/*************************************************************************/
/* file_access_pack.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "file_access_pack.h"
#include "version.h"
#include <stdio.h>
#define PACK_VERSION 0
Error PackedData::add_pack(const String& p_path) {
for (int i=0; i<sources.size(); i++) {
if (sources[i]->try_open_pack(p_path)) {
return OK;
};
};
return ERR_FILE_UNRECOGNIZED;
};
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) {
bool exists = files.has(path);
PackedFile pf;
pf.pack=pkg_path;
pf.offset=ofs;
pf.size=size;
for(int i=0;i<16;i++)
pf.md5[i]=p_md5[i];
pf.src = p_src;
files[path]=pf;
if (!exists) {
//search for dir
String p = path.replace_first("res://","");
PackedDir *cd=root;
if (p.find("/")!=-1) { //in a subdir
Vector<String> ds=p.get_base_dir().split("/");
for(int j=0;j<ds.size();j++) {
if (!cd->subdirs.has(ds[j])) {
PackedDir *pd = memnew( PackedDir );
pd->name=ds[j];
pd->parent=cd;
cd->subdirs[pd->name]=pd;
cd=pd;
} else {
cd=cd->subdirs[ds[j]];
}
}
}
cd->files.insert(path.get_file());
}
}
void PackedData::add_pack_source(PackSource *p_source) {
sources.push_back(p_source);
};
PackedData *PackedData::singleton=NULL;
PackedData::PackedData() {
singleton=this;
root=memnew(PackedDir);
root->parent=NULL;
disabled=false;
add_pack_source(memnew(PackedSourcePCK));
}
//////////////////////////////////////////////////////////////////
bool PackedSourcePCK::try_open_pack(const String& p_path) {
FileAccess *f = FileAccess::open(p_path,FileAccess::READ);
if (!f)
return false;
uint32_t magic= f->get_32();
if (magic != 0x43504447) {
//maybe at he end.... self contained exe
f->seek_end();
f->seek( f->get_pos() -4 );
magic = f->get_32();
if (magic != 0x43504447) {
memdelete(f);
return false;
}
f->seek( f->get_pos() -12 );
uint64_t ds = f->get_64();
f->seek( f->get_pos() -ds-8 );
magic = f->get_32();
if (magic != 0x43504447) {
memdelete(f);
return false;
}
}
uint32_t version = f->get_32();
uint32_t ver_major = f->get_32();
uint32_t ver_minor = f->get_32();
uint32_t ver_rev = f->get_32();
ERR_EXPLAIN("Pack version newer than supported by engine: "+itos(version));
ERR_FAIL_COND_V( version > PACK_VERSION, ERR_INVALID_DATA);
ERR_EXPLAIN("Pack created with a newer version of the engine: "+itos(ver_major)+"."+itos(ver_minor)+"."+itos(ver_rev));
ERR_FAIL_COND_V( ver_major > VERSION_MAJOR || (ver_major == VERSION_MAJOR && ver_minor > VERSION_MINOR), ERR_INVALID_DATA);
for(int i=0;i<16;i++) {
//reserved
f->get_32();
}
int file_count = f->get_32();
for(int i=0;i<file_count;i++) {
uint32_t sl = f->get_32();
CharString cs;
cs.resize(sl+1);
f->get_buffer((uint8_t*)cs.ptr(),sl);
cs[sl]=0;
String path;
path.parse_utf8(cs.ptr());
uint64_t ofs = f->get_64();
uint64_t size = f->get_64();
uint8_t md5[16];
f->get_buffer(md5,16);
PackedData::get_singleton()->add_path(p_path, path, ofs, size, md5,this);
};
return true;
};
FileAccess* PackedSourcePCK::get_file(const String &p_path, PackedData::PackedFile* p_file) {
return memnew( FileAccessPack(p_path, *p_file));
};
//////////////////////////////////////////////////////////////////
Error FileAccessPack::_open(const String& p_path, int p_mode_flags) {
ERR_FAIL_V(ERR_UNAVAILABLE);
return ERR_UNAVAILABLE;
}
void FileAccessPack::close() {
f->close();
}
bool FileAccessPack::is_open() const{
return f->is_open();
}
void FileAccessPack::seek(size_t p_position){
if (p_position>pf.size) {
eof=true;
} else {
eof=false;
}
f->seek(pf.offset+p_position);
}
void FileAccessPack::seek_end(int64_t p_position){
seek(pf.size+p_position);
}
size_t FileAccessPack::get_pos() const {
return pos;
}
size_t FileAccessPack::get_len() const{
