mirror of
https://github.com/godotengine/godot.git
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453 lines
11 KiB
C++
453 lines
11 KiB
C++
/*************************************************************************/
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/* packed_data_container.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* http://www.godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2016 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "packed_data_container.h"
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#include "io/marshalls.h"
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#include "core_string_names.h"
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Variant PackedDataContainer::getvar(const Variant& p_key, bool *r_valid) const {
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bool err=false;
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Variant ret = _key_at_ofs(0,p_key,err);
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if (r_valid)
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*r_valid=!err;
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return ret;
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}
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int PackedDataContainer::size() const {
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return _size(0);
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};
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Variant PackedDataContainer::_iter_init_ofs(const Array& p_iter,uint32_t p_offset) {
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Array ref=p_iter;
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uint32_t size = _size(p_offset);
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if (size==0 || ref.size()!=1)
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return false;
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else {
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ref[0]=0;
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return true;
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}
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}
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Variant PackedDataContainer::_iter_next_ofs(const Array& p_iter,uint32_t p_offset){
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Array ref=p_iter;
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uint32_t size = _size(p_offset);
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if (ref.size()!=1)
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return false;
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int pos = ref[0];
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if (pos<0 || pos>=size)
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return false;
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pos+=1;
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ref[0]=pos;
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return pos!=size;
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}
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Variant PackedDataContainer::_iter_get_ofs(const Variant& p_iter,uint32_t p_offset){
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uint32_t size = _size(p_offset);
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int pos=p_iter;
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if (pos<0 || pos>=size)
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return Variant();
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DVector<uint8_t>::Read rd=data.read();
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const uint8_t *r=&rd[p_offset];
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uint32_t type = decode_uint32(r);
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bool err=false;
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if (type==TYPE_ARRAY) {
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uint32_t vpos = decode_uint32(rd.ptr() + p_offset+8+pos*4);
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return _get_at_ofs(vpos,rd.ptr(),err);
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} else if (type==TYPE_DICT) {
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uint32_t vpos = decode_uint32(rd.ptr() + p_offset+8+pos*12+4);
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return _get_at_ofs(vpos,rd.ptr(),err);
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} else {
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ERR_FAIL_V(Variant());
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}
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}
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Variant PackedDataContainer::_get_at_ofs(uint32_t p_ofs,const uint8_t *p_buf,bool &err) const {
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uint32_t type = decode_uint32(p_buf + p_ofs);
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if (type==TYPE_ARRAY || type==TYPE_DICT) {
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Ref<PackedDataContainerRef> pdcr = memnew( PackedDataContainerRef );
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Ref<PackedDataContainer> pdc = Ref<PackedDataContainer>((PackedDataContainer*)this);
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pdcr->from=pdc;
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pdcr->offset=p_ofs;
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return pdcr;
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} else {
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Variant v;
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Error rerr = decode_variant(v,p_buf + p_ofs,datalen-p_ofs,NULL);
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if (rerr!=OK) {
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err=true;
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ERR_FAIL_COND_V(err!=OK,Variant());
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}
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return v;
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}
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}
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uint32_t PackedDataContainer::_type_at_ofs(uint32_t p_ofs) const {
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DVector<uint8_t>::Read rd=data.read();
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const uint8_t *r=&rd[p_ofs];
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uint32_t type = decode_uint32(r);
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return type;
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};
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int PackedDataContainer::_size(uint32_t p_ofs) const {
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DVector<uint8_t>::Read rd=data.read();
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const uint8_t *r=&rd[p_ofs];
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uint32_t type = decode_uint32(r);
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if (type==TYPE_ARRAY) {
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uint32_t len = decode_uint32(r+4);
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return len;
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} else if (type==TYPE_DICT) {
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uint32_t len = decode_uint32(r+4);
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return len;
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};
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return -1;
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};
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Variant PackedDataContainer::_key_at_ofs(uint32_t p_ofs,const Variant& p_key,bool &err) const {
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DVector<uint8_t>::Read rd=data.read();
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const uint8_t *r=&rd[p_ofs];
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uint32_t type = decode_uint32(r);
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if (type==TYPE_ARRAY) {
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if (p_key.is_num()) {
