Develop and Compile JSON Parse function, see json file.
--- /dev/null
+ 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.
+
--- /dev/null
+#
+# Component Makefile
+#
+# This Makefile should, at the very least, just include $(SDK_PATH)/Makefile. By default,
+# this will take the sources in this directory, compile them and link them into
+# lib(subdirectory_name).a in the build directory. This behaviour is entirely configurable,
+# please read the SDK documents if you need to do this.
+#
+COMPONENT_ADD_INCLUDEDIRS := include port/include
+
+COMPONENT_SRCDIRS := library port
+
+include $(IDF_PATH)/make/component.mk
--- /dev/null
+/*
+ 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.
+*/
+
+Welcome to cJSON.
+
+cJSON aims to be the dumbest possible parser that you can get your job done with.
+It's a single file of C, and a single header file.
+
+JSON is described best here: http://www.json.org/
+It's like XML, but fat-free. You use it to move data around, store things, or just
+generally represent your program's state.
+
+
+First up, how do I build?
+Add cJSON.c to your project, and put cJSON.h somewhere in the header search path.
+For example, to build the test app:
+
+gcc cJSON.c test.c -o test -lm
+./test
+
+
+As a library, cJSON exists to take away as much legwork as it can, but not get in your way.
+As a point of pragmatism (i.e. ignoring the truth), I'm going to say that you can use it
+in one of two modes: Auto and Manual. Let's have a quick run-through.
+
+
+I lifted some JSON from this page: http://www.json.org/fatfree.html
+That page inspired me to write cJSON, which is a parser that tries to share the same
+philosophy as JSON itself. Simple, dumb, out of the way.
+
+Some JSON:
+{
+ "name": "Jack (\"Bee\") Nimble",
+ "format": {
+ "type": "rect",
+ "width": 1920,
+ "height": 1080,
+ "interlace": false,
+ "frame rate": 24
+ }
+}
+
+Assume that you got this from a file, a webserver, or magic JSON elves, whatever,
+you have a char * to it. Everything is a cJSON struct.
+Get it parsed:
+ cJSON *root = cJSON_Parse(my_json_string);
+
+This is an object. We're in C. We don't have objects. But we do have structs.
+What's the framerate?
+
+ cJSON *format = cJSON_GetObjectItem(root,"format");
+ int framerate = cJSON_GetObjectItem(format,"frame rate")->valueint;
+
+
+Want to change the framerate?
+ cJSON_GetObjectItem(format,"frame rate")->valueint=25;
+
+Back to disk?
+ char *rendered=cJSON_Print(root);
+
+Finished? Delete the root (this takes care of everything else).
+ cJSON_Delete(root);
+
+That's AUTO mode. If you're going to use Auto mode, you really ought to check pointers
+before you dereference them. If you want to see how you'd build this struct in code?
+ cJSON *root,*fmt;
+ root=cJSON_CreateObject();
+ cJSON_AddItemToObject(root, "name", cJSON_CreateString("Jack (\"Bee\") Nimble"));
+ cJSON_AddItemToObject(root, "format", fmt=cJSON_CreateObject());
+ cJSON_AddStringToObject(fmt,"type", "rect");
+ cJSON_AddNumberToObject(fmt,"width", 1920);
+ cJSON_AddNumberToObject(fmt,"height", 1080);
+ cJSON_AddFalseToObject (fmt,"interlace");
+ cJSON_AddNumberToObject(fmt,"frame rate", 24);
+
+Hopefully we can agree that's not a lot of code? There's no overhead, no unnecessary setup.
+Look at test.c for a bunch of nice examples, mostly all ripped off the json.org site, and
+a few from elsewhere.
+
+What about manual mode? First up you need some detail.
+Let's cover how the cJSON objects represent the JSON data.
+cJSON doesn't distinguish arrays from objects in handling; just type.
+Each cJSON has, potentially, a child, siblings, value, a name.
+
+The root object has: Object Type and a Child
+The Child has name "name", with value "Jack ("Bee") Nimble", and a sibling:
+Sibling has type Object, name "format", and a child.
+That child has type String, name "type", value "rect", and a sibling:
+Sibling has type Number, name "width", value 1920, and a sibling:
+Sibling has type Number, name "height", value 1080, and a sibling:
+Sibling has type False, name "interlace", and a sibling:
+Sibling has type Number, name "frame rate", value 24
+
+Here's the structure:
+typedef struct cJSON {
+ struct cJSON *next,*prev;
+ struct cJSON *child;
+
+ int type;
+
+ char *valuestring;
+ int valueint;
+ double valuedouble;
+
+ char *string;
+} cJSON;
+
+By default all values are 0 unless set by virtue of being meaningful.
+
+next/prev is a doubly linked list of siblings. next takes you to your sibling,
+prev takes you back from your sibling to you.
+Only objects and arrays have a "child", and it's the head of the doubly linked list.
+A "child" entry will have prev==0, but next potentially points on. The last sibling has next=0.
+The type expresses Null/True/False/Number/String/Array/Object, all of which are #defined in
+cJSON.h
+
+A Number has valueint and valuedouble. If you're expecting an int, read valueint, if not read
+valuedouble.
+
+Any entry which is in the linked list which is the child of an object will have a "string"
+which is the "name" of the entry. When I said "name" in the above example, that's "string".
+"string" is the JSON name for the 'variable name' if you will.
+
+Now you can trivially walk the lists, recursively, and parse as you please.
+You can invoke cJSON_Parse to get cJSON to parse for you, and then you can take
+the root object, and traverse the structure (which is, formally, an N-tree),
+and tokenise as you please. If you wanted to build a callback style parser, this is how
+you'd do it (just an example, since these things are very specific):
+
+void parse_and_callback(cJSON *item,const char *prefix)
+{
+ while (item)
+ {
+ char *newprefix=malloc(strlen(prefix)+strlen(item->name)+2);
+ sprintf(newprefix,"%s/%s",prefix,item->name);
+ int dorecurse=callback(newprefix, item->type, item);
+ if (item->child && dorecurse) parse_and_callback(item->child,newprefix);
+ item=item->next;
+ free(newprefix);
+ }
+}
+
+The prefix process will build you a separated list, to simplify your callback handling.
+The 'dorecurse' flag would let the callback decide to handle sub-arrays on it's own, or
+let you invoke it per-item. For the item above, your callback might look like this:
+
+int callback(const char *name,int type,cJSON *item)
+{
+ if (!strcmp(name,"name")) { /* populate name */ }
+ else if (!strcmp(name,"format/type") { /* handle "rect" */ }
+ else if (!strcmp(name,"format/width") { /* 800 */ }
+ else if (!strcmp(name,"format/height") { /* 600 */ }
+ else if (!strcmp(name,"format/interlace") { /* false */ }
+ else if (!strcmp(name,"format/frame rate") { /* 24 */ }
+ return 1;
+}
+
+Alternatively, you might like to parse iteratively.
+You'd use:
+
+void parse_object(cJSON *item)
+{
+ int i; for (i=0;i<cJSON_GetArraySize(item);i++)
+ {
+ cJSON *subitem=cJSON_GetArrayItem(item,i);
+ // handle subitem.
