From 1ce958257204bd3f3271e182c3c3aac64103978b Mon Sep 17 00:00:00 2001 From: morioka Date: Thu, 6 Nov 1997 15:47:23 +0000 Subject: [PATCH] Rename file-detect.el -> path-util.el (file name should be less than 13 bytes). --- APEL-ELS | 8 +-- path-util.el | 170 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 175 insertions(+), 3 deletions(-) create mode 100644 path-util.el diff --git a/APEL-ELS b/APEL-ELS index bb34bd6..769b945 100644 --- a/APEL-ELS +++ b/APEL-ELS @@ -1,10 +1,12 @@ ;;; -*-Emacs-Lisp-*- ;;; -;;; $Id: APEL-ELS,v 1.5 1997-05-09 01:23:44 morioka Exp $ +;;; $Id: APEL-ELS,v 1.6 1997-11-06 15:47:18 morioka Exp $ ;;; -(setq apel-modules '(alist atype file-detect filename install +(setq apel-modules '(alist atype + path-util filename install std11 std11-parse - mule-caesar)) + mule-caesar + file-detect)) ;;; APEL-ELS ends here diff --git a/path-util.el b/path-util.el new file mode 100644 index 0000000..5ff9826 --- /dev/null +++ b/path-util.el @@ -0,0 +1,170 @@ +;;; path-util.el --- Emacs Lisp file detection utility + +;; Copyright (C) 1996,1997 Free Software Foundation, Inc. + +;; Author: MORIOKA Tomohiko +;; Version: $Id: path-util.el,v 1.1 1997-11-06 15:47:23 morioka Exp $ +;; Keywords: file detection, install, module + +;; This file is part of APEL (A Portable Emacs Library). + +;; This program 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 2, or (at +;; your option) any later version. + +;; This program 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; see the file COPYING. If not, write to the +;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, +;; Boston, MA 02111-1307, USA. + +;;; Code: + +(defvar default-load-path load-path + "*Base of `load-path'. +It is used as default value of target path to search file or +subdirectory under load-path.") + +;;;###autoload +(defun add-path (path &rest options) + "Add PATH to `load-path' if it exists under `default-load-path' +directories and it does not exist in `load-path'. + +You can use following PATH styles: + load-path relative: \"PATH/\" + (it is searched from `defaul-load-path') + home directory relative: \"~/PATH/\" \"~USER/PATH/\" + absolute path: \"/HOO/BAR/BAZ/\" + +You can specify following OPTIONS: + 'all-paths search from `load-path' + instead of `default-load-path' + 'append add PATH to the last of `load-path'" + (let ((rest (if (memq 'all-paths options) + load-path + default-load-path)) + p) + (if (and (catch 'tag + (while rest + (setq p (expand-file-name path (car rest))) + (if (file-directory-p p) + (throw 'tag p) + ) + (setq rest (cdr rest)) + )) + (not (member p load-path)) + ) + (setq load-path + (if (memq 'append options) + (append load-path (list p)) + (cons p load-path) + )) + ))) + +;;;###autoload +(defun add-latest-path (pattern &optional all-paths) + "Add latest path matched by PATTERN to `load-path' +if it exists under `default-load-path' directories +and it does not exist in `load-path'. + +If optional argument ALL-PATHS is specified, it is searched from all +of load-path instead of default-load-path." + (let ((path (get-latest-path pattern all-paths))) + (if path + (add-to-list 'load-path path) + ))) + +;;;###autoload +(defun get-latest-path (pattern &optional all-paths) + "Return latest directory in default-load-path +which is matched to regexp PATTERN. +If optional argument ALL-PATHS is specified, +it is searched from all of load-path instead of default-load-path." + (catch 'tag + (let ((paths (if all-paths + load-path + default-load-path)) + dir) + (while (setq dir (car paths)) + (if (and (file-exists-p dir) + (file-directory-p dir) + ) + (let ((files (sort (directory-files dir t pattern t) + (function file-newer-than-file-p))) + file) + (while (setq file (car files)) + (if (file-directory-p file) + (throw 'tag file) + ) + (setq files (cdr files)) + ))) + (setq paths (cdr paths)) + )))) + +;;;###autoload +(defun file-installed-p (file &optional paths) + "Return absolute-path of FILE if FILE exists in PATHS. +If PATHS is omitted, `load-path' is used." + (if (null paths) + (setq paths load-path) + ) + (catch 'tag + (let (path) + (while paths + (setq path (expand-file-name file (car paths))) + (if (file-exists-p path) + (throw 'tag path) + ) + (setq paths (cdr paths)) + )))) + +;;;###autoload +(defvar exec-suffix-list '("") + "*List of suffixes for executable.") + +;;;###autoload +(defun exec-installed-p (file &optional paths suffixes) + "Return absolute-path of FILE if FILE exists in PATHS. +If PATHS is omitted, `exec-path' is used. +If suffixes is omitted, `exec-suffix-list' is used." + (or paths + (setq paths exec-path) + ) + (or suffixes + (setq suffixes exec-suffix-list) + ) + (catch 'tag + (while paths + (let ((stem (expand-file-name file (car paths))) + (sufs suffixes) + ) + (while sufs + (let ((file (concat stem (car sufs)))) + (if (file-exists-p file) + (throw 'tag file) + )) + (setq sufs (cdr sufs)) + )) + (setq paths (cdr paths)) + ))) + +;;;###autoload +(defun module-installed-p (module &optional paths) + "Return t if module is provided or exists in PATHS. +If PATHS is omitted, `load-path' is used." + (or (featurep module) + (exec-installed-p (symbol-name module) load-path '(".elc" ".el")) + )) + + +;;; @ end +;;; + +(provide 'path-util) + +;;; path-util.el ends here -- 1.7.10.4