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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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2557
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4 ;; Copyright (C) 2002, 2003, 2004 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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428
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60
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2456
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61 ;;; Directories and paths
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62
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63 ;;; Terminology:
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64
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65 ;;; A *package hierarchy* is a directory that contains a collection of
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66 ;;; packages; it has lisp/, info/, etc/ etc. subdirectories that
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67 ;;; contain the files constituting the packages.
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68
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69 ;;; A *package directory* contains package hierarchies---the package
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70 ;;; hierarchies are typically in directories "xemacs-packages",
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71 ;;; "mule-packages", and so on. A package hierarchy might only be
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72 ;;; applicable for specific variants of XEmacs.
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73
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74 ;;; Package hierarchies come in "early", "late", and "last" variants,
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75 ;;; depending on their relative location in the various paths.
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76 ;;; "Early" hierarchies are typically in the user's home directory,
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77 ;;; "late" hierarchies are typically part of the XEmacs installation,
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78 ;;; and "last" package hierarchies are for special purposes, such as
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79 ;;; making the packages of some previous XEmacs version available.
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428
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80
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81 (defvar packages-load-path-depth 1
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82 "Depth of load-path search in package hierarchies.")
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83
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84 (defvar packages-data-path-depth 1
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85 "Depth of data-path search in package hierarchies.")
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86
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87 (defvar early-package-hierarchies nil
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88 "Package hierarchies early in the load path.")
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89
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90 (defvar early-package-load-path nil
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91 "Load path for packages early in the load path.")
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92
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93 (defvar late-package-hierarchies nil
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94 "Package hierarchies late in the load path.")
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95
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96 (defvar late-package-load-path nil
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97 "Load path for packages late in the load path.")
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98
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99 (defvar last-package-hierarchies nil
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100 "Package hierarchies last in the load path.")
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101
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102 (defvar last-package-load-path nil
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103 "Load path for packages last in the load path.")
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104
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105 (defun packages-package-hierarchy-directory-names ()
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106 "Returns a list package hierarchy directory names.
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107 These are the valid immediate directory names of package
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108 directories, directories with higher priority first"
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109 (paths-filter #'(lambda (x) x)
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110 `("site-packages"
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111 ,(when (featurep 'infodock) "infodock-packages")
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112 ,(when (featurep 'mule) "mule-packages")
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113 "xemacs-packages")))
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428
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114
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115 (defun package-get-key-1 (info key)
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116 "Locate keyword `key' in list."
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117 (cond ((null info)
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118 nil)
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119 ((eq (car info) key)
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120 (nth 1 info))
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121 (t (package-get-key-1 (cddr info) key))))
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122
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123 (defun package-get-key (name key)
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124 "Get info `key' from package `name'."
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125 (let ((info (assq name packages-package-list)))
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126 (when info
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127 (package-get-key-1 (cdr info) key))))
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128
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129 (defun package-provide (name &rest attributes)
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130 (let ((info (if (and attributes (floatp (car attributes)))
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131 (list :version (car attributes))
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132 attributes)))
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133 (setq packages-package-list
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134 (cons (cons name info) (remassq name packages-package-list)))))
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135
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136 (defun package-suppress (package file form)
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137 "Set up a package-suppress condition FORM for FILE in PACKAGE.
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138 When XEmacs searches for a file in the load path, it will ignore FILE
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139 if FORM evaluates to non-nil."
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140 (setq load-suppress-alist
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141 (acons (expand-file-name file load-file-name) form
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142 load-suppress-alist)))
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143
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428
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144 (defun package-require (name version)
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145 (let ((pkg (assq name packages-package-list)))
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146 (cond ((null pkg)
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147 (error 'invalid-state
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148 (format "Package %s has not been loaded into this XEmacsen"
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149 name)))
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428
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150 ((< (package-get-key name :version) version)
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151 (error 'search-failed
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152 (format "Need version %g of package %s, got version %g"
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153 version name (package-get-key name :version))))
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154 (t t))))
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155
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156 (defun package-delete-name (name)
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157 (let (pkg)
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158 ;; Delete ALL versions of package.
