commit/edit-utils: matsl: Added find-lisp.el from GNU.

1 new commit in edit-utils: https://bitbucket.org/xemacs/edit-utils/commits/c0655c55d04e/ Changeset: c0655c55d04e User: matsl Date: 2013-06-15 22:49:12 Summary: Added find-lisp.el from GNU. 2013-06-15 Mats Lidell <matsl(a)xemacs.org&gt; * find-lisp.el: New file. Find in lisp from GNU. * Makefile (ELCS): Ditto. Affected #: 3 files diff -r 33bcc14b0f8f3a756426b8e090efe931ad6a2283 -r c0655c55d04ecd402b1e5fc2e8d0895faa755423 ChangeLog --- a/ChangeLog +++ b/ChangeLog ＠＠ -1,3 +1,8 ＠＠ +2013-06-15 Mats Lidell <matsl(a)xemacs.org&gt; + + * find-lisp.el: New file. Find in lisp from GNU. + * Makefile (ELCS): Ditto. + 2013-03-19 Norbert Koch <viteno(a)xemacs.org&gt; * Makefile (VERSION): XEmacs package 2.50 released. diff -r 33bcc14b0f8f3a756426b8e090efe931ad6a2283 -r c0655c55d04ecd402b1e5fc2e8d0895faa755423 Makefile --- a/Makefile +++ b/Makefile ＠＠ -43,7 +43,7 ＠＠ winring.elc vertical-mode.elc power-macros.elc icon-themes.elc \ search-buffers.elc setnu.elc align.elc autorevert.elc allout.elc \ narrow-stack.elc highline.elc crm.elc wide-edit.elc buffer-colors.elc \ - list-register.elc which-func.elc + list-register.elc which-func.elc find-lisp.elc EXPLICIT_DOCS = $(PACKAGE).texi tempo.texi diff -r 33bcc14b0f8f3a756426b8e090efe931ad6a2283 -r c0655c55d04ecd402b1e5fc2e8d0895faa755423 find-lisp.el --- /dev/null +++ b/find-lisp.el ＠＠ -0,0 +1,365 ＠＠ +;;; find-lisp.el --- emulation of find in Emacs Lisp + +;; Author: Peter Breton +;; Created: Fri Mar 26 1999 +;; Keywords: unix + +;; Copyright (C) 1999-2013 Free Software Foundation, Inc. + +;; 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/>;. + +;;; Synched up with: Emacs 24.2 + +;;; Commentary: +;; +;; This is a very generalized form of find; it basically implements a +;; recursive directory descent. The conditions which bound the search +;; are expressed as predicates, and I have not addressed the question +;; of how to wrap up the common chores that find does in a simpler +;; format than writing code for all the various predicates. +;; +;; Some random thoughts are to express simple queries directly with +;; user-level functions, and perhaps use some kind of forms interface +;; for medium-level queries. Really complicated queries can be +;; expressed in Lisp. +;; + +;;; Todo +;; +;; It would be nice if we could sort the results without running the find +;; again. Maybe that could work by storing the original file attributes? + +;;; Code: + +(require 'dired) + +(defvar dired-buffers) +(defvar dired-subdir-alist) + +;; Internal variables + +(defvar find-lisp-regexp nil + "Internal variable.") + +(defconst find-lisp-line-indent " " + "Indentation for dired file lines.") + +(defvar find-lisp-file-predicate nil + "Predicate for choosing to include files.") + +(defvar find-lisp-directory-predicate nil + "Predicate for choosing to descend into directories.") + +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +;; Debugging Code +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + +(defvar find-lisp-debug-buffer "*Find Lisp Debug*" + "Buffer for debugging information.") + +(defvar find-lisp-debug nil + "Whether debugging is enabled.") + +(defun find-lisp-debug-message (message) + "Print a debug message MESSAGE in `find-lisp-debug-buffer'." + (set-buffer (get-buffer-create find-lisp-debug-buffer)) + (goto-char (point-max)) + (insert message "\n")) + +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +;; Directory and File predicates +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + +(defun find-lisp-default-directory-predicate (dir parent) + "True if DIR is not a dot file, and not a symlink. +PARENT is the parent directory of DIR." + (and find-lisp-debug + (find-lisp-debug-message + (format "Processing directory %s in %s" dir parent))) + ;; Skip current and parent directories + (not (or (string= dir ".") + (string= dir "..") + ;; Skip directories which are symlinks + ;; Easy way to circumvent recursive loops + (file-symlink-p (expand-file-name dir parent))))) + +(defun find-lisp-default-file-predicate (file dir) + "True if FILE matches `find-lisp-regexp'. +DIR is the directory containing FILE." + (and find-lisp-debug + (find-lisp-debug-message + (format "Processing file %s in %s" file dir))) + (and (not (file-directory-p (expand-file-name file dir))) + (string-match find-lisp-regexp