cJSON

mirror of Dave's cJSON
git clone git://git.thc420.xyz/cJSON
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commit f0fc6c50baafca642dd8e3e8d3308834ea1f2d22
parent 94df772485c92866ca417d92137747b2e3b0a917
Author: Max Bruckner <max@maxbruckner.de>
Date:   Fri,  7 Oct 2016 21:11:04 +0700

Merge pull request #29 from DaveGamble/reformatting

Reformatting code
Diffstat:
McJSON.c | 2641+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++------------------
McJSON.h | 92++++++++++++++++++++++++++++++++++++++++++++-----------------------------------
2 files changed, 2084 insertions(+), 649 deletions(-)

diff --git a/cJSON.c b/cJSON.c @@ -34,13 +34,31 @@ static const char *global_ep; -const char *cJSON_GetErrorPtr(void) {return global_ep;} +const char *cJSON_GetErrorPtr(void) +{ + return global_ep; +} -static int cJSON_strcasecmp(const char *s1,const char *s2) +/* case insensitive strcmp */ +static int cJSON_strcasecmp(const char *s1, const char *s2) { - if (!s1) return (s1==s2)?0:1;if (!s2) return 1; - for(; tolower(*s1) == tolower(*s2); ++s1, ++s2) if(*s1 == 0) return 0; - return tolower(*(const unsigned char *)s1) - tolower(*(const unsigned char *)s2); + if (!s1) + { + return (s1 == s2) ? 0 : 1; /* both NULL? */ + } + if (!s2) + { + return 1; + } + for(; tolower(*s1) == tolower(*s2); ++s1, ++s2) + { + if (*s1 == 0) + { + return 0; + } + } + + return tolower(*(const unsigned char *)s1) - tolower(*(const unsigned char *)s2); } static void *(*cJSON_malloc)(size_t sz) = malloc; @@ -48,718 +66,2125 @@ static void (*cJSON_free)(void *ptr) = free; static char* cJSON_strdup(const char* str) { - size_t len; - char* copy; + size_t len; + char* copy; + + len = strlen(str) + 1; + if (!(copy = (char*)cJSON_malloc(len))) + { + return 0; + } + memcpy(copy, str, len); - len = strlen(str) + 1; - if (!(copy = (char*)cJSON_malloc(len))) return 0; - memcpy(copy,str,len); - return copy; + return copy; } void cJSON_InitHooks(cJSON_Hooks* hooks) { - if (!hooks) { /* Reset 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; + 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; + 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; - } + 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) +static const char *parse_number(cJSON *item, const char *num) { - double n=0,sign=1,scale=0;int subscale=0,signsubscale=1; + double n = 0; + double sign = 1; + double scale = 0; + int subscale = 0; + int signsubscale = 1; + + /* Has sign? */ + if (*num == '-') + { + sign = -1; + num++; + } + /* is zero */ + if (*num == '0') + { + num++; + } + /* Number? */ + if ((*num >= '1') && (*num <= '9')) + { + do + { + n = (n * 10.0) + (*num++ - '0'); + } + while ((*num >= '0') && (*num<='9')); + } + /* Fractional part? */ + if ((*num == '.') && (num[1] >= '0') && (num[1] <= '9')) + { + num++; + do + { + n = (n *10.0) + (*num++ - '0'); + scale--; + } while ((*num >= '0') && (*num <= '9')); + } + /* Exponent? */ + if ((*num == 'e') || (*num == 'E')) + { + num++; + /* With sign? */ + if (*num == '+') + { + num++; + } + else if (*num == '-') + { + signsubscale = -1; + num++; + } + /* Number? */ + while ((*num>='0') && (*num<='9')) + { + subscale = (subscale * 10) + (*num++ - '0'); + } + } + + /* number = +/- number.fraction * 10^+/- exponent */ + n = sign * n * pow(10.0, (scale + subscale * signsubscale)); - 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? */ - } + item->valuedouble = n; + item->valueint = (int)n; + item->type = cJSON_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; + 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; } +/* calculate the next largest power of 2 */ +static int pow2gt (int x) +{ + --x; -typedef struct {char *buffer; int length; int offset; } printbuffer; + x |= x >> 1; + x |= x >> 2; + x |= x >> 4; + x |= x >> 8; + x |= x >> 16; + + return x + 1; +} -static char* ensure(printbuffer *p,int needed) +typedef struct { - char *newbuffer;int newsize; - if (!p || !p->buffer) return 0; - needed+=p->offset; - if (needed<=p->length) return p->buffer+p->offset; + char *buffer; + int length; + int offset; +} printbuffer; - 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; +/* realloc printbuffer if necessary to have at least "needed" bytes more */ +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; } +/* calculate the new length of the string in a printbuffer */ static int update(printbuffer *p) { - char *str; - if (!p || !p->buffer) return 0; - str=p->buffer+p->offset; - return p->offset+strlen(str); + 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 (d*0!