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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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195
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40 '(
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171
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41 ;; "startup"
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163
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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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195
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48 "advice"
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49 "shadow")
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163
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50 "Lisp packages that need early byte compilation.")
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51
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52 (defvar packages-unbytecompiled-lisp
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53 '("paths.el"
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54 "version.el")
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55 "Lisp packages that should not be byte compiled.")
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56
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57 ;; Copied from subr.el
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177
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58 (defmacro lambda (&rest cdr)
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59 "Return a lambda expression.
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60 A call of the form (lambda ARGS DOCSTRING INTERACTIVE BODY) is
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61 self-quoting; the result of evaluating the lambda expression is the
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62 expression itself. The lambda expression may then be treated as a
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63 function, i.e., stored as the function value of a symbol, passed to
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64 funcall or mapcar, etc.
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65
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66 ARGS should take the same form as an argument list for a `defun'.
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67 DOCSTRING is an optional documentation string.
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68 If present, it should describe how to call the function.
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69 But documentation strings are usually not useful in nameless functions.
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70 INTERACTIVE should be a call to the function `interactive', which see.
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71 It may also be omitted.
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72 BODY should be a list of lisp expressions."
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73 ;; Note that this definition should not use backquotes; subr.el should not
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74 ;; depend on backquote.el.
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75 ;; #### - I don't see why. So long as backquote.el doesn't use anything
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76 ;; from subr.el, there's no problem with using backquotes here. --Stig
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77 ;;(list 'function (cons 'lambda cdr)))
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78 ;; -slb, This has to run in a naked temacs. Enough is enough.
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79 ;; `(function (lambda ,@cdr)))
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80 (list 'function (cons 'lambda cdr)))
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163
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81
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189
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82
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163
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83 ;; Copied from help.el, could possibly move it to here permanently.
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189
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84 ;; Unlike the FSF version, our `locate-library' uses the `locate-file'
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85 ;; primitive, which should make it lightning-fast.
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163
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86
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87 (defun locate-library (library &optional nosuffix path interactive-call)
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88 "Show the precise file name of Emacs library LIBRARY.
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89 This command searches the directories in `load-path' like `M-x load-library'
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90 to find the file that `M-x load-library RET LIBRARY RET' would load.
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91 Optional second arg NOSUFFIX non-nil means don't add suffixes `.elc' or `.el'
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92 to the specified name LIBRARY.
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93
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94 If the optional third arg PATH is specified, that list of directories
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95 is used instead of `load-path'."
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96 (interactive (list (read-string "Locate library: ")
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97 nil nil
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98 t))
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189
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99 (let ((result
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100 (locate-file
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101 library
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102 (or path load-path)
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103 (if nosuffix
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104 ""
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105 (if (or (rassq 'jka-compr-handler file-name-handler-alist)
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106 (and (boundp 'find-file-hooks)
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107 (member 'crypt-find-file-hook find-file-hooks)))
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108 ".elc:.el:"
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191
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109 ".elc:.elc.gz:elc.Z:.el:.el.gz:.el.Z::.gz:.Z"))
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189
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110 4)))
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163
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111 (and interactive-call
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189
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112 (if result
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113 (message "Library is file %s" result)
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114 (message "No library %s in search path" library)))
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163
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115 result))
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116
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117 (defun packages-add-suffix (str)
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118 (if (null (string-match "\\.el\\'" str))
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119 (concat str ".elc")
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120 str))
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121
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183
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122 (defun list-autoloads-path ()
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123 "List autoloads from precomputed load-path."
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124 (let ((path load-path)
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125 autoloads)
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126 (while path
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127 (if (file-exists-p (concat (car path)
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187
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128 autoload-file-name))
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183
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129 (setq autoloads (cons (concat (car path)
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187
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130 autoload-file-name)
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183
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131 autoloads)))
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132 (setq path (cdr path)))
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133 autoloads))
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134
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163
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135 (defun list-autoloads ()
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136 "List autoload files in (what will be) the normal lisp search path.
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137 This function is used during build to find where the global symbol files so
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138 they can be perused for their useful information."
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139 ;; Source directory may not be initialized yet.
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140 ;; (print (prin1-to-string load-path))
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141 (if (null source-directory)
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142 (setq source-directory (concat (car load-path) "/..")))
