336 lines
10 KiB
C++
336 lines
10 KiB
C++
//---------------------------------------------------------------------------//
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#ifndef IMCRAW
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#define IMCRAW
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#include <fstream>
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// #include <filesystem>
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#include "hexshow.hpp"
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#include "imc_key.hpp"
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#include "imc_block.hpp"
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#include "imc_datatype.hpp"
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#include "imc_object.hpp"
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#include "imc_result.hpp"
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#include "imc_channel.hpp"
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//---------------------------------------------------------------------------//
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namespace imc
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{
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class raw
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{
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// (path of) raw-file and its basename
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std::string raw_file_, file_name_;
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// buffer of raw-file
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std::vector<unsigned char> buffer_;
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// list and map of imc-blocks
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std::vector<imc::block> rawblocks_;
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std::map<std::string,imc::block> mapblocks_;
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// check computational complexity for parsing blocks
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unsigned long int cplxcnt_;
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// list groups and channels with their affiliate blocks
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std::map<std::string,imc::channel_env> channel_envs_;
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public:
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// constructor
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raw() {};
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raw(std::string raw_file): raw_file_(raw_file) { set_file(raw_file); };
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// provide new raw-file
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void set_file(std::string raw_file)
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{
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raw_file_ = raw_file;
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this->fill_buffer();
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this->parse_blocks();
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this->generate_block_map();
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this->generate_channel_env();
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}
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private:
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// open file and stream data into buffer
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void fill_buffer()
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{
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// open file and put data in buffer
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try {
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std::ifstream fin(raw_file_.c_str(),std::ifstream::binary);
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if ( !fin.good() ) throw std::runtime_error("failed to open file");
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std::vector<unsigned char> buffer((std::istreambuf_iterator<char>(fin)),
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(std::istreambuf_iterator<char>()));
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buffer_ = buffer;
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fin.close();
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} catch ( const std::exception& e ) {
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throw std::runtime_error(
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std::string("failed to open raw-file and stream data in buffer: ") + e.what()
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);
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}
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}
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// parse all raw blocks in buffer
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void parse_blocks()
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{
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// reset counter to identify computational complexity
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cplxcnt_ = 0;
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// start parsing raw-blocks in buffer
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for ( std::vector<unsigned char>::iterator it=buffer_.begin();
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it!=buffer_.end(); ++it )
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{
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cplxcnt_++;
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// check for "magic byte"
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if ( *it == ch_bgn_ )
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{
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// check for (non)critical key
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if ( *(it+1) == imc::key_crit_ || *(it+1) == imc::key_non_crit_ )
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{
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// compose (entire) key
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std::string newkey = { (char)*(it+1), (char)*(it+2) };
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imc::key itkey(*(it+1) == imc::key_crit_,newkey);
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// expecting ch_sep_ after key
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if ( *(it+3) == ch_sep_ )
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{
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// extract key version
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std::string vers("");
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unsigned long int pos = 4;
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while ( *(it+pos) != ch_sep_ )
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{
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vers.push_back((char)*(it+pos));
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pos++;
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}
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int version = std::stoi(vers);
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// try to retrieve full key
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itkey.version_ = version;
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itkey = imc::get_key(itkey.critical_,itkey.name_,itkey.version_);
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// check for known keys (including version)
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if ( imc::check_key(itkey) )
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{
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// get block length
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std::string leng("");
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pos++;
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while ( *(it+pos) != ch_sep_ )
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{
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leng.push_back((char)*(it+pos));
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pos++;
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}
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unsigned long length = std::stoul(leng);
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// declare and initialize corresponding key and block
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// imc::key bkey( *(it+1)==imc::key_crit_ , newkey,
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// imc::keys.at(newkey).description_, version );
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imc::block blk(itkey,it-buffer_.begin(),
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it-buffer_.begin()+pos+1+length,
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raw_file_, &buffer_);
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// add block to list
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rawblocks_.push_back(blk);
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// skip the remaining block according to its length
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if ( it-buffer_.begin()+length < buffer_.size() )
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{
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std::advance(it,length);
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}
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}
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else
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{
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// all critical must be known !! while a noncritical may be ignored
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if ( *(it+1) == imc::key_crit_ )
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{
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throw std::runtime_error(
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std::string("unknown critical key: ") + newkey + std::to_string(version)
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);
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}
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else
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{
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std::cout<<"WARNING: unknown noncritical key '"
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<<newkey<<version<<"' will be ignored\n";
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}
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}
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}
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else
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{
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throw std::runtime_error(
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std::string("invalid block or corrupt buffer at byte: ")
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+ std::to_string(it+3-buffer_.begin())
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);
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}
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}
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}
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}
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this->check_consistency();
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}
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// check consistency of blocks
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void check_consistency()
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{
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for ( unsigned long int b = 0; b < this->rawblocks_.size()-1; b++ )
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{
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if ( this->rawblocks_[b].get_end() >= this->rawblocks_[b+1].get_begin() )
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{
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throw std::runtime_error(
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std::string("inconsistent subsequent blocks:\n")
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+ std::to_string(b) + std::string("-th block:\n") + this->rawblocks_[b].get_info()
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+ std::string("\n")
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+ std::to_string(b+1) + std::string("-th block:\n") + this->rawblocks_[b+1].get_info() );
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}
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}
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}
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// generate map of blocks using their uuid
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void generate_block_map()
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{
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for ( imc::block blk: rawblocks_ )
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{
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mapblocks_.insert( std::pair<std::string,imc::block>(blk.get_uuid(),blk) );
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}
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}
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// generate channel "environments"
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void generate_channel_env()
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{
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// declare single channel environment
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imc::channel_env chnenv;
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chnenv.reset();
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// collect affiliate blocks for every channel WITH CHANNEL and AFFILIATE
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// BLOCK CORRESPONDENCE GOVERNED BY BLOCK ORDER IN BUFFER!!