=0) sprintf(str,"null"); /* This checks for NaN and Infinity */ - else 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 char *print_number(cJSON *item, printbuffer *p) +{ + char *str = 0; + double d = item->valuedouble; + /* special case for 0. */ + if (d == 0) + { + if (p) + { + str = ensure(p, 2); + } + else + { + str = (char*)cJSON_malloc(2); + } + if (str) + { + strcpy(str,"0"); + } + } + /* value is an int */ + else if ((fabs(((double)item->valueint) - d) <= DBL_EPSILON) && (d <= INT_MAX) && (d >= INT_MIN)) + { + if (p) + { + str = ensure(p, 21); + } + else + { + /* 2^64+1 can be represented in 21 chars. */ + str = (char*)cJSON_malloc(21); + } + if (str) + { + sprintf(str, "%d", item->valueint); + } + } + /* value is a floating point number */ + else + { + if (p) + { + /* This is a nice tradeoff. */ + str = ensure(p, 64); + } + else + { + /* This is a nice tradeoff. */ + str=(char*)cJSON_malloc(64); + } + if (str) + { + /* This checks for NaN and Infinity */ + if ((d * 0) != 0) + { + sprintf(str, "null"); + } + else 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; } +/* parse 4 digit hexadecimal number */ 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; + unsigned h = 0; + /* first digit */ + 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 /* invalid */ + { + return 0; + } + + + /* second digit */ + 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 /* invalid */ + { + return 0; + } + + /* third digit */ + 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 /* invalid */ + { + return 0; + } + + /* fourth digit */ + 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 /* invalid */ + { + return 0; + } + + return h; } +/* first bytes of UTF8 encoding for a given length in bytes */ +static const unsigned char firstByteMark[7] = +{ + 0x00, /* should never happen */ + 0x00, /* 0xxxxxxx */ + 0xC0, /* 110xxxxx */ + 0xE0, /* 1110xxxx */ + 0xF0, /* 11110xxx */ + 0xF8, + 0xFC +}; + /* 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 **ep) -{ - const char *ptr=str+1,*end_ptr=str+1;char *ptr2;char *out;int len=0;unsigned uc,uc2; - if (*str!='\"') {*ep=str;return 0;} /* not a string! */ - - while (*end_ptr!='\"' && *end_ptr && ++len) - { - if (*end_ptr++ == '\\') - { - if (*end_ptr == '\0') - { - /* prevent buffer overflow when last input character is a backslash */ - return 0; - } - end_ptr++; /* Skip escaped quotes. */ - } - } - - out=(char*)cJSON_malloc(len+1); /* This is how long we need for the string, roughly. */ - if (!out) return 0; - item->valuestring=out; /* assign here so out will be deleted during cJSON_Delete() later */ - item->type=cJSON_String; - - ptr=str+1;ptr2=out; - while (ptr < end_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 (ptr >= end_ptr) {*ep=str;return 0;} /* invalid */ - - if ((uc>=0xDC00 && uc<=0xDFFF) || uc==0) {*ep=str;return 0;} /* check for invalid. */ - - if (uc>=0xD800 && uc<=0xDBFF) /* UTF16 surrogate pairs. */ - { - if (ptr+6 > end_ptr) {*ep=str;return 0;} /* invalid */ - if (ptr[1]!='\\' || ptr[2]!='u') {*ep=str;return 0;} /* missing second-half of surrogate. */ - uc2=parse_hex4(ptr+3);ptr+=6; - if (uc2<0xDC00 || uc2>0xDFFF) {*ep=str;return 0;} /* 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++; - return ptr; +static const char *parse_string(cJSON *item, const char *str, const char **ep) +{ + const char *ptr = str + 1; + const char *end_ptr =str + 1; + char *ptr2; + char *out; + int len = 0; + unsigned uc; + unsigned uc2; + + /* not a string! */ + if (*str != '\"') + { + *ep = str; + return 0; + } + + while ((*end_ptr != '\"') && *end_ptr && ++len) + { + if (*end_ptr++ == '\\') + { + if (*end_ptr == '\0') + { + /* prevent buffer overflow when last input character is a backslash */ + return 0; + } + /* Skip escaped quotes. */ + end_ptr++; + } + } + + /* This is at most how long we need for the string, roughly. */ + out = (char*)cJSON_malloc(len + 1); + if (!out) + { + return 0; + } + item->valuestring = out; /* assign here