lwall@netlabs.com (Larry Wall) (04/17/91)
Submitted-by: Larry Wall <lwall@netlabs.com>
Posting-number: Volume 18, Issue 39
Archive-name: perl/part21
[There are 36 kits for perl version 4.0.]
#! /bin/sh
# Make a new directory for the perl sources, cd to it, and run kits 1
# thru 36 through sh. When all 36 kits have been run, read README.
echo "This is perl 4.0 kit 21 (of 36). If kit 21 is complete, the line"
echo '"'"End of kit 21 (of 36)"'" will echo at the end.'
echo ""
export PATH || (echo "You didn't use sh, you clunch." ; kill $$)
mkdir emacs t t/op 2>/dev/null
echo Extracting emacs/perl-mode.el
sed >emacs/perl-mode.el <<'!STUFFY!FUNK!' -e 's/X//'
X;; Perl code editing commands for GNU Emacs
X;; Copyright (C) 1990 William F. Mann
X;; Adapted from C code editing commands 'c-mode.el', Copyright 1987 by the
X;; Free Software Foundation, under terms of its General Public License.
X
X;; This file may be made part of GNU Emacs at the option of the FSF, or
X;; of the perl distribution at the option of Larry Wall.
X
X;; This code is distributed in the hope that it will be useful,
X;; but WITHOUT ANY WARRANTY. No author or distributor
X;; accepts responsibility to anyone for the consequences of using it
X;; or for whether it serves any particular purpose or works at all,
X;; unless he says so in writing. Refer to the GNU Emacs General Public
X;; License for full details.
X
X;; Everyone is granted permission to copy, modify and redistribute
X;; this code, but only under the conditions described in the
X;; GNU Emacs General Public License. A copy of this license is
X;; supposed to have been given to you along with GNU Emacs so you
X;; can know your rights and responsibilities. It should be in a
X;; file named COPYING. Among other things, the copyright notice
X;; and this notice must be preserved on all copies.
X
X;; To enter perl-mode automatically, add (autoload 'perl-mode "perl-mode")
X;; to your .emacs file and change the first line of your perl script to:
X;; #!/usr/bin/perl -- # -*-Perl-*-
X;; With argments to perl:
X;; #!/usr/bin/perl -P- # -*-Perl-*-
X;; To handle files included with do 'filename.pl';, add something like
X;; (setq auto-mode-alist (append (list (cons "\\.pl$" 'perl-mode))
X;; auto-mode-alist))
X;; to your .emacs file; otherwise the .pl suffix defaults to prolog-mode.
X
X;; This code is based on the 18.53 version c-mode.el, with extensive
X;; rewriting. Most of the features of c-mode survived intact.
X
X;; I added a new feature which adds functionality to TAB; it is controlled
X;; by the variable perl-tab-to-comment. With it enabled, TAB does the
X;; first thing it can from the following list: change the indentation;
X;; move past leading white space; delete an empty comment; reindent a
X;; comment; move to end of line; create an empty comment; tell you that
X;; the line ends in a quoted string, or has a # which should be a \#.
X
X;; If your machine is slow, you may want to remove some of the bindings
X;; to electric-perl-terminator. I changed the indenting defaults to be
X;; what Larry Wall uses in perl/lib, but left in all the options.
X
X;; I also tuned a few things: comments and labels starting in column
X;; zero are left there by indent-perl-exp; perl-beginning-of-function
X;; goes back to the first open brace/paren in column zero, the open brace
X;; in 'sub ... {', or the equal sign in 'format ... ='; indent-perl-exp
X;; (meta-^q) indents from the current line through the close of the next
X;; brace/paren, so you don't need to start exactly at a brace or paren.
X
X;; It may be good style to put a set of redundant braces around your
X;; main program. This will let you reindent it with meta-^q.
X
X;; Known problems (these are all caused by limitations in the elisp
X;; parsing routine (parse-partial-sexp), which was not designed for such
X;; a rich language; writing a more suitable parser would be a big job):
X;; 1) Regular expression delimitors do not act as quotes, so special
X;; characters such as `'"#:;[](){} may need to be backslashed
X;; in regular expressions and in both parts of s/// and tr///.
X;; 2) The globbing syntax <pattern> is not recognized, so special
X;; characters in the pattern string must be backslashed.
X;; 3) The q, qq, and << quoting operators are not recognized; see below.
X;; 4) \ (backslash) always quotes the next character, so '\' is
X;; treated as the start of a string. Use "\\" as a work-around.
X;; 5) To make variables such a $' and $#array work, perl-mode treats
X;; $ just like backslash, so '$' is the same as problem 5.
X;; 6) Unfortunately, treating $ like \ makes ${var} be treated as an
X;; unmatched }. See below.
X;; 7) When ' (quote) is used as a package name separator, perl-mode
X;; doesn't understand, and thinks it is seeing a quoted string.
X
X;; Here are some ugly tricks to bypass some of these problems: the perl
X;; expression /`/ (that's a back-tick) usually evaluates harmlessly,
X;; but will trick perl-mode into starting a quoted string, which
X;; can be ended with another /`/. Assuming you have no embedded
X;; back-ticks, this can used to help solve problem 3:
X;;
X;; /`/; $ugly = q?"'$?; /`/;
X;;
X;; To solve problem 6, add a /{/; before each use of ${var}:
X;; /{/; while (<${glob_me}>) ...
X;;
X;; Problem 7 is even worse, but this 'fix' does work :-(
X;; $DB'stop#'
X;; [$DB'line#'
X;; ] =~ s/;9$//;
X
X
X(defvar perl-mode-abbrev-table nil
X "Abbrev table in use in perl-mode buffers.")
X(define-abbrev-table 'perl-mode-abbrev-table ())
X
X(defvar perl-mode-map ()
X "Keymap used in Perl mode.")
X(if perl-mode-map
X ()
X (setq perl-mode-map (make-sparse-keymap))
X (define-key perl-mode-map "{" 'electric-perl-terminator)
X (define-key perl-mode-map "}" 'electric-perl-terminator)
X (define-key perl-mode-map ";" 'electric-perl-terminator)
X (define-key perl-mode-map ":" 'electric-perl-terminator)
X (define-key perl-mode-map "\e\C-a" 'perl-beginning-of-function)
X (define-key perl-mode-map "\e\C-e" 'perl-end-of-function)
X (define-key perl-mode-map "\e\C-h" 'mark-perl-function)
X (define-key perl-mode-map "\e\C-q" 'indent-perl-exp)
X (define-key perl-mode-map "\177" 'backward-delete-char-untabify)
X (define-key perl-mode-map "\t" 'perl-indent-command))
X
X(autoload 'c-macro-expand "cmacexp"
X "Display the result of expanding all C macros occurring in the region.
XThe expansion is entirely correct because it uses the C preprocessor."
