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reformatting: print_array

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This commit is contained in:
Max Bruckner 2016-09-28 22:07:47 +07:00
parent ad711e6fab
commit 782770c6ba
1 changed files with 160 additions and 74 deletions
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234
cJSON.c
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@ -1045,83 +1045,169 @@ static const char *parse_array(cJSON *item,const char *value,const char **ep)
}
/* Render an array to text */
static char *print_array(cJSON *item,int depth,int fmt,printbuffer *p)
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;
}
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;
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;
/* How many entries in the array? */
while (child)
{
numentries++;
child = child->next;
}
/* 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;
/* 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. */