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emacs/lisp/pcmpl-gnu.el
Stefan Monnier 39c9faef2f * lisp/pcmpl-gnu.el: Don't fail when there is no Makefile nor -f arg. 
(pcmpl-gnu-makefile-regexps): Accept "makefile" as well as files that
end in ".mk".
(pcmpl-gnu-make-rule-names): Check "makefile" and ignore errors
when reading the makefile.

Fixes: debbugs:10116
2011-12-08 08:20:20 -05:00

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;;; pcmpl-gnu.el --- completions for GNU project tools -*- lexical-binding: t -*-
;; Copyright (C) 1999-2011 Free Software Foundation, Inc.
;; Package: pcomplete
;; This file is part of GNU Emacs.
;; GNU Emacs 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 3 of the License, or
;; (at your option) any later version.
;; GNU Emacs 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. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;;; Code:
(provide 'pcmpl-gnu)
(require 'pcomplete)
(require 'pcmpl-unix)
(defgroup pcmpl-gnu nil
"Completions for GNU project tools."
:group 'pcomplete)
;; User Variables:
(defcustom pcmpl-gnu-makefile-regexps
'("\\`GNUmakefile" "\\`[Mm]akefile" "\\.ma?k\\'")
"A list of regexps that will match Makefile names."
:type '(repeat regexp)
:group 'pcmpl-gnu)
;; Functions:
;;;###autoload
(defun pcomplete/gzip ()
"Completion for `gzip'."
(let ((pcomplete-help "(gzip)"))
(pcomplete-opt "cdfhlLnNqrStvV123456789")
(while (pcomplete-here
(pcmpl-gnu-zipped-files
(catch 'has-d-flag
(let ((args pcomplete-args))
(while args
(if (string-match "\\`-.*[dt]" (car args))
(throw 'has-d-flag t))
(setq args (cdr args))))))))))
(defun pcmpl-gnu-zipped-files (unzip-p)
"Find all zipped or unzipped files: the inverse of UNZIP-P."
(pcomplete-entries
nil
(function
(lambda (entry)
(when (and (file-readable-p entry)
(file-regular-p entry))
(let ((zipped (string-match "\\.\\(t?gz\\|\\(ta\\)?Z\\)\\'"
entry)))
(or (and unzip-p zipped)
(and (not unzip-p) (not zipped)))))))))
;;;###autoload
(defun pcomplete/bzip2 ()
"Completion for `bzip2'."
(pcomplete-opt "hdzkftcqvLVs123456789")
(while (pcomplete-here
(pcmpl-gnu-bzipped-files
(catch 'has-d-flag
(let ((args pcomplete-args))
(while args
(if (string-match "\\`-.*[dt]" (car args))
(throw 'has-d-flag t))
(setq args (cdr args)))))))))
(defun pcmpl-gnu-bzipped-files (unzip-p)
"Find all zipped or unzipped files: the inverse of UNZIP-P."
(pcomplete-entries
nil
(function
(lambda (entry)
(when (and (file-readable-p entry)
(file-regular-p entry))
(let ((zipped (string-match "\\.\\(t?z2\\|bz2\\)\\'" entry)))
(or (and unzip-p zipped)
(and (not unzip-p) (not zipped)))))))))
;;;###autoload
(defun pcomplete/make ()
"Completion for GNU `make'."
(let ((pcomplete-help "(make)Top"))
(pcomplete-opt "bmC/def(pcmpl-gnu-makefile-names)hiI/j?kl?no.pqrsStvwW.")
(while (pcomplete-here (completion-table-in-turn
(pcmpl-gnu-make-rule-names)
(pcomplete-entries))
nil 'identity))))
(defun pcmpl-gnu-makefile-names ()
"Return a list of possible makefile names."
(pcomplete-entries (mapconcat 'identity pcmpl-gnu-makefile-regexps "\\|")))
(defun pcmpl-gnu-make-rule-names ()
"Return a list of possible make rule names in MAKEFILE."
