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428
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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@xemacs.org>
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6 ;; Maintainer: Steven L Baur <steve@xemacs.org>
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7 ;; Keywords: internal, lisp, dumped
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8
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9 ;; This file is part of XEmacs.
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10
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11 ;; XEmacs is free software; you can redistribute it and/or modify it
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12 ;; under the terms of the GNU General Public License as published by
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13 ;; the Free Software Foundation; either version 2, or (at your option)
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14 ;; any later version.
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15
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16 ;; XEmacs is distributed in the hope that it will be useful, but
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17 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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19 ;; General Public License for more details.
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20
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21 ;; You should have received a copy of the GNU General Public License
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22 ;; along with XEmacs; see the file COPYING. If not, write to the Free
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23 ;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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24 ;; 02111-1307, USA.
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25
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26 ;;; Synched up with: Not in FSF
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27
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28 ;;; Commentary:
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29
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30 ;; This file is dumped with XEmacs.
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31
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32 ;; This file provides low level facilities for XEmacs startup --
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33 ;; particularly regarding the package setup. This code has to run in
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34 ;; what we call "bare temacs" -- i.e. XEmacs without the usual Lisp
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35 ;; environment. Pay special attention:
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36
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37 ;; - not to use the `lambda' macro. Use #'(lambda ...) instead.
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38 ;; (this goes for any package loaded before `subr.el'.)
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39 ;;
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40 ;; - not to use macros, because they are not yet available (and this
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442
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41 ;; file must be loadable uncompiled.) Built in macros, such as
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42 ;; `when' and `unless' are fine, of course.
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428
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43 ;;
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44 ;; - not to use `defcustom'. If you must add user-customizable
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45 ;; variables here, use `defvar', and add the variable to
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46 ;; `cus-start.el'.
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47
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48 ;; Because of all this, make sure that the stuff you put here really
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49 ;; belongs here.
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50
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51 ;; This file requires find-paths.el.
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52
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53 ;;; Code:
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54
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55 ;;; Package versioning
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56
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57 (defvar packages-package-list nil
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454
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58 "Database of installed packages and version numbers")
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428
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59
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60 (defvar packages-hierarchy-depth 1
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61 "Depth of package hierarchies.")
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62
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63 (defvar packages-load-path-depth 1
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64 "Depth of load-path search in package hierarchies.")
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65
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66 (defvar packages-data-path-depth 1
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67 "Depth of data-path search in package hierarchies.")
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68
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69 (defvar early-packages nil
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70 "Packages early in the load path.")
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71
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72 (defvar early-package-load-path nil
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73 "Load path for packages early in the load path.")
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74
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75 (defvar late-packages nil
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76 "Packages late in the load path.")
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77
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78 (defvar late-package-load-path nil
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79 "Load path for packages late in the load path.")
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80
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81 (defvar last-packages nil
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82 "Packages last in the load path.")
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83
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84 (defvar last-package-load-path nil
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85 "Load path for packages last in the load path.")
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86
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87 (defun packages-compute-package-locations (user-init-directory)
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88 "Compute locations of the various package directories.
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89 This is a list each of whose elements describes one directory.
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90 A directory description is a three-element list.
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91 The first element is either an absolute path or a subdirectory
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92 in the XEmacs hierarchy.
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93 The second component is one of the symbols EARLY, LATE, LAST,
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94 depending on the load-path segment the hierarchy is supposed to
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95 show up in.
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96 The third component is a thunk which, if it returns NIL, causes
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97 the directory to be ignored."
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98 (list
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99 (list (paths-construct-path (list user-init-directory "mule-packages"))
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100 'early #'(lambda () (featurep 'mule)))
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101 (list (paths-construct-path (list user-init-directory "xemacs-packages"))
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102 'early #'(lambda () t))
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103 (list "site-packages" 'late #'(lambda () t))
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104 (list "infodock-packages" 'late #'(lambda () (featurep 'infodock)))
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105 (list "mule-packages" 'late #'(lambda () (featurep 'mule)))
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106 (list "xemacs-packages" 'late #'(lambda () t))))
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107
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108 (defun package-get-key-1 (info key)
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109 "Locate keyword `key' in list."
