ShredderReconstruct/unshred_main.cpp at master · jsffeng/ShredderReconstruct · GitHub

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//////////////////////////////////////////////////////////////////////////////////////////
//
//  Naming conventions used in source files and header files.
//
//  Let's assume the following text content to be unshredded by this programme.
//
//  a1|a2|a3
//  b1|b2|b3
//  c1|c2|c3
//  d1|d2|d3
//
//  In above example, a1, a2 or b1, etc. is a string with same width, "|" is the delimiter
//  used by programme.
//
//  In the programme, above data will be stored into following 2 dimensional vector:
//  {
//    {a1,b1,c1,d1},
//    {a2,b2,c2,d2},
//    {a3,b3,c3,d3}
//  }
//
//  A text strip refers to {a1,b1,c1,d1}, or {a2,b2,c2,d2}, etc.
//  A "column" is often used to refer a text strip in data members or variables in the programme.
//
//////////////////////////////////////////////////////////////////////////////////////////

#include <boost/algorithm/string/classification.hpp>
#include <boost/algorithm/string/trim.hpp>
#include <thread>
#include <iostream>
#include "singleton_diction.h"
#include "thread_controller.h"
#include "common_classes.h"
#include "text_unshredder.h"

using namespace std;

#ifndef UTFLAG
// Main function
int main()
#else
int UTmain(const string str_infile, const string str_outfile, bool b_thread_abnormal_flag)
#endif
{

  try
  {
    // Singleton class
    SingletonDiction & singleton_dict = SingletonDiction::GetInstance();
    singleton_dict.Init();
    singleton_dict.BuildWordPiece();

    const int max_thread_number = 10;
    thread unshred_thread[max_thread_number];

    TextUnshredder text_unshredder;

    // Populate Populate vec_text_columns_ from input file
#ifndef UTFLAG
    text_unshredder.GetInput("shredded_text.ascii");
#else
    text_unshredder.GetInput(str_infile);
#endif

    for (int i = 0; i < max_thread_number; ++i)
    {
      unshred_thread[i] = thread(ThreadController::DoTextUnshredderInThread,text_unshredder);
    }

    for (int i = 0; i < max_thread_number; ++i)
      unshred_thread[i].join();

#ifndef UTFLAG
    if (ThreadController::n_thread_abnormals_ > 0)
#else
    if (b_thread_abnormal_flag == true)
#endif
    {
      string s_abormals_count = to_string(ThreadController::n_thread_abnormals_);
      string s_threads_count = to_string(max_thread_number);
      string s_error_message = s_abormals_count + " out of " + s_threads_count + " threads threw abormal errors!";
      throw runtime_error(s_error_message);
    }

    if (ThreadController::vec_final_merged_text_.empty())
    {
      throw runtime_error("Abnormal error occured!");
    }
    else
    {
      for ( int i = 0; i < ThreadController::vec_final_merged_text_.size(); ++i)
      {
        boost::trim_right_if (ThreadController::vec_final_merged_text_[i], boost::is_any_of(" "));
      }

#ifndef UTFLAG
      TextFileOperation::WriteText("restored_text.ascii", ThreadController::vec_final_merged_text_);
#else
      TextFileOperation::WriteText(str_outfile, ThreadController::vec_final_merged_text_);
#endif
    }

    if (ThreadController::b_premature_flag_ == true)
    {
#ifndef UTFLAG
      cout <<"Partially restored! Number of "<< ThreadController::n_premature_column_count_ << " text strips cannot be restored successfully and just append to the right side!" << endl;
#endif

      return 1;
    }
    else
    {
#ifndef UTFLAG
      cout <<"Successfully restored!" << endl;
#endif

      return 0;
    }
  }

  catch(exception & ref_exception)
  {

#ifndef UTFLAG
    cout << ref_exception.what() << endl;
    cout << "Error occured. Abort!" << endl;
#endif
    return 2;
  }
}