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163
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1 ;;; packages.el --- Low level support for XEmacs packages
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2
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3 ;; Copyright (C) 1997 Free Software Foundation, Inc.
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4
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5 ;; Author: Steven L Baur <steve@altair.xemacs.org>
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6 ;; Keywords: internal, lisp
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7
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8 ;; This file is part of XEmacs.
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9
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10 ;; XEmacs is free software; you can redistribute it and/or modify it
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11 ;; under the terms of the GNU General Public License as published by
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12 ;; the Free Software Foundation; either version 2, or (at your option)
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13 ;; any later version.
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14
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15 ;; XEmacs is distributed in the hope that it will be useful, but
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16 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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18 ;; General Public License for more details.
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19
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20 ;; You should have received a copy of the GNU General Public License
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21 ;; along with XEmacs; see the file COPYING. If not, write to the Free
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22 ;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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23 ;; 02111-1307, USA.
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24
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25 ;;; Synched up with: Not in FSF
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26
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27 ;;; Commentary:
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28
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29 ;; This file provides low level facilities for XEmacs startup. Special
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30 ;; requirements apply to some of these functions because they can be called
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31 ;; during build from temacs and much of the usual lisp environment may
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32 ;; be missing.
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33
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34 ;;; Code:
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35
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36 (defvar autoload-file-name "auto-autoloads.el"
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37 "Filename that autoloads are expected to be found in.")
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38
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39 (defvar packages-hardcoded-lisp
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40 '("cl-defs"
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41 "startup"
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42 )
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43 "Lisp packages that are always dumped with XEmacs")
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44
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45 (defvar packages-useful-lisp
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46 '("bytecomp"
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47 "byte-optimize"
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48 "advice")
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49 "Lisp packages that need early byte compilation.")
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50
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51 (defvar packages-unbytecompiled-lisp
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52 '("paths.el"
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53 "version.el")
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54 "Lisp packages that should not be byte compiled.")
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55
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56 ;; Copied from subr.el
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57 (if (null (fboundp 'lambda))
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58 (defmacro lambda (&rest cdr)
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59 (list 'function (cons 'lambda cdr))))
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60
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61 ;; Copied from help.el, could possibly move it to here permanently.
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62 ;; This is taken directly from Emacs 19.34.94.
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63
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64 (defun locate-library (library &optional nosuffix path interactive-call)
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65 "Show the precise file name of Emacs library LIBRARY.
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66 This command searches the directories in `load-path' like `M-x load-library'
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67 to find the file that `M-x load-library RET LIBRARY RET' would load.
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68 Optional second arg NOSUFFIX non-nil means don't add suffixes `.elc' or `.el'
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69 to the specified name LIBRARY.
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70
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71 If the optional third arg PATH is specified, that list of directories
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72 is used instead of `load-path'."
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73 (interactive (list (read-string "Locate library: ")
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74 nil nil
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75 t))
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76 (let (result)
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77 (catch 'answer
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78 (mapcar
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79 (lambda (dir)
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80 (mapcar
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81 (lambda (suf)
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82 (let ((try (expand-file-name (concat library suf) dir)))
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83 (and (file-readable-p try)
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84 (null (file-directory-p try))
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85 (progn
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86 (setq result try)
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87 (throw 'answer try)))))
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88 (if nosuffix
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89 '("")
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90 (let ((basic '(".elc" ".el" ""))
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91 (compressed '(".Z" ".gz" "")))
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92 ;; If autocompression mode is on,
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93 ;; consider all combinations of library suffixes
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94 ;; and compression suffixes.
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95 (if (rassq 'jka-compr-handler file-name-handler-alist)
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96 (apply 'nconc
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97 (mapcar (lambda (compelt)
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98 (mapcar (lambda (baselt)
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99 (concat baselt compelt))
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100 basic))
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101 compressed))
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102 basic)))))
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103 (or path load-path)))
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104 (and interactive-call
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105 (if result
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106 (message "Library is file %s" result)
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107 (message "No library %s in search path" library)))
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108 result))
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109
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110 (defun packages-add-suffix (str)
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111 (if (null (string-match "\\.el\\'" str))
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112 (concat str ".elc")
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113 str))
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114
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115 (defun list-autoloads ()
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116 "List autoload files in (what will be) the normal lisp search path.
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117 This function is used during build to find where the global symbol files so
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118 they can be perused for their useful information."
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119 ;; Source directory may not be initialized yet.
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120 ;; (print (prin1-to-string load-path))
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121 (if (null source-directory)
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122 (setq source-directory (concat (car load-path) "/..")))
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123 (let ((files (directory-files source-directory t ".*"))
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124 file autolist)
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125 (while (setq file (car-safe files))
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126 (if (and (file-directory-p file)
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127 (file-exists-p (concat file "/" autoload-file-name)))
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128 (setq autolist (cons (concat file "/" autoload-file-name)
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129 autolist)))
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130 (setq files (cdr files)))
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131 autolist))
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132
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133 (provide 'packages)
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134
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135 ;;; packages.el ends here
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