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110 (cond ((null info)
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111 nil)
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112 ((eq (car info) key)
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113 (nth 1 info))
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114 (t (package-get-key-1 (cddr info) key))))
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115
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116 (defun package-get-key (name key)
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117 "Get info `key' from package `name'."
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118 (let ((info (assq name packages-package-list)))
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119 (when info
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120 (package-get-key-1 (cdr info) key))))
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121
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122 (defun package-provide (name &rest attributes)
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123 (let ((info (if (and attributes (floatp (car attributes)))
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124 (list :version (car attributes))
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125 attributes)))
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126 (setq packages-package-list
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127 (cons (cons name info) (remassq name packages-package-list)))))
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128
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129 (defun package-require (name version)
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130 (let ((pkg (assq name packages-package-list)))
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131 (cond ((null pkg)
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132 (error "Package %s has not been loaded into this XEmacsen"
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133 name))
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134 ((< (package-get-key name :version) version)
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135 (error "Need version %g of package %s, got version %g"
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136 version name (cdr pkg)))
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137 (t t))))
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138
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139 (defun package-delete-name (name)
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140 (let (pkg)
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141 ;; Delete ALL versions of package.
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142 ;; This is pretty memory-intensive, as we use copy-alist when deleting
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143 ;; package entries, to prevent side-effects in functions that call this
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144 ;; one.
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145 (while (setq pkg (assq name packages-package-list))
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146 (setq packages-package-list (delete pkg (copy-alist
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147 packages-package-list)))
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148 )
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149 ))
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150
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151 ;;; Build time stuff
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152
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153 (defvar autoload-file-name "auto-autoloads.el"
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154 "Filename that autoloads are expected to be found in.")
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155
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156 (defvar packages-hardcoded-lisp
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157 '(
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158 ;; Nothing at this time
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159 )
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160 "Lisp packages that are always dumped with XEmacs.
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161 This includes every package that is loaded directly by a package listed
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162 in dumped-lisp.el and is not itself listed.")
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163
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164 (defvar packages-useful-lisp
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165 '("bytecomp"
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166 "byte-optimize"
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528
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167 "autoload"
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428
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168 "shadow"
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169 "cl-macs")
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170 "Lisp packages that need early byte compilation.")
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171
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172 (defvar packages-unbytecompiled-lisp
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173 '("paths.el"
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174 "dumped-lisp.el"
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175 "dumped-pkg-lisp.el"
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176 "version.el"
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177 "very-early-lisp.el")
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178 "Lisp packages that should not be byte compiled.")
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179
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180
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181 ;; Copied from help.el, could possibly move it to here permanently.
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182 ;; Unlike the FSF version, our `locate-library' uses the `locate-file'
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183 ;; primitive, which should make it lightning-fast.
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184
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185 (defun locate-library (library &optional nosuffix path interactive-call)
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186 "Show the precise file name of Emacs library LIBRARY.
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187 This command searches the directories in `load-path' like `M-x load-library'
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188 to find the file that `M-x load-library RET LIBRARY RET' would load.
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189 Optional second arg NOSUFFIX non-nil means don't add suffixes `.elc' or `.el'
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190 to the specified name LIBRARY.
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191
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192 If the optional third arg PATH is specified, that list of directories
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193 is used instead of `load-path'."
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624
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194 (interactive (list (read-library-name "Locate library: ")
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428
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195 nil nil
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196 t))
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197 (let ((result
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198 (locate-file
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199 library
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200 (or path load-path)
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201 (cond ((or (rassq 'jka-compr-handler file-name-handler-alist)
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202 (and (boundp 'find-file-hooks)
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203 (member 'crypt-find-file-hook find-file-hooks)))
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204 ;; Compression involved.
