/*
|
Copyright (c) 2009-2017 Dave Gamble and cJSON contributors
|
|
Permission is hereby granted, free of charge, to any person obtaining a copy
|
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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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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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
|
THE SOFTWARE.
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*/
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|
/* cJSON */
|
/* JSON parser in C. */
|
|
/* disable warnings about old C89 functions in MSVC */
|
#if !defined(_CRT_SECURE_NO_DEPRECATE) && defined(_MSC_VER)
|
#define _CRT_SECURE_NO_DEPRECATE
|
#endif
|
|
#ifdef __GNUC__
|
#pragma GCC visibility push(default)
|
#endif
|
#if defined(_MSC_VER)
|
#pragma warning (push)
|
/* disable warning about single line comments in system headers */
|
#pragma warning (disable : 4001)
|
#endif
|
|
#include <string.h>
|
#include <stdio.h>
|
#include <math.h>
|
#include <stdlib.h>
|
#include <limits.h>
|
#include <ctype.h>
|
#include <float.h>
|
|
#ifdef ENABLE_LOCALES
|
#include <locale.h>
|
#endif
|
|
#if defined(_MSC_VER)
|
#pragma warning (pop)
|
#endif
|
#ifdef __GNUC__
|
#pragma GCC visibility pop
|
#endif
|
|
#include "cJSON.h"
|
|
/* define our own boolean type */
|
#ifdef true
|
#undef true
|
#endif
|
#define true ((cJSON_bool)1)
|
|
#ifdef false
|
#undef false
|
#endif
|
#define false ((cJSON_bool)0)
|
|
/* define isnan and isinf for ANSI C, if in C99 or above, isnan and isinf has been defined in math.h */
|
#ifndef isinf
|
#define isinf(d) (isnan((d - d)) && !isnan(d))
|
#endif
|
#ifndef isnan
|
#define isnan(d) (d != d)
|
#endif
|
|
#ifndef NAN
|
#ifdef _WIN32
|
#define NAN sqrt(-1.0)
|
#else
|
#define NAN 0.0/0.0
|
#endif
|
#endif
|
|
typedef struct {
|
const unsigned char *json;
|
size_t position;
|
} error;
|
static error global_error = { NULL, 0 };
|
|
CJSON_PUBLIC(const char *) cJSON_GetErrorPtr(void)
|
{
|
return (const char*) (global_error.json + global_error.position);
|
}
|
|
CJSON_PUBLIC(char *) cJSON_GetStringValue(const cJSON * const item)
|
{
|
if (!cJSON_IsString(item))
|
{
|
return NULL;
|
}
|
|
return item->valuestring;
|
}
|
|
CJSON_PUBLIC(double) cJSON_GetNumberValue(const cJSON * const item)
|
{
|
if (!cJSON_IsNumber(item))
|
{
|
return (double) NAN;
|
}
|
|
return item->valuedouble;
|
}
|
|
/* This is a safeguard to prevent copy-pasters from using incompatible C and header files */
|
#if (CJSON_VERSION_MAJOR != 1) || (CJSON_VERSION_MINOR != 7) || (CJSON_VERSION_PATCH != 14)
|
#error cJSON.h and cJSON.c have different versions. Make sure that both have the same.
|
#endif
|
|
CJSON_PUBLIC(const char*) cJSON_Version(void)
|
{
|
static char version[15];
|
sprintf(version, "%i.%i.%i", CJSON_VERSION_MAJOR, CJSON_VERSION_MINOR, CJSON_VERSION_PATCH);
|
|
return version;
|
}
|
|
/* Case insensitive string comparison, doesn't consider two NULL pointers equal though */
|
static int case_insensitive_strcmp(const unsigned char *string1, const unsigned char *string2)
|
{
|
if ((string1 == NULL) || (string2 == NULL))
|
{
|
return 1;
|
}
|
|
if (string1 == string2)
|
{
|
return 0;
|
}
|
|
for(; tolower(*string1) == tolower(*string2); (void)string1++, string2++)
|
{
|
if (*string1 == '\0')
|
{
|
return 0;
|
}
|
}
|
|
return tolower(*string1) - tolower(*string2);
|
}
|
|
typedef struct internal_hooks
|
{
|
void *(CJSON_CDECL *allocate)(size_t size);
|
void (CJSON_CDECL *deallocate)(void *pointer);
|
void *(CJSON_CDECL *reallocate)(void *pointer, size_t size);
|
} internal_hooks;
|
|
#if defined(_MSC_VER)
|
/* work around MSVC error C2322: '...' address of dllimport '...' is not static */
|
static void * CJSON_CDECL internal_malloc(size_t size)
|
{
|
return malloc(size);
|
}
|
static void CJSON_CDECL internal_free(void *pointer)
|
{
|
free(pointer);
|
}
|
static void * CJSON_CDECL internal_realloc(void *pointer, size_t size)
|
{
|
return realloc(pointer, size);
|
}
|
#else
|
#define internal_malloc malloc
|
#define internal_free free
|
#define internal_realloc realloc
|
#endif
|
|
/* strlen of character literals resolved at compile time */
|
#define static_strlen(string_literal) (sizeof(string_literal) - sizeof(""))
|
|
static internal_hooks global_hooks = { internal_malloc, internal_free, internal_realloc };
|
|
static unsigned char* cJSON_strdup(const unsigned char* string, const internal_hooks * const hooks)
|
{
|
size_t length = 0;
|
unsigned char *copy = NULL;
|
|
if (string == NULL)
|
{
|
return NULL;
|
}
|
|
length = strlen((const char*)string) + sizeof("");
|
copy = (unsigned char*)hooks->allocate(length);
|
if (copy == NULL)
|
{
|
return NULL;
|
}
|
memcpy(copy, string, length);
|
|
return copy;
|
}
|
|
CJSON_PUBLIC(void) cJSON_InitHooks(cJSON_Hooks* hooks)
|
{
|
if (hooks == NULL)
|
{
|
/* Reset hooks */
|
global_hooks.allocate = malloc;
|
global_hooks.deallocate = free;
|
global_hooks.reallocate = realloc;
|
return;
|
}
|
|
global_hooks.allocate = malloc;
|
if (hooks->malloc_fn != NULL)
|
{
|
global_hooks.allocate = hooks->malloc_fn;
|
}
|
|
global_hooks.deallocate = free;
|
if (hooks->free_fn != NULL)
|
{
|
global_hooks.deallocate = hooks->free_fn;
|
}
|
|
/* use realloc only if both free and malloc are used */
|
global_hooks.reallocate = NULL;
|
if ((global_hooks.allocate == malloc) && (global_hooks.deallocate == free))
|
{
|
global_hooks.reallocate = realloc;
|
}
|
}
|
|
/* Internal constructor. */
|
static cJSON *cJSON_New_Item(const internal_hooks * const hooks)
|
{
|
cJSON* node = (cJSON*)hooks->allocate(sizeof(cJSON));
|
if (node)
|
{
|
memset(node, '\0', sizeof(cJSON));
|
}
|
|
return node;
|
}
|
|
/* Delete a cJSON structure. */
|
CJSON_PUBLIC(void) cJSON_Delete(cJSON *item)
|
{
|
cJSON *next = NULL;
|
while (item != NULL)
|
{
|
next = item->next;
|
if (!(item->type & cJSON_IsReference) && (item->child != NULL))
|
{
|
cJSON_Delete(item->child);
|
}
|
if (!(item->type & cJSON_IsReference) && (item->valuestring != NULL))
|
{
|
global_hooks.deallocate(item->valuestring);
|
}
|
if (!(item->type & cJSON_StringIsConst) && (item->string != NULL))
|
{
|
global_hooks.deallocate(item->string);
|
}
|
global_hooks.deallocate(item);
|
item = next;
|
}
|
}
|
|
/* get the decimal point character of the current locale */
|
static unsigned char get_decimal_point(void)
|
{
|
#ifdef ENABLE_LOCALES
|
struct lconv *lconv = localeconv();
|
return (unsigned char) lconv->decimal_point[0];
|
#else
|
return '.';
|
#endif
|
}
|
|
typedef struct
|
{
|
const unsigned char *content;
|
size_t length;
|
size_t offset;
|
size_t depth; /* How deeply nested (in arrays/objects) is the input at the current offset. */
|
internal_hooks hooks;
|
} parse_buffer;
|
|
/* check if the given size is left to read in a given parse buffer (starting with 1) */
|
#define can_read(buffer, size) ((buffer != NULL) && (((buffer)->offset + size) <= (buffer)->length))
|
/* check if the buffer can be accessed at the given index (starting with 0) */
|
#define can_access_at_index(buffer, index) ((buffer != NULL) && (((buffer)->offset + index) < (buffer)->length))
|
#define cannot_access_at_index(buffer, index) (!can_access_at_index(buffer, index))
|
/* get a pointer to the buffer at the position */
|
#define buffer_at_offset(buffer) ((buffer)->content + (buffer)->offset)
|
|
/* Parse the input text to generate a number, and populate the result into item. */
|
static cJSON_bool parse_number(cJSON * const item, parse_buffer * const input_buffer)
|
{
|
double number = 0;
|
unsigned char *after_end = NULL;
|
unsigned char number_c_string[64];
|
unsigned char decimal_point = get_decimal_point();
|
size_t i = 0;
|
|
if ((input_buffer == NULL) || (input_buffer->content == NULL))
|
{
|
return false;
|
}
|
|
/* copy the number into a temporary buffer and replace '.' with the decimal point
|
* of the current locale (for strtod)
|
* This also takes care of '\0' not necessarily being available for marking the end of the input */
|
for (i = 0; (i < (sizeof(number_c_string) - 1)) && can_access_at_index(input_buffer, i); i++)
|
{
|
switch (buffer_at_offset(input_buffer)[i])
|
{
|
case '0':
|
case '1':
|
case '2':
|
case '3':
|
case '4':
|
case '5':
|
case '6':
|
case '7':
|
case '8':
|
case '9':
|
case '+':
|
case '-':
|
case 'e':
|
case 'E':
|
number_c_string[i] = buffer_at_offset(input_buffer)[i];
|
break;
|
|
case '.':
|
number_c_string[i] = decimal_point;
|
break;
|
|
default:
|
goto loop_end;
|
}
|
}
|
loop_end:
|
number_c_string[i] = '\0';
|
|
number = strtod((const char*)number_c_string, (char**)&after_end);
|
if (number_c_string == after_end)
|
{
|
return false; /* parse_error */
|
}
|
|
item->valuedouble = number;
|
|
/* use saturation in case of overflow */
|
if (number >= INT_MAX)
|
{
|
item->valueint = INT_MAX;
|
}
|
else if (number <= (double)INT_MIN)
|
{
|
item->valueint = INT_MIN;
|
}
|
else
|
{
|
item->valueint = (int)number;