so out will be deleted during cJSON_Delete() later */ + item->type = cJSON_String; + + ptr = str + 1; + ptr2 = out; + /* loop through the string literal */ + while (ptr < end_ptr) + { + if (*ptr != '\\') + { + *ptr2++ = *ptr++; + } + /* escape sequence */ + 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. See RFC2781 and RFC3629. */ + uc = parse_hex4(ptr + 1); /* get the unicode char. */ + ptr += 4; + if (ptr >= end_ptr) + { + /* invalid */ + *ep = str; + return 0; + } + /* check for invalid. */ + if (((uc >= 0xDC00) && (uc <= 0xDFFF)) || (uc == 0)) + { + *ep = str; + return 0; + } + + /* UTF16 surrogate pairs. */ + if ((uc >= 0xD800) && (uc<=0xDBFF)) + { + if ((ptr + 6) > end_ptr) + { + /* invalid */ + *ep = str; + return 0; + } + if ((ptr[1] != '\\') || (ptr[2] != 'u')) + { + /* missing second-half of surrogate. */ + *ep = str; + return 0; + } + uc2 = parse_hex4(ptr + 3); + ptr += 6; /* \uXXXX */ + if ((uc2 < 0xDC00) || (uc2 > 0xDFFF)) + { + /* invalid second-half of surrogate. */ + *ep = str; + return 0; + } + /* calculate unicode codepoint from the surrogate pair */ + uc = 0x10000 + (((uc & 0x3FF) << 10) | (uc2 & 0x3FF)); + } + + /* encode as UTF8 + * takes at maximum 4 bytes to encode: + * 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx */ + len = 4; + if (uc < 0x80) + { + /* normal ascii, encoding 0xxxxxxx */ + len = 1; + } + else if (uc < 0x800) + { + /* two bytes, encoding 110xxxxx 10xxxxxx */ + len = 2; + } + else if (uc < 0x10000) + { + /* three bytes, encoding 1110xxxx 10xxxxxx 10xxxxxx */ + len = 3; + } + ptr2 += len; + + switch (len) { + case 4: + /* 10xxxxxx */ + *--ptr2 = ((uc | 0x80) & 0xBF); + uc >>= 6; + case 3: + /* 10xxxxxx */ + *--ptr2 = ((uc | 0x80) & 0xBF); + uc >>= 6; + case 2: + /* 10xxxxxx */ + *--ptr2 = ((uc | 0x80) & 0xBF); + uc >>= 6; + case 1: + /* depending on the length in bytes this determines the + * encoding ofthe first UTF8 byte */ + *--ptr2 = (uc | firstByteMark[len]); + } + ptr2 += len; + break; + default: + *ptr2++ = *ptr; + break; + } + ptr++; + } + } + *ptr2 = '\0'; + if (*ptr == '\"') + { + ptr++; + } + + 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; - - if (!str) - { - if (p) out=ensure(p,3); - else out=(char*)cJSON_malloc(3); - if (!out) return 0; - strcpy(out,"\"\""); - return out; - } - - 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; - } - - 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);} +static char *print_string_ptr(const char *str, printbuffer *p) +{ + const char *ptr; + char *ptr2; + char *out; + int len = 0; + int flag = 0; + unsigned char token; + + /* empty string */ + if (!str) + { + if (p) + { + out = ensure(p, 3); + } + else + { + out = (char*)cJSON_malloc(3); + } + if (!out) + { + return 0; + } + strcpy(out, "\"\""); + + return out; + } + + /* set "flag" to 1 if something needs to be escaped */ + for (ptr = str; *ptr; ptr++) + { + flag |= (((*ptr > 0) && (*ptr < 32)) /* unprintable characters */ + || (*ptr == '\"') /* double quote */ + || (*ptr == '\\')) /* backslash */ + ? 1 + : 0; + } + /* no characters have to be escaped */ + 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; + } + + ptr = str; + /* calculate additional space that is needed for escaping */ + while ((token = *ptr) && ++len) + { + if (strchr("\"\\\b\f\n\r\t", token)) + { + len++; /* +1 for the backslash */ + } + else if (token < 32) + { + len += 5; /* +5 for \uXXXX */ + } + ptr++; + } + + if (p) + { + out = ensure(p, len + 3); + } + else + { + out = (char*)cJSON_malloc(len + 3); + } + if (!out) + { + return 0; + } + + ptr2 = out; + ptr = str; + *ptr2++ = '\"'; + /* copy the string */ + while (*ptr) + { + if (((unsigned char)*ptr > 31) && (*ptr != '\"') && (*ptr != '\\')) + { + /* normal character, copy */ + *ptr2++ = *ptr++; + } + else + { + /* character needs to be escaped */ + *ptr2++ = '\\'; + switch (token = *ptr++) + { + case '\\': + *ptr2++ = '\\'; + break; + case '\"': + *ptr2++ = '\"'; + break; + case '\b': + *ptr2++ = 'b'; + break; + case '\f': + *ptr2++ = 'f'; + break; + case '\n': + *ptr2++ = 'n'; + break; + case '\r': + *ptr2++ = 'r'; + break; + case '\t': + *ptr2++ = 't'; + break; + default: + /* escape and print as unicode codepoint */ + sprintf(ptr2, "u%04x", token); + ptr2 += 5; + break; + } + } + } + *ptr2++ = '\"'; + *ptr2++ = '\0'; + + return out; +} + +/* Invoke 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,const char **ep); -static char *print_value(cJSON *item,int depth,int fmt,printbuffer *p); -static const char *parse_array(cJSON *item,const char *value,const char **ep); -static char *print_array(cJSON *item,int depth,int fmt,printbuffer *p); -static const char *parse_object(cJSON *item,const char *value,const char **ep); -static char *print_object(cJSON *item,int depth,int fmt,printbuffer *p); +static const char *parse_value(cJSON *item, const char *value, const char **ep); +static char *print_value(cJSON *item, int depth, int fmt, printbuffer *p); +static const char *parse_array(cJSON *item, const char *value, const char **ep); +static char *print_array(cJSON *item, int depth, int fmt, printbuffer *p); +static const char *parse_object(cJSON *item, const char *value, const char **ep); +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;} +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) +cJSON *cJSON_ParseWithOpts(const char *value, const char **return_parse_end, int require_null_terminated) { - const char *end=0,**ep=return_parse_end?return_parse_end:&global_ep; - cJSON *c=cJSON_New_Item(); - *ep=0; - if (!c) return 0; /* memory fail */ + const char *end = 0; + /* use global error pointer if no specific one was given */ + const char **ep = return_parse_end ? return_parse_end : &global_ep; + cJSON *c = cJSON_New_Item(); + *ep = 0; + if (!c) /* memory fail */ + { + return 0; + } + + end = parse_value(c, skip(value), ep); + if (!end) + { + /* parse failure. ep is set. */ + cJSON_Delete(c); + return 0; + } - end=parse_value(c,skip(value),ep); - 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; + } - /* 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; + return c; } + /* Default options for cJSON_Parse */ -cJSON *cJSON_Parse(const char *value) {return cJSON_ParseWithOpts(value,0,0);} +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_Print(cJSON *item) +{ + return print_value(item, 0, 1, 0); +} -char *cJSON_PrintBuffered(cJSON *item,int prebuffer,int fmt) +char *cJSON_PrintUnformatted(cJSON *item) { - printbuffer p; - p.buffer=(char*)cJSON_malloc(prebuffer); - p.length=prebuffer; - p.offset=0; - return print_value(item,0,fmt,&p); + 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); } /* Parser core - when encountering text, process appropriately. */ -static const char *parse_value(cJSON *item,const char *value,const char **ep) +static const char *parse_value(cJSON *item, const char *value, const char **ep) { - 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,ep); } - if (*value=='-' || (*value>='0' && *value<='9')) { return parse_number(item,value); } - if (*value=='[') { return parse_array(item,value,ep); } - if (*value=='{') { return parse_object(item,value,ep); } + if (!value) + { + /* Fail on null. */ + return 0; + } - *ep=value;return 0; /* failure. */ + /* parse the different types of values */ + 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, ep); + } + if ((*value == '-') || ((*value >= '0') && (*value <= '9'))) + { + return parse_number(item, value); + } + if (*value == '[') + { + return parse_array(item, value, ep); + } + if (*value == '{') + { + return parse_object(item, value, ep); + } + + *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; +static char *print_value(cJSON *item, int depth, int fmt, printbuffer *p) +{ + char *out = 0; + + if (!item) + { + return 0; + } + if (p) + { + switch ((item->type) & 0xFF) + { + 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) & 0xFF) + { + 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,const char **ep) { - cJSON *child; - if (*value!='[') {*ep=value;return 0;} /* not an array! */ + cJSON *child; + if (*value != '[') + { + /* not an array! */ + *ep = value; + return 0; + } + + item->type = cJSON_Array; + value = skip(value + 1); + if (*value == ']') + { + /* empty array. */ + return value + 1; + } + + item->child = child = cJSON_New_Item(); + if (!item->child) + { + /* memory fail */ + return 0; + } + /* skip any spacing, get the value. */ + value = skip(parse_value(child, skip(value), ep)); + if (!value) + { + return 0; + } - item->type=cJSON_Array; - value=skip(value+1); - if (*value==']') return value+1; /* empty array. */ + /* loop through the comma separated array elements */ + while (*value == ',') + { + cJSON *new_item; + if (!