(mm-codepage-setup): New helper function.

[gnus] / lisp / qp.el

diff --git a/lisp/qp.el b/lisp/qp.el
index 9875a0b..7380294 100644 (file)
--- a/lisp/qp.el
+++ b/lisp/qp.el
@@ -1,6 +1,7 @@
 ;;; qp.el --- Quoted-Printable functions
 
-;; Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
+;; Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004,
+;;   2005 Free Software Foundation, Inc.
 
 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
 ;; Keywords: mail, extensions
@@ -19,8 +20,8 @@
 
 ;; You should have received a copy of the GNU General Public License
 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
-;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-;; Boston, MA 02111-1307, USA.
+;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+;; Boston, MA 02110-1301, USA.
 
 ;;; Commentary:
 
@@ -32,11 +33,21 @@
 (require 'mm-util)
 (eval-when-compile (defvar mm-use-ultra-safe-encoding))
 
+;;;###autoload
 (defun quoted-printable-decode-region (from to &optional coding-system)
   "Decode quoted-printable in the region between FROM and TO, per RFC 2045.
 If CODING-SYSTEM is non-nil, decode bytes into characters with that
-coding-system."
-  (interactive "r")
+coding-system.
+
+Interactively, you can supply the CODING-SYSTEM argument
+with \\[universal-coding-system-argument].
+
+The CODING-SYSTEM argument is a historical hangover and is deprecated.
+QP encodes raw bytes and should be decoded into raw bytes.  Decoding
+them into characters should be done separately."
+  (interactive
+   ;; Let the user determine the coding system with "C-x RET c".
+   (list (region-beginning) (region-end) coding-system-for-read))
   (unless (mm-coding-system-p coding-system) ; e.g. `ascii' from Gnus
     (setq coding-system nil))
   (save-excursion
@@ -58,15 +69,11 @@ coding-system."
          (cond ((eq (char-after (1+ (point))) ?\n)
                 (delete-char 2))
                ((looking-at "=[0-9A-F][0-9A-F]")
-                (let ((byte (string-to-int (buffer-substring (1+ (point))
+                (let ((byte (string-to-number (buffer-substring (1+ (point))
                                                              (+ 3 (point)))
                                            16)))
-                  (insert byte)
-                  (delete-char 3)
-                  ;; Why backward-char??? 
-                  ;;(unless (eq byte 61) ;; 61 is not ?= in XEmacs
-                  ;;  (backward-char))
-                  ))
+                  (mm-insert-byte byte 1)
+                  (delete-char 3)))
                (t
                 (message "Malformed quoted-printable text")
                 (forward-char)))))
@@ -75,8 +82,10 @@ coding-system."
 
 (defun quoted-printable-decode-string (string &optional coding-system)
   "Decode the quoted-printable encoded STRING and return the result.
-If CODING-SYSTEM is non-nil, decode the region with coding-system."
-  (with-temp-buffer
+If CODING-SYSTEM is non-nil, decode the region with coding-system.
+Use of CODING-SYSTEM is deprecated; this function should deal with
+raw bytes, and coding conversion should be done separately."
+  (mm-with-unibyte-buffer
     (insert string)
     (quoted-printable-decode-region (point-min) (point-max) coding-system)
     (buffer-string)))
@@ -97,21 +106,20 @@ encode lines starting with \"From\"."
     ;; Equivalent to "^\000-\007\013\015-\037\200-\377="
     (setq class "\010-\012\014\040-\074\076-\177"))
   (save-excursion
+    (goto-char from)
+    (if (re-search-forward (mm-string-to-multibyte "[^\x0-\x7f\x80-\xff]")
+                          to t)
+       (error "Multibyte character in QP encoding region"))
     (save-restriction
       (narrow-to-region from to)
-      ;; We can live with characters between 00-FF.
-      (goto-char (point-min))
-      (while (not (eobp))
-       (if (>= (char-after) 256)
-           (error "Multibyte character in QP encoding region"))
-       (forward-char))
       ;; Encode all the non-ascii and control characters.
       (goto-char (point-min))
       (while (and (skip-chars-forward class)
                  (not (eobp)))
        (insert
         (prog1
-            (format "=%02X" (char-after))
+            ;; To unibyte in case of Emacs 22 eight-bit.
+            (format "=%02X" (mm-multibyte-char-to-unibyte (char-after)))
           (delete-char 1))))
       ;; Encode white space at the end of lines.
       (goto-char (point-min))
@@ -126,7 +134,7 @@ encode lines starting with \"From\"."
             (and (boundp 'mm-use-ultra-safe-encoding)
                  mm-use-ultra-safe-encoding)))
        (when (or fold mm-use-ultra-safe-encoding)
-         (let ((tab-width 1))  ; HTAB is one character.
+         (let ((tab-width 1))          ; HTAB is one character.
            (goto-char (point-min))
            (while (not (eobp))
              ;; In ultra-safe mode, encode "From " at the beginning
@@ -135,7 +143,7 @@ encode lines starting with \"From\"."
                (if (looking-at "From ")
                    (replace-match "From=20" nil t)
                  (if (looking-at "-")
-                       (replace-match "=2D" nil t))))
+                     (replace-match "=2D" nil t))))
              (end-of-line)
              ;; Fold long lines.
              (while (> (current-column) 76) ; tab-width must be 1.
@@ -156,4 +164,5 @@ encode lines starting with \"From\"."
 
 (provide 'qp)
 
+;;; arch-tag: db89e52a-e4a1-4b69-926f-f434f04216ba
 ;;; qp.el ends here