|
}
|
|
item->type = cJSON_Number;
|
|
input_buffer->offset += (size_t)(after_end - number_c_string);
|
return true;
|
}
|
|
/* don't ask me, but the original cJSON_SetNumberValue returns an integer or double */
|
CJSON_PUBLIC(double) cJSON_SetNumberHelper(cJSON *object, double number)
|
{
|
if (number >= INT_MAX)
|
{
|
object->valueint = INT_MAX;
|
}
|
else if (number <= (double)INT_MIN)
|
{
|
object->valueint = INT_MIN;
|
}
|
else
|
{
|
object->valueint = (int)number;
|
}
|
|
return object->valuedouble = number;
|
}
|
|
CJSON_PUBLIC(char*) cJSON_SetValuestring(cJSON *object, const char *valuestring)
|
{
|
char *copy = NULL;
|
/* if object's type is not cJSON_String or is cJSON_IsReference, it should not set valuestring */
|
if (!(object->type & cJSON_String) || (object->type & cJSON_IsReference))
|
{
|
return NULL;
|
}
|
if (strlen(valuestring) <= strlen(object->valuestring))
|
{
|
strcpy(object->valuestring, valuestring);
|
return object->valuestring;
|
}
|
copy = (char*) cJSON_strdup((const unsigned char*)valuestring, &global_hooks);
|
if (copy == NULL)
|
{
|
return NULL;
|
}
|
if (object->valuestring != NULL)
|
{
|
cJSON_free(object->valuestring);
|
}
|
object->valuestring = copy;
|
|
return copy;
|
}
|
|
typedef struct
|
{
|
unsigned char *buffer;
|
size_t length;
|
size_t offset;
|
size_t depth; /* current nesting depth (for formatted printing) */
|
cJSON_bool noalloc;
|
cJSON_bool format; /* is this print a formatted print */
|
internal_hooks hooks;
|
} printbuffer;
|
|
/* realloc printbuffer if necessary to have at least "needed" bytes more */
|
static unsigned char* ensure(printbuffer * const p, size_t needed)
|
{
|
unsigned char *newbuffer = NULL;
|
size_t newsize = 0;
|
|
if ((p == NULL) || (p->buffer == NULL))
|
{
|
return NULL;
|
}
|
|
if ((p->length > 0) && (p->offset >= p->length))
|
{
|
/* make sure that offset is valid */
|
return NULL;
|
}
|
|
if (needed > INT_MAX)
|
{
|
/* sizes bigger than INT_MAX are currently not supported */
|
return NULL;
|
}
|
|
needed += p->offset + 1;
|
if (needed <= p->length)
|
{
|
return p->buffer + p->offset;
|
}
|
|
if (p->noalloc) {
|
return NULL;
|
}
|
|
/* calculate new buffer size */
|
if (needed > (INT_MAX / 2))
|
{
|
/* overflow of int, use INT_MAX if possible */
|
if (needed <= INT_MAX)
|
{
|
newsize = INT_MAX;
|
}
|
else
|
{
|
return NULL;
|
}
|
}
|
else
|
{
|
newsize = needed * 2;
|
}
|
|
if (p->hooks.reallocate != NULL)
|
{
|
/* reallocate with realloc if available */
|
newbuffer = (unsigned char*)p->hooks.reallocate(p->buffer, newsize);
|
if (newbuffer == NULL)
|
{
|
p->hooks.deallocate(p->buffer);
|
p->length = 0;
|
p->buffer = NULL;
|
|
return NULL;
|
}
|
}
|
else
|
{
|
/* otherwise reallocate manually */
|
newbuffer = (unsigned char*)p->hooks.allocate(newsize);
|
if (!newbuffer)
|
{
|
p->hooks.deallocate(p->buffer);
|
p->length = 0;
|
p->buffer = NULL;
|
|
return NULL;
|
}
|
if (newbuffer)
|
{
|
memcpy(newbuffer, p->buffer, p->offset + 1);
|
}
|
p->hooks.deallocate(p->buffer);
|
}
|
p->length = newsize;
|
p->buffer = newbuffer;
|
|
return newbuffer + p->offset;
|
}
|
|
/* calculate the new length of the string in a printbuffer and update the offset */
|
static void update_offset(printbuffer * const buffer)
|
{
|
const unsigned char *buffer_pointer = NULL;
|
if ((buffer == NULL) || (buffer->buffer == NULL))
|
{
|
return;
|
}
|
buffer_pointer = buffer->buffer + buffer->offset;
|
|
buffer->offset += strlen((const char*)buffer_pointer);
|
}
|
|
/* securely comparison of floating-point variables */
|
static cJSON_bool compare_double(double a, double b)
|
{
|
double maxVal = fabs(a) > fabs(b) ? fabs(a) : fabs(b);
|
return (fabs(a - b) <= maxVal * DBL_EPSILON);
|
}
|
|
/* Render the number nicely from the given item into a string. */
|
static cJSON_bool print_number(const cJSON * const item, printbuffer * const output_buffer)
|
{
|
unsigned char *output_pointer = NULL;
|
double d = item->valuedouble;
|
int length = 0;
|
size_t i = 0;
|
unsigned char number_buffer[26] = {0}; /* temporary buffer to print the number into */
|
unsigned char decimal_point = get_decimal_point();
|
double test = 0.0;
|
|
if (output_buffer == NULL)
|
{
|
return false;
|
}
|
|
/* This checks for NaN and Infinity */
|
if (isnan(d) || isinf(d))
|
{
|
length = sprintf((char*)number_buffer, "null");
|
}
|
else
|
{
|
#if 0
|
/* Try 15 decimal places of precision to avoid nonsignificant nonzero digits */
|
length = sprintf((char*)number_buffer, "%1.15g", d);
|
|
/* Check whether the original double can be recovered */
|
if ((sscanf((char*)number_buffer, "%lg", &test) != 1) || !compare_double((double)test, d))
|
{
|
/* If not, print with 17 decimal places of precision */
|
length = sprintf((char*)number_buffer, "%1.17g", d);
|
}
|
#else
|
/* HACK: Force use 6 decimal places of precision */
|
length = sprintf((char*)number_buffer, "%1.6g", d);
|
#endif
|
}
|
|
/* sprintf failed or buffer overrun occurred */
|
if ((length < 0) || (length > (int)(sizeof(number_buffer) - 1)))
|
{
|
return false;
|
}
|
|
/* reserve appropriate space in the output */
|
output_pointer = ensure(output_buffer, (size_t)length + sizeof(""));
|
if (output_pointer == NULL)
|
{
|
return false;
|
}
|
|
/* copy the printed number to the output and replace locale
|
* dependent decimal point with '.' */
|
for (i = 0; i < ((size_t)length); i++)
|
{
|
if (number_buffer[i] == decimal_point)
|
{
|
output_pointer[i] = '.';
|
continue;
|
}
|
|
output_pointer[i] = number_buffer[i];
|
}
|
output_pointer[i] = '\0';
|
|
output_buffer->offset += (size_t)length;
|
|
return true;
|
}
|
|
/* parse 4 digit hexadecimal number */
|
static unsigned parse_hex4(const unsigned char * const input)
|
{
|
unsigned int h = 0;
|
size_t i = 0;
|
|
for (i = 0; i < 4; i++)
|
{
|
/* parse digit */
|
if ((input[i] >= '0') && (input[i] <= '9'))
|
{
|
h += (unsigned int) input[i] - '0';
|
}
|
else if ((input[i] >= 'A') && (input[i] <= 'F'))
|
{
|
h += (unsigned int) 10 + input[i] - 'A';
|
}
|
else if ((input[i] >= 'a') && (input[i] <= 'f'))
|
{
|
h += (unsigned int) 10 + input[i] - 'a';
|
}
|
else /* invalid */
|
{
|
return 0;
|
}
|
|
if (i < 3)
|
{
|
/* shift left to make place for the next nibble */
|
h = h << 4;
|
}
|
}
|
|
return h;
|
}
|
|
/* converts a UTF-16 literal to UTF-8
|
* A literal can be one or two sequences of the form \uXXXX */
|
static unsigned char utf16_literal_to_utf8(const unsigned char * const input_pointer, const unsigned char * const input_end, unsigned char **output_pointer)
|
{
|
long unsigned int codepoint = 0;
|
unsigned int first_code = 0;
|
const unsigned char *first_sequence = input_pointer;
|
unsigned char utf8_length = 0;
|
unsigned char utf8_position = 0;
|
unsigned char sequence_length = 0;
|
unsigned char first_byte_mark = 0;
|
|
if ((input_end - first_sequence) < 6)
|
{
|
/* input ends unexpectedly */
|
goto fail;
|
}
|
|
/* get the first utf16 sequence */
|
first_code = parse_hex4(first_sequence + 2);
|
|
/* check that the code is valid */
|
if (((first_code >= 0xDC00) && (first_code <= 0xDFFF)))
|
{
|
goto fail;
|
}
|
|
/* UTF16 surrogate pair */
|
if ((first_code >= 0xD800) && (first_code <= 0xDBFF))
|
{
|
const unsigned char *second_sequence = first_sequence + 6;
|
unsigned int second_code = 0;
|
sequence_length = 12; /* \uXXXX\uXXXX */
|
|
if ((input_end - second_sequence) < 6)
|
{
|
/* input ends unexpectedly */
|
goto fail;
|
}
|
|
if ((second_sequence[0] != '\\') || (second_sequence[1] != 'u'))
|
{
|
/* missing second half of the surrogate pair */
|
goto fail;
|
}
|
|
/* get the second utf16 sequence */
|
second_code = parse_hex4(second_sequence + 2);
|
/* check that the code is valid */
|
if ((second_code < 0xDC00) || (second_code > 0xDFFF))
|
{
|
/* invalid second half of the surrogate pair */
|
goto fail;
|
}
|
|
|
/* calculate the unicode codepoint from the surrogate pair */
|
codepoint = 0x10000 + (((first_code & 0x3FF) << 10) | (second_code & 0x3FF));
|
}
|
else
|
{
|
sequence_length = 6; /* \uXXXX */
|
codepoint = first_code;
|
}
|
|
/* encode as UTF-8
|
* takes at maximum 4 bytes to encode:
|
* 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx */
|
if (codepoint < 0x80)
|
{
|
/* normal ascii, encoding 0xxxxxxx */
|
utf8_length = 1;
|
}
|
else if (codepoint < 0x800)
|
{
|
/* two bytes, encoding 110xxxxx 10xxxxxx */
|
utf8_length = 2;
|
first_byte_mark = 0xC0; /* 11000000 */
|
}
|
else if (codepoint < 0x10000)
|
{
|
/* three bytes, encoding 1110xxxx 10xxxxxx 10xxxxxx */
|
utf8_length = 3;
|
first_byte_mark = 0xE0; /* 11100000 */
|
}
|
else if (codepoint <= 0x10FFFF)
|
{
|
/* four bytes, encoding 1110xxxx 10xxxxxx 10xxxxxx 10xxxxxx */
|
utf8_length = 4;
|
first_byte_mark = 0xF0; /* 11110000 */
|
}
|
else
|
{
|
/* invalid unicode codepoint */
|
goto fail;
|
}
|
|
/* encode as utf8 */
|
for (utf8_position = (unsigned char)(utf8_length - 1); utf8_position > 0; utf8_position--)
|
{
|
/* 10xxxxxx */
|
(*output_pointer)[utf8_position] = (unsigned char)((codepoint | 0x80) & 0xBF);
