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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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1330
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4 ;; Copyright (C) 2002, 2003 Ben Wing.
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428
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5
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6 ;; Author: Steven L Baur <steve@xemacs.org>
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7 ;; Maintainer: Steven L Baur <steve@xemacs.org>
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8 ;; Keywords: internal, lisp, dumped
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9
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10 ;; This file is part of XEmacs.
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11
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12 ;; XEmacs is free software; you can redistribute it and/or modify it
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13 ;; under the terms of the GNU General Public License as published by
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14 ;; the Free Software Foundation; either version 2, or (at your option)
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15 ;; any later version.
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16
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17 ;; XEmacs is distributed in the hope that it will be useful, but
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18 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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20 ;; General Public License for more details.
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21
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22 ;; You should have received a copy of the GNU General Public License
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23 ;; along with XEmacs; see the file COPYING. If not, write to the Free
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24 ;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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25 ;; 02111-1307, USA.
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26
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27 ;;; Synched up with: Not in FSF
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28
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29 ;;; Commentary:
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30
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31 ;; This file is dumped with XEmacs.
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32
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33 ;; This file provides low level facilities for XEmacs startup --
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34 ;; particularly regarding the package setup. This code has to run in
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35 ;; what we call "bare temacs" -- i.e. XEmacs without the usual Lisp
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36 ;; environment. Pay special attention:
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37
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38 ;; - not to use the `lambda' macro. Use #'(lambda ...) instead.
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39 ;; (this goes for any package loaded before `subr.el'.)
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40 ;;
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41 ;; - not to use macros, because they are not yet available (and this
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442
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42 ;; file must be loadable uncompiled.) Built in macros, such as
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43 ;; `when' and `unless' are fine, of course.
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428
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44 ;;
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45 ;; - not to use `defcustom'. If you must add user-customizable
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46 ;; variables here, use `defvar', and add the variable to
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47 ;; `cus-start.el'.
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48
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49 ;; Because of all this, make sure that the stuff you put here really
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50 ;; belongs here.
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51
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52 ;; This file requires find-paths.el.
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53
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54 ;;; Code:
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55
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56 ;;; Package versioning
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57
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58 (defvar packages-package-list nil
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59 "Database of installed packages and version numbers")
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60
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61 (defvar packages-hierarchy-depth 1
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62 "Depth of package hierarchies.")
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63
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64 (defvar packages-load-path-depth 1
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65 "Depth of load-path search in package hierarchies.")
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66
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67 (defvar packages-data-path-depth 1
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68 "Depth of data-path search in package hierarchies.")
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69
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70 (defvar early-packages nil
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71 "Packages early in the load path.")
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72
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73 (defvar early-package-load-path nil
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74 "Load path for packages early in the load path.")
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75
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76 (defvar late-packages nil
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77 "Packages late in the load path.")
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78
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79 (defvar late-package-load-path nil
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80 "Load path for packages late in the load path.")
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81
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82 (defvar last-packages nil
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83 "Packages last in the load path.")
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84
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85 (defvar last-package-load-path nil
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86 "Load path for packages last in the load path.")
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87
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88 (defun packages-compute-package-locations (user-init-directory)
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89 "Compute locations of the various package directories.
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90 This is a list each of whose elements describes one directory.
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91 A directory description is a three-element list.
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92 The first element is either an absolute path or a subdirectory
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93 in the XEmacs hierarchy.
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94 The second component is one of the symbols EARLY, LATE, LAST,
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95 depending on the load-path segment the hierarchy is supposed to
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96 show up in.
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97 The third component is a thunk which, if it returns NIL, causes
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98 the directory to be ignored."
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99 (list
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689
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100 (list (paths-construct-path (list user-init-directory "site-packages"))
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101 'early #'(lambda () t))
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102 (list (paths-construct-path (list user-init-directory "infodock-packages"))
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103 'early #'(lambda () (featurep 'infodock)))
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428
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104 (list (paths-construct-path (list user-init-directory "mule-packages"))
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105 'early #'(lambda () (featurep 'mule)))
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106 (list (paths-construct-path (list user-init-directory "xemacs-packages"))
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107 'early #'(lambda () t))
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108 (list "site-packages" 'late #'(lambda () t))
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109 (list "infodock-packages" 'late #'(lambda () (featurep 'infodock)))
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110 (list "mule-packages" 'late #'(lambda () (featurep 'mule)))
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111 (list "xemacs-packages" 'late #'(lambda () t))))
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112
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113 (defun package-get-key-1 (info key)
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114 "Locate keyword `key' in list."
