r9687: new routines

[kmrcl.git] / io.lisp

diff --git a/io.lisp b/io.lisp
index 68a6bc23cd9a8ab956d6f19ebc3db815d0870f61..db94854156e6dbd0bae9052a5e14746bb9857f7b 100644 (file)
--- a/io.lisp
+++ b/io.lisp
@@ -9,7 +9,7 @@
 ;;;;
 ;;;; $Id$
 ;;;;
-;;;; This file, part of KMRCL, is Copyright (c) 2002 by Kevin M. Rosenberg
+;;;; This file, part of KMRCL, is Copyright (c) 2002-2003 by Kevin M. Rosenberg
 ;;;;
 ;;;; KMRCL users are granted the rights to distribute and use this software
 ;;;; as governed by the terms of the Lisp Lesser GNU Public License
@@ -21,33 +21,41 @@
 (defun print-file-contents (file &optional (strm *standard-output*))
   "Opens a reads a file. Returns the contents as a single string"
   (when (probe-file file)
-    (with-open-file (in file :direction :input)
-      (let ((eof (gensym)))                
-       (do ((line (read-line in nil eof) 
-                  (read-line in nil eof)))
-           ((eq line eof))
-         (format strm "~A~%" line))))))
-
+    (let ((eof (cons 'eof nil)))
+      (with-open-file (in file :direction :input)
+        (do ((line (read-line in nil eof) 
+                   (read-line in nil eof)))
+            ((eq line eof))
+          (write-string line strm)
+          (write-char #\newline strm))))))
+
+(defun read-stream-to-string (in)
+  (with-output-to-string (out)
+    (let ((eof (gensym)))                  
+      (do ((line (read-line in nil eof) 
+                (read-line in nil eof)))
+         ((eq line eof))
+       (format out "~A~%" line)))))
+       
 (defun read-file-to-string (file)
   "Opens a reads a file. Returns the contents as a single string"
   (with-output-to-string (out)
     (with-open-file (in file :direction :input)
-      (let ((eof (gensym)))                
-       (do ((line (read-line in nil eof) 
-                  (read-line in nil eof)))
-           ((eq line eof))
-         (format out "~A~%" line))))))
-
+      (read-stream-to-string in))))
+
+(defun read-stream-to-strings (in)
+  (let ((lines '())
+       (eof (gensym)))             
+    (do ((line (read-line in nil eof) 
+              (read-line in nil eof)))
+       ((eq line eof))
+      (push line lines))
+    (nreverse lines)))
+    
 (defun read-file-to-strings (file)
   "Opens a reads a file. Returns the contents as a list of strings"
-  (let ((lines '()))
-    (with-open-file (in file :direction :input)
-      (let ((eof (gensym)))                
-       (do ((line (read-line in nil eof) 
-                  (read-line in nil eof)))
-           ((eq line eof))
-         (push line lines)))
-      (nreverse lines))))
+  (with-open-file (in file :direction :input)
+    (read-stream-to-strings in)))
 
 (defun file-subst (old new file1 file2)
   (with-open-file (in file1 :direction :input)
@@ -191,40 +199,6 @@
     (open-device-stream #p"/dev/null" :output))  
   )
 
-(defun un-unspecific (value)
-  "Convert :UNSPECIFIC to NIL."
-  (if (eq value :unspecific) nil value))
-
-(defun canonicalize-directory-name (filename)
-  (flet ((un-unspecific (value)
-          (if (eq value :unspecific) nil value)))
-    (let* ((path (pathname filename))
-          (name (un-unspecific (pathname-name path)))
-          (type (un-unspecific (pathname-type path)))
-          (new-dir
-           (cond ((and name type) (list (concatenate 'string name "." type)))
-                 (name (list name))
-                 (type (list type))
-                 (t nil))))
-      (if new-dir
-         (make-pathname
-          :directory (append (un-unspecific (pathname-directory path))
-                             new-dir)
-                   :name nil :type nil :version nil :defaults path)
-         path))))
-  
-(defun probe-directory (filename)
-  (let ((path (canonicalize-directory-name filename)))
-    #+allegro (excl:probe-directory path)
-    #+clisp (values
-            (ignore-errors
-              (#+lisp=cl ext:probe-directory #-lisp=cl lisp:probe-directory
-                         path)))
-    #+(or cmu scl) (eq :directory (unix:unix-file-kind (namestring path)))
-    #+lispworks (lw:file-directory-p path)
-    #+sbcl (eq :directory (sb-unix:unix-file-kind (namestring path)))
-    #-(or allegro clisp cmu lispworks sbcl scl)
-    (probe-file path)))
 
 (defun directory-tree (filename)
   "Returns a tree of pathnames for sub-directories of a directory"