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205 (if nosuffix
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448
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206 '("" ".gz" ".Z" ".bz2")
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207 '(".elc" ".elc.gz" "elc.Z" ".elc.bz2"
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208 ".el" ".el.gz" ".el.Z" ".el.bz2"
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209 "" ".gz" ".Z" ".bz2")))
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428
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210 (t
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211 ;; No compression.
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212 (if nosuffix
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213 ""
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214 '(".elc" ".el" "")))))))
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215 (and interactive-call
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216 (if result
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217 (message "Library is file %s" result)
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218 (message "No library %s in search path" library)))
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219 result))
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220
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221 (defun packages-add-suffix (str)
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222 (if (null (string-match "\\.el\\'" str))
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223 (concat str ".elc")
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224 str))
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225
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226 (defun packages-list-autoloads-path ()
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227 "List autoloads from precomputed load-path."
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228 (let ((path load-path)
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229 autoloads)
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230 (while path
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231 (if (file-exists-p (concat (car path)
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232 autoload-file-name))
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233 (setq autoloads (cons (concat (car path)
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234 autoload-file-name)
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235 autoloads)))
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236 (setq path (cdr path)))
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237 autoloads))
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238
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239 (defun packages-list-autoloads (source-directory)
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240 "List autoload files in (what will be) the normal lisp search path.
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241 This function is used during build to find where the global symbol files so
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242 they can be perused for their useful information."
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243 (let ((files (directory-files (file-name-as-directory source-directory)
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244 t ".*"))
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245 file autolist)
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246 ;; (print (prin1-to-string source-directory))
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247 ;; (print (prin1-to-string files))
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248 (while (setq file (car-safe files))
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249 (if (and (file-directory-p file)
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250 (file-exists-p (concat (file-name-as-directory file)
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251 autoload-file-name)))
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252 (setq autolist (cons (concat (file-name-as-directory file)
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253 autoload-file-name)
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254 autolist)))
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255 (setq files (cdr files)))
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256 autolist))
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257
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258 ;; The following function cannot be called from a bare temacs
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259 (defun packages-new-autoloads ()
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260 "Return autoloads files that have been added or modified since XEmacs dump."
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261 (require 'loadhist)
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262 (let ((me (concat invocation-directory invocation-name))
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263 (path load-path)
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264 result dir)
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265 (while path
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266 (setq dir (file-truename (car path)))
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267 (let ((autoload-file (file-name-sans-extension (concat
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268 dir
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269 autoload-file-name))))
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270 ;; Check for:
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271 ;; 1. An auto-autoload file that hasn't provided a feature (because
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272 ;; it has been installed since XEmacs was dumped).
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273 ;; 2. auto-autoload.el being newer than the executable
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274 ;; 3. auto-autoload.elc being newer than the executable (the .el
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275 ;; could be missing or compressed)
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276 (when (or (and (null (file-provides autoload-file))
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277 (or (file-exists-p (concat autoload-file ".elc"))
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278 (file-exists-p (concat autoload-file ".el"))))
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279 (and (file-newer-than-file-p (concat autoload-file ".el") me)
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280 (setq autoload-file (concat autoload-file ".el")))
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281 (and (file-newer-than-file-p (concat autoload-file
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282 ".elc")
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283 me)
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284 (setq autoload-file (concat autoload-file ".elc"))))
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285 (push autoload-file result)))
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286 (setq path (cdr path)))
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287 result))
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288
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289 ;; The following function cannot be called from a bare temacs
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290 (defun packages-reload-autoloads ()
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291 "Reload new or updated auto-autoloads files.
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292 This is an extremely dangerous function to call after the user-init-files
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293 is run. Don't call it or you'll be sorry."
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294 (let ((autoload-list (packages-new-autoloads)))
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295 (while autoload-list
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296 (let* ((autoload-file (car autoload-list))
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297 (feature (car-safe (file-provides autoload-file))))
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298 (when feature
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299 ;; (message "(unload-feature %S)" feature)
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300 (unload-feature feature))
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301 (condition-case nil
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302 (load autoload-file)
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303 (t nil)))
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304 (setq autoload-list (cdr autoload-list)))))
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305
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306 ;; Data-directory is really a list now. Provide something to search it for
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307 ;; directories.
