-/* Wrappers to calling from function called "f" of fopen(), fclose() and fgets()
- * and calling exit_err() with appropriate error messages.
+/* Wrappers to calling from function called "f" of fopen(), fclose(), fgets()
+ * and fwrite() and calling exit_err() with appropriate error messages.
*/
extern FILE * try_fopen(char * path, char * mode, struct World * w, char * f);
extern void try_fclose(FILE * file, struct World * w, char * f);
-extern void try_fgets(char * line, int size, FILE * file,
- struct World * w, char * f);
+extern void try_fwrite(void * ptr, size_t size, size_t nmemb, FILE * stream,
+ struct World * w, char * f);
+
+
+
+/* Wrapper to calling fgets() from function called "f". The return code of
+ * fgets() is returned unless it is NULL *and* ferror() indicates that an error
+ * occured; otherwise end of file is assumed and NULL is returned properly.
+ */
+extern char * try_fgets(char * line, int size, FILE * file,
+ struct World * w, char * f);
-/* These routines for reading values "x" from / writing values to "file" ensure a
- * defined endianness and consistent error codes: return 0 on success and 1 on
+/* These routines for reading values "x" from / writing values to "file" ensure
+ * a defined endianness and consistent error codes: return 0 on success and 1 on
* fgetc()/fputc() failure.
*/
extern uint8_t read_uint8(FILE * file, uint8_t * x);