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C++ cJSON_malloc函数代码示例

本文整理汇总了C++中cJSON_malloc函数的典型用法代码示例。如果您正苦于以下问题：C++ cJSON_malloc函数的具体用法？C++ cJSON_malloc怎么用？C++ cJSON_malloc使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。


在下文中一共展示了cJSON_malloc函数的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: sprintf

/* Render the number nicely from the given item into a string. */
static char *print_number(cJSON *item)
{
	char *str;
	double d = item->valuedouble;
	if ( fabs(((double)item->valueint) - d) <= DBL_EPSILON && d >= (1. - DBL_EPSILON) && d < (1LL << 62) )//d <= INT_MAX && d >= INT_MIN )
	{
		str = (char *)cJSON_malloc(24);	/* 2^64+1 can be represented in 21 chars + sign. */
		if ( str != 0 )
            sprintf(str,"%lld",(long long)item->valueint);
	}
	else
	{
		str = (char *)cJSON_malloc(64);	/* This is a nice tradeoff. */
		if ( str != 0 )
		{
			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,"%.8f",d);
		}
	}
	return str;
}
开发者ID:sebaslogen，项目名称:btcd，代码行数:25，代码来源:cJSON.c

示例2: print_number

/* Render the number nicely from the given item into a string. */
static char *
print_number(cJSON * item)
{
	char *str;
	double d = item->valuedouble;

	if (fabs(((double) item->valueint) - d) <= DBL_EPSILON && d <= INT_MAX
		&& d >= INT_MIN) {
		str = (char *) cJSON_malloc(21);	/* 2^64+1 can be represented in 21 chars. */
		if (str)
			sprintf(str, "%d", item->valueint);
	} else {
		str = (char *) cJSON_malloc(64);	/* This is a nice tradeoff. */
		if (str) {
			if (fabs(floor(d) - d) <= DBL_EPSILON)
				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;
}
开发者ID:sofartogo，项目名称:websql，代码行数:25，代码来源:cJSON.c

示例3: ensure

/* 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;
}
开发者ID:hurley25，项目名称:ttms，代码行数:37，代码来源:cJSON.c

示例4: cJSONUtils_strdup

static unsigned char* cJSONUtils_strdup(const unsigned char* const string)
{
    size_t length = 0;
    unsigned char *copy = NULL;

    length = strlen((const char*)string) + sizeof("");
    copy = (unsigned char*) cJSON_malloc(length);
    if (copy == NULL)
    {
        return NULL;
    }
    memcpy(copy, string, length);

    return copy;
}
开发者ID:HanYu1983，项目名称:HanWork，代码行数:15，代码来源:cJSON_Utils.c

示例5: cJSON_strdup

static char *ICACHE_FLASH_ATTR
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;
}
开发者ID:hxy513696765，项目名称:ESP8266JSON-WEATHER，代码行数:15，代码来源:cJSON.c

示例6: ensure

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;
}
开发者ID:duhaifeng，项目名称:c_learn，代码行数:16，代码来源:cjson.c

示例7: while

static const char *parse_string(cJSON *item,const char *str)
{
    const char *ptr=str+1;char *ptr2;char *out;int len=0;unsigned uc;
    if (*str!='\"') return 0;   /* not a string! */

    while (*ptr!='\"' && (unsigned char)*ptr>31 && ++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!='\"' && (unsigned char)*ptr>31)
    {
        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. DOES NOT SUPPORT SURROGATE PAIRS CORRECTLY. */
                    sscanf(ptr+1,"%4x",&uc);    /* get the unicode char. */
                    len=3;if (uc<0x80) len=1;else if (uc<0x800) len=2;ptr2+=len;

                    switch (len) {
                        case 3: *--ptr2 =((uc | 0x80) & 0xBF); uc >>= 6;
                        case 2: *--ptr2 =((uc | 0x80) & 0xBF); uc >>= 6;
                        case 1: *--ptr2 =(uc | firstByteMark[len]);
                    }
                    ptr2+=len;ptr+=4;
                    break;
                default:  *ptr2++=*ptr; break;
            }
            ptr++;
        }
    }
    *ptr2=0;
    if (*ptr=='\"') ptr++;
    item->valuestring=out;
    item->type=cJSON_String;
    return ptr;
}
开发者ID:killgxlin，项目名称:libcouchbase，代码行数:46，代码来源:cJSON.c

示例8: cJSON_New_Pool

/* This will create an allocation pool */
static cJSON_Pool * cJSON_New_Pool()
{
    if (CJSON_POOL_ALLOC_SIZE <= 0) {
        return 0;
    } else {
        cJSON_Pool * pool = (cJSON_Pool*)cJSON_malloc(sizeof(cJSON_Pool));
        if (!pool) {
            return 0;
        }

        memset(pool, 0, sizeof(cJSON_Pool));
        pool->free_items = 0;
        pool->blocks = 0;
        pool->refcount = 0;

        return pool;
    }
}
开发者ID:killgxlin，项目名称:libcouchbase，代码行数:19，代码来源:cJSON.c

示例9: cJSON_malloc

/* Render the number nicely from the given item into a string. */
static char *print_number( cJSON *item )
{
	char *str;
	double f, f2;
	int64_t i;

	str = (char*) cJSON_malloc( 64 );
	if ( str ) {
		f = item->valuefloat;
		i = f;
		f2 = i;
		if ( f2 == f && item->valueint >= LLONG_MIN && item->valueint <= LLONG_MAX )
			sprintf( str, "%lld", (long long) item->valueint );
		else
			sprintf( str, "%g", item->valuefloat );
	}
	return str;
}
开发者ID:Blankwonder，项目名称:iperf，代码行数:19，代码来源:cjson.c

示例10: if

/* Render the number nicely from the given item into a string. */
static char *print_number_2d(cJSON *item, int sample, ngx_pool_t *pool)
{
    char *str;
    double d1 = 0,d2 = 0;
    
    if(sample >= item->d2_len)
        return NULL;

    if(item->d2_val1)
        d1 = item->d2_val1[sample];
    if(item->d2_val2)
        d2 = item->d2_val2[sample];

    /* This is a nice tradeoff. */
    str=(char*)cJSON_malloc(pool, 64+64);
    if (str) {
        if(item->d2_val1) {
            if (fabs(floor(d1)-d1)<=DBL_EPSILON && fabs(d1)<1.0e60)
                sprintf(str,"%.04f",d1);
            else if (fabs(d1)<1.0e-2 || fabs(d1)>1.0e9)
                sprintf(str,"%.04e",d1);
            else 
                sprintf(str,"%.04f",d1);
        }
        if(item->d2_val1 && item->d2_val2) {
            if (fabs(floor(d2)-d2)<=DBL_EPSILON && fabs(d2)<1.0e60)
                sprintf(str,"%s,%.04f",str, d2);
            else if (fabs(d2)<1.0e-2 || fabs(d2)>1.0e9)
                sprintf(str,"%s,%.04e",str, d2);
            else 
                sprintf(str,"%s,%.04f",str, d2);
        } else if(item->d2_val2) {
            if (fabs(floor(d2)-d2)<=DBL_EPSILON && fabs(d2)<1.0e60)
                sprintf(str,"%.04f",d2);
            else if (fabs(d2)<1.0e-2 || fabs(d2)>1.0e9)
                sprintf(str,"%.04e",d2);
            else 
                sprintf(str,"%.04f",d2);
        }        
    }

    return str;
}
开发者ID:1nfused，项目名称:RedPitaya，代码行数:44，代码来源:cJSON.c

示例11: while

/* Render the cstring provided to an escaped version that can be printed. */
static char *print_string_ptr(const char *str)
{
	const char *ptr;char *ptr2,*out;int len=0;unsigned char token;
  int quote = 0;
	
	if (!str) return cJSON_strdup("");
	ptr=str;
  while ((token=*ptr) && ++len) {
    if (strchr("\"\\\b\f\n\r\t",token)){ 
      len++; quote = 1;
    } else if (token<32){ len+=5; quote = 1; }
    ptr++;
  }

	out=(char*)cJSON_malloc(len+3);
	if (!out) return 0;

	ptr2=out;ptr=str;
	if( quote ) *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 */
			}
		}
	}
	if( quote )*ptr2++='\"';
  *ptr2++=0;
	return out;
}
开发者ID:silvioq，项目名称:qgames-server，代码行数:43，代码来源:cYAML.c

示例12: sprintf

static char *print_float(cJSON *item)
{
	char *str = NULL;

    if (item && (item->type == cJSON_Float)) {
	    double d=item->valuedouble;

	    str=(char*)cJSON_malloc(64);	// This is a nice tradeoff.

	    if (str) {
	        if (fabs(floor(d)-d)<=DBL_EPSILON) {
                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;
}
开发者ID:fieldwind，项目名称:syncsdk，代码行数:22，代码来源:cJSON.c

示例13: ensure

/* realloc printbuffer if necessary to have at least "needed" bytes more */
static char* ensure(printbuffer *p, int needed)
{
    char *newbuffer = NULL;
    int newsize = 0;
    if (!p || !p->buffer)
    {
        return NULL;
    }
    needed += p->offset;
    if (needed <= p->length)
    {
        return p->buffer + p->offset;
    }

    if (p->noalloc) {
        return NULL;
    }

    newsize = pow2gt(needed);
    newbuffer = (char*)cJSON_malloc(newsize);
    if (!newbuffer)
    {
        cJSON_free(p->buffer);
        p->length = 0;
        p->buffer = NULL;

        return NULL;
    }
    if (newbuffer)
    {
        memcpy(newbuffer, p->buffer, p->length);
    }
    cJSON_free(p->buffer);
    p->length = newsize;
    p->buffer = newbuffer;

    return newbuffer + p->offset;
}
开发者ID:FSMaxB，项目名称:cJSON，代码行数:39，代码来源:cJSON.c

示例14: parse_string

static const char *ICACHE_FLASH_ATTR
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;    /* not a string! */
        return 0;
    }

    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);
//.........这里部分代码省略.........
开发者ID:Slyer74，项目名称:esp-ginx，代码行数:101，代码来源:cJson.c

示例15: 

/* Internal constructor. */
static cJSON *cJSON_New_Item()
{
	cJSON* node = (cJSON*)cJSON_malloc(sizeof(cJSON));
	if (node) memset(node,0,sizeof(cJSON));
	return node;
}
开发者ID:alterto，项目名称:watersystem，代码行数:7，代码来源:cJSON.c


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