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308
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309 (defun locate-data-directory-list (name &optional dir-list)
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310 "Locate the matching list of directories in a search path DIR-LIST.
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311 If no DIR-LIST is supplied, it defaults to `data-directory-list'."
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312 (unless dir-list
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313 (setq dir-list data-directory-list))
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314 (let (found found-dir found-dir-list)
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315 (while dir-list
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316 (setq found (file-name-as-directory (concat (car dir-list) name))
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317 found-dir (file-directory-p found))
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318 (and found-dir
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319 (setq found-dir-list (cons found found-dir-list)))
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320 (setq dir-list (cdr dir-list)))
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321 (nreverse found-dir-list)))
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322
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323 ;; Data-directory is really a list now. Provide something to search it for
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324 ;; a directory.
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325
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326 (defun locate-data-directory (name &optional dir-list)
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327 "Locate a directory in a search path DIR-LIST (a list of directories).
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328 If no DIR-LIST is supplied, it defaults to `data-directory-list'."
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329 (unless dir-list
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330 (setq dir-list data-directory-list))
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331 (let (found found-dir)
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332 (while (and (null found-dir) dir-list)
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333 (setq found (file-name-as-directory (concat (car dir-list) name))
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334 found-dir (file-directory-p found))
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335 (or found-dir
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336 (setq found nil))
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337 (setq dir-list (cdr dir-list)))
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338 found))
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339
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340 ;; Data-directory is really a list now. Provide something to search it for
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341 ;; files.
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342
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343 (defun locate-data-file (name &optional dir-list)
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344 "Locate a file in a search path DIR-LIST (a list of directories).
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345 If no DIR-LIST is supplied, it defaults to `data-directory-list'.
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346 This function is basically a wrapper over `locate-file'."
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633
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347 (locate-file name (or dir-list data-directory-list)))
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428
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348
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349 ;; Path setup
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350
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351 (defun packages-find-package-directories (roots base)
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352 "Find a set of package directories."
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353 ;; make sure paths-find-version-directory and paths-find-site-directory
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354 ;; don't both pick up version-independent directories ...
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355 (let ((version-directory (paths-find-version-directory roots base nil nil t))
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442
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356 (site-directory (paths-find-site-directory roots base nil nil t)))
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428
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357 (paths-uniq-append
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358 (and version-directory (list version-directory))
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359 (and site-directory (list site-directory)))))
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360
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444
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361 (defvar packages-special-base-regexp "^\\(etc\\|info\\|man\\|lisp\\|lib-src\\|bin\\|pkginfo\\)$"
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428
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362 "Special subdirectories of packages.")
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363
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364 (defvar packages-no-package-hierarchy-regexp
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365 (concat "\\(" paths-version-control-filename-regexp "\\)"
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366 "\\|"
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367 "\\(" packages-special-base-regexp "\\)")
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368 "Directories which can't be the roots of package hierarchies.")
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369
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370 (defun packages-find-packages-in-directories (directories)
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371 "Find all packages underneath directories in DIRECTORIES."
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372 (paths-find-recursive-path directories
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373 packages-hierarchy-depth
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374 packages-no-package-hierarchy-regexp))
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375
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376 (defun packages-split-path (path)
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377 "Split PATH at \"\", return pair with two components.
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378 The second component is shared with PATH."
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379 (let ((reverse-tail '())
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380 (rest path))
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381 (while (and rest (null (string-equal "" (car rest))))
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382 (setq reverse-tail (cons (car rest) reverse-tail))
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383 (setq rest (cdr rest)))
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384 (if (null rest)
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385 (cons path nil)
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386 (cons (nreverse reverse-tail) (cdr rest)))))
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387
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388 (defun packages-split-package-path (package-path)
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389 "Split up PACKAGE-PATH into early, late and last components.
