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cobol.el
executable file
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cobol.el
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;;; Cobol mode for GNU Emcas (version 2.00, Mar 01, 2000)
;;; There does not seem to be a maintainer for this mode, and none
;;; of the email addresses for it are good. So, I've made it
;;; what I think it should be. This includes adding
;;; color syntax highlighting (basically the only major change).
;;;
;;; Matthew Vanecek <linuxguy@directlink.net>
;;; Please feel free to send suggestions or improvements.
;;;
;;;
;;; Cobol mode for GNU Emacs (version 1.01, Jun 21, 1988)
;;; Copyright (c) 1987 Free Software Foundation, Inc.
;;; Written by Robert A Sutterfield (bob@cis.ohio-state.edu) and
;;; Paul W. Placeway (paul@tut.cis.ohio-state.edu), as changes to fortran.el
;;; Bugs to bug-cobol-mode@cis.ohio-state.edu
;;; [0) the left column is column 1]
;;; + 1) newline should indent to the same column as the start of
;;; the previous line
;;; + 2) tabs at 8 and every four thereafter (12, 16, 20, etc.)
;;; + 3) tabs should be expanded to spaces on input
;;; + (3a) no tabs should appear in the buffer
;;; no 4) right margin bell at 72 (hard to do)
;;; + 5) (optional) flash matching parentheses
;;; + 6) no auto-fill (WHY -- PWP) (not by default)
;;; * 7) auto startup on .cob files
;;; To do this, the expression ("\\.cob$" . cobol-mode) must be
;;; added to loaddefs.el in the gnu-emacs lisp directory, and
;;; loaddefs must be re-byte-code-compiled.
;;; Also, an autoload must be set up for cobol-mode in loaddefs.el;
;;; see the loaddefs.el file in this directory.
;;; + 8) auto indent to that of the last line (more magic than that...)
;;; + 9) delete on a blank line should go back to LAST tab stop
;;; + 10) C-c C-c moves cursor to ARG (or prompted) column, adding
;;; spaces to get there if needed
;;; 11) C-c C-l does (goto-line)
;;;
;;; COBOL mode adapted from:
;;;: Fortran mode for GNU Emacs (beta test version 1.21, Oct. 1, 1985)
;;;; Copyright (c) 1986 Free Software Foundation, Inc.
;;;; Written by Michael D. Prange (mit-eddie!mit-erl!prange).
;;;; Author acknowledges help from Stephen Gildea <mit-erl!gildea>
;; This file is not part of the GNU Emacs distribution (yet).
;; This file is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY. No author or distributor
;; accepts responsibility to anyone for the consequences of using it
;; or for whether it serves any particular purpose or works at all,
;; unless he says so in writing. Refer to the GNU Emacs General Public
;; License for full details.
;; Everyone is granted permission to copy, modify and redistribute
;; this file, but only under the conditions described in the
;; GNU Emacs General Public License. A copy of this license is
;; supposed to have been given to you along with GNU Emacs so you
;; can know your rights and responsibilities. It should be in a
;; file named COPYING. Among other things, the copyright notice
;; and this notice must be preserved on all copies.
(require 'lazy-lock)
(require 'fast-lock)
;; Bugs to bug-cobol-mode@cis.ohio-state.edu.
;;; Code:
(defgroup old-cobol nil
"Old COBOL code editing commands for Emacs."
:prefix "cbl"
:group 'languages)
(defcustom cobol-tab-always-indent t
"*Non-nil means TAB in COBOL mode should always reindent the current line,
regardless of where in the line point is when the TAB command is used."
:type 'booleanaev
:group 'old-cobol)
(defvar cobol-do-indent 4
"*Extra indentation applied to `do' blocks.")
(defvar cobol-if-indent 4
"*Extra indentation applied to `if' blocks.")
(defvar cobol-continuation-indent 6
"*Extra indentation applied to `continuation' lines.")
(defvar cobol-pic-column 50
"*The column that PIC clauses should be aligned to.")
(defvar cobol-indent-increment 4
"*Amount of indentation to add to a line when it can be indented.")
(defvar cobol-comment-indent-style 'fixed
"*nil forces comment lines not to be touched,
'fixed produces fixed comment indentation to comment-column,
and 'relative indents to current cobol indentation plus comment-column.")
(defvar cobol-comment-line-column 6
"*Indentation for text in comment lines.")
(defvar comment-line-start "......\\*"
"*Delimiter inserted to start new full-line comment.")
(defvar comment-line-start-skip "......\\*"
"*Regexp to match the start of a full-line comment.")
(defvar cobol-minimum-statement-indent 7 ;;; this puts it in column 8
"*Minimum indentation for cobol statements.")
(defvar cobol-minimum-area-b-indent 11 ;;; this puts it in column 12
"*Minimum indentation for cobol statements that should be in Area B.")
;; Note that this is documented in the v18 manuals as being a string
;; of length one rather than a single character.
;; The code in this file accepts either format for compatibility.
(defvar cobol-comment-indent-char " "
"*Character to be inserted for Cobol comment indentation.
Normally a space.")
(defvar cobol-line-number-indent 1
"*Maximum indentation for Cobol line numbers.
6 means right-justify them within their six-column field.")
(defvar cobol-check-all-num-for-matching-do nil
"*Non-nil causes all numbered lines to be treated as possible do-loop ends.")
(defvar cobol-continuation-char ?-
"*Character which is inserted in column 7 by \\[cobol-split-line]
to begin a continuation line. Normally ?-")
(defvar cobol-comment-region " ** "
"*String inserted by \\[cobol-comment-region] at start of each line in region.")
(defvar cobol-electric-line-number t
"*Non-nil causes line number digits to be moved to the correct column as typed.")
