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#include "common/common.h"
#include "node.h"
// Init a node with the given format. If parent is not NULL, it is set as
// parent allocation according to m_option_type_node rules (which means
// the mpv_node_list allocs are used for chaining the TA allocations).
// format == MPV_FORMAT_NONE will simply initialize it with all-0.
void node_init(struct mpv_node *dst, int format, struct mpv_node *parent)
{
// Other formats need to be initialized manually.
assert(format == MPV_FORMAT_NODE_MAP || format == MPV_FORMAT_NODE_ARRAY ||
format == MPV_FORMAT_FLAG || format == MPV_FORMAT_INT64 ||
format == MPV_FORMAT_DOUBLE || format == MPV_FORMAT_BYTE_ARRAY ||
format == MPV_FORMAT_NONE);
void *ta_parent = NULL;
if (parent) {
assert(parent->format == MPV_FORMAT_NODE_MAP ||
parent->format == MPV_FORMAT_NODE_ARRAY);
ta_parent = parent->u.list;
}
*dst = (struct mpv_node){ .format = format };
if (format == MPV_FORMAT_NODE_MAP || format == MPV_FORMAT_NODE_ARRAY)
dst->u.list = talloc_zero(ta_parent, struct mpv_node_list);
if (format == MPV_FORMAT_BYTE_ARRAY)
dst->u.ba = talloc_zero(ta_parent, struct mpv_byte_array);
}
// Add an entry to a MPV_FORMAT_NODE_ARRAY.
// m_option_type_node memory management rules apply.
struct mpv_node *node_array_add(struct mpv_node *dst, int format)
{
struct mpv_node_list *list = dst->u.list;
assert(dst->format == MPV_FORMAT_NODE_ARRAY && dst->u.list);
MP_TARRAY_GROW(list, list->values, list->num);
node_init(&list->values[list->num], format, dst);
return &list->values[list->num++];
}
// Add an entry to a MPV_FORMAT_NODE_MAP. Keep in mind that this does
// not check for already existing entries under the same key.
// m_option_type_node memory management rules apply.
struct mpv_node *node_map_add(struct mpv_node *dst, const char *key, int format)
{
assert(key);
return node_map_badd(dst, bstr0(key), format);
}
struct mpv_node *node_map_badd(struct mpv_node *dst, struct bstr key, int format)
{
assert(key.start);
struct mpv_node_list *list = dst->u.list;
assert(dst->format == MPV_FORMAT_NODE_MAP && dst->u.list);
MP_TARRAY_GROW(list, list->values, list->num);
MP_TARRAY_GROW(list, list->keys, list->num);
list->keys[list->num] = bstrdup0(list, key);
node_init(&list->values[list->num], format, dst);
return &list->values[list->num++];
}
// Add a string entry to a MPV_FORMAT_NODE_MAP. Keep in mind that this does
// not check for already existing entries under the same key.
// m_option_type_node memory management rules apply.
void node_map_add_string(struct mpv_node *dst, const char *key, const char *val)
{
assert(val);
struct mpv_node *entry = node_map_add(dst, key, MPV_FORMAT_NONE);
entry->format = MPV_FORMAT_STRING;
entry->u.string = talloc_strdup(dst->u.list, val);
}
void node_map_add_int64(struct mpv_node *dst, const char *key, int64_t v)
{
node_map_add(dst, key, MPV_FORMAT_INT64)->u.int64 = v;
}
void node_map_add_double(struct mpv_node *dst, const char *key, double v)
{
node_map_add(dst, key, MPV_FORMAT_DOUBLE)->u.double_ = v;
}
void node_map_add_flag(struct mpv_node *dst, const char *key, bool v)
{
node_map_add(dst, key, MPV_FORMAT_FLAG)->u.flag = v;
}
mpv_node *node_map_get(mpv_node *src, const char *key)
{
return node_map_bget(src, bstr0(key));
}
mpv_node *node_map_bget(mpv_node *src, struct bstr key)
{
if (src->format != MPV_FORMAT_NODE_MAP)
return NULL;
for (int i = 0; i < src->u.list->num; i++) {
if (bstr_equals0(key, src->u.list->keys[i]))
return &src->u.list->values[i];
}
return NULL;
}
// Note: for MPV_FORMAT_NODE_MAP, this (incorrectly) takes the order into
// account, instead of treating it as set.
bool equal_mpv_value(const void *a, const void *b, mpv_format format)
{
switch (format) {
case MPV_FORMAT_NONE:
return true;
case MPV_FORMAT_STRING:
case MPV_FORMAT_OSD_STRING:
return strcmp(*(char **)a, *(char **)b) == 0;
case MPV_FORMAT_FLAG:
return *(int *)a == *(int *)b;
case MPV_FORMAT_INT64:
return *(int64_t *)a == *(int64_t *)b;
case MPV_FORMAT_DOUBLE:
return *(double *)a == *(double *)b;
case MPV_FORMAT_NODE:
return equal_mpv_node(a, b);
case MPV_FORMAT_BYTE_ARRAY: {
const struct mpv_byte_array *a_r = a, *b_r = b;
if (a_r->size != b_r->size)
return false;
return memcmp(a_r->data, b_r->data, a_r->size) == 0;
}
case MPV_FORMAT_NODE_ARRAY:
case MPV_FORMAT_NODE_MAP:
{
mpv_node_list *l_a = *(mpv_node_list **)a, *l_b = *(mpv_node_list **)b;
if (l_a->num != l_b->num)
return false;
for (int n = 0; n < l_a->num; n++) {
if (format == MPV_FORMAT_NODE_MAP) {
if (strcmp(l_a->keys[n], l_b->keys[n]) != 0)
return false;
}
if (!equal_mpv_node(&l_a->values[n], &l_b->values[n]))
return false;
}
return true;
}
}
MP_ASSERT_UNREACHABLE(); // supposed to be able to handle all defined types
}
// Remarks see equal_mpv_value().
bool equal_mpv_node(const struct mpv_node *a, const struct mpv_node *b)
{
if (a->format != b->format)
return false;
return equal_mpv_value(&a->u, &b->u, a->format);
}
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