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#include <string>
#include "casehandler.h"

CaseHandler::CaseHandler() { }

CaseHandler::~CaseHandler() { }

void CaseHandler::adjustCase(string &buffer, string &comparison)
{
  string::iterator it;
  int countBuffer;
  bool initialCapital;

  countBuffer = 0;
  initialCapital = false;

  // preserve all caps
  for (it = buffer.begin(); it != buffer.end(); ++it)
    if (isalpha(*it) && isupper(*it))
      ++countBuffer;

  if (countBuffer > 2)
  {
    for (it = buffer.begin(); it != buffer.end(); ++it)
      if (isalpha(*it))
        *it = toupper(*it);
    return;
  }
      
  // preserve initial capital
  it = comparison.begin();
  if (isalpha(*it) && isupper(*it))
    initialCapital = true;

  for (++it; it != comparison.end(); ++it)
    if (isalpha(*it) && isupper(*it))
      return;

  if (initialCapital)
  {
    it = buffer.begin();
    if (isalpha(*it))
      *it = toupper(*it);
    for (++it; it != buffer.end(); ++it)
      if (isalpha(*it) && isupper(*it))
        *it = tolower(*it);
  }
}

string CaseHandler::lowerCase(string &s)
{
  string::iterator it;
  string localString(s);
  for (
    it = localString.begin();
    it != localString.end();
    it++)
  {
    if (*it < 0)
      continue;
    *it = tolower(*it);
  } 
  return localString;
}