;;; mailcap.el --- MIME media types configuration
-;; Copyright (C) 1998-2015 Free Software Foundation, Inc.
+;; Copyright (C) 1998-2016 Free Software Foundation, Inc.
;; Author: William M. Perry <wmperry@aventail.com>
;; Lars Magne Ingebrigtsen <larsi@gnus.org>
(eval-when-compile (require 'cl))
(autoload 'mail-header-parse-content-type "mail-parse")
-;; `mm-delete-duplicates' is an alias for `delete-dups' in Emacs 22.
-(defalias 'mailcap-delete-duplicates
- (if (fboundp 'delete-dups)
- 'delete-dups
- (autoload 'mm-delete-duplicates "mm-util")
- 'mm-delete-duplicates))
-
-;; `mailcap-replace-in-string' is an alias like `gnus-replace-in-string'.
-(eval-and-compile
- (cond
- ((fboundp 'replace-regexp-in-string)
- (defun mailcap-replace-in-string (string regexp newtext &optional literal)
- "Replace all matches for REGEXP with NEWTEXT in STRING.
-If LITERAL is non-nil, insert NEWTEXT literally. Return a new
-string containing the replacements.
-This is a compatibility function for different Emacsen."
- (replace-regexp-in-string regexp newtext string nil literal)))
- ((fboundp 'replace-in-string)
- (defalias 'mailcap-replace-in-string 'replace-in-string))))
-
(defgroup mailcap nil
"Definition of viewers for MIME types."
:version "21.1"
table)
"A syntax table for parsing SGML attributes.")
-(eval-and-compile
- (when (featurep 'xemacs)
- (condition-case nil
- (require 'lpr)
- (error nil))))
-
(defvar mailcap-print-command
(mapconcat 'identity
(cons (if (boundp 'lpr-command)
(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)
(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"))
+ ("pdf"
+ (viewer . pdf-view-mode)
+ (type . "application/pdf")
+ (test . (eq window-system 'x)))
+ ("pdf"
+ (viewer . doc-view-mode)
+ (type . "application/pdf")
+ (test . (eq window-system 'x)))
("pdf"
(viewer . "gv -safer %s")
(type . "application/pdf")
("copiousoutput"))
("sieve"
(viewer . sieve-mode)
- (test . (fboundp 'sieve-mode))
(type . "application/sieve"))
("pgp-keys"
(viewer . "gpg --import --interactive --verbose")
(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)
(test . (eq window-system '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)
- (test . (fboundp 'enriched-decode))
(type . "text/enriched"))
- ("html"
- (viewer . mm-w3-prepare-buffer)
- (test . (fboundp 'w3-prepare-buffer))
- (type . "text/html"))
("dns"
(viewer . dns-mode)
- (test . (fboundp 'dns-mode))
(type . "text/dns")))
("video"
("mpeg"
("archive"
("tar"
(viewer . tar-mode)
- (type . "archive/tar")
- (test . (fboundp 'tar-mode)))))
+ (type . "archive/tar"))))
"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)
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.
+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 if
+and only if it exists as a function, 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
results)))
(defun mailcap-mailcap-entry-passes-test (info)
- "Return non-nil if mailcap entry INFO passes its test clause.
-Also return non-nil if no test clause is present."
+ "Replace the test clause of INFO itself with a boolean for some cases.
+This function supports only `test -n $DISPLAY' and `test -z $DISPLAY',
+replaces them with t or nil. As for others or if INFO has a interactive
+spec (needsterm, needsterminal, or needsx11) but DISPLAY is not set,
+the test clause will be unchanged."
(let ((test (assq 'test info)) ; The test clause
status)
(setq status (and test (split-string (cdr test) " ")))
(let* ((test-info (assq 'test viewer-info))
(test (cdr test-info))
(otest test)
- (viewer (cdr (assoc 'viewer viewer-info)))
+ (viewer (cdr (assq 'viewer viewer-info)))
(default-directory (expand-file-name "~/"))
status parsed-test cache result)
- (cond ((setq cache (assoc test mailcap-viewer-test-cache))
+ (cond ((not (or (stringp viewer) (fboundp viewer)))
+ nil) ; Non-existent Lisp function
+ ((setq cache (assoc test mailcap-viewer-test-cache))
(cadr cache))
((not test-info) t) ; No test clause
(t
(defun mailcap-mime-types ()
"Return a list of MIME media types."
(mailcap-parse-mimetypes)
- (mailcap-delete-duplicates
+ (delete-dups
(nconc
(mapcar 'cdr mailcap-mime-extensions)
(apply
(mailcap-parse-mimetypes)
(let* ((all-mime-type
;; All unique MIME types from file extensions
- (mailcap-delete-duplicates
+ (delete-dups
(mapcar (lambda (file)
(mailcap-extension-to-mime
(file-name-extension file t)))
files)))
(all-mime-info
;; All MIME info lists
- (mailcap-delete-duplicates
+ (delete-dups
(mapcar (lambda (mime-type)
(mailcap-mime-info mime-type 'all))
all-mime-type)))
(car all-mime-info)))
(commands
;; Command strings from `viewer' field of the MIME info
- (mailcap-delete-duplicates
- (delq nil (mapcar (lambda (mime-info)
- (let ((command (cdr (assoc 'viewer mime-info))))
- (if (stringp command)
- (mailcap-replace-in-string
- ;; Replace mailcap's `%s' placeholder
- ;; with dired's `?' placeholder
- (mailcap-replace-in-string
- ;; Remove the final filename placeholder
- command "[ \t\n]*\\('\\)?%s\\1?[ \t\n]*\\'" "" t)
- "%s" "?" t))))
+ (delete-dups
+ (delq nil (mapcar
+ (lambda (mime-info)
+ (let ((command (cdr (assoc 'viewer mime-info))))
+ (if (stringp command)
+ (replace-regexp-in-string
+ ;; Replace mailcap's `%s' placeholder
+ ;; with dired's `?' placeholder
+ "%s" "?"
+ (replace-regexp-in-string
+ ;; Remove the final filename placeholder
+ "[ \t\n]*\\('\\)?%s\\1?[ \t\n]*\\'" ""
+ command nil t)
+ nil t))))
common-mime-info)))))
commands))
+(defun mailcap-view-mime (type)
+ "View the data in the current buffer that has MIME type TYPE.
+`mailcap-mime-data' determines the method to use."
+ (let ((method (mailcap-mime-info type)))
+ (if (stringp method)
+ (shell-command-on-region (point-min) (point-max)
+ ;; Use stdin as the "%s".
+ (format method "-")
+ (current-buffer)
+ t)
+ (funcall method))))
+
(provide 'mailcap)
;;; mailcap.el ends here