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115 (cond ((null info)
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116 nil)
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117 ((eq (car info) key)
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118 (nth 1 info))
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119 (t (package-get-key-1 (cddr info) key))))
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120
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121 (defun package-get-key (name key)
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122 "Get info `key' from package `name'."
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123 (let ((info (assq name packages-package-list)))
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124 (when info
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125 (package-get-key-1 (cdr info) key))))
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126
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127 (defun package-provide (name &rest attributes)
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128 (let ((info (if (and attributes (floatp (car attributes)))
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129 (list :version (car attributes))
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130 attributes)))
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131 (setq packages-package-list
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132 (cons (cons name info) (remassq name packages-package-list)))))
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133
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134 (defun package-require (name version)
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135 (let ((pkg (assq name packages-package-list)))
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136 (cond ((null pkg)
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137 (error 'invalid-state
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138 (format "Package %s has not been loaded into this XEmacsen"
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139 name)))
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428
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140 ((< (package-get-key name :version) version)
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141 (error 'search-failed
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142 (format "Need version %g of package %s, got version %g"
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143 version name (package-get-key name :version))))
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144 (t t))))
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145
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146 (defun package-delete-name (name)
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147 (let (pkg)
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148 ;; Delete ALL versions of package.
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149 ;; This is pretty memory-intensive, as we use copy-alist when deleting
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150 ;; package entries, to prevent side-effects in functions that call this
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151 ;; one.
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152 (while (setq pkg (assq name packages-package-list))
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153 (setq packages-package-list (delete pkg (copy-alist
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154 packages-package-list))))))
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155
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156 ;;; Build time stuff
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157
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158 (defvar autoload-file-name "auto-autoloads.el"
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159 "Filename that autoloads are expected to be found in.")
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160
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161 ;; Moved from help.el.
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428
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162 ;; Unlike the FSF version, our `locate-library' uses the `locate-file'
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163 ;; primitive, which should make it lightning-fast.
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164
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165 (defun locate-library (library &optional nosuffix path interactive-call)
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166 "Show the precise file name of Emacs library LIBRARY.
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167 This command searches the directories in `load-path' like `M-x load-library'
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168 to find the file that `M-x load-library RET LIBRARY RET' would load.
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169 Optional second arg NOSUFFIX non-nil means don't add suffixes `.elc' or `.el'
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170 to the specified name LIBRARY.
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171
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172 If the optional third arg PATH is specified, that list of directories
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173 is used instead of `load-path'."
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624
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174 (interactive (list (read-library-name "Locate library: ")
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428
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175 nil nil
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176 t))
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177 (let ((result
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178 (locate-file
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179 library
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180 (or path load-path)
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181 (cond ((or (rassq 'jka-compr-handler file-name-handler-alist)
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182 (and (boundp 'find-file-hooks)
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183 (member 'crypt-find-file-hook find-file-hooks)))
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184 ;; Compression involved.
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185 (if nosuffix
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448
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186 '("" ".gz" ".Z" ".bz2")
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187 '(".elc" ".elc.gz" "elc.Z" ".elc.bz2"
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188 ".el" ".el.gz" ".el.Z" ".el.bz2"
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189 "" ".gz" ".Z" ".bz2")))
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428
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190 (t
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191 ;; No compression.
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192 (if nosuffix
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193 ""
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194 '(".elc" ".el" "")))))))
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195 (and interactive-call
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196 (if result
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197 (message "Library is file %s" result)
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198 (message "No library %s in search path" library)))
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199 result))
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200
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201 (defun packages-add-suffix (str)
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202 (if (null (string-match "\\.el\\'" str))
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203 (concat str ".elc")
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204 str))
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205
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206 (defun packages-list-autoloads-path ()
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207 "List autoloads from precomputed load-path."
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208 (let ((path load-path)
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209 autoloads)
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210 (while path
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211 (if (file-exists-p (concat (car path)
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212 autoload-file-name))
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213 (setq autoloads (cons (concat (car path)
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214 autoload-file-name)
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215 autoloads)))
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216 (setq path (cdr path)))
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217 autoloads))
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218
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219 (defun packages-list-autoloads (source-directory)
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220 "List autoload files in (what will be) the normal lisp search path.
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221 This function is used during build to find where the global symbol files so
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222 they can be perused for their useful information."
