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Reduce regexp usage, now CL-oriented non-regexp code available, core Lisp lisp/ChangeLog addition: 2015-04-01 Aidan Kehoe <kehoea@parhasard.net> When calling #'string-match with a REGEXP without regular expression special characters, call #'search, #'mismatch, #'find, etc. instead, making our code less likely to side-effect other functions' match data and a little faster. * apropos.el (apropos-command): * apropos.el (apropos): Call (position ?\n ...) rather than (string-match "\n" ...) here. * buff-menu.el: * buff-menu.el (buffers-menu-omit-invisible-buffers): Don't fire up the regexp engine just to check if a string starts with a space. * buff-menu.el (select-buffers-tab-buffers-by-mode): Don't fire up the regexp engine just to compare mode basenames. * buff-menu.el (format-buffers-tab-line): * buff-menu.el (build-buffers-tab-internal): Moved to being a label within the following. * buff-menu.el (buffers-tab-items): Use the label. * bytecomp.el (byte-compile-log-1): Don't fire up the regexp engine just to look for a newline. * cus-edit.el (get): Ditto. * cus-edit.el (custom-variable-value-create): Ditto, but for a colon. * descr-text.el (describe-text-sexp): Ditto. * descr-text.el (describe-char-unicode-data): Use #'split-string-by-char given that we're just looking for a semicolon. * descr-text.el (describe-char): Don't fire up the regexp engine just to look for a newline. * disass.el (disassemble-internal): Ditto. * files.el (file-name-sans-extension): Implement this using #'position. * files.el (file-name-extension): Correct this function's docstring, implement it in terms of #'position. * files.el (insert-directory): Don't fire up the regexp engine to split a string by space; don't reverse the list of switches, this is actually a longstand bug as far as I can see. * gnuserv.el (gnuserv-process-filter): Use #'position here, instead of consing inside #'split-string needlessly. * gtk-file-dialog.el (gtk-file-dialog-update-dropdown): Use #'split-string-by-char here, don't fire up #'split-string for directory-sep-char. * gtk-font-menu.el (hack-font-truename): Implement this more cheaply in terms of #'find, #'split-string-by-char, #'equal, rather than #'string-match, #'split-string, #'string-equal. * hyper-apropos.el (hyper-apropos-grok-functions): * hyper-apropos.el (hyper-apropos-grok-variables): Look for a newline using #'position rather than #'string-match in these functions. * info.el (Info-insert-dir): * info.el (Info-insert-file-contents): * info.el (Info-follow-reference): * info.el (Info-extract-menu-node-name): * info.el (Info-menu): Look for fixed strings using #'position or #'search as appropriate in this file. * ldap.el (ldap-decode-string): * ldap.el (ldap-encode-string): #'encode-coding-string, #'decode-coding-string are always available, don't check if they're fboundp. * ldap.el (ldap-decode-address): * ldap.el (ldap-encode-address): Use #'split-string-by-char in these functions. * lisp-mnt.el (lm-creation-date): * lisp-mnt.el (lm-last-modified-date): Don't fire up the regexp engine just to look for spaces in this file. * menubar-items.el (default-menubar): Use (not (mismatch ...)) rather than #'string-match here, for simple regexp. Use (search "beta" ...) rather than (string-match "beta" ...) * menubar-items.el (sort-buffers-menu-alphabetically): * menubar-items.el (sort-buffers-menu-by-mode-then-alphabetically): * menubar-items.el (group-buffers-menu-by-mode-then-alphabetically): Don't fire up the regexp engine to check if a string starts with a space or an asterisk. Use the more fine-grained results of #'compare-strings; compare case-insensitively for the buffer menu. * menubar-items.el (list-all-buffers): * menubar-items.el (tutorials-menu-filter): Use #'equal rather than #'string-equal, which, in this context, has the drawback of not having a bytecode, and no redeeming features. * minibuf.el: * minibuf.el (un-substitute-in-file-name): Use #'count, rather than counting the occurences of $ using the regexp engine. * minibuf.el (read-file-name-internal-1): Don't fire up the regexp engine to search for ?=. * mouse.el (mouse-eval-sexp): Check for newline with #'find. * msw-font-menu.el (mswindows-reset-device-font-menus): Split a string by newline with #'split-string-by-char. * mule/japanese.el: * mule/japanese.el ("Japanese"): Use #'search rather than #'string-match; canoncase before comparing; fix a bug I had introduced where I had been making case insensitive comparisons where the case mattered. * mule/korea-util.el (default-korean-keyboard): Look for ?3 using #'find, not #'string-march. * mule/korea-util.el (quail-hangul-switch-hanja): Search for a fixed string using #'search. * mule/mule-cmds.el (set-locale-for-language-environment): #'position, #'substitute rather than #'string-match, #'replace-in-string. * newcomment.el (comment-make-extra-lines): Use #'search rather than #'string-match for a simple string. * package-get.el (package-get-remote-filename): Use #'position when looking for ?@ * process.el (setenv): * process.el (read-envvar-name): Use #'position when looking for ?=. * replace.el (map-query-replace-regexp): Use #'split-string-by-char instead of using an inline implementation of it. * select.el (select-convert-from-cf-text): * select.el (select-convert-from-cf-unicodetext): Use #'position rather than #'string-match in these functions. * setup-paths.el (paths-emacs-data-root-p): Use #'search when looking for simple string. * sound.el (load-sound-file): Use #'split-string-by-char rather than an inline reimplementation of same. * startup.el (splash-screen-window-body): * startup.el (splash-screen-tty-body): Search for simple strings using #'search. * version.el (emacs-version): Ditto. * x-font-menu.el (hack-font-truename): Implement this more cheaply in terms of #'find, #'split-string-by-char, #'equal, rather than #'string-match, #'split-string, #'string-equal. * x-font-menu.el (x-reset-device-font-menus-core): Use #'split-string-by-char here. * x-init.el (x-initialize-keyboard): Search for a simple string using #'search.
author Aidan Kehoe <kehoea@parhasard.net>
date Wed, 01 Apr 2015 14:28:20 +0100
parents 308d34e9f07d
children
line wrap: on
line source

