* Separate the handling of OPEN flags between ports and directories.

NEWS

@@ -393,6 +393,10 @@ Use these instead of SCM_SETCHARS.
 
 Use instead of SCM_COERCE_SUBSTR.
 
+** New macros:  SCM_DIR_OPEN_P, SCM_DIR_FLAG_OPEN
+
+For directory objects, use these instead of SCM_OPDIRP and SCM_OPN.
+
 ** Deprecated macros:  SCM_OUTOFRANGE, SCM_NALLOC, SCM_HUP_SIGNAL, 
 SCM_INT_SIGNAL, SCM_FPE_SIGNAL, SCM_BUS_SIGNAL, SCM_SEGV_SIGNAL, 
 SCM_ALRM_SIGNAL, SCM_GC_SIGNAL, SCM_TICK_SIGNAL, SCM_SIG_ORD, 
@@ -403,7 +407,8 @@ SCM_VALIDATE_NULLORROSTRING_COPY, SCM_ROLENGTH, SCM_LENGTH, SCM_HUGE_LENGTH,
 SCM_SUBSTRP, SCM_SUBSTR_STR, SCM_SUBSTR_OFFSET, SCM_COERCE_SUBSTR,
 SCM_ROSTRINGP, SCM_RWSTRINGP, SCM_VALIDATE_RWSTRING, SCM_ROCHARS,
 SCM_ROUCHARS, SCM_SETLENGTH, SCM_SETCHARS, SCM_LENGTH_MAX, SCM_GC8MARKP,
-SCM_SETGC8MARK, SCM_CLRGC8MARK, SCM_GCTYP16, SCM_GCCDR, SCM_SUBR_DOC
+SCM_SETGC8MARK, SCM_CLRGC8MARK, SCM_GCTYP16, SCM_GCCDR, SCM_SUBR_DOC,
+SCM_OPDIRP, SCM_VALIDATE_OPDIR
 
 Use SCM_ASSERT_RANGE or SCM_VALIDATE_XXX_RANGE instead of SCM_OUTOFRANGE.
 Use scm_memory_error instead of SCM_NALLOC.
@@ -427,6 +432,7 @@ Use SCM_SETGCMARK instead of SCM_SETGC8MARK.
 Use SCM_CLRGCMARK instead of SCM_CLRGC8MARK.
 Use SCM_TYP16 instead of SCM_GCTYP16.
 Use SCM_CDR instead of SCM_GCCDR.
+Use SCM_DIR_OPEN_P instead of SCM_OPDIRP.
 
 ** Removed function:  scm_struct_init
 

RELEASE

@@ -54,7 +54,7 @@ In release 1.6:
   SCM_COERCE_SUBSTR, SCM_ROSTRINGP, SCM_RWSTRINGP, SCM_VALIDATE_RWSTRING,
   SCM_ROCHARS, SCM_ROUCHARS, SCM_SETLENGTH, SCM_SETCHARS, SCM_LENGTH_MAX,
   SCM_GC8MARKP, SCM_SETGC8MARK, SCM_CLRGC8MARK, SCM_GCTYP16, SCM_GCCDR,
-  SCM_SUBR_DOC
+  SCM_SUBR_DOC, SCM_OPDIRP, SCM_VALIDATE_OPDIR
 - remove scm_vector_set_length_x
 - remove function scm_call_catching_errors
   (replaced by catch functions from throw.[ch])

libguile/ChangeLog

@@ -1,3 +1,21 @@
+2001-01-24  Dirk Herrmann  <D.Herrmann@tu-bs.de>
+
+	* filesys.h (SCM_DIR_FLAG_OPEN, SCM_DIR_OPEN_P):  Added.
+
+	(SCM_OPDIRP):  Deprecated.
+
+	* filesys.c (scm_opendir):  Use SCM_DIR_FLAG_OPEN instead of
+	SCM_OPN.
+
+	(scm_readdir, scm_rewinddir):  Don't use SCM_VALIDATE_OPDIR.
+	Instead, give an explicit error message in case the directory is
+	closed.
+
+	(scm_closedir, scm_dir_print):  Rewritten to use SCM_DIR_OPEN_P
+	instead of SCM_OPENP and SCM_CLOSEDP.
+
+	* validate.h (SCM_VALIDATE_OPDIR):  Deprecated.
+
 2001-01-22  Dirk Herrmann  <D.Herrmann@tu-bs.de>
 
