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1 ;;; package-get.el --- Retrieve XEmacs package
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2
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3 ;; Copyright (C) 1998 by Pete Ware
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4
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5 ;; Author: Pete Ware <ware@cis.ohio-state.edu>
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6 ;; Keywords: internal
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7
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8 ;; This file is part of XEmacs.
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9
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10 ;; XEmacs is free software; you can redistribute it and/or modify it
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11 ;; under the terms of the GNU General Public License as published by
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12 ;; the Free Software Foundation; either version 2, or (at your option)
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13 ;; any later version.
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14
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15 ;; XEmacs is distributed in the hope that it will be useful, but
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16 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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18 ;; General Public License for more details.
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19
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20 ;; You should have received a copy of the GNU General Public License
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21 ;; along with XEmacs; see the file COPYING. If not, write to the Free
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22 ;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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23 ;; 02111-1307, USA.
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24
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25 ;;; Synched up with: Not in FSF
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26
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27 ;;; Commentary:
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28
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29 ;; package-get -
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30 ;; Retrieve a package and any other required packages from an archive
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31 ;;
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32 ;; The idea:
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33 ;; A new XEmacs lisp-only release is generated with the following steps:
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34 ;; 1. The maintainer runs some yet to be written program that
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35 ;; generates all the dependency information. This should
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36 ;; determine all the require and provide statements and associate
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37 ;; them with a package.
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38 ;; 2. All the packages are then bundled into their own tar balls
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39 ;; (or whatever format)
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40 ;; 3. Maintainer automatically generates a new `package-get-base'
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41 ;; data structure which contains information such as the
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42 ;; package name, the file to be retrieved, an md5 checksum,
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43 ;; etc (see `package-get-base').
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44 ;; 4. The maintainer posts an announcement with the new version
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45 ;; of `package-get-base'.
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46 ;; 5. A user/system manager saves this posting and runs
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47 ;; `package-get-update' which uses the previously saved list
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48 ;; of packages, `package-get-here' that the user/site
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49 ;; wants to determine what new versions to download and
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50 ;; install.
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51 ;;
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52 ;; A user/site manager can generate a new `package-get-here' structure
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53 ;; by using `package-get-setup' which generates a customize like
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54 ;; interface to the list of packages. The buffer looks something
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55 ;; like:
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56 ;;
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57 ;; gnus - a mail and news reader
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58 ;; [] Always install
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59 ;; [] Needs updating
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60 ;; [] Required by other [packages]
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61 ;; version: 2.0
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62 ;;
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63 ;; vm - a mail reader
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64 ;; [] Always install
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65 ;; [] Needs updating
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66 ;; [] Required by other [packages]
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67 ;;
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68 ;; Where `[]' indicates a toggle box
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69 ;;
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70 ;; - Clicking on "Always install" puts this into
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71 ;; `package-get-here' list. "Needs updating" indicates a new
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72 ;; version is available. Anything already in
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73 ;; `package-get-here' has this enabled.
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74 ;; - "Required by other" means some other packages are going to force
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75 ;; this to be installed. Clicking on [packages] gives a list
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76 ;; of packages that require this.
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77 ;;
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78 ;; The `package-get-base' should be installed in a file in
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79 ;; `data-directory'. The `package-get-here' should be installed in
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80 ;; site-lisp. Both are then read at run time.
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81 ;;
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82 ;; TODO:
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83 ;; - Implement `package-get-setup'
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84 ;; - Actually put `package-get-base' and `package-get-here' into
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85 ;; files that are read.
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86 ;; - Allow users to have their own packages that they want installed
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87 ;; in ~/.xemacs/.
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88 ;; - SOMEONE needs to write the programs that generate the
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89 ;; provides/requires database and makes it into a lisp data
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90 ;; structure suitable for `package-get-base'
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91 ;; - Handle errors such as no package providing a required symbol.
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92 ;; - Tie this into the `require' function to download packages
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93 ;; transparently.
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94
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95 ;;; Change Log
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96
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97 ;;; Code:
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98
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99 (require 'package-admin)
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298
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100 (require 'package-get-base)
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235
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101
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102 (defvar package-get-base nil
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103 "List of packages that are installed at this site.
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104 For each element in the alist, car is the package name and the cdr is
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105 a plist containing information about the package. Typical fields
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106 kept in the plist are:
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107
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108 version - version of this package
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109 provides - list of symbols provided
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110 requires - list of symbols that are required.
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111 These in turn are provided by other packages.
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112 filename - name of the file.
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113 size - size of the file (aka the bundled package)
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114 md5sum - computed md5 checksum
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115 description - What this package is for.
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116 type - Whether this is a 'binary (default) or 'single file package
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117
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118 More fields may be added as needed. An example:
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119
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120 '(
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121 (name
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122 (version \"<version 2>\"
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123 file \"filename\"
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124 description \"what this package is about.\"
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125 provides (<list>)
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126 requires (<list>)
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127 size <integer-bytes>
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128 md5sum \"<checksum\"
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129 type single
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130 )
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131 (version \"<version 1>\"
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132 file \"filename\"
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133 description \"what this package is about.\"
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134 provides (<list>)
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135 requires (<list>)
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136 size <integer-bytes>
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137 md5sum \"<checksum\"
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138 type single
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139 )
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140 ...
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141 ))
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142
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143 For version information, it is assumed things are listed in most
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144 recent to least recent -- in other words, the version names don't have to
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145 be lexically ordered. It is debatable if it makes sense to have more than
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146 one version of a package available.")
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147
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263
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148 (defvar package-get-dir (temp-directory)
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235
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149 "*Where to store temporary files for staging.")
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150
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151 (defvar package-get-remote
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152 '(
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276
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153 ("ftp.xemacs.org" "/pub/xemacs/beta/xemacs-21.0/packages/binary-packages")
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154 ("ftp.xemacs.org" "/pub/xemacs/beta/xemacs-21.0/packages/single-file-packages")
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235
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155 ("ftp.xemacs.org" "/pub/xemacs/package"))
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156 "*List of remote sites to contact for downloading packages.
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157 List format is '(site-name directory-on-site). Each site is tried in
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158 order until the package is found.")
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159
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160 (defvar package-get-remove-copy nil
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161 "*After copying and installing a package, if this is T, then remove the
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162 copy. Otherwise, keep it around.")
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163
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292
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164 ;;;###autoload
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263
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165 (defun package-get-update-all ()
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166 "Fetch and install the latest versions of all currently installed packages."
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167 (interactive)
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168 ;; Load a fresh copy
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169 (mapcar (lambda (pkg)
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286
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170 (package-get-