Gabriele Cosmo
335 lines
9.4 KiB
Plaintext
335 lines
9.4 KiB
Plaintext
// Copyright (C) 2010, Guy Barrand. All rights reserved.
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// See the file tools.license for terms.
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#ifndef tools_rroot_basket
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#define tools_rroot_basket
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#include "iro"
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#include "key"
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#include "../scast"
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#include "buffer"
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#include "cids"
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namespace tools {
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namespace rroot {
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class basket : public virtual iro, public key {
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typedef key parent;
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static uint32 kDisplacementMask() {return 0xFF000000;}
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public:
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static const std::string& s_class() {
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static const std::string s_v("tools::rroot::basket");
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return s_v;
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}
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public: //iro
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virtual void* cast(const std::string& a_class) const {
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if(void* p = cmp_cast<basket>(this,a_class)) return p;
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return 0;
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}
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virtual const std::string& s_cls() const {return s_class();}
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public:
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static cid id_class() {return basket_cid();}
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virtual void* cast(cid a_class) const {
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if(void* p = cmp_cast<basket>(this,a_class)) {return p;}
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else return 0;
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}
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public:
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virtual iro* copy() const {return new basket(*this);}
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virtual bool stream(buffer& a_buffer) {
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_clear();
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uint32 startpos = a_buffer.length();
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if(!parent::from_buffer(a_buffer.byte_swap(),a_buffer.eob(),a_buffer.pos(),a_buffer.verbose())) return false;
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uint32 fBufferSize;
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short v;
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if(!a_buffer.read_version(v)) return false;
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if(!a_buffer.read(fBufferSize)) return false;
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if(!a_buffer.read(m_nev_buf_size)) return false;
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if(!a_buffer.read(m_nev)) return false;
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if(!a_buffer.read(m_last)) return false;
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char flag;
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if(!a_buffer.read(flag)) return false;
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if(m_last>fBufferSize) fBufferSize = m_last;
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uint16 basket_key_length = a_buffer.length()-startpos;
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if(basket_key_length!=m_key_length) {
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m_key_length = basket_key_length;
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}
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if(!m_object_size) {
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m_object_size = m_nbytes-m_key_length;
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}
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if(!flag) return true; //fHeaderOnly
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//G.Barrand : add the below test.
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if( (flag!=1) &&(flag!=2) &&
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(flag!=11)&&(flag!=12) &&
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(flag!=41)&&(flag!=42) &&
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(flag!=51)&&(flag!=52) ) {
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m_out << "tools::rroot::basket::stream :"
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<< " bad flag " << (int)flag
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<< std::endl;
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return false;
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}
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if((flag%10)!=2) {
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//due to the upper "G.Barrand if", flag is here in {1,11,41,51}
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if(!m_nev_buf_size) {
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m_out << "tools::rroot::basket::stream :"
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<< " m_nev_buf_size is zero." << std::endl;
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return false;
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}
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if(m_nev>m_nev_buf_size) {
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m_out << "tools::rroot::basket::stream :"
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<< " m_nev>m_nev_buf_size !"
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<< " m_nev " << m_nev
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<< " m_nev_buf_size " << m_nev_buf_size
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<< std::endl;
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return false;
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}
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m_entry_offset = new int[m_nev_buf_size];
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if(m_nev) {
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uint32 n;
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if(!a_buffer.read_array<int>(m_nev_buf_size,m_entry_offset,n)) {
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_clear();
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return false;
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}
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if((n!=m_nev)&&(n!=(m_nev+1))) {
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m_out << "tools::rroot::basket::stream :"
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<< " m_entry_offset read len mismatch."
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<< " n " << n
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<< " m_nev " << m_nev
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<< std::endl;
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_clear();
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return false;
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}
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}
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if(flag>40) {
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m_displacement = new int[m_nev_buf_size];
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uint32 n;
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if(!a_buffer.read_array<int>(m_nev_buf_size,m_displacement,n)) {
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_clear();
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return false;
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}
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if((n!=m_nev)&&(n!=(m_nev+1))) {
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m_out << "tools::rroot::basket::stream :"
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<< " m_displacement read len mismatch."
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<< " n " << n
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<< " m_nev " << m_nev
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<< std::endl;
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_clear();
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return false;
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}
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}
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} else {
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//m_nev_buf_size is the size in bytes of one entry.
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}
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if((flag==1)||(flag>10)) {
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delete [] m_buffer;
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m_buffer = 0;
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m_buf_size = 0;
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if(fBufferSize) {
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char* _buf = new char[fBufferSize];
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if(!_buf) {
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m_out << "tools::rroot::basket::stream :"
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<< " can't alloc " << fBufferSize << std::endl;
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_clear();
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return false;
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}
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if(v>1) {
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if(!a_buffer.read_fast_array(_buf,m_last)) {
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_clear();
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delete [] _buf;
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return false;
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}
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} else {
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uint32 n;
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if(!a_buffer.read_array<char>(fBufferSize,_buf,n)) {
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_clear();
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delete [] _buf;
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return false;
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}
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}
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m_buffer = _buf;
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m_buf_size = fBufferSize;
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}
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}
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return true;
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}
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public:
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basket(std::ostream& a_out)
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:parent(a_out)
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,m_nev_buf_size(0)
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,m_nev(0)
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,m_last(0)
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,m_entry_offset(0)
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,m_displacement(0)
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{
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}
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basket(std::ostream& a_out,seek a_pos,uint32 a_nbytes)
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:parent(a_out,a_pos,a_nbytes)
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,m_nev_buf_size(0)
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,m_nev(0)
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,m_last(0)
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,m_entry_offset(0)
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,m_displacement(0)
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{
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}
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virtual ~basket(){
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_clear();
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}
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public:
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basket(const basket& a_from)
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:iro(a_from)
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,parent(a_from)
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,m_nev_buf_size(a_from.m_nev_buf_size)
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,m_nev(a_from.m_nev)
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,m_last(a_from.m_last)
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,m_entry_offset(0)
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,m_displacement(0)
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{
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if(a_from.m_nev && a_from.m_entry_offset) {
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m_entry_offset = new int[a_from.m_nev];
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if(!m_entry_offset) {
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m_out << "tools::rroot::basket::basket(cpcstor) :"
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<< " can't alloc " << a_from.m_nev << "."
