mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-11-26 07:33:47 +00:00
255 lines
7.8 KiB
EmacsLisp
255 lines
7.8 KiB
EmacsLisp
;;; find-cmd.el --- Build a valid find(1) command with sexps
|
|
|
|
;; Copyright (C) 2008-2018 Free Software Foundation, Inc.
|
|
|
|
;; Author: Philip Jackson <phil@shellarchive.co.uk>
|
|
;; Version: 0.6
|
|
|
|
;; 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 <https://www.gnu.org/licenses/>.
|
|
|
|
;;; Commentary:
|
|
|
|
;; With this module you can build up a (hopefully) valid find(1)
|
|
;; string ready for the command line. For example:
|
|
|
|
;; (find-cmd '(prune (name ".svn" ".git" ".CVS"))
|
|
;; '(and (or (name "*.pl" "*.pm" "*.t")
|
|
;; (mtime "+1"))
|
|
;; (fstype "nfs" "ufs"))))
|
|
|
|
;; will become (un-wrapped):
|
|
|
|
;; "find '/home/phil/' \\( \\( -name '.svn' -or -name '.git' -or
|
|
;; -name '.CVS' \\) -prune -or -true \\) \\( \\( \\( -name '*.pl'
|
|
;; -or -name '*.pm' -or -name '*.t' \\) -or -mtime '+1' \\) -and \\(
|
|
;; -fstype 'nfs' -or -fstype 'ufs' \\) \\)"
|
|
|
|
;;; Code:
|
|
|
|
(require 'grep)
|
|
|
|
(defconst find-constituents
|
|
'((and . find-and)
|
|
(not . find-not)
|
|
(or . find-or)
|
|
|
|
(a . find-and)
|
|
(n . find-not)
|
|
(o . find-or)
|
|
|
|
(prune . find-prune)
|
|
|
|
;; switches
|
|
(L . (0))
|
|
(P . (0))
|
|
(H . (0))
|
|
|
|
;; generic tests
|
|
(amin . (1))
|
|
(anewer . (1))
|
|
(atime . (1))
|
|
(cmin . (1))
|
|
(cnewer . (1))
|
|
(ctime . (1))
|
|
(empty . (0))
|
|
(executable . (0))
|
|
(false . (0))
|
|
(fstype . (1))
|
|
(gid . (1))
|
|
(group . (1))
|
|
(ilname . (1))
|
|
(iname . (1))
|
|
(inum . (1))
|
|
(ipath . (1))
|
|
(iregex . (1))
|
|
(iwholename . (1))
|
|
(links . (1))
|
|
(lname . (1))
|
|
(mmin . (1))
|
|
(mtime . (1))
|
|
(name . (1))
|
|
(newer . (1))
|
|
(nogroup . (0))
|
|
(nouser . (0))
|
|
(path . (1))
|
|
(perm . (0))
|
|
(readable . (0))
|
|
(regex . (1))
|
|
(samefile . (1))
|
|
(size . (1))
|
|
(true . (0))
|
|
(type . (1))
|
|
(uid . (1))
|
|
(used . (1))
|
|
(user . (1))
|
|
(wholename . (1))
|
|
(writable . (0))
|
|
(xtype . (nil))
|
|
|
|
;; normal options (always true)
|
|
(daystart . (0))
|
|
(depth . (0))
|
|
(maxdepth . (1))
|
|
(mindepth . (1))
|
|
(mount . (0))
|
|
(noleaf . (0))
|
|
(ignore_readdir_race . (0))
|
|
(noignore_readdir_race . (0))
|
|
(regextype . (1))
|
|
(xdev . (0))
|
|
|
|
;; actions
|
|
(delete . (0))
|
|
(print0 . (0))
|
|
(printf . (1))
|
|
(fprintf . (2))
|
|
(print . (0))
|
|
(fprint0 . (1))
|
|
(fprint . (1))
|
|
(ls . (0))
|
|
(fls . (1))
|
|
(prune . (0))
|
|
(quit . (0))
|
|
|
|
;; these need to be terminated with a ;
|
|
(exec . (1 find-command t))
|
|
(ok . (1 find-command t))
|
|
(execdir . (1 find-command t))
|
|
(okdir . (1 find-command t)))
|
|
"Holds details of each of the find options.
|
|
The car of each alist is the name. The cdr is minimum args, the
|
|
function used to join many occurrences of the argument together,
|
|
and whether or not to leave quotes off the string (non-nil means
|
|
the string will be quoted).")
|
|
|
|
;;;###autoload
|
|
(defun find-cmd (&rest subfinds)
|
|
"Initiate the building of a find command.