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159 ;; This is pretty memory-intensive, as we use copy-alist when deleting
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160 ;; package entries, to prevent side-effects in functions that call this
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161 ;; one.
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162 (while (setq pkg (assq name packages-package-list))
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163 (setq packages-package-list (delete pkg (copy-alist
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164 packages-package-list))))))
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165
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166 ;;; Build time stuff
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167
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168 (defvar autoload-file-name "auto-autoloads.el"
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169 "Filename that autoloads are expected to be found in.")
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170
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1330
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171 ;; Moved from help.el.
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428
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172 ;; Unlike the FSF version, our `locate-library' uses the `locate-file'
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173 ;; primitive, which should make it lightning-fast.
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174
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175 (defun locate-library (library &optional nosuffix path interactive-call)
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176 "Show the precise file name of Emacs library LIBRARY.
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177 This command searches the directories in `load-path' like `M-x load-library'
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178 to find the file that `M-x load-library RET LIBRARY RET' would load.
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179 Optional second arg NOSUFFIX non-nil means don't add suffixes `.elc' or `.el'
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180 to the specified name LIBRARY.
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181
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182 If the optional third arg PATH is specified, that list of directories
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183 is used instead of `load-path'."
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624
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184 (interactive (list (read-library-name "Locate library: ")
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185 nil nil
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186 t))
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187 (let ((result
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188 (locate-file
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189 library
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190 (or path load-path)
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191 (cond ((or (rassq 'jka-compr-handler file-name-handler-alist)
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192 (and (boundp 'find-file-hooks)
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193 (member 'crypt-find-file-hook find-file-hooks)))
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194 ;; Compression involved.
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195 (if nosuffix
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448
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196 '("" ".gz" ".Z" ".bz2")
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197 '(".elc" ".elc.gz" "elc.Z" ".elc.bz2"
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198 ".el" ".el.gz" ".el.Z" ".el.bz2"
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199 "" ".gz" ".Z" ".bz2")))
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428
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200 (t
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201 ;; No compression.
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202 (if nosuffix
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203 ""
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204 '(".elc" ".el" "")))))))
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205 (and interactive-call
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206 (if result
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207 (message "Library is file %s" result)
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208 (message "No library %s in search path" library)))
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209 result))
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210
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211 (defun packages-add-suffix (str)
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212 (if (null (string-match "\\.el\\'" str))
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213 (concat str ".elc")
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214 str))
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215
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216 (defun packages-list-autoloads-path ()
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217 "List autoloads from precomputed load-path."
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218 (let ((path load-path)
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219 autoloads)
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220 (while path
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221 (if (file-exists-p (concat (car path)
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222 autoload-file-name))
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223 (setq autoloads (cons (concat (car path)
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224 autoload-file-name)
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225 autoloads)))
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226 (setq path (cdr path)))
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227 autoloads))
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228
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229 (defun packages-list-autoloads (source-directory)
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230 "List autoload files in (what will be) the normal lisp search path.
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231 This function is used during build to find where the global symbol files so
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232 they can be perused for their useful information."
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233 (let ((files (directory-files (file-name-as-directory source-directory)
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234 t ".*"))
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235 file autolist)
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236 ;; (print (prin1-to-string source-directory))
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237 ;; (print (prin1-to-string files))
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238 (while (setq file (car-safe files))
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239 (if (and (file-directory-p file)
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240 (file-exists-p (concat (file-name-as-directory file)
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241 autoload-file-name)))
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242 (setq autolist (cons (concat (file-name-as-directory file)
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243 autoload-file-name)
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244 autolist)))
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245 (setq files (cdr files)))
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246 autolist))
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247
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248 ;; The following function cannot be called from a bare temacs
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249 (defun packages-new-autoloads ()
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250 "Return autoloads files that have been added or modified since XEmacs dump."