|
codepoint >>= 6;
|
}
|
/* encode first byte */
|
if (utf8_length > 1)
|
{
|
(*output_pointer)[0] = (unsigned char)((codepoint | first_byte_mark) & 0xFF);
|
}
|
else
|
{
|
(*output_pointer)[0] = (unsigned char)(codepoint & 0x7F);
|
}
|
|
*output_pointer += utf8_length;
|
|
return sequence_length;
|
|
fail:
|
return 0;
|
}
|
|
/* Parse the input text into an unescaped cinput, and populate item. */
|
static cJSON_bool parse_string(cJSON * const item, parse_buffer * const input_buffer)
|
{
|
const unsigned char *input_pointer = buffer_at_offset(input_buffer) + 1;
|
const unsigned char *input_end = buffer_at_offset(input_buffer) + 1;
|
unsigned char *output_pointer = NULL;
|
unsigned char *output = NULL;
|
|
/* not a string */
|
if (buffer_at_offset(input_buffer)[0] != '\"')
|
{
|
goto fail;
|
}
|
|
{
|
/* calculate approximate size of the output (overestimate) */
|
size_t allocation_length = 0;
|
size_t skipped_bytes = 0;
|
while (((size_t)(input_end - input_buffer->content) < input_buffer->length) && (*input_end != '\"'))
|
{
|
/* is escape sequence */
|
if (input_end[0] == '\\')
|
{
|
if ((size_t)(input_end + 1 - input_buffer->content) >= input_buffer->length)
|
{
|
/* prevent buffer overflow when last input character is a backslash */
|
goto fail;
|
}
|
skipped_bytes++;
|
input_end++;
|
}
|
input_end++;
|
}
|
if (((size_t)(input_end - input_buffer->content) >= input_buffer->length) || (*input_end != '\"'))
|
{
|
goto fail; /* string ended unexpectedly */
|
}
|
|
/* This is at most how much we need for the output */
|
allocation_length = (size_t) (input_end - buffer_at_offset(input_buffer)) - skipped_bytes;
|
output = (unsigned char*)input_buffer->hooks.allocate(allocation_length + sizeof(""));
|
if (output == NULL)
|
{
|
goto fail; /* allocation failure */
|
}
|
}
|
|
output_pointer = output;
|
/* loop through the string literal */
|
while (input_pointer < input_end)
|
{
|
if (*input_pointer != '\\')
|
{
|
*output_pointer++ = *input_pointer++;
|
}
|
/* escape sequence */
|
else
|
{
|
unsigned char sequence_length = 2;
|
if ((input_end - input_pointer) < 1)
|
{
|
goto fail;
|
}
|
|
switch (input_pointer[1])
|
{
|
case 'b':
|
*output_pointer++ = '\b';
|
break;
|
case 'f':
|
*output_pointer++ = '\f';
|
break;
|
case 'n':
|
*output_pointer++ = '\n';
|
break;
|
case 'r':
|
*output_pointer++ = '\r';
|
break;
|
case 't':
|
*output_pointer++ = '\t';
|
break;
|
case '\"':
|
case '\\':
|
case '/':
|
*output_pointer++ = input_pointer[1];
|
break;
|
|
/* UTF-16 literal */
|
case 'u':
|
sequence_length = utf16_literal_to_utf8(input_pointer, input_end, &output_pointer);
|
if (sequence_length == 0)
|
{
|
/* failed to convert UTF16-literal to UTF-8 */
|
goto fail;
|
}
|
break;
|
|
default:
|
goto fail;
|
}
|
input_pointer += sequence_length;
|
}
|
}
|
|
/* zero terminate the output */
|
*output_pointer = '\0';
|
|
item->type = cJSON_String;
|
item->valuestring = (char*)output;
|
|
input_buffer->offset = (size_t) (input_end - input_buffer->content);
|
input_buffer->offset++;
|
|
return true;
|
|
fail:
|
if (output != NULL)
|
{
|
input_buffer->hooks.deallocate(output);
|
}
|
|
if (input_pointer != NULL)
|
{
|
input_buffer->offset = (size_t)(input_pointer - input_buffer->content);
|
}
|
|
return false;
|
}
|
|
/* Render the cstring provided to an escaped version that can be printed. */
|
static cJSON_bool print_string_ptr(const unsigned char * const input, printbuffer * const output_buffer)
|
{
|
const unsigned char *input_pointer = NULL;
|
unsigned char *output = NULL;
|
unsigned char *output_pointer = NULL;
|
size_t output_length = 0;
|
/* numbers of additional characters needed for escaping */
|
size_t escape_characters = 0;
|
|
if (output_buffer == NULL)
|
{
|
return false;
|
}
|
|
/* empty string */
|
if (input == NULL)
|
{
|
output = ensure(output_buffer, sizeof("\"\""));
|
if (output == NULL)
|
{
|
return false;
|
}
|
strcpy((char*)output, "\"\"");
|
|
return true;
|
}
|
|
/* set "flag" to 1 if something needs to be escaped */
|
for (input_pointer = input; *input_pointer; input_pointer++)
|
{
|
switch (*input_pointer)
|
{
|
case '\"':
|
case '\\':
|
case '\b':
|
case '\f':
|
case '\n':
|
case '\r':
|
case '\t':
|
/* one character escape sequence */
|
escape_characters++;
|
break;
|
default:
|
if (*input_pointer < 32)
|
{
|
/* UTF-16 escape sequence uXXXX */
|
escape_characters += 5;
|
}
|
break;
|
}
|
}
|
output_length = (size_t)(input_pointer - input) + escape_characters;
|
|
output = ensure(output_buffer, output_length + sizeof("\"\""));
|
if (output == NULL)
|
{
|
return false;
|
}
|
|
/* no characters have to be escaped */
|
if (escape_characters == 0)
|
{
|
output[0] = '\"';
|
memcpy(output + 1, input, output_length);
|
output[output_length + 1] = '\"';
|
output[output_length + 2] = '\0';
|
|
return true;
|
}
|
|
output[0] = '\"';
|
output_pointer = output + 1;
|
/* copy the string */
|
for (input_pointer = input; *input_pointer != '\0'; (void)input_pointer++, output_pointer++)
|
{
|
if ((*input_pointer > 31) && (*input_pointer != '\"') && (*input_pointer != '\\'))
|
{
|
/* normal character, copy */
|
*output_pointer = *input_pointer;
|
}
|
else
|
{
|
/* character needs to be escaped */
|
*output_pointer++ = '\\';
|
switch (*input_pointer)
|
{
|
case '\\':
|
*output_pointer = '\\';
|
break;
|
case '\"':
|
*output_pointer = '\"';
|
break;
|
case '\b':
|
*output_pointer = 'b';
|
break;
|
case '\f':
|
*output_pointer = 'f';
|
break;
|
case '\n':
|
*output_pointer = 'n';
|
break;
|
case '\r':
|
*output_pointer = 'r';
|
break;
|
case '\t':
|
*output_pointer = 't';
|
break;
|
default:
|
/* escape and print as unicode codepoint */
|
sprintf((char*)output_pointer, "u%04x", *input_pointer);
|
output_pointer += 4;
|
break;
|
}
|
}
|
}
|
output[output_length + 1] = '\"';
|
output[output_length + 2] = '\0';
|
|
return true;
|
}
|
|
/* Invoke print_string_ptr (which is useful) on an item. */
|
static cJSON_bool print_string(const cJSON * const item, printbuffer * const p)
|
{
|
return print_string_ptr((unsigned char*)item->valuestring, p);
|
}
|
|
/* Predeclare these prototypes. */
|
static cJSON_bool parse_value(cJSON * const item, parse_buffer * const input_buffer);
|
static cJSON_bool print_value(const cJSON * const item, printbuffer * const output_buffer);
|
static cJSON_bool parse_array(cJSON * const item, parse_buffer * const input_buffer);
|
static cJSON_bool print_array(const cJSON * const item, printbuffer * const output_buffer);
|
static cJSON_bool parse_object(cJSON * const item, parse_buffer * const input_buffer);
|
static cJSON_bool print_object(const cJSON * const item, printbuffer * const output_buffer);
|
|
/* Utility to jump whitespace and cr/lf */
|
static parse_buffer *buffer_skip_whitespace(parse_buffer * const buffer)
|
{
|
if ((buffer == NULL) || (buffer->content == NULL))
|
{
|
return NULL;
|
}
|
|
if (cannot_access_at_index(buffer, 0))
|
{
|
return buffer;
|
}
|
|
while (can_access_at_index(buffer, 0) && (buffer_at_offset(buffer)[0] <= 32))
|
{
|
buffer->offset++;
|
}
|
|
if (buffer->offset == buffer->length)
|
{
|
buffer->offset--;
|
}
|
|
return buffer;
|
}
|
|
/* skip the UTF-8 BOM (byte order mark) if it is at the beginning of a buffer */
|
static parse_buffer *skip_utf8_bom(parse_buffer * const buffer)
|
{
|
if ((buffer == NULL) || (buffer->content == NULL) || (buffer->offset != 0))
|
{
|
return NULL;
|
}
|
|
if (can_access_at_index(buffer, 4) && (strncmp((const char*)buffer_at_offset(buffer), "\xEF\xBB\xBF", 3) == 0))
|
{
|
buffer->offset += 3;
|
}
|
|
return buffer;
|
}
|
|
CJSON_PUBLIC(cJSON *) cJSON_ParseWithOpts(const char *value, const char **return_parse_end, cJSON_bool require_null_terminated)
|
{
|
size_t buffer_length;
|
|
if (NULL == value)
|
{
|
return NULL;
|
}
|
|
/* Adding null character size due to require_null_terminated. */
|
buffer_length = strlen(value) + sizeof("");
|
|
return cJSON_ParseWithLengthOpts(value, buffer_length, return_parse_end, require_null_terminated);
|
}
|
|
/* Parse an object - create a new root, and populate. */
|
CJSON_PUBLIC(cJSON *) cJSON_ParseWithLengthOpts(const char *value, size_t buffer_length, const char **return_parse_end, cJSON_bool require_null_terminated)
|
{
|
parse_buffer buffer = { 0, 0, 0, 0, { 0, 0, 0 } };
|
cJSON *item = NULL;
|
|
/* reset error position */
|
global_error.json = NULL;
|
global_error.position = 0;
|
|
if (value == NULL || 0 == buffer_length)
|
{
|
goto fail;
|
}
|
|
buffer.content = (const unsigned char*)value;
|
buffer.length = buffer_length;
|
buffer.offset = 0;
|
buffer.hooks = global_hooks;
|
|
item = cJSON_New_Item(&global_hooks);
|
if (item == NULL) /* memory fail */
|
{
|
goto fail;
|
}
|
|
if (!parse_value(item, buffer_skip_whitespace(skip_utf8_bom(&buffer))))
|
{
|
/* parse failure. ep is set. */
|
goto fail;
|
}
|
|
/* if we require null-terminated JSON without appended garbage, skip and then check for a null terminator */
|
