+++ /dev/null
-;;; mailcap.el --- MIME media types configuration
-;; Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
-
-;; Author: William M. Perry <wmperry@aventail.com>
-;; Lars Magne Ingebrigtsen <larsi@gnus.org>
-;; Keywords: news, mail, multimedia
-
-;; This file is part of GNU Emacs.
-
-;; GNU Emacs is free software; you can redistribute it and/or modify
-;; it under the terms of the GNU General Public License as published by
-;; the Free Software Foundation; either version 2, or (at your option)
-;; any later version.
-
-;; GNU Emacs is distributed in the hope that it will be useful,
-;; but WITHOUT ANY WARRANTY; without even the implied warranty of
-;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-;; GNU General Public License for more details.
-
-;; 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.
-
-;;; Commentary:
-
-;; Provides configuration of MIME media types from directly from Lisp
-;; and via the usual mailcap mechanism (RFC 1524). Deals with
-;; mime.types similarly.
-
-;;; Code:
-
-(eval-when-compile (require 'cl))
-(require 'mail-parse)
-(require 'mm-util)
-
-(defgroup mailcap nil
- "Definition of viewers for MIME types."
- :version "21.1"
- :group 'mime)
-
-(defvar mailcap-parse-args-syntax-table
- (let ((table (copy-syntax-table emacs-lisp-mode-syntax-table)))
- (modify-syntax-entry ?' "\"" table)
- (modify-syntax-entry ?` "\"" table)
- (modify-syntax-entry ?{ "(" table)
- (modify-syntax-entry ?} ")" table)
- table)
- "A syntax table for parsing sgml attributes.")
-
-;; Postpone using defcustom for this as it's so big and we essentially
-;; have to have two copies of the data around then. Perhaps just
-;; customize the Lisp viewers and rely on the normal configuration
-;; files for the rest? -- fx
-(defvar mailcap-mime-data
- '(("application"
- ("vnd.ms-excel"
- (viewer . "gnumeric %s")
- (test . (getenv "DISPLAY"))
- (type . "application/vnd.ms-excel"))
- ("x-x509-ca-cert"
- (viewer . ssl-view-site-cert)
- (test . (fboundp 'ssl-view-site-cert))
- (type . "application/x-x509-ca-cert"))
- ("x-x509-user-cert"
- (viewer . ssl-view-user-cert)
- (test . (fboundp 'ssl-view-user-cert))
- (type . "application/x-x509-user-cert"))
- ("octet-stream"
- (viewer . mailcap-save-binary-file)
- (non-viewer . t)
- (type . "application/octet-stream"))
-;;; XEmacs says `ns' device-type not implemented.
-;; ("dvi"
-;; (viewer . "open %s")
-;; (type . "application/dvi")
-;; (test . (eq (mm-device-type) 'ns)))
- ("dvi"
- (viewer . "xdvi %s")
- (test . (eq (mm-device-type) 'x))
- ("needsx11")
- (type . "application/dvi"))
- ("dvi"
- (viewer . "dvitty %s")
- (test . (not (getenv "DISPLAY")))
- (type . "application/dvi"))
- ("emacs-lisp"
- (viewer . mailcap-maybe-eval)
- (type . "application/emacs-lisp"))
- ("x-tar"
- (viewer . mailcap-save-binary-file)
- (non-viewer . t)
- (type . "application/x-tar"))
- ("x-latex"
- (viewer . tex-mode)
- (test . (fboundp 'tex-mode))
- (type . "application/x-latex"))
- ("x-tex"
- (viewer . tex-mode)
- (test . (fboundp 'tex-mode))
- (type . "application/x-tex"))
- ("latex"
- (viewer . tex-mode)
- (test . (fboundp 'tex-mode))
- (type . "application/latex"))
- ("tex"
- (viewer . tex-mode)
- (test . (fboundp 'tex-mode))
- (type . "application/tex"))
- ("texinfo"
- (viewer . texinfo-mode)
- (test . (fboundp 'texinfo-mode))
- (type . "application/tex"))
- ("zip"
- (viewer . mailcap-save-binary-file)
- (non-viewer . t)
- (type . "application/zip")
- ("copiousoutput"))
- ;; Prefer free viewers.
- ("pdf"
- (viewer . "gv %s")
- (type . "application/pdf")
- (test . window-system))
- ("pdf"
- (viewer . "xpdf %s")
- (type . "application/pdf")
- (test . (eq (mm-device-type) 'x)))
- ("pdf"
- (viewer . "acroread %s")
- (type . "application/pdf"))
-;;; XEmacs says `ns' device-type not implemented.