(defvar cobol-startup-message t
"*Non-nil displays a startup message when cobol-mode is first called.")
(defvar cobol-column-ruler
(concat "0 00 1 2 3 4 5 6 7 2\n"
"1.../67..0..../....0..../....0..../....0..../....0..../....0..../....0..\n")
"*String displayed above current line by \\[cobol-column-ruler].")
(defconst cobol-mode-version "2.00")
(defvar cobol-mode-syntax-table nil
"Syntax table in use in cobol-mode buffers.")
(if cobol-mode-syntax-table ()
(setq cobol-mode-syntax-table (make-syntax-table))
(modify-syntax-entry ?\; "w" cobol-mode-syntax-table)
(modify-syntax-entry ?+ "." cobol-mode-syntax-table)
(modify-syntax-entry ?- "." cobol-mode-syntax-table)
; (modify-syntax-entry ?* "." cobol-mode-syntax-table)
; Apostrophe's use in comments are treated as open quotes without this
(modify-syntax-entry ?* "<" cobol-mode-syntax-table)
(modify-syntax-entry ?/ "." cobol-mode-syntax-table)
(modify-syntax-entry ?\' "\"" cobol-mode-syntax-table)
(modify-syntax-entry ?\" "\"" cobol-mode-syntax-table)
(modify-syntax-entry ?\\ "_" cobol-mode-syntax-table)
(modify-syntax-entry ?. "w" cobol-mode-syntax-table)
(modify-syntax-entry ?\n ">" cobol-mode-syntax-table))
(defvar cobol-mode-map ()
"Keymap used in cobol mode.")
(if cobol-mode-map ()
(setq cobol-mode-map (make-sparse-keymap)) ; this SHOULD be a real keymap
(define-key cobol-mode-map ";" 'cobol-abbrev-start)
(define-key cobol-mode-map "\C-c;" 'cobol-comment-region)
(define-key cobol-mode-map "\e\C-a" 'beginning-of-cobol-subprogram)
(define-key cobol-mode-map "\e\C-e" 'end-of-cobol-subprogram)
(define-key cobol-mode-map "\e;" 'cobol-indent-comment)
(define-key cobol-mode-map "\e\C-h" 'mark-cobol-subprogram)
(define-key cobol-mode-map "\e\n" 'cobol-split-line)
(define-key cobol-mode-map "\e\C-q" 'cobol-indent-subprogram)
(define-key cobol-mode-map "\C-c\C-w" 'cobol-window-create)
(define-key cobol-mode-map "\C-c\C-r" 'cobol-column-ruler)
(define-key cobol-mode-map "\C-c\C-p" 'cobol-previous-statement)
(define-key cobol-mode-map "\C-c\C-n" 'cobol-next-statement)
(define-key cobol-mode-map "\C-c\C-c" 'cobol-goto-column)
(define-key cobol-mode-map "\C-cc" 'cobol-goto-column) ; avoid confusion
(define-key cobol-mode-map "\C-c\C-l" 'goto-line) ; for Sam
(define-key cobol-mode-map "\C-cl" 'goto-line) ; avoid confusion
(define-key cobol-mode-map "\t" 'cobol-indent-line)
(define-key cobol-mode-map "\C-m" 'newline-and-indent) ; magic RET key
(let ((n ?\ ))
(while (< n 127)
(define-key cobol-mode-map (char-to-string n) 'cobol-self-insert)
(setq n (1+ n))))
(define-key cobol-mode-map "\177" 'cobol-back-delete) ; magic DEL key too
; (define-key cobol-mode-map "0" 'cobol-electric-line-number)
; (define-key cobol-mode-map "1" 'cobol-electric-line-number)
; (define-key cobol-mode-map "2" 'cobol-electric-line-number)
; (define-key cobol-mode-map "3" 'cobol-electric-line-number)
; (define-key cobol-mode-map "4" 'cobol-electric-line-number)
; (define-key cobol-mode-map "5" 'cobol-electric-line-number)
; (define-key cobol-mode-map "6" 'cobol-electric-line-number)
; (define-key cobol-mode-map "7" 'cobol-electric-line-number)
; (define-key cobol-mode-map "8" 'cobol-electric-line-number)
; (define-key cobol-mode-map "9" 'cobol-electric-line-number)
(define-key cobol-mode-map [menu-bar] (make-sparse-keymap))
)
(defvar cobol-mode-abbrev-table nil)
(if cobol-mode-abbrev-table ()
(define-abbrev-table 'cobol-mode-abbrev-table ())
(let ((abbrevs-changed nil))
(define-abbrev cobol-mode-abbrev-table ";b" "byte" nil)
(define-abbrev cobol-mode-abbrev-table ";ch" "character" nil)
(define-abbrev cobol-mode-abbrev-table ";cl" "close" nil)
(define-abbrev cobol-mode-abbrev-table ";c" "continue" nil)
(define-abbrev cobol-mode-abbrev-table ";cm" "common" nil)
(define-abbrev cobol-mode-abbrev-table ";cx" "complex" nil)
(define-abbrev cobol-mode-abbrev-table ";di" "dimension" nil)
(define-abbrev cobol-mode-abbrev-table ";do" "double" nil)
(define-abbrev cobol-mode-abbrev-table ";dc" "double complex" nil)
(define-abbrev cobol-mode-abbrev-table ";dp" "double precision" nil)