if (require_null_terminated)
|
{
|
buffer_skip_whitespace(&buffer);
|
if ((buffer.offset >= buffer.length) || buffer_at_offset(&buffer)[0] != '\0')
|
{
|
goto fail;
|
}
|
}
|
if (return_parse_end)
|
{
|
*return_parse_end = (const char*)buffer_at_offset(&buffer);
|
}
|
|
return item;
|
|
fail:
|
if (item != NULL)
|
{
|
cJSON_Delete(item);
|
}
|
|
if (value != NULL)
|
{
|
error local_error;
|
local_error.json = (const unsigned char*)value;
|
local_error.position = 0;
|
|
if (buffer.offset < buffer.length)
|
{
|
local_error.position = buffer.offset;
|
}
|
else if (buffer.length > 0)
|
{
|
local_error.position = buffer.length - 1;
|
}
|
|
if (return_parse_end != NULL)
|
{
|
*return_parse_end = (const char*)local_error.json + local_error.position;
|
}
|
|
global_error = local_error;
|
}
|
|
return NULL;
|
}
|
|
/* Default options for cJSON_Parse */
|
CJSON_PUBLIC(cJSON *) cJSON_Parse(const char *value)
|
{
|
return cJSON_ParseWithOpts(value, 0, 0);
|
}
|
|
CJSON_PUBLIC(cJSON *) cJSON_ParseWithLength(const char *value, size_t buffer_length)
|
{
|
return cJSON_ParseWithLengthOpts(value, buffer_length, 0, 0);
|
}
|
|
#define cjson_min(a, b) (((a) < (b)) ? (a) : (b))
|
|
static unsigned char *print(const cJSON * const item, cJSON_bool format, const internal_hooks * const hooks)
|
{
|
static const size_t default_buffer_size = 256;
|
printbuffer buffer[1];
|
unsigned char *printed = NULL;
|
|
memset(buffer, 0, sizeof(buffer));
|
|
/* create buffer */
|
buffer->buffer = (unsigned char*) hooks->allocate(default_buffer_size);
|
buffer->length = default_buffer_size;
|
buffer->format = format;
|
buffer->hooks = *hooks;
|
if (buffer->buffer == NULL)
|
{
|
goto fail;
|
}
|
|
/* print the value */
|
if (!print_value(item, buffer))
|
{
|
goto fail;
|
}
|
update_offset(buffer);
|
|
/* check if reallocate is available */
|
if (hooks->reallocate != NULL)
|
{
|
printed = (unsigned char*) hooks->reallocate(buffer->buffer, buffer->offset + 1);
|
if (printed == NULL) {
|
goto fail;
|
}
|
buffer->buffer = NULL;
|
}
|
else /* otherwise copy the JSON over to a new buffer */
|
{
|
printed = (unsigned char*) hooks->allocate(buffer->offset + 1);
|
if (printed == NULL)
|
{
|
goto fail;
|
}
|
memcpy(printed, buffer->buffer, cjson_min(buffer->length, buffer->offset + 1));
|
printed[buffer->offset] = '\0'; /* just to be sure */
|
|
/* free the buffer */
|
hooks->deallocate(buffer->buffer);
|
}
|
|
return printed;
|
|
fail:
|
if (buffer->buffer != NULL)
|
{
|
hooks->deallocate(buffer->buffer);
|
}
|
|
if (printed != NULL)
|
{
|
hooks->deallocate(printed);
|
}
|
|
return NULL;
|
}
|
|
/* Render a cJSON item/entity/structure to text. */
|
CJSON_PUBLIC(char *) cJSON_Print(const cJSON *item)
|
{
|
return (char*)print(item, true, &global_hooks);
|
}
|
|
CJSON_PUBLIC(char *) cJSON_PrintUnformatted(const cJSON *item)
|
{
|
return (char*)print(item, false, &global_hooks);
|
}
|
|
CJSON_PUBLIC(char *) cJSON_PrintBuffered(const cJSON *item, int prebuffer, cJSON_bool fmt)
|
{
|
printbuffer p = { 0, 0, 0, 0, 0, 0, { 0, 0, 0 } };
|
|
if (prebuffer < 0)
|
{
|
return NULL;
|
}
|
|
p.buffer = (unsigned char*)global_hooks.allocate((size_t)prebuffer);
|
if (!p.buffer)
|
{
|
return NULL;
|
}
|
|
p.length = (size_t)prebuffer;
|
p.offset = 0;
|
p.noalloc = false;
|
p.format = fmt;
|
p.hooks = global_hooks;
|
|
if (!print_value(item, &p))
|
{
|
global_hooks.deallocate(p.buffer);
|
return NULL;
|
}
|
|
return (char*)p.buffer;
|
}
|
|
CJSON_PUBLIC(cJSON_bool) cJSON_PrintPreallocated(cJSON *item, char *buffer, const int length, const cJSON_bool format)
|
{
|
printbuffer p = { 0, 0, 0, 0, 0, 0, { 0, 0, 0 } };
|
|
if ((length < 0) || (buffer == NULL))
|
{
|
return false;
|
}
|
|
p.buffer = (unsigned char*)buffer;
|
p.length = (size_t)length;
|
p.offset = 0;
|
p.noalloc = true;
|
p.format = format;
|
p.hooks = global_hooks;
|
|
return print_value(item, &p);
|
}
|
|
/* Parser core - when encountering text, process appropriately. */
|
static cJSON_bool parse_value(cJSON * const item, parse_buffer * const input_buffer)
|
{
|
if ((input_buffer == NULL) || (input_buffer->content == NULL))
|
{
|
return false; /* no input */
|
}
|
|
/* parse the different types of values */
|
/* null */
|
if (can_read(input_buffer, 4) && (strncmp((const char*)buffer_at_offset(input_buffer), "null", 4) == 0))
|
{
|
item->type = cJSON_NULL;
|
input_buffer->offset += 4;
|
return true;
|
}
|
/* false */
|
if (can_read(input_buffer, 5) && (strncmp((const char*)buffer_at_offset(input_buffer), "false", 5) == 0))
|
{
|
item->type = cJSON_False;
|
input_buffer->offset += 5;
|
return true;
|
}
|
/* true */
|
if (can_read(input_buffer, 4) && (strncmp((const char*)buffer_at_offset(input_buffer), "true", 4) == 0))
|
{
|
item->type = cJSON_True;
|
item->valueint = 1;
|
input_buffer->offset += 4;
|
return true;
|
}
|
/* string */
|
if (can_access_at_index(input_buffer, 0) && (buffer_at_offset(input_buffer)[0] == '\"'))
|
{
|
return parse_string(item, input_buffer);
|
}
|
/* number */
|
if (can_access_at_index(input_buffer, 0) && ((buffer_at_offset(input_buffer)[0] == '-') || ((buffer_at_offset(input_buffer)[0] >= '0') && (buffer_at_offset(input_buffer)[0] <= '9'))))
|
{
|
return parse_number(item, input_buffer);
|
}
|
/* array */
|
if (can_access_at_index(input_buffer, 0) && (buffer_at_offset(input_buffer)[0] == '['))
|
{
|
return parse_array(item, input_buffer);
|
}
|
/* object */
|
if (can_access_at_index(input_buffer, 0) && (buffer_at_offset(input_buffer)[0] == '{'))
|
{
|
return parse_object(item, input_buffer);
|
}
|
|
return false;
|
}
|
|
/* Render a value to text. */
|
static cJSON_bool print_value(const cJSON * const item, printbuffer * const output_buffer)
|
{
|
unsigned char *output = NULL;
|
|
if ((item == NULL) || (output_buffer == NULL))
|
{
|
return false;
|
}
|
|
switch ((item->type) & 0xFF)
|
{
|
case cJSON_NULL:
|
output = ensure(output_buffer, 5);
|
if (output == NULL)
|
{
|
return false;
|
}
|
strcpy((char*)output, "null");
|
return true;
|
|
case cJSON_False:
|
output = ensure(output_buffer, 6);
|
if (output == NULL)
|
{
|
return false;
|
}
|
strcpy((char*)output, "false");
|
return true;
|
|
case cJSON_True:
|
output = ensure(output_buffer, 5);
|
if (output == NULL)
|
{
|
return false;
|
}
|
strcpy((char*)output, "true");
|
return true;
|
|
case cJSON_Number:
|
return print_number(item, output_buffer);
|
|
case cJSON_Raw:
|
{
|
size_t raw_length = 0;
|
if (item->valuestring == NULL)
|
{
|
return false;
|
}
|
|
raw_length = strlen(item->valuestring) + sizeof("");
|
output = ensure(output_buffer, raw_length);
|
if (output == NULL)
|
{
|
return false;
|
}
|
memcpy(output, item->valuestring, raw_length);
|
return true;
|
}
|
|
case cJSON_String:
|
return print_string(item, output_buffer);
|
|
case cJSON_Array:
|
return print_array(item, output_buffer);
|
|
case cJSON_Object:
|
return print_object(item, output_buffer);
|
|
default:
|
return false;
|
}
|
}
|
|
/* Build an array from input text. */
|
static cJSON_bool parse_array(cJSON * const item, parse_buffer * const input_buffer)
|
{
|
cJSON *head = NULL; /* head of the linked list */
|
cJSON *current_item = NULL;
|
|
if (input_buffer->depth >= CJSON_NESTING_LIMIT)
|
{
|
return false; /* to deeply nested */
|
}
|
input_buffer->depth++;
|
|
if (buffer_at_offset(input_buffer)[0] != '[')
|
{
|
/* not an array */
|
goto fail;
|
}
|
|
input_buffer->offset++;
|
buffer_skip_whitespace(input_buffer);
|
if (can_access_at_index(input_buffer, 0) && (buffer_at_offset(input_buffer)[0] == ']'))
|
{
|
/* empty array */
|
goto success;
|
}
|
|
/* check if we skipped to the end of the buffer */
|
if (cannot_access_at_index(input_buffer, 0))
|
{
|
input_buffer->offset--;
|
goto fail;
|
}
|
|
/* step back to character in front of the first element */
|
input_buffer->offset--;
|
/* loop through the comma separated array elements */
|
do
|
{
|
/* allocate next item */
|
cJSON *new_item = cJSON_New_Item(&(input_buffer->hooks));
|
if (new_item == NULL)
|
{
|
goto fail; /* allocation failure */
|
}
|
|
/* attach next item to list */
|
if (head == NULL)
|
{
|
/* start the linked list */
|
current_item = head = new_item;
|
}
|
else
|
{
|
/* add to the end and advance */
|
current_item->next = new_item;
|
new_item->prev = current_item;
|
current_item = new_item;
|
}
|
|
/* parse next value */
|
input_buffer->offset++;
|
buffer_skip_whitespace(input_buffer);
|
if (!parse_value(current_item, input_buffer))
|
{
|
goto fail; /* failed to parse value */
|
}
|
buffer_skip_whitespace(input_buffer);
|
}
|
while (can_access_at_index(input_buffer, 0) && (buffer_at_offset(input_buffer)[0] == ','));
|
|
if (cannot_access_at_index(input_buffer, 0) || buffer_at_offset(input_buffer)[0] != ']')
|
{
|
goto fail; /* expected end of array */
|
}
|
|
success:
|
input_buffer->depth--;
|
|
if (head != NULL) {
|
head->prev = current_item;
|
}
|
|
item->type = cJSON_Array;
|
item->child = head;
|
|
input_buffer->offset++;
|
|
return true;
|
|