-;; ("postscript"
-;; (viewer . "open %s")
-;; (type . "application/postscript")
-;; (test . (eq (mm-device-type) 'ns)))
- ("postscript"
- (viewer . "gv -safer %s")
- (type . "application/postscript")
- (test . window-system)
- ("needsx11"))
- ("postscript"
- (viewer . "ghostview -dSAFER %s")
- (type . "application/postscript")
- (test . (eq (mm-device-type) 'x))
- ("needsx11"))
- ("postscript"
- (viewer . "ps2ascii %s")
- (type . "application/postscript")
- (test . (not (getenv "DISPLAY")))
- ("copiousoutput"))
- ("sieve"
- (viewer . sieve-mode)
- (test . (fboundp 'sieve-mode))
- (type . "application/sieve")))
- ("audio"
- ("x-mpeg"
- (viewer . "maplay %s")
- (type . "audio/x-mpeg"))
- (".*"
- (viewer . "showaudio")
- (type . "audio/*")))
- ("message"
- ("rfc-*822"
- (viewer . mm-view-message)
- (test . (and (featurep 'gnus)
- (gnus-alive-p)))
- (type . "message/rfc822"))
- ("rfc-*822"
- (viewer . vm-mode)
- (test . (fboundp 'vm-mode))
- (type . "message/rfc822"))
- ("rfc-*822"
- (viewer . w3-mode)
- (test . (fboundp 'w3-mode))
- (type . "message/rfc822"))
- ("rfc-*822"
- (viewer . view-mode)
- (type . "message/rfc822")))
- ("image"
- ("x-xwd"
- (viewer . "xwud -in %s")
- (type . "image/x-xwd")
- ("compose" . "xwd -frame > %s")
- (test . (eq (mm-device-type) 'x))
- ("needsx11"))
- ("x11-dump"
- (viewer . "xwud -in %s")
- (type . "image/x-xwd")
- ("compose" . "xwd -frame > %s")
- (test . (eq (mm-device-type) 'x))
- ("needsx11"))
- ("windowdump"
- (viewer . "xwud -in %s")
- (type . "image/x-xwd")
- ("compose" . "xwd -frame > %s")
- (test . (eq (mm-device-type) 'x))
- ("needsx11"))
-;;; XEmacs says `ns' device-type not implemented.
-;; (".*"
-;; (viewer . "aopen %s")
-;; (type . "image/*")
-;; (test . (eq (mm-device-type) 'ns)))
- (".*"
- (viewer . "display %s")
- (type . "image/*")
- (test . (eq (mm-device-type) 'x))
- ("needsx11"))
- (".*"
- (viewer . "ee %s")
- (type . "image/*")
- (test . (eq (mm-device-type) 'x))
- ("needsx11")))
- ("text"
- ("plain"
- (viewer . w3-mode)
- (test . (fboundp 'w3-mode))
- (type . "text/plain"))
- ("plain"
- (viewer . view-mode)
- (test . (fboundp 'view-mode))
- (type . "text/plain"))
- ("plain"
- (viewer . fundamental-mode)
- (type . "text/plain"))
- ("enriched"
- (viewer . enriched-decode-region)
- (test . (fboundp 'enriched-decode))
- (type . "text/enriched"))
- ("html"
- (viewer . mm-w3-prepare-buffer)
- (test . (fboundp 'w3-prepare-buffer))
- (type . "text/html")))
- ("video"
- ("mpeg"
- (viewer . "mpeg_play %s")
- (type . "video/mpeg")
- (test . (eq (mm-device-type) 'x))
- ("needsx11")))
- ("x-world"
- ("x-vrml"
- (viewer . "webspace -remote %s -URL %u")
- (type . "x-world/x-vrml")
- ("description"
- "VRML document")))
- ("archive"
- ("tar"
- (viewer . tar-mode)
- (type . "archive/tar")
- (test . (fboundp 'tar-mode)))))
- "The mailcap structure is an assoc list of assoc lists.
-1st assoc list is keyed on the major content-type
-2nd assoc list is keyed on the minor content-type (which can be a regexp)
-
-Which looks like:
------------------
- ((\"application\"
- (\"postscript\" . <info>))
- (\"text\"
- (\"plain\" . <info>)))
-
-Where <info> is another assoc list of the various information
-related to the mailcap RFC 1524. This is keyed on the lowercase
-attribute name (viewer, test, etc). This looks like:
- ((viewer . VIEWERINFO)
- (test . TESTINFO)
- (xxxx . \"STRING\")
- FLAG)
-
-Where VIEWERINFO specifies how the content-type is viewed. Can be
-a string, in which case it is run through a shell, with
-appropriate parameters, or a symbol, in which case the symbol is
-`funcall'ed, with the buffer as an argument.