return pf.size;
}
bool FileAccessPack::eof_reached() const{
return eof;
}
uint8_t FileAccessPack::get_8() const {
if (pos>=pf.size) {
eof=true;
return 0;
}
pos++;
return f->get_8();
}
int FileAccessPack::get_buffer(uint8_t *p_dst,int p_length) const {
if (eof)
return 0;
int64_t to_read=p_length;
if (to_read+pos > pf.size) {
eof=true;
to_read=int64_t(pf.size)-int64_t(pos);
}
pos+=p_length;
if (to_read<=0)
return 0;
f->get_buffer(p_dst,to_read);
return to_read;
}
void FileAccessPack::set_endian_swap(bool p_swap) {
FileAccess::set_endian_swap(p_swap);
f->set_endian_swap(p_swap);
}
Error FileAccessPack::get_error() const {
if (eof)
return ERR_FILE_EOF;
return OK;
}
void FileAccessPack::store_8(uint8_t p_dest) {
ERR_FAIL();
}
void FileAccessPack::store_buffer(const uint8_t *p_src,int p_length) {
ERR_FAIL();
}
bool FileAccessPack::file_exists(const String& p_name) {
return false;
}
FileAccessPack::FileAccessPack(const String& p_path, const PackedData::PackedFile& p_file) {
pf=p_file;
f=FileAccess::open(pf.pack,FileAccess::READ);
if (!f) {
ERR_EXPLAIN("Can't open pack-referenced file: "+String(pf.pack));
ERR_FAIL_COND(!f);
}
f->seek(pf.offset);
pos=0;
eof=false;
}
FileAccessPack::~FileAccessPack() {
if (f)
memdelete(f);
}
//////////////////////////////////////////////////////////////////////////////////
// DIR ACCESS
//////////////////////////////////////////////////////////////////////////////////
bool DirAccessPack::list_dir_begin() {
list_dirs.clear();
list_files.clear();
for (Map<String,PackedData::PackedDir*>::Element *E=current->subdirs.front();E;E=E->next()) {
list_dirs.push_back(E->key());
}
for (Set<String>::Element *E=current->files.front();E;E=E->next()) {
list_files.push_back(E->get());
}
return true;
}
String DirAccessPack::get_next(){
if (list_dirs.size()) {
cdir=true;
String d = list_dirs.front()->get();
list_dirs.pop_front();
return d;
} else if (list_files.size()) {
cdir=false;
String f = list_files.front()->get();
list_files.pop_front();
return f;
} else {
return String();
}
}
bool DirAccessPack::current_is_dir() const{
return cdir;
}
void DirAccessPack::list_dir_end() {
list_dirs.clear();
list_files.clear();
}
int DirAccessPack::get_drive_count() {
return 0;
}
String DirAccessPack::get_drive(int p_drive) {
return "";
}
Error DirAccessPack::change_dir(String p_dir) {
String nd = p_dir.replace("\\","/");
bool absolute=false;
if (nd.begins_with("res://")) {
nd=nd.replace_first("res://","");
absolute=true;
}
nd=nd.simplify_path();
if (nd.begins_with("/")) {
nd=nd.replace_first("/","") ;
absolute=true;
}
Vector<String> paths = nd.split("/");
PackedData::PackedDir *pd;
if (absolute)
pd = PackedData::get_singleton()->root;
else
pd = current;
for(int i=0;i<paths.size();i++) {
String p = paths[i];
if (p==".") {
continue;
} else if (p=="..") {
if (pd->parent) {
pd=pd->parent;
}
} else if (pd->subdirs.has(p)) {
pd=pd->subdirs[p];
} else {
return ERR_INVALID_PARAMETER;
}
}
current=pd;
return OK;
}
String DirAccessPack::get_current_dir() {
String p;
PackedData::PackedDir *pd = current;
while(pd->parent) {
if (pd!=current)
p="/"+p;
p=p+pd->name;
}
return "res://"+p;
}
bool DirAccessPack::file_exists(String p_file){
return current->files.has(p_file);
}
Error DirAccessPack::make_dir(String p_dir){
return ERR_UNAVAILABLE;
}
Error DirAccessPack::rename(String p_from, String p_to){
return ERR_UNAVAILABLE;
}
Error DirAccessPack::remove(String p_name){
return ERR_UNAVAILABLE;
}
size_t DirAccessPack::get_space_left(){
return 0;
}
DirAccessPack::DirAccessPack() {
current=PackedData::get_singleton()->root;
cdir=false;
}
DirAccessPack::~DirAccessPack() {
}