(new_item = cJSON_New_Item())) + { + /* memory fail */ + return 0; + } + /* add new item to end of the linked list */ + child->next = new_item; + new_item->prev = child; + child = new_item; + + /* go to the next comma */ + value = skip(parse_value(child, skip(value + 1), ep)); + if (!value) + { + /* memory fail */ + return 0; + } + } - item->child=child=cJSON_New_Item(); - if (!item->child) return 0; /* memory fail */ - value=skip(parse_value(child,skip(value),ep)); /* skip any spacing, get the value. */ - if (!value) return 0; + if (*value == ']') + { + /* end of array */ + return value + 1; + } - 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),ep)); - if (!value) return 0; /* memory fail */ - } + /* malformed. */ + *ep = value; - if (*value==']') return value+1; /* end of array */ - *ep=value;return 0; /* malformed. */ + return 0; } /* 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; +static char *print_array(cJSON *item, int depth, int fmt, printbuffer *p) +{ + char **entries; + char *out = 0; + char *ptr; + char *ret; + int len = 5; + cJSON *child = item->child; + int numentries = 0; + int i = 0; + int fail = 0; + 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. */ + /* opening square bracket */ + 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 pointers to all printed values */ + 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) + { + /* free all the entries in the array */ + 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,const char **ep) -{ - 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),ep)); - 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),ep)); /* 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),ep)); - 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),ep)); /* skip any spacing, get the value. */ - if (!value) return 0; - } - - if (*value=='}') return value+1; /* end of array */ - *ep=value;return 0; /* malformed. */ +static const char *parse_object(cJSON *item, const char *value, const char **ep) +{ + cJSON *child; + if (*value != '{') + { + /* not an object! */ + *ep = value; + return 0; + } + + item->type = cJSON_Object; + value = skip(value + 1); + if (*value == '}') + { + /* empty object. */ + return value + 1; + } + + child = cJSON_New_Item(); + item->child = child; + if (!item->child) + { + return 0; + } + /* parse first key */ + value = skip(parse_string(child, skip(value), ep)); + if (!value) + { + return 0; + } + /* use string as key, not value */ + child->string = child->valuestring; + child->valuestring = 0; + + if (*value != ':') + { + /* invalid object. */ + *ep = value; + return 0; + } + /* skip any spacing, get the value. */ + value = skip(parse_value(child, skip(value + 1), ep)); + if (!value) + { + return 0; + } + + while (*value == ',') + { + cJSON *new_item; + if (!(new_item = cJSON_New_Item())) + { + /* memory fail */ + return 0; + } + /* add to linked list */ + child->next = new_item; + new_item->prev = child; + + child = new_item; + value = skip(parse_string(child, skip(value + 1), ep)); + if (!value) + { + return 0; + } + + /* use string as key, not value */ + child->string = child->valuestring; + child->valuestring = 0; + + if (*value != ':') + { + /* invalid object. */ + *ep = value; + return 0; + } + /* skip any spacing, get the value. */ + value = skip(parse_value(child, skip(value + 1), ep)); + if (!value) + { + return 0; + } + } + /* end of object */ + if (*value == '}') + { + return value + 1; + } + + /* malformed */ + *ep = value; + return 0; } /* 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;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 && !fail) - { - 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; +static char *print_object(cJSON *item, int depth, int fmt, printbuffer *p) +{ + char **entries = 0; + char **names = 0; + char *out = 0; + char *ptr; + char *ret; + char *str; + int len = 7; + int i = 0; + int j; + cJSON *child = item->child; + int numentries = 0; + int fail = 0; + 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; i++) + { + *ptr++ = '\t'; + } + } + *ptr++ = '}'; + *ptr++ = '\0'; + + return out; + } + + if (p) + { + /* Compose the output: */ + i = p->offset; + len = fmt ? 