+ }
+}
+
+Or, for PROPER manual mode:
+
+void parse_object(cJSON *item)
+{
+ cJSON *subitem=item->child;
+ while (subitem)
+ {
+ // handle subitem
+ if (subitem->child) parse_object(subitem->child);
+
+ subitem=subitem->next;
+ }
+}
+
+Of course, this should look familiar, since this is just a stripped-down version
+of the callback-parser.
+
+This should cover most uses you'll find for parsing. The rest should be possible
+to infer.. and if in doubt, read the source! There's not a lot of it! ;)
+
+
+In terms of constructing JSON data, the example code above is the right way to do it.
+You can, of course, hand your sub-objects to other functions to populate.
+Also, if you find a use for it, you can manually build the objects.
+For instance, suppose you wanted to build an array of objects?
+
+cJSON *objects[24];
+
+cJSON *Create_array_of_anything(cJSON **items,int num)
+{
+ int i;cJSON *prev, *root=cJSON_CreateArray();
+ for (i=0;i<24;i++)
+ {
+ if (!i) root->child=objects[i];
+ else prev->next=objects[i], objects[i]->prev=prev;
+ prev=objects[i];
+ }
+ return root;
+}
+
+and simply: Create_array_of_anything(objects,24);
+
+cJSON doesn't make any assumptions about what order you create things in.
+You can attach the objects, as above, and later add children to each
+of those objects.
+
+As soon as you call cJSON_Print, it renders the structure to text.
+
+
+
+The test.c code shows how to handle a bunch of typical cases. If you uncomment
+the code, it'll load, parse and print a bunch of test files, also from json.org,
+which are more complex than I'd care to try and stash into a const char array[].
+
+
+Enjoy cJSON!
+
+
+- Dave Gamble, Aug 2009
--- /dev/null
+/*
+ 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.
+*/
+
+#ifndef cJSON__h
+#define cJSON__h
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+/* cJSON Types: */
+#define cJSON_False 0
+#define cJSON_True 1
+#define cJSON_NULL 2
+#define cJSON_Number 3
+#define cJSON_String 4
+#define cJSON_Array 5
+#define cJSON_Object 6
+
+#define cJSON_IsReference 256
+#define cJSON_StringIsConst 512
+
+/* The cJSON structure: */
+typedef struct cJSON {
+ struct cJSON *next,*prev; /* next/prev allow you to walk array/object chains. Alternatively, use GetArraySize/GetArrayItem/GetObjectItem */
+ struct cJSON *child; /* An array or object item will have a child pointer pointing to a chain of the items in the array/object. */
+
+ int type; /* The type of the item, as above. */
+
+ char *valuestring; /* The item's string, if type==cJSON_String */
+ int valueint; /* The item's number, if type==cJSON_Number */
+ double valuedouble; /* The item's number, if type==cJSON_Number */
+
+ char *string; /* The item's name string, if this item is the child of, or is in the list of subitems of an object. */
+} cJSON;
+
+typedef struct cJSON_Hooks {
+ void *(*malloc_fn)(size_t sz);
+ void (*free_fn)(void *ptr);
+} cJSON_Hooks;
+
+/* Supply malloc, realloc and free functions to cJSON */
+extern void cJSON_InitHooks(cJSON_Hooks* hooks);
+
+
+/* Supply a block of JSON, and this returns a cJSON object you can interrogate. Call cJSON_Delete when finished. */
+extern cJSON *cJSON_Parse(const char *value);
+/* Render a cJSON entity to text for transfer/storage. Free the char* when finished. */
+extern char *cJSON_Print(cJSON *item);
+/* Render a cJSON entity to text for transfer/storage without any formatting. Free the char* when finished. */
+extern char *cJSON_PrintUnformatted(cJSON *item);
+/* Render a cJSON entity to text using a buffered strategy. prebuffer is a guess at the final size. guessing well reduces reallocation. fmt=0 gives unformatted, =1 gives formatted */
+extern char *cJSON_PrintBuffered(cJSON *item,int prebuffer,int fmt);
+/* Delete a cJSON entity and all subentities. */
+extern void cJSON_Delete(cJSON *c);
+
+/* Returns the number of items in an array (or object). */
+extern int cJSON_GetArraySize(cJSON *array);
+/* Retrieve item number "item" from array "array". Returns NULL if unsuccessful. */
+extern cJSON *cJSON_GetArrayItem(cJSON *array,int item);
+/* Get item "string" from object. Case insensitive. */
+extern cJSON *cJSON_GetObjectItem(cJSON *object,const char *string);
+
+/* For analysing failed parses. This returns a pointer to the parse error. You'll probably need to look a few chars back to make sense of it. Defined when cJSON_Parse() returns 0. 0 when cJSON_Parse() succeeds. */
+extern const char *cJSON_GetErrorPtr(void);
+
+/* These calls create a cJSON item of the appropriate type. */
+extern cJSON *cJSON_CreateNull(void);
+extern cJSON *cJSON_CreateTrue(void);
+extern cJSON *cJSON_CreateFalse(void);
+extern cJSON *cJSON_CreateBool(int b);
+extern cJSON *cJSON_CreateNumber(double num);
+extern cJSON *cJSON_CreateString(const char *string);
+extern cJSON *cJSON_CreateArray(void);
+extern cJSON *cJSON_CreateObject(void);
+
+/* These utilities create an Array of count items. */
+extern cJSON *cJSON_CreateIntArray(const int *numbers,int count);
+extern cJSON *cJSON_CreateFloatArray(const float *numbers,int count);
+extern cJSON *cJSON_CreateDoubleArray(const double *numbers,int count);
+extern cJSON *cJSON_CreateStringArray(const char **strings,int count);
+
+/* Append item to the specified array/object. */
+extern void cJSON_AddItemToArray(cJSON *array, cJSON *item);
+extern void cJSON_AddItemToObject(cJSON *object,const char *string,cJSON *item);
+extern void cJSON_AddItemToObjectCS(cJSON *object,const char *string,cJSON *item); /* Use this when string is definitely const (i.e. a literal, or as good as), and will definitely survive the cJSON object */
+/* Append reference to item to the specified array/object. Use this when you want to add an existing cJSON to a new cJSON, but don't want to corrupt your existing cJSON. */
+extern void cJSON_AddItemReferenceToArray(cJSON *array, cJSON *item);
+extern void cJSON_AddItemReferenceToObject(cJSON *object,const char *string,cJSON *item);
+
+/* Remove/Detatch items from Arrays/Objects. */
+extern cJSON *cJSON_DetachItemFromArray(cJSON *array,int which);
+extern void cJSON_DeleteItemFromArray(cJSON *array,int which);
+extern cJSON *cJSON_DetachItemFromObject(cJSON *object,const char *string);
+extern void cJSON_DeleteItemFromObject(cJSON *object,const char *string);
+
+/* Update array items. */
+extern void cJSON_InsertItemInArray(cJSON *array,int which,cJSON *newitem); /* Shifts pre-existing items to the right. */
+extern void cJSON_ReplaceItemInArray(cJSON *array,int which,cJSON *newitem);
+extern void cJSON_ReplaceItemInObject(cJSON *object,const char *string,cJSON *newitem);
+
+/* Duplicate a cJSON item */
+extern cJSON *cJSON_Duplicate(cJSON *item,int recurse);
+/* Duplicate will create a new, identical cJSON item to the one you pass, in new memory that will
+need to be released. With recurse!=0, it will duplicate any children connected to the item.