-
-TESTINFO is a test for the viewer's applicability, or nil. If nil, it
-means the viewer is always valid. If it is a Lisp function, it is
-called with a list of items from any extra fields from the
-Content-Type header as argument to return a boolean value for the
-validity. Otherwise, if it is a non-function Lisp symbol or list
-whose car is a symbol, it is `eval'led to yield the validity. If it
-is a string or list of strings, it represents a shell command to run
-to return a true or false shell value for the validity.")
-
-(defcustom mailcap-download-directory nil
- "*Directory to which `mailcap-save-binary-file' downloads files by default.
-Nil means your home directory."
- :type '(choice (const :tag "Home directory" nil)
- directory)
- :group 'mailcap)
-
-(defvar mailcap-poor-system-types
- '(ms-dos ms-windows windows-nt win32 w32 mswindows)
- "Systems that don't have a Unix-like directory hierarchy.")
-
-;;;
-;;; Utility functions
-;;;
-
-(defun mailcap-save-binary-file ()
- (goto-char (point-min))
- (unwind-protect
- (let ((file (read-file-name
- "Filename to save as: "
- (or mailcap-download-directory "~/")))
- (require-final-newline nil))
- (write-region (point-min) (point-max) file))
- (kill-buffer (current-buffer))))
-
-(defvar mailcap-maybe-eval-warning
- "*** WARNING ***
-
-This MIME part contains untrusted and possibly harmful content.
-If you evaluate the Emacs Lisp code contained in it, a lot of nasty
-things can happen. Please examine the code very carefully before you
-instruct Emacs to evaluate it. You can browse the buffer containing
-the code using \\[scroll-other-window].
-
-If you are unsure what to do, please answer \"no\"."
- "Text of warning message displayed by `mailcap-maybe-eval'.
-Make sure that this text consists only of few text lines. Otherwise,
-Gnus might fail to display all of it.")
-
-(defun mailcap-maybe-eval ()
- "Maybe evaluate a buffer of Emacs Lisp code."
- (let ((lisp-buffer (current-buffer)))
- (goto-char (point-min))
- (when
- (save-window-excursion
- (delete-other-windows)
- (let ((buffer (get-buffer-create (generate-new-buffer-name
- "*Warning*"))))
- (unwind-protect
- (with-current-buffer buffer
- (insert (substitute-command-keys
- mailcap-maybe-eval-warning))
- (goto-char (point-min))
- (display-buffer buffer)
- (yes-or-no-p "This is potentially dangerous emacs-lisp code, evaluate it? "))
- (kill-buffer buffer))))
- (eval-buffer (current-buffer)))
- (when (buffer-live-p lisp-buffer)
- (with-current-buffer lisp-buffer
- (emacs-lisp-mode)))))
-
-
-;;;
-;;; The mailcap parser
-;;;
-
-(defun mailcap-replace-regexp (regexp to-string)
- ;; Quiet replace-regexp.
- (goto-char (point-min))
- (while (re-search-forward regexp nil t)
- (replace-match to-string t nil)))
-
-(defvar mailcap-parsed-p nil)
-
-(defun mailcap-parse-mailcaps (&optional path force)
- "Parse out all the mailcaps specified in a path string PATH.
-Components of PATH are separated by the `path-separator' character
-appropriate for this system. If FORCE, re-parse even if already
-parsed. If PATH is omitted, use the value of environment variable
-MAILCAPS if set; otherwise (on Unix) use the path from RFC 1524, plus
-/usr/local/etc/mailcap."
- (interactive (list nil t))
- (when (or (not mailcap-parsed-p)
- force)
- (cond
- (path nil)
- ((getenv "MAILCAPS") (setq path (getenv "MAILCAPS")))
- ((memq system-type mailcap-poor-system-types)
- (setq path '("~/.mailcap" "~/mail.cap" "~/etc/mail.cap")))
- (t (setq path
- ;; This is per RFC 1524, specifically
- ;; with /usr before /usr/local.
- '("~/.mailcap" "/etc/mailcap" "/usr/etc/mailcap"
- "/usr/local/etc/mailcap"))))
- (let ((fnames (reverse
- (if (stringp path)
- (delete "" (split-string path path-separator))
- path)))
- fname)
- (while fnames
- (setq fname (car fnames))
- (if (and (file-readable-p fname)
- (file-regular-p fname))
- (mailcap-parse-mailcap fname))
- (setq fnames (cdr fnames))))
- (setq mailcap-parsed-p t)))
-
-(defun mailcap-parse-mailcap (fname)
- "Parse out the mailcap file specified by FNAME."