fail:
|
if (head != NULL)
|
{
|
cJSON_Delete(head);
|
}
|
|
return false;
|
}
|
|
/* Render an array to text */
|
static cJSON_bool print_array(const cJSON * const item, printbuffer * const output_buffer)
|
{
|
unsigned char *output_pointer = NULL;
|
size_t length = 0;
|
cJSON *current_element = item->child;
|
|
if (output_buffer == NULL)
|
{
|
return false;
|
}
|
|
/* Compose the output array. */
|
/* opening square bracket */
|
output_pointer = ensure(output_buffer, 1);
|
if (output_pointer == NULL)
|
{
|
return false;
|
}
|
|
*output_pointer = '[';
|
output_buffer->offset++;
|
output_buffer->depth++;
|
|
while (current_element != NULL)
|
{
|
if (!print_value(current_element, output_buffer))
|
{
|
return false;
|
}
|
update_offset(output_buffer);
|
if (current_element->next)
|
{
|
length = (size_t) (output_buffer->format ? 2 : 1);
|
output_pointer = ensure(output_buffer, length + 1);
|
if (output_pointer == NULL)
|
{
|
return false;
|
}
|
*output_pointer++ = ',';
|
if(output_buffer->format)
|
{
|
*output_pointer++ = ' ';
|
}
|
*output_pointer = '\0';
|
output_buffer->offset += length;
|
}
|
current_element = current_element->next;
|
}
|
|
output_pointer = ensure(output_buffer, 2);
|
if (output_pointer == NULL)
|
{
|
return false;
|
}
|
*output_pointer++ = ']';
|
*output_pointer = '\0';
|
output_buffer->depth--;
|
|
return true;
|
}
|
|
/* Build an object from the text. */
|
static cJSON_bool parse_object(cJSON * const item, parse_buffer * const input_buffer)
|
{
|
cJSON *head = NULL; /* linked list head */
|
cJSON *current_item = NULL;
|
|
if (input_buffer->depth >= CJSON_NESTING_LIMIT)
|
{
|
return false; /* to deeply nested */
|
}
|
input_buffer->depth++;
|
|
if (cannot_access_at_index(input_buffer, 0) || (buffer_at_offset(input_buffer)[0] != '{'))
|
{
|
goto fail; /* not an object */
|
}
|
|
input_buffer->offset++;
|
buffer_skip_whitespace(input_buffer);
|
if (can_access_at_index(input_buffer, 0) && (buffer_at_offset(input_buffer)[0] == '}'))
|
{
|
goto success; /* empty object */
|
}
|
|
/* check if we skipped to the end of the buffer */
|
if (cannot_access_at_index(input_buffer, 0))
|
{
|
input_buffer->offset--;
|
goto fail;
|
}
|
|
/* step back to character in front of the first element */
|
input_buffer->offset--;
|
/* loop through the comma separated array elements */
|
do
|
{
|
/* allocate next item */
|
cJSON *new_item = cJSON_New_Item(&(input_buffer->hooks));
|
if (new_item == NULL)
|
{
|
goto fail; /* allocation failure */
|
}
|
|
/* attach next item to list */
|
if (head == NULL)
|
{
|
/* start the linked list */
|
current_item = head = new_item;
|
}
|
else
|
{
|
/* add to the end and advance */
|
current_item->next = new_item;
|
new_item->prev = current_item;
|
current_item = new_item;
|
}
|
|
/* parse the name of the child */
|
input_buffer->offset++;
|
buffer_skip_whitespace(input_buffer);
|
if (!parse_string(current_item, input_buffer))
|
{
|
goto fail; /* failed to parse name */
|
}
|
buffer_skip_whitespace(input_buffer);
|
|
/* swap valuestring and string, because we parsed the name */
|
current_item->string = current_item->valuestring;
|
current_item->valuestring = NULL;
|
|
if (cannot_access_at_index(input_buffer, 0) || (buffer_at_offset(input_buffer)[0] != ':'))
|
{
|
goto fail; /* invalid object */
|
}
|
|
/* parse the value */
|
input_buffer->offset++;
|
buffer_skip_whitespace(input_buffer);
|
if (!parse_value(current_item, input_buffer))
|
{
|
goto fail; /* failed to parse value */
|
}
|
buffer_skip_whitespace(input_buffer);
|
}
|
while (can_access_at_index(input_buffer, 0) && (buffer_at_offset(input_buffer)[0] == ','));
|
|
if (cannot_access_at_index(input_buffer, 0) || (buffer_at_offset(input_buffer)[0] != '}'))
|
{
|
goto fail; /* expected end of object */
|
}
|
|
success:
|
input_buffer->depth--;
|
|
if (head != NULL) {
|
head->prev = current_item;
|
}
|
|
item->type = cJSON_Object;
|
item->child = head;
|
|
input_buffer->offset++;
|
return true;
|
|
fail:
|
if (head != NULL)
|
{
|
cJSON_Delete(head);
|
}
|
|
return false;
|
}
|
|
/* Render an object to text. */
|
static cJSON_bool print_object(const cJSON * const item, printbuffer * const output_buffer)
|
{
|
unsigned char *output_pointer = NULL;
|
size_t length = 0;
|
cJSON *current_item = item->child;
|
|
if (output_buffer == NULL)
|
{
|
return false;
|
}
|
|
/* Compose the output: */
|
length = (size_t) (output_buffer->format ? 2 : 1); /* fmt: {\n */
|
output_pointer = ensure(output_buffer, length + 1);
|
if (output_pointer == NULL)
|
{
|
return false;
|
}
|
|
*output_pointer++ = '{';
|
output_buffer->depth++;
|
if (output_buffer->format)
|
{
|
*output_pointer++ = '\n';
|
}
|
output_buffer->offset += length;
|
|
while (current_item)
|
{
|
if (output_buffer->format)
|
{
|
size_t i;
|
output_pointer = ensure(output_buffer, output_buffer->depth);
|
if (output_pointer == NULL)
|
{
|
return false;
|
}
|
for (i = 0; i < output_buffer->depth; i++)
|
{
|
*output_pointer++ = '\t';
|
}
|
output_buffer->offset += output_buffer->depth;
|
}
|
|
/* print key */
|
if (!print_string_ptr((unsigned char*)current_item->string, output_buffer))
|
{
|
return false;
|
}
|
update_offset(output_buffer);
|
|
length = (size_t) (output_buffer->format ? 2 : 1);
|
output_pointer = ensure(output_buffer, length);
|
if (output_pointer == NULL)
|
{
|
return false;
|
}
|
*output_pointer++ = ':';
|
if (output_buffer->format)
|
{
|
*output_pointer++ = '\t';
|
}
|
output_buffer->offset += length;
|
|
/* print value */
|
if (!print_value(current_item, output_buffer))
|
{
|
return false;
|
}
|
update_offset(output_buffer);
|
|
/* print comma if not last */
|
length = ((size_t)(output_buffer->format ? 1 : 0) + (size_t)(current_item->next ? 1 : 0));
|
output_pointer = ensure(output_buffer, length + 1);
|
if (output_pointer == NULL)
|
{
|
return false;
|
}
|
if (current_item->next)
|
{
|
*output_pointer++ = ',';
|
}
|
|
if (output_buffer->format)
|
{
|
*output_pointer++ = '\n';
|
}
|
*output_pointer = '\0';
|
output_buffer->offset += length;
|
|
current_item = current_item->next;
|
}
|
|
output_pointer = ensure(output_buffer, output_buffer->format ? (output_buffer->depth + 1) : 2);
|
if (output_pointer == NULL)
|
{
|
return false;
|
}
|
if (output_buffer->format)
|
{
|
size_t i;
|
for (i = 0; i < (output_buffer->depth - 1); i++)
|
{
|
*output_pointer++ = '\t';
|
}
|
}
|
*output_pointer++ = '}';
|
*output_pointer = '\0';
|
output_buffer->depth--;
|
|
return true;
|
}
|
|
/* Get Array size/item / object item. */
|
CJSON_PUBLIC(int) cJSON_GetArraySize(const cJSON *array)
|
{
|
cJSON *child = NULL;
|
size_t size = 0;
|
|
if (array == NULL)
|
{
|
return 0;
|
}
|
|
child = array->child;
|
|
while(child != NULL)
|
{
|
size++;
|
child = child->next;
|
}
|
|
/* FIXME: Can overflow here. Cannot be fixed without breaking the API */
|
|
return (int)size;
|
}
|
|
static cJSON* get_array_item(const cJSON *array, size_t index)
|
{
|
cJSON *current_child = NULL;
|
|
if (array == NULL)
|
{
|
return NULL;
|
}
|
|
current_child = array->child;
|
while ((current_child != NULL) && (index > 0))
|
{
|
index--;
|
current_child = current_child->next;
|
}
|
|
return current_child;
|
}
|
|
CJSON_PUBLIC(cJSON *) cJSON_GetArrayItem(const cJSON *array, int index)
|
{
|
if (index < 0)
|
{
|
return NULL;
|
}
|
|
return get_array_item(array, (size_t)index);
|
}
|
|
static cJSON *get_object_item(const cJSON * const object, const char * const name, const cJSON_bool case_sensitive)
|
{
|
cJSON *current_element = NULL;
|
|
if ((object == NULL) || (name == NULL))
|
{
|
return NULL;
|
}
|
|
current_element = object->child;
|
if (case_sensitive)
|
{
|
while ((current_element != NULL) && (current_element->string != NULL) && (strcmp(name, current_element->string) != 0))
|
{
|
current_element = current_element->next;
|
}
|
}
|
else
|
{
|
while ((current_element != NULL) && (case_insensitive_strcmp((const unsigned char*)name, (const unsigned char*)(current_element->string)) != 0))
|
{
|
current_element = current_element->next;
|
}
|
}
|
|
if ((current_element == NULL) || (current_element->string == NULL)) {
|
return NULL;
|
}
|
|
return current_element;
|
}
|
|
CJSON_PUBLIC(cJSON *) cJSON_GetObjectItem(const cJSON * const object, const char * const string)
|
{
|
return get_object_item(object, string, false);
|
}
|
|
CJSON_PUBLIC(cJSON *) cJSON_GetObjectItemCaseSensitive(const cJSON * const object, const char * const string)
|
{
|
return get_object_item(object, string, true);
|
}
|
|
CJSON_PUBLIC(cJSON_bool) cJSON_HasObjectItem(const cJSON *object, const char *string)
|
{
|
return cJSON_GetObjectItem(object, string) ? 1 : 0;
|
}
|
|
/* 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(const cJSON *item, const internal_hooks * const hooks)
|
{
|
cJSON *reference = NULL;
|
if (item == NULL)
|
{
|
return NULL;
|
}
|
|
reference = cJSON_New_Item(hooks);
|
if (reference == NULL)
|
{
|
return NULL;
|
}
|
|
memcpy(reference, item, sizeof(cJSON));
|
reference->string = NULL;
