HighlightingAlgorithmSimple.cpp

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#include <Poco/UTF8String.h>

#include "HighlightingAlgorithmSimple.hpp"

void HighlightingAlgorithmSimple::process(const std::vector<std::pair<SearchType, std::string> > &searchStrings, const Poco::SharedPtr<std::string> contentPtr,
                                  ContentsStorageBase::WordPosPtrType wordMapPtr, std::map<unsigned int, WordPos> &wordOffsetMap)
{
  if(contentPtr.isNull() || contentPtr->empty())
  {
    return;
  }  
  unsigned int fakePosition = 0;
// cppcheck-suppress variableScope  
  size_t findPos = 0;
  const std::string lowerCaseContent = Poco::UTF8::toLower(*contentPtr);
  WordPos localWpos;
  for(unsigned int i = 0; i < searchStrings.size(); i++)
  {
    findPos = 0;
    const std::string lowerCaseSearchString = Poco::UTF8::toLower(searchStrings[i].second);
    while((findPos = lowerCaseContent.find(lowerCaseSearchString, findPos)) != std::string::npos)
    {
      fakePosition = static_cast<unsigned int>(findPos);
      auto it = wordOffsetMap.find(fakePosition);
      if(it != wordOffsetMap.end())
      {
        if(((*it).second.endOffset - (*it).second.beginOffset) < lowerCaseSearchString.length())
        {
          (*it).second.endOffset = ((*it).second.beginOffset + lowerCaseSearchString.length());
        }
      }
      else
      {
        localWpos.beginOffset = fakePosition;
        localWpos.endOffset = fakePosition + lowerCaseSearchString.length();
        localWpos.position = fakePosition;
        localWpos.segmentId++;
        wordOffsetMap.insert(std::pair<unsigned int, WordPos>(fakePosition, localWpos));
      }
      findPos++;
      if(wordOffsetMap.size() == maxNumber)
      {
        break;
      }
    }
    if(wordOffsetMap.size() == maxNumber)
    {
      break;
    }
  }  
}