- (let (major ; The major mime type (image/audio/etc)
- minor ; The minor mime type (gif, basic, etc)
- save-pos ; Misc saved positions used in parsing
- viewer ; How to view this mime type
- info ; Misc info about this mime type
- )
- (with-temp-buffer
- (insert-file-contents fname)
- (set-syntax-table mailcap-parse-args-syntax-table)
- (mailcap-replace-regexp "#.*" "") ; Remove all comments
- (mailcap-replace-regexp "\\\\[ \t]*\n" " ") ; And collapse spaces
- (mailcap-replace-regexp "\n+" "\n") ; And blank lines
- (goto-char (point-max))
- (skip-chars-backward " \t\n")
- (delete-region (point) (point-max))
- (while (not (bobp))
- (skip-chars-backward " \t\n")
- (beginning-of-line)
- (setq save-pos (point)
- info nil)
- (skip-chars-forward "^/; \t\n")
- (downcase-region save-pos (point))
- (setq major (buffer-substring save-pos (point)))
- (skip-chars-forward " \t")
- (setq minor "")
- (when (eq (char-after) ?/)
- (forward-char)
- (skip-chars-forward " \t")
- (setq save-pos (point))
- (skip-chars-forward "^; \t\n")
- (downcase-region save-pos (point))
- (setq minor
- (cond
- ((eq ?* (or (char-after save-pos) 0)) ".*")
- ((= (point) save-pos) ".*")
- (t (regexp-quote (buffer-substring save-pos (point)))))))
- (skip-chars-forward " \t")
- ;;; Got the major/minor chunks, now for the viewers/etc
- ;;; The first item _must_ be a viewer, according to the
- ;;; RFC for mailcap files (#1524)
- (setq viewer "")
- (when (eq (char-after) ?\;)
- (forward-char)
- (skip-chars-forward " \t")
- (setq save-pos (point))
- (skip-chars-forward "^;\n")
- ;; skip \;
- (while (eq (char-before) ?\\)
- (backward-delete-char 1)
- (forward-char)
- (skip-chars-forward "^;\n"))
- (if (eq (or (char-after save-pos) 0) ?')
- (setq viewer (progn
- (narrow-to-region (1+ save-pos) (point))
- (goto-char (point-min))
- (prog1
- (read (current-buffer))
- (goto-char (point-max))
- (widen))))
- (setq viewer (buffer-substring save-pos (point)))))
- (setq save-pos (point))
- (end-of-line)
- (unless (equal viewer "")
- (setq info (nconc (list (cons 'viewer viewer)
- (cons 'type (concat major "/"
- (if (string= minor ".*")
- "*" minor))))
- (mailcap-parse-mailcap-extras save-pos (point))))
- (mailcap-mailcap-entry-passes-test info)
- (mailcap-add-mailcap-entry major minor info))
- (beginning-of-line)))))
-
-(defun mailcap-parse-mailcap-extras (st nd)
- "Grab all the extra stuff from a mailcap entry."
- (let (
- name ; From name=
- value ; its value
- results ; Assoc list of results
- name-pos ; Start of XXXX= position
- val-pos ; Start of value position
- done ; Found end of \'d ;s?
- )
- (save-restriction
- (narrow-to-region st nd)
- (goto-char (point-min))
- (skip-chars-forward " \n\t;")
- (while (not (eobp))
- (setq done nil)
- (setq name-pos (point))
- (skip-chars-forward "^ \n\t=;")
- (downcase-region name-pos (point))
- (setq name (buffer-substring name-pos (point)))
- (skip-chars-forward " \t\n")
- (if (not (eq (char-after (point)) ?=)) ; There is no value
- (setq value t)
- (skip-chars-forward " \t\n=")
- (setq val-pos (point))
- (if (memq (char-after val-pos) '(?\" ?'))
- (progn
- (setq val-pos (1+ val-pos))
- (condition-case nil
- (progn
- (forward-sexp 1)
- (backward-char 1))
- (error (goto-char (point-max)))))
- (while (not done)
- (skip-chars-forward "^;")
- (if (eq (char-after (1- (point))) ?\\ )
- (progn
- (subst-char-in-region (1- (point)) (point) ?\\ ? )
- (skip-chars-forward ";"))
- (setq done t))))
- (setq value (buffer-substring val-pos (point))))
- (setq results (cons (cons name value) results))
- (skip-chars-forward " \";\n\t"))
- results)))
-
-(defun mailcap-mailcap-entry-passes-test (info)
- "Return non-nil iff mailcap entry INFO passes its test clause.
