utils_global.cpp

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/* ==============================================================================================================================
 
   This file is part of CoastalME, the Coastal Modelling Environment.
 
   CoastalME is free software; you can redistribute it and/or modify it under the terms of the GNU General Public  License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version.
 
   This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
 
   You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
==============================================================================================================================*/
#include <cmath>
 
#include <cfloat>
 
#include <cstdio>
using std::size_t;
 
#include <sstream>
using std::stringstream;
using std::istringstream;
 
#include <ios>
using std::fixed;
using std::right;
 
#include "cme.h"
 
//===============================================================================================================================
//===============================================================================================================================
double dRound(double const d)
{
   // Rounds positive or negative doubles correctly
   return ((d < 0.0) ? ceil(d - 0.5) : floor(d + 0.5));
}
 
//===============================================================================================================================
//===============================================================================================================================
int nRound(double const d)
{
   // Rounds positive or negative doubles correctly
   return static_cast<int>((d < 0.0) ? ceil(d - 0.5) : floor(d + 0.5));
}
 
// bool bIsWhole(double d)
// {
//    // From http://answers.yahoo.com/question/index?qid=20110320132617AAMdb7u
// return (static_cast<int>(d) == d);
// }
 
//===============================================================================================================================
//===============================================================================================================================
bool bIsStringValidDouble(string& str)
{
   istringstream iStr(str);
   double dDummy;
 
   if (!(iStr >> dDummy))
      return false;
 
   return true;
}
 
//===============================================================================================================================
//===============================================================================================================================
bool bIsStringValidInt(string& str)
{
   // Trim leading whitespace
   size_t const nPos = str.find_first_not_of(" \t");
 
   if (nPos != string::npos)
      str = str.substr(nPos);
 
   // If the first character is the sign, remove it
   if ((str[0] == '-') || (str[0] == '+'))
      str.erase(0, 1);
 
   // Now check that the string contains only numbers
   return (str.find_first_not_of("0123456789") == string::npos);
}
 
//===============================================================================================================================
//===============================================================================================================================
ostream& operator<<(ostream& ostr, const FillToWidth& args)
{
   ostr.fill(args.chFill);
   ostr.width(args.nWidth);
 
   return ostr;
}
 
//===============================================================================================================================
//===============================================================================================================================
string strDbl(double const dX, int const nDigits)
{
   stringstream ss;
   ss << fixed;
   ss.precision(nDigits); // Set the number of places after decimal
   ss << dX;
   return ss.str();
}
 
//===============================================================================================================================
//===============================================================================================================================
string strDblRight(double const dX, int const nDigits, int const nWidth, bool const bShowDash)
{
   stringstream ss;
   ss << fixed << right;
   ss.fill(' ');
   ss.width(nWidth - 1);
 
   if (bFPIsEqual(dX, 0.0, TOLERANCE))
   {
      if (bShowDash)
         ss << "-";
 
      else
         ss << SPACE;
   }
 
   else
   {
      ss.precision(nDigits); // Set number of places after decimal
      ss << dX;
   }
 
   ss << " "; // Add a final space
   return ss.str();
}
 
//===============================================================================================================================
//===============================================================================================================================
string strIntRight(int const nX, int const nWidth)
{
   stringstream ss;
   ss << fixed << right;
   ss.fill(' ');         // Fill space around displayed number
   ss.width(nWidth - 1); // Set width around displayed number
   ss << nX;
   ss << " "; // Add a final space
   return ss.str();
}
 
//===============================================================================================================================
//===============================================================================================================================
string strCentre(const char* pchIn, int const nWidth)
{
   string const strIn(pchIn);
   stringstream ss, spaces;
   int const nPadding = nWidth - static_cast<int>(strIn.size());
 
   for (int i = 0; i < nPadding / 2; ++i)
      spaces << " ";
 
   ss << spaces.str() << strIn << spaces.str();
 
   if (nPadding > 0 && nPadding % 2 != 0) // If odd number, add one space
      ss << " ";
 
   return ss.str();
}
 
//===============================================================================================================================
//===============================================================================================================================
string strCentre(const string& strIn, int const nWidth)
{
   stringstream ss, spaces;
   int const nPadding = nWidth - static_cast<int>(strIn.size());
 
   for (int i = 0; i < nPadding / 2; ++i)
      spaces << " ";
 
   ss << spaces.str() << strIn << spaces.str();
 
   if (nPadding > 0 && nPadding % 2 != 0) // If odd number, add one space
      ss << " ";
 
   return ss.str();
}
 
//===============================================================================================================================
//===============================================================================================================================
string strRight(const string& strIn, int const nWidth)
{
   stringstream ss, spaces;
   int const nPadding = nWidth - static_cast<int>(strIn.size()) - 1;
 
   for (int i = 0; i < nPadding; ++i)
      spaces << " ";
 
   ss << spaces.str() << strIn;
   ss << " ";
   return ss.str();
}
 
//===============================================================================================================================
//===============================================================================================================================
string strRight(const char* pchIn, int const nWidth)
{
   string const strIn(pchIn);
   stringstream ss, spaces;
   int const nPadding = nWidth - static_cast<int>(strIn.size()) - 1;
 
   for (int i = 0; i < nPadding; ++i)
      spaces << " ";
 
   ss << spaces.str() << strIn;
   ss << " ";
   return ss.str();
}
 
//===============================================================================================================================
//===============================================================================================================================
string strLeft(const string& strIn, int const nWidth)
{
   stringstream ss, spaces;
   int const nPadding = nWidth - static_cast<int>(strIn.size());
 
   for (int i = 0; i < nPadding; ++i)
      spaces << " ";
 
   ss << strIn << spaces.str();
   return ss.str();
}
 
//===============================================================================================================================
//===============================================================================================================================
string strLeft(const char* pchIn, int const nWidth)
{
   string const strIn(pchIn);
   stringstream ss, spaces;
   int const nPadding = nWidth - static_cast<int>(strIn.size());
 
   for (int i = 0; i < nPadding; ++i)
      spaces << " ";
 
   ss << strIn << spaces.str();
   return ss.str();
}
 
//===============================================================================================================================
//===============================================================================================================================
string strRightPerCent(double const d1, double const d2, int const nWidth, int const nDigits, bool const bShowDash)
{
   stringstream ss;
   ss << fixed << right;
 
   // Are either of the inputs zero?
   if ((bFPIsEqual(d1, 0.0, TOLERANCE)) || (bFPIsEqual(d2, 0.0, TOLERANCE)))
   {
      ss.fill(' ');
      ss.width(nWidth - 1);
 
      if (bShowDash)
         ss << "-";
 
      else
         ss << SPACE;
   }
 
   else
   {
      // Non-zero, so calculate the percentage
      double const dResult = 100 * d1 / d2;
 
      stringstream ssResult;
      ssResult << fixed << right;
      ssResult.precision(nDigits);
      ssResult << "(" << dResult << "%)";
 
      long int const nResultWidth = ssResult.str().size();
 
      for (int i = 0; i < (nWidth - nResultWidth - 1); i++)
         ss << SPACE;
 
      ss << ssResult.str();
   }
 
   // Append a final space
   ss << " ";
 
   return ss.str();
}