(define-abbrev cobol-mode-abbrev-table ";dw" "do while" nil)
(define-abbrev cobol-mode-abbrev-table ";e" "else" nil)
(define-abbrev cobol-mode-abbrev-table ";ed" "enddo" nil)
(define-abbrev cobol-mode-abbrev-table ";el" "elseif" nil)
(define-abbrev cobol-mode-abbrev-table ";en" "endif" nil)
(define-abbrev cobol-mode-abbrev-table ";eq" "equivalence" nil)
(define-abbrev cobol-mode-abbrev-table ";ex" "external" nil)
(define-abbrev cobol-mode-abbrev-table ";ey" "entry" nil)
(define-abbrev cobol-mode-abbrev-table ";f" "format" nil)
(define-abbrev cobol-mode-abbrev-table ";fu" "function" nil)
(define-abbrev cobol-mode-abbrev-table ";g" "goto" nil)
(define-abbrev cobol-mode-abbrev-table ";im" "implicit" nil)
(define-abbrev cobol-mode-abbrev-table ";ib" "implicit byte" nil)
(define-abbrev cobol-mode-abbrev-table ";ic" "implicit complex" nil)
(define-abbrev cobol-mode-abbrev-table ";ich" "implicit character" nil)
(define-abbrev cobol-mode-abbrev-table ";ii" "implicit integer" nil)
(define-abbrev cobol-mode-abbrev-table ";il" "implicit logical" nil)
(define-abbrev cobol-mode-abbrev-table ";ir" "implicit real" nil)
(define-abbrev cobol-mode-abbrev-table ";inc" "include" nil)
(define-abbrev cobol-mode-abbrev-table ";in" "integer" nil)
(define-abbrev cobol-mode-abbrev-table ";intr" "intrinsic" nil)
(define-abbrev cobol-mode-abbrev-table ";l" "logical" nil)
(define-abbrev cobol-mode-abbrev-table ";op" "open" nil)
(define-abbrev cobol-mode-abbrev-table ";pa" "parameter" nil)
(define-abbrev cobol-mode-abbrev-table ";pr" "program" nil)
(define-abbrev cobol-mode-abbrev-table ";p" "print" nil)
(define-abbrev cobol-mode-abbrev-table ";re" "real" nil)
(define-abbrev cobol-mode-abbrev-table ";r" "read" nil)
(define-abbrev cobol-mode-abbrev-table ";rt" "return" nil)
(define-abbrev cobol-mode-abbrev-table ";rw" "rewind" nil)
(define-abbrev cobol-mode-abbrev-table ";s" "stop" nil)
(define-abbrev cobol-mode-abbrev-table ";su" "subroutine" nil)
(define-abbrev cobol-mode-abbrev-table ";ty" "type" nil)
(define-abbrev cobol-mode-abbrev-table ";w" "write" nil)))
(defvar not-a-comment "^......[^\\*\\n]")
(defvar is-a-comment "^......\\*")
(defvar cobol-usage-words
"[ \t]+\\(USAGE\\([ \t]+\\(IS\\)?\\)?\\)[ \t]+")
(defvar cobol-modifier-words
"[ \t]+\\(\\(A\\|DE\\)SCENDING\\([ \t]+KEY\\)?\\|DYNAMIC\\|JUSTIFIED\\)")
(defvar cobol-debugging-statements
"[ \t]+\\(DEBUG-CONTENTS\\|DEBUG-ITEM\\|DEBUG-LINE\\|DEBUG-NAME\\|DEBUG-SUB-1\\|DEBUG-SUB-2\\|DEBUG-SUB-3\\|DEBUGGING\\)")
(defvar cobol-data-types
"[ \t]+\\<\\(ALPHA\\(\\(BET\\(IC\\(-LOWER\\|-UPPER\\)?\\)\\)?\\|NUMERIC\\(-EDITED\\)?\\)\\|BINARY\\(-\\(CHAR\\|SHORT\\|LONG\\|DOUBLE\\)\\)?\\|COMP\\(\\(UTATIONAL\\)?-[0-9Xx]\\)?\\|DISPLAY\\|NEGATIVE\\|PACKED-DECIMAL\\|POSITIVE\\)[^-A-Za-z0-9]")
(defvar cobol-scope-delimiters
"[ \t]+\\(END-\\(ADD\\|CALL\\|COMPUTE\\|DELETE\\|DIVIDE\\|EVALUATE\\|EXEC\\|IF\\|MULTIPLY\\|PERFORM\\|READ\\|RECEIVE\\|RETURN\\|REWRITE\\|SEARCH\\|START\\|STRING\\|SUBTRACT\\|UNSTRING\\|WRITE\\)\\)")
(defvar cobol-verbs
(concat
"[^-A-Za-z0-9\n]\\<\\(A\\(CCEPT\\|DD\\|LSO\\|ND\\|SSIGN\\|T\\)\\|"
"BY\\|"
"C\\(A\\(LL\\(-CONVENTION\\)?\\|NCEL\\)\\|LOSE\\|O\\(MPUTE\\|NTAINS\\|NTINUE\\|PY\\)\\)\\|"
"D\\(E\\(CLARE\\|ETE\\|PENDING[ \t]+ON\\|LIMITED[ \t]+BY\\)\\|I\\(SPLAY\\|VIDE\\)\\)\\|"
"E\\(LIF\\|LSE\\|NTRY\\|VALUATE\\|X\\(IT\\|EC[ \t]+SQL\\)\\)\\|F\\(OR\\|ROM\\)\\|"
"G\\(IVING\\|O\\(BACK\\)?\\)\\|"
"I\\(F\\|N\\(ITIALIZE\\|TO\\|SPECT\\|DEX\\(ED[ \t]+BY\\)?\\)\\|S\\)\\|LESS\\|"
"M\\(ERGE\\|OVE\\|ULTIPLY\\)\\|NEXT[ \t]SENTENCE\\|O\\(CCURS\\|PEN\\|R\\)\\|"
"P\\(ERFORM\\|IC\\|OINTER\\)\\|"
"R\\(E\\(AD\\|DEFINES\\|MAINDER\\|NAMES\\|PLAC\\(E\\|ING\\)\\|TURN\\(S\\|ING\\)?\\|WRITE\\)\\|"
"OUNDED\\|UN\\)\\|"
"S\\(E\\(ARCH\\|LECT\\|QUENTIAL\\|T\\)\\|ORT\\(-MERGE\\)?\\|PECIAL-NAMES\\|"
"T\\(OP\\|RING\\|ART\\|ATUS\\)\\)"
"\\|T\\(ALLYING\\|H\\(EN\\|AN\\|ROUGH\\|RU\\)\\|O\\|RAILING\\)\\|"
"U\\(N\\(STRING\\|TIL\\)\\|PON\\|S\\(E\\|ING\\)\\)\\|VA\\(LUE\\|RYING\\)\\|"
"W\\(HEN\\|ITH\\|RITE\\)\\)[ \.\n]" ;[^-_A-Za-z0-9]?"
