Async lookup attempt #3 - use OpenThreads instead - I'm going to kill off SGThread...

[simgear.git] / simgear / io / sg_file.hxx

diff --git a/simgear/io/sg_file.hxx b/simgear/io/sg_file.hxx
index 00d47143dc6ef47fc534e03082aec5dc208bfbda..7e5854c14ac9008bbd9be46d2f9de231cafe729c 100644 (file)
--- a/simgear/io/sg_file.hxx
+++ b/simgear/io/sg_file.hxx
@@ -1,8 +1,10 @@
-// sg_file.hxx -- File I/O routines
-//
+/** \file sg_file.hxx
+ * File I/O routines.
+ */
+
 // Written by Curtis Olson, started November 1999.
 //
-// Copyright (C) 1999  Curtis L. Olson - curt@flightgear.org
+// Copyright (C) 1999  Curtis L. Olson - http://www.flightgear.org/~curt
 //
 // This program is free software; you can redistribute it and/or
 // modify it under the terms of the GNU General Public License as
@@ -16,7 +18,7 @@
 //
 // 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 //
 // $Id$
 
@@ -24,35 +26,44 @@
 #ifndef _SG_FILE_HXX
 #define _SG_FILE_HXX
 
-
-#ifndef __cplusplus
-# error This library requires C++
-#endif
-
 #include <simgear/compiler.h>
 
 #include <string>
 
-#include <sys/types.h>         // for open(), read(), write(), close()
-#include <sys/stat.h>          // for open(), read(), write(), close()
-#include <fcntl.h>             // for open(), read(), write(), close()
-#if !defined( _MSC_VER )
-#  include <unistd.h>          // for open(), read(), write(), close()
-#endif
-
 #include "iochannel.hxx"
 
-FG_USING_STD(string);
-
 
+/**
+ * A file I/O class based on SGIOChannel.
+ */
 class SGFile : public SGIOChannel {
 
-    string file_name;
+    std::string file_name;
     int fp;
+    bool eof_flag;
+    // Number of repetitions to play. -1 means loop infinitely.
+    const int repeat;
+    int iteration;              // number of current repetition,
+                                // starting at 0
 
 public:
 
-    SGFile( const string& file );
+    /**
+     * Create an instance of SGFile.
+     * When calling the constructor you need to provide a file
+     * name. This file is not opened immediately, but instead will be
+     * opened when the open() method is called.
+     * @param file name of file to open
+     * @param repeat On eof restart at the beginning of the file
+     */
+    SGFile( const std::string& file, int repeat_ = 1 );
+
+    /**
+     * Create an SGFile from an existing, open file-descriptor
+     */
+    SGFile( int existingFd );
+
+    /** Destructor */
     ~SGFile();
 
     // open the file based on specified direction
@@ -73,7 +84,11 @@ public:
     // close file
     bool close();
 
-    inline string get_file_name() const { return file_name; }
+    /** @return the name of the file being manipulated. */
+    inline std::string get_file_name() const { return file_name; }
+
+    /** @return true of eof conditions exists */
+    inline bool eof() const { return eof_flag; };
 };