2 : 1; /* fmt: {\n */ + 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 key */ + 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 */ + print_value(child, depth, fmt, p); + p->offset = update(p); + + /* print comma if not last */ + 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 && !fail) + { + names[i] = str = print_string_ptr(child->string, 0); /* print key */ + 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) + { + /* free all the printed keys and values */ + 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?array->child:0;while (c && item>0) item--,c=c->next; return c;} -cJSON *cJSON_GetObjectItem(cJSON *object,const char *string) {cJSON *c=object?object->child:0;while (c && cJSON_strcasecmp(c->string,string)) c=c->next; return c;} -int cJSON_HasObjectItem(cJSON *object,const char *string) {return cJSON_GetObjectItem(object,string)?1:0;} +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 ? array->child : 0; + while (c && item > 0) + { + item--; + c = c->next; + } + + return c; +} + +cJSON *cJSON_GetObjectItem(cJSON *object, const char *string) +{ + cJSON *c = object ? object->child : 0; + while (c && cJSON_strcasecmp(c->string, string)) + { + c = c->next; + } + return c; +} + +int cJSON_HasObjectItem(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;} +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;} +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));} +void cJSON_AddItemToArray(cJSON *array, cJSON *item) +{ + cJSON *c = array->child; + if (!item) + { + return; + } + if (!c) + { + /* list is empty, start new one */ + array->child = item; + } + else + { + /* append to the end */ + while (c && c->next) + { + c = c->next; + } + suffix_object(c, item); + } +} + +void cJSON_AddItemToObject(cJSON *object, const char *string, cJSON *item) +{ + if (!item) + { + return; + } + + /* free old key and set new one */ + if (item->string) + { + cJSON_free(item->string); + } + item->string = cJSON_strdup(string); + + cJSON_AddItemToArray(object,item); +} + +/* Add an item to an object with constant string as key */ +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) + { + /* item doesn't exist */ + return 0; + } + if (c->prev) + { + /* not the first element */ + c->prev->next = c->next; + } + if (c->next) + { + c->next->prev = c->prev; + } + if (c==array->child) + { + array->child = c->next; + } + /* make sure the detached item doesn't point anywhere anymore */ + 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);}} +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);if(!item->valuestring){cJSON_Delete(item);return 0;}}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;} +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); + if(!item->valuestring) + { + cJSON_Delete(item); + return 0; + } + } + + 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(!n){cJSON_Delete(a);return 0;}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(!n){cJSON_Delete(a);return 0;}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(!n){cJSON_Delete(a);return 0;}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(!n){cJSON_Delete(a);return 0;}if(!i)a->child=n;else suffix_object(p,n);p=n;}return a;} +cJSON *cJSON_CreateIntArray(const int *numbers, int count) +{ + int i; + cJSON *n = 0; + cJSON *p = 0; + cJSON *a = cJSON_CreateArray(); + for(i = 0; a && (i < count); i++) + { + n = cJSON_CreateNumber(numbers[i]); + if (!n) + { + cJSON_Delete(a); + return 0; + } + 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; + cJSON *p = 0; + cJSON *a = cJSON_CreateArray(); + for(i = 0; a && (i < count); i++) + { + n = cJSON_CreateNumber(numbers[i]); + if(!n) + { + cJSON_Delete(a); + return 0; + } + 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; + cJSON *p = 0; + cJSON *a = cJSON_CreateArray(); + for(i = 0;a && (i < count); i++) + { + n = cJSON_CreateNumber(numbers[i]); + if(!n) + { + cJSON_Delete(a); + return 0; + } + 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; + cJSON *p = 0; + cJSON *a = cJSON_CreateArray(); + for (i = 0; a && (i < count); i++) + { + n = cJSON_CreateString(strings[i]); + if(!n) + { + cJSON_Delete(a); + return 0; + } + 