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<< std::endl;
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} else {
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uint32 len = a_from.m_nev*sizeof(int);
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::memcpy(m_entry_offset,a_from.m_entry_offset,len);
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}
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}
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if(a_from.m_nev && a_from.m_displacement) {
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m_displacement = new int[a_from.m_nev];
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if(!m_displacement) {
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m_out << "tools::rroot::basket::basket(cpcstor) :"
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<< " can't alloc " << a_from.m_nev << "."
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<< std::endl;
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} else {
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uint32 len = a_from.m_nev*sizeof(int);
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::memcpy(m_displacement,a_from.m_displacement,len);
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}
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}
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}
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basket& operator=(const basket& a_from){
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parent::operator=(a_from);
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if(&a_from==this) return *this;
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m_nev_buf_size = a_from.m_nev_buf_size;
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m_nev = a_from.m_nev;
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m_last = a_from.m_last;
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delete [] m_entry_offset;
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m_entry_offset = 0;
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delete [] m_displacement;
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m_displacement = 0;
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if(a_from.m_nev && a_from.m_entry_offset) {
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m_entry_offset = new int[a_from.m_nev];
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if(!m_entry_offset) {
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m_out << "tools::rroot::basket::operator=() :"
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<< " can't alloc " << a_from.m_nev << "."
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<< std::endl;
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} else {
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uint32 len = a_from.m_nev*sizeof(int);
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::memcpy(m_entry_offset,a_from.m_entry_offset,len);
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}
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}
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if(a_from.m_nev && a_from.m_displacement) {
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m_displacement = new int[a_from.m_nev];
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if(!m_displacement) {
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m_out << "tools::rroot::basket::operator=() :"
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<< " can't alloc " << a_from.m_nev << "."
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<< std::endl;
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} else {
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uint32 len = a_from.m_nev*sizeof(int);
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::memcpy(m_displacement,a_from.m_displacement,len);
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}
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}
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return *this;
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}
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public:
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int* entry_offset() {return m_entry_offset;}
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int* displacement() {return m_displacement;}
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uint32 nev_buf_size() const {return m_nev_buf_size;}
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uint32 nev() const {return m_nev;}
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uint32 last() const {return m_last;}
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bool read_offset_tables(bool a_byte_swap) {
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if(!m_buffer) return false;
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if(!m_last) return false;
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delete [] m_entry_offset;
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m_entry_offset = 0;
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buffer _buffer(m_out,a_byte_swap,m_buf_size,m_buffer,0,false);
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_buffer.set_offset(m_last);
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{uint32 n;
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if(!_buffer.read_array<int>(0,m_entry_offset,n)) {
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m_out << "tools::rroot::basket::read_offset_tables :"
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<< " read_array failed."
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<< std::endl;
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return false;
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}
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if((n!=m_nev)&&(n!=(m_nev+1))) {
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m_out << "tools::rroot::basket::read_offset_tables :"
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<< " m_entry_offset read len mismatch."
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<< " n " << n
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<< " m_nev " << m_nev
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<< std::endl;
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return false;
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}}
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delete [] m_displacement;
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m_displacement = 0;
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if(_buffer.length()!=_buffer.size()) {
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// There is more data in the buffer! It is the diplacement
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// array.
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uint32 n;
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if(!_buffer.read_array<int>(0,m_displacement,n)) {
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m_out << "tools::rroot::basket::read_offset_tables :"
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<< " readArray(2) failed."
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<< std::endl;
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return false;
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}
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if((n!=m_nev)&&(n!=(m_nev+1))) {
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m_out << "tools::rroot::basket::read_offset_tables :"
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<< " m_displacement read len mismatch."
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<< " n " << n
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<< " m_nev " << m_nev
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<< std::endl;
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return false;
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}
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}
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return true;
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}
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protected:
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void _clear(){
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delete [] m_entry_offset;
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delete [] m_displacement;
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m_entry_offset = 0;
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m_displacement = 0;
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}
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protected: //Named
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uint32 m_nev_buf_size; //Length in Int_t of m_entry_offset
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uint32 m_nev; //Number of entries in basket
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uint32 m_last; //Pointer to last used byte in basket
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int* m_entry_offset; //[m_nev] Offset of entries in fBuffer(TKey)
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int* m_displacement; //![m_nev] Displacement of entries in fBuffer(TKey)
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};
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}}
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#endif
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