))
(defvar cobol-divisions
(concat not-a-comment
"[ \t]*\\(IDENTIFICATION\\|DATA\\|ENVIRONMENT\\|PROCEDURE\\)[ \t]+\\(DIVISION\\)" ))
(defvar cobol-prog-info
(concat not-a-comment
"[ \t]*\\(AUTHOR\\|PROGRAM-ID\\|DATE-COMPILED\\|DATE-WRITTEN\\|SOURCE-COMPUTER\\|OBJECT-COMPUTER\\)"))
(defvar cobol-sections
(concat not-a-comment "[ \t]*\\([-A-Za-z0-9]+\\)[ \t]+\\(SECTION\\)\\."))
(defvar cobol-paragraphs
(concat not-a-comment "\\([-A-Za-z0-9]+\\)\\.$"))
(defvar cobol-constants
(concat
"[ \t]+\\(DATE\\|FALSE\\|FILLER\\|HIGH-VALUE\\(S\\)?\\|LENGTH\\|LOW-VALUE\\(S\\)?\\|"
"SPACE\\(S\\)?\\|TRUE\\|ZERO\\(S\\|ES\\)?\\)"
))
(defvar cobol-font-lock-keywords
(list
(list cobol-data-types '(1 font-lock-type-face t))
(list cobol-verbs '(1 font-lock-keyword-face t))
(list cobol-scope-delimiters '(1 font-lock-keyword-face t))
(list cobol-modifier-words '(1 font-lock-keyword-face t))
(list cobol-usage-words '(1 font-lock-type-face t))
(list cobol-divisions '(1 font-lock-constant-face t) '(2 font-lock-string-face t))
(list cobol-sections '(1 font-lock-constant-face t) '(2 font-lock-string-face t))
(list cobol-paragraphs '(1 font-lock-constant-face t))
(list cobol-constants '(1 font-lock-constant-face t))
(list cobol-prog-info '(1 font-lock-reference-face t))
'("^......\\(\\*.*\\)" 1 font-lock-comment-face t
)
))
;;;###autoload
(defun cobol-mode ()
"Major mode for editing cobol code.
Tab indents the current cobol line correctly.
Type `;?' or `;\\[help-command]' to display a list of built-in abbrevs for Cobol keywords.
Variables controlling indentation style and extra features:
comment-start
Should allways be nil in Cobol mode. Cobol has no in-line comments.
cobol-do-indent
Extra indentation within do blocks. (default 4)
cobol-if-indent
Extra indentation within if blocks. (default 4)
cobol-continuation-indent
Extra indentation appled to continuation statements. (default 6)
cobol-indent-increment
Amount of indentation to add to a line when it can be indented (default 4)
cobol-comment-line-column
Amount of indentation for text within full-line comments. (default 6)
cobol-comment-indent-style
nil means don't change indentation of text in full-line comments,
fixed means indent that text at column cobol-comment-line-column
relative means indent at cobol-comment-line-column beyond the
indentation for a line of code.
Default value is fixed.
cobol-comment-indent-char
Character to be inserted instead of space for full-line comment
indentation. (default SPC)
cobol-minimum-statement-indent
Minimum indentation for cobol statements. (default 8)
cobol-line-number-indent
Maximum indentation for line numbers. A line number will get
less than this much indentation if necessary to avoid reaching
column 5. (default 1)
cobol-check-all-num-for-matching-do
Non-nil causes all numbered lines to be treated as possible 'continue'
statements. (default nil)
cobol-continuation-char
character to be inserted in column 5 of a continuation line.
(default is ?-)
cobol-comment-region
String inserted by \\[cobol-comment-region] at start of each line in
region. (default \" ** \")
cobol-electric-line-number
Non-nil causes line number digits to be moved to the correct column
as typed. (default t)
cobol-startup-message
Set to nil to inhibit message first time cobol-mode is used.
Turning on Cobol mode calls the value of the variable cobol-mode-hook
with no args, if that value is non-nil.