file))) + +(defun find-lisp-file-predicate-is-directory (file dir) + "True if FILE is a directory. +Argument DIR is the directory containing FILE." + (and find-lisp-debug + (find-lisp-debug-message + (format "Processing file %s in %s" file dir))) + (and (file-directory-p (expand-file-name file dir)) + (not (or (string= file ".") + (string= file ".."))))) + +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +;; Find functions +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + +(defun find-lisp-find-files (directory regexp) + "Find files in DIRECTORY which match REGEXP." + (let ((file-predicate 'find-lisp-default-file-predicate) + (directory-predicate 'find-lisp-default-directory-predicate) + (find-lisp-regexp regexp)) + (find-lisp-find-files-internal + directory + file-predicate + directory-predicate))) + +;; Workhorse function +(defun find-lisp-find-files-internal (directory file-predicate + directory-predicate) + "Find files under DIRECTORY which satisfy FILE-PREDICATE. +FILE-PREDICATE is a function which takes two arguments: the file and its +directory. + +DIRECTORY-PREDICATE is used to decide whether to descend into directories. +It is a function which takes two arguments, the directory and its parent." + (setq directory (file-name-as-directory directory)) + (let (results sub-results) + (dolist (file (directory-files directory nil nil t)) + (let ((fullname (expand-file-name file directory))) + (when (file-readable-p (expand-file-name file directory)) + ;; If a directory, check it we should descend into it + (and (file-directory-p fullname) + (funcall directory-predicate file directory) + (progn + (setq sub-results + (find-lisp-find-files-internal + fullname + file-predicate + directory-predicate)) + (if results + (nconc results sub-results) + (setq results sub-results)))) + ;; For all files and directories, call the file predicate + (and (funcall file-predicate file directory) + (if results + (nconc results (list fullname)) + (setq results (list fullname))))))) + results)) + +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +;; Find-dired all in Lisp +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + +;;;###autoload +(defun find-lisp-find-dired (dir regexp) + "Find files in DIR, matching REGEXP." + (interactive "DFind files in directory: \nsMatching regexp: ") + (let ((find-lisp-regexp regexp)) + (find-lisp-find-dired-internal + dir + 'find-lisp-default-file-predicate + 'find-lisp-default-directory-predicate + "*Find Lisp Dired*"))) + +;; Just the subdirectories +;;;###autoload +(defun find-lisp-find-dired-subdirectories (dir) + "Find all subdirectories of DIR." + (interactive "DFind subdirectories of directory: ") + (find-lisp-find-dired-internal + dir + 'find-lisp-file-predicate-is-directory + 'find-lisp-default-directory-predicate + "*Find Lisp Dired Subdirectories*")) + +;; Most of this is lifted from find-dired.el +;; +(defun find-lisp-find-dired-internal (dir file-predicate + directory-predicate buffer-name) + "Run find (Lisp version) and go into Dired mode on a buffer of the output." + (let ((dired-buffers dired-buffers) + (regexp find-lisp-regexp)) + ;; Expand DIR ("" means default-directory), and make sure it has a + ;; trailing slash. + (setq dir (file-name-as-directory (expand-file-name dir))) + ;; Check that it's really a directory. + (or (file-directory-p dir) + (error "find-dired needs a directory: %s" dir)) + (or + (and (buffer-name) + (string= buffer-name (buffer-name))) + (switch-to-buffer (get-buffer-create buffer-name))) + (widen) + (kill-all-local-variables) + (setq buffer-read-only nil) + (erase-buffer) + (setq default-directory dir) + (dired-mode dir) + + (use-local-map (let ((map (make-sparse-keymap))) + (set-keymap-parent map (current-local-map)) + map)) + + (make-local-variable 'find-lisp-file-predicate) + (setq find-lisp-file-predicate file-predicate) + (make-local-variable 'find-lisp-directory-predicate) + (setq find-lisp-directory-predicate directory-predicate) + (make-local-variable 'find-lisp-regexp) + (setq find-lisp-regexp regexp) + + (make-local-variable 'revert-buffer-function) + (setq revert-buffer-function + (function + (lambda (_ignore1 _ignore2) + (find-lisp-insert-directory + default-directory + find-lisp-file-predicate + find-lisp-directory-predicate + 'ignore) + ) + )) + + ;; Set subdir-alist so that Tree