X t)
X
X(defvar perl-mode-syntax-table nil
X "Syntax table in use in perl-mode buffers.")
X
X(if perl-mode-syntax-table
X ()
X (setq perl-mode-syntax-table (make-syntax-table (standard-syntax-table)))
X (modify-syntax-entry ?\n ">" perl-mode-syntax-table)
X (modify-syntax-entry ?# "<" perl-mode-syntax-table)
X (modify-syntax-entry ?$ "/" perl-mode-syntax-table)
X (modify-syntax-entry ?% "." perl-mode-syntax-table)
X (modify-syntax-entry ?& "." perl-mode-syntax-table)
X (modify-syntax-entry ?\' "\"" perl-mode-syntax-table)
X (modify-syntax-entry ?* "." perl-mode-syntax-table)
X (modify-syntax-entry ?+ "." perl-mode-syntax-table)
X (modify-syntax-entry ?- "." perl-mode-syntax-table)
X (modify-syntax-entry ?/ "." perl-mode-syntax-table)
X (modify-syntax-entry ?< "." perl-mode-syntax-table)
X (modify-syntax-entry ?= "." perl-mode-syntax-table)
X (modify-syntax-entry ?> "." perl-mode-syntax-table)
X (modify-syntax-entry ?\\ "\\" perl-mode-syntax-table)
X (modify-syntax-entry ?` "\"" perl-mode-syntax-table)
X (modify-syntax-entry ?| "." perl-mode-syntax-table)
X)
X
X(defconst perl-indent-level 4
X "*Indentation of Perl statements with respect to containing block.")
X(defconst perl-continued-statement-offset 4
X "*Extra indent for lines not starting new statements.")
X(defconst perl-continued-brace-offset -4
X "*Extra indent for substatements that start with open-braces.
XThis is in addition to perl-continued-statement-offset.")
X(defconst perl-brace-offset 0
X "*Extra indentation for braces, compared with other text in same context.")
X(defconst perl-brace-imaginary-offset 0
X "*Imagined indentation of an open brace that actually follows a statement.")
X(defconst perl-label-offset -2
X "*Offset of Perl label lines relative to usual indentation.")
X
X(defconst perl-tab-always-indent t
X "*Non-nil means TAB in Perl mode should always indent the current line,
Xregardless of where in the line point is when the TAB command is used.")
X
X(defconst perl-tab-to-comment t
X "*Non-nil means that for lines which don't need indenting, TAB will
Xeither indent an existing comment, move to end-of-line, or if at end-of-line
Xalready, create a new comment.")
X
X(defconst perl-nochange ";?#\\|\f\\|\\s(\\|\\(\\w\\|\\s_\\)+:"
X "*Lines starting with this regular expression will not be auto-indented.")
X
X(defun perl-mode ()
X "Major mode for editing Perl code.
XExpression and list commands understand all Perl brackets.
XTab indents for Perl code.
XComments are delimited with # ... \\n.
XParagraphs are separated by blank lines only.
XDelete converts tabs to spaces as it moves back.
X\\{perl-mode-map}
XVariables controlling indentation style:
X perl-tab-always-indent
X Non-nil means TAB in Perl mode should always indent the current line,
X regardless of where in the line point is when the TAB command is used.
X perl-tab-to-comment
X Non-nil means that for lines which don't need indenting, TAB will
X either delete an empty comment, indent an existing comment, move
X to end-of-line, or if at end-of-line already, create a new comment.
X perl-nochange
X Lines starting with this regular expression will not be auto-indented.
X perl-indent-level
X Indentation of Perl statements within surrounding block.
X The surrounding block's indentation is the indentation
X of the line on which the open-brace appears.
X perl-continued-statement-offset
X Extra indentation given to a substatement, such as the
X then-clause of an if or body of a while.
X perl-continued-brace-offset
X Extra indentation given to a brace that starts a substatement.
X This is in addition to perl-continued-statement-offset.
X perl-brace-offset
X Extra indentation for line if it starts with an open brace.
X perl-brace-imaginary-offset
X An open brace following other text is treated as if it were
X this far to the right of the start of its line.
X perl-label-offset
X Extra indentation for line that is a label.
X
XVarious indentation styles: K&R BSD BLK GNU LW
X perl-indent-level 5 8 0 2 4
X perl-continued-statement-offset 5 8 4 2 4
X perl-continued-brace-offset 0 0 0 0 -4
X perl-brace-offset -5 -8 0 0 0
X perl-brace-imaginary-offset 0 0 4 0 0
X perl-label-offset -5 -8 -2 -2 -2
X
XTurning on Perl mode calls the value of the variable perl-mode-hook with no
Xargs, if that value is non-nil."
X (interactive)
X (kill-all-local-variables)
X (use-local-map perl-mode-map)
X (setq major-mode 'perl-mode)
X (setq mode-name "Perl")
X (setq local-abbrev-table perl-mode-abbrev-table)
X (set-syntax-table perl-mode-syntax-table)
X (make-local-variable 'paragraph-start)
X (setq paragraph-start (concat "^$\\|" page-delimiter))
X (make-local-variable 'paragraph-separate)
X (setq paragraph-separate paragraph-start)
X (make-local-variable 'paragraph-ignore-fill-prefix)
X (setq paragraph-ignore-fill-prefix t)
X (make-local-variable 'indent-line-function)
X (setq indent-line-function 'perl-indent-line)
X (make-local-variable 'require-final-newline)
X (setq require-final-newline t)
X (make-local-variable 'comment-start)
X (setq comment-start "# ")
X (make-local-variable 'comment-end)
X (setq comment-end "")
X (make-local-variable 'comment-column)
X (setq comment-column 32)
X (make-local-variable 'comment-start-skip)
X (setq comment-start-skip "\\(^\\|\\s-\\);?#+ *")
X (make-local-variable 'comment-indent-hook)
X (setq comment-indent-hook 'perl-comment-indent)
X (make-local-variable 'parse-sexp-ignore-comments)
X (setq parse-sexp-ignore-comments nil)
X (run-hooks 'perl-mode-hook))
X
X;; This is used by indent-for-comment
X;; to decide how much to indent a comment in Perl code
X;; based on its context.
X(defun perl-comment-indent ()
X (if (and (bolp) (not (eolp)))
X 0 ;Existing comment at bol stays there.
X (save-excursion
X (skip-chars-backward " \t")
X (max (1+ (current-column)) ;Else indent at comment column
X comment-column)))) ; except leave at least one space.
X
X(defun electric-perl-terminator (arg)
X "Insert character. If at end-of-line, and not in a comment or a quote,
Xcorrect the line's indentation."
