|
{
|
|
cJSON_AddItemToArray(array, create_reference(item));
|
|
}
|
|
|
|
void cJSON_AddItemReferenceToObject(cJSON *object, const char *string, cJSON *item)
|
|
{
|
|
cJSON_AddItemToObject(object, string, create_reference(item));
|
|
}
|
|
|
|
cJSON *cJSON_DetachItemFromArray(cJSON *array, int which)
|
|
{
|
|
cJSON *c = array->child;
|
|
|
|
while (c && which > 0)
|
|
{
|
|
c = c->next, which--;
|
|
}
|
|
|
|
if (!c)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
if (c->prev)
|
|
{
|
|
c->prev->next = c->next;
|
|
}
|
|
|
|
if (c->next)
|
|
{
|
|
c->next->prev = c->prev;
|
|
}
|
|
|
|
if (c == array->child)
|
|
{
|
|
array->child = c->next;
|
|
}
|
|
|
|
c->prev = c->next = 0;
|
|
return c;
|
|
}
|
|
|
|
void cJSON_DeleteItemFromArray(cJSON *array, int which)
|
|
{
|
|
cJSON_Delete(cJSON_DetachItemFromArray(array, which));
|
|
}
|
|
|
|
cJSON *cJSON_DetachItemFromObject(cJSON *object, const char *string)
|
|
{
|
|
int i = 0;
|
|
cJSON *c = object->child;
|
|
|
|
while (c && cJSON_strcasecmp(c->string, string))
|
|
{
|
|
i++;
|
|
c = c->next;
|
|
}
|
|
|
|
if (c)
|
|
{
|
|
return cJSON_DetachItemFromArray(object, i);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void cJSON_DeleteItemFromObject(cJSON *object, const char *string)
|
|
{
|
|
cJSON_Delete(cJSON_DetachItemFromObject(object, string));
|
|
}
|
|
|
|
/* Replace array/object items with new ones. */
|
|
|
|
void cJSON_ReplaceItemInArray(cJSON *array, int which, cJSON *newitem)
|
|
{
|
|
cJSON *c = array->child;
|
|
|
|
while (c && which > 0)
|
|
{
|
|
c = c->next, which--;
|
|
}
|
|
|
|
if (!c)
|
|
{
|
|
return;
|
|
}
|
|
|
|
newitem->next = c->next;
|
|
newitem->prev = c->prev;
|
|
if (newitem->next)
|
|
{
|
|
newitem->next->prev = newitem;
|
|
}
|
|
|
|
if (c == array->child)
|
|
{
|
|
array->child = newitem;
|
|
}
|
|
else
|
|
{
|
|
newitem->prev->next = newitem;
|
|
}
|
|
|
|
c->next = c->prev = 0;
|
|
cJSON_Delete(c);
|
|
}
|
|
|
|
void cJSON_ReplaceItemInObject(cJSON *object, const char *string, cJSON *newitem)
|
|
{
|
|
int i = 0;
|
|
cJSON *c = object->child;
|
|
|
|
while (c && cJSON_strcasecmp(c->string, string))
|
|
{
|
|
i++;
|
|
c = c->next;
|
|
}
|
|
|
|
if (c)
|
|
{
|
|
newitem->string = cJSON_strdup(string);
|
|
cJSON_ReplaceItemInArray(object, i, newitem);
|
|
}
|
|
}
|
|
|
|
/* Create basic types: */
|
|
|
|
cJSON *cJSON_CreateNull(void)
|
|
{
|
|
cJSON *item = cJSON_New_Item();
|
|
if (item)
|
|
{
|
|
item->type = cJSON_NULL;
|
|
}
|
|
|
|
return item;
|
|
}
|
|
|
|
cJSON *cJSON_CreateTrue(void)
|
|
{
|
|
cJSON *item = cJSON_New_Item();
|
|
if (item)
|
|
{
|
|
item->type = cJSON_True;
|
|
}
|
|
|
|
return item;
|
|
}
|
|
|
|