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143 (let ((files (directory-files source-directory t ".*"))
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144 file autolist)
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145 (while (setq file (car-safe files))
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146 (if (and (file-directory-p file)
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147 (file-exists-p (concat file "/" autoload-file-name)))
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148 (setq autolist (cons (concat file "/" autoload-file-name)
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149 autolist)))
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150 (setq files (cdr files)))
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151 autolist))
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152
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177
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153 ;; The following function is called from temacs
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154 (defun packages-find-packages-1 (package path-only)
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155 "Search the supplied directory for associated directories.
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156 The top level is assumed to look like:
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157 info/ Contain texinfo files for lisp installed in this hierarchy
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158 etc/ Contain data files for lisp installled in this hiearchy
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159 lisp/ Contain directories which either have straight lisp code
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160 or are self-contained packages of their own."
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161 ;; Info files
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162 (if (and (null path-only) (file-directory-p (concat package "/info")))
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203
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163 (let ((dir (concat package "/info/")))
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164 (when (not (member dir Info-default-directory-list))
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165 (nconc Info-default-directory-list (list dir)))))
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177
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166 ;; Data files
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167 (if (and (null path-only) (file-directory-p (concat package "/etc")))
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168 (setq data-directory-list
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169 (cons (concat package "/etc/") data-directory-list)))
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170 ;; Lisp files
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171 (if (file-directory-p (concat package "/lisp"))
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172 (progn
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187
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173 ;; (print (concat "DIR: " package "/lisp/"))
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185
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174 (setq load-path (cons (concat package "/lisp/") load-path))
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177
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175 (let ((dirs (directory-files (concat package "/lisp/")
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176 t "^[^-.]" nil 'dirs-only))
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177 dir)
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178 (while dirs
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179 (setq dir (car dirs))
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187
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180 ;; (print (concat "DIR: " dir "/"))
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185
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181 (setq load-path (cons (concat dir "/") load-path))
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177
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182 (packages-find-packages-1 dir path-only)
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183 (setq dirs (cdr dirs)))))))
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184
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185 ;; The following function is called from temacs
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187
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186 (defun packages-find-packages (pkg-path path-only &optional suppress-user)
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177
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187 "Search the supplied path for additional info/etc/lisp directories.
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188 Lisp directories if configured prior to build time will have equivalent
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187
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189 status as bundled packages.
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190 If the argument `path-only' is non-nil, only the `load-path' will be set,
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191 otherwise data directories and info directories will be added.
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192 If the optional argument `suppress-user' is non-nil, package directories
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193 rooted in a user login directory (like ~/.xemacs) will not be searched.
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194 This is used at dump time to suppress the builder's local environment."
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195 (let ((path (reverse pkg-path))
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177
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196 dir)
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197 (while path
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198 (setq dir (car path))
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179
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199 ;; (prin1 (concat "Find: " (expand-file-name dir) "\n"))
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187
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200 (if (null (and suppress-user
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201 (string-match "^~" dir)))
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202 (progn
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203 ;; (print dir)
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204 (packages-find-packages-1 (expand-file-name dir) path-only)))
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177
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205 (setq path (cdr path)))))
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206
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207 ;; Data-directory is really a list now. Provide something to search it for
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208 ;; directories.
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209
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189
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210 (defun locate-data-directory (name &optional dir-list)
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211 "Locate a directory in a search path DIR-LIST (a list of directories).
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212 If no DIR-LIST is supplied, it defaults to `data-directory-list'."
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213 (unless dir-list
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214 (setq dir-list data-directory-list))
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215 (let (found found-dir)
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216 (while (and (null found-dir) dir-list)
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217 (setq found (concat (car dir-list) name "/")
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218 found-dir (file-directory-p found))
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219 (or found-dir
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220 (setq found nil))
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221 (setq dir-list (cdr dir-list)))
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177
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222 found))
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223
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224 ;; If we are being loaded as part of being dumped, bootstrap the rest of the
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225 ;; load-path for loaddefs.
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226 (if (fboundp 'load-gc)
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187
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227 (packages-find-packages package-path t t))
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177
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228
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163
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229 (provide 'packages)
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230
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231 ;;; packages.el ends here
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