 	* eval.c (inner_eval, scm_eval):  Move all real functionality into

libguile/filesys.c

@@ -673,21 +673,24 @@ SCM_DEFINE (scm_rmdir, "rmdir", 1, 0, 0,
 #endif
 
 
+
 /* {Examining Directories}
  */
 
 scm_bits_t scm_tc16_dir;
 
+
 SCM_DEFINE (scm_directory_stream_p, "directory-stream?", 1, 0, 0, 
             (SCM obj),
 	    "Returns a boolean indicating whether @var{object} is a directory stream\n"
 	    "as returned by @code{opendir}.")
 #define FUNC_NAME s_scm_directory_stream_p
 {
-  return SCM_BOOL(SCM_DIRP (obj));
+  return SCM_BOOL (SCM_DIRP (obj));
 }
 #undef FUNC_NAME
 
+
 SCM_DEFINE (scm_opendir, "opendir", 1, 0, 0, 
             (SCM dirname),
 	    "Open the directory specified by @var{path} and return a directory\n"
@@ -700,7 +703,7 @@ SCM_DEFINE (scm_opendir, "opendir", 1, 0, 0,
   SCM_SYSCALL (ds = opendir (SCM_STRING_CHARS (dirname)));
   if (ds == NULL)
     SCM_SYSERROR;
-  SCM_RETURN_NEWSMOB (scm_tc16_dir | SCM_OPN, ds);
+  SCM_RETURN_NEWSMOB (scm_tc16_dir | SCM_DIR_FLAG_OPEN, ds);
 }
 #undef FUNC_NAME
 
@@ -713,61 +716,68 @@ SCM_DEFINE (scm_readdir, "readdir", 1, 0, 0,
 #define FUNC_NAME s_scm_readdir
 {
   struct dirent *rdent;
-  SCM_VALIDATE_OPDIR (1,port);
+
+  SCM_VALIDATE_DIR (1, port);
+  if (!SCM_DIR_OPEN_P (port))
+    SCM_MISC_ERROR ("Directory ~S is not open.", SCM_LIST1 (port));
+
   errno = 0;
   SCM_SYSCALL (rdent = readdir ((DIR *) SCM_CELL_WORD_1 (port)));
   if (errno != 0)
     SCM_SYSERROR;
+
   return (rdent ? scm_makfromstr (rdent->d_name, NAMLEN (rdent), 0)
 	  : SCM_EOF_VAL);
 }
 #undef FUNC_NAME
 
 
-
 SCM_DEFINE (scm_rewinddir, "rewinddir", 1, 0, 0, 
             (SCM port),
 	    "Reset the directory port @var{stream} so that the next call to\n"
 	    "@code{readdir} will return the first directory entry.")
 #define FUNC_NAME s_scm_rewinddir
 {
-  SCM_VALIDATE_OPDIR (1,port);
+  SCM_VALIDATE_DIR (1, port);
+  if (!SCM_DIR_OPEN_P (port))
+    SCM_MISC_ERROR ("Directory ~S is not open.", SCM_LIST1 (port));
+
   rewinddir ((DIR *) SCM_CELL_WORD_1 (port));
+
   return SCM_UNSPECIFIED;
 }
 #undef FUNC_NAME
 
 
-
 SCM_DEFINE (scm_closedir, "closedir", 1, 0, 0, 
             (SCM port),
 	    "Close the directory stream @var{stream}.\n"
 	    "The return value is unspecified.")
 #define FUNC_NAME s_scm_closedir
 {
-  int sts;
+  SCM_VALIDATE_DIR (1, port);
 
