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#include "fitz.h"
fz_obj *
fz_new_array(int initialcap)
{
fz_obj *obj;
int i;
obj = fz_malloc(sizeof(fz_obj));
obj->refs = 1;
obj->kind = FZ_ARRAY;
obj->u.a.len = 0;
obj->u.a.cap = initialcap > 1 ? initialcap : 6;
obj->u.a.items = fz_calloc(obj->u.a.cap, sizeof(fz_obj*));
for (i = 0; i < obj->u.a.cap; i++)
obj->u.a.items[i] = NULL;
return obj;
}
fz_obj *
fz_copy_array(fz_obj *obj)
{
fz_obj *new;
int i;
if (fz_is_indirect(obj) || !fz_is_array(obj))
fz_warn("assert: not an array (%s)", fz_objkindstr(obj));
new = fz_new_array(fz_array_len(obj));
for (i = 0; i < fz_array_len(obj); i++)
fz_array_push(new, fz_array_get(obj, i));
return new;
}
int
fz_array_len(fz_obj *obj)
{
obj = fz_resolve_indirect(obj);
if (!fz_is_array(obj))
return 0;
return obj->u.a.len;
}
fz_obj *
fz_array_get(fz_obj *obj, int i)
{
obj = fz_resolve_indirect(obj);
if (!fz_is_array(obj))
return NULL;
if (i < 0 || i >= obj->u.a.len)
return NULL;
return obj->u.a.items[i];
}
void
fz_array_put(fz_obj *obj, int i, fz_obj *item)
{
obj = fz_resolve_indirect(obj);
if (!fz_is_array(obj))
fz_warn("assert: not an array (%s)", fz_objkindstr(obj));
else if (i < 0)
fz_warn("assert: index %d < 0", i);
else if (i >= obj->u.a.len)
fz_warn("assert: index %d > length %d", i, obj->u.a.len);
else
{
if (obj->u.a.items[i])
fz_drop_obj(obj->u.a.items[i]);
obj->u.a.items[i] = fz_keep_obj(item);
}
}
void
fz_array_push(fz_obj *obj, fz_obj *item)
{
obj = fz_resolve_indirect(obj);
if (!fz_is_array(obj))
fz_warn("assert: not an array (%s)", fz_objkindstr(obj));
else
{
if (obj->u.a.len + 1 > obj->u.a.cap)
{
int i;
obj->u.a.cap = (obj->u.a.cap * 3) / 2;
obj->u.a.items = fz_realloc(obj->u.a.items, obj->u.a.cap, sizeof(fz_obj*));
for (i = obj->u.a.len ; i < obj->u.a.cap; i++)
obj->u.a.items[i] = NULL;
}
obj->u.a.items[obj->u.a.len] = fz_keep_obj(item);
obj->u.a.len++;
}
}
void
fz_array_drop(fz_obj *obj)
{
obj = fz_resolve_indirect(obj);
if (!fz_is_array(obj))
fz_warn("assert: not an array (%s)", fz_objkindstr(obj));
else
{
if (obj->u.a.len > 0)
{
fz_drop_obj(obj->u.a.items[--obj->u.a.len]);
}
}
}
void
fz_array_insert(fz_obj *obj, fz_obj *item)
{
obj = fz_resolve_indirect(obj);
if (!fz_is_array(obj))
fz_warn("assert: not an array (%s)", fz_objkindstr(obj));
else
{
if (obj->u.a.len + 1 > obj->u.a.cap)
{
int i;
obj->u.a.cap = (obj->u.a.cap * 3) / 2;
obj->u.a.items = fz_realloc(obj->u.a.items, obj->u.a.cap, sizeof(fz_obj*));
for (i = obj->u.a.len ; i < obj->u.a.cap; i++)
obj->u.a.items[i] = NULL;
}
memmove(obj->u.a.items + 1, obj->u.a.items, obj->u.a.len * sizeof(fz_obj*));
obj->u.a.items[0] = fz_keep_obj(item);
obj->u.a.len++;
}
}
void
fz_free_array(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_drop_obj(obj->u.a.items[i]);
fz_free(obj->u.a.items);
fz_free(obj);
}
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