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int idx=p_key;
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uint32_t len = decode_uint32(r+4);
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if (idx<0 || idx>=len) {
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err=true;
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return Variant();
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}
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uint32_t ofs = decode_uint32(r+8+4*idx);
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return _get_at_ofs(ofs,rd.ptr(),err);
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} else {
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err=true;
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return Variant();
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}
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} else if (type==TYPE_DICT) {
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uint32_t hash=p_key.hash();
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uint32_t len = decode_uint32(r+4);
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bool found=false;
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for(int i=0;i<len;i++) {
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uint32_t khash=decode_uint32(r+8+i*12+0);
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if (khash==hash) {
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Variant key = _get_at_ofs(decode_uint32(r+8+i*12+4),rd.ptr(),err);
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if (err)
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return Variant();
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if (key==p_key) {
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//key matches, return value
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return _get_at_ofs(decode_uint32(r+8+i*12+8),rd.ptr(),err);
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}
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found=true;
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} else {
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if (found)
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break;
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}
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}
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err=true;
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return Variant();
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} else {
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err=true;
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return Variant();
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}
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}
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uint32_t PackedDataContainer::_pack(const Variant& p_data, Vector<uint8_t>& tmpdata, Map<String,uint32_t>& string_cache) {
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switch(p_data.get_type()) {
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case Variant::STRING: {
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String s = p_data;
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if (string_cache.has(s)) {
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return string_cache[s];
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}
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string_cache[s]=tmpdata.size();
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}; //fallthrough
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case Variant::NIL:
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case Variant::BOOL:
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case Variant::INT:
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case Variant::REAL:
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case Variant::VECTOR2:
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case Variant::RECT2:
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case Variant::VECTOR3:
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case Variant::MATRIX32:
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case Variant::PLANE:
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case Variant::QUAT:
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case Variant::_AABB:
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case Variant::MATRIX3:
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case Variant::TRANSFORM:
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case Variant::IMAGE:
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case Variant::INPUT_EVENT:
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case Variant::RAW_ARRAY:
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case Variant::INT_ARRAY:
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case Variant::REAL_ARRAY:
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case Variant::STRING_ARRAY:
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case Variant::VECTOR2_ARRAY:
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case Variant::VECTOR3_ARRAY:
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case Variant::COLOR_ARRAY:
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case Variant::NODE_PATH: {
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uint32_t pos = tmpdata.size();
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int len;
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encode_variant(p_data,NULL,len);
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tmpdata.resize(tmpdata.size()+len);
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encode_variant(p_data,&tmpdata[pos],len);
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return pos;
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} break;
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// misc types
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case Variant::_RID:
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case Variant::OBJECT: {
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return _pack(Variant(),tmpdata,string_cache);
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} break;
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case Variant::DICTIONARY: {
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Dictionary d=p_data;
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//size is known, use sort
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uint32_t pos = tmpdata.size();
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int len=d.size();
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tmpdata.resize(tmpdata.size()+len*12+8);
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encode_uint32(TYPE_DICT,&tmpdata[pos+0]);
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encode_uint32(len,&tmpdata[pos+4]);
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List<Variant> keys;
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d.get_key_list(&keys);
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List<DictKey> sortk;
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for(List<Variant>::Element *E=keys.front();E;E=E->next()) {
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DictKey dk;
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dk.hash=E->get().hash();
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dk.key=E->get();
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sortk.push_back(dk);
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}
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sortk.sort();
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int idx=0;
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for(List<DictKey>::Element *E=sortk.front();E;E=E->next()) {
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encode_uint32(E->get().hash,&tmpdata[pos+8+idx*12+0]);
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uint32_t ofs = _pack(E->get().key,tmpdata,string_cache);
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encode_uint32(ofs,&tmpdata[pos+8+idx*12+4]);
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ofs = _pack(d[E->get().key],tmpdata,string_cache);
