WIP for SAGA engine.

 o text formatting is not consistent with rules, just indent utility is too
   dumb for that
 o it does not use OSystem, i.e. it runs on direct SDL calls
 o it may not even compile on your box
 o if you enable it, expect zillions of warnings
 o no sound

Now it runs ITE intro as reinherit did

svn-id: r13564

1 files changed, 63 insertions, 0 deletions

diff --git a/saga/ys_file.cpp b/saga/ys_file.cpp
new file mode 100644
index 0000000000..39cb84cff0
--- /dev/null
+++ b/saga/ys_file.cpp
@@ -0,0 +1,63 @@
+/* ScummVM - Scumm Interpreter
+ * Copyright (C) 2004 The ScummVM project
+ *
+ * The ReInherit Engine is (C)2000-2003 by Daniel Balsom.
+ *
+ * This program 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 2
+ * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * $Header$
+ *
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+
+#include "yslib.h"
+
+namespace Saga {
+
+int ys_get_filesize(FILE * file_p, unsigned long *len_p, int *p_errno)
+/*--------------------------------------------------------------------------*\
+ * Returns the 'size' of the specified file. The file must be opened in 
+ *  binary mode. Note that not all operating systems support determing the 
+ *  exact end of a binary file stream, so this function is limited in 
+ *  portability.
+\*--------------------------------------------------------------------------*/
+{
+	long f_pos;
+	long f_len;
+
+	f_pos = ftell(file_p);
+	if (f_pos == -1) {
+		*p_errno = errno;
+		return YS_E_FAILURE;
+	}
+
+	fseek(file_p, 0, SEEK_END);
+
+	f_len = ftell(file_p);
+	if (f_pos == -1) {
+		*p_errno = errno;
+		return YS_E_FAILURE;
+	}
+
+	fseek(file_p, f_pos, SEEK_SET);
+
+	*len_p = (unsigned long)f_len;
+
+	return YS_E_SUCCESS;;
+}
+
+} // End of namespace Saga