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#include "fitz-base.h"
#include "fitz-stream.h"
void fz_droparray(fz_obj *obj);
fz_error *
fz_newarray(fz_obj **op, int initialcap)
{
fz_obj *obj;
int i;
obj = *op = fz_malloc(sizeof (fz_obj));
if (!obj) return fz_outofmem;
obj->refs = 1;
obj->kind = FZ_ARRAY;
obj->u.a.len = 0;
obj->u.a.cap = initialcap > 0 ? initialcap : 6;
obj->u.a.items = fz_malloc(sizeof (fz_obj*) * obj->u.a.cap);
if (!obj->u.a.items) { fz_free(obj); return fz_outofmem; }
for (i = 0; i < obj->u.a.cap; i++)
obj->u.a.items[i] = nil;
return nil;
}
fz_error *
fz_copyarray(fz_obj **op, fz_obj *obj)
{
fz_error *error;
fz_obj *new;
int i;
if (!fz_isarray(obj))
return fz_throw("typecheck in copyarray");
error = fz_newarray(&new, fz_arraylen(obj));
if (error) return error;
*op = new;
for (i = 0; i < fz_arraylen(obj); i++) {
error = fz_arraypush(new, fz_arrayget(obj, i));
if (error) { fz_droparray(new); return error; }
}
return nil;
}
fz_error *
fz_deepcopyarray(fz_obj **op, fz_obj *obj)
{
fz_error *error;
fz_obj *new;
fz_obj *val;
int i;
if (!fz_isarray(obj))
return fz_throw("typecheck in deepcopyarray");
error = fz_newarray(&new, fz_arraylen(obj));
if (error) return error;
*op = new;
for (i = 0; i < fz_arraylen(obj); i++)
{
val = fz_arrayget(obj, i);
if (fz_isarray(val)) {
error = fz_deepcopyarray(&val, val);
if (error) { fz_droparray(new); return error; }
error = fz_arraypush(new, val);
if (error) { fz_dropobj(val); fz_droparray(new); return error; }
fz_dropobj(val);
}
else if (fz_isdict(val)) {
error = fz_deepcopydict(&val, val);
if (error) { fz_droparray(new); return error; }
error = fz_arraypush(new, val);
if (error) { fz_dropobj(val); fz_droparray(new); return error; }
fz_dropobj(val);
}
else {
error = fz_arraypush(new, val);
if (error) { fz_droparray(new); return error; }
}
}
return nil;
}
int
fz_arraylen(fz_obj *obj)
{
if (!fz_isarray(obj))
return 0;
return obj->u.a.len;
}
fz_obj *
fz_arrayget(fz_obj *obj, int i)
{
if (!fz_isarray(obj))
return nil;
if (i < 0 || i >= obj->u.a.len)
return nil;
return obj->u.a.items[i];
}
fz_error *
fz_arrayput(fz_obj *obj, int i, fz_obj *item)
{
if (!fz_isarray(obj))
return fz_throw("typecheck in arrayput");
if (i < 0)
return fz_throw("rangecheck in arrayput: %d < 0", i);
if (i >= obj->u.a.len)
return fz_throw("rangecheck in arrayput: %d > %d", i, obj->u.a.len);
if (obj->u.a.items[i])
fz_dropobj(obj->u.a.items[i]);
obj->u.a.items[i] = fz_keepobj(item);
return nil;
}
static fz_error *
growarray(fz_obj *obj)
{
fz_obj **newitems;
int newcap;
int i;
newcap = obj->u.a.cap * 2;
newitems = fz_realloc(obj->u.a.items, sizeof (fz_obj*) * newcap);
if (!newitems) return fz_outofmem;
obj->u.a.items = newitems;
for (i = obj->u.a.cap ; i < newcap; i++)
obj->u.a.items[i] = nil;
obj->u.a.cap = newcap;
return nil;
}
fz_error *
fz_arraypush(fz_obj *obj, fz_obj *item)
{
fz_error *error;
if (!fz_isarray(obj))
return fz_throw("typecheck in arraypush");
if (obj->u.a.len + 1 > obj->u.a.cap) {
error = growarray(obj);
if (error) return error;
}
obj->u.a.items[obj->u.a.len] = fz_keepobj(item);
obj->u.a.len++;
return nil;
}
void
fz_droparray(fz_obj *obj)
{
int i;
assert(obj->kind == FZ_ARRAY);
for (i = 0; i < obj->u.a.len; i++)
if (obj->u.a.items[i])
fz_dropobj(obj->u.a.items[i]);
fz_free(obj->u.a.items);
fz_free(obj);
}
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