-Also return non-nil if no test clause is present."
- (let ((test (assq 'test info)) ; The test clause
- status)
- (setq status (and test (split-string (cdr test) " ")))
- (if (and (or (assoc "needsterm" info)
- (assoc "needsterminal" info)
- (assoc "needsx11" info))
- (not (getenv "DISPLAY")))
- (setq status nil)
- (cond
- ((and (equal (nth 0 status) "test")
- (equal (nth 1 status) "-n")
- (or (equal (nth 2 status) "$DISPLAY")
- (equal (nth 2 status) "\"$DISPLAY\"")))
- (setq status (if (getenv "DISPLAY") t nil)))
- ((and (equal (nth 0 status) "test")
- (equal (nth 1 status) "-z")
- (or (equal (nth 2 status) "$DISPLAY")
- (equal (nth 2 status) "\"$DISPLAY\"")))
- (setq status (if (getenv "DISPLAY") nil t)))
- (test nil)
- (t nil)))
- (and test (listp test) (setcdr test status))))
-
-;;;
-;;; The action routines.
-;;;
-
-(defun mailcap-possible-viewers (major minor)
- "Return a list of possible viewers from MAJOR for minor type MINOR."
- (let ((exact '())
- (wildcard '()))
- (while major
- (cond
- ((equal (car (car major)) minor)
- (setq exact (cons (cdr (car major)) exact)))
- ((and minor (string-match (concat "^" (car (car major)) "$") minor))
- (setq wildcard (cons (cdr (car major)) wildcard))))
- (setq major (cdr major)))
- (nconc exact wildcard)))
-
-(defun mailcap-unescape-mime-test (test type-info)
- (let (save-pos save-chr subst)
- (cond
- ((symbolp test) test)
- ((and (listp test) (symbolp (car test))) test)
- ((or (stringp test)
- (and (listp test) (stringp (car test))
- (setq test (mapconcat 'identity test " "))))
- (with-temp-buffer
- (insert test)
- (goto-char (point-min))
- (while (not (eobp))
- (skip-chars-forward "^%")
- (if (/= (- (point)
- (progn (skip-chars-backward "\\\\")
- (point)))
- 0) ; It is an escaped %
- (progn
- (delete-char 1)
- (skip-chars-forward "%."))
- (setq save-pos (point))
- (skip-chars-forward "%")
- (setq save-chr (char-after (point)))
- ;; Escapes:
- ;; %s: name of a file for the body data
- ;; %t: content-type
- ;; %{<parameter name}: value of parameter in mailcap entry
- ;; %n: number of sub-parts for multipart content-type
- ;; %F: a set of content-type/filename pairs for multiparts
- (cond
- ((null save-chr) nil)
- ((= save-chr ?t)
- (delete-region save-pos (progn (forward-char 1) (point)))
- (insert (or (cdr (assq 'type type-info)) "\"\"")))
- ((memq save-chr '(?M ?n ?F))
- (delete-region save-pos (progn (forward-char 1) (point)))
- (insert "\"\""))
- ((= save-chr ?{)
- (forward-char 1)
- (skip-chars-forward "^}")
- (downcase-region (+ 2 save-pos) (point))
- (setq subst (buffer-substring (+ 2 save-pos) (point)))
- (delete-region save-pos (1+ (point)))
- (insert (or (cdr (assoc subst type-info)) "\"\"")))
- (t nil))))
- (buffer-string)))
- (t (error "Bad value to mailcap-unescape-mime-test: %s" test)))))
-
-(defvar mailcap-viewer-test-cache nil)
-
-(defun mailcap-viewer-passes-test (viewer-info type-info)
- "Return non-nil iff viewer specified by VIEWER-INFO passes its test clause.
-Also retun non-nil if it has no test clause. TYPE-INFO is an argument
-to supply to the test."