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223 (let ((files (directory-files (file-name-as-directory source-directory)
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224 t ".*"))
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225 file autolist)
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226 ;; (print (prin1-to-string source-directory))
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227 ;; (print (prin1-to-string files))
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228 (while (setq file (car-safe files))
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229 (if (and (file-directory-p file)
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230 (file-exists-p (concat (file-name-as-directory file)
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231 autoload-file-name)))
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232 (setq autolist (cons (concat (file-name-as-directory file)
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233 autoload-file-name)
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234 autolist)))
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235 (setq files (cdr files)))
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236 autolist))
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237
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238 ;; The following function cannot be called from a bare temacs
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239 (defun packages-new-autoloads ()
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240 "Return autoloads files that have been added or modified since XEmacs dump."
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241 (require 'loadhist)
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242 (let ((me (concat invocation-directory invocation-name))
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243 (path load-path)
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244 result dir)
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245 (while path
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246 (setq dir (file-truename (car path)))
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247 (let ((autoload-file (file-name-sans-extension (concat
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248 dir
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249 autoload-file-name))))
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250 ;; Check for:
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251 ;; 1. An auto-autoload file that hasn't provided a feature (because
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252 ;; it has been installed since XEmacs was dumped).
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253 ;; 2. auto-autoload.el being newer than the executable
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254 ;; 3. auto-autoload.elc being newer than the executable (the .el
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255 ;; could be missing or compressed)
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256 (when (or (and (null (file-provides autoload-file))
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257 (or (file-exists-p (concat autoload-file ".elc"))
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258 (file-exists-p (concat autoload-file ".el"))))
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259 (and (file-newer-than-file-p (concat autoload-file ".el") me)
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260 (setq autoload-file (concat autoload-file ".el")))
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261 (and (file-newer-than-file-p (concat autoload-file
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262 ".elc")
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263 me)
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264 (setq autoload-file (concat autoload-file ".elc"))))
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265 (push autoload-file result)))
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266 (setq path (cdr path)))
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267 result))
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268
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269 ;; The following function cannot be called from a bare temacs
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270 (defun packages-reload-autoloads ()
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271 "Reload new or updated auto-autoloads files.
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272 This is an extremely dangerous function to call after the user-init-files
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273 is run. Don't call it or you'll be sorry."
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274 (let ((autoload-list (packages-new-autoloads)))
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275 (while autoload-list
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276 (let* ((autoload-file (car autoload-list))
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277 (feature (car-safe (file-provides autoload-file))))
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278 (when feature
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279 ;; (message "(unload-feature %S)" feature)
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280 (unload-feature feature))
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281 (condition-case nil
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282 (load autoload-file)
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283 (t nil)))
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284 (setq autoload-list (cdr autoload-list)))))
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285
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286 ;; Data-directory is really a list now. Provide something to search it for
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287 ;; directories.
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288
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289 (defun locate-data-directory-list (name &optional dir-list)
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290 "Locate the matching list of directories in a search path DIR-LIST.
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291 If no DIR-LIST is supplied, it defaults to `data-directory-list'."
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292 (unless dir-list
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293 (setq dir-list data-directory-list))
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294 (let (found found-dir found-dir-list)
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295 (while dir-list
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296 (setq found (file-name-as-directory (concat (car dir-list) name))
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297 found-dir (file-directory-p found))
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298 (and found-dir
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299 (setq found-dir-list (cons found found-dir-list)))
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300 (setq dir-list (cdr dir-list)))
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301 (nreverse found-dir-list)))
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302
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303 ;; Data-directory is really a list now. Provide something to search it for
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304 ;; a directory.
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305
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306 (defun locate-data-directory (name &optional dir-list)
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307 "Locate a directory in a search path DIR-LIST (a list of directories).
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308 If no DIR-LIST is supplied, it defaults to `data-directory-list'."
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309 (unless dir-list
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310 (setq dir-list data-directory-list))
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311 (let (found found-dir)
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312 (while (and (null found-dir) dir-list)
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313 (setq found (file-name-as-directory (concat (car dir-list) name))
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314 found-dir (file-directory-p found))
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315 (or found-dir
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316 (setq found nil))
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317 (setq dir-list (cdr dir-list)))
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318 found))
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319
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320 ;; Data-directory is really a list now. Provide something to search it for
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321 ;; files.
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322
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323 (defun locate-data-file (name &optional dir-list)
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324 "Locate a file in a search path DIR-LIST (a list of directories).
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325 If no DIR-LIST is supplied, it defaults to `data-directory-list'.
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326 This function is basically a wrapper over `locate-file'."