|
reference->type |= cJSON_IsReference;
|
reference->next = reference->prev = NULL;
|
return reference;
|
}
|
|
static cJSON_bool add_item_to_array(cJSON *array, cJSON *item)
|
{
|
cJSON *child = NULL;
|
|
if ((item == NULL) || (array == NULL) || (array == item))
|
{
|
return false;
|
}
|
|
child = array->child;
|
/*
|
* To find the last item in array quickly, we use prev in array
|
*/
|
if (child == NULL)
|
{
|
/* list is empty, start new one */
|
array->child = item;
|
item->prev = item;
|
item->next = NULL;
|
}
|
else
|
{
|
/* append to the end */
|
if (child->prev)
|
{
|
suffix_object(child->prev, item);
|
array->child->prev = item;
|
}
|
}
|
|
return true;
|
}
|
|
/* Add item to array/object. */
|
CJSON_PUBLIC(cJSON_bool) cJSON_AddItemToArray(cJSON *array, cJSON *item)
|
{
|
return add_item_to_array(array, item);
|
}
|
|
#if defined(__clang__) || (defined(__GNUC__) && ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ > 5))))
|
#pragma GCC diagnostic push
|
#endif
|
#ifdef __GNUC__
|
#pragma GCC diagnostic ignored "-Wcast-qual"
|
#endif
|
/* helper function to cast away const */
|
static void* cast_away_const(const void* string)
|
{
|
return (void*)string;
|
}
|
#if defined(__clang__) || (defined(__GNUC__) && ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ > 5))))
|
#pragma GCC diagnostic pop
|
#endif
|
|
|
static cJSON_bool add_item_to_object(cJSON * const object, const char * const string, cJSON * const item, const internal_hooks * const hooks, const cJSON_bool constant_key)
|
{
|
char *new_key = NULL;
|
int new_type = cJSON_Invalid;
|
|
if ((object == NULL) || (string == NULL) || (item == NULL) || (object == item))
|
{
|
return false;
|
}
|
|
if (constant_key)
|
{
|
new_key = (char*)cast_away_const(string);
|
new_type = item->type | cJSON_StringIsConst;
|
}
|
else
|
{
|
new_key = (char*)cJSON_strdup((const unsigned char*)string, hooks);
|
if (new_key == NULL)
|
{
|
return false;
|
}
|
|
new_type = item->type & ~cJSON_StringIsConst;
|
}
|
|
if (!(item->type & cJSON_StringIsConst) && (item->string != NULL))
|
{
|
hooks->deallocate(item->string);
|
}
|
|
item->string = new_key;
|
item->type = new_type;
|
|
return add_item_to_array(object, item);
|
}
|
|
CJSON_PUBLIC(cJSON_bool) cJSON_AddItemToObject(cJSON *object, const char *string, cJSON *item)
|
{
|
return add_item_to_object(object, string, item, &global_hooks, false);
|
}
|
|
/* Add an item to an object with constant string as key */
|
CJSON_PUBLIC(cJSON_bool) cJSON_AddItemToObjectCS(cJSON *object, const char *string, cJSON *item)
|
{
|
return add_item_to_object(object, string, item, &global_hooks, true);
|
}
|
|
CJSON_PUBLIC(cJSON_bool) cJSON_AddItemReferenceToArray(cJSON *array, cJSON *item)
|
{
|
if (array == NULL)
|
{
|
return false;
|
}
|
|
return add_item_to_array(array, create_reference(item, &global_hooks));
|
}
|
|
CJSON_PUBLIC(cJSON_bool) cJSON_AddItemReferenceToObject(cJSON *object, const char *string, cJSON *item)
|
{
|
if ((object == NULL) || (string == NULL))
|
{
|
return false;
|
}
|
|
return add_item_to_object(object, string, create_reference(item, &global_hooks), &global_hooks, false);
|
}
|
|
CJSON_PUBLIC(cJSON*) cJSON_AddNullToObject(cJSON * const object, const char * const name)
|
{
|
cJSON *null = cJSON_CreateNull();
|
if (add_item_to_object(object, name, null, &global_hooks, false))
|
{
|
return null;
|
}
|
|
cJSON_Delete(null);
|
return NULL;
|
}
|
|
CJSON_PUBLIC(cJSON*) cJSON_AddTrueToObject(cJSON * const object, const char * const name)
|
{
|
cJSON *true_item = cJSON_CreateTrue();
|
if (add_item_to_object(object, name, true_item, &global_hooks, false))
|
{
|
return true_item;
|
}
|
|
cJSON_Delete(true_item);
|
return NULL;
|
}
|
|
CJSON_PUBLIC(cJSON*) cJSON_AddFalseToObject(cJSON * const object, const char * const name)
|
{
|
cJSON *false_item = cJSON_CreateFalse();
|
if (add_item_to_object(object, name, false_item, &global_hooks, false))
|
{
|
return false_item;
|
}
|
|
cJSON_Delete(false_item);
|
return NULL;
|
}
|
|
CJSON_PUBLIC(cJSON*) cJSON_AddBoolToObject(cJSON * const object, const char * const name, const cJSON_bool boolean)
|
{
|
cJSON *bool_item = cJSON_CreateBool(boolean);
|
if (add_item_to_object(object, name, bool_item, &global_hooks, false))
|
{
|
return bool_item;
|
}
|
|
cJSON_Delete(bool_item);
|
return NULL;
|
}
|
|
CJSON_PUBLIC(cJSON*) cJSON_AddNumberToObject(cJSON * const object, const char * const name, const double number)
|
{
|
cJSON *number_item = cJSON_CreateNumber(number);
|
if (add_item_to_object(object, name, number_item, &global_hooks, false))
|
{
|
return number_item;
|
}
|
|
cJSON_Delete(number_item);
|
return NULL;
|
}
|
|
CJSON_PUBLIC(cJSON*) cJSON_AddStringToObject(cJSON * const object, const char * const name, const char * const string)
|
{
|
cJSON *string_item = cJSON_CreateString(string);
|
if (add_item_to_object(object, name, string_item, &global_hooks, false))
|
{
|
return string_item;
|
}
|
|
cJSON_Delete(string_item);
|
return NULL;
|
}
|
|
CJSON_PUBLIC(cJSON*) cJSON_AddRawToObject(cJSON * const object, const char * const name, const char * const raw)
|
{
|
cJSON *raw_item = cJSON_CreateRaw(raw);
|
if (add_item_to_object(object, name, raw_item, &global_hooks, false))
|
{
|
return raw_item;
|
}
|
|
cJSON_Delete(raw_item);
|
return NULL;
|
}
|
|
CJSON_PUBLIC(cJSON*) cJSON_AddObjectToObject(cJSON * const object, const char * const name)
|
{
|
cJSON *object_item = cJSON_CreateObject();
|
if (add_item_to_object(object, name, object_item, &global_hooks, false))
|
{
|
return object_item;
|
}
|
|
cJSON_Delete(object_item);
|
return NULL;
|
}
|
|
CJSON_PUBLIC(cJSON*) cJSON_AddArrayToObject(cJSON * const object, const char * const name)
|
{
|
cJSON *array = cJSON_CreateArray();
|
if (add_item_to_object(object, name, array, &global_hooks, false))
|
{
|
return array;
|
}
|
|
cJSON_Delete(array);
|
return NULL;
|
}
|
|
CJSON_PUBLIC(cJSON *) cJSON_DetachItemViaPointer(cJSON *parent, cJSON * const item)
|
{
|
if ((parent == NULL) || (item == NULL))
|
{
|
return NULL;
|
}
|
|
if (item != parent->child)
|
{
|
/* not the first element */
|
item->prev->next = item->next;
|
}
|
if (item->next != NULL)
|
{
|
/* not the last element */
|
item->next->prev = item->prev;
|
}
|
|
if (item == parent->child)
|
{
|
/* first element */
|
parent->child = item->next;
|
}
|
else if (item->next == NULL)
|
{
|
/* last element */
|
parent->child->prev = item->prev;
|
}
|
|
/* make sure the detached item doesn't point anywhere anymore */
|
item->prev = NULL;
|
item->next = NULL;
|
|
return item;
|
}
|
|
CJSON_PUBLIC(cJSON *) cJSON_DetachItemFromArray(cJSON *array, int which)
|
{
|
if (which < 0)
|
{
|
return NULL;
|
}
|
|
return cJSON_DetachItemViaPointer(array, get_array_item(array, (size_t)which));
|
}
|
|
CJSON_PUBLIC(void) cJSON_DeleteItemFromArray(cJSON *array, int which)
|
{
|
cJSON_Delete(cJSON_DetachItemFromArray(array, which));
|
}
|
|
CJSON_PUBLIC(cJSON *) cJSON_DetachItemFromObject(cJSON *object, const char *string)
|
{
|
cJSON *to_detach = cJSON_GetObjectItem(object, string);
|
|
return cJSON_DetachItemViaPointer(object, to_detach);
|
}
|
|
CJSON_PUBLIC(cJSON *) cJSON_DetachItemFromObjectCaseSensitive(cJSON *object, const char *string)
|
{
|
cJSON *to_detach = cJSON_GetObjectItemCaseSensitive(object, string);
|
|
return cJSON_DetachItemViaPointer(object, to_detach);
|
}
|
|
CJSON_PUBLIC(void) cJSON_DeleteItemFromObject(cJSON *object, const char *string)
|
{
|
cJSON_Delete(cJSON_DetachItemFromObject(object, string));
|
}
|
|
CJSON_PUBLIC(void) cJSON_DeleteItemFromObjectCaseSensitive(cJSON *object, const char *string)
|
{
|
cJSON_Delete(cJSON_DetachItemFromObjectCaseSensitive(object, string));
|
}
|
|
/* Replace array/object items with new ones. */
|
CJSON_PUBLIC(cJSON_bool) cJSON_InsertItemInArray(cJSON *array, int which, cJSON *newitem)
|
{
|
cJSON *after_inserted = NULL;
|
|
if (which < 0)
|
{
|
return false;
|
}
|
|
after_inserted = get_array_item(array, (size_t)which);
|
if (after_inserted == NULL)
|
{
|
return add_item_to_array(array, newitem);
|
}
|
|
newitem->next = after_inserted;
|
newitem->prev = after_inserted->prev;
|
after_inserted->prev = newitem;
|
if (after_inserted == array->child)
|
{
|
array->child = newitem;
|
}
|
else
|
{
|
newitem->prev->next = newitem;
|
}
|
return true;
|
}
|
|
CJSON_PUBLIC(cJSON_bool) cJSON_ReplaceItemViaPointer(cJSON * const parent, cJSON * const item, cJSON * replacement)
|
{
|
if ((parent == NULL) || (replacement == NULL) || (item == NULL))
|
{
|
return false;
|
}
|
|
if (replacement == item)
|
{
|
return true;
|
}
|
|
replacement->next = item->next;
|
replacement->prev = item->prev;
|
|
if (replacement->next != NULL)
|
{
|
replacement->next->prev = replacement;
|
}
|
if (parent->child == item)
|
{
|
if (parent->child->prev == parent->child)
|
{
|
replacement->prev = replacement;
|
}
|
parent->child = replacement;
|
}
|
else
|
{ /*
|
* To find the last item in array quickly, we use prev in array.