X (interactive "P")
X (let ((insertpos (point)))
X (and (not arg) ; decide whether to indent
X (eolp)
X (save-excursion
X (beginning-of-line)
X (and (not ; eliminate comments quickly
X (re-search-forward comment-start-skip insertpos t))
X (or (/= last-command-char ?:)
X ;; Colon is special only after a label ....
X (looking-at "\\s-*\\(\\w\\|\\s_\\)+$"))
X (let ((pps (parse-partial-sexp
X (perl-beginning-of-function) insertpos)))
X (not (or (nth 3 pps) (nth 4 pps) (nth 5 pps))))))
X (progn ; must insert, indent, delete
X (insert-char last-command-char 1)
X (perl-indent-line)
X (delete-char -1))))
X (self-insert-command (prefix-numeric-value arg)))
X
X;; not used anymore, but may be useful someday:
X;;(defun perl-inside-parens-p ()
X;; (condition-case ()
X;; (save-excursion
X;; (save-restriction
X;; (narrow-to-region (point)
X;; (perl-beginning-of-function))
X;; (goto-char (point-max))
X;; (= (char-after (or (scan-lists (point) -1 1) (point-min))) ?\()))
X;; (error nil)))
X
X(defun perl-indent-command (&optional arg)
X "Indent current line as Perl code, or optionally, insert a tab character.
X
XWith an argument, indent the current line, regardless of other options.
X
XIf perl-tab-always-indent is nil and point is not in the indentation
Xarea at the beginning of the line, simply insert a tab.
X
XOtherwise, indent the current line. If point was within the indentation
Xarea it is moved to the end of the indentation area. If the line was
Xalready indented properly and point was not within the indentation area,
Xand if perl-tab-to-comment is non-nil (the default), then do the first
Xpossible action from the following list:
X
X 1) delete an empty comment
X 2) move forward to start of comment, indenting if necessary
X 3) move forward to end of line
X 4) create an empty comment
X 5) move backward to start of comment, indenting if necessary."
X (interactive "P")
X (if arg ; If arg, just indent this line
X (perl-indent-line "\f")
X (if (and (not perl-tab-always-indent)
X (<= (current-column) (current-indentation)))
X (insert-tab)
X (let (bof lsexp delta (oldpnt (point)))
X (beginning-of-line)
X (setq lsexp (point))
X (setq bof (perl-beginning-of-function))
X (goto-char oldpnt)
X (setq delta (perl-indent-line "\f\\|;?#" bof))
X (and perl-tab-to-comment
X (= oldpnt (point)) ; done if point moved
X (if (listp delta) ; if line starts in a quoted string
X (setq lsexp (or (nth 2 delta) bof))
X (= delta 0)) ; done if indenting occurred
X (let (eol state)
X (end-of-line)
X (setq eol (point))
X (if (= (char-after bof) ?=)
X (if (= oldpnt eol)
X (message "In a format statement"))
X (setq state (parse-partial-sexp lsexp eol))
X (if (nth 3 state)
X (if (= oldpnt eol) ; already at eol in a string
X (message "In a string which starts with a %c."
X (nth 3 state)))
X (if (not (nth 4 state))
X (if (= oldpnt eol) ; no comment, create one?
X (indent-for-comment))
X (beginning-of-line)
X (if (re-search-forward comment-start-skip eol 'move)
X (if (eolp)
X (progn ; kill existing comment
X (goto-char (match-beginning 0))
X (skip-chars-backward " \t")
X (kill-region (point) eol))
X (if (or (< oldpnt (point)) (= oldpnt eol))
X (indent-for-comment) ; indent existing comment
X (end-of-line)))
X (if (/= oldpnt eol)
X (end-of-line)
X (message "Use backslash to quote # characters.")
X (ding t))))))))))))
X
X(defun perl-indent-line (&optional nochange parse-start)
X "Indent current line as Perl code. Return the amount the indentation
Xchanged by, or (parse-state) if line starts in a quoted string."
X (let ((case-fold-search nil)
X (pos (- (point-max) (point)))
X (bof (or parse-start (save-excursion (perl-beginning-of-function))))
X beg indent shift-amt)
X (beginning-of-line)
X (setq beg (point))
X (setq shift-amt
X (cond ((= (char-after bof) ?=) 0)
X ((listp (setq indent (calculate-perl-indent bof))) indent)
X ((looking-at (or nochange perl-nochange)) 0)
X (t
X (skip-chars-forward " \t\f")
X (cond ((looking-at "\\(\\w\\|\\s_\\)+:")
X (setq indent (max 1 (+ indent perl-label-offset))))
X ((= (following-char) ?})
X (setq indent (- indent perl-indent-level)))
X ((= (following-char) ?{)
X (setq indent (+ indent perl-brace-offset))))
X (- indent (current-column)))))
X (skip-chars-forward " \t\f")
X (if (and (numberp shift-amt) (/= 0 shift-amt))
X (progn (delete-region beg (point))
X (indent-to indent)))
X ;; If initial point was within line's indentation,
X ;; position after the indentation. Else stay at same point in text.
X (if (> (- (point-max) pos) (point))
X (goto-char (- (point-max) pos)))
X shift-amt))
X
X(defun calculate-perl-indent (&optional parse-start)
X "Return appropriate indentation for current line as Perl code.
XIn usual case returns an integer: the column to indent to.
XReturns (parse-state) if line starts inside a string."
X (save-excursion
X (beginning-of-line)
X (let ((indent-point (point))
X (case-fold-search nil)
X (colon-line-end 0)
X state containing-sexp)
X (if parse-start ;used to avoid searching
X (goto-char parse-start)
X (perl-beginning-of-function))
X (while (< (point) indent-point) ;repeat until right sexp
X (setq parse-start (point))
X (setq state (parse-partial-sexp (point) indent-point 0))
X; state = (depth_in_parens innermost_containing_list last_complete_sexp
X; string_terminator_or_nil inside_commentp following_quotep
X; minimum_paren-depth_this_scan)
X; Parsing stops if depth in parentheses becomes equal to third arg.
X (setq containing-sexp (nth 1 state)))
X (cond ((nth 3 state) state) ; In a quoted string?
X ((null containing-sexp) ; Line is at top level.
X (skip-chars-forward " \t\f")
X (if (= (following-char) ?{)
X 0 ; move to beginning of line if it starts a function body
X ;; indent a little if this is a continuation line
X (perl-backward-to-noncomment)
X (if (or (bobp)
X (memq (preceding-char) '(?\; ?\})))
X 0 perl-continued-statement-offset)))
X ((/= (char-after containing-sexp) ?{)
X ;; line is expression, not statement:
X ;; indent to just after the surrounding open.
X (goto-char (1+ containing-sexp))
X (current-column))
X (t
X ;; Statement level. Is it a continuation or a new statement?
X ;; Find previous non-comment character.
X (perl-backward-to-noncomment)
X ;; Back up over label lines, since they don't
X ;; affect whether our line is a continuation.