+The item->next and ->prev pointers are always zero on return from Duplicate. */
+
+/* ParseWithOpts allows you to require (and check) that the JSON is null terminated, and to retrieve the pointer to the final byte parsed. */
+extern cJSON *cJSON_ParseWithOpts(const char *value,const char **return_parse_end,int require_null_terminated);
+
+extern void cJSON_Minify(char *json);
+
+/* Macros for creating things quickly. */
+#define cJSON_AddNullToObject(object,name) cJSON_AddItemToObject(object, name, cJSON_CreateNull())
+#define cJSON_AddTrueToObject(object,name) cJSON_AddItemToObject(object, name, cJSON_CreateTrue())
+#define cJSON_AddFalseToObject(object,name) cJSON_AddItemToObject(object, name, cJSON_CreateFalse())
+#define cJSON_AddBoolToObject(object,name,b) cJSON_AddItemToObject(object, name, cJSON_CreateBool(b))
+#define cJSON_AddNumberToObject(object,name,n) cJSON_AddItemToObject(object, name, cJSON_CreateNumber(n))
+#define cJSON_AddStringToObject(object,name,s) cJSON_AddItemToObject(object, name, cJSON_CreateString(s))
+
+/* When assigning an integer value, it needs to be propagated to valuedouble too. */
+#define cJSON_SetIntValue(object,val) ((object)?(object)->valueint=(object)->valuedouble=(val):(val))
+#define cJSON_SetNumberValue(object,val) ((object)?(object)->valueint=(object)->valuedouble=(val):(val))
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
--- /dev/null
+/*
+ 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.
+*/
+
+/* cJSON */
+/* JSON parser in C. */
+
+#include <string.h>
+#include <stdio.h>
+#include <math.h>
+#include <stdlib.h>
+#include <float.h>
+#include <limits.h>
+#include <ctype.h>
+#include "cJSON.h"
+
+static const char *ep;
+
+const char *cJSON_GetErrorPtr(void) {return ep;}
+
+static int cJSON_strcasecmp(const char *s1,const char *s2)
+{
+ if (!s1) return (s1==s2)?0:1;if (!s2) return 1;
+ for(; tolower(*(const unsigned char *)s1) == tolower(*(const unsigned char *)s2); ++s1, ++s2) if(*s1 == 0) return 0;
+ return tolower(*(const unsigned char *)s1) - tolower(*(const unsigned char *)s2);
+}
+
+static void *(*cJSON_malloc)(size_t sz) = malloc;
+static void (*cJSON_free)(void *ptr) = free;
+
+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;
+}
+
+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;
+}
+
+/* Internal constructor. */
+static cJSON *cJSON_New_Item(void)
+{
+ cJSON* node = (cJSON*)cJSON_malloc(sizeof(cJSON));
+ if (node) memset(node,0,sizeof(cJSON));
+ return node;
+}
+
+/* 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->type&cJSON_StringIsConst) && c->string) cJSON_free(c->string);
+ cJSON_free(c);
+ c=next;
+ }
+}
+
+/* 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;
+
+ if (*num=='-') sign=-1,num++; /* Has sign? */
+ if (*num=='0') num++; /* is zero */
+ if (*num>='1' && *num<='9') do n=(n*10.0)+(*num++ -'0'); while (*num>='0' && *num<='9'); /* Number? */
+ if (*num=='.' && num[1]>='0' && num[1]<='9') {num++; do n=(n*10.0)+(*num++ -'0'),scale--; while (*num>='0' && *num<='9');} /* Fractional part? */
+ if (*num=='e' || *num=='E') /* Exponent? */
+ { num++;if (*num=='+') num++; else if (*num=='-') signsubscale=-1,num++; /* With sign? */
+ while (*num>='0' && *num<='9') subscale=(subscale*10)+(*num++ - '0'); /* Number? */
+ }
+
+ n=sign*n*pow(10.0,(scale+subscale*signsubscale)); /* number = +/- number.fraction * 10^+/- exponent */
+
+ item->valuedouble=n;
+ item->valueint=(int)n;
+ item->type=cJSON_Number;
+ return num;
+}
+
+static int pow2gt (int x) { --x; x|=x>>1; x|=x>>2; x|=x>>4; x|=x>>8; x|=x>>16; return x+1; }
+
+typedef struct {char *buffer; int length; int offset; } printbuffer;
+
+static char* ensure(printbuffer *p,int needed)
+{
+ char *newbuffer;int newsize;
+ if (!p || !p->buffer) return 0;
+ needed+=p->offset;
+ if (needed<=p->length) return p->buffer+p->offset;
+
+ newsize=pow2gt(needed);
+ newbuffer=(char*)cJSON_malloc(newsize);
+ if (!newbuffer) {cJSON_free(p->buffer);p->length=0,p->buffer=0;return 0;}
+ if (newbuffer) memcpy(newbuffer,p->buffer,p->length);
+ cJSON_free(p->buffer);
+ p->length=newsize;
+ p->buffer=newbuffer;
+ return newbuffer+p->offset;
+}
+
+static int update(printbuffer *p)
+{
+ char *str;
+ if (!p || !p->buffer) return 0;
+ str=p->buffer+p->offset;
+ return p->offset+strlen(str);
+}
+
+/* Render the number nicely from the given item into a string. */
+static char *print_number(cJSON *item,printbuffer *p)
+{
+ char *str=0;
+ double d=item->valuedouble;
+ if (d==0)
+ {
+ if (p) str=ensure(p,2);
+ else str=(char*)cJSON_malloc(2); /* special case for 0. */
+ if (str) strcpy(str,"0");
+ }
+ else if (fabs(((double)item->valueint)-d)<=DBL_EPSILON && d<=INT_MAX && d>=INT_MIN)
+ {
+ if (p) str=ensure(p,21);
+ else str=(char*)cJSON_malloc(21); /* 2^64+1 can be represented in 21 chars. */
+ if (str) sprintf(str,"%d",item->valueint);
+ }
+ else
+ {
+ if (p) str=ensure(p,64);
+ else str=(char*)cJSON_malloc(64); /* This is a nice tradeoff. */
+ if (str)
+ {
+ if (fabs(floor(d)-d)<=DBL_EPSILON && fabs(d)<1.0e60)sprintf(str,"%.0f",d);
+ else if (fabs(d)<1.0e-6 || fabs(d)>1.0e9) sprintf(str,"%e",d);
+ else sprintf(str,"%f",d);
+ }
+ }
+ return str;
+}
+
+static unsigned parse_hex4(const char *str)
+{
+ unsigned h=0;
+ if (*str>='0' && *str<='9') h+=(*str)-'0'; else if (*str>='A' && *str<='F') h+=10+(*str)-'A'; else if (*str>='a' && *str<='f') h+=10+(*str)-'a'; else return 0;
+ h=h<<4;str++;
+ if (*str>='0' && *str<='9') h+=(*str)-'0'; else if (*str>='A' && *str<='F') h+=10+(*str)-'A'; else if (*str>='a' && *str<='f') h+=10+(*str)-'a'; else return 0;
