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C++ cJSON_malloc函数代码示例

原作者: [db:作者] 来自: [db:来源] 收藏 邀请

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20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，您的评价将有助于我们的系统推荐出更棒的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


示例16: while

/* 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++=',';
//.........这里部分代码省略.........
开发者ID:duhaifeng，项目名称:c_learn，代码行数:101，代码来源:cjson.c


示例17: ensure

/* 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;
}
开发者ID:ideasiii，项目名称:ControllerPlatform，代码行数:99，代码来源:cJSON.cpp


示例18: while

static char *print_array(cJSON *item)
{
	char **entries;
	char *out = 0;
	char *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)
	{
		out = (char*) cJSON_malloc(3);
		if(out)
			strcpy(out, "[]");
		return out;
	}

	/* 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, 1, 1, 0);
		entries[i++] = ret;
		if(ret)
			len += strlen(ret) + 2 + (1 ? 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++ = ',';
			*ptr++ = ' ';
			*ptr = 0;
		}
		cJSON_free(entries[i]);
	}
	cJSON_free(entries);
	*ptr++ = ']';
	*ptr++ = 0;

	return out;
}
开发者ID:ideasiii，项目名称:ControllerPlatform，代码行数:80，代码来源:cJSON.cpp


示例19: while

/* Parse the input text into an unescaped cstring, and populate item. */
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 = NULL;
    char *out = NULL;
    int len = 0;
    unsigned uc = 0;
    unsigned uc2 = 0;

    /* not a string! */
    if (*str != '\"')
    {
        *ep = str;
        return NULL;
    }

    while ((*end_ptr != '\"') && *end_ptr && ++len)
    {
        if (*end_ptr++ == '\\')
        {
            if (*end_ptr == '\0')
            {
                /* prevent buffer overflow when last input character is a backslash */
                return NULL;
            }
            /* 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 NULL;
    }
    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 '\"':
                case '\\':
                case '/':
                    *ptr2++ = *ptr;
                    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 NULL;
                    }
                    /* check for invalid. */
                    if (((uc >= 0xDC00) && (uc <= 0xDFFF)) || (uc == 0))
                    {
                        *ep = str;
                        return NULL;
                    }

                    /* UTF16 surrogate pairs. */
                    if ((uc >= 0xD800) && (uc<=0xDBFF))
                    {
                        if ((ptr + 6) > end_ptr)
                        {
                            /* invalid */
                            *ep = str;
//.........这里部分代码省略.........
开发者ID:FSMaxB，项目名称:cJSON，代码行数:101，代码来源:cJSON.c


示例20: while

/* Render an object to text. */
static char *print_object(cJSON *item,int depth,int fmt)
{
	char **entries=0,**names=0;
	char *out=0,*ptr,*ret,*str;
	int len=1024,i=0,j;
	int  num_size = 0;
	cJSON *child=item->child;
	int numentries=0,fail=0;

	//return 0;
	/* Count the number of entries. */
	while (child) 
	{
		numentries++;
		child=child->next;
	}

	/* Explicitly handle empty object case */
	if (!numentries)
	{		

		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;
		
	}
	
	num_size = numentries*sizeof(char*);

	/* Allocate space for the names and the objects */
	entries=(char**)cJSON_malloc(num_size);
	if (!entries) return 0;

	names=(char**)cJSON_malloc(num_size);
	if (!names) 
	{
		cJSON_free(entries);
		return 0;
	}
	
	//debug code 
	//if(depth >1 )
	//{
		//_hx_printf("entries=%X,names=%X",entries,names);
		//return 0;
	//}
	
	//mymemset(entries,0,num_size);
	//mymemset(names,0,num_size);
	//return 0;
	
	
	/* 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);
		//debug code 
		//_hx_printf("numentries=%d,i=%d,fmt=%d,depth=%d,type=%d",numentries,i,fmt,depth,(child->type)&255);
		entries[i]    = ret = print_value(child,depth,fmt);
		i++;

		if (str && ret) 
		{
			len += mystrlen(ret)+mystrlen(str)+2+(fmt?2+depth:0); 
		}
		else 
		{
			fail=1;
		}

		child=child->next;
		
	}
	
	//return 0;
	
	/* Try to allocate the output string */
	if (!fail) out=(char*)cJSON_malloc(len);
	if (!out) fail=1;

	/* Handle failure */
	if (fail)
	{
//.........这里部分代码省略.........
开发者ID:AlexShiLucky，项目名称:HelloX_OS，代码行数:101，代码来源:cJSON.c



注：本文中的cJSON_malloc函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。

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