X (while (or (eq (preceding-char) ?\,)
X (and (eq (preceding-char) ?:)
X (memq (char-syntax (char-after (- (point) 2)))
X '(?w ?_))))
X (if (eq (preceding-char) ?\,)
X (perl-backward-to-start-of-continued-exp containing-sexp))
X (beginning-of-line)
X (perl-backward-to-noncomment))
X ;; Now we get the answer.
X (if (not (memq (preceding-char) '(?\; ?\} ?\{)))
X ;; This line is continuation of preceding line's statement;
X ;; indent perl-continued-statement-offset more than the
X ;; previous line of the statement.
X (progn
X (perl-backward-to-start-of-continued-exp containing-sexp)
X (+ perl-continued-statement-offset (current-column)
X (if (save-excursion (goto-char indent-point)
X (looking-at "[ \t]*{"))
X perl-continued-brace-offset 0)))
X ;; This line starts a new statement.
X ;; Position at last unclosed open.
X (goto-char containing-sexp)
X (or
X ;; If open paren is in col 0, close brace is special
X (and (bolp)
X (save-excursion (goto-char indent-point)
X (looking-at "[ \t]*}"))
X perl-indent-level)
X ;; Is line first statement after an open-brace?
X ;; If no, find that first statement and indent like it.
X (save-excursion
X (forward-char 1)
X ;; Skip over comments and labels following openbrace.
X (while (progn
X (skip-chars-forward " \t\f\n")
X (cond ((looking-at ";?#")
X (forward-line 1) t)
X ((looking-at "\\(\\w\\|\\s_\\)+:")
X (save-excursion
X (end-of-line)
X (setq colon-line-end (point)))
X (search-forward ":")))))
X ;; The first following code counts
X ;; if it is before the line we want to indent.
X (and (< (point) indent-point)
X (if (> colon-line-end (point))
X (- (current-indentation) perl-label-offset)
X (current-column))))
X ;; If no previous statement,
X ;; indent it relative to line brace is on.
X ;; For open paren in column zero, don't let statement
X ;; start there too. If perl-indent-level is zero,
X ;; use perl-brace-offset + perl-continued-statement-offset
X ;; For open-braces not the first thing in a line,
X ;; add in perl-brace-imaginary-offset.
X (+ (if (and (bolp) (zerop perl-indent-level))
X (+ perl-brace-offset perl-continued-statement-offset)
X perl-indent-level)
X ;; Move back over whitespace before the openbrace.
X ;; If openbrace is not first nonwhite thing on the line,
X ;; add the perl-brace-imaginary-offset.
X (progn (skip-chars-backward " \t")
X (if (bolp) 0 perl-brace-imaginary-offset))
X ;; If the openbrace is preceded by a parenthesized exp,
X ;; move to the beginning of that;
X ;; possibly a different line
X (progn
X (if (eq (preceding-char) ?\))
X (forward-sexp -1))
X ;; Get initial indentation of the line we are on.
X (current-indentation))))))))))
X
X(defun perl-backward-to-noncomment ()
X "Move point backward to after the first non-white-space, skipping comments."
X (interactive)
X (let (opoint stop)
X (while (not stop)
X (setq opoint (point))
X (beginning-of-line)
X (if (re-search-forward comment-start-skip opoint 'move 1)
X (progn (goto-char (match-end 1))
X (skip-chars-forward ";")))
X (skip-chars-backward " \t\f")
X (setq stop (or (bobp)
X (not (bolp))
X (forward-char -1))))))
X
X(defun perl-backward-to-start-of-continued-exp (lim)
X (if (= (preceding-char) ?\))
X (forward-sexp -1))
X (beginning-of-line)
X (if (<= (point) lim)
X (goto-char (1+ lim)))
X (skip-chars-forward " \t\f"))
X
X;; note: this may be slower than the c-mode version, but I can understand it.
X(defun indent-perl-exp ()
X "Indent each line of the Perl grouping following point."
X (interactive)
X (let* ((case-fold-search nil)
X (oldpnt (point-marker))
X (bof-mark (save-excursion
X (end-of-line 2)
X (perl-beginning-of-function)
X (point-marker)))
X eol last-mark lsexp-mark delta)
X (if (= (char-after (marker-position bof-mark)) ?=)
X (message "Can't indent a format statement")
X (message "Indenting Perl expression...")
X (save-excursion (end-of-line) (setq eol (point)))
X (save-excursion ; locate matching close paren
X (while (and (not (eobp)) (<= (point) eol))
X (parse-partial-sexp (point) (point-max) 0))
X (setq last-mark (point-marker)))
X (setq lsexp-mark bof-mark)
X (beginning-of-line)
X (while (< (point) (marker-position last-mark))
X (setq delta (perl-indent-line nil (marker-position bof-mark)))
X (if (numberp delta) ; unquoted start-of-line?
X (progn
X (if (eolp)
X (delete-horizontal-space))
X (setq lsexp-mark (point-marker))))
X (end-of-line)
X (setq eol (point))
X (if (nth 4 (parse-partial-sexp (marker-position lsexp-mark) eol))
X (progn ; line ends in a comment
X (beginning-of-line)
X (if (or (not (looking-at "\\s-*;?#"))
X (listp delta)
X (and (/= 0 delta)
X (= (- (current-indentation) delta) comment-column)))
X (if (re-search-forward comment-start-skip eol t)
X (indent-for-comment))))) ; indent existing comment
X (forward-line 1))
X (goto-char (marker-position oldpnt))
X (message "Indenting Perl expression...done"))))
X
X(defun perl-beginning-of-function (&optional arg)
X "Move backward to next beginning-of-function, or as far as possible.
XWith argument, repeat that many times; negative args move forward.
XReturns new value of point in all cases."
X (interactive "p")
X (or arg (setq arg 1))
X (if (< arg 0) (forward-char 1))
X (and (/= arg 0)
X (re-search-backward "^\\s(\\|^\\s-*sub\\b[^{]+{\\|^\\s-*format\\b[^=]*="
X nil 'move arg)
X (goto-char (1- (match-end 0))))
X (point))
X
X;; note: this routine is adapted directly from emacs lisp.el, end-of-defun;
X;; no bugs have been removed :-)
X(defun perl-end-of-function (&optional arg)
X "Move forward to next end-of-function.
XThe end of a function is found by moving forward from the beginning of one.
XWith argument, repeat that many times; negative args move backward."
