Gabriele Cosmo
565 lines
16 KiB
Plaintext
565 lines
16 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_wroot_directory
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#define tools_wroot_directory
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#include "idir"
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#include "date"
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#include "key"
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#include "ifile"
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#include "date"
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#include "buffer"
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#include "iobject"
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#include "../strip"
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#include "../vmanip"
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#include "../forit"
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#include <vector>
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#include <list>
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namespace tools {
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namespace wroot {
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class directory : public virtual idir {
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static uint32 class_version() {return 1;}
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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::wroot::directory");
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return s_v;
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}
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public: //idir
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virtual ifile& file() {return m_file;}
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virtual seek seek_directory() const {return m_seek_directory;}
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virtual void append_object(iobject* a_object) {m_objs.push_back(a_object);} //take ownership of a_object
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public:
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directory(ifile& a_file)
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:m_file(a_file)
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,m_parent(0)
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,m_is_valid(false)
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,m_date_C(0)
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,m_date_M(0)
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,m_nbytes_keys(0)
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,m_nbytes_name(0)
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,m_seek_directory(0)
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,m_seek_parent(0)
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,m_seek_keys(0)
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{
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#ifdef TOOLS_MEM
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mem::increment(s_class().c_str());
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#endif
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}
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directory(ifile& a_file,const std::string& a_name,const std::string& a_title)
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:m_file(a_file)
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,m_parent(0)
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,m_is_valid(false)
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,m_name(a_name)
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,m_title(a_title)
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,m_nbytes_keys(0)
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,m_nbytes_name(0)
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,m_seek_directory(0)
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,m_seek_parent(0)
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,m_seek_keys(0)
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{
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#ifdef TOOLS_MEM
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mem::increment(s_class().c_str());
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#endif
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m_date_C = get_date();
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m_date_M = get_date();
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if(m_name.empty()) {
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m_file.out() << "tools::wroot::directory::directory :"
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<< " directory name cannot be \"\"."
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<< std::endl;
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return; //FIXME : throw
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}
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if(m_name.find('/')!=std::string::npos) {
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m_file.out() << "tools::wroot::directory::directory :"
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<< " directory name " << sout(m_name)
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<< " cannot contain a slash."
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<< std::endl;
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return; //FIXME : throw
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}
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if(m_title.empty()) m_title = m_name;
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m_is_valid = true;
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}
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directory(ifile& a_file,
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directory* a_parent, //assume a_parent not nul.
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const std::string& a_name,
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const std::string& a_title)
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:m_file(a_file)
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,m_parent(a_parent)
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,m_is_valid(false)
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,m_name(a_name)
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,m_title(a_title)
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,m_nbytes_keys(0)
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,m_nbytes_name(0)
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,m_seek_directory(0)
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,m_seek_parent(0)
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,m_seek_keys(0)
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{
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#ifdef TOOLS_MEM
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mem::increment(s_class().c_str());
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#endif
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m_date_C = get_date();
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m_date_M = get_date();
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if(m_name.empty()) {
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m_file.out() << "tools::wroot::directory::directory :"
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<< " directory name cannot be \"\"."
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<< std::endl;
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return; //FIXME : throw
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}
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if(m_name.find('/')!=std::string::npos) {
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m_file.out() << "tools::wroot::directory::directory :"
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<< " directory name " << sout(m_name)
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<< " cannot contain a slash."
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<< std::endl;
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return; //FIXME : throw
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}
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if(m_title.empty()) m_title = m_name;
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if(m_parent->find_key(m_name)) {
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m_file.out() << "tools::wroot::directory::directory :"
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<< " directory " << sout(m_name) << " exists already."
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<< std::endl;
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return; //FIXME : throw
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}
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m_seek_parent = m_parent->seek_directory();
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uint32 nbytes = record_size();
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wroot::key* key = new wroot::key(m_file.out(),m_file,m_parent->seek_directory(),
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m_name,m_title,"TDirectory",nbytes); // It does a m_file.set_END().
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m_nbytes_name = key->key_length();
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m_seek_directory = key->seek_key(); //at EOF
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if(!m_seek_directory) {
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m_file.out() << "tools::wroot::directory::directory :"
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<< " bad key."
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<< std::endl;
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delete key;
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return; //FIXME : throw
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}
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{char* buffer = key->data_buffer();
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wbuf wb(m_file.out(),m_file.byte_swap(),key->eob(),buffer);
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if(!to_buffer(wb)) {
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m_file.out() << "tools::wroot::directory::directory :"
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<< " directory name " << sout(m_name)
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<< " cannot fill buffer."