(let* ((minus-f (member "-f" pcomplete-args))
(makefile (or (cadr minus-f)
(cond
((file-exists-p "GNUmakefile") "GNUmakefile")
((file-exists-p "makefile") "makefile")
(t "Makefile"))))
rules)
(if (not (file-readable-p makefile))
(unless minus-f (list "-f"))
(with-temp-buffer
(ignore-errors ;Could be a directory or something.
(insert-file-contents makefile))
(while (re-search-forward
(concat "^\\s-*\\([^\n#%.$][^:=\n]*\\)\\s-*:[^=]") nil t)
(setq rules (append (split-string (match-string 1)) rules))))
(pcomplete-uniqify-list rules))))
(defcustom pcmpl-gnu-tarfile-regexp
"\\.t\\(ar\\(\\.\\(gz\\|bz2\\|Z\\)\\)?\\|gz\\|a[zZ]\\|z2\\)\\'"
"A regexp which matches any tar archive."
:type 'regexp
:group 'pcmpl-gnu)
;; Only used in tar-mode buffers.
(defvar tar-parse-info)
(declare-function tar-header-name "tar-mode" t t)
(defmacro pcmpl-gnu-with-file-buffer (file &rest body)
"Run BODY inside a buffer visiting FILE."
(declare (debug t) (indent 1))
(let ((exist (make-symbol "exist"))
(filesym (make-symbol "file"))
(buf (make-symbol "buf")))
`(let* ((,filesym ,file)
(,exist (find-buffer-visiting ,filesym))
(,buf (or ,exist (find-file-noselect ,filesym))))
(unwind-protect
(with-current-buffer ,buf
,@body)
(when (and (not ,exist) (buffer-live-p ,buf))
(kill-buffer ,buf))))))
;;;###autoload
(defun pcomplete/tar ()
"Completion for the GNU tar utility."
;; options that end in an equal sign will want further completion...
(let (saw-option complete-within)
(let ((pcomplete-suffix-list (cons ?= pcomplete-suffix-list)))
(while (pcomplete-match "^-" 0)
(setq saw-option t)
(if (pcomplete-match "^--" 0)
(if (pcomplete-match "^--\\([^= \t\n\f]*\\)\\'" 0)
;; FIXME: Extract this list from "tar --help".
(pcomplete-here*
'("--absolute-names"
"--after-date="
"--append"
"--atime-preserve"
"--backup"
"--block-number"
"--blocking-factor="
"--catenate"
"--checkpoint"
"--compare"
"--compress"
"--concatenate"
"--confirmation"
"--create"
"--delete"
"--dereference"
"--diff"
"--directory="
"--exclude="
"--exclude-from="
"--extract"
"--file="
"--files-from="
"--force-local"
"--get"
"--group="
"--gzip"
"--help"
"--ignore-failed-read"
"--ignore-zeros"
"--incremental"
"--info-script="
"--interactive"
"--keep-old-files"
"--label="
"--list"
"--listed-incremental"
"--mode="
"--modification-time"
"--multi-volume"
"--new-volume-script="
"--newer="
"--newer-mtime"
"--no-recursion"
"--null"
"--numeric-owner"
"--old-archive"
"--one-file-system"
"--owner="
"--portability"
"--posix"
"--preserve"
"--preserve-order"
"--preserve-permissions"
"--read-full-records"
"--record-size="
"--recursive-unlink"
"--remove-files"
"--rsh-command="
"--same-order"
"--same-owner"
"--same-permissions"
"--sparse"
"--starting-file="
"--suffix="
"--tape-length="
"--to-stdout"
"--totals"
"--uncompress"
"--ungzip"
"--unlink-first"
"--update"
"--use-compress-program="
"--verbose"
"--verify"
"--version"
"--volno-file=")))
(pcomplete-opt "01234567ABCFGKLMNOPRSTUVWXZbcdfghiklmoprstuvwxz"))