X (interactive "p")
X (or arg (setq arg 1))
X (let ((first t))
X (while (and (> arg 0) (< (point) (point-max)))
X (let ((pos (point)) npos)
X (while (progn
X (if (and first
X (progn
X (forward-char 1)
X (perl-beginning-of-function 1)
X (not (bobp))))
X nil
X (or (bobp) (forward-char -1))
X (perl-beginning-of-function -1))
X (setq first nil)
X (forward-list 1)
X (skip-chars-forward " \t")
X (if (looking-at "[#\n]")
X (forward-line 1))
X (<= (point) pos))))
X (setq arg (1- arg)))
X (while (< arg 0)
X (let ((pos (point)))
X (perl-beginning-of-function 1)
X (forward-sexp 1)
X (forward-line 1)
X (if (>= (point) pos)
X (if (progn (perl-beginning-of-function 2) (not (bobp)))
X (progn
X (forward-list 1)
X (skip-chars-forward " \t")
X (if (looking-at "[#\n]")
X (forward-line 1)))
X (goto-char (point-min)))))
X (setq arg (1+ arg)))))
X
X(defun mark-perl-function ()
X "Put mark at end of Perl function, point at beginning."
X (interactive)
X (push-mark (point))
X (perl-end-of-function)
X (push-mark (point))
X (perl-beginning-of-function)
X (backward-paragraph))
X
X;;;;;;;; That's all, folks! ;;;;;;;;;
!STUFFY!FUNK!
echo Extracting regexec.c
sed >regexec.c <<'!STUFFY!FUNK!' -e 's/X//'
X/* NOTE: this is derived from Henry Spencer's regexp code, and should not
X * confused with the original package (see point 3 below). Thanks, Henry!
X */
X
X/* Additional note: this code is very heavily munged from Henry's version
X * in places. In some spots I've traded clarity for efficiency, so don't
X * blame Henry for some of the lack of readability.
X */
X
X/* $RCSfile: regexec.c,v $$Revision: 4.0.1.1 $$Date: 91/04/12 09:07:39 $
X *
X * $Log: regexec.c,v $
X * Revision 4.0.1.1 91/04/12 09:07:39 lwall
X * patch1: regexec only allocated space for 9 subexpresssions
X *
X * Revision 4.0 91/03/20 01:39:16 lwall
X * 4.0 baseline.
X *
X */
X
X/*
X * regcomp and regexec -- regsub and regerror are not used in perl
X *
X * Copyright (c) 1986 by University of Toronto.
X * Written by Henry Spencer. Not derived from licensed software.
X *
X * Permission is granted to anyone to use this software for any
X * purpose on any computer system, and to redistribute it freely,
X * subject to the following restrictions:
X *
X * 1. The author is not responsible for the consequences of use of
X * this software, no matter how awful, even if they arise
X * from defects in it.
X *
X * 2. The origin of this software must not be misrepresented, either
X * by explicit claim or by omission.
X *
X * 3. Altered versions must be plainly marked as such, and must not
X * be misrepresented as being the original software.
X *
X **** Alterations to Henry's code are...
X ****
X **** Copyright (c) 1989, Larry Wall
X ****
X **** You may distribute under the terms of the GNU General Public License
X **** as specified in the README file that comes with the perl 3.0 kit.
X *
X * Beware that some of this code is subtly aware of the way operator
X * precedence is structured in regular expressions. Serious changes in
X * regular-expression syntax might require a total rethink.
X */
X#include "EXTERN.h"
X#include "perl.h"
X#include "regcomp.h"
X
X#ifndef STATIC
X#define STATIC static
X#endif
X
X#ifdef DEBUGGING
Xint regnarrate = 0;
X#endif
X
X#define isALNUM(c) (isascii(c) && (isalpha(c) || isdigit(c) || c == '_'))
X#define isSPACE(c) (isascii(c) && isspace(c))
X#define isDIGIT(c) (isascii(c) && isdigit(c))
X#define isUPPER(c) (isascii(c) && isupper(c))
X
X/*
X * regexec and friends
X */
X
X/*
X * Global work variables for regexec().
X */
Xstatic char *regprecomp;
Xstatic char *reginput; /* String-input pointer. */
Xstatic char regprev; /* char before regbol, \n if none */
Xstatic char *regbol; /* Beginning of input, for ^ check. */
Xstatic char *regeol; /* End of input, for $ check. */
Xstatic char **regstartp; /* Pointer to startp array. */
Xstatic char **regendp; /* Ditto for endp. */
Xstatic char *reglastparen; /* Similarly for lastparen. */
Xstatic char *regtill;
X
Xstatic int regmyp_size = 0;
Xstatic char **regmystartp = Null(char**);
Xstatic char **regmyendp = Null(char**);
X
X/*
X * Forwards.
X */
XSTATIC int regtry();
XSTATIC int regmatch();
XSTATIC int regrepeat();
X
Xextern int multiline;
X
X/*
X - regexec - match a regexp against a string
X */
Xint
Xregexec(prog, stringarg, strend, strbeg, minend, screamer, safebase)
Xregister regexp *prog;
Xchar *stringarg;
Xregister char *strend; /* pointer to null at end of string */
Xchar *strbeg; /* real beginning of string */
Xint minend; /* end of match must be at least minend after stringarg */
XSTR *screamer;
Xint safebase; /* no need to remember string in subbase */
X{
X register char *s;
X register int i;
X register char *c;
X register char *string = stringarg;
X register int tmp;
X int minlen = 0; /* must match at least this many chars */
X int dontbother = 0; /* how many characters not to try at end */
X
X /* Be paranoid... */
X if (prog == NULL || string == NULL) {
X fatal("NULL regexp parameter");
X return(0);
X }
X
X if (string == strbeg) /* is ^ valid at stringarg? */
X regprev = '\n';
X else {
X regprev = stringarg[-1];
X if (!multiline && regprev == '\n')
X regprev = '\0'; /* force ^ to NOT match */
X }
X regprecomp = prog->precomp;
X /* Check validity of program. */
X if (UCHARAT(prog->program) != MAGIC) {
X FAIL("corrupted regexp program");
X }
X
X if (prog->do_folding) {
X safebase = FALSE;
X i = strend - string;
X New(1101,c,i+1,char);
X (void)bcopy(string, c, i+1);
X string = c;
X strend = string + i;
X for (s = string; s < strend; s++)
X if (isUPPER(*s))
X *s = tolower(*s);
X }
X
X /* If there is a "must appear" string, look for it. */
X s = string;
X if (prog->regmust != Nullstr &&
X (!(prog->reganch & 1) || (multiline && prog->regback >= 0)) ) {
X if (stringarg == strbeg && screamer) {
X if (screamfirst[prog->regmust->str_rare] >= 0)
X s = screaminstr(screamer,prog->regmust);
X else
X s = Nullch;
X }
X#ifndef lint
X else
X s = fbminstr((unsigned char*)s, (unsigned char*)strend,
X prog->regmust);
X#endif
X if (!s) {
X ++prog->regmust->str_u.str_useful; /* hooray */
X goto phooey; /* not present */
X }
X else if (prog->regback >= 0) {
X s -= prog->regback;
X if (s < string)
X s = string;
X minlen = prog->regback + prog->regmust->str_cur;
X }
X else if (--prog->regmust->str_u.str_useful < 0) { /* boo */
X str_free(prog->regmust);
X prog->regmust = Nullstr; /* disable regmust */
X s = string;
