/*
 *  Utilities
 *  Intender
 *
 *  Created by Lucas on 20/01/2007.
 *  Distributed under the GNU General Public Licence
 *
 */

#include "Utilities.h"
#include <stdlib.h>
#include <string.h>

int fclean (char*s, FILE *fp)
{
   int err = 0;

   char *p = strchr (s, '\n');
   if (p != NULL)
   {
      *p = 0;
   }
   else
   {
      int c;
       while ((c=fgetc(fp))!='\n' && c != EOF)
       {
       }
       err=1;
   }
   return err;
}


/* -ed- deplace 'const' */
char *strFromStrings (char *str1, char const *str2)
{
   if ((str1 == NULL) && (str2 == NULL))
      return NULL;
   if (str1 == NULL)
      return strdup (str2);              /* -ed- warning : heresie !  Ajoute strdup() */
   if (str2 == NULL)
      return str1;

   char *strCat = NULL;
   size_t len1;
   if (str1 == NULL)
      len1 = 0;
   else
      len1 = strlen (str1);

   void *tmp = realloc (str1, len1 + strlen (str2) + 1);

   if (tmp != NULL)
   {
      strCat = tmp;
      if (str1 == NULL)
      {
         strcpy (strCat, "");
      }
      strcat (strCat, str2);
   }
   else
   {
      free (strCat), strCat = NULL;
   }

   return strCat;
}

char *readFromFile (const char *path)
{
   char *cData = NULL;
   FILE *fichier = fopen (path, "r");

   printf ("opening %s\n", path);

   if (fichier != NULL)
   {
      char chaine[BUFSIZ];
      unsigned long lines = 0;
      while (fgets (chaine, sizeof chaine, fichier) != NULL)
      {
         cData = strFromStrings (cData, chaine);
         if (cData == NULL)
         {
            puts ("memory error");
            break;
         }
         lines++;
      }
      printf ("%lu lines read\n", lines);
      fclose (fichier);
   }

   return cData;
}

unsigned int writeToFile (const char *path, const char *data)
{
   FILE *fichier = fopen (path, "w");

   if (fichier != NULL)
   {
      unsigned int lgt = strlen (data);
      unsigned int i = 0;
      for (i = 0; i < lgt; i++)
      {
         fputc (data[i], fichier);
      }
      fclose (fichier);
      return 1;
   }
   else
   {
      return 0;
   }
}