- (let* ((test-info (assq 'test viewer-info))
- (test (cdr test-info))
- (otest test)
- (viewer (cdr (assoc 'viewer viewer-info)))
- (default-directory (expand-file-name "~/"))
- status parsed-test cache result)
- (if (setq cache (assoc test mailcap-viewer-test-cache))
- (cadr cache)
- (setq
- result
- (cond
- ((not test-info) t) ; No test clause
- ((not test) nil) ; Already failed test
- ((eq test t) t) ; Already passed test
- ((functionp test) ; Lisp function as test
- (funcall test type-info))
- ((and (symbolp test) ; Lisp variable as test
- (boundp test))
- (symbol-value test))
- ((and (listp test) ; List to be eval'd
- (symbolp (car test)))
- (eval test))
- (t
- (setq test (mailcap-unescape-mime-test test type-info)
- test (list shell-file-name nil nil nil
- shell-command-switch test)
- status (apply 'call-process test))
- (= 0 status))))
- (push (list otest result) mailcap-viewer-test-cache)
- result)))
-
-(defun mailcap-add-mailcap-entry (major minor info)
- (let ((old-major (assoc major mailcap-mime-data)))
- (if (null old-major) ; New major area
- (setq mailcap-mime-data
- (cons (cons major (list (cons minor info)))
- mailcap-mime-data))
- (let ((cur-minor (assoc minor old-major)))
- (cond
- ((or (null cur-minor) ; New minor area, or
- (assq 'test info)) ; Has a test, insert at beginning
- (setcdr old-major (cons (cons minor info) (cdr old-major))))
- ((and (not (assq 'test info)) ; No test info, replace completely
- (not (assq 'test cur-minor))
- (equal (assq 'viewer info) ; Keep alternative viewer
- (assq 'viewer cur-minor)))
- (setcdr cur-minor info))
- (t
- (setcdr old-major (cons (cons minor info) (cdr old-major))))))
- )))
-
-(defun mailcap-add (type viewer &optional test)
- "Add VIEWER as a handler for TYPE.
-If TEST is not given, it defaults to t."
- (let ((tl (split-string type "/")))
- (when (or (not (car tl))
- (not (cadr tl)))
- (error "%s is not a valid MIME type" type))
- (mailcap-add-mailcap-entry
- (car tl) (cadr tl)
- `((viewer . ,viewer)
- (test . ,(if test test t))
- (type . ,type)))))
-
-;;;
-;;; The main whabbo
-;;;
-
-(defun mailcap-viewer-lessp (x y)
- "Return t iff viewer X is more desirable than viewer Y."
- (let ((x-wild (string-match "[*?]" (or (cdr-safe (assq 'type x)) "")))
- (y-wild (string-match "[*?]" (or (cdr-safe (assq 'type y)) "")))
- (x-lisp (not (stringp (or (cdr-safe (assq 'viewer x)) ""))))
- (y-lisp (not (stringp (or (cdr-safe (assq 'viewer y)) "")))))
- (cond
- ((and x-wild (not y-wild))
- nil)
- ((and (not x-wild) y-wild)
- t)
- ((and (not y-lisp) x-lisp)
- t)
- (t nil))))
-
-(defun mailcap-mime-info (string &optional request)
- "Get the MIME viewer command for STRING, return nil if none found.
-Expects a complete content-type header line as its argument.
-
-Second argument REQUEST specifies what information to return. If it is
-nil or the empty string, the viewer (second field of the mailcap
-entry) will be returned. If it is a string, then the mailcap field
-corresponding to that string will be returned (print, description,
-whatever). If a number, then all the information for this specific
-viewer is returned. If `all', then all possible viewers for
-this type is returned."
- (let (
- major ; Major encoding (text, etc)
- minor ; Minor encoding (html, etc)
- info ; Other info
- save-pos ; Misc. position during parse
- major-info ; (assoc major mailcap-mime-data)
- minor-info ; (assoc minor major-info)
- test ; current test proc.