;;; gtk-file-dialog.el --- A nicer file selection dialog for XEmacs w/GTK primitives

;; Copyright (C) 2000 Free Software Foundation, Inc.

;; Maintainer: William M. Perry <wmperry@gnu.org>
;; Keywords: extensions, internal

;; This file is part of XEmacs.

;; XEmacs 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.

;; XEmacs 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 XEmacs.  If not, see <http://www.gnu.org/licenses/>.

;;; Synched up with: Not in FSF.

;;; Commentary:

;; The default GTK file selection dialog is not sufficient for our
;; needs.  Limitations include:
;;
;; - not derived from GtkDialog
;; - no support for filters based on file types
;; - no support for setting an initial directory
;; - no way to tell it 'file must exist'
;; - no easy way to tell it to look at directories only
;; - ugly as sin
;;
;; This attempts to rectify the situation.

(globally-declare-fboundp
 '(gtk-clist-clear
   gtk-clist-freeze gtk-clist-append
   gtk-clist-thaw gtk-combo-set-popdown-strings gtk-dialog-new
   gtk-dialog-vbox gtk-dialog-action-area gtk-window-set-title
   gtk-button-new-with-label gtk-container-add gtk-signal-connect
   gtk-entry-get-text gtk-widget-destroy gtk-combo-new
   gtk-combo-disable-activate gtk-box-pack-start gtk-combo-entry
   gtk-hbox-new gtk-clist-new-with-titles gtk-scrolled-window-new
   gtk-widget-set-usize gtk-clist-get-text gtk-entry-set-text
   gtk-button-clicked gtk-option-menu-new gtk-menu-new
   gtk-label-new gtk-menu-item-new-with-label gtk-menu-append
   gtk-widget-show gtk-option-menu-set-menu gtk-box-pack-end
   gtk-entry-new gtk-widget-set-sensitive gtk-widget-realize))

(defun gtk-file-dialog-fill-file-list (dialog dir)
  (if (not dir)
      (setq dir (get dialog 'x-file-dialog-current-dir nil)))

  (put dialog 'x-file-dialog-current-dir dir)

  (let ((list (get dialog 'x-file-dialog-files-list nil))
	;(remotep (file-remote-p dir))
	)
    (if (not list)
	nil
      (gtk-clist-clear list)
      (gtk-clist-freeze list)
      ;; NOTE: Current versions of efs / ange-ftp do not honor the
      ;; files-only flag to directory-files, but actually DOING these
      ;; checks is hideously expensive.  Leave it turned off for now.
      (mapc #'(lambda (f)
		(if (or t		; Lets just wait for EFS to
			;(not remotep)	; fix itself, shall we?
			;(not (file-directory-p (expand-file-name f dir)))
			)
		    (gtk-clist-append list (list f))))
	    (directory-files dir nil
			     (get dialog 'x-file-dialog-active-filter nil)
			     nil t))
      (gtk-clist-thaw list))))