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<< std::endl;
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delete key;
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return; //FIXME : throw
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}}
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uint16 cycle = m_parent->append_key(key);
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key->set_cycle(cycle);
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if(!key->write_self(m_file)) {
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m_file.out() << "tools::wroot::directory::directory :"
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<< " key.write_self() failed."
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<< std::endl;
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return; //FIXME : throw
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}
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uint32 n;
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if(!key->write_file(m_file,n)) {
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m_file.out() << "tools::wroot::directory::directory :"
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<< " directory name " << sout(m_name)
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<< " cannot write key to file."
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<< std::endl;
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return; //FIXME : throw
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}
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m_is_valid = true;
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}
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virtual ~directory(){
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clear_dirs();
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clear_objs();
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clear_keys();
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#ifdef TOOLS_MEM
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mem::decrement(s_class().c_str());
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#endif
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}
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protected:
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directory(const directory& a_from)
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:idir(a_from)
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,m_file(a_from.m_file)
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,m_parent(0)
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,m_is_valid(false){
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#ifdef TOOLS_MEM
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mem::increment(s_class().c_str());
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#endif
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}
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directory& operator=(const directory &){
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m_is_valid = false;
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return *this;
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}
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public:
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bool is_valid() const {return m_is_valid;}
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void set_seek_directory(seek a_seek) {m_seek_directory = a_seek;}
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directory* mkdir(const std::string& a_name,const std::string& a_title = ""){
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// Create a sub-directory and return a pointer to the created directory.
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// Note that the directory name cannot contain slashes.
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if(a_name.empty()) {
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m_file.out() << "tools::wroot::directory::mkdir :"
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<< " directory name cannot be \"\"."
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<< std::endl;
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return 0;
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}
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if(a_name.find('/')!=std::string::npos) {
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m_file.out() << "tools::wroot::directory::mkdir :"
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<< " " << sout(a_name)
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<< " cannot contain a slash."
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<< std::endl;
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return 0;
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}
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directory* dir = new directory(m_file,this,a_name,a_title.empty()?a_name:a_title);
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if(!dir->is_valid()) {
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m_file.out() << "tools::wroot::directory::mkdir :"
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<< " directory badly created."
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<< std::endl;
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delete dir;
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return 0;
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}
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m_dirs.push_back(dir);
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return dir;
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}
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//uint32 nbytes_name() const {return m_nbytes_name;}
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void set_nbytes_name(uint32 a_n) {m_nbytes_name = a_n;}
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uint32 record_size() const {
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uint32 nbytes = sizeof(short);
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nbytes += sizeof(date); //m_date_C.record_size();
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nbytes += sizeof(date); //m_date_M.record_size();
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nbytes += sizeof(m_nbytes_keys);
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nbytes += sizeof(m_nbytes_name);
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//ROOT version >= 40000:
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nbytes += sizeof(seek);
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nbytes += sizeof(seek);
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nbytes += sizeof(seek);
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return nbytes;
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}
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bool close() {
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if(!save()) return false;
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clear_dirs();
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clear_objs();
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clear_keys();
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return true;
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}
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bool to_buffer(wbuf& a_wb){
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// Decode input buffer.
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// (Name, title) are stored in the (name, title) of the associated key.
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short version = class_version();
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version += big_file_version_tag(); //GB : enforce writing on seek (and not seek32).
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if(!a_wb.write(version)) return false;
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if(!a_wb.write(m_date_C)) return false;
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if(!a_wb.write(m_date_M)) return false;
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if(!a_wb.write(m_nbytes_keys)) return false;
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if(!a_wb.write(m_nbytes_name)) return false;
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if(!a_wb.write(m_seek_directory)) return false;
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if(!a_wb.write(m_seek_parent)) return false;
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if(!a_wb.write(m_seek_keys)) return false;
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if(m_file.verbose()) {
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m_file.out() << "tools::wroot::key::to_buffer :"
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<< " nbytes keys : " << m_nbytes_keys
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<< ", pos keys : " << m_seek_keys
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<< std::endl;
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}
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return true;
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}
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bool write(uint32& a_nbytes){
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// Write all objects in memory to disk.
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// Loop on all objects in memory (including subdirectories).
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// A new key is created in the m_keys linked list for each object.
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// For allowed options see TObject::Write().