\\{cobol-mode-map}"
(interactive)
(kill-all-local-variables)
(setq mode-name "Cobol")
(setq major-mode 'cobol-mode)
(if cobol-startup-message
(message "Emacs Cobol mode ver. %s. Mail bugs to linux4us@home.com" cobol-mode-version))
(setq cobol-startup-message nil)
; (setq local-abbrev-table cobol-mode-abbrev-table) ;; no abbrevs for now
(set-syntax-table cobol-mode-syntax-table)
(use-local-map cobol-mode-map)
(make-local-variable 'indent-line-function)
(setq indent-line-function 'cobol-indent-line)
(make-local-variable 'comment-indent-function)
(setq comment-indent-function 'cobol-comment-hook)
(make-local-variable 'comment-line-start-skip)
; (setq comment-line-start-skip "^ *\\*") ; The only way to do a comment is a * in column 7
(setq comment-line-start-skip is-a-comment)
(make-local-variable 'comment-line-start)
; (setq comment-line-start "** ")
(setq comment-line-start is-a-comment)
(make-local-variable 'comment-start-skip)
; (setq comment-start-skip "![ \t]*")
(setq comment-start-skip is-a-comment)
(make-local-variable 'comment-start)
(setq comment-start nil) ; COBOL has no in-line comments
(make-local-variable 'comment-column)
(setq comment-column cobol-comment-line-column)
(make-local-variable 'require-final-newline)
(setq require-final-newline t)
(make-local-variable 'write-file-hooks)
(setq write-file-hooks (cons 'cobol-no-tabs-hook write-file-hooks))
(make-local-variable 'find-file-hooks)
(setq find-file-hooks (cons 'cobol-no-tabs-hook find-file-hooks))
(make-local-variable 'abbrev-all-caps)
(setq abbrev-all-caps t)
(make-local-variable 'indent-tabs-mode)
(setq indent-tabs-mode t)
(make-local-variable 'fill-column)
(make-local-variable 'require-final-newline)
(setq require-final-newline t)
(setq fill-column 70)
;; Font lock support
(make-local-variable 'font-lock-defaults)
(setq font-lock-defaults '(cobol-font-lock-keywords nil t))
(make-local-variable 'lazy-lock-defer-on-scrolling)
(make-local-variable 'lazy-lock-defer-contextually)
(make-local-variable 'lazy-lock-stealth-time)
(make-local-variable 'lazy-lock-stealth-lines)
(make-local-variable 'lazy-lock-stealth-verbose)
(make-local-variable 'lazy-lock-defer-time)
(make-local-variable 'lazy-lock-minimum-size)
(make-local-variable 'font-lock-support-mode)
(setq font-lock-support-mode 'lazy-lock-mode)
(setq lazy-lock-defer-on-scrolling nil)
(setq lazy-lock-defer-contextually nil)
(setq lazy-lock-stealth-time 5)
(setq lazy-lock-stealth-lines 100)
(setq lazy-lock-minimum-size 204800)
(setq lazy-lock-stealth-verbose t)
(setq lazy-lock-defer-time 0.25)
(run-hooks 'cobol-mode-hook))
(defun cobol-comment-hook ()
cobol-comment-line-column) ; ALWAYS comment in the comment column
(defun cobol-self-insert (arg)
"Do a self-insert-command, and check for the right margin, ringing
the bell if it is reached."
(interactive "*p")
(let ((column (current-column)))
(self-insert-command arg)
(if (and (< column fill-column)
(>= (current-column)
fill-column))
(beep 't))))
(defun cobol-goto-column (arg)
"Goto column ARG, counting from column 1, adding spaces to
the end of the line if needed"
(interactive "NGoto column: ")
(if (> arg 0)
(progn
(end-of-line)
(if (> (current-column) (- arg 1))
(progn
(beginning-of-line)
(forward-char (- arg 1)))
(insert-char ? (- arg (current-column) 1))))))
(defun cobol-back-delete (arg &optional killp)
"Slightly magic version of backward-delete-char-untabify"
(interactive "*p\nP")
(let (atws (column (current-column)))
(insert-char ?\n 1)
(forward-char -1)
(beginning-of-line)
(if (looking-at "[ \t]*$")
(progn
(if (= (% (+ column 1) cobol-indent-increment) 0)
(setq column (max cobol-minimum-statement-indent
(- column cobol-indent-increment)))
(setq column (max cobol-minimum-statement-indent
(* (/ column cobol-indent-increment)
cobol-indent-increment))))
(delete-horizontal-space)
(insert-char (if (stringp cobol-comment-indent-char)
(aref cobol-comment-indent-char 0)
cobol-comment-indent-char)
column))
(progn
(end-of-line)
(backward-delete-char-untabify arg killp)))
(end-of-line)
(delete-char 1)))
(defun cobol-no-tabs-hook ()
"Hook for write file that removes all tabs from the buffer.
This function must return nil so that the file will actually be written."
(save-excursion
; the following code is stolen from tabify.el...
(goto-char (point-min))
(while (search-forward "\t" nil t) ; faster than re-search
(let ((start (point))
(column (current-column))
(indent-tabs-mode nil))
(skip-chars-backward "\t")
(delete-region start (point))
(indent-to column))))
nil) ; just in case to make sure file is written
(defun cobol-indent-comment ()
"Align or create comment on current line.
Existing comments of all types are recognized and aligned.
If the line has no comment, a side-by-side comment is inserted and aligned
if the value of comment-start is not nil.
Otherwise, a separate-line comment is inserted, on this line
or on a new line inserted before this line if this line is not blank."
(interactive)
(beginning-of-line)
;; Recognize existing comments of either kind.
(cond ((looking-at comment-line-start-skip)
(delete-horizontal-regexp " \\*") ; kill the old comment stuff
(indent-to (cobol-comment-hook))
(insert comment-line-start))
;; No existing comment.
;; Insert separate-line comment, making a new line if nec.
(t
(if (looking-at "^[ \t]*$")
(delete-horizontal-space)
(beginning-of-line)
(insert "\n")
(forward-char -1))
(indent-to (cobol-comment-hook))
(insert comment-line-start)
)))
;; (insert-char (if (stringp cobol-comment-indent-char)
;; (aref cobol-comment-indent-char 0)
;; cobol-comment-indent-char)
;; (- (calculate-cobol-indent) (current-column))))))
(defun cobol-comment-region (beg-region end-region arg)
"Comments every line in the region.
