c7bc44d5ad
That year should bring the long-awaited OpenGL ES 3.0 compatible renderer with state-of-the-art rendering techniques tuned to work as low as middle end handheld devices - without compromising with the possibilities given for higher end desktop games of course. Great times ahead for the Godot community and the gamers that will play our games!
512 lines
10 KiB
C++
512 lines
10 KiB
C++
/*************************************************************************/
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/* file_access_pack.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) 2007-2017 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 "file_access_pack.h"
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#include "version.h"
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#include <stdio.h>
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#define PACK_VERSION 0
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Error PackedData::add_pack(const String& p_path) {
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for (int i=0; i<sources.size(); i++) {
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if (sources[i]->try_open_pack(p_path)) {
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return OK;
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};
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};
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return ERR_FILE_UNRECOGNIZED;
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};
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void PackedData::add_path(const String& pkg_path, const String& path, uint64_t ofs, uint64_t size,const uint8_t* p_md5, PackSource* p_src) {
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PathMD5 pmd5(path.md5_buffer());
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//printf("adding path %ls, %lli, %lli\n", path.c_str(), pmd5.a, pmd5.b);
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bool exists = files.has(pmd5);
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PackedFile pf;
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pf.pack=pkg_path;
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pf.offset=ofs;
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pf.size=size;
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for(int i=0;i<16;i++)
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pf.md5[i]=p_md5[i];
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pf.src = p_src;
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files[pmd5]=pf;
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if (!exists) {
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//search for dir
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String p = path.replace_first("res://","");
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PackedDir *cd=root;
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if (p.find("/")!=-1) { //in a subdir
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Vector<String> ds=p.get_base_dir().split("/");
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for(int j=0;j<ds.size();j++) {
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if (!cd->subdirs.has(ds[j])) {
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PackedDir *pd = memnew( PackedDir );
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pd->name=ds[j];
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pd->parent=cd;
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cd->subdirs[pd->name]=pd;
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cd=pd;
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} else {
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cd=cd->subdirs[ds[j]];
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}
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}
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}
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cd->files.insert(path.get_file());
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}
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}
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void PackedData::add_pack_source(PackSource *p_source) {
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if (p_source != NULL) {
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sources.push_back(p_source);
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}
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};
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PackedData *PackedData::singleton=NULL;
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PackedData::PackedData() {
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singleton=this;
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root=memnew(PackedDir);
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root->parent=NULL;
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disabled=false;
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add_pack_source(memnew(PackedSourcePCK));
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}
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void PackedData::_free_packed_dirs(PackedDir *p_dir) {
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for (Map<String,PackedDir*>::Element *E=p_dir->subdirs.front();E;E=E->next())
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_free_packed_dirs(E->get());
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memdelete(p_dir);
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}
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PackedData::~PackedData() {
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for(int i=0;i<sources.size();i++) {
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memdelete(sources[i]);
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}
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_free_packed_dirs(root);
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}
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//////////////////////////////////////////////////////////////////
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bool PackedSourcePCK::try_open_pack(const String& p_path) {
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FileAccess *f = FileAccess::open(p_path,FileAccess::READ);
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if (!f)
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return false;
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//printf("try open %ls!\n", p_path.c_str());
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uint32_t magic= f->get_32();
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if (magic != 0x43504447) {
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//maybe at he end.... self contained exe
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f->seek_end();
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f->seek( f->get_pos() -4 );
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magic = f->get_32();
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if (magic != 0x43504447) {
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memdelete(f);
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return false;
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}
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f->seek( f->get_pos() -12 );
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uint64_t ds = f->get_64();
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f->seek( f->get_pos() -ds-8 );
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magic = f->get_32();
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if (magic != 0x43504447) {
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memdelete(f);
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return false;
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}
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}
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uint32_t version = f->get_32();
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uint32_t ver_major = f->get_32();
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uint32_t ver_minor = f->get_32();
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uint32_t ver_rev = f->get_32();
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ERR_EXPLAIN("Pack version newer than supported by engine: "+itos(version));
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ERR_FAIL_COND_V( version > PACK_VERSION, ERR_INVALID_DATA);
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ERR_EXPLAIN("Pack created with a newer version of the engine: "+itos(ver_major)+"."+itos(ver_minor)+"."+itos(ver_rev));
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ERR_FAIL_COND_V( ver_major > VERSION_MAJOR || (ver_major == VERSION_MAJOR && ver_minor > VERSION_MINOR), ERR_INVALID_DATA);
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for(int i=0;i<16;i++) {
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//reserved
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f->get_32();
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}
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int file_count = f->get_32();
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for(int i=0;i<file_count;i++) {
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uint32_t sl = f->get_32();
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CharString cs;
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cs.resize(sl+1);
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f->get_buffer((uint8_t*)cs.ptr(),sl);
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cs[sl]=0;
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String path;
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path.parse_utf8(cs.ptr());
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uint64_t ofs = f->get_64();
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uint64_t size = f->get_64();
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uint8_t md5[16];
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f->get_buffer(md5,16);
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PackedData::get_singleton()->add_path(p_path, path, ofs, size, md5,this);
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};
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return true;
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};
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FileAccess* PackedSourcePCK::get_file(const String &p_path, PackedData::PackedFile* p_file) {
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return memnew( FileAccessPack(p_path, *p_file));
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};
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//////////////////////////////////////////////////////////////////
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Error FileAccessPack::_open(const String& p_path, int p_mode_flags) {
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ERR_FAIL_V(ERR_UNAVAILABLE);
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return ERR_UNAVAILABLE;
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}
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void FileAccessPack::close() {
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f->close();
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}
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bool FileAccessPack::is_open() const{
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return f->is_open();
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}
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void FileAccessPack::seek(size_t p_position){
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if (p_position>pf.size) {
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eof=true;
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} else {
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eof=false;
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}
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f->seek(pf.offset+p_position);
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pos=p_position;
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}
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void FileAccessPack::seek_end(int64_t p_position){
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seek(pf.size+p_position);
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}
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size_t FileAccessPack::get_pos() const {
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return pos;
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}
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size_t FileAccessPack::get_len() const{
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return pf.size;
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}