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// The directory header info is rewritten on the directory header record
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a_nbytes = 0;
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if(m_file.verbose()) {
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m_file.out() << "tools::wroot::directory::write :"
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<< " " << sout(m_name)
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<< " : " << m_dirs.size()
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<< " : " << m_objs.size()
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<< " objects."
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<< std::endl;
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}
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uint32 nbytes = 0;
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{tools_vforcit(directory*,m_dirs,it) {
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uint32 n;
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if(!(*it)->write(n)) return false;
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nbytes += n;
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}}
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{tools_vforit(iobject*,m_objs,it) {
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uint32 n;
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if(!write_object(*(*it),n)) {
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m_file.out() << "tools::wroot::directory::write :"
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<< " for directory " << sout(m_name)
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<< ", write_object " << sout((*it)->name())
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<< " failed."
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<< std::endl;
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return false;
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}
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nbytes += n;
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}}
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if(!save_self()) {
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m_file.out() << "tools::wroot::directory::write :"
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<< " for directory " << sout(m_name)
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<< ", save_self failed."
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<< std::endl;
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return false; //it will write keys of objects.
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}
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a_nbytes = nbytes;
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return true;
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}
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void clear_dirs() {safe_clear<directory>(m_dirs);}
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void clear_objs() {safe_clear<iobject>(m_objs);}
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const std::list<key*>& keys() const {return m_keys;}
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//std::list<key*>& keys() {return m_keys;}
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protected:
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void clear_keys() {
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std::list<key*>::iterator it;
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for(it=m_keys.begin();it!=m_keys.end();) {
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key* k = *it;
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it = m_keys.erase(it);
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delete k;
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}
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m_keys.clear();
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}
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bool save(){
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if(!save_self()) return false;
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tools_vforit(directory*,m_dirs,it) {
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if(!(*it)->save()) return false;
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}
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return true;
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}
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bool save_self() {
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// Save Directory keys and header :
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// If the directory has been modified (fModified set), write the keys
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// and the directory header.
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//if (fModified || aForce) {
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// if(!fFile.freeSegments().empty()) {
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// if(!writeKeys()) return false; // Write keys record.
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// if(!writeHeader()) return false; // Update directory record.
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// }
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//}
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if(!write_keys()) return false;
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if(!write_header()) return false;
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return true;
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}
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key* find_key(const std::string& a_name) {
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if(m_file.verbose()) {
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m_file.out() << "tools::wroot::directory::find_key :"
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<< " " << sout(a_name) << " ..."
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<< std::endl;
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}
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tools_lforcit(key*,m_keys,it) {
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if((*it)->object_name()==a_name) return *it;
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}
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return 0;
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}
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seek seek_keys() const {return m_seek_keys;}
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uint16 append_key(key* a_key){ //take ownership of a_key
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tools_lforit(key*,m_keys,it) {
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if((*it)->object_name()==a_key->object_name()) {
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m_keys.insert(it,a_key); //a_key will be before *it.
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return ((*it)->cycle() + 1);
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}
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}
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// Not found :
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m_keys.push_back(a_key);
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return 1;
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}
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bool write_keys(){
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// The list of keys (m_keys) is written as a single data record
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// Delete the old keys structure if it exists
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//if(fSeekKeys) {
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// if(!fFile.makeFreeSegment
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// (fSeekKeys, fSeekKeys + fNbytesKeys -1)) return false;
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//}
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// Write new keys record :
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uint32 nkeys = uint32(m_keys.size());
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// Compute size of all keys
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uint32 nbytes = sizeof(nkeys);
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{tools_lforit(key*,m_keys,it) {
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nbytes += (*it)->key_length();
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}}
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key headerkey(m_file.out(),m_file,m_seek_directory,m_name,m_title,"TDirectory",nbytes); // m_file.set_END().
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if(!headerkey.seek_key()) return false;
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{char* buffer = headerkey.data_buffer();
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wbuf wb(m_file.out(),m_file.byte_swap(),headerkey.eob(),buffer);
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if(!wb.write(nkeys)) return false;
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{tools_lforit(key*,m_keys,it) {
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if(!((*it)->to_buffer(wb,m_file.verbose()))) return false;
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}}}
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m_seek_keys = headerkey.seek_key();
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m_nbytes_keys = headerkey.number_of_bytes();
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if(m_file.verbose()) {
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m_file.out() << "tools::wroot::directory::write_keys :"
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<< " write header key"
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<< " " << sout(m_name)
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<< " " << sout(m_title)
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<< " (" << nkeys
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<< ", " << nbytes
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<< ", " << m_seek_keys
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<< ", " << m_nbytes_keys
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<< "):"
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<< std::endl;
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}
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headerkey.set_cycle(1);
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if(!headerkey.write_self(m_file)) {
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m_file.out() << "tools::wroot::directory::write_keys :"
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<< " key.write_self() failed."