Puts cobol-comment-region at the beginning of every line in the region.
BEG-REGION and END-REGION are args which specify the region boundaries.
With non-nil ARG, uncomments the region."
(interactive "*r\nP")
(let ((end-region-mark (make-marker)) (save-point (point-marker)))
(set-marker end-region-mark end-region)
(goto-char beg-region)
(beginning-of-line)
(if (not arg) ;comment the region
(progn (insert cobol-comment-region)
(delete-char 7) ; we would like to maintain the original
; alignment as closely as possible
(while (and (= (forward-line 1) 0)
(< (point) end-region-mark))
(insert cobol-comment-region)
(delete-char 7))))
(goto-char save-point)
(set-marker end-region-mark nil)
(set-marker save-point nil)))
(defun cobol-uncomment-region (beg-region end-region arg)
"Uncomments every line in the region.
Deletes cobol-comment-region from the beginning of every line in the region.
BEG-REGION and END-REGION are args which specify the region boundaries."
(interactive "*r\nP")
(let ((end-region-mark (make-marker)) (save-point (point-marker)))
(set-marker end-region-mark end-region)
(goto-char beg-region)
(beginning-of-line)
(if (not arg) ;comment the region
(let ( ( com ( regexp-quote cobol-comment-region ) ) ) ;uncomment the region
(if ( looking-at com )
(progn (goto-char (- (match-end 0) 1))
(delete-backward-char 2)))
(while (and (= (forward-line 1) 0)
(< (point) end-region-mark))
(if (looking-at com)
(progn (goto-char (- (match-end 0) 1))
(delete-backward-char 2))))))
(goto-char save-point)
(set-marker end-region-mark nil)
(set-marker save-point nil)))
(defun cobol-abbrev-start ()
"Typing \";\\[help-command]\" or \";?\" lists all the cobol abbrevs.
Any other key combination is executed normally." ;\\[help-command] is just a way to print the value of the variable help-char.
(interactive)
(let (c)
(insert last-command-char)
(if (or (= (setq c (read-char)) ??) ;insert char if not equal to `?'
(= c help-char))
(cobol-abbrev-help)
(setq unread-command-events c))))
(defun cobol-abbrev-help ()
"List the currently defined abbrevs in Cobol mode."
(interactive)
(message "Listing abbrev table...")
(require 'abbrevlist)
(list-one-abbrev-table cobol-mode-abbrev-table "*Help*")
(message "Listing abbrev table...done"))
(defun cobol-column-ruler ()
"Inserts a column ruler momentarily above current line, till next keystroke.
The ruler is defined by the value of cobol-column-ruler.
The key typed is executed unless it is SPC."
(interactive)
(momentary-string-display
cobol-column-ruler (save-excursion (beginning-of-line) (point))
nil "Type SPC or any command to erase ruler."))
(defun cobol-window-create ()
"Makes the window 72 columns wide."
(interactive)
(let ((window-min-width 2))
(split-window-horizontally 73))
(other-window 1)
(switch-to-buffer " cobol-window-extra" t)
(select-window (previous-window)))
(defun cobol-split-line ()
"Break line at point and insert continuation marker and alignment."
(interactive)
(delete-horizontal-space)
(if (save-excursion (beginning-of-line) (looking-at comment-line-start-skip))
(insert ?\n comment-line-start ?\ )
(insert ?\n cobol-continuation-char))
(cobol-indent-line))
(defun delete-horizontal-regexp (chars)
"Delete all characters in CHARS around point.
CHARS is like the inside of a [...] in a regular expression
except that ] is never special and \ quotes ^, - or \."
(interactive "*s")
(skip-chars-backward chars)
(delete-region (point) (progn (skip-chars-forward chars) (point))))
(defun cobol-electric-line-number (arg)
"Self insert, but if part of a Cobol line number indent it automatically.
Auto-indent does not happen if a numeric arg is used."
(interactive "P")
(if (or arg (not cobol-electric-line-number))
(self-insert-command arg)
(if (or (save-excursion (re-search-backward "[^ \t0-9]"
(save-excursion
(beginning-of-line)
(point))
t)) ;not a line number
(looking-at "[0-9]")) ;within a line number
(insert last-command-char)
(skip-chars-backward " \t")
(insert last-command-char)
(cobol-indent-line))))
(defun beginning-of-cobol-subprogram ()
"Moves point to the beginning of the current cobol subprogram."
(interactive)
(let ((case-fold-search t))
(beginning-of-line -1)
(re-search-backward "^[ \t0-9]*end\\b[ \t]*[^ \t=(a-z]" nil 'move)
(if (looking-at "^[ \t0-9]*end\\b[ \t]*[^ \t=(a-z]")
(forward-line 1))))
(defun end-of-cobol-subprogram ()
"Moves point to the end of the current cobol subprogram."
(interactive)
(let ((case-fold-search t))
(beginning-of-line 2)
(re-search-forward "^[ \t0-9]*end\\b[ \t]*[^ \t=(a-z]" nil 'move)
(goto-char (match-beginning 0))
(forward-line 1)))
(defun mark-cobol-subprogram ()
"Put mark at end of cobol subprogram, point at beginning.
The marks are pushed."
(interactive)
(end-of-cobol-subprogram)
(push-mark (point))
(beginning-of-cobol-subprogram))
(defun cobol-previous-statement ()
"Moves point to beginning of the previous cobol statement.
Returns 'first-statement if that statement is the first
non-comment Cobol statement in the file, and nil otherwise."