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251 (require 'loadhist)
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252 (let ((me (concat invocation-directory invocation-name))
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253 (path load-path)
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254 result dir)
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255 (while path
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256 (setq dir (file-truename (car path)))
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257 (let ((autoload-file (file-name-sans-extension (concat
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258 dir
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259 autoload-file-name))))
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260 ;; Check for:
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261 ;; 1. An auto-autoload file that hasn't provided a feature (because
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262 ;; it has been installed since XEmacs was dumped).
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263 ;; 2. auto-autoload.el being newer than the executable
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264 ;; 3. auto-autoload.elc being newer than the executable (the .el
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265 ;; could be missing or compressed)
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266 (when (or (and (null (file-provides autoload-file))
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267 (or (file-exists-p (concat autoload-file ".elc"))
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268 (file-exists-p (concat autoload-file ".el"))))
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269 (and (file-newer-than-file-p (concat autoload-file ".el") me)
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270 (setq autoload-file (concat autoload-file ".el")))
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271 (and (file-newer-than-file-p (concat autoload-file
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272 ".elc")
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273 me)
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274 (setq autoload-file (concat autoload-file ".elc"))))
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275 (push autoload-file result)))
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276 (setq path (cdr path)))
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277 result))
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278
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279 ;; The following function cannot be called from a bare temacs
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280 (defun packages-reload-autoloads ()
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281 "Reload new or updated auto-autoloads files.
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282 This is an extremely dangerous function to call after the user-init-files
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283 is run. Don't call it or you'll be sorry."
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284 (let ((autoload-list (packages-new-autoloads)))
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285 (while autoload-list
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286 (let* ((autoload-file (car autoload-list))
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287 (feature (car-safe (file-provides autoload-file))))
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288 (when feature
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289 ;; (message "(unload-feature %S)" feature)
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290 (unload-feature feature))
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291 (condition-case nil
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292 (load autoload-file)
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293 (t nil)))
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294 (setq autoload-list (cdr autoload-list)))))
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295
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296 ;; Data-directory is really a list now. Provide something to search it for
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297 ;; directories.
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298
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299 (defun locate-data-directory-list (name &optional dir-list)
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300 "Locate the matching list of directories in a search path DIR-LIST.
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301 If no DIR-LIST is supplied, it defaults to `data-directory-list'."
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302 (unless dir-list
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303 (setq dir-list data-directory-list))
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304 (let (found found-dir found-dir-list)
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305 (while dir-list
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306 (setq found (file-name-as-directory (concat (car dir-list) name))
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307 found-dir (file-directory-p found))
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308 (and found-dir
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309 (setq found-dir-list (cons found found-dir-list)))
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310 (setq dir-list (cdr dir-list)))
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311 (nreverse found-dir-list)))
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312
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313 ;; Data-directory is really a list now. Provide something to search it for
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314 ;; a directory.
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315
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316 (defun locate-data-directory (name &optional dir-list)
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317 "Locate a directory in a search path DIR-LIST (a list of directories).
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318 If no DIR-LIST is supplied, it defaults to `data-directory-list'."
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319 (unless dir-list
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320 (setq dir-list data-directory-list))
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321 (let (found found-dir)
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322 (while (and (null found-dir) dir-list)
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323 (setq found (file-name-as-directory (concat (car dir-list) name))
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324 found-dir (file-directory-p found))
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325 (or found-dir
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326 (setq found nil))
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327 (setq dir-list (cdr dir-list)))
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328 found))
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329
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330 ;; Data-directory is really a list now. Provide something to search it for
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331 ;; files.
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332
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333 (defun locate-data-file (name &optional dir-list)
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334 "Locate a file in a search path DIR-LIST (a list of directories).
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335 If no DIR-LIST is supplied, it defaults to `data-directory-list'.
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336 This function is basically a wrapper over `locate-file'."
