*** empty log message ***

[bpt/guile.git] / libguile / fports.h

diff --git a/libguile/fports.h b/libguile/fports.h
index 1323759..3d970d9 100644 (file)
--- a/libguile/fports.h
+++ b/libguile/fports.h
@@ -2,7 +2,7 @@
 
 #ifndef FPORTSH
 #define FPORTSH
-/*     Copyright (C) 1995,1996,1997 Free Software Foundation, Inc.
+/*     Copyright (C) 1995,1996,1997,1998,1999, 2000 Free Software Foundation, Inc.
  * 
  * 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
@@ -42,6 +42,9 @@
  * If you write modifications of your own for GUILE, it is your choice
  * whether to permit this exception to apply to your modifications.
  * If you do not wish that, delete this exception notice.  */
+
+/* Software engineering face-lift by Greg J. Badros, 11-Dec-1999,
+   gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */
 \f
 
 #include "libguile/__scm.h"
@@ -50,15 +53,37 @@
 
 \f
 
-extern scm_ptobfuns scm_fptob;
-extern scm_ptobfuns scm_pipob;
+/* struct allocated for each buffered FPORT.  */
+struct scm_fport {
+  int fdes;                    /* file descriptor.  */
+};
 
-\f
+extern scm_bits_t scm_tc16_fport;
+
+#define SCM_FSTREAM(x) ((struct scm_fport *) SCM_STREAM (x))
+#define SCM_FPORT_FDES(x) (SCM_FSTREAM (x)->fdes)
+
+#define SCM_FPORTP(x) (!SCM_IMP (x) && (SCM_TYP16 (x) == scm_tc16_fport))
+#define SCM_OPFPORTP(x) (SCM_FPORTP (x) && (SCM_CELL_WORD_0 (x) & SCM_OPN))
+#define SCM_OPINFPORTP(x) (SCM_OPFPORTP (x) && (SCM_CELL_WORD_0 (x) & SCM_RDNG))
+#define SCM_OPOUTFPORTP(x) (SCM_OPFPORTP (x) && (SCM_CELL_WORD_0 (x) & SCM_WRTNG))
 
-extern SCM scm_setbuf0 SCM_P ((SCM port));
-extern void scm_evict_ports SCM_P ((int fd));
-extern SCM scm_open_file SCM_P ((SCM filename, SCM modes));
-extern SCM scm_stdio_to_port SCM_P ((FILE *file, char *name, char *modes));
-extern void scm_init_fports SCM_P ((void));
+/* test whether fdes supports random access.  */
+#define SCM_FDES_RANDOM_P(fdes) ((lseek (fdes, 0, SEEK_CUR) == -1) ? 0 : 1)
+
+\f
+extern SCM scm_setbuf0 (SCM port);
+extern SCM scm_setvbuf (SCM port, SCM mode, SCM size);
+extern void scm_evict_ports (int fd);
+extern SCM scm_open_file (SCM filename, SCM modes);
+extern SCM scm_fdes_to_port (int fdes, char *mode, SCM name);
+extern SCM scm_file_port_p (SCM obj);
+extern void scm_init_fports (void);
 
 #endif  /* FPORTSH */
+
+/*
+  Local Variables:
+  c-file-style: "gnu"
+  End:
+*/