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nuttx-apps/netutils/json/cJSON.c
patacongo 3c077acd5c Add apps/examples/wgetjson from Darcy Gong 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5281 42af7a65-404d-4744-a932-0658087f49c3
2012-10-31 16:04:45 +00:00

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/****************************************************************************
* apps/netutils/json/cJSON.c
*
* This file is a part of NuttX:
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Ported by: Darcy Gong
*
* And derives from the cJSON Project which has an MIT license:
*
* Copyright (c) 2009 Dave Gamble
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <string.h>
#include <stdio.h>
#include <math.h>
#include <stdlib.h>
#include <float.h>
#include <limits.h>
#include <ctype.h>
#include <unistd.h>
#include <apps/netutils/cJSON.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
static const char *ep;
static const unsigned char firstByteMark[7] =
{ 0x00, 0x00, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc };
static void *(*cJSON_malloc)(size_t sz) = malloc;
static void (*cJSON_free)(void *ptr) = free;
/****************************************************************************
* Private Prototypes
****************************************************************************/
static const char *parse_value(cJSON *item, const char *value);
static char *print_value(cJSON *item, int depth, int fmt);
static const char *parse_array(cJSON *item, const char *value);
static char *print_array(cJSON *item, int depth, int fmt);
static const char *parse_object(cJSON *item, const char *value);
static char *print_object(cJSON *item, int depth, int fmt);
/****************************************************************************
* Private Functions
****************************************************************************/
static char *cJSON_strdup(const char *str)
{
size_t len;
char *copy;
len = strlen(str) + 1;
if (!(copy = (char *)cJSON_malloc(len)))
{
return 0;
}
memcpy(copy, str, len);
return copy;
}
/* Internal constructor. */
static cJSON *cJSON_New_Item(void)
{
cJSON *node = (cJSON *) cJSON_malloc(sizeof(cJSON));
if (node)
{
memset(node, 0, sizeof(cJSON));
}
return node;
}
static int cJSON_strcasecmp(const char *s1, const char *s2)
{
if (!s1)
{
return (s1 == s2) ? 0 : 1;
}
if (!s2)
{
return 1;
}
for (; tolower(*s1) == tolower(*s2); ++s1, ++s2)
{
if (*s1 == 0)
{
return 0;
}
}
return tolower(*(const unsigned char *)s1) - tolower(*(const unsigned char *)s2);
}
/* Parse the input text to generate a number, and populate the result into item. */
static const char *parse_number(cJSON *item, const char *num)
{
double n = 0, sign = 1, scale = 0;
int subscale = 0, signsubscale = 1;
/* Could use sscanf for this? */
/* Has sign? */
if (*num == '-')
{
sign = -1, num++;
}
/* is zero */
if (*num == '0')
{
num++;
}
/* Number? */
if (*num >= '1' && *num <= '9')
{
do
{
n = (n * 10.0) + (*num++ - '0');
}
while (*num >= '0' && *num <= '9');
}
/* Fractional part? */
if (*num == '.' && num[1] >= '0' && num[1] <= '9')
{
num++;
do
{
n = (n * 10.0) + (*num++ - '0'), scale--;
}
while (*num >= '0' && *num <= '9');
}
/* Exponent? */
if (*num == 'e' || *num == 'E')
{
num++;
if (*num == '+')
{
num++;
}
/* With sign? */
else if (*num == '-')
{
signsubscale = -1;
num++;
}
/* Number? */
while (*num >= '0' && *num <= '9')
{
subscale = (subscale * 10) + (*num++ - '0');
}
}
/* number = +/- number.fraction * 10^+/-exponent */
n = sign * n * pow(10.0, (scale + subscale * signsubscale));
item->valuedouble = n;
item->valueint = (int)n;
item->type = cJSON_Number;
return num;
}
/* Render the number nicely from the given item into a string. */