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633
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337 (locate-file name (or dir-list data-directory-list)))
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428
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338
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339 ;; Path setup
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340
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2456
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341 (defun packages-find-package-hierarchies-named (package-directories base)
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342 "Find a set of package hierarchies within an XEmacs installation.
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343 PACKAGE-DIRECTORIES is a list of package directories.
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344 BASE is a subdirectory name for the hierarchy.
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345 Returns list of hierarchies."
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346 (paths-directories-which-exist
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347 (mapcar #'(lambda (package-directory)
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3179
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348 (file-name-as-directory
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349 (concat (file-name-as-directory package-directory)
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350 base)))
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2456
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351 package-directories)))
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428
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352
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353 (defun packages-split-path (path)
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354 "Split PATH at \"\", return pair with two components.
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355 The second component is shared with PATH."
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356 (let ((reverse-tail '())
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357 (rest path))
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358 (while (and rest (null (string-equal "" (car rest))))
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359 (setq reverse-tail (cons (car rest) reverse-tail))
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360 (setq rest (cdr rest)))
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361 (if (null rest)
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362 (cons path nil)
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363 (cons (nreverse reverse-tail) (cdr rest)))))
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364
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365 (defun packages-split-package-path (package-path)
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366 "Split up PACKAGE-PATH into early, late and last components.
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367 The separation is by \"\" components.
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2456
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368 This returns
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369 (LIST EARLY-PACKAGE-HIERARCHIES LATE-PACKAGE-HIERARCHIES LAST-PACKAGE-HIERARCHIES)."
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428
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370 ;; When in doubt, it's late
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371 (let* ((stuff (packages-split-path package-path))
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372 (early (and (cdr stuff) (car stuff)))
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373 (late+last (or (cdr stuff) (car stuff)))
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374 (stuff (packages-split-path late+last))
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375 (late (car stuff))
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376 (last (cdr stuff)))
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2456
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377 (list (mapcar #'file-name-as-directory early)
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378 (mapcar #'file-name-as-directory late)
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379 (mapcar #'file-name-as-directory last))))
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428
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380
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381 (defun packages-deconstruct (list consumer)
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2456
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382 "Deconstruct LIST and feed it to CONSUMER.
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383 CONSUMER is a function that accepts the elements of LISTS as separate arguments."
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428
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384 (apply consumer list))
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385
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2456
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386 (defun packages-find-installation-package-directories (roots)
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387 "Find the package directories in the XEmacs installation.
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388 ROOTS is a list of installation roots."
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4108
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389 (paths-uniq-append (paths-find-version-directories roots (list "") nil nil nil t)
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390 (paths-find-site-directories roots (list "") nil)))
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428
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391
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3179
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392 (defun packages-find-package-hierarchies (package-directories &optional envvar default)
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2456
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393 "Find package hierarchies in a list of package directories.
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394 PACKAGE-DIRECTORIES is a list of package directories.
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3179
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395 DEFAULT is a default list of package hierarchies.
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396 ENVVAR is the name of an environment variable that may override
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397 the default."
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398 (let* ((envvar-value (and envvar (getenv envvar)))
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399 (package-directories
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400 (if envvar-value
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401 (split-path envvar-value)
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402 package-directories)))
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403
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404 (or (and (not envvar-value) default)
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405 (let ((package-hierarchies '())
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406 (hierarchy-directories (packages-package-hierarchy-directory-names)))
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407 (while hierarchy-directories
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408 (setq package-hierarchies
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409 (nconc package-hierarchies
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410 (packages-find-package-hierarchies-named
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411 package-directories
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412 (car hierarchy-directories))))
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413 (setq hierarchy-directories (cdr hierarchy-directories)))
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414 package-hierarchies))))
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2456
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415
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416 (defun packages-find-all-package-hierarchies (roots)
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3179
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417 "Find the package hierarchies.
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2456
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418 ROOTS is a list of installation roots.
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419 Returns a list of three directory lists, the first being the list of early
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420 hierarchies, the second that of the late hierarchies, and the third the
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421 list of the last hierarchies."