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390 The separation is by \"\" components.
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391 This returns (LIST EARLY-PACKAGES LATE-PACKAGES LAST-PACKAGES)."
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392 ;; When in doubt, it's late
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393 (let* ((stuff (packages-split-path package-path))
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394 (early (and (cdr stuff) (car stuff)))
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395 (late+last (or (cdr stuff) (car stuff)))
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396 (stuff (packages-split-path late+last))
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397 (late (car stuff))
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398 (last (cdr stuff)))
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399 (list (packages-find-packages-in-directories early)
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400 (packages-find-packages-in-directories late)
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401 (packages-find-packages-in-directories last))))
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402
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403 (defun packages-deconstruct (list consumer)
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404 "Deconstruct LIST and feed it to CONSUMER."
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405 (apply consumer list))
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406
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407 (defun packages-find-packages-by-name (roots name)
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408 "Find a package hierarchy by its name."
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409 (packages-find-packages-in-directories
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410 (if (and (file-name-absolute-p name)
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411 (file-name-directory (expand-file-name name)))
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412 (list (file-name-as-directory (expand-file-name name)))
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413 (packages-find-package-directories roots name))))
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414
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415 (defun packages-find-packages-at-time
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416 (roots package-locations time &optional default)
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417 "Find packages at given time.
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418 For the format of PACKAGE-LOCATIONS, see the global variable of the same name.
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419 TIME is either 'EARLY, 'LATE, or 'LAST.
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420 DEFAULT is a default list of packages."
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421 (or default
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422 (let ((packages '()))
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423 (while package-locations
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444
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424 (packages-deconstruct
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428
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425 (car package-locations)
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426 #'(lambda (name a-time thunk)
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427 (if (and (eq time a-time)
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428 (funcall thunk))
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429 (setq packages
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430 (nconc packages
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431 (packages-find-packages-by-name roots name))))))
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432 (setq package-locations (cdr package-locations)))
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433 packages)))
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434
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435 (defun packages-find-packages (roots package-locations)
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436 "Find the packages."
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437 (let ((envvar-value (getenv "EMACSPACKAGEPATH")))
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438 (if envvar-value
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439 (packages-split-package-path (paths-decode-directory-path envvar-value))
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440 (packages-deconstruct
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441 (packages-split-package-path configure-package-path)
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442 #'(lambda (configure-early-packages
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|
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443 configure-late-packages
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444 configure-last-packages)
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445 (list (packages-find-packages-at-time roots package-locations 'early
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|
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446 configure-early-packages)
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|
447 (packages-find-packages-at-time roots package-locations 'late
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|
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448 configure-late-packages)
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|
|
449 (packages-find-packages-at-time roots package-locations 'last
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|
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450 configure-last-packages)))))))
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451
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|
|
452 (defun packages-find-package-library-path (packages suffixes)
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453 "Construct a path into a component of the packages hierarchy.
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|
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454 PACKAGES is a list of package directories.
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|
|
455 SUFFIXES is a list of names of package subdirectories to look for."
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|
|
456 (let ((directories
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|
|
457 (apply
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|
|
458 #'nconc
|
|
|
459 (mapcar #'(lambda (package)
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|
|
460 (mapcar #'(lambda (suffix)
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|
|
461 (file-name-as-directory (concat package suffix)))
|
|
|
462 suffixes))
|
|
|
463 packages))))
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|
|
464 (paths-directories-which-exist directories)))
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|
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465
|
|
|
466 (defun packages-find-package-load-path (packages)
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|
|
467 "Construct the load-path component for packages.