(defun gtk-file-dialog-fill-directory-list (dialog dir)
  (let ((subdirs (directory-files dir nil nil nil 5))
	;(remotep (file-remote-p dir))
	;(selected-dir (get dialog 'x-file-dialog-current-dir "/"))
	(directory-list (get dialog 'x-file-dialog-directory-list)))

    (gtk-clist-freeze directory-list)
    (gtk-clist-clear directory-list)

    (while subdirs
      (if (equal "." (car subdirs))
	  nil
	;; NOTE: Current versions of efs / ange-ftp do not honor the
	;; files-only flag to directory-files, but actually DOING these
	;; checks is hideously expensive.  Leave it turned off for now.
	(if (or t			; Lets just wait for EFS to
		;(not remotep)		; fix itself, shall we?
		;(file-directory-p (expand-file-name (car subdirs) dir))
		)
	    (gtk-clist-append directory-list (list (car subdirs)))))
      (pop subdirs))
    (gtk-clist-thaw directory-list)))

(defun gtk-file-dialog-update-dropdown (dialog dir)
  (let ((combo-box (get dialog 'x-file-dialog-select-list))
	(components (nreverse
		     (delete "" (split-string-by-char dir directory-sep-char))))
	(entries nil))
    (while components
      (push (concat "/" (mapconcat 'identity (reverse components)
				   (char-to-string directory-sep-char)))
	    entries)
      (pop components))
    (push (expand-file-name "." "~/") entries)
    (gtk-combo-set-popdown-strings combo-box (nreverse entries))))

(defun gtk-file-dialog-select-directory (dialog dir)
  (gtk-file-dialog-fill-directory-list dialog dir)
  (gtk-file-dialog-fill-file-list dialog dir)
  (gtk-file-dialog-update-dropdown dialog dir))

(defun gtk-file-dialog-new (&rest keywords)
  "Create a XEmacs file selection dialog.
Optional keyword arguments allowed:

:title			The title of the dialog
:initial-directory	Initial directory to show
:filter-list		List of filter descriptions and filters
:file-must-exist	Whether the file must exist or not
:directory		Look for a directory instead
:callback		Function to call with one arg, the selection
"
  (let* ((dialog (gtk-dialog-new))
	 (vbox (gtk-dialog-vbox dialog))
	 (dir (plist-get keywords :initial-directory default-directory))
	 (button-area (gtk-dialog-action-area dialog))
	 ;(initializing-gtk-file-dialog t)
	 (select-box nil)
	 button hbox)

    (put dialog 'type 'dialog)

    (gtk-window-set-title dialog (plist-get keywords :title "Select a file..."))

    (setq button (gtk-button-new-with-label "OK"))
    (gtk-container-add button-area button)
    (gtk-signal-connect button 'clicked
			(lambda (button dialog)
			  (funcall
			   (get dialog 'x-file-dialog-callback 'ignore)
			   (gtk-entry-get-text
			    (get dialog 'x-file-dialog-entry nil)))
			  (gtk-widget-destroy dialog))
			dialog)
    (put dialog 'x-file-dialog-ok-button button)

    (setq button (gtk-button-new-with-label "Cancel"))
    (gtk-container-add button-area button)
    (gtk-signal-connect button 'clicked
			(lambda (button dialog)
			  (gtk-widget-destroy dialog)) dialog)

    (put dialog 'x-file-dialog-cancel-button button)
    (put dialog 'x-file-dialog-callback (plist-get keywords :callback 'ignore))
    (put dialog 'x-file-dialog-construct-args keywords)
    (put dialog 'x-file-dialog-current-dir dir)

    ;; Dropdown list of directories...
    (setq select-box (gtk-combo-new))
    (gtk-combo-disable-activate select-box)
    (gtk-box-pack-start vbox select-box nil nil 5)
    (put dialog 'x-file-dialog-select-list select-box)

    ;; Hitting return in the entry will change dirs...
    (gtk-signal-connect (gtk-combo-entry select-box) 'activate
			(lambda (entry dialog)
			  (gtk-file-dialog-select-directory dialog
							    (gtk-entry-get-text entry)))
			dialog)