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3179
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422 ;; EMACSPACKAGEPATH is a historical kludge
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428
|
423 (let ((envvar-value (getenv "EMACSPACKAGEPATH")))
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3179
|
424 (cond
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|
|
425 (envvar-value
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3184
|
426 (packages-deconstruct
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427 (packages-split-package-path (paths-decode-directory-path envvar-value))
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428 ;; we get package *directories*
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429 #'(lambda (early late last)
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|
430 (list
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431 (packages-find-package-hierarchies early
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432 "EMACSEARLYPACKAGES")
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433 (packages-find-package-hierarchies late
|
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434 "EMACSLATEPACKAGES")
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435 (packages-find-package-hierarchies last
|
|
|
436 "EMACSLATEPACKAGES")))))
|
|
|
437 ;; --with-package-path is also a historical kludge
|
|
3179
|
438 (configure-package-path
|
|
428
|
439 (packages-deconstruct
|
|
|
440 (packages-split-package-path configure-package-path)
|
|
3184
|
441 ;; we get package *hierarchies*
|
|
3179
|
442 #'(lambda (early late last)
|
|
2456
|
443 (list
|
|
|
444 (packages-find-package-hierarchies (list user-init-directory)
|
|
3179
|
445 "EMACSEARLYPACKAGES"
|
|
|
446 early)
|
|
2456
|
447 (packages-find-package-hierarchies (packages-find-installation-package-directories roots)
|
|
3179
|
448 "EMACSLATEPACKAGES"
|
|
|
449
|
|
|
450 late)
|
|
2456
|
451 (packages-find-package-hierarchies '()
|
|
3179
|
452 "EMACSLASTPACKAGES"
|
|
|
453 last)))))
|
|
|
454 (t
|
|
|
455 (list
|
|
|
456 (packages-find-package-hierarchies (or configure-early-package-directories
|
|
|
457 (list user-init-directory))
|
|
|
458 "EMACSEARLYPACKAGES")
|
|
|
459 (packages-find-package-hierarchies (or configure-late-package-directories
|
|
|
460 (packages-find-installation-package-directories roots))
|
|
|
461 "EMACSLATEPACKAGES")
|
|
|
462 (packages-find-package-hierarchies configure-last-package-directories
|
|
|
463 "EMACSLASTPACKAGES"))))))
|
|
|
464
|
|
2456
|
465 (defun packages-find-package-library-path (package-hierarchies suffixes)
|
|
428
|
466 "Construct a path into a component of the packages hierarchy.
|
|
2456
|
467 PACKAGE-HIERARCHIES is a list of package hierarchies.
|
|
|
468 SUFFIXES is a list of names of hierarchy subdirectories to look for."
|
|
428
|
469 (let ((directories
|
|
|
470 (apply
|
|
|
471 #'nconc
|
|
2456
|
472 (mapcar #'(lambda (hierarchy)
|
|
428
|
473 (mapcar #'(lambda (suffix)
|
|
2456
|
474 (file-name-as-directory (concat hierarchy suffix)))
|
|
428
|
475 suffixes))
|
|
2456
|
476 package-hierarchies))))
|
|
428
|
477 (paths-directories-which-exist directories)))
|
|
|
478
|
|
2456
|
479 (defun packages-find-package-load-path (package-hierarchies)
|
|
428
|
480 "Construct the load-path component for packages.
|
|
2456
|
481 PACKAGE-HIERARCHIES is a list of package hierarchies."
|
|
428
|
482 (paths-find-recursive-load-path
|
|
2456
|
483 (packages-find-package-library-path package-hierarchies
|
|
428
|
484 '("lisp"))
|
|
|
485 packages-load-path-depth))
|
|
|
486
|
|
2456
|
487 (defun packages-find-package-exec-path (package-hierarchies)
|
|
428
|
488 "Construct the exec-path component for packages.