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; +cJSON *cJSON_Duplicate(cJSON *item, int recurse) +{ + cJSON *newitem; + cJSON *cptr; + cJSON *nptr = 0; + cJSON *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) + { + /* If newitem->child already set, then crosswire ->prev and ->next and move on */ + nptr->next = newchild; + newchild->prev = nptr; + nptr = newchild; + } + else + { + /* Set newitem->child and move to it */ + newitem->child = newchild; nptr = newchild; + } + 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. */ + char *into = json; + while (*json) + { + if (*json == ' ') + { + json++; + } + else if (*json == '\t') + { + /* Whitespace characters. */ + json++; + } + else if (*json == '\r') + { + json++; + } + else if (*json=='\n') + { + json++; + } + else if ((*json == '/') && (json[1] == '/')) + { + /* double-slash comments, to end of line. */ + while (*json && (*json != '\n')) + { + json++; + } + } + else if ((*json == '/') && (json[1] == '*')) + { + /* multiline comments. */ + while (*json && !((*json == '*') && (json[1] == '/'))) + { + json++; + } + json += 2; + } + else if (*json == '\"') + { + /* string literals, which are \" sensitive. */ + *into++ = *json++; + while (*json && (*json != '\"')) + { + if (*json == '\\') + { + *into++=*json++; + } + *into++ = *json++; + } + *into++ = *json++; + } + else + { + /* All other characters. */ + *into++ = *json++; + } + } + + /* and null-terminate. */ + *into = '\0'; } diff --git a/cJSON.h b/cJSON.h @@ -41,20 +41,30 @@ extern "C" #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. */ +typedef struct cJSON +{ + /* next/prev allow you to walk array/object chains. Alternatively, use GetArraySize/GetArrayItem/GetObjectItem */ + struct cJSON *next; + struct cJSON *prev; + /* An array or object item will have a child pointer pointing to a chain of the items in the array/object. */ + struct cJSON *child; + + /* The type of the item, as above. */ + int type; + + /* The item's string, if type==cJSON_String */ + char *valuestring; + /* The item's number, if type==cJSON_Number */ + int valueint; + /* The item's number, if type==cJSON_Number */ + double valuedouble; + + /* The item's name string, if this item is the child of, or is in the list of subitems of an object. */ + char *string; } cJSON; -typedef struct cJSON_Hooks { +typedef struct cJSON_Hooks +{ void *(*malloc_fn)(size_t sz); void (*free_fn)(void *ptr); } cJSON_Hooks; @@ -70,17 +80,17 @@ 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); +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); +extern cJSON *cJSON_GetArrayItem(cJSON *array, int item); /* Get item "string" from object. Case insensitive. */ -extern cJSON *cJSON_GetObjectItem(cJSON *object,const char *string); -extern int cJSON_HasObjectItem(cJSON *object,const char *string); +extern cJSON *cJSON_GetObjectItem(cJSON *object, const char *string); +extern int cJSON_HasObjectItem(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); @@ -95,56 +105,56 @@ 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); +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 */ +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); +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); - +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_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); +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. */ /* If you supply a ptr in return_parse_end and parsing fails, then return_parse_end will contain a pointer to the error. If not, then cJSON_GetErrorPtr() does the job. */ -extern cJSON *cJSON_ParseWithOpts(const char *value,const char **return_parse_end,int require_null_terminated); +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)) +#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)) +#define cJSON_SetIntValue(object,val) ((object) ? (object)->valueint = (object)->valuedouble = (val) : (val)) +#define cJSON_SetNumberValue(object,val) ((object) ? (object)->valueint = (object)->valuedouble = (val) : (val)) /* Macro for iterating over an array */ -#define cJSON_ArrayForEach(pos, head) for(pos = (head)->child; pos != NULL; pos = pos->next) +#define cJSON_ArrayForEach(pos, head) for(pos = (head)->child; pos != NULL; pos = pos->next) #ifdef __cplusplus }