|
* We can't modify the last item's next pointer where this item was the parent's child
|
*/
|
if (replacement->prev != NULL)
|
{
|
replacement->prev->next = replacement;
|
}
|
if (replacement->next == NULL)
|
{
|
parent->child->prev = replacement;
|
}
|
}
|
|
item->next = NULL;
|
item->prev = NULL;
|
cJSON_Delete(item);
|
|
return true;
|
}
|
|
CJSON_PUBLIC(cJSON_bool) cJSON_ReplaceItemInArray(cJSON *array, int which, cJSON *newitem)
|
{
|
if (which < 0)
|
{
|
return false;
|
}
|
|
return cJSON_ReplaceItemViaPointer(array, get_array_item(array, (size_t)which), newitem);
|
}
|
|
static cJSON_bool replace_item_in_object(cJSON *object, const char *string, cJSON *replacement, cJSON_bool case_sensitive)
|
{
|
if ((replacement == NULL) || (string == NULL))
|
{
|
return false;
|
}
|
|
/* replace the name in the replacement */
|
if (!(replacement->type & cJSON_StringIsConst) && (replacement->string != NULL))
|
{
|
cJSON_free(replacement->string);
|
}
|
replacement->string = (char*)cJSON_strdup((const unsigned char*)string, &global_hooks);
|
replacement->type &= ~cJSON_StringIsConst;
|
|
return cJSON_ReplaceItemViaPointer(object, get_object_item(object, string, case_sensitive), replacement);
|
}
|
|
CJSON_PUBLIC(cJSON_bool) cJSON_ReplaceItemInObject(cJSON *object, const char *string, cJSON *newitem)
|
{
|
return replace_item_in_object(object, string, newitem, false);
|
}
|
|
CJSON_PUBLIC(cJSON_bool) cJSON_ReplaceItemInObjectCaseSensitive(cJSON *object, const char *string, cJSON *newitem)
|
{
|
return replace_item_in_object(object, string, newitem, true);
|
}
|
|
/* Create basic types: */
|
CJSON_PUBLIC(cJSON *) cJSON_CreateNull(void)
|
{
|
cJSON *item = cJSON_New_Item(&global_hooks);
|
if(item)
|
{
|
item->type = cJSON_NULL;
|
}
|
|
return item;
|
}
|
|
CJSON_PUBLIC(cJSON *) cJSON_CreateTrue(void)
|
{
|
cJSON *item = cJSON_New_Item(&global_hooks);
|
if(item)
|
{
|
item->type = cJSON_True;
|
}
|
|
return item;
|
}
|
|
CJSON_PUBLIC(cJSON *) cJSON_CreateFalse(void)
|
{
|
cJSON *item = cJSON_New_Item(&global_hooks);
|
if(item)
|
{
|
item->type = cJSON_False;
|
}
|
|
return item;
|
}
|
|
CJSON_PUBLIC(cJSON *) cJSON_CreateBool(cJSON_bool boolean)
|
{
|
cJSON *item = cJSON_New_Item(&global_hooks);
|
if(item)
|
{
|
item->type = boolean ? cJSON_True : cJSON_False;
|
}
|
|
return item;
|
}
|
|
CJSON_PUBLIC(cJSON *) cJSON_CreateNumber(double num)
|
{
|
cJSON *item = cJSON_New_Item(&global_hooks);
|
if(item)
|
{
|
item->type = cJSON_Number;
|
item->valuedouble = num;
|
|
/* use saturation in case of overflow */
|
if (num >= INT_MAX)
|
{
|
item->valueint = INT_MAX;
|
}
|
else if (num <= (double)INT_MIN)
|
{
|
item->valueint = INT_MIN;
|
}
|
else
|
{
|
item->valueint = (int)num;
|
}
|
}
|
|
return item;
|
}
|
|
CJSON_PUBLIC(cJSON *) cJSON_CreateString(const char *string)
|
{
|
cJSON *item = cJSON_New_Item(&global_hooks);
|
if(item)
|
{
|
item->type = cJSON_String;
|
item->valuestring = (char*)cJSON_strdup((const unsigned char*)string, &global_hooks);
|
if(!item->valuestring)
|
{
|
cJSON_Delete(item);
|
return NULL;
|
}
|
}
|
|
return item;
|
}
|
|
CJSON_PUBLIC(cJSON *) cJSON_CreateStringReference(const char *string)
|
{
|
cJSON *item = cJSON_New_Item(&global_hooks);
|
if (item != NULL)
|
{
|
item->type = cJSON_String | cJSON_IsReference;
|
item->valuestring = (char*)cast_away_const(string);
|
}
|
|
return item;
|
}
|
|
CJSON_PUBLIC(cJSON *) cJSON_CreateObjectReference(const cJSON *child)
|
{
|
cJSON *item = cJSON_New_Item(&global_hooks);
|
if (item != NULL) {
|
item->type = cJSON_Object | cJSON_IsReference;
|
item->child = (cJSON*)cast_away_const(child);
|
}
|
|
return item;
|
}
|
|
CJSON_PUBLIC(cJSON *) cJSON_CreateArrayReference(const cJSON *child) {
|
cJSON *item = cJSON_New_Item(&global_hooks);
|
if (item != NULL) {
|
item->type = cJSON_Array | cJSON_IsReference;
|
item->child = (cJSON*)cast_away_const(child);
|
}
|
|
return item;
|
}
|
|
CJSON_PUBLIC(cJSON *) cJSON_CreateRaw(const char *raw)
|
{
|
cJSON *item = cJSON_New_Item(&global_hooks);
|
if(item)
|
{
|
item->type = cJSON_Raw;
|
item->valuestring = (char*)cJSON_strdup((const unsigned char*)raw, &global_hooks);
|
if(!item->valuestring)
|
{
|
cJSON_Delete(item);
|
return NULL;
|
}
|
}
|
|
return item;
|
}
|
|
CJSON_PUBLIC(cJSON *) cJSON_CreateArray(void)
|
{
|
cJSON *item = cJSON_New_Item(&global_hooks);
|
if(item)
|
{
|
item->type=cJSON_Array;
|
}
|
|
return item;
|
}
|
|
CJSON_PUBLIC(cJSON *) cJSON_CreateObject(void)
|
{
|
cJSON *item = cJSON_New_Item(&global_hooks);
|
if (item)
|
{
|
item->type = cJSON_Object;
|
}
|
|
return item;
|
}
|
|
/* Create Arrays: */
|
CJSON_PUBLIC(cJSON *) cJSON_CreateIntArray(const int *numbers, int count)
|
{
|
size_t i = 0;
|
cJSON *n = NULL;
|
cJSON *p = NULL;
|
cJSON *a = NULL;
|
|
if ((count < 0) || (numbers == NULL))
|
{
|
return NULL;
|
}
|
|
a = cJSON_CreateArray();
|
if (!a)
|
{
|
return NULL;
|
}
|
|
for(i = 0; i < (size_t)count; i++)
|
{
|
n = cJSON_CreateNumber(numbers[i]);
|
if (!n)
|
{
|
cJSON_Delete(a);
|
return NULL;
|
}
|
if(!i)
|
{
|
a->child = n;
|
}
|
else
|
{
|
suffix_object(p, n);
|
}
|
p = n;
|
}
|
a->child->prev = n;
|
|
return a;
|
}
|
|
CJSON_PUBLIC(cJSON *) cJSON_CreateFloatArray(const float *numbers, int count)
|
{
|
size_t i = 0;
|
cJSON *n = NULL;
|
cJSON *p = NULL;
|
cJSON *a = NULL;
|
|
if ((count < 0) || (numbers == NULL))
|
{
|
return NULL;
|
}
|
|
a = cJSON_CreateArray();
|
if (!a)
|
{
|
return NULL;
|
}
|
|
for(i = 0; i < (size_t)count; i++)
|
{
|
n = cJSON_CreateNumber((double)numbers[i]);
|
if(!n)
|
{
|
cJSON_Delete(a);
|
return NULL;
|
}
|
if(!i)
|
{
|
a->child = n;
|
}
|
else
|
{
|
suffix_object(p, n);
|
}
|
p = n;
|
}
|
a->child->prev = n;
|
|
return a;
|
}
|
|
CJSON_PUBLIC(cJSON *) cJSON_CreateDoubleArray(const double *numbers, int count)
|
{
|
size_t i = 0;
|
cJSON *n = NULL;
|
cJSON *p = NULL;
|
cJSON *a = NULL;
|
|
if ((count < 0) || (numbers == NULL))
|
{
|
return NULL;
|
}
|
|
a = cJSON_CreateArray();
|
if (!a)
|
{
|
return NULL;
|
}
|
|
for(i = 0; i < (size_t)count; i++)
|
{
|
n = cJSON_CreateNumber(numbers[i]);
|
if(!n)
|
{
|
cJSON_Delete(a);
|
return NULL;
|
}
|
if(!i)
|
{
|
a->child = n;
|
}
|
else
|
{
|
suffix_object(p, n);
|
}
|
p = n;
|
}
|
a->child->prev = n;
|
|
return a;
|
}
|
|
CJSON_PUBLIC(cJSON *) cJSON_CreateStringArray(const char *const *strings, int count)
|
{
|
size_t i = 0;
|
cJSON *n = NULL;
|
cJSON *p = NULL;
|
cJSON *a = NULL;
|
|
if ((count < 0) || (strings == NULL))
|
{
|
return NULL;
|
}
|
|
a = cJSON_CreateArray();
|
if (!a)
|
{
|
return NULL;
|
}
|
|
for (i = 0; i < (size_t)count; i++)
|
{
|
n = cJSON_CreateString(strings[i]);
|
if(!n)
|
{
|
cJSON_Delete(a);
|
return NULL;
|
}
|
if(!i)
|
{
|
a->child = n;
|
}
|
else
|
{
|
suffix_object(p,n);
|
}
|
p = n;
|
}
|
a->child->prev = n;
|
|
return a;
|
}
|
|
/* Duplication */
|
CJSON_PUBLIC(cJSON *) cJSON_Duplicate(const cJSON *item, cJSON_bool recurse)
|
{
|
cJSON *newitem = NULL;
|
cJSON *child = NULL;
|
cJSON *next = NULL;
|
cJSON *newchild = NULL;
|
|
/* Bail on bad ptr */
|
if (!item)
|
{
|
goto fail;
|
}
|
/* Create new item */
|
newitem = cJSON_New_Item(&global_hooks);
|
if (!newitem)
|
{
|
goto fail;
|
}
|
/* Copy over all vars */
|
