From: morioka <morioka>
Date: Sun, 3 May 1998 14:10:15 +0000 (+0000)
Subject: New file (copied from SEMI).
X-Git-Tag: flim-1_1_0~10
X-Git-Url: http://git.chise.org/gitweb/?a=commitdiff_plain;h=adff9c48ac4766c3ebbef785bf398ae7bf4faf40;p=elisp%2Fflim.git

New file (copied from SEMI).
---

diff --git a/mailcap.el b/mailcap.el
new file mode 100644
index 0000000..32aa278
--- /dev/null
+++ b/mailcap.el
@@ -0,0 +1,191 @@
+;;; mailcap.el --- mailcap parser
+
+;; Copyright (C) 1997,1998 Free Software Foundation, Inc.
+
+;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
+;; Created: 1997/6/27
+;; Keywords: mailcap, setting, configuration, MIME, multimedia
+
+;; This file is part of SEMI (Spadework for Emacs MIME Interfaces).
+
+;; This program 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.
+
+;; This program 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.
+
+;;; Code:
+
+;;; @ comment
+;;;
+
+(defsubst mailcap-skip-comment ()
+  (let ((chr (char-after (point))))
+    (when (and chr
+	       (or (= chr ?\n)
+		   (= chr ?#)))
+      (forward-line)
+      t)))
+
+
+;;; @ token
+;;;
+
+(defsubst mailcap-look-at-token ()
+  (if (looking-at mime-token-regexp)
+      (let ((beg (match-beginning 0))
+	    (end (match-end 0)))
+	(goto-char end)
+	(buffer-substring beg end)
+	)))
+
+
+;;; @ typefield
+;;;
+
+(defsubst mailcap-look-at-type-field ()
+  (let ((type (mailcap-look-at-token)))
+    (if type
+	(if (eq (char-after (point)) ?/)
+	    (progn
+	      (forward-char)
+	      (let ((subtype (mailcap-look-at-token)))
+		(if subtype
+		    (cons (cons 'type (intern type))
+			  (unless (string= subtype "*")
+			    (list (cons 'subtype (intern subtype)))
+			    )))))
+	  (list (cons 'type (intern type)))
+	  ))))
+
+
+;;; @ field separator
+;;;
+
+(defsubst mailcap-skip-field-separator ()
+  (let ((ret (looking-at "\\([ \t]\\|\\\\\n\\)*;\\([ \t]\\|\\\\\n\\)*")))
+    (when ret
+      (goto-char (match-end 0))
+      t)))
+
+
+;;; @ mtext
+;;;
+
+(defsubst mailcap-look-at-schar ()
+  (let ((chr (char-after (point))))
+    (if (and (>= chr ? )
+	     (/= chr ?\;)
+	     (/= chr ?\\)
+	     )
+	(prog1
+	    chr
+	  (forward-char)))))
+
+(defsubst mailcap-look-at-qchar ()
+  (let ((chr (char-after (point))))
+    (when (eq chr ?\\)
+      (forward-char 2)
+      (char-before (point))
+      )))
+
+(defsubst mailcap-look-at-mtext ()
+  (let ((beg (point)))
+    (while (or (mailcap-look-at-schar)
+	       (mailcap-look-at-schar)))
+    (buffer-substring beg (point))
+    ))
+
+
+;;; @ field
+;;;
+
+(defsubst mailcap-look-at-field ()
+  (let ((token (mailcap-look-at-token)))
+    (if token
+	(if (looking-at "[ \t]*=[ \t]*")
+	    (let ((value (progn
+			   (goto-char (match-end 0))
+			   (mailcap-look-at-mtext))))
+	      (if value
+		  (cons (intern token) value)
+		))
+	  (list (intern token))
+	  ))))
+
+
+;;; @ mailcap entry
+;;;
+
+(defun mailcap-look-at-entry ()
+  (let ((type (mailcap-look-at-type-field)))
+    (if (and type (mailcap-skip-field-separator))
+	(let ((view (mailcap-look-at-mtext))
+	      fields field)
+	  (when view
+	    (while (and (mailcap-skip-field-separator)
+			(setq field (mailcap-look-at-field))
+			)
+	      (setq fields (cons field fields))
+	      )
+	    (nconc type
+		   (list (cons 'view view))
+		   fields))))))
+
+
+;;; @ main
+;;;
+
+(defun mailcap-parse-buffer (&optional buffer order)
+  "Parse BUFFER as a mailcap, and return the result.
+If optional argument ORDER is a function, result is sorted by it.
+If optional argument ORDER is not specified, result is sorted original
+order.  Otherwise result is not sorted."
+  (save-excursion
+    (if buffer
+	(set-buffer buffer))
+    (goto-char (point-min))
+    (let (entries entry)
+      (while (progn
+	       (while (mailcap-skip-comment))
+	       (setq entry (mailcap-look-at-entry))
+	       )
+	(setq entries (cons entry entries))
+	(forward-line)
+	)
+      (cond ((functionp order) (sort entries order))
+	    ((null order) (nreverse entries))
+	    (t entries)
+	    ))))
+
+(defvar mailcap-file "~/.mailcap"
+  "*File name of user's mailcap file.")
+
+(defun mailcap-parse-file (&optional filename order)
+  "Parse FILENAME as a mailcap, and return the result.
+If optional argument ORDER is a function, result is sorted by it.
+If optional argument ORDER is not specified, result is sorted original
+order.  Otherwise result is not sorted."
+  (or filename
+      (setq filename mailcap-file))
+  (with-temp-buffer
+    (insert-file-contents filename)
+    (mailcap-parse-buffer (current-buffer) order)
+    ))
+
+
+;;; @ end
+;;;
+
+(provide 'mailcap)
+
+;;; mailcap.el ends here