|
|
For example:
|
|
|
|
\(find-cmd \\='(prune (name \".svn\" \".git\" \".CVS\"))
|
|
\\='(and (or (name \"*.pl\" \"*.pm\" \"*.t\")
|
|
(mtime \"+1\"))
|
|
(fstype \"nfs\" \"ufs\"))))
|
|
|
|
`default-directory' is used as the initial search path. The
|
|
result is a string that should be ready for the command line."
|
|
;; FIXME: Provide a version that returns a list of strings (ready to pass to
|
|
;; call-process).
|
|
(concat find-program " "
|
|
(shell-quote-argument (expand-file-name default-directory)) " "
|
|
(cond
|
|
((cdr subfinds)
|
|
(mapconcat #'find-to-string subfinds ""))
|
|
(t
|
|
(find-to-string (car subfinds))))))
|
|
|
|
(defun find-and (form)
|
|
"And FORMs together, so:
|
|
(and (mtime \"+1\") (name \"something\"))
|
|
will produce:
|
|
find . \\( -mtime +1 -and -name something \\)"
|
|
(if (< (length form) 2)
|
|
(find-to-string (car form))
|
|
(concat "\\( "
|
|
(mapconcat #'find-to-string form "-and ")
|
|
"\\) ")))
|
|
|
|
(defun find-or (form)
|
|
"Or FORMs together, so:
|
|
(or (mtime \"+1\") (name \"something\"))
|
|
will produce:
|
|
find . \\( -mtime +1 -or -name something \\)"
|
|
(if (< (length form) 2)
|
|
(find-to-string (car form))
|
|
(concat "\\( "
|
|
(mapconcat #'find-to-string form "-or ")
|
|
"\\) ")))
|
|
|
|
(defun find-not (form)
|
|
"Or FORMs together and prefix with a -not, so:
|
|
(not (mtime \"+1\") (name \"something\"))
|
|
will produce:
|
|
-not \\( -mtime +1 -or -name something \\)
|
|
If you wanted the FORMs -and(ed) together instead then this would
|
|
suffice:
|
|
(not (and (mtime \"+1\") (name \"something\")))"
|
|
(concat "-not " (find-or (mapcar #'find-to-string form))))
|
|
|
|
(defun find-prune (form)
|
|
"-or together FORMs postfix `-prune' and then -or that with a
|
|
-true, so:
|
|
((prune (name \".svn\" \".git\")) (name \"*.pm\"))
|
|
will produce (unwrapped):
|
|
\\( \\( \\( -name .svn -or -name .git \\) /
|
|
-prune -or -true \\) -and -name *.pm \\)"
|
|
(find-or
|
|
(list
|
|
(concat (find-or (mapcar #'find-to-string form)) (find-generic "prune"))
|
|
(find-generic "true"))))
|
|
|
|
(defun find-generic (option &optional oper argcount args dont-quote)
|
|
"Allow an arbitrary string to be used as a form.
|
|
OPTION is the name of the form, OPER is the function used to either
|
|
OR or AND multiple results together. ARGCOUNT is the minimum of
|
|
args that OPTION can receive and ARGS are the arguments for OPTION.
|
|
If DONT-QUOTE is non-nil, arguments are quoted for passing them to
|
|
the shell."
|
|
(when (and (numberp argcount) (< (length args) argcount))
|
|
(error "`%s' needs at least %d arguments" option argcount))
|
|
(let ((oper (or oper 'find-or)))
|
|
(if (and args (length args))
|
|
(funcall oper (mapcar (lambda (x)
|
|
(concat "-" option
|
|
(if dont-quote
|
|
(concat " " x " ")
|
|
(concat " "
|
|
(shell-quote-argument x)
|
|
" "))))
|
|
args))
|
|
(concat "-" option " "))))
|
|
|
|
(defun find-command (form)
|
|
"For each item in FORM add a terminating semi-colon and turn
|
|
them into valid switches. The result is -and(ed) together."
|
|
(find-and (mapcar (lambda (x)
|
|
(concat (find-to-string x) "\\; "))
|
|
form)))
|
|
|
|
(defun find-to-string (form)
|
|
"Parse FORM to produce a set of valid find arguments."
|
|
(cond
|
|
((stringp form)
|
|
form)
|
|
((consp form)
|
|
(let ((option (cdr (assoc (car form) find-constituents))))
|
|
(cond
|
|
((and (symbolp option) (fboundp option))
|
|
(funcall option (cdr form)))
|
|
((consp option)
|
|
(let ((option (symbol-name (car form)))
|
|
(argcnt (car option))
|
|
(oper (cadr option))
|
|
(dont-quote (car (cddr option))))
|
|
(find-to-string
|
|
(find-generic option oper argcnt (cdr form) dont-quote))))
|
|
(t
|
|
(error "Sorry I don't know how to handle `%s'" (car form))))))))
|
|
|
|
(provide 'find-cmd)
|
|
|
|
;;; find-cmd.el ends here
|