(insert-file-contents-literally-treats-binary): New facility [moved

from pces-xfc.el].
(insert-file-contents-literally-treats-file-name-handler): Likewise.
(insert-file-contents-as-binary): Define as an alias for
`insert-file-contents-literally' if it is not broken.

diff --git a/pces-20.el b/pces-20.el
index 7f57a68..51335a7 100644 (file)
--- a/pces-20.el
+++ b/pces-20.el
@@ -1,5 +1,5 @@
 ;;; -*-byte-compile-dynamic: t;-*-
-;;; pces-20.el --- pces submodule for Emacs 20 and XEmacs-mule
+;;; pces-20.el --- pces submodule for Emacs 20 and XEmacs with coding-system
 
 ;; Copyright (C) 1997,1998,1999 Free Software Foundation, Inc.
 
@@ -30,6 +30,12 @@
 
 ;;; Code:
 
+;; (defun-maybe-cond multibyte-string-p (object)
+;;   "Return t if OBJECT is a multibyte string."
+;;   ((featurep 'mule) (stringp object))
+;;   (t                nil))
+
+
 ;;; @ without code-conversion
 ;;;
 
@@ -54,9 +60,74 @@
        jka-compr-compression-info-list jam-zcat-filename-list)
     (write-region start end filename append visit lockname)))
 
-;; `insert-file-contents-literally' of Emacs 20 supports
-;; `file-name-handler-alist'.
-(defalias 'insert-file-contents-as-binary 'insert-file-contents-literally)
+(require 'broken)
+
+(broken-facility insert-file-contents-literally-treats-binary
+  "Function `insert-file-contents-literally' decodes text."
+  (let* ((str "\r\n")
+        (coding-system-for-write 'binary)
+        (coding-system-for-read 'raw-text-dos)
+         ;; (default-enable-multibyte-characters (multibyte-string-p str))
+        )
+    (with-temp-buffer
+      (insert str)
+      (write-region (point-min)(point-max) "literal-test-file")
+      )
+    (string=
+     (with-temp-buffer
+       (let (file-name-handler-alist)
+        (insert-file-contents-literally "literal-test-file")
+        )
+       (buffer-string)
+       )
+     str)))
+
+(broken-facility insert-file-contents-literally-treats-file-name-handler
+  "Function `insert-file-contents' doesn't call file-name-handler."
+  (let (called)
+    (with-temp-buffer
+      (let ((file-name-handler-alist
+            '(("literal-test-file" . (lambda (operation &rest args)
+                                       (setq called t)
+                                       (let (file-name-handler-alist)
+                                         (apply operation args)
+                                         ))))))
+       (insert-file-contents-literally "literal-test-file")
+       )
+      (delete-file "literal-test-file")
+      )
+    called))
+
+(static-if
+    (or (broken-p 'insert-file-contents-literally-treats-binary)
+       (broken-p 'insert-file-contents-literally-treats-file-name-handler))
+    (defun insert-file-contents-as-binary (filename
+                                          &optional visit beg end replace)
+      "Like `insert-file-contents', but only reads in the file literally.
+A buffer may be modified in several ways after reading into the buffer,
+to Emacs features such as format decoding, character code
+conversion, find-file-hooks, automatic uncompression, etc.
+
+This function ensures that none of these modifications will take place."
+      (let ((format-alist nil)
+           (after-insert-file-functions nil)
+           (coding-system-for-read 'binary)
+           (coding-system-for-write 'binary)
+           (jka-compr-compression-info-list nil)
+           (jam-zcat-filename-list nil)
+           (find-buffer-file-type-function
+            (if (fboundp 'find-buffer-file-type)
+                (symbol-function 'find-buffer-file-type)
+              nil)))
+       (unwind-protect
+           (progn
+             (fset 'find-buffer-file-type (lambda (filename) t))
+             (insert-file-contents filename visit beg end replace))
+         (if find-buffer-file-type-function
+             (fset 'find-buffer-file-type find-buffer-file-type-function)
+           (fmakunbound 'find-buffer-file-type)))))
+  (defalias 'insert-file-contents-as-binary 'insert-file-contents-literally)
+  )
 
 (defun insert-file-contents-as-raw-text (filename
                                         &optional visit beg end replace)