#include <string.h>
#include <clib/dos_protos.h>

void extract_dir(char *filename)
{
  char *aux;

  aux = strrchr(filename, '/');
  if (!aux) 
    aux = strrchr(filename, ':');
  if (aux)
  {
    aux++;
    *aux = '\0';
  }
  else 
    filename[0] = '\0';
}

void extract_file(char *path, char *filename)
{
  strcpy(filename, (char *) FilePart((APTR) path));
}

void add_extend(char *filename, char *extend)
{
  char *aux;

  aux = strrchr(filename,'.');
  if (!aux) 
    strcat(filename,extend);
  else 
    if (strcmp(aux,extend)!=0) 
      strcat(filename,extend);
}

void remove_extend(char *filename)
{
  char *aux;

  aux = strrchr(filename,'.');
  if (aux) *aux='\0';
}

void change_extend(char *filename, char * extend)
{
  remove_extend(filename);
  add_extend(filename,extend);
}