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633
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327 (locate-file name (or dir-list data-directory-list)))
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428
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328
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329 ;; Path setup
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330
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331 (defun packages-find-package-directories (roots base)
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332 "Find a set of package directories."
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333 ;; make sure paths-find-version-directory and paths-find-site-directory
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334 ;; don't both pick up version-independent directories ...
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335 (let ((version-directory (paths-find-version-directory roots base nil nil t))
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1218
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336 (site-directory (paths-find-site-directory roots base)))
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428
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337 (paths-uniq-append
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338 (and version-directory (list version-directory))
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339 (and site-directory (list site-directory)))))
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340
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444
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341 (defvar packages-special-base-regexp "^\\(etc\\|info\\|man\\|lisp\\|lib-src\\|bin\\|pkginfo\\)$"
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428
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342 "Special subdirectories of packages.")
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343
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344 (defvar packages-no-package-hierarchy-regexp
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345 (concat "\\(" paths-version-control-filename-regexp "\\)"
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346 "\\|"
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347 "\\(" packages-special-base-regexp "\\)")
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348 "Directories which can't be the roots of package hierarchies.")
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349
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350 (defun packages-find-packages-in-directories (directories)
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351 "Find all packages underneath directories in DIRECTORIES."
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352 (paths-find-recursive-path directories
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353 packages-hierarchy-depth
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354 packages-no-package-hierarchy-regexp))
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355
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356 (defun packages-split-path (path)
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357 "Split PATH at \"\", return pair with two components.
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358 The second component is shared with PATH."
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359 (let ((reverse-tail '())
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360 (rest path))
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361 (while (and rest (null (string-equal "" (car rest))))
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362 (setq reverse-tail (cons (car rest) reverse-tail))
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363 (setq rest (cdr rest)))
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364 (if (null rest)
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365 (cons path nil)
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366 (cons (nreverse reverse-tail) (cdr rest)))))
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367
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368 (defun packages-split-package-path (package-path)
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369 "Split up PACKAGE-PATH into early, late and last components.
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370 The separation is by \"\" components.
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371 This returns (LIST EARLY-PACKAGES LATE-PACKAGES LAST-PACKAGES)."
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372 ;; When in doubt, it's late
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373 (let* ((stuff (packages-split-path package-path))
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374 (early (and (cdr stuff) (car stuff)))
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375 (late+last (or (cdr stuff) (car stuff)))
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376 (stuff (packages-split-path late+last))
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377 (late (car stuff))
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378 (last (cdr stuff)))
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379 (list (packages-find-packages-in-directories early)
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380 (packages-find-packages-in-directories late)
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381 (packages-find-packages-in-directories last))))
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382
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383 (defun packages-deconstruct (list consumer)
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384 "Deconstruct LIST and feed it to CONSUMER."
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385 (apply consumer list))
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386
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387 (defun packages-find-packages-by-name (roots name)
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388 "Find a package hierarchy by its name."
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389 (packages-find-packages-in-directories
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390 (if (and (file-name-absolute-p name)
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391 (file-name-directory (expand-file-name name)))
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392 (list (file-name-as-directory (expand-file-name name)))
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393 (packages-find-package-directories roots name))))
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394
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395 (defun packages-find-packages-at-time
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396 (roots package-locations time &optional default)
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397 "Find packages at given time.
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398 For the format of PACKAGE-LOCATIONS, see the global variable of the same name.
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399 TIME is either 'EARLY, 'LATE, or 'LAST.
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400 DEFAULT is a default list of packages."
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401 (or default
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402 (let ((packages '()))
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403 (while package-locations
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444
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404 (packages-deconstruct
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428
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405 (car package-locations)
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406 #'(lambda (name a-time thunk)
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407 (if (and (eq time a-time)
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408 (funcall thunk))
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409 (setq packages
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410 (nconc packages
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411 (packages-find-packages-by-name roots name))))))
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412 (setq package-locations (cdr package-locations)))
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413 packages)))
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414
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415 (defun packages-find-packages (roots package-locations)
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416 "Find the packages."
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417 (let ((envvar-value (getenv "EMACSPACKAGEPATH")))
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418 (if envvar-value
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419 (packages-split-package-path (paths-decode-directory-path envvar-value))
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420 (packages-deconstruct
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421 (packages-split-package-path configure-package-path)
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422 #'(lambda (configure-early-packages
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423 configure-late-packages
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424 configure-last-packages)
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425 (list (packages-find-packages-at-time roots package-locations 'early
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426 configure-early-packages)
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427 (packages-find-packages-at-time roots package-locations 'late
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428 configure-late-packages)
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429 (packages-find-packages-at-time roots package-locations 'last
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430 configure-last-packages)))))))
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431
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432 (defun packages-find-package-library-path (packages suffixes)
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433 "Construct a path into a component of the packages hierarchy.