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encode_uint32(ofs,&tmpdata[pos+8+idx*12+8]);
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idx++;
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}
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return pos;
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} break;
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case Variant::ARRAY: {
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Array a=p_data;
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//size is known, use sort
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uint32_t pos = tmpdata.size();
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int len=a.size();
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tmpdata.resize(tmpdata.size()+len*4+8);
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encode_uint32(TYPE_ARRAY,&tmpdata[pos+0]);
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encode_uint32(len,&tmpdata[pos+4]);
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for(int i=0;i<len;i++) {
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uint32_t ofs = _pack(a[i],tmpdata,string_cache);
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encode_uint32(ofs,&tmpdata[pos+8+i*4]);
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}
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return pos;
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} break;
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default: {}
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}
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return OK;
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}
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Error PackedDataContainer::pack(const Variant& p_data) {
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Vector<uint8_t> tmpdata;
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Map<String,uint32_t> string_cache;
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_pack(p_data,tmpdata,string_cache);
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datalen=tmpdata.size();
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data.resize(tmpdata.size());
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DVector<uint8_t>::Write w = data.write();
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copymem(w.ptr(),tmpdata.ptr(),tmpdata.size());
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return OK;
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}
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void PackedDataContainer::_set_data(const DVector<uint8_t>& p_data) {
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data=p_data;
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datalen=data.size();
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}
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DVector<uint8_t> PackedDataContainer::_get_data() const {
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return data;
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}
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Variant PackedDataContainer::_iter_init(const Array& p_iter) {
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return _iter_init_ofs(p_iter,0);
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}
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Variant PackedDataContainer::_iter_next(const Array& p_iter){
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return _iter_next_ofs(p_iter,0);
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}
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Variant PackedDataContainer::_iter_get(const Variant& p_iter){
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return _iter_get_ofs(p_iter,0);
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}
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void PackedDataContainer::_bind_methods() {
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ObjectTypeDB::bind_method(_MD("_set_data"),&PackedDataContainer::_set_data);
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ObjectTypeDB::bind_method(_MD("_get_data"),&PackedDataContainer::_get_data);
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ObjectTypeDB::bind_method(_MD("_iter_init"),&PackedDataContainer::_iter_init);
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ObjectTypeDB::bind_method(_MD("_iter_get"),&PackedDataContainer::_iter_get);
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ObjectTypeDB::bind_method(_MD("_iter_next"),&PackedDataContainer::_iter_next);
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ObjectTypeDB::bind_method(_MD("pack:Error","value"),&PackedDataContainer::pack);
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ObjectTypeDB::bind_method(_MD("size"),&PackedDataContainer::size);
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ADD_PROPERTY( PropertyInfo(Variant::RAW_ARRAY,"__data__"),_SCS("_set_data"),_SCS("_get_data"));
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}
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PackedDataContainer::PackedDataContainer() {
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datalen=0;
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}
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//////////////////
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Variant PackedDataContainerRef::_iter_init(const Array& p_iter) {
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return from->_iter_init_ofs(p_iter,offset);
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}
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Variant PackedDataContainerRef::_iter_next(const Array& p_iter){
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return from->_iter_next_ofs(p_iter,offset);
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}
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Variant PackedDataContainerRef::_iter_get(const Variant& p_iter){
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return from->_iter_get_ofs(p_iter,offset);
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}
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bool PackedDataContainerRef::_is_dictionary() const {
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return from->_type_at_ofs(offset) == PackedDataContainer::TYPE_DICT;
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};
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void PackedDataContainerRef::_bind_methods() {
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ObjectTypeDB::bind_method(_MD("size"),&PackedDataContainerRef::size);
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ObjectTypeDB::bind_method(_MD("_iter_init"),&PackedDataContainerRef::_iter_init);
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ObjectTypeDB::bind_method(_MD("_iter_get"),&PackedDataContainerRef::_iter_get);
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ObjectTypeDB::bind_method(_MD("_iter_next"),&PackedDataContainerRef::_iter_next);
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ObjectTypeDB::bind_method(_MD("_is_dictionary"),&PackedDataContainerRef::_is_dictionary);
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}
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Variant PackedDataContainerRef::getvar(const Variant& p_key, bool *r_valid) const {
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bool err=false;
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Variant ret = from->_key_at_ofs(offset,p_key,err);
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if (r_valid)
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*r_valid=!err;
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return ret;
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}
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int PackedDataContainerRef::size() const {
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return from->_size(offset);
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};
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PackedDataContainerRef::PackedDataContainerRef() {
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}
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