(interactive)
(let (not-first-statement continue-test)
(beginning-of-line)
(setq continue-test
(looking-at
(concat " " (regexp-quote (char-to-string
cobol-continuation-char)))))
(while (and (setq not-first-statement (= (forward-line -1) 0))
;; (or (looking-at comment-line-start-skip))
(looking-at "[ \t]*$")))
(cond ((and continue-test
(not not-first-statement))
(message "Incomplete continuation statement."))
(continue-test
(cobol-previous-statement))
((not not-first-statement)
'first-statement))))
(defun cobol-next-statement ()
"Moves point to beginning of the next cobol statement.
Returns 'last-statement if that statement is the last
non-comment Cobol statement in the file, and nil otherwise."
(interactive)
(let (not-last-statement)
(beginning-of-line)
(while (and (setq not-last-statement (= (forward-line 1) 0))
(or (looking-at comment-line-start-skip)
(looking-at "[ \t]*$")
)))
(if (not not-last-statement)
'last-statement)))
(defun cobol-indent-line ()
"Indents current cobol line based on its contents and on previous lines."
(interactive)
; (defvar cfi 0)
; (setq cfi (calculate-cobol-indent))
; (message-box "cfi is %d\nCurrent indentation is %d" cfi (current-indentation))
; (if (and (not (eq last-command 'cobol-indent-line))
; (not (eq cfi nil)))
; (if (not (= cfi (current-indentation)))
; (message-box "cfi is %d Current indentation is %d" cfi (current-indentation))
; (beginning-of-line)
; ))
(if (or (eq last-command 'cobol-indent-line) ; if we just did a tab
(let (atws)
(insert-char ?\n 1)
(forward-char -1)
(beginning-of-line)
(setq atws (looking-at "[ \t]*$"))
(end-of-line)
(delete-char 1)
(not atws)))
(insert-char (if (stringp cobol-comment-indent-char)
(aref cobol-comment-indent-char 0)
cobol-comment-indent-char)
(- cobol-indent-increment
(% (+ (current-column) 1) cobol-indent-increment)))
(let ((do-another-tab nil)
(cfi (calculate-cobol-indent))
(cur-col (current-column))) ; we did NOT just do a tab
(save-excursion
(beginning-of-line)
(if (not (= cfi (current-indentation)))
(cobol-indent-to-column cfi)
; else the line is indented correctly; check for a comment
(beginning-of-line)
(if (re-search-forward comment-start-skip
(save-excursion (end-of-line) (point)) 'move)
(cobol-indent-comment)
; else not looking at a comment; make another tab
(if (= cur-col cfi)
(setq do-another-tab 't)))))
(if do-another-tab
(insert-char (if (stringp cobol-comment-indent-char)
(aref cobol-comment-indent-char 0)
cobol-comment-indent-char)
(- cobol-indent-increment
(% (+ (current-column) 1)
cobol-indent-increment))))
;; Never leave point in left margin.
(if (< (current-column) cfi)
(move-to-column cfi)))))
(defun cobol-indent-subprogram ()
"Properly indents the Cobol subprogram which contains point."
(interactive)
(save-excursion
(mark-cobol-subprogram)
(message "Indenting subprogram...")
(indent-region (point) (mark) nil))
(message "Indenting subprogram...done."))
(defun calculate-cobol-indent ()
"Calculates the cobol indent column based on previous lines."
(let (icol first-statement (special-col nil) (case-fold-search t))
; (let (icol first-statement
; (special-col nil)
; (case-fold-search t)
; (data-level nil))
(save-excursion
(setq first-statement (cobol-previous-statement))
(if first-statement
(setq icol cobol-minimum-statement-indent)
(progn
; (setq icol (cobol-current-line-indentation))
(if (= (point) (point-min))
(setq icol cobol-minimum-statement-indent)
(setq icol (cobol-current-line-indentation)))
(if (looking-at "[ \t]*\\*") ; if looking a at comment
(setq special-col 't))
(skip-chars-forward " \t0-9")
(cond ((looking-at "if[ \t]*(")
(if (or (looking-at ".*)[ \t]*then\\b[ \t]*[^ \t(=a-z0-9]")
(let (then-test) ;multi-line if-then
(while (and (= (forward-line 1) 0) ;search forward for then
(looking-at " [^ 0]")
(not (setq then-test (looking-at ".*then\\b[ \t]*[^ \t(=a-z0-9]")))))
then-test))
(setq icol (+ icol cobol-if-indent))))
((looking-at "\\(else\\|elseif\\)\\b")
(setq icol (+ icol cobol-if-indent)))
((looking-at "do\\b")
(setq icol (+ icol cobol-do-indent)))))))
(save-excursion
(beginning-of-line)
(cond ((looking-at "[ \t]*$")) ; blank lines do nothing
((looking-at comment-line-start-skip) ; junk for comments
(setq icol cobol-comment-line-column)
(setq special-col t))
((looking-at (concat " "
(regexp-quote (char-to-string cobol-continuation-char))))
(setq icol cobol-continuation-indent)
(setq special-col t))
(first-statement) ;if first in the file, don't do anything
((and cobol-check-all-num-for-matching-do
(looking-at "[ \t]*[0-9]+")
(cobol-check-for-matching-do))
(setq icol (- icol cobol-do-indent)))
(t
(skip-chars-forward " \t") ; skip to first real stuff
(cond
;;; The following are for special names that MUST
;;; start in area A (column 8-11)
((looking-at "[a-z]+ +division") ; divisions in area A
(setq icol cobol-minimum-statement-indent))
((looking-at "[-0-9a-z]+ +section") ; sections in area A
(setq icol cobol-minimum-statement-indent))
;; this SHOULD get paragraph names
((looking-at "[-a-z0-9]+\\.") ; paragraphs
(setq icol cobol-minimum-statement-indent))
((looking-at "fd ") ; fd's in area A
(setq icol cobol-minimum-statement-indent))
((looking-at "sd ") ; sd's in area A
(setq icol cobol-minimum-statement-indent))
((looking-at "rd ") ; rd's in area A
(setq icol cobol-minimum-statement-indent))
((looking-at "cd ") ; cd's in area A
(setq icol cobol-minimum-statement-indent))
((looking-at "01 ") ; 01 level numbers in A too
(setq icol cobol-minimum-statement-indent))
((looking-at "77 ") ; and 77 level numbers
(setq icol cobol-minimum-statement-indent))
((looking-at "88 ") ; and 88 level numbers, too
(if (cobol-match-last-statement "88 ")
(setq icol
(cobol-last-statement-indent))
(setq icol (+ cobol-indent-increment (cobol-last-statement-indent)))))
;;; the following are for end-of-block detection
;; ((looking-at "end-if\\b") ;; No good if it ends with a period
((looking-at "end-if")
(setq icol (- icol cobol-if-indent)))
((looking-at "else\\b")
(setq icol (- icol cobol-if-indent)))
((looking-at "end-[a-z]") ;; Cover all "end-*" scope delimiters
(setq icol (- icol cobol-if-indent)))
((and (looking-at "continue\\b")
(cobol-check-for-matching-do))
(setq icol (- icol cobol-do-indent)))
((looking-at "end[ \t]*do\\b")
(setq icol (- icol cobol-do-indent)))
((and (looking-at "end\\b[ \t]*[^ \t=(a-z]")
(not (= icol cobol-minimum-statement-indent)))
(message "Warning: `end' not in column %d. Probably an unclosed block."