(cond
((pcomplete-match "\\`--after-date=" 0)
(pcomplete-here*))
((pcomplete-match "\\`--backup=" 0)
(pcomplete-here*))
((pcomplete-match "\\`--blocking-factor=" 0)
(pcomplete-here*))
((pcomplete-match "\\`--directory=\\(.*\\)" 0)
(pcomplete-here* (pcomplete-dirs)
(pcomplete-match-string 1 0)))
((pcomplete-match "\\`--exclude-from=\\(.*\\)" 0)
(pcomplete-here* (pcomplete-entries)
(pcomplete-match-string 1 0)))
((pcomplete-match "\\`--exclude=" 0)
(pcomplete-here*))
((pcomplete-match "\\`--\\(extract\\|list\\)\\'" 0)
(setq complete-within t))
((pcomplete-match "\\`--file=\\(.*\\)" 0)
(pcomplete-here* (pcomplete-dirs-or-entries pcmpl-gnu-tarfile-regexp)
(pcomplete-match-string 1 0)))
((pcomplete-match "\\`--files-from=\\(.*\\)" 0)
(pcomplete-here* (pcomplete-entries)
(pcomplete-match-string 1 0)))
((pcomplete-match "\\`--group=\\(.*\\)" 0)
(pcomplete-here* (pcmpl-unix-group-names)
(pcomplete-match-string 1 0)))
((pcomplete-match "\\`--info-script=\\(.*\\)" 0)
(pcomplete-here* (pcomplete-entries)
(pcomplete-match-string 1 0)))
((pcomplete-match "\\`--label=" 0)
(pcomplete-here*))
((pcomplete-match "\\`--mode=" 0)
(pcomplete-here*))
((pcomplete-match "\\`--new-volume-script=\\(.*\\)" 0)
(pcomplete-here* (pcomplete-entries)
(pcomplete-match-string 1 0)))
((pcomplete-match "\\`--newer=" 0)
(pcomplete-here*))
((pcomplete-match "\\`--owner=\\(.*\\)" 0)
(pcomplete-here* (pcmpl-unix-user-names)
(pcomplete-match-string 1 0)))
((pcomplete-match "\\`--record-size=" 0)
(pcomplete-here*))
((pcomplete-match "\\`--rsh-command=\\(.*\\)" 0)
(pcomplete-here* (funcall pcomplete-command-completion-function)
(pcomplete-match-string 1 0)))
((pcomplete-match "\\`--starting-file=\\(.*\\)" 0)
(pcomplete-here* (pcomplete-entries)
(pcomplete-match-string 1 0)))
((pcomplete-match "\\`--suffix=" 0)
(pcomplete-here*))
((pcomplete-match "\\`--tape-length=" 0)
(pcomplete-here*))
((pcomplete-match "\\`--use-compress-program=\\(.*\\)" 0)
(pcomplete-here* (funcall pcomplete-command-completion-function)
(pcomplete-match-string 1 0)))
((pcomplete-match "\\`--volno-file=\\(.*\\)" 0)
(pcomplete-here* (pcomplete-entries)
(pcomplete-match-string 1 0))))))
(unless saw-option
(pcomplete-here
(mapcar 'char-to-string
(string-to-list
"01234567ABCFGIKLMNOPRSTUVWXZbcdfghiklmoprstuvwxz")))
(if (pcomplete-match "[xt]" 'first 1)
(setq complete-within t)))
(pcomplete-here (pcomplete-dirs-or-entries pcmpl-gnu-tarfile-regexp))
(while (pcomplete-here
(if (and complete-within
(let* ((fa (file-attributes (pcomplete-arg 1)))
(size (nth 7 fa)))
(and (numberp size)
(or (null large-file-warning-threshold)
(< size large-file-warning-threshold)))))
(let ((file (pcomplete-arg 1)))
(completion-table-dynamic
(lambda (_string)
(pcmpl-gnu-with-file-buffer file
(mapcar #'tar-header-name tar-parse-info)))))
(pcomplete-entries))
nil 'identity))))
;;;###autoload
(defalias 'pcomplete/gdb 'pcomplete/xargs)
;;; pcmpl-gnu.el ends here
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