newitem->type = item->type & (~cJSON_IsReference);
|
newitem->valueint = item->valueint;
|
newitem->valuedouble = item->valuedouble;
|
if (item->valuestring)
|
{
|
newitem->valuestring = (char*)cJSON_strdup((unsigned char*)item->valuestring, &global_hooks);
|
if (!newitem->valuestring)
|
{
|
goto fail;
|
}
|
}
|
if (item->string)
|
{
|
newitem->string = (item->type&cJSON_StringIsConst) ? item->string : (char*)cJSON_strdup((unsigned char*)item->string, &global_hooks);
|
if (!newitem->string)
|
{
|
goto fail;
|
}
|
}
|
/* If non-recursive, then we're done! */
|
if (!recurse)
|
{
|
return newitem;
|
}
|
/* Walk the ->next chain for the child. */
|
child = item->child;
|
while (child != NULL)
|
{
|
newchild = cJSON_Duplicate(child, true); /* Duplicate (with recurse) each item in the ->next chain */
|
if (!newchild)
|
{
|
goto fail;
|
}
|
if (next != NULL)
|
{
|
/* If newitem->child already set, then crosswire ->prev and ->next and move on */
|
next->next = newchild;
|
newchild->prev = next;
|
next = newchild;
|
}
|
else
|
{
|
/* Set newitem->child and move to it */
|
newitem->child = newchild;
|
next = newchild;
|
}
|
child = child->next;
|
}
|
if (newitem && newitem->child)
|
{
|
newitem->child->prev = newchild;
|
}
|
|
return newitem;
|
|
fail:
|
if (newitem != NULL)
|
{
|
cJSON_Delete(newitem);
|
}
|
|
return NULL;
|
}
|
|
static void skip_oneline_comment(char **input)
|
{
|
*input += static_strlen("//");
|
|
for (; (*input)[0] != '\0'; ++(*input))
|
{
|
if ((*input)[0] == '\n') {
|
*input += static_strlen("\n");
|
return;
|
}
|
}
|
}
|
|
static void skip_multiline_comment(char **input)
|
{
|
*input += static_strlen("/*");
|
|
for (; (*input)[0] != '\0'; ++(*input))
|
{
|
if (((*input)[0] == '*') && ((*input)[1] == '/'))
|
{
|
*input += static_strlen("*/");
|
return;
|
}
|
}
|
}
|
|
static void minify_string(char **input, char **output) {
|
(*output)[0] = (*input)[0];
|
*input += static_strlen("\"");
|
*output += static_strlen("\"");
|
|
|
for (; (*input)[0] != '\0'; (void)++(*input), ++(*output)) {
|
(*output)[0] = (*input)[0];
|
|
if ((*input)[0] == '\"') {
|
(*output)[0] = '\"';
|
*input += static_strlen("\"");
|
*output += static_strlen("\"");
|
return;
|
} else if (((*input)[0] == '\\') && ((*input)[1] == '\"')) {
|
(*output)[1] = (*input)[1];
|
*input += static_strlen("\"");
|
*output += static_strlen("\"");
|
}
|
}
|
}
|
|
CJSON_PUBLIC(void) cJSON_Minify(char *json)
|
{
|
char *into = json;
|
|
if (json == NULL)
|
{
|
return;
|
}
|
|
while (json[0] != '\0')
|
{
|
switch (json[0])
|
{
|
case ' ':
|
case '\t':
|
case '\r':
|
case '\n':
|
json++;
|
break;
|
|
case '/':
|
if (json[1] == '/')
|
{
|
skip_oneline_comment(&json);
|
}
|
else if (json[1] == '*')
|
{
|
skip_multiline_comment(&json);
|
} else {
|
json++;
|
}
|
break;
|
|
case '\"':
|
minify_string(&json, (char**)&into);
|
break;
|
|
default:
|
into[0] = json[0];
|
json++;
|
into++;
|
}
|
}
|
|
/* and null-terminate. */
|
*into = '\0';
|
}
|
|
CJSON_PUBLIC(cJSON_bool) cJSON_IsInvalid(const cJSON * const item)
|
{
|
if (item == NULL)
|
{
|
return false;
|
}
|
|
return (item->type & 0xFF) == cJSON_Invalid;
|
}
|
|
CJSON_PUBLIC(cJSON_bool) cJSON_IsFalse(const cJSON * const item)
|
{
|
if (item == NULL)
|
{
|
return false;
|
}
|
|
return (item->type & 0xFF) == cJSON_False;
|
}
|
|
CJSON_PUBLIC(cJSON_bool) cJSON_IsTrue(const cJSON * const item)
|
{
|
if (item == NULL)
|
{
|
return false;
|
}
|
|
return (item->type & 0xff) == cJSON_True;
|
}
|
|
|
CJSON_PUBLIC(cJSON_bool) cJSON_IsBool(const cJSON * const item)
|
{
|
if (item == NULL)
|
{
|
return false;
|
}
|
|
return (item->type & (cJSON_True | cJSON_False)) != 0;
|
}
|
CJSON_PUBLIC(cJSON_bool) cJSON_IsNull(const cJSON * const item)
|
{
|
if (item == NULL)
|
{
|
return false;
|
}
|
|
return (item->type & 0xFF) == cJSON_NULL;
|
}
|
|
CJSON_PUBLIC(cJSON_bool) cJSON_IsNumber(const cJSON * const item)
|
{
|
if (item == NULL)
|
{
|
return false;
|
}
|
|
return (item->type & 0xFF) == cJSON_Number;
|
}
|
|
CJSON_PUBLIC(cJSON_bool) cJSON_IsString(const cJSON * const item)
|
{
|
if (item == NULL)
|
{
|
return false;
|
}
|
|
return (item->type & 0xFF) == cJSON_String;
|
}
|
|
CJSON_PUBLIC(cJSON_bool) cJSON_IsArray(const cJSON * const item)
|
{
|
if (item == NULL)
|
{
|
return false;
|
}
|
|
return (item->type & 0xFF) == cJSON_Array;
|
}
|
|
CJSON_PUBLIC(cJSON_bool) cJSON_IsObject(const cJSON * const item)
|
{
|
if (item == NULL)
|
{
|
return false;
|
}
|
|
return (item->type & 0xFF) == cJSON_Object;
|
}
|
|
CJSON_PUBLIC(cJSON_bool) cJSON_IsRaw(const cJSON * const item)
|
{
|
if (item == NULL)
|
{
|
return false;
|
}
|
|
return (item->type & 0xFF) == cJSON_Raw;
|
}
|
|
CJSON_PUBLIC(cJSON_bool) cJSON_Compare(const cJSON * const a, const cJSON * const b, const cJSON_bool case_sensitive)
|
{
|
if ((a == NULL) || (b == NULL) || ((a->type & 0xFF) != (b->type & 0xFF)) || cJSON_IsInvalid(a))
|
{
|
return false;
|
}
|
|
/* check if type is valid */
|
switch (a->type & 0xFF)
|
{
|
case cJSON_False:
|
case cJSON_True:
|
case cJSON_NULL:
|
case cJSON_Number:
|
case cJSON_String:
|
case cJSON_Raw:
|
case cJSON_Array:
|
case cJSON_Object:
|
break;
|
|
default:
|
return false;
|
}
|
|
/* identical objects are equal */
|
if (a == b)
|
{
|
return true;
|
}
|
|
switch (a->type & 0xFF)
|
{
|
/* in these cases and equal type is enough */
|
case cJSON_False:
|
case cJSON_True:
|
case cJSON_NULL:
|
return true;
|
|
case cJSON_Number:
|
if (compare_double(a->valuedouble, b->valuedouble))
|
{
|
return true;
|
}
|
return false;
|
|
case cJSON_String:
|
case cJSON_Raw:
|
if ((a->valuestring == NULL) || (b->valuestring == NULL))
|
{
|
return false;
|
}
|
if (strcmp(a->valuestring, b->valuestring) == 0)
|
{
|
return true;
|
}
|
|
return false;
|
|
case cJSON_Array:
|
{
|
cJSON *a_element = a->child;
|
cJSON *b_element = b->child;
|
|
for (; (a_element != NULL) && (b_element != NULL);)
|
{
|
if (!cJSON_Compare(a_element, b_element, case_sensitive))
|
{
|
return false;
|
}
|
|
a_element = a_element->next;
|
b_element = b_element->next;
|
}
|
|
/* one of the arrays is longer than the other */
|
if (a_element != b_element) {
|
return false;
|
}
|
|
return true;
|
}
|
|
case cJSON_Object:
|
{
|
cJSON *a_element = NULL;
|
cJSON *b_element = NULL;
|
cJSON_ArrayForEach(a_element, a)
|
{
|
/* TODO This has O(n^2) runtime, which is horrible! */
|
b_element = get_object_item(b, a_element->string, case_sensitive);
|
if (b_element == NULL)
|
{
|
return false;
|
}
|
|
if (!cJSON_Compare(a_element, b_element, case_sensitive))
|
{
|
return false;
|
}
|
}
|
|
/* doing this twice, once on a and b to prevent true comparison if a subset of b
|
* TODO: Do this the proper way, this is just a fix for now */
|
cJSON_ArrayForEach(b_element, b)
|
{
|
a_element = get_object_item(a, b_element->string, case_sensitive);
|
if (a_element == NULL)
|
{
|
return false;
|
}
|
|
if (!cJSON_Compare(b_element, a_element, case_sensitive))
|
{
|
return false;
|
}
|
}
|
|
return true;
|
}
|
|
default:
|
return false;
|
}
|
}
|
|
CJSON_PUBLIC(void *) cJSON_malloc(size_t size)
|
{
|
return global_hooks.allocate(size);
|
}
|
|
CJSON_PUBLIC(void) cJSON_free(void *object)
|
{
|
global_hooks.deallocate(object);
|
}
|