- viewers ; Possible viewers
- passed ; Viewers that passed the test
- viewer ; The one and only viewer
- ctl)
- (save-excursion
- (setq ctl (mail-header-parse-content-type (or string "text/plain")))
- (setq major (split-string (car ctl) "/"))
- (setq minor (cadr major)
- major (car major))
- (when (setq major-info (cdr (assoc major mailcap-mime-data)))
- (when (setq viewers (mailcap-possible-viewers major-info minor))
- (setq info (mapcar (lambda (a) (cons (symbol-name (car a))
- (cdr a)))
- (cdr ctl)))
- (while viewers
- (if (mailcap-viewer-passes-test (car viewers) info)
- (setq passed (cons (car viewers) passed)))
- (setq viewers (cdr viewers)))
- (setq passed (sort passed 'mailcap-viewer-lessp))
- (setq viewer (car passed))))
- (when (and (stringp (cdr (assq 'viewer viewer)))
- passed)
- (setq viewer (car passed)))
- (cond
- ((and (null viewer) (not (equal major "default")) request)
- (mailcap-mime-info "default" request))
- ((or (null request) (equal request ""))
- (mailcap-unescape-mime-test (cdr (assq 'viewer viewer)) info))
- ((stringp request)
- (if (or (eq request 'test) (eq request 'viewer))
- (mailcap-unescape-mime-test
- (cdr-safe (assoc request viewer)) info)))
- ((eq request 'all)
- passed)
- (t
- ;; MUST make a copy *sigh*, else we modify mailcap-mime-data
- (setq viewer (copy-sequence viewer))
- (let ((view (assq 'viewer viewer))
- (test (assq 'test viewer)))
- (if view (setcdr view (mailcap-unescape-mime-test (cdr view) info)))
- (if test (setcdr test (mailcap-unescape-mime-test (cdr test) info))))
- viewer)))))
-
-;;;
-;;; Experimental MIME-types parsing
-;;;
-
-(defvar mailcap-mime-extensions
- '(("" . "text/plain")
- (".abs" . "audio/x-mpeg")
- (".aif" . "audio/aiff")
- (".aifc" . "audio/aiff")
- (".aiff" . "audio/aiff")
- (".ano" . "application/x-annotator")
- (".au" . "audio/ulaw")
- (".avi" . "video/x-msvideo")
- (".bcpio" . "application/x-bcpio")
- (".bin" . "application/octet-stream")
- (".cdf" . "application/x-netcdr")
- (".cpio" . "application/x-cpio")
- (".csh" . "application/x-csh")
- (".css" . "text/css")
- (".dvi" . "application/x-dvi")
- (".diff" . "text/x-patch")
- (".el" . "application/emacs-lisp")
- (".eps" . "application/postscript")
- (".etx" . "text/x-setext")
- (".exe" . "application/octet-stream")
- (".fax" . "image/x-fax")
- (".gif" . "image/gif")
- (".hdf" . "application/x-hdf")
- (".hqx" . "application/mac-binhex40")
- (".htm" . "text/html")
- (".html" . "text/html")
- (".icon" . "image/x-icon")
- (".ief" . "image/ief")
- (".jpg" . "image/jpeg")
- (".macp" . "image/x-macpaint")
- (".man" . "application/x-troff-man")
- (".me" . "application/x-troff-me")
- (".mif" . "application/mif")
- (".mov" . "video/quicktime")
- (".movie" . "video/x-sgi-movie")
- (".mp2" . "audio/x-mpeg")
- (".mp3" . "audio/x-mpeg")
- (".mp2a" . "audio/x-mpeg2")
- (".mpa" . "audio/x-mpeg")
- (".mpa2" . "audio/x-mpeg2")
- (".mpe" . "video/mpeg")
- (".mpeg" . "video/mpeg")
- (".mpega" . "audio/x-mpeg")
- (".mpegv" . "video/mpeg")
- (".mpg" . "video/mpeg")
- (".mpv" . "video/mpeg")
- (".ms" . "application/x-troff-ms")
- (".nc" . "application/x-netcdf")
- (".nc" . "application/x-netcdf")
- (".oda" . "application/oda")
- (".patch" . "text/x-patch")
- (".pbm" . "image/x-portable-bitmap")
- (".pdf" . "application/pdf")
- (".pgm" . "image/portable-graymap")
- (".pict" . "image/pict")
- (".png" . "image/png")
- (".pnm" . "image/x-portable-anymap")
- (".ppm" . "image/portable-pixmap")
- (".ps" . "application/postscript")
- (".qt" . "video/quicktime")
- (".ras" . "image/x-raster")
- (".rgb" . "image/x-rgb")
- (".rtf" . "application/rtf")
- (".rtx" . "text/richtext")
- (".sh" . "application/x-sh")
- (".sit" . "application/x-stuffit")
- (".siv" . "application/sieve")
- (".snd" . "audio/basic")
- (".src" . "application/x-wais-source")
- (".tar" . "archive/tar")
- (".tcl" . "application/x-tcl")
- (".tex" . "application/x-tex")
- (".texi" . "application/texinfo")
- (".tga" . "image/x-targa")
- (".tif" . "image/tiff")
- (".tiff" . "image/tiff")
- (".tr" . "application/x-troff")
- (".troff" . "application/x-troff")
- (".tsv" . "text/tab-separated-values")
- (".txt" . "text/plain")
- (".vbs" . "video/mpeg")
- (".vox" . "audio/basic")
- (".vrml" . "x-world/x-vrml")
- (".wav" . "audio/x-wav")
- (".xls" . "application/vnd.ms-excel")
- (".wrl" . "x-world/x-vrml")
- (".xbm" . "image/xbm")
- (".xpm" . "image/xpm")
- (".xwd" . "image/windowdump")
- (".zip" . "application/zip")
- (".ai" . "application/postscript")
- (".jpe" . "image/jpeg")
- (".jpeg" . "image/jpeg"))
- "An alist of file extensions and corresponding MIME content-types.