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|
|
468 PACKAGES is a list of package directories."
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|
|
469 (paths-find-recursive-load-path
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|
|
470 (packages-find-package-library-path packages
|
|
|
471 '("lisp"))
|
|
|
472 packages-load-path-depth))
|
|
|
473
|
|
|
474 (defun packages-find-package-exec-path (packages)
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|
|
475 "Construct the exec-path component for packages.
|
|
|
476 PACKAGES is a list of package directories."
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|
|
477 (packages-find-package-library-path packages
|
|
|
478 (list (paths-construct-path
|
|
|
479 (list "bin" system-configuration))
|
|
|
480 "lib-src")))
|
|
|
481
|
|
|
482 (defun packages-find-package-info-path (packages)
|
|
|
483 "Construct the info-path component for packages.
|
|
|
484 PACKAGES is a list of package directories."
|
|
|
485 (packages-find-package-library-path packages '("info")))
|
|
|
486
|
|
|
487 (defun packages-find-package-data-path (packages)
|
|
|
488 "Construct the data-path component for packages.
|
|
|
489 PACKAGES is a list of package directories."
|
|
|
490 (paths-find-recursive-load-path
|
|
|
491 (packages-find-package-library-path packages
|
|
|
492 '("etc"))
|
|
|
493 packages-data-path-depth))
|
|
|
494
|
|
|
495 ;; Loading package initialization files
|
|
|
496
|
|
|
497 (defun packages-load-package-lisps (package-load-path base)
|
|
|
498 "Load all Lisp files of a certain name along a load path.
|
|
|
499 BASE is the base name of the files."
|
|
|
500 (mapcar #'(lambda (dir)
|
|
|
501 (let ((file-name (expand-file-name base dir)))
|
|
|
502 (condition-case error
|
|
|
503 (load file-name t t)
|
|
|
504 (error
|
|
|
505 (warn (format "Autoload error in: %s:\n\t%s"
|
|
|
506 file-name
|
|
|
507 (with-output-to-string
|
|
|
508 (display-error error nil))))))))
|
|
|
509 package-load-path))
|
|
|
510
|
|
|
511 (defun packages-load-package-auto-autoloads (package-load-path)
|
|
|
512 "Load auto-autoload files along a load path."
|
|
|
513 (packages-load-package-lisps package-load-path
|
|
|
514 (file-name-sans-extension autoload-file-name)))
|
|
|
515
|
|
|
516 (defun packages-handle-package-dumped-lisps (handle package-load-path)
|
|
|
517 "Load dumped-lisp.el files along a load path.
|
|
|
518 Call HANDLE on each file off definitions of PACKAGE-LISP there."
|
|
|
519 (mapcar #'(lambda (dir)
|
|
|
520 (let ((file-name (expand-file-name "dumped-lisp.el" dir)))
|
|
|
521 (if (file-exists-p file-name)
|
|
|
522 (let (package-lisp
|
|
|
523 ;; 20.4 packages could set this
|
|
|
524 preloaded-file-list)
|
|
|
525 (load file-name)
|
|
|
526 ;; dumped-lisp.el could have set this ...
|
|
|
527 (if package-lisp
|
|
|
528 (mapcar #'(lambda (base)
|
|
|
529 (funcall handle base))
|
|
|
530 package-lisp))))))
|
|
|
531 package-load-path))
|
|
|
532
|
|
|
533 (defun packages-load-package-dumped-lisps (package-load-path)
|
|
|
534 "Load dumped-lisp.el files along a load path.
|
|
444
|
535 Also load files off PACKAGE-LISP definitions there."
|
|
428
|
536 (packages-handle-package-dumped-lisps #'load package-load-path))
|
|
|
537
|
|
|
538 (defun packages-collect-package-dumped-lisps (package-load-path)
|
|
|
539 "Load dumped-lisp.el files along a load path.
|
|
444
|
540 Return list of files off PACKAGE-LISP definitions there."
|
|
428
|
541 (let ((*files* '()))
|
|
|
542 (packages-handle-package-dumped-lisps
|
|
|
543 #'(lambda (file)
|
|
|
544 (setq *files* (cons file *files*)))
|
|
|
545 package-load-path)
|
|
|
546 (reverse *files*)))
|
|
|
547
|
|
|
548 (provide 'packages)
|
|
|
549
|
|
|
550 ;;; packages.el ends here
|