cobol-minimum-statement-indent))
(t ; in the case of normal lines
nil)
))))
(if special-col
icol
(max cobol-minimum-statement-indent icol))))
(defun cobol-match-last-statement (arg)
"Match the start of line of the last non-comment/non-blank statement.
Return `t' or `nil`."
(interactive)
(defvar com " *")
(save-excursion
(beginning-of-line)
(forward-line -1)
(while (or (looking-at (regexp-quote com))
(looking-at "[ \t]*$"))
(forward-line -1))
(skip-chars-forward " \t")
(if (looking-at arg)
t)))
(defun cobol-last-statement-indent ()
"Returns the column of the last non-comment statement"
(interactive)
(defvar com " *")
(defvar col 0)
(save-excursion
(beginning-of-line)
(forward-line -1)
(while (or (looking-at (regexp-quote com))
(looking-at "[ \t]*$"))
(forward-line -1))
(skip-chars-forward " \t")
(looking-at "A-Za-z0-9")
(setq col (current-column)))
; (message-box "col = %d" col)
(max col cobol-minimum-area-b-indent))
(defun current-line ()
"Return the vertical position of point..."
(interactive)
(defvar cur-line 0)
(save-excursion
(setq cur-line
(+ (count-lines (point-min) (point))
(if (= (current-column) 0) 1 0))))
; (message-box "Current line: %d" cur-line)
cur-line)
(defun cobol-current-line-indentation ()
"Indentation of current line, ignoring Cobol line number or continuation.
This is the column position of the first non-whitespace character
aside from the line number and/or column 5 line-continuation character.
For comment lines, returns indentation of the first
non-indentation text within the comment."
; (message-box "current indent = %d" (current-indentation))
(current-indentation))
; (save-excursion
; (beginning-of-line)
; (cond ((looking-at comment-line-start-skip)
; (goto-char (match-end 0))
; (skip-chars-forward
; (if (stringp cobol-comment-indent-char)
; cobol-comment-indent-char
; (char-to-string cobol-comment-indent-char))))
; ((looking-at " [^ 0\n]")
; (goto-char (match-end 0)))
; (t
; ;; Move past line number.
; (move-to-column 5)))
; ;; Move past whitespace.
; ; (message-box "1 current line = %d" (current-line))
; (forward-line 1)
; ; (message-box "2 current line = %d" (current-line))
; (beginning-of-line)
; (skip-chars-forward " \t")
; (current-column)))
(defun cobol-indent-to-column (col)
"Indents current line with spaces to column COL.
notes: 1) A minus sign character in column 6 indicates a continuation
line, and this continuation character is retained on indentation;
2) If cobol-continuation-char is the first non-whitespace character,
this is a continuation line;
3) A non-continuation line which has a number as the first
non-whitespace character is a numbered line."
(save-excursion
(beginning-of-line)
(if (looking-at comment-line-start-skip)
(if cobol-comment-indent-style
(let ((char (if (stringp cobol-comment-indent-char)
(aref cobol-comment-indent-char 0)
cobol-comment-indent-char)))
(delete-horizontal-space)
(insert-char char cobol-comment-line-column)))
;; (if (looking-at " [^ 0\n]")
;; (forward-char 8)
;; (delete-horizontal-space)
;; ;; Put line number in columns 0-4
;; ;; or put continuation character in column 5.
;; (cond ((eobp))
;; ((= (following-char) cobol-continuation-char)
;; (indent-to 5)
;; (forward-char 1))
;; ((looking-at "[0-9]+")
;; (let ((extra-space (- 5 (- (match-end 0) (point)))))
;; (if (< extra-space 0)
;; (message "Warning: line number exceeds 5-digit limit.")
;; (indent-to (min cobol-line-number-indent extra-space))))
;; (skip-chars-forward "0-9"))))
;; Point is now after any continuation character or line number.
;; Put body of statement where specified.
(delete-horizontal-space)
(indent-to col)
;; Indent any comment following code on the same line.
;; (if (re-search-forward comment-start-skip
;; (save-excursion (end-of-line) (point)) t)