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<< std::endl;
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return false;
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}
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uint32 n;
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return headerkey.write_file(m_file,n);
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}
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bool write_header(){
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// Overwrite the Directory header record.
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uint32 nbytes = record_size();
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char* header = new char[nbytes];
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char* buffer = header;
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m_date_M = get_date();
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wbuf wb(m_file.out(),m_file.byte_swap(),header+nbytes,buffer);
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if(!to_buffer(wb)) {
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delete [] header;
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return false;
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}
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// do not overwrite the name/title part
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seek pointer = m_seek_directory + m_nbytes_name;
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//fModified = false;
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if(!m_file.set_pos(pointer)) {
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delete [] header;
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return false;
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}
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if(!m_file.write_buffer(header,nbytes)) {
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delete [] header;
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return false;
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}
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if(!m_file.synchronize()) {
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delete [] header;
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return false;
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}
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delete [] header;
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return true;
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}
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bool write_object(iobject& a_obj,uint32& a_nbytes){
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buffer bref(m_file.out(),m_file.byte_swap(),256*128); //32768
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if(!a_obj.stream(bref)) {
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m_file.out() << "tools::wroot::directory::write_object :"
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<< " cannot stream object of store class name "
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<< " " << sout(a_obj.store_class_name()) << "."
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<< std::endl;
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a_nbytes = 0;
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return false;
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}
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std::string name = a_obj.name();
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strip(name);
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//first create the key to get key_length();
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wroot::key* key = new wroot::key(m_file.out(),m_file,m_seek_directory,
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name,
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a_obj.title(),a_obj.store_class_name(),
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bref.length()); // It does a m_file.set_END().
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if(!key->seek_key()) {
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delete key;
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return false;
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}
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if(!bref.displace_mapped(key->key_length())) { //done before compression.
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delete key;
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return false;
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}
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char* kbuf = 0;
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uint32 klen = 0;
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bool kdelete = false;
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m_file.compress_buffer(bref,kbuf,klen,kdelete);
|
|
|
|
::memcpy(key->data_buffer(),kbuf,klen);
|
|
if(kdelete) delete [] kbuf;
|
|
|
|
{uint32 nkey = key->key_length()+klen;
|
|
m_file.set_END(key->seek_key()+nkey);
|
|
key->set_number_of_bytes(nkey);}
|
|
|
|
uint16 cycle = append_key(key);
|
|
key->set_cycle(cycle);
|
|
|
|
if(!key->write_self(m_file)) {
|
|
m_file.out() << "tools::wroot::directory::write_object :"
|
|
<< " key.write_self() failed."
|
|
<< std::endl;
|
|
return false;
|
|
}
|
|
|
|
//FIXME m_file.sumBuffer(key->object_size()); //uncompressed data size.
|
|
|
|
if(m_file.verbose()) {
|
|
m_file.out() << "tools::wroot::directory::_write_buffer :"
|
|
<< " " << sout(a_obj.name()) << "."
|
|
<< std::endl;
|
|
}
|
|
|
|
return key->write_file(m_file,a_nbytes);
|
|
}
|
|
|
|
protected:
|
|
ifile& m_file;
|
|
directory* m_parent;
|
|
bool m_is_valid;
|
|
std::string m_name;
|
|
std::string m_title;
|
|
std::vector<directory*> m_dirs;
|
|
std::vector<iobject*> m_objs;
|
|
std::list<key*> m_keys;
|
|
// Record (stored in file):
|
|
date m_date_C; //Date and time when directory is created
|
|
date m_date_M; //Date and time of last modification
|
|
uint32 m_nbytes_keys; //Number of bytes for the keys
|
|
uint32 m_nbytes_name; //Number of bytes in TNamed at creation time
|
|
seek m_seek_directory; //Location of directory on file
|
|
seek m_seek_parent; //Location of parent directory on file
|
|
seek m_seek_keys; //Location of Keys record on file
|
|
};
|
|
|
|
}}
|
|
|
|
#endif
|