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reformatting: print_object

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This commit is contained in:
Max Bruckner 2016-09-30 09:29:03 +07:00
parent 25632fad13
commit 31e53a1297
1 changed files with 268 additions and 104 deletions
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250
cJSON.c
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@ -1308,111 +1308,275 @@ static const char *parse_object(cJSON *item, const char *value, const char **ep)
/* 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;
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,fail=0;
int numentries = 0;
int fail = 0;
size_t tmplen = 0;
/* Count the number of entries. */
while (child) numentries++,child=child->next;
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;
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++;
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';
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';
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;
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;
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;
if (!entries)
{
return 0;
}
names = (char**)cJSON_malloc(numentries * sizeof(char*));
if (!names) {cJSON_free(entries);return 0;}
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;
child = item->child;
depth++;
if (fmt)
{
len += depth;
}
while (child && !fail)
{
names[i]=str=print_string_ptr(child->string,0);
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;
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;
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);
/* 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;
*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]);
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;
cJSON_free(names);
cJSON_free(entries);
if (fmt)
{
for (i = 0; i < (depth - 1); i++)
{
*ptr++ = '\t';
}
}
*ptr++ = '}';
*ptr++ = '\0';
}
return out;
}