Dired will work: + (if (fboundp 'dired-simple-subdir-alist) + ;; will work even with nested dired format (dired-nstd.el,v 1.15 + ;; and later) + (dired-simple-subdir-alist) + ;; else we have an ancient tree dired (or classic dired, where + ;; this does no harm) + (set (make-local-variable 'dired-subdir-alist) + (list (cons default-directory (point-min-marker))))) + (find-lisp-insert-directory + dir file-predicate directory-predicate 'ignore) + (goto-char (point-min)) + + ;; XEmacs + (dired-insert-set-properties (point-min) (point-max)) + + (dired-goto-next-file))) + +(defun find-lisp-insert-directory (dir + file-predicate + directory-predicate + _sort-function) + "Insert the results of `find-lisp-find-files' in the current buffer." + (let ((buffer-read-only nil) + (files (find-lisp-find-files-internal + dir + file-predicate + directory-predicate)) + (len (length dir))) + (erase-buffer) + ;; Subdir headlerline must come first because the first marker in + ;; subdir-alist points there. + (insert find-lisp-line-indent dir ":\n") + ;; Make second line a ``find'' line in analogy to the ``total'' or + ;; ``wildcard'' line. + ;; + ;; No analog for find-lisp? + (insert find-lisp-line-indent "\n") + ;; Run the find function + (mapc + (function + (lambda (file) + (find-lisp-find-dired-insert-file + (substring file len) + (current-buffer)))) + (sort files 'string-lessp)) + ;; FIXME: Sort function is ignored for now + ;; (funcall sort-function files)) + (goto-char (point-min)) + (dired-goto-next-file))) + +;;;###autoload +(defun find-lisp-find-dired-filter (regexp) + "Change the filter on a find-lisp-find-dired buffer to REGEXP." + (interactive "sSet filter to regexp: ") + (setq find-lisp-regexp regexp) + (revert-buffer)) + +(defun find-lisp-find-dired-insert-file (file buffer) + (set-buffer buffer) + (insert find-lisp-line-indent + (find-lisp-format file (file-attributes file 'string) (list "") + (current-time)))) + +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +;; Lifted from ls-lisp. We don't want to require it, because that +;; would alter the insert-directory function. +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + +(defun find-lisp-format (file-name file-attr switches now) + (let ((file-type (nth 0 file-attr))) + (concat (if (memq ?i switches) ; inode number + (format "%6d " (nth 10 file-attr))) + ;; nil is treated like "" in concat + (if (memq ?s switches) ; size in K + (format "%4d " (1+ (/ (nth 7 file-attr) 1024)))) + (nth 8 file-attr) ; permission bits + (format " %3d %-8s %-8s %8d " + (nth 1 file-attr) ; no. of links + (if (numberp (nth 2 file-attr)) + (int-to-string (nth 2 file-attr)) + (nth 2 file-attr)) ; uid + (if (eq system-type 'ms-dos) + "root" ; everything is root on MSDOS. + (if (numberp (nth 3 file-attr)) + (int-to-string (nth 3 file-attr)) + (nth 3 file-attr))) ; gid + (nth 7 file-attr) ; size in bytes + ) + (find-lisp-format-time file-attr switches now) + " " + file-name + (if (stringp file-type) ; is a symbolic link + (concat " -> " file-type) + "") + "\n"))) + +(defun find-lisp-time-index (switches) + ;; Return index into file-attributes according to ls SWITCHES. + (cond + ((memq ?c switches) 6) ; last mode change + ((memq ?u switches) 4) ; last access + ;; default is last modtime + (t 5))) + +(defun find-lisp-format-time (file-attr switches now) + ;; Format time string for file with attributes FILE-ATTR according + ;; to SWITCHES (a list of ls option letters of which c and u are recognized). + ;; Use the same method as `ls' to decide whether to show time-of-day or year, + ;; depending on distance between file date and NOW. + (let* ((time (nth (find-lisp-time-index switches) file-attr)) + (diff16 (- (car time) (car now))) + (diff (+ (ash diff16 16) (- (car (cdr time)) (car (cdr now))))) + (past-cutoff (- (* 6 30 24 60 60))) ; 6 30-day months + (future-cutoff (* 60 60))) ; 1 hour + (format-time-string + (if (and + (<= past-cutoff diff) (<= diff future-cutoff) + ;; Sanity check in case `diff' computation overflowed. + (<= (1- (ash past-cutoff -16)) diff16) + (<= diff16 (1+ (ash future-cutoff -16)))) + "%b %e %H:%M" + "%b %e %Y") + time))) + +(provide 'find-lisp) + +;;; find-lisp.el ends here Repository URL: https://bitbucket.org/xemacs/edit-utils/ -- This is a commit notification from bitbucket.org. 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