;;; cmacexp.el --- expand C macros in a region
-;; Copyright (C) 1992, 1994 Free Software Foundation, Inc.
+;; Copyright (C) 1992, 1994, 1996 Free Software Foundation, Inc.
;; Author: Francesco Potorti` <pot@cnuce.cnr.it>
-;; Version: $Id: cmacexp.el,v 1.21 1996/01/14 07:34:30 erik Exp rms $
;; Adapted-By: ESR
;; Keywords: c
(provide 'cmacexp)
-(defvar c-macro-shrink-window-flag nil
- "*Non-nil means shrink the *Macroexpansion* window to fit its contents.")
+(defgroup c-macro nil
+ "Expand C macros in a region."
+ :group 'c)
-(defvar c-macro-prompt-flag nil
- "*Non-nil makes `c-macro-expand' prompt for preprocessor arguments.")
-(defvar c-macro-preprocessor
+(defcustom c-macro-shrink-window-flag nil
+ "*Non-nil means shrink the *Macroexpansion* window to fit its contents."
+ :type 'boolean
+ :group 'c-macro)
+
+(defcustom c-macro-prompt-flag nil
+ "*Non-nil makes `c-macro-expand' prompt for preprocessor arguments."
+ :type 'boolean
+ :group 'c-macro)
+
+(defcustom c-macro-preprocessor
;; Cannot rely on standard directory on MS-DOS to find CPP.
- (if (eq system-type 'ms-dos) "cpp -C" "/lib/cpp -C")
+ (cond ((eq system-type 'ms-dos) "cpp -C")
+ ;; Solaris has it in an unusual place.
+ ((and (string-match "^[^-]*-[^-]*-\\(solaris\\|sunos5\\)"
+ system-configuration)
+ (file-exists-p "/opt/SUNWspro/SC3.0.1/bin/acomp"))
+ "/opt/SUNWspro/SC3.0.1/bin/acomp -C -E")
+ (t "/lib/cpp -C"))
"The preprocessor used by the cmacexp package.
If you change this, be sure to preserve the `-C' (don't strip comments)
-option, or to set an equivalent one.")
+option, or to set an equivalent one."
+ :type 'string
+ :group 'c-macro)
-(defvar c-macro-cppflags ""
- "*Preprocessor flags used by `c-macro-expand'.")
+(defcustom c-macro-cppflags ""
+ "*Preprocessor flags used by `c-macro-expand'."
+ :type 'string
+ :group 'c-macro)
(defconst c-macro-buffer-name "*Macroexpansion*")
+;;;###autoload
(defun c-macro-expand (start end subst)
"Expand C macros in the region, using the C preprocessor.
Normally display output in temp buffer, but
(setq minheight (if alreadythere
(window-height)
window-min-height))
- (setq maxheight (/ (screen-height) 2))
+ (setq maxheight (/ (frame-height) 2))
(enlarge-window (- (min maxheight
(max minheight
(+ 2 (vertical-motion (point-max)))))
c-macro-preprocessor
(if (string= "" c-macro-cppflags) "" " ")
c-macro-cppflags))
- (uniquestring "???!!!???!!! start of c-macro expansion ???!!!???!!!")
+ (uniquestring "??? !!! ??? start of c-macro expansion ??? !!! ???")
(startlinenum 0)
(linenum 0)
(startstat ())
(startmarker "")
(exit-status 0)
- (tempname (make-temp-name (or (getenv "TMPDIR") (getenv "TEMP")
- (getenv "TMP") "/tmp/"))))
+ (tempname (make-temp-name
+ (expand-file-name "cmacexp"
+ temporary-file-directory))))
(unwind-protect
(save-excursion
(save-restriction
(widen)
- (set-buffer outbuf)
- (setq buffer-read-only nil)
- (erase-buffer)
- (set-syntax-table c-mode-syntax-table)
+ (let ((in-syntax-table (syntax-table)))
+ (set-buffer outbuf)
+ (setq buffer-read-only nil)
+ (erase-buffer)
+ (set-syntax-table in-syntax-table))
(insert-buffer-substring inbuf 1 end))
;; We have copied inbuf to outbuf. Point is at end of
- ;; outbuf. Insert a space at the end, so cpp can correctly
- ;; parse a token ending at END.
- (insert " ")
+ ;; outbuf. Inset a newline at the end, so cpp can correctly
+ ;; parse a token ending at END.
+ (insert "\n")
;; Save sexp status and line number at START.
(setq startstat (parse-partial-sexp 1 start))