X }
X else {
X s = string;
X minlen = prog->regmust->str_cur;
X }
X }
X
X /* Mark beginning of line for ^ . */
X regbol = string;
X
X /* Mark end of line for $ (and such) */
X regeol = strend;
X
X /* see how far we have to get to not match where we matched before */
X regtill = string+minend;
X
X /* Allocate our backreference arrays */
X if ( regmyp_size < prog->nparens + 1 ) {
X /* Allocate or enlarge the arrays */
X regmyp_size = prog->nparens + 1;
X if ( regmyp_size < 10 ) regmyp_size = 10; /* minimum */
X if ( regmystartp ) {
X /* reallocate larger */
X Renew(regmystartp,regmyp_size,char*);
X Renew(regmyendp, regmyp_size,char*);
X }
X else {
X /* Initial allocation */
X New(1102,regmystartp,regmyp_size,char*);
X New(1102,regmyendp, regmyp_size,char*);
X }
X
X }
X
X /* Simplest case: anchored match need be tried only once. */
X /* [unless multiline is set] */
X if (prog->reganch & 1) {
X if (regtry(prog, string))
X goto got_it;
X else if (multiline) {
X if (minlen)
X dontbother = minlen - 1;
X strend -= dontbother;
X /* for multiline we only have to try after newlines */
X if (s > string)
X s--;
X while (s < strend) {
X if (*s++ == '\n') {
X if (s < strend && regtry(prog, s))
X goto got_it;
X }
X }
X }
X goto phooey;
X }
X
X /* Messy cases: unanchored match. */
X if (prog->regstart) {
X if (prog->reganch & 2) { /* we have /x+whatever/ */
X /* it must be a one character string */
X i = prog->regstart->str_ptr[0];
X while (s < strend) {
X if (*s == i) {
X if (regtry(prog, s))
X goto got_it;
X s++;
X while (s < strend && *s == i)
X s++;
X }
X s++;
X }
X }
X else if (prog->regstart->str_pok == 3) {
X /* We know what string it must start with. */
X#ifndef lint
X while ((s = fbminstr((unsigned char*)s,
X (unsigned char*)strend, prog->regstart)) != NULL)
X#else
X while (s = Nullch)
X#endif
X {
X if (regtry(prog, s))
X goto got_it;
X s++;
X }
X }
X else {
X c = prog->regstart->str_ptr;
X while ((s = ninstr(s, strend,
X c, c + prog->regstart->str_cur )) != NULL) {
X if (regtry(prog, s))
X goto got_it;
X s++;
X }
X }
X goto phooey;
X }
X if (c = prog->regstclass) {
X int doevery = (prog->reganch & 2) == 0;
X
X if (minlen)
X dontbother = minlen - 1;
X strend -= dontbother; /* don't bother with what can't match */
X tmp = 1;
X /* We know what class it must start with. */
X switch (OP(c)) {
X case ANYOF:
X c = OPERAND(c);
X while (s < strend) {
X i = UCHARAT(s);
X if (!(c[i >> 3] & (1 << (i&7)))) {
X if (tmp && regtry(prog, s))
X goto got_it;
X else
X tmp = doevery;
X }
X else
X tmp = 1;
X s++;
X }
X break;
X case BOUND:
X if (minlen)
X dontbother++,strend--;
X if (s != string) {
X i = s[-1];
X tmp = isALNUM(i);
X }
X else
X tmp = isALNUM(regprev); /* assume not alphanumeric */
X while (s < strend) {
X i = *s;
X if (tmp != isALNUM(i)) {
X tmp = !tmp;
X if (regtry(prog, s))
X goto got_it;
X }
X s++;
X }
X if ((minlen || tmp) && regtry(prog,s))
X goto got_it;
X break;
X case NBOUND:
X if (minlen)
X dontbother++,strend--;
X if (s != string) {
X i = s[-1];
X tmp = isALNUM(i);
X }
X else
X tmp = isALNUM(regprev); /* assume not alphanumeric */
X while (s < strend) {
X i = *s;
X if (tmp != isALNUM(i))
X tmp = !tmp;
X else if (regtry(prog, s))
X goto got_it;
X s++;
X }
X if ((minlen || !tmp) && regtry(prog,s))
X goto got_it;
X break;
X case ALNUM:
X while (s < strend) {
X i = *s;
X if (isALNUM(i)) {
X if (tmp && regtry(prog, s))
X goto got_it;
X else
X tmp = doevery;
X }
X else
X tmp = 1;
X s++;
X }
X break;
X case NALNUM:
X while (s < strend) {
X i = *s;
X if (!isALNUM(i)) {
X if (tmp && regtry(prog, s))
X goto got_it;
X else
X tmp = doevery;
X }
X else
X tmp = 1;
X s++;
X }
X break;
X case SPACE:
X while (s < strend) {
X if (isSPACE(*s)) {
X if (tmp && regtry(prog, s))
X goto got_it;
X else
X tmp = doevery;
X }
X else
X tmp = 1;
X s++;
X }
X break;
X case NSPACE:
X while (s < strend) {
X if (!isSPACE(*s)) {
X if (tmp && regtry(prog, s))
X goto got_it;
X else
X tmp = doevery;
X }
X else
X tmp = 1;
X s++;
X }
X break;
X case DIGIT:
X while (s < strend) {
X if (isDIGIT(*s)) {
X if (tmp && regtry(prog, s))
X goto got_it;
X else
X tmp = doevery;
X }
X else
X tmp = 1;
X s++;
X }
X break;
X case NDIGIT:
X while (s < strend) {
X if (!isDIGIT(*s)) {
X if (tmp && regtry(prog, s))
X goto got_it;
X else
X tmp = doevery;
X }
X else
X tmp = 1;
X s++;
X }
X break;
X }
X }
X else {
X if (minlen)
X dontbother = minlen - 1;
X strend -= dontbother;
X /* We don't know much -- general case. */
X do {
X if (regtry(prog, s))
X goto got_it;
X } while (s++ < strend);
X }
X
X /* Failure. */
X goto phooey;
X
X got_it:
X if ((!safebase && (prog->nparens || sawampersand)) || prog->do_folding){
X strend += dontbother; /* uncheat */
X if (safebase) /* no need for $digit later */
X s = strbeg;
X else if (strbeg != prog->subbase) {
X i = strend - string + (stringarg - strbeg);
X s = nsavestr(strbeg,i); /* so $digit will work later */
X if (prog->subbase)
X Safefree(prog->subbase);
X prog->subbase = s;
X prog->subend = s+i;
X }
X else
X s = prog->subbase;
X s += (stringarg - strbeg);
X for (i = 0; i <= prog->nparens; i++) {
X if (prog->endp[i]) {
X prog->startp[i] = s + (prog->startp[i] - string);
X prog->endp[i] = s + (prog->endp[i] - string);
X }
X }
X if (prog->do_folding)
X Safefree(string);
X }
X return(1);
X
X phooey:
X if (prog->do_folding)
X Safefree(string);
X return(0);
X}
X
X/*
X - regtry - try match at specific point
X */
Xstatic int /* 0 failure, 1 success */
Xregtry(prog, string)
Xregexp *prog;
Xchar *string;
X{
X register int i;
X register char **sp;
X register char **ep;
X
X reginput = string;
X regstartp = prog->startp;
X regendp = prog->endp;
X reglastparen = &prog->lastparen;
X prog->lastparen = 0;
X
X sp = prog->startp;
X ep = prog->endp;
X if (prog->nparens) {
X for (i = prog->nparens; i >= 0; i--) {
X *sp++ = NULL;
X *ep++ = NULL;
X }
X }
X if (regmatch(prog->program + 1) && reginput >= regtill) {
X prog->startp[0] = string;
X prog->endp[0] = reginput;
X return(1);
X } else
X return(0);
X}
X
X/*
X - regmatch - main matching routine
X *
X * Conceptually the strategy is simple: check to see whether the current
X * node matches, call self recursively to see whether the rest matches,
X * and then act accordingly. In practice we make some effort to avoid
X * recursion, in particular by going through "ordinary" nodes (that don't
X * need to know whether the rest of the match failed) by a loop instead of
X * by recursion.