-  SCM_VALIDATE_DIR (1,port);
+  if (SCM_DIR_OPEN_P (port))
-  if (SCM_CLOSEDP (port))
     {
-      return SCM_UNSPECIFIED;
+      int sts;
+
+      SCM_SYSCALL (sts = closedir ((DIR *) SCM_CELL_WORD_1 (port)));
+      if (sts != 0)
+	SCM_SYSERROR;
+
+      SCM_SET_CELL_WORD_0 (port, scm_tc16_dir);
     }
-  SCM_SYSCALL (sts = closedir ((DIR *) SCM_CELL_WORD_1 (port)));
+
-  if (sts != 0)
-    SCM_SYSERROR;
-  SCM_SET_CELL_WORD_0 (port, scm_tc16_dir);
   return SCM_UNSPECIFIED;
 }
 #undef FUNC_NAME
 
 
-
-
 static int 
 scm_dir_print (SCM exp, SCM port, scm_print_state *pstate)
 {
   scm_puts ("#<", port);
-  if (SCM_CLOSEDP (exp))
+  if (!SCM_DIR_OPEN_P (exp))
     scm_puts ("closed: ", port);
   scm_puts ("directory stream ", port);
   scm_intprint (SCM_CELL_WORD_1 (exp), 16, port);
@@ -779,7 +789,7 @@ scm_dir_print (SCM exp, SCM port, scm_print_state *pstate)
 static scm_sizet 
 scm_dir_free (SCM p)
 {
-  if (SCM_OPENP (p))
+  if (SCM_DIR_OPEN_P (p))
     closedir ((DIR *) SCM_CELL_WORD_1 (p));
   return 0;
 }

libguile/filesys.h

@@ -53,8 +53,11 @@
 
 
 extern scm_bits_t scm_tc16_dir;
+
+#define SCM_DIR_FLAG_OPEN (1L << 16)
+
 #define SCM_DIRP(x) (!SCM_IMP (x) && (SCM_TYP16 (x) == scm_tc16_dir))
-#define SCM_OPDIRP(x) (!SCM_IMP (x) && (SCM_CELL_WORD_0 (x) == (scm_tc16_dir | SCM_OPN)))
+#define SCM_DIR_OPEN_P(x) (SCM_CELL_WORD_0 (x) & SCM_DIR_FLAG_OPEN)
 
 
 
@@ -90,6 +93,14 @@ extern SCM scm_basename (SCM filename, SCM suffix);
 
 extern void scm_init_filesys (void);
 
+
+
+#if (SCM_DEBUG_DEPRECATED == 0)
+
+#define SCM_OPDIRP(x) (SCM_DIRP (x) && (SCM_DIR_OPEN_P (x)))
+
+#endif  /* SCM_DEBUG_DEPRECATED == 0 */
+
 #endif  /* FILESYSH */
 
 /*

libguile/validate.h

@@ -1,4 +1,4 @@
-/* $Id: validate.h,v 1.24 2001-01-08 23:10:06 ghouston Exp $ */
+/* $Id: validate.h,v 1.25 2001-01-24 00:02:43 dirk Exp $ */
 /*	Copyright (C) 1999, 2000 Free Software Foundation, Inc.
  *
  * This program is free software; you can redistribute it and/or modify
@@ -337,8 +337,6 @@
 
 #define SCM_VALIDATE_RGXP(pos, a) SCM_MAKE_VALIDATE (pos, a, RGXP)
 
-#define SCM_VALIDATE_OPDIR(pos, port) SCM_MAKE_VALIDATE (pos, port, OPDIRP)
-
 #define SCM_VALIDATE_DIR(pos, port) SCM_MAKE_VALIDATE (pos, port, DIRP)
 
 #define SCM_VALIDATE_PORT(pos, port) SCM_MAKE_VALIDATE (pos, port, PORTP)
@@ -437,6 +435,8 @@
       scm_misc_error (FUNC_NAME, "argument is a read-only string", str); \
   } while (0)
 
+#define SCM_VALIDATE_OPDIR(pos, port) SCM_MAKE_VALIDATE (pos, port, OPDIRP)
+
 #endif  /* SCM_DEBUG_DEPRECATED == 0 */
 
 #endif