|
|
2456
|
489 PACKAGE-HIERARCHIES is a list of package hierarchies."
|
|
|
490 (packages-find-package-library-path package-hierarchies
|
|
428
|
491 (list (paths-construct-path
|
|
|
492 (list "bin" system-configuration))
|
|
|
493 "lib-src")))
|
|
|
494
|
|
2456
|
495 (defun packages-find-package-info-path (package-hierarchies)
|
|
428
|
496 "Construct the info-path component for packages.
|
|
2456
|
497 PACKAGE-HIERARCHIES is a list of package directories."
|
|
|
498 (packages-find-package-library-path package-hierarchies '("info")))
|
|
428
|
499
|
|
2456
|
500 (defun packages-find-package-data-path (package-hierarchies)
|
|
428
|
501 "Construct the data-path component for packages.
|
|
2456
|
502 PACKAGE-HIERARCHIES is a list of package hierachies."
|
|
428
|
503 (paths-find-recursive-load-path
|
|
2456
|
504 (packages-find-package-library-path package-hierarchies
|
|
428
|
505 '("etc"))
|
|
|
506 packages-data-path-depth))
|
|
|
507
|
|
|
508 ;; Loading package initialization files
|
|
|
509
|
|
|
510 (defun packages-load-package-lisps (package-load-path base)
|
|
|
511 "Load all Lisp files of a certain name along a load path.
|
|
|
512 BASE is the base name of the files."
|
|
|
513 (mapcar #'(lambda (dir)
|
|
793
|
514 (let ((file-name (expand-file-name base dir)))
|
|
|
515 (with-trapping-errors
|
|
|
516 :operation (format "Autoload %s" file-name)
|
|
|
517 :class 'packages
|
|
|
518 (load file-name t t))))
|
|
|
519 package-load-path))
|
|
428
|
520
|
|
|
521 (defun packages-load-package-auto-autoloads (package-load-path)
|
|
|
522 "Load auto-autoload files along a load path."
|
|
|
523 (packages-load-package-lisps package-load-path
|
|
|
524 (file-name-sans-extension autoload-file-name)))
|
|
|
525
|
|
|
526 (defun packages-handle-package-dumped-lisps (handle package-load-path)
|
|
|
527 "Load dumped-lisp.el files along a load path.
|
|
|
528 Call HANDLE on each file off definitions of PACKAGE-LISP there."
|
|
|
529 (mapcar #'(lambda (dir)
|
|
|
530 (let ((file-name (expand-file-name "dumped-lisp.el" dir)))
|
|
|
531 (if (file-exists-p file-name)
|
|
|
532 (let (package-lisp
|
|
|
533 ;; 20.4 packages could set this
|
|
|
534 preloaded-file-list)
|
|
|
535 (load file-name)
|
|
|
536 ;; dumped-lisp.el could have set this ...
|
|
|
537 (if package-lisp
|
|
|
538 (mapcar #'(lambda (base)
|
|
|
539 (funcall handle base))
|
|
|
540 package-lisp))))))
|
|
|
541 package-load-path))
|
|
|
542
|
|
|
543 (defun packages-load-package-dumped-lisps (package-load-path)
|
|
|
544 "Load dumped-lisp.el files along a load path.
|
|
444
|
545 Also load files off PACKAGE-LISP definitions there."
|
|
428
|
546 (packages-handle-package-dumped-lisps #'load package-load-path))
|
|
|
547
|
|
|
548 (defun packages-collect-package-dumped-lisps (package-load-path)
|
|
|
549 "Load dumped-lisp.el files along a load path.
|
|
444
|
550 Return list of files off PACKAGE-LISP definitions there."
|
|
428
|
551 (let ((*files* '()))
|
|
|
552 (packages-handle-package-dumped-lisps
|
|
|
553 #'(lambda (file)
|
|
|
554 (setq *files* (cons file *files*)))
|
|
|
555 package-load-path)
|
|
|
556 (reverse *files*)))
|
|
|
557
|
|
|
558 (provide 'packages)
|
|
|
559
|
|
|
560 ;;; packages.el ends here
|