static char *print_number(cJSON *item)
{
char *str;
double d = item->valuedouble;
if (fabs(((double)item->valueint) - d) <= DBL_EPSILON) /* && d<=INT_MAX && d>=INT_MIN) */
{
/* 2^64+1 can be represented in 21 chars. */
str = (char *)cJSON_malloc(21);
if (str)
{
sprintf(str, "%d", item->valueint);
}
}
else
{
/* This is a nice tradeoff. */
str = (char *)cJSON_malloc(64);
if (str)
{
if (fabs(floor(d) - d) <= DBL_EPSILON)
{
sprintf(str, "%d", item->valueint);
}
else if (fabs(d) < 1.0e-6 || fabs(d) > 1.0e9)
{
sprintf(str, "%e", d);
}
else
{
sprintf(str, " %f", d);
}
}
}
return str;
}
/* Parse the input text into an unescaped cstring, and populate item. */
static const char *parse_string(cJSON *item, const char *str)
{
const char *ptr = str + 1;
char *ptr2;
char *out;
int len = 0;
unsigned uc;
unsigned uc2;
if (*str != '\"')
{
/* not a string! */
ep = str;
return 0;
}
while (*ptr != '\"' && *ptr && ++len)
{
/* Skip escaped quotes. */
if (*ptr++ == '\\')
{
ptr++;
}
}
/* This is how long we need for the string, roughly. */
out = (char *)cJSON_malloc(len + 1);
if (!out)
{
return 0;
}
ptr = str + 1;
ptr2 = out;
while (*ptr != '\"' && *ptr)
{
if (*ptr != '\\')
{
*ptr2++ = *ptr++;
}
else
{
ptr++;
switch (*ptr)
{
case 'b':
*ptr2++ = '\b';
break;
case 'f':
*ptr2++ = '\f';
break;
case 'n':
*ptr2++ = '\n';
break;
case 'r':
*ptr2++ = '\r';
break;
case 't':
*ptr2++ = '\t';
break;
case 'u':
/* Transcode utf16 to utf8. */
/* Get the unicode char. */
sscanf(ptr + 1, "%4x", &uc);
ptr += 4;
/* Check for invalid. */
if ((uc >= 0xdc00 && uc <= 0xdfff) || uc == 0)
{
break;
}
if (uc >= 0xd800 && uc <= 0xdbff) /* UTF16 surrogate pairs. */
{
/* missing second-half of surrogate. */
if (ptr[1] != '\\' || ptr[2] != 'u')
{
break;
}
sscanf(ptr + 3, "%4x", &uc2);
ptr += 6;
if (uc2 < 0xdc00 || uc2 > 0xdfff)
{
/* Invalid second-half of surrogate. */
break;
}
uc = 0x10000 | ((uc & 0x3ff) << 10) | (uc2 & 0x3ff);
}
len = 4;
if (uc < 0x80)
{
len = 1;
}
else if (uc < 0x800)
{
len = 2;
}
else if (uc < 0x10000)
{
len = 3;
}
ptr2 += len;
switch (len)
{
case 4:
*--ptr2 = ((uc | 0x80) & 0xbf);
uc >>= 6;
case 3:
*--ptr2 = ((uc | 0x80) & 0xbf);
uc >>= 6;
case 2:
*--ptr2 = ((uc | 0x80) & 0xbf);
uc >>= 6;
case 1:
*--ptr2 = (uc | firstByteMark[len]);
break;
}
ptr2 += len;
break;
default:
*ptr2++ = *ptr;
break;
}
ptr++;
}
}
*ptr2 = 0;
if (*ptr == '\"')
{
ptr++;
}
item->valuestring = out;
item->type = cJSON_String;
return ptr;
}
/* Render the cstring provided to an escaped version that can be printed. */
static char *print_string_ptr(const char *str)
{
const char *ptr;
char *ptr2, *out;
int len = 0;
unsigned char token;
if (!str)
{
return cJSON_strdup("");
}
ptr = str;
while ((token = *ptr) && ++len)
{
if (strchr("\"\\\b\f\n\r\t", token))
{
len++;
}
else if (token < 32)
{
len += 5;
}
ptr++;
}
out = (char *)cJSON_malloc(len + 3);
if (!out)
{
return 0;
}
ptr2 = out;
ptr = str;
*ptr2++ = '\"';
while (*ptr)
{
if ((unsigned char)*ptr > 31 && *ptr != '\"' && *ptr != '\\')
{
*ptr2++ = *ptr++;
}
else
{
*ptr2++ = '\\';
switch (token = *ptr++)
{
case '\\':
*ptr2++ = '\\';
break;
case '\"':
*ptr2++ = '\"';
break;
case '\b':
*ptr2++ = 'b';
break;
case '\f':
*ptr2++ = 'f';
break;
case '\n':
*ptr2++ = 'n';
break;
case '\r':
*ptr2++ = 'r';
break;
case '\t':
*ptr2++ = 't';
break;
default:
/* Escape and print */
sprintf(ptr2, "u%04x", token);
ptr2 += 5;
break;
}
}
}
*ptr2++ = '\"';
*ptr2++ = 0;
return out;
}
/* Invote print_string_ptr (which is useful) on an item. */
static char *print_string(cJSON *item)
{
return print_string_ptr(item->valuestring);
}
/* 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;
}
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