-This exists for you to customize the information in Lisp. It is
-merged with values from mailcap files by `mailcap-parse-mimetypes'.")
-
-(defvar mailcap-mimetypes-parsed-p nil)
-
-(defun mailcap-parse-mimetypes (&optional path force)
- "Parse out all the mimetypes specified in a Unix-style path string PATH.
-Components of PATH are separated by the `path-separator' character
-appropriate for this system. If PATH is omitted, use the value of
-environment variable MIMETYPES if set; otherwise use a default path.
-If FORCE, re-parse even if already parsed."
- (interactive (list nil t))
- (when (or (not mailcap-mimetypes-parsed-p)
- force)
- (cond
- (path nil)
- ((getenv "MIMETYPES") (setq path (getenv "MIMETYPES")))
- ((memq system-type mailcap-poor-system-types)
- (setq path '("~/mime.typ" "~/etc/mime.typ")))
- (t (setq path
- ;; mime.types seems to be the normal name, definitely so
- ;; on current GNUish systems. The search order follows
- ;; that for mailcap.
- '("~/.mime.types"
- "/etc/mime.types"
- "/usr/etc/mime.types"
- "/usr/local/etc/mime.types"
- "/usr/local/www/conf/mime.types"
- "~/.mime-types"
- "/etc/mime-types"
- "/usr/etc/mime-types"
- "/usr/local/etc/mime-types"
- "/usr/local/www/conf/mime-types"))))
- (let ((fnames (reverse (if (stringp path)
- (delete "" (split-string path path-separator))
- path)))
- fname)
- (while fnames
- (setq fname (car fnames))
- (if (and (file-readable-p fname))
- (mailcap-parse-mimetype-file fname))
- (setq fnames (cdr fnames))))
- (setq mailcap-mimetypes-parsed-p t)))
-
-(defun mailcap-parse-mimetype-file (fname)
- "Parse out a mime-types file FNAME."
- (let (type ; The MIME type for this line
- extns ; The extensions for this line
- save-pos ; Misc. saved buffer positions
- )
- (with-temp-buffer
- (insert-file-contents fname)
- (mailcap-replace-regexp "#.*" "")
- (mailcap-replace-regexp "\n+" "\n")
- (mailcap-replace-regexp "[ \t]+$" "")
- (goto-char (point-max))
- (skip-chars-backward " \t\n")
- (delete-region (point) (point-max))
- (goto-char (point-min))
- (while (not (eobp))
- (skip-chars-forward " \t\n")
- (setq save-pos (point))
- (skip-chars-forward "^ \t\n")
- (downcase-region save-pos (point))
- (setq type (buffer-substring save-pos (point)))
- (while (not (eolp))
- (skip-chars-forward " \t")
- (setq save-pos (point))
- (skip-chars-forward "^ \t\n")
- (setq extns (cons (buffer-substring save-pos (point)) extns)))
- (while extns
- (setq mailcap-mime-extensions
- (cons
- (cons (if (= (string-to-char (car extns)) ?.)
- (car extns)
- (concat "." (car extns))) type)
- mailcap-mime-extensions)
- extns (cdr extns)))))))
-
-(defun mailcap-extension-to-mime (extn)
- "Return the MIME content type of the file extensions EXTN."
- (mailcap-parse-mimetypes)
- (if (and (stringp extn)
- (not (eq (string-to-char extn) ?.)))
- (setq extn (concat "." extn)))
- (cdr (assoc (downcase extn) mailcap-mime-extensions)))
-
-;; Unused?
-(defalias 'mailcap-command-p 'executable-find)
-
-(defun mailcap-mime-types ()
- "Return a list of MIME media types."
- (mailcap-parse-mimetypes)
- (mm-delete-duplicates
- (nconc
- (mapcar 'cdr mailcap-mime-extensions)
- (apply
- 'nconc
- (mapcar
- (lambda (l)
- (delq nil
- (mapcar
- (lambda (m)
- (let ((type (cdr (assq 'type (cdr m)))))
- (if (equal (cadr (split-string type "/"))
- "*")
- nil
- type)))
- (cdr l))))
- mailcap-mime-data)))))
-
-(provide 'gnus-mailcap)
-
-;;; mailcap.el ends here
projects / elisp / gnus.git- / blobdiff