    ;; Start laying out horizontally...
    (setq hbox (gtk-hbox-new nil 0))
    (gtk-box-pack-start vbox hbox t t 5)

    ;; Directory listing
    (let ((directories (gtk-clist-new-with-titles 1 '("Directories")))
	  (scrolled (gtk-scrolled-window-new nil nil)))
      (gtk-container-add scrolled directories)
      (gtk-widget-set-usize scrolled 200 300)
      (gtk-box-pack-start hbox scrolled t t 0)
      (put dialog 'x-file-dialog-directory-list directories)
      (put dialog 'x-file-dialog-directory-scrolled scrolled)

      (gtk-signal-connect directories 'select-row
			  (lambda (list row column event dialog)
			    (let ((dir (expand-file-name
					 (gtk-clist-get-text
					  (get dialog 'x-file-dialog-directory-list)
					  row column)
					 (get dialog 'x-file-dialog-current-dir))))
			      (if (and (misc-user-event-p event)
				       (event-function event))
				  (gtk-file-dialog-select-directory dialog dir)
				(gtk-entry-set-text
				 (get dialog 'x-file-dialog-entry)
				 dir))))
			  dialog)
      )

    (if (plist-get keywords :directory nil)
	;; Directory listings only do not need the file or filters buttons.
	nil
      ;; File listing
      (let ((list (gtk-clist-new-with-titles 1 '("Files")))
	    (scrolled (gtk-scrolled-window-new nil nil)))
	(gtk-container-add scrolled list)
	(gtk-widget-set-usize scrolled 200 300)
	(gtk-box-pack-start hbox scrolled t t 0)

	(gtk-signal-connect list 'select-row
			    (lambda (list row column event dialog)
			      (gtk-entry-set-text
			       (get dialog 'x-file-dialog-entry nil)
			       (expand-file-name
				(gtk-clist-get-text list row column)
				(get dialog 'x-file-dialog-current-dir nil)))
			      (if (and (misc-user-event-p event)
				       (event-function event))
				  ;; Got a double or triple click event...
				  (gtk-button-clicked
				   (get dialog 'x-file-dialog-ok-button nil))))
			    dialog)

	(put dialog 'x-file-dialog-files-list list))

      ;; Filters
      (if (not (plist-get keywords :filter-list nil))
	  ;; Don't need to bother packing this
	  nil
	(setq hbox (gtk-hbox-new nil 0))
	(gtk-box-pack-start vbox hbox nil nil 0)

	(let ((label nil)
	      (options (plist-get keywords :filter-list nil))
	      (omenu nil)
	      (menu nil)
	      (item nil))
	  (setq omenu (gtk-option-menu-new)
		menu (gtk-menu-new)
		label (gtk-label-new "Filter: "))

	  (put dialog 'x-file-dialog-active-filter (cdr (car options)))
	  (mapc (lambda (o)
		  (setq item (gtk-menu-item-new-with-label (car o)))
		  (gtk-signal-connect item 'activate
				      (lambda (obj data)
					(put (car data) 'x-file-dialog-active-filter (cdr data))
					(gtk-file-dialog-fill-file-list (car data) nil))
				      (cons dialog (cdr o)))
		  (gtk-menu-append menu item)
		  (gtk-widget-show item)) options)
	  (gtk-option-menu-set-menu omenu menu)
	  (gtk-box-pack-end hbox omenu nil nil 0)
	  (gtk-box-pack-end hbox label nil nil 0))))

      ;; Entry
    (let ((entry (gtk-entry-new)))
      (if (plist-get keywords :directory nil)
	  nil
	(gtk-box-pack-start vbox entry nil nil 0))
      (if (plist-get keywords :file-must-exist nil)
	  (progn
	    (gtk-widget-set-sensitive (get dialog 'x-file-dialog-ok-button nil) nil)
	    (gtk-signal-connect entry 'changed
				(lambda (entry dialog)
				  (gtk-widget-set-sensitive
				   (get dialog 'x-file-dialog-ok-button)
				   (file-exists-p (gtk-entry-get-text entry))))
				dialog)))
      (put dialog 'x-file-dialog-entry entry))

    (gtk-widget-realize dialog)


    ;; Populate the file list if necessary
    (gtk-file-dialog-select-directory dialog dir)
    dialog))

(provide 'gtk-file-dialog)