#include "FileNameTools.h"
#include <iostream.h>
#include <string>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <errno.h>

bool FNT_hasExtension(const char* filename, const char *ending)
{
  int lenf = strlen (filename);
  int lene = strlen (ending);
  if (lenf <= lene)
    return false;

  return (0 == strcmp (filename+lenf-lene, ending)); 
}

string FNT_rootname(string filename)
{
  string::size_type dotPos = filename.find_last_of(".");
  if (dotPos == string::npos)
    {
      return filename;
    }
  else
    {
      string rootname = filename.substr(0,dotPos);
      return rootname;
    }
}

string FNT_extension(string filename)
{
  string::size_type dotPos = filename.find_last_of(".");
  if (dotPos == string::npos)
    {
      return "";
    }
  else
    {
      string ext = filename.substr(dotPos,filename.size());
      return ext;
    }
}

string FNT_removeTrailingSlash(string filename)
{
  string newfile=filename;
  while (newfile[newfile.size()-1]=='/')
    {
      newfile=newfile.substr(0,newfile.size()-1);
    }

  return newfile;
}

string FNT_tail(string filename)
{
  string filenoslash=FNT_removeTrailingSlash(filename);
  string::size_type slashPos = filenoslash.find_last_of("/");
  if (slashPos == string::npos)
    {
      return filenoslash;
    }
  else
    {
      string tail = filenoslash.substr(slashPos+1,filename.size());
      return tail;
    }
}

string FNT_dirname(string filename)
{
  //string filenoslash=FNT_removeTrailingSlash(filename);
  string::size_type slashPos = filename.find_last_of("/");
  if (slashPos == string::npos)
    {
      return ".";
    }
  else if (slashPos == 0)
    {
      return "/";
    }
  else
    {
      string tail = filename.substr(0,slashPos);
      return tail;
    }
}

bool fileExists(const char *filename) 
{
    struct stat st;

    if (stat(filename, &st) < 0) {
        if (errno != ENOENT)
            // stat() failed for a reason other than 
            // "file doesn't exist"
            perror(filename);

        return false;
    }
    else
        return true;
}