X */
X/* [lwall] I've hoisted the register declarations to the outer block in order to
X * maybe save a little bit of pushing and popping on the stack. It also takes
X * advantage of machines that use a register save mask on subroutine entry.
X */
Xstatic int /* 0 failure, 1 success */
Xregmatch(prog)
Xchar *prog;
X{
X register char *scan; /* Current node. */
X char *next; /* Next node. */
X register int nextchar;
X register int n; /* no or next */
X register int ln; /* len or last */
X register char *s; /* operand or save */
X register char *locinput = reginput;
X
X nextchar = *locinput;
X scan = prog;
X#ifdef DEBUGGING
X if (scan != NULL && regnarrate)
X fprintf(stderr, "%s(\n", regprop(scan));
X#endif
X while (scan != NULL) {
X#ifdef DEBUGGING
X if (regnarrate)
X fprintf(stderr, "%s...\n", regprop(scan));
X#endif
X
X#ifdef REGALIGN
X next = scan + NEXT(scan);
X if (next == scan)
X next = NULL;
X#else
X next = regnext(scan);
X#endif
X
X switch (OP(scan)) {
X case BOL:
X if (locinput == regbol ? regprev == '\n' :
X ((nextchar || locinput < regeol) &&
X locinput[-1] == '\n') )
X {
X /* regtill = regbol; */
X break;
X }
X return(0);
X case EOL:
X if ((nextchar || locinput < regeol) && nextchar != '\n')
X return(0);
X if (!multiline && regeol - locinput > 1)
X return 0;
X /* regtill = regbol; */
X break;
X case ANY:
X if ((nextchar == '\0' && locinput >= regeol) ||
X nextchar == '\n')
X return(0);
X nextchar = *++locinput;
X break;
X case EXACTLY:
X s = OPERAND(scan);
X ln = *s++;
X /* Inline the first character, for speed. */
X if (*s != nextchar)
X return(0);
X if (regeol - locinput < ln)
X return 0;
X if (ln > 1 && bcmp(s, locinput, ln) != 0)
X return(0);
X locinput += ln;
X nextchar = *locinput;
X break;
X case ANYOF:
X s = OPERAND(scan);
X if (nextchar < 0)
X nextchar = UCHARAT(locinput);
X if (s[nextchar >> 3] & (1 << (nextchar&7)))
X return(0);
X if (!nextchar && locinput >= regeol)
X return 0;
X nextchar = *++locinput;
X break;
X case ALNUM:
X if (!nextchar)
X return(0);
X if (!isALNUM(nextchar))
X return(0);
X nextchar = *++locinput;
X break;
X case NALNUM:
X if (!nextchar && locinput >= regeol)
X return(0);
X if (isALNUM(nextchar))
X return(0);
X nextchar = *++locinput;
X break;
X case NBOUND:
X case BOUND:
X if (locinput == regbol) /* was last char in word? */
X ln = isALNUM(regprev);
X else
X ln = isALNUM(locinput[-1]);
X n = isALNUM(nextchar); /* is next char in word? */
X if ((ln == n) == (OP(scan) == BOUND))
X return(0);
X break;
X case SPACE:
X if (!nextchar && locinput >= regeol)
X return(0);
X if (!isSPACE(nextchar))
X return(0);
X nextchar = *++locinput;
X break;
X case NSPACE:
X if (!nextchar)
X return(0);
X if (isSPACE(nextchar))
X return(0);
X nextchar = *++locinput;
X break;
X case DIGIT:
X if (!isDIGIT(nextchar))
X return(0);
X nextchar = *++locinput;
X break;
X case NDIGIT:
X if (!nextchar && locinput >= regeol)
X return(0);
X if (isDIGIT(nextchar))
X return(0);
X nextchar = *++locinput;
X break;
X case REF:
X n = ARG1(scan); /* which paren pair */
X s = regmystartp[n];
X if (!s)
X return(0);
X if (!regmyendp[n])
X return(0);
X if (s == regmyendp[n])
X break;
X /* Inline the first character, for speed. */
X if (*s != nextchar)
X return(0);
X ln = regmyendp[n] - s;
X if (locinput + ln > regeol)
X return 0;
X if (ln > 1 && bcmp(s, locinput, ln) != 0)
X return(0);
X locinput += ln;
X nextchar = *locinput;
X break;
X
X case NOTHING:
X break;
X case BACK:
X break;
X case OPEN:
X n = ARG1(scan); /* which paren pair */
X reginput = locinput;
X
X regmystartp[n] = locinput; /* for REF */
X if (regmatch(next)) {
X /*
X * Don't set startp if some later
X * invocation of the same parentheses
X * already has.
X */
X if (regstartp[n] == NULL)
X regstartp[n] = locinput;
X return(1);
X } else
X return(0);
X /* NOTREACHED */
X case CLOSE: {
X n = ARG1(scan); /* which paren pair */
X reginput = locinput;
X
X regmyendp[n] = locinput; /* for REF */
X if (regmatch(next)) {
X /*
X * Don't set endp if some later
X * invocation of the same parentheses
X * already has.
