From b5a647bfb59b5e35684252cf5a17775510452223 Mon Sep 17 00:00:00 2001 From: Kenichi Handa Date: Wed, 15 Apr 1998 07:15:01 +0000 Subject: [PATCH] (coding-system-change-eol-coding): New function. (coding-system-change-text-coding): New function. --- lisp/international/mule-util.el | 40 +++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) diff --git a/lisp/international/mule-util.el b/lisp/international/mule-util.el index a2b534ada28..38178be30b0 100644 --- a/lisp/international/mule-util.el +++ b/lisp/international/mule-util.el @@ -287,6 +287,46 @@ or one is an alias of the other." (or (eq eol-type-1 eol-type-2) (and (vectorp eol-type-1) (vectorp eol-type-2))))))) +;;;###autoload +(defun coding-system-change-eol-conversion (coding-system eol-type) + "Return a coding system which differs from CODING-SYSTEM in eol conversion. +The returned coding system converts end-of-line by EOL-TYPE +but text as the same way as CODING-SYSTEM. +EOL-TYPE should be `unix', `dos', `mac', or nil. +If EOL-TYPE is nil, the returned coding system detects +how end-of-line is formatted automatically while decoding." + (let ((eol-type (cond ((eq eol-type 'unix) 0) + ((eq eol-type 'dos) 1) + ((eq eol-type 'mac) 2) + (t eol-type))) + (orig-eol-type (coding-system-eol-type coding-system))) + (if (vectorp orig-eol-type) + (if (not eol-type) + coding-system + (aref orig-eol-type eol-type)) + (let ((base (coding-system-base coding-system))) + (if (not eol-type) + base + (if (= eol-type orig-eol-type) + coding-system + (setq orig-eol-type (coding-system-eol-type base)) + (if (vectorp orig-eol-type) + (aref orig-eol-type eol-type)))))))) + +;;;###autoload +(defun coding-system-change-text-conversion (coding-system coding) + "Return a coding system which differs from CODING-SYSTEM in text conversion. +The returned coding system converts text by CODING +but end-of-line as the same way as CODING-SYSTEM. +If CODING is nil, the returned coding system detects +how text is formatted automatically while decoding." + (if (not coding) + (coding-system-base coding-system) + (let ((eol-type (coding-system-eol-type coding-system))) + (coding-system-change-eol-conversion + coding + (if (numberp eol-type) (aref [unix dos mac] eol-type)))))) + ;;;###autoload (defmacro detect-coding-with-priority (from to priority-list) "Detect a coding system of the text between FROM and TO with PRIORITY-LIST. -- 2.39.2