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434 PACKAGES is a list of package directories.
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435 SUFFIXES is a list of names of package subdirectories to look for."
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436 (let ((directories
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437 (apply
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438 #'nconc
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439 (mapcar #'(lambda (package)
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440 (mapcar #'(lambda (suffix)
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441 (file-name-as-directory (concat package suffix)))
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442 suffixes))
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443 packages))))
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444 (paths-directories-which-exist directories)))
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445
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446 (defun packages-find-package-load-path (packages)
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447 "Construct the load-path component for packages.
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448 PACKAGES is a list of package directories."
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449 (paths-find-recursive-load-path
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450 (packages-find-package-library-path packages
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451 '("lisp"))
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452 packages-load-path-depth))
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453
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454 (defun packages-find-package-exec-path (packages)
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455 "Construct the exec-path component for packages.
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456 PACKAGES is a list of package directories."
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457 (packages-find-package-library-path packages
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458 (list (paths-construct-path
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459 (list "bin" system-configuration))
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460 "lib-src")))
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461
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462 (defun packages-find-package-info-path (packages)
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463 "Construct the info-path component for packages.
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464 PACKAGES is a list of package directories."
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465 (packages-find-package-library-path packages '("info")))
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466
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467 (defun packages-find-package-data-path (packages)
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468 "Construct the data-path component for packages.
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469 PACKAGES is a list of package directories."
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470 (paths-find-recursive-load-path
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471 (packages-find-package-library-path packages
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472 '("etc"))
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473 packages-data-path-depth))
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474
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475 ;; Loading package initialization files
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476
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477 (defun packages-load-package-lisps (package-load-path base)
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478 "Load all Lisp files of a certain name along a load path.
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479 BASE is the base name of the files."
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480 (mapcar #'(lambda (dir)
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793
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481 (let ((file-name (expand-file-name base dir)))
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482 (with-trapping-errors
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483 :operation (format "Autoload %s" file-name)
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484 :class 'packages
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485 (load file-name t t))))
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486 package-load-path))
|
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428
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487
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488 (defun packages-load-package-auto-autoloads (package-load-path)
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489 "Load auto-autoload files along a load path."
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490 (packages-load-package-lisps package-load-path
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491 (file-name-sans-extension autoload-file-name)))
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492
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493 (defun packages-handle-package-dumped-lisps (handle package-load-path)
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494 "Load dumped-lisp.el files along a load path.
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|
495 Call HANDLE on each file off definitions of PACKAGE-LISP there."
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496 (mapcar #'(lambda (dir)
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497 (let ((file-name (expand-file-name "dumped-lisp.el" dir)))
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498 (if (file-exists-p file-name)
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499 (let (package-lisp
|
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500 ;; 20.4 packages could set this
|
|
|
501 preloaded-file-list)
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502 (load file-name)
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|
503 ;; dumped-lisp.el could have set this ...
|
|
|
504 (if package-lisp
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|
|
505 (mapcar #'(lambda (base)
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|
|
506 (funcall handle base))
|
|
|
507 package-lisp))))))
|
|
|
508 package-load-path))
|
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509
|
|
|
510 (defun packages-load-package-dumped-lisps (package-load-path)
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|
|
511 "Load dumped-lisp.el files along a load path.
|
|
444
|
512 Also load files off PACKAGE-LISP definitions there."
|
|
428
|
513 (packages-handle-package-dumped-lisps #'load package-load-path))
|
|
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514
|
|
|
515 (defun packages-collect-package-dumped-lisps (package-load-path)
|
|
|
516 "Load dumped-lisp.el files along a load path.
|
|
444
|
517 Return list of files off PACKAGE-LISP definitions there."
|
|
428
|
518 (let ((*files* '()))
|
|
|
519 (packages-handle-package-dumped-lisps
|
|
|
520 #'(lambda (file)
|
|
|
521 (setq *files* (cons file *files*)))
|
|
|
522 package-load-path)
|
|
|
523 (reverse *files*)))
|
|
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524
|
|
|
525 (provide 'packages)
|
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526
|
|
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527 ;;; packages.el ends here
|