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for ( imc::block blk: rawblocks_ )
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{
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if ( blk.get_key().name_ == "CN" ) chnenv.CNuuid_ = blk.get_uuid();
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else if ( blk.get_key().name_ == "CD" ) chnenv.CDuuid_ = blk.get_uuid();
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else if ( blk.get_key().name_ == "CT" ) chnenv.CTuuid_ = blk.get_uuid();
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else if ( blk.get_key().name_ == "Cb" ) chnenv.Cbuuid_ = blk.get_uuid();
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else if ( blk.get_key().name_ == "CP" ) chnenv.CPuuid_ = blk.get_uuid();
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else if ( blk.get_key().name_ == "CR" ) chnenv.CRuuid_ = blk.get_uuid();
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else if ( blk.get_key().name_ == "CS" ) chnenv.CSuuid_ = blk.get_uuid();
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else if ( blk.get_key().name_ == "NT" ) chnenv.NTuuid_ = blk.get_uuid();
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else if ( blk.get_key().name_ == "NO" ) chnenv.NOuuid_ = blk.get_uuid();
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// check for currently associated channel
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if ( !chnenv.CNuuid_.empty() )
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{
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// any component/channel is closed by any of {CS, CC, CG, CB}
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if ( blk.get_key().name_ == "CS" || blk.get_key().name_ == "CC"
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|| blk.get_key().name_ == "CG" || blk.get_key().name_ == "CB" )
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{
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chnenv.uuid_ = chnenv.CNuuid_;
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channel_envs_.insert(
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std::pair<std::string,imc::channel_env>(chnenv.CNuuid_,chnenv)
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);
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std::cout<<chnenv.get_info()<<"\n";
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// reset channel uuid
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chnenv.CNuuid_.clear();
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}
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}
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// in contrast to component closed by CS block the blocks CB, CG, CC
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// already belong to NEXT component
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if ( blk.get_key().name_ == "CB" ) chnenv.CBuuid_ = blk.get_uuid();
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else if ( blk.get_key().name_ == "CG" ) chnenv.CGuuid_ = blk.get_uuid();
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else if ( blk.get_key().name_ == "CC" ) chnenv.CCuuid_ = blk.get_uuid();
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}
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}
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// parse channel's raw data
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template<typename datatype>
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void convert_data_to_type(std::vector<unsigned char>& subbuffer,
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std::vector<imc::datatype>& channel)
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{
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// check number of elements of type "datatype" in buffer
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if ( subbuffer.size() != channel.size()*sizeof(datatype) )
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{
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throw std::runtime_error("size mismatch between subbuffer and datatype");
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}
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// extract every single number of type "datatype" from buffer
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for ( unsigned long int i = 0; i < channel.size(); i++ )
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{
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// declare number of required type and point it to first byte in buffer
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// representing the number
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datatype df;
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uint8_t* dfcast = reinterpret_cast<uint8_t*>(&df);
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for ( unsigned long int j = 0; j < sizeof(datatype); j++ )
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{
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dfcast[j] = (int)subbuffer[i*sizeof(datatype)+j];
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}
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// save number in channel
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channel[i] = df;
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}
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}
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public:
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// provide buffer size
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unsigned long int buffer_size()
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{
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return buffer_.size();
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}
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// get blocks
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std::vector<imc::block>& blocks()
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{
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return rawblocks_;
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}
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// get computational complexity
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unsigned long int& computational_complexity()
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{
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return cplxcnt_;
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}
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// list a particular type of block
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std::vector<imc::block> list_blocks(imc::key mykey)
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{
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std::vector<imc::block> myblocks;
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for ( imc::block blk: this->rawblocks_ )
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{
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if ( blk.get_key() == mykey ) myblocks.push_back(blk);
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}
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return myblocks;
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}
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// list all groups (associated to blocks "CB")
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std::vector<imc::block> list_groups()
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{
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return this->list_blocks(imc::get_key(true,"CB"));
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}
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// list all channels
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std::vector<std::string> list_channels()
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{
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std::vector<std::string> channels;
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for ( imc::block blk: this->rawblocks_ )
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{
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if ( blk.get_key() == imc::get_key(true,"CN") )
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{
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imc::parameter prm = blk.get_parameters()[6];
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channels.push_back(blk.get_parameter(prm));
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}
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}
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return channels;
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}
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};
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}
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#endif
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//---------------------------------------------------------------------------//
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