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bool FileAccessPack::eof_reached() const{
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return eof;
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}
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uint8_t FileAccessPack::get_8() const {
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if (pos>=pf.size) {
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eof=true;
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return 0;
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}
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pos++;
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return f->get_8();
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}
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int FileAccessPack::get_buffer(uint8_t *p_dst,int p_length) const {
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if (eof)
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return 0;
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int64_t to_read=p_length;
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if (to_read+pos > pf.size) {
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eof=true;
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to_read=int64_t(pf.size)-int64_t(pos);
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}
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pos+=p_length;
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if (to_read<=0)
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return 0;
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f->get_buffer(p_dst,to_read);
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return to_read;
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}
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void FileAccessPack::set_endian_swap(bool p_swap) {
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FileAccess::set_endian_swap(p_swap);
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f->set_endian_swap(p_swap);
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}
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Error FileAccessPack::get_error() const {
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if (eof)
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return ERR_FILE_EOF;
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return OK;
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}
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void FileAccessPack::store_8(uint8_t p_dest) {
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ERR_FAIL();
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}
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void FileAccessPack::store_buffer(const uint8_t *p_src,int p_length) {
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ERR_FAIL();
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}
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bool FileAccessPack::file_exists(const String& p_name) {
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return false;
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}
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FileAccessPack::FileAccessPack(const String& p_path, const PackedData::PackedFile& p_file) {
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pf=p_file;
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f=FileAccess::open(pf.pack,FileAccess::READ);
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if (!f) {
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ERR_EXPLAIN("Can't open pack-referenced file: "+String(pf.pack));
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ERR_FAIL_COND(!f);
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}
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f->seek(pf.offset);
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pos=0;
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eof=false;
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}
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FileAccessPack::~FileAccessPack() {
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if (f)
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memdelete(f);
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}
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//////////////////////////////////////////////////////////////////////////////////
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// DIR ACCESS
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//////////////////////////////////////////////////////////////////////////////////
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bool DirAccessPack::list_dir_begin() {
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list_dirs.clear();
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list_files.clear();
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for (Map<String,PackedData::PackedDir*>::Element *E=current->subdirs.front();E;E=E->next()) {
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list_dirs.push_back(E->key());
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}
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for (Set<String>::Element *E=current->files.front();E;E=E->next()) {
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list_files.push_back(E->get());
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}
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return true;
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}
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String DirAccessPack::get_next(){
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if (list_dirs.size()) {
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cdir=true;
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String d = list_dirs.front()->get();
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list_dirs.pop_front();
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return d;
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} else if (list_files.size()) {
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cdir=false;
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String f = list_files.front()->get();
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list_files.pop_front();
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return f;
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} else {
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return String();
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}
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}
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bool DirAccessPack::current_is_dir() const{
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return cdir;
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}
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bool DirAccessPack::current_is_hidden() const{
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return false;
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}
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void DirAccessPack::list_dir_end() {
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list_dirs.clear();
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list_files.clear();
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}
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int DirAccessPack::get_drive_count() {
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return 0;
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}
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String DirAccessPack::get_drive(int p_drive) {
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return "";
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}
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Error DirAccessPack::change_dir(String p_dir) {
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String nd = p_dir.replace("\\","/");
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bool absolute=false;
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if (nd.begins_with("res://")) {
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nd=nd.replace_first("res://","");
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absolute=true;
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}
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nd=nd.simplify_path();
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if (nd == "") nd = ".";
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if (nd.begins_with("/")) {
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nd=nd.replace_first("/","") ;
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absolute=true;
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}
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Vector<String> paths = nd.split("/");
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PackedData::PackedDir *pd;
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if (absolute)
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pd = PackedData::get_singleton()->root;
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else
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pd = current;
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for(int i=0;i<paths.size();i++) {
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String p = paths[i];
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if (p==".") {
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continue;
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} else if (p=="..") {
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if (pd->parent) {
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pd=pd->parent;
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}
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} else if (pd->subdirs.has(p)) {
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pd=pd->subdirs[p];
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} else {
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return ERR_INVALID_PARAMETER;
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}
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}
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current=pd;
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return OK;
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}
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String DirAccessPack::get_current_dir() {
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String p;
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PackedData::PackedDir *pd = current;
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while(pd->parent) {
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if (pd!=current)
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p="/"+p;
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p=p+pd->name;
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}
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return "res://"+p;
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}
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bool DirAccessPack::file_exists(String p_file){
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return current->files.has(p_file);
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}
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bool DirAccessPack::dir_exists(String p_dir) {
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return current->subdirs.has(p_dir);
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}
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Error DirAccessPack::make_dir(String p_dir){
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return ERR_UNAVAILABLE;
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}
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Error DirAccessPack::rename(String p_from, String p_to){
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return ERR_UNAVAILABLE;
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}
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Error DirAccessPack::remove(String p_name){
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return ERR_UNAVAILABLE;
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}
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size_t DirAccessPack::get_space_left(){
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return 0;
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}
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DirAccessPack::DirAccessPack() {
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current=PackedData::get_singleton()->root;
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cdir=false;
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}
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DirAccessPack::~DirAccessPack() {
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}
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