cJSON *cJSON_CreateFalse(void)
|
|
{
|
|
cJSON *item = cJSON_New_Item();
|
|
if (item)
|
|
{
|
|
item->type = cJSON_False;
|
|
}
|
|
|
|
return item;
|
|
}
|
|
|
|
cJSON *cJSON_CreateBool(int b)
|
|
{
|
|
cJSON *item = cJSON_New_Item();
|
|
if (item)
|
|
{
|
|
item->type = b ? cJSON_True : cJSON_False;
|
|
}
|
|
|
|
return item;
|
|
}
|
|
|
|
cJSON *cJSON_CreateNumber(double num)
|
|
{
|
|
cJSON *item = cJSON_New_Item();
|
|
if (item)
|
|
{
|
|
item->type = cJSON_Number;
|
|
item->valuedouble = num;
|
|
item->valueint = (int)num;
|
|
}
|
|
|
|
return item;
|
|
}
|
|
|
|
cJSON *cJSON_CreateString(const char *string)
|
|
{
|
|
cJSON *item = cJSON_New_Item();
|
|
if (item)
|
|
{
|
|
item->type = cJSON_String;
|
|
item->valuestring = cJSON_strdup(string);
|
|
}
|
|
|
|
return item;
|
|
}
|
|
|
|
cJSON *cJSON_CreateArray(void)
|
|
{
|
|
cJSON *item = cJSON_New_Item();
|
|
if (item)
|
|
{
|
|
item->type = cJSON_Array;
|
|
}
|
|
|
|
return item;
|
|
}
|
|
|
|
cJSON *cJSON_CreateObject(void)
|
|
{
|
|
cJSON *item = cJSON_New_Item();
|
|
if (item)
|
|
{
|
|
item->type = cJSON_Object;
|
|
}
|
|
|
|
return item;
|
|
}
|
|
|
|
/* Create Arrays: */
|
|
|
|
cJSON *cJSON_CreateIntArray(const int *numbers, int count)
|
|
{
|
|
cJSON *n = 0;
|
|
cJSON *p = 0;
|
|
cJSON *a = cJSON_CreateArray();
|
|
int i;
|
|
|
|
for (i = 0; a && i < count; i++)
|
|
{
|
|
n = cJSON_CreateNumber(numbers[i]);
|
|
if (!i)
|
|
{
|
|
a->child = n;
|
|
}
|
|
else
|
|
{
|
|
suffix_object(p, n);
|
|
}
|
|
|
|
p = n;
|
|
}
|
|
|
|
return a;
|
|
}
|
|
|
|
cJSON *cJSON_CreateFloatArray(const float *numbers, int count)
|
|
{
|
|
cJSON *n = 0;
|
|
cJSON *p = 0;
|
|
cJSON *a = cJSON_CreateArray();
|
|
int i;
|
|
|
|
for (i = 0; a && i < count; i++)
|
|
{
|
|
n = cJSON_CreateNumber(numbers[i]);
|
|
if (!i)
|
|
{
|
|
a->child = n;
|
|
}
|
|
else
|
|
{
|
|
suffix_object(p, n);
|
|
}
|
|
|
|
p = n;
|
|
}
|
|
|
|
return a;
|
|
}
|
|
|
|
cJSON *cJSON_CreateDoubleArray(const double *numbers, int count)
|
|
{
|
|
cJSON *n = 0;
|
|
cJSON *p = 0;
|
|
cJSON *a = cJSON_CreateArray();
|
|
int i;
|
|
|
|
for (i = 0; a && i < count; i++)
|
|
{
|
|
n = cJSON_CreateNumber(numbers[i]);
|
|
if (!i)
|
|
{
|
|
a->child = n;
|
|
}
|
|
else
|
|
{
|
|
suffix_object(p, n);
|
|
}
|
|
|
|
p = n;
|
|
}
|
|
|
|
return a;
|
|
}
|
|
|
|
cJSON *cJSON_CreateStringArray(const char **strings, int count)
|
|
{
|
|
cJSON *n = 0;
|
|
cJSON *p = 0;
|
|
cJSON *a = cJSON_CreateArray();
|
|
int i;
|
|
|
|
for (i = 0; a && i < count; i++)
|
|
{
|
|
n = cJSON_CreateString(strings[i]);
|
|
if (!i)
|
|
{
|
|
a->child = n;
|
|
}
|
|
else
|
|
{
|
|
suffix_object(p, n);
|
|
}
|
|
|
|
p = n;
|
|
}
|
|
|
|
return a;
|
|
}
|