+ h=h<<4;str++;
+ if (*str>='0' && *str<='9') h+=(*str)-'0'; else if (*str>='A' && *str<='F') h+=10+(*str)-'A'; else if (*str>='a' && *str<='f') h+=10+(*str)-'a'; else return 0;
+ h=h<<4;str++;
+ if (*str>='0' && *str<='9') h+=(*str)-'0'; else if (*str>='A' && *str<='F') h+=10+(*str)-'A'; else if (*str>='a' && *str<='f') h+=10+(*str)-'a'; else return 0;
+ return h;
+}
+
+/* Parse the input text into an unescaped cstring, and populate item. */
+static const unsigned char firstByteMark[7] = { 0x00, 0x00, 0xC0, 0xE0, 0xF0, 0xF8, 0xFC };
+static const char *parse_string(cJSON *item,const char *str)
+{
+ const char *ptr=str+1;char *ptr2;char *out;int len=0;unsigned uc,uc2;
+ if (*str!='\"') {ep=str;return 0;} /* not a string! */
+
+ while (*ptr!='\"' && *ptr && ++len) if (*ptr++ == '\\') ptr++; /* Skip escaped quotes. */
+
+ out=(char*)cJSON_malloc(len+1); /* This is how long we need for the string, roughly. */
+ 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. */
+ uc=parse_hex4(ptr+1);ptr+=4; /* get the unicode char. */
+
+ if ((uc>=0xDC00 && uc<=0xDFFF) || uc==0) break; /* check for invalid. */
+
+ if (uc>=0xD800 && uc<=0xDBFF) /* UTF16 surrogate pairs. */
+ {
+ if (ptr[1]!='\\' || ptr[2]!='u') break; /* missing second-half of surrogate. */
+ uc2=parse_hex4(ptr+3);ptr+=6;
+ if (uc2<0xDC00 || uc2>0xDFFF) break; /* invalid second-half of surrogate. */
+ 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]);
+ }
+ 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,printbuffer *p)
+{
+ const char *ptr;char *ptr2,*out;int len=0,flag=0;unsigned char token;
+
+ for (ptr=str;*ptr;ptr++) flag|=((*ptr>0 && *ptr<32)||(*ptr=='\"')||(*ptr=='\\'))?1:0;
+ if (!flag)
+ {
+ len=ptr-str;
+ if (p) out=ensure(p,len+3);
+ else out=(char*)cJSON_malloc(len+3);
+ if (!out) return 0;
+ ptr2=out;*ptr2++='\"';
+ strcpy(ptr2,str);
+ ptr2[len]='\"';
+ ptr2[len+1]=0;
+ return out;
+ }
+
+ if (!str)
+ {
+ if (p) out=ensure(p,3);
+ else out=(char*)cJSON_malloc(3);
+ if (!out) return 0;
+ strcpy(out,"\"\"");
+ return out;
+ }
+ ptr=str;while ((token=*ptr) && ++len) {if (strchr("\"\\\b\f\n\r\t",token)) len++; else if (token<32) len+=5;ptr++;}
+
+ if (p) out=ensure(p,len+3);
+ else 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: sprintf(ptr2,"u%04x",token);ptr2+=5; break; /* escape and print */
+ }
+ }
+ }
+ *ptr2++='\"';*ptr2++=0;
+ return out;
+}
+/* Invote print_string_ptr (which is useful) on an item. */
+static char *print_string(cJSON *item,printbuffer *p) {return print_string_ptr(item->valuestring,p);}
+
+/* Predeclare these prototypes. */
+static const char *parse_value(cJSON *item,const char *value);
+static char *print_value(cJSON *item,int depth,int fmt,printbuffer *p);
+static const char *parse_array(cJSON *item,const char *value);
+static char *print_array(cJSON *item,int depth,int fmt,printbuffer *p);
+static const char *parse_object(cJSON *item,const char *value);
+static char *print_object(cJSON *item,int depth,int fmt,printbuffer *p);
+
+/* Utility to jump whitespace and cr/lf */
+static const char *skip(const char *in) {while (in && *in && (unsigned char)*in<=32) in++; return in;}
+
+/* Parse an object - create a new root, and populate. */
+cJSON *cJSON_ParseWithOpts(const char *value,const char **return_parse_end,int require_null_terminated)
+{
+ const char *end=0;
+ cJSON *c=cJSON_New_Item();
+ ep=0;
+ if (!c) return 0; /* memory fail */
+
+ end=parse_value(c,skip(value));
+ if (!end) {cJSON_Delete(c);return 0;} /* parse failure. ep is set. */
+
+ /* if we require null-terminated JSON without appended garbage, skip and then check for a null terminator */
+ if (require_null_terminated) {end=skip(end);if (*end) {cJSON_Delete(c);ep=end;return 0;}}
+ if (return_parse_end) *return_parse_end=end;
+ return c;
+}
+/* Default options for cJSON_Parse */
+cJSON *cJSON_Parse(const char *value) {return cJSON_ParseWithOpts(value,0,0);}
+
+/* Render a cJSON item/entity/structure to text. */
+char *cJSON_Print(cJSON *item) {return print_value(item,0,1,0);}
+char *cJSON_PrintUnformatted(cJSON *item) {return print_value(item,0,0,0);}
+
+char *cJSON_PrintBuffered(cJSON *item,int prebuffer,int fmt)
+{
+ printbuffer p;
+ p.buffer=(char*)cJSON_malloc(prebuffer);
+ p.length=prebuffer;
+ p.offset=0;
+ return print_value(item,0,fmt,&p);
+ return p.buffer;
+}
+
+
+/* Parser core - when encountering text, process appropriately. */
+static const char *parse_value(cJSON *item,const char *value)
+{
+ if (!value) return 0; /* Fail on null. */
+ 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); }
+
+ ep=value;return 0; /* failure. */
+}
+
+/* Render a value to text. */
+static char *print_value(cJSON *item,int depth,int fmt,printbuffer *p)
+{
+ char *out=0;
+ if (!item) return 0;
+ if (p)
+ {
+ switch ((item->type)&255)
+ {
+ case cJSON_NULL: {out=ensure(p,5); if (out) strcpy(out,"null"); break;}
+ case cJSON_False: {out=ensure(p,6); if (out) strcpy(out,"false"); break;}
+ case cJSON_True: {out=ensure(p,5); if (out) strcpy(out,"true"); break;}
+ case cJSON_Number: out=print_number(item,p);break;
+ case cJSON_String: out=print_string(item,p);break;
+ case cJSON_Array: out=print_array(item,depth,fmt,p);break;
+ case cJSON_Object: out=print_object(item,depth,fmt,p);break;
+ }
+ }
+ else
+ {
+ 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,0);break;
+ case cJSON_String: out=print_string(item,0);break;
+ case cJSON_Array: out=print_array(item,depth,fmt,0);break;
+ case cJSON_Object: out=print_object(item,depth,fmt,0);break;
+ }
+ }
+ return out;
+}
+
+/* Build an array from input text. */