X */
X if (regendp[n] == NULL) {
X regendp[n] = locinput;
X if (n > *reglastparen)
X *reglastparen = n;
X }
X return(1);
X } else
X return(0);
X }
X /*NOTREACHED*/
X case BRANCH: {
X if (OP(next) != BRANCH) /* No choice. */
X next = NEXTOPER(scan); /* Avoid recursion. */
X else {
X do {
X reginput = locinput;
X if (regmatch(NEXTOPER(scan)))
X return(1);
X#ifdef REGALIGN
X if (n = NEXT(scan))
X scan += n;
X else
X scan = NULL;
X#else
X scan = regnext(scan);
X#endif
X } while (scan != NULL && OP(scan) == BRANCH);
X return(0);
X /* NOTREACHED */
X }
X }
X break;
X case CURLY:
X ln = ARG1(scan); /* min to match */
X n = ARG2(scan); /* max to match */
X scan = NEXTOPER(scan) + 4;
X goto repeat;
X case STAR:
X ln = 0;
X n = 0;
X scan = NEXTOPER(scan);
X goto repeat;
X case PLUS:
X /*
X * Lookahead to avoid useless match attempts
X * when we know what character comes next.
X */
X ln = 1;
X n = 0;
X scan = NEXTOPER(scan);
X repeat:
X if (OP(next) == EXACTLY)
X nextchar = *(OPERAND(next)+1);
X else
X nextchar = -1000;
X reginput = locinput;
X n = regrepeat(scan, n);
X if (!multiline && OP(next) == EOL && ln < n)
X ln = n; /* why back off? */
X while (n >= ln) {
X /* If it could work, try it. */
X if (nextchar == -1000 || *reginput == nextchar)
X if (regmatch(next))
X return(1);
X /* Couldn't or didn't -- back up. */
X n--;
X reginput = locinput + n;
X }
X return(0);
X case END:
X reginput = locinput; /* put where regtry can find it */
X return(1); /* Success! */
X default:
X printf("%x %d\n",scan,scan[1]);
X FAIL("regexp memory corruption");
X }
X
X scan = next;
X }
X
X /*
X * We get here only if there's trouble -- normally "case END" is
X * the terminating point.
X */
X FAIL("corrupted regexp pointers");
X /*NOTREACHED*/
X#ifdef lint
X return 0;
X#endif
X}
X
X/*
X - regrepeat - repeatedly match something simple, report how many
X */
X/*
X * [This routine now assumes that it will only match on things of length 1.
X * That was true before, but now we assume scan - reginput is the count,
X * rather than incrementing count on every character.]
X */
Xstatic int
Xregrepeat(p, max)
Xchar *p;
Xint max;
X{
X register char *scan;
X register char *opnd;
X register int c;
X register char *loceol = regeol;
X
X scan = reginput;
X if (max && max < loceol - scan)
X loceol = scan + max;
X opnd = OPERAND(p);
X switch (OP(p)) {
X case ANY:
X while (scan < loceol && *scan != '\n')
X scan++;
X break;
X case EXACTLY: /* length of string is 1 */
X opnd++;
X while (scan < loceol && *opnd == *scan)
X scan++;
X break;
X case ANYOF:
X c = UCHARAT(scan);
X while (scan < loceol && !(opnd[c >> 3] & (1 << (c & 7)))) {
X scan++;
X c = UCHARAT(scan);
X }
X break;
X case ALNUM:
X while (scan < loceol && isALNUM(*scan))
X scan++;
X break;
X case NALNUM:
X while (scan < loceol && !isALNUM(*scan))
X scan++;
X break;
X case SPACE:
X while (scan < loceol && isSPACE(*scan))
X scan++;
X break;
X case NSPACE:
X while (scan < loceol && !isSPACE(*scan))
X scan++;
X break;
X case DIGIT:
X while (scan < loceol && isDIGIT(*scan))
X scan++;
X break;
X case NDIGIT:
X while (scan < loceol && !isDIGIT(*scan))
X scan++;
X break;
X default: /* Oh dear. Called inappropriately. */
X FAIL("internal regexp foulup");
X /* NOTREACHED */
X }
X
X c = scan - reginput;
X reginput = scan;
X
X return(c);
X}
X
X/*
X - regnext - dig the "next" pointer out of a node
X *
X * [Note, when REGALIGN is defined there are two places in regmatch()
X * that bypass this code for speed.]
X */
Xchar *
Xregnext(p)
Xregister char *p;
X{
X register int offset;
X
X if (p == ®dummy)
X return(NULL);
X
X offset = NEXT(p);
X if (offset == 0)
X return(NULL);
X
X#ifdef REGALIGN
X return(p+offset);
X#else
X if (OP(p) == BACK)
X return(p-offset);
X else
X return(p+offset);
X#endif
X}
!STUFFY!FUNK!
echo Extracting t/op/read.t
sed >t/op/read.t <<'!STUFFY!FUNK!' -e 's/X//'
X#!./perl
X
X# $Header: read.t,v 4.0 91/03/20 01:54:16 lwall Locked $
X
Xprint "1..4\n";
X
X
Xopen(FOO,'op/read.t') || open(FOO,'t/op/read.t') || die "Can't open op.read";
Xseek(FOO,4,0);
X$got = read(FOO,$buf,4);
X
Xprint ($got == 4 ? "ok 1\n" : "not ok 1\n");
Xprint ($buf eq "perl" ? "ok 2\n" : "not ok 2 :$buf:\n");
X
Xseek(FOO,20000,0);
X$got = read(FOO,$buf,4);
X
Xprint ($got == 0 ? "ok 3\n" : "not ok 3\n");
Xprint ($buf eq "" ? "ok 4\n" : "not ok 4\n");
!STUFFY!FUNK!
echo " "
echo "End of kit 21 (of 36)"
cat /dev/null >kit21isdone
run=''
config=''
for iskit in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36; do
if test -f kit${iskit}isdone; then
run="$run $iskit"
else
todo="$todo $iskit"
fi
done
case $todo in
'')
echo "You have run all your kits. Please read README and then type Configure."
for combo in *:AA; do
if test -f "$combo"; then
realfile=`basename $combo :AA`
cat $realfile:[A-Z][A-Z] >$realfile
rm -rf $realfile:[A-Z][A-Z]
fi
done
rm -rf kit*isdone
chmod 755 Configure
;;
*) echo "You have run$run."
echo "You still need to run$todo."
;;
esac
: Someone might mail this, so...
exit
exit 0 # Just in case...
--
Kent Landfield INTERNET: kent@sparky.IMD.Sterling.COM
Sterling Software, IMD UUCP: uunet!sparky!kent
Phone: (402) 291-8300 FAX: (402) 291-4362
Please send comp.sources.misc-related mail to kent@uunet.uu.net.