+static const char *parse_array(cJSON *item,const char *value)
+{
+ cJSON *child;
+ if (*value!='[') {ep=value;return 0;} /* not an array! */
+
+ item->type=cJSON_Array;
+ value=skip(value+1);
+ if (*value==']') return value+1; /* empty array. */
+
+ item->child=child=cJSON_New_Item();
+ if (!item->child) return 0; /* memory fail */
+ value=skip(parse_value(child,skip(value))); /* skip any spacing, get the value. */
+ if (!value) return 0;
+
+ while (*value==',')
+ {
+ cJSON *new_item;
+ if (!(new_item=cJSON_New_Item())) return 0; /* memory fail */
+ child->next=new_item;new_item->prev=child;child=new_item;
+ value=skip(parse_value(child,skip(value+1)));
+ if (!value) return 0; /* memory fail */
+ }
+
+ if (*value==']') return value+1; /* end of array */
+ ep=value;return 0; /* malformed. */
+}
+
+/* Render an array to text */
+static char *print_array(cJSON *item,int depth,int fmt,printbuffer *p)
+{
+ char **entries;
+ char *out=0,*ptr,*ret;int len=5;
+ cJSON *child=item->child;
+ int numentries=0,i=0,fail=0;
+ size_t tmplen=0;
+
+ /* How many entries in the array? */
+ while (child) numentries++,child=child->next;
+ /* Explicitly handle numentries==0 */
+ if (!numentries)
+ {
+ if (p) out=ensure(p,3);
+ else out=(char*)cJSON_malloc(3);
+ if (out) strcpy(out,"[]");
+ return out;
+ }
+
+ if (p)
+ {
+ /* Compose the output array. */
+ i=p->offset;
+ ptr=ensure(p,1);if (!ptr) return 0; *ptr='['; p->offset++;
+ child=item->child;
+ while (child && !fail)
+ {
+ print_value(child,depth+1,fmt,p);
+ p->offset=update(p);
+ if (child->next) {len=fmt?2:1;ptr=ensure(p,len+1);if (!ptr) return 0;*ptr++=',';if(fmt)*ptr++=' ';*ptr=0;p->offset+=len;}
+ child=child->next;
+ }
+ ptr=ensure(p,2);if (!ptr) return 0; *ptr++=']';*ptr=0;
+ out=(p->buffer)+i;
+ }
+ else
+ {
+ /* 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,0);
+ 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++)
+ {
+ tmplen=strlen(entries[i]);memcpy(ptr,entries[i],tmplen);ptr+=tmplen;
+ 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!='{') {ep=value;return 0;} /* not an object! */
+
+ item->type=cJSON_Object;
+ value=skip(value+1);
+ if (*value=='}') return value+1; /* empty array. */
+
+ 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;} /* fail! */
+ value=skip(parse_value(child,skip(value+1))); /* skip any spacing, get the value. */
+ if (!value) return 0;
+
+ while (*value==',')
+ {
+ cJSON *new_item;
+ if (!(new_item=cJSON_New_Item())) return 0; /* memory fail */
+ 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;} /* fail! */
+ value=skip(parse_value(child,skip(value+1))); /* skip any spacing, get the value. */
+ if (!value) return 0;
+ }
+
+ if (*value=='}') return value+1; /* end of array */
+ ep=value;return 0; /* malformed. */
+}
+
+/* Render an object to text. */
+static char *print_object(cJSON *item,int depth,int fmt,printbuffer *p)
+{
+ char **entries=0,**names=0;
+ char *out=0,*ptr,*ret,*str;int len=7,i=0,j;
+ cJSON *child=item->child;
+ int numentries=0,fail=0;
+ size_t tmplen=0;
+ /* Count the number of entries. */
+ while (child) numentries++,child=child->next;
+ /* Explicitly handle empty object case */
+ if (!numentries)
+ {
+ if (p) out=ensure(p,fmt?depth+4:3);
+ else out=(char*)cJSON_malloc(fmt?depth+4:3);
+ if (!out) return 0;
+ ptr=out;*ptr++='{';
+ if (fmt) {*ptr++='\n';for (i=0;i<depth-1;i++) *ptr++='\t';}
+ *ptr++='}';*ptr++=0;
+ return out;
+ }
+ if (p)
+ {
+ /* Compose the output: */
+ i=p->offset;
+ len=fmt?2:1; ptr=ensure(p,len+1); if (!ptr) return 0;
+ *ptr++='{'; if (fmt) *ptr++='\n'; *ptr=0; p->offset+=len;
+ child=item->child;depth++;
+ while (child)
+ {
+ if (fmt)
+ {
+ ptr=ensure(p,depth); if (!ptr) return 0;
+ for (j=0;j<depth;j++) *ptr++='\t';
+ p->offset+=depth;
+ }
+ print_string_ptr(child->string,p);
+ p->offset=update(p);
+
+ len=fmt?2:1;
+ ptr=ensure(p,len); if (!ptr) return 0;
+ *ptr++=':';if (fmt) *ptr++='\t';
+ p->offset+=len;
+
+ print_value(child,depth,fmt,p);
+ p->offset=update(p);
+
+ len=(fmt?1:0)+(child->next?1:0);
+ ptr=ensure(p,len+1); if (!ptr) return 0;
+ if (child->next) *ptr++=',';
+ if (fmt) *ptr++='\n';*ptr=0;
+ p->offset+=len;
+ child=child->next;
+ }
+ ptr=ensure(p,fmt?(depth+1):2); if (!ptr) return 0;
+ if (fmt) for (i=0;i<depth-1;i++) *ptr++='\t';
+ *ptr++='}';*ptr=0;
+ out=(p->buffer)+i;
+ }
+ else
+ {
+ /* 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,0);
+ entries[i++]=ret=print_value(child,depth,fmt,0);
+ 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';
+ tmplen=strlen(names[i]);memcpy(ptr,names[i],tmplen);ptr+=tmplen;
+ *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;
+}
+
+/* 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;}
+
+/* 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;}
+
+/* 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_AddItemToObjectCS(cJSON *object,const char *string,cJSON *item) {if (!item) return; if (!(item->type&cJSON_StringIsConst) && item->string) cJSON_free(item->string);item->string=(char*)string;item->type|=cJSON_StringIsConst;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_InsertItemInArray(cJSON *array,int which,cJSON *newitem) {cJSON *c=array->child;while (c && which>0) c=c->next,which--;if (!c) {cJSON_AddItemToArray(array,newitem);return;}
+ newitem->next=c;newitem->prev=c->prev;c->prev=newitem;if (c==array->child) array->child=newitem; else newitem->prev->next=newitem;}
+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) {int i;cJSON *n=0,*p=0,*a=cJSON_CreateArray();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) {int i;cJSON *n=0,*p=0,*a=cJSON_CreateArray();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) {int i;cJSON *n=0,*p=0,*a=cJSON_CreateArray();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) {int i;cJSON *n=0,*p=0,*a=cJSON_CreateArray();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;}
+
+/* Duplication */
+cJSON *cJSON_Duplicate(cJSON *item,int recurse)
+{
+ cJSON *newitem,*cptr,*nptr=0,*newchild;
+ /* Bail on bad ptr */
+ if (!item) return 0;
+ /* Create new item */
+ newitem=cJSON_New_Item();
+ if (!newitem) return 0;
+ /* Copy over all vars */
+ newitem->type=item->type&(~cJSON_IsReference),newitem->valueint=item->valueint,newitem->valuedouble=item->valuedouble;
+ if (item->valuestring) {newitem->valuestring=cJSON_strdup(item->valuestring); if (!newitem->valuestring) {cJSON_Delete(newitem);return 0;}}
+ if (item->string) {newitem->string=cJSON_strdup(item->string); if (!newitem->string) {cJSON_Delete(newitem);return 0;}}
+ /* If non-recursive, then we're done! */
+ if (!recurse) return newitem;
+ /* Walk the ->next chain for the child. */
+ cptr=item->child;
+ while (cptr)
+ {
+ newchild=cJSON_Duplicate(cptr,1); /* Duplicate (with recurse) each item in the ->next chain */
+ if (!newchild) {cJSON_Delete(newitem);return 0;}
+ if (nptr) {nptr->next=newchild,newchild->prev=nptr;nptr=newchild;} /* If newitem->child already set, then crosswire ->prev and ->next and move on */
+ else {newitem->child=newchild;nptr=newchild;} /* Set newitem->child and move to it */
+ cptr=cptr->next;
+ }
+ return newitem;
+}
+
+void cJSON_Minify(char *json)
+{
+ char *into=json;
+ while (*json)
+ {
+ if (*json==' ') json++;
+ else if (*json=='\t') json++; /* Whitespace characters. */
+ else if (*json=='\r') json++;
+ else if (*json=='\n') json++;
+ else if (*json=='/' && json[1]=='/') while (*json && *json!='\n') json++; /* double-slash comments, to end of line. */
+ else if (*json=='/' && json[1]=='*') {while (*json && !(*json=='*' && json[1]=='/')) json++;json+=2;} /* multiline comments. */
+ else if (*json=='\"'){*into++=*json++;while (*json && *json!='\"'){if (*json=='\\') *into++=*json++;*into++=*json++;}*into++=*json++;} /* string literals, which are \" sensitive. */
+ else *into++=*json++; /* All other characters. */
+ }
+ *into=0; /* and null-terminate. */
+}
--- /dev/null
+#include <ctype.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include "cJSON_Utils.h"
+
+static int cJSONUtils_strcasecmp(const char *s1,const char *s2)
+{
+ if (!s1) return (s1==s2)?0:1;if (!s2) return 1;
+ for(; tolower(*(const unsigned char *)s1) == tolower(*(const unsigned char *)s2); ++s1, ++s2) if(*s1 == 0) return 0;
+ return tolower(*(const unsigned char *)s1) - tolower(*(const unsigned char *)s2);
+}
+
+/* JSON Pointer implementation: */
+static int cJSONUtils_Pstrcasecmp(const char *a,const char *e)
+{
+ if (!a || !e) return (a==e)?0:1;
+ for (;*a && *e && *e!='/';a++,e++) {
+ if (*e=='~') {if (!(e[1]=='0' && *a=='~') && !(e[1]=='1' && *a=='/')) return 1; else e++;}
+ else if (tolower(*(const unsigned char *)a)!=tolower(*(const unsigned char *)e)) return 1;
+ }
+ if ((*e!=0 && *e!='/') != (*a!=0)) return 1;
+ return 0;
+}
+
+static int cJSONUtils_PointerEncodedstrlen(const char *s) {int l=0;for (;*s;s++,l++) if (*s=='~' || *s=='/') l++;return l;}
+
+static void cJSONUtils_PointerEncodedstrcpy(char *d,const char *s)
+{
+ for (;*s;s++)
+ {
+ if (*s=='/') {*d++='~';*d++='1';}
+ else if (*s=='~') {*d++='~';*d++='0';}
+ else *d++=*s;
+ }
+ *d=0;
+}
+
+char *cJSONUtils_FindPointerFromObjectTo(cJSON *object,cJSON *target)
+{
+ int type=object->type,c=0;cJSON *obj=0;
+
+ if (object==target) return strdup("");
+
+ for (obj=object->child;obj;obj=obj->next,c++)
+ {
+ char *found=cJSONUtils_FindPointerFromObjectTo(obj,target);
+ if (found)
+ {
+ if (type==cJSON_Array)
+ {
+ char *ret=(char*)malloc(strlen(found)+23);
+ sprintf(ret,"/%d%s",c,found);
+ free(found);
+ return ret;
+ }
+ else if (type==cJSON_Object)
+ {
+ char *ret=(char*)malloc(strlen(found)+cJSONUtils_PointerEncodedstrlen(obj->string)+2);
+ *ret='/';cJSONUtils_PointerEncodedstrcpy(ret+1,obj->string);
+ strcat(ret,found);
+ free(found);
+ return ret;
+ }
+ free(found);
+ return 0;
+ }
+ }
+ return 0;
+}
+
+cJSON *cJSONUtils_GetPointer(cJSON *object,const char *pointer)
+{
+ while (*pointer++=='/' && object)
+ {
+ if (object->type==cJSON_Array)
+ {
+ int which=0; while (*pointer>='0' && *pointer<='9') which=(10*which) + *pointer++ - '0';
+ if (*pointer && *pointer!='/') return 0;
+ object=cJSON_GetArrayItem(object,which);
+ }
+ else if (object->type==cJSON_Object)
+ {
+ object=object->child; while (object && cJSONUtils_Pstrcasecmp(object->string,pointer)) object=object->next; /* GetObjectItem. */
+ while (*pointer && *pointer!='/') pointer++;
+ }
+ else return 0;
+ }
+ return object;
+}
+
+/* JSON Patch implementation. */
+static void cJSONUtils_InplaceDecodePointerString(char *string)
+{
+ char *s2=string;
+ for (;*string;s2++,string++) *s2=(*string!='~')?(*string):((*(++string)=='0')?'~':'/');
+ *s2=0;
+}
+
+static cJSON *cJSONUtils_PatchDetach(cJSON *object,const char *path)
+{
+ char *parentptr=0,*childptr=0;cJSON *parent=0,*ret=0;
+
+ parentptr=strdup(path); childptr=strrchr(parentptr,'/'); if (childptr) *childptr++=0;
+ parent=cJSONUtils_GetPointer(object,parentptr);
+ cJSONUtils_InplaceDecodePointerString(childptr);
+
+ if (!parent) ret=0; /* Couldn't find object to remove child from. */
+ else if (parent->type==cJSON_Array) ret=cJSON_DetachItemFromArray(parent,atoi(childptr));
+ else if (parent->type==cJSON_Object) ret=cJSON_DetachItemFromObject(parent,childptr);
+ free(parentptr);
+ return ret;
+}
+
+static int cJSONUtils_Compare(cJSON *a,cJSON *b)
+{
+ if (a->type!=b->type) return -1; /* mismatched type. */
+ switch (a->type)
+ {
+ case cJSON_Number: return (a->valueint!=b->valueint || a->valuedouble!=b->valuedouble)?-2:0; /* numeric mismatch. */
+ case cJSON_String: return (strcmp(a->valuestring,b->valuestring)!=0)?-3:0; /* string mismatch. */
+ case cJSON_Array: for (a=a->child,b=b->child;a && b;a=a->next,b=b->next) {int err=cJSONUtils_Compare(a,b);if (err) return err;}
+ return (a || b)?-4:0; /* array size mismatch. */
+ case cJSON_Object:
+ cJSONUtils_SortObject(a);
+ cJSONUtils_SortObject(b);
+ a=a->child,b=b->child;
+ while (a && b)
+ {
+ int err;
+ if (cJSONUtils_strcasecmp(a->string,b->string)) return -6; /* missing member */
+ err=cJSONUtils_Compare(a,b);if (err) return err;
+ a=a->next,b=b->next;
+ }
+ return (a || b)?-5:0; /* object length mismatch */
+
+ default: break;
+ }
+ return 0;
+}
+
+static int cJSONUtils_ApplyPatch(cJSON *object,cJSON *patch)
+{
+ cJSON *op=0,*path=0,*value=0,*parent=0;int opcode=0;char *parentptr=0,*childptr=0;
+
+ op=cJSON_GetObjectItem(patch,"op");
+ path=cJSON_GetObjectItem(patch,"path");
+ if (!op || !path) return 2; /* malformed patch. */
+
+ if (!strcmp(op->valuestring,"add")) opcode=0;
+ else if (!strcmp(op->valuestring,"remove")) opcode=1;
+ else if (!strcmp(op->valuestring,"replace"))opcode=2;
+ else if (!strcmp(op->valuestring,"move")) opcode=3;
+ else if (!strcmp(op->valuestring,"copy")) opcode=4;
+ else if (!strcmp(op->valuestring,"test")) return cJSONUtils_Compare(cJSONUtils_GetPointer(object,path->valuestring),cJSON_GetObjectItem(patch,"value"));
+ else return 3; /* unknown opcode. */
+
+ if (opcode==1 || opcode==2) /* Remove/Replace */
+ {
+ cJSON_Delete(cJSONUtils_PatchDetach(object,path->valuestring)); /* Get rid of old. */
+ if (opcode==1) return 0; /* For Remove, this is job done. */
+ }
+
+ if (opcode==3 || opcode==4) /* Copy/Move uses "from". */
+ {
+ cJSON *from=cJSON_GetObjectItem(patch,"from"); if (!from) return 4; /* missing "from" for copy/move. */
+
+ if (opcode==3) value=cJSONUtils_PatchDetach(object,from->valuestring);
+ if (opcode==4) value=cJSONUtils_GetPointer(object,from->valuestring);
+ if (!value) return 5; /* missing "from" for copy/move. */
+ if (opcode==4) value=cJSON_Duplicate(value,1);
+ if (!value) return 6; /* out of memory for copy/move. */
+ }
+ else /* Add/Replace uses "value". */
+ {
+ value=cJSON_GetObjectItem(patch,"value");
+ if (!value) return 7; /* missing "value" for add/replace. */
+ value=cJSON_Duplicate(value,1);
+ if (!value) return 8; /* out of memory for add/replace. */
+ }
+
+ /* Now, just add "value" to "path". */
+
+ parentptr=strdup(path->valuestring); childptr=strrchr(parentptr,'/'); if (childptr) *childptr++=0;
+ parent=cJSONUtils_GetPointer(object,parentptr);
+ cJSONUtils_InplaceDecodePointerString(childptr);
+
+ /* add, remove, replace, move, copy, test. */
+ if (!parent) {free(parentptr); cJSON_Delete(value); return 9;} /* Couldn't find object to add to. */
+ else if (parent->type==cJSON_Array)
+ {
+ if (!strcmp(childptr,"-")) cJSON_AddItemToArray(parent,value);
+ else cJSON_InsertItemInArray(parent,atoi(childptr),value);
+ }
+ else if (parent->type==cJSON_Object)
+ {
+ cJSON_DeleteItemFromObject(parent,childptr);
+ cJSON_AddItemToObject(parent,childptr,value);
+ }
+ else
+ {
+ cJSON_Delete(value);
+ }
+ free(parentptr);
+ return 0;
+}
+
+
+int cJSONUtils_ApplyPatches(cJSON *object,cJSON *patches)
+{
+ int err;
+ if (patches->type!=cJSON_Array) return 1; /* malformed patches. */
+ if (patches) patches=patches->child;
+ while (patches)
+ {
+ if ((err=cJSONUtils_ApplyPatch(object,patches))) return err;
+ patches=patches->next;
+ }
+ return 0;
+}
+
+static void cJSONUtils_GeneratePatch(cJSON *patches,const char *op,const char *path,const char *suffix,cJSON *val)
+{
+ cJSON *patch=cJSON_CreateObject();
+ cJSON_AddItemToObject(patch,"op",cJSON_CreateString(op));
+ if (suffix)
+ {
+ char *newpath=(char*)malloc(strlen(path)+cJSONUtils_PointerEncodedstrlen(suffix)+2);
+ cJSONUtils_PointerEncodedstrcpy(newpath+sprintf(newpath,"%s/",path),suffix);
+ cJSON_AddItemToObject(patch,"path",cJSON_CreateString(newpath));
+ free(newpath);
+ }
+ else cJSON_AddItemToObject(patch,"path",cJSON_CreateString(path));
+ if (val) cJSON_AddItemToObject(patch,"value",cJSON_Duplicate(val,1));
+ cJSON_AddItemToArray(patches,patch);
+}
+
+void cJSONUtils_AddPatchToArray(cJSON *array,const char *op,const char *path,cJSON *val) {cJSONUtils_GeneratePatch(array,op,path,0,val);}
+
+static void cJSONUtils_CompareToPatch(cJSON *patches,const char *path,cJSON *from,cJSON *to)
+{
+ if (from->type!=to->type) {cJSONUtils_GeneratePatch(patches,"replace",path,0,to); return; }
+
+ switch (from->type)
+ {
+ case cJSON_Number:
+ if (from->valueint!=to->valueint || from->valuedouble!=to->valuedouble)
+ cJSONUtils_GeneratePatch(patches,"replace",path,0,to);
+ return;
+
+ case cJSON_String:
+ if (strcmp(from->valuestring,to->valuestring)!=0)
+ cJSONUtils_GeneratePatch(patches,"replace",path,0,to);
+ return;
+
+ case cJSON_Array:
+ {
+ int c;char *newpath=(char*)malloc(strlen(path)+23); /* Allow space for 64bit int. */
+ for (c=0,from=from->child,to=to->child;from && to;from=from->next,to=to->next,c++){
+ sprintf(newpath,"%s/%d",path,c); cJSONUtils_CompareToPatch(patches,newpath,from,to);
+ }
+ for (;from;from=from->next,c++) {sprintf(newpath,"%d",c); cJSONUtils_GeneratePatch(patches,"remove",path,newpath,0); }
+ for (;to;to=to->next,c++) cJSONUtils_GeneratePatch(patches,"add",path,"-",to);
+ free(newpath);
+ return;
+ }
+
+ case cJSON_Object:
+ {
+ cJSON *a,*b;
+ cJSONUtils_SortObject(from);
+ cJSONUtils_SortObject(to);
+
+ a=from->child,b=to->child;
+ while (a || b)
+ {
+ int diff=(!a)?1:(!b)?-1:cJSONUtils_strcasecmp(a->string,b->string);
+ if (!diff)
+ {
+ char *newpath=(char*)malloc(strlen(path)+cJSONUtils_PointerEncodedstrlen(a->string)+2);
+ cJSONUtils_PointerEncodedstrcpy(newpath+sprintf(newpath,"%s/",path),a->string);
+ cJSONUtils_CompareToPatch(patches,newpath,a,b);
+ free(newpath);
+ a=a->next;
+ b=b->next;
+ }
+ else if (diff<0) {cJSONUtils_GeneratePatch(patches,"remove",path,a->string,0); a=a->next;}
+ else {cJSONUtils_GeneratePatch(patches,"add",path,b->string,b); b=b->next;}
+ }
+ return;
+ }
+
+ default: break;
+ }
+}
+
+
+cJSON* cJSONUtils_GeneratePatches(cJSON *from,cJSON *to)
+{
+ cJSON *patches=cJSON_CreateArray();
+ cJSONUtils_CompareToPatch(patches,"",from,to);
+ return patches;
+}
+
+
+static cJSON *cJSONUtils_SortList(cJSON *list)
+{
+ cJSON *first=list,*second=list,*ptr=list;
+
+ if (!list || !list->next) return list; /* One entry is sorted already. */
+
+ while (ptr && ptr->next && cJSONUtils_strcasecmp(ptr->string,ptr->next->string)<0) ptr=ptr->next; /* Test for list sorted. */
+ if (!ptr || !ptr->next) return list; /* Leave sorted lists unmodified. */
+ ptr=list;
+
+ while (ptr) {second=second->next;ptr=ptr->next;if (ptr) ptr=ptr->next;} /* Walk two pointers to find the middle. */
+ if (second && second->prev) second->prev->next=0; /* Split the lists */
+
+ first=cJSONUtils_SortList(first); /* Recursively sort the sub-lists. */
+ second=cJSONUtils_SortList(second);
+ list=ptr=0;
+
+ while (first && second) /* Merge the sub-lists */
+ {
+ if (cJSONUtils_strcasecmp(first->string,second->string)<0)
+ {
+ if (!list) list=ptr=first;
+ else {ptr->next=first;first->prev=ptr;ptr=first;}
+ first=first->next;
+ }
+ else
+ {
+ if (!list) list=ptr=second;
+ else {ptr->next=second;second->prev=ptr;ptr=second;}
+ second=second->next;
+ }
+ }
+ if (first) { if (!list) return first; ptr->next=first; first->prev=ptr; } /* Append any tails. */
+ if (second) { if (!list) return second; ptr->next=second; second->prev=ptr; }
+
+ return list;
+}
+
+void cJSONUtils_SortObject(cJSON *object) {object->child=cJSONUtils_SortList(object->child);}
+
+cJSON* cJSONUtils_MergePatch(cJSON *target, cJSON *patch)
+{
+ if (!patch || patch->type != cJSON_Object) {cJSON_Delete(target);return cJSON_Duplicate(patch,1);}
+ if (!target || target->type != cJSON_Object) {cJSON_Delete(target);target=cJSON_CreateObject();}
+
+ patch=patch->child;
+ while (patch)
+ {
+ if (patch->type == cJSON_NULL) cJSON_DeleteItemFromObject(target,patch->string);
+ else
+ {
+ cJSON *replaceme=cJSON_DetachItemFromObject(target,patch->string);
+ cJSON_AddItemToObject(target,patch->string,cJSONUtils_MergePatch(replaceme,patch));
+ }
+ patch=patch->next;
+ }
+ return target;
+}
+
+cJSON *cJSONUtils_GenerateMergePatch(cJSON *from,cJSON *to)
+{
+ cJSON *patch=0;
+ if (!to) return cJSON_CreateNull();
+ if (to->type!=cJSON_Object || !from || from->type!=cJSON_Object) return cJSON_Duplicate(to,1);
+ cJSONUtils_SortObject(from);
+ cJSONUtils_SortObject(to);
+ from=from->child;to=to->child;
+ patch=cJSON_CreateObject();
+ while (from || to)
+ {
+ int compare=from?(to?strcmp(from->string,to->string):-1):1;
+ if (compare<0)
+ {
+ cJSON_AddItemToObject(patch,from->string,cJSON_CreateNull());
+ from=from->next;
+ }
+ else if (compare>0)
+ {
+ cJSON_AddItemToObject(patch,to->string,cJSON_Duplicate(to,1));
+ to=to->next;
+ }
+ else
+ {
+ if (cJSONUtils_Compare(from,to)) cJSON_AddItemToObject(patch,to->string,cJSONUtils_GenerateMergePatch(from,to));
+ from=from->next;to=to->next;
+ }
+ }
+ if (!patch->child) {cJSON_Delete(patch);return 0;}
+ return patch;
+}
\ No newline at end of file
--- /dev/null
+#include "cJSON.h"
+
+/* Implement RFC6901 (https://tools.ietf.org/html/rfc6901) JSON Pointer spec. */
+cJSON *cJSONUtils_GetPointer(cJSON *object,const char *pointer);
+
+/* Implement RFC6902 (https://tools.ietf.org/html/rfc6902) JSON Patch spec. */
+cJSON* cJSONUtils_GeneratePatches(cJSON *from,cJSON *to);
+void cJSONUtils_AddPatchToArray(cJSON *array,const char *op,const char *path,cJSON *val); /* Utility for generating patch array entries. */
+int cJSONUtils_ApplyPatches(cJSON *object,cJSON *patches); /* Returns 0 for success. */
+
+/*
+// Note that ApplyPatches is NOT atomic on failure. To implement an atomic ApplyPatches, use:
+//int cJSONUtils_AtomicApplyPatches(cJSON **object, cJSON *patches)
+//{
+// cJSON *modme=cJSON_Duplicate(*object,1);
+// int error=cJSONUtils_ApplyPatches(modme,patches);
+// if (!error) {cJSON_Delete(*object);*object=modme;}
+// else cJSON_Delete(modme);
+// return error;
+//}
+// Code not added to library since this strategy is a LOT slower.
+*/
+
+/* Implement RFC7386 (https://tools.ietf.org/html/rfc7396) JSON Merge Patch spec. */
+cJSON* cJSONUtils_MergePatch(cJSON *target, cJSON *patch); /* target will be modified by patch. return value is new ptr for target. */
+cJSON *cJSONUtils_GenerateMergePatch(cJSON *from,cJSON *to); /* generates a patch to move from -> to */
+
+char *cJSONUtils_FindPointerFromObjectTo(cJSON *object,cJSON *target); /* Given a root object and a target object, construct a pointer from one to the other. */
+
+void cJSONUtils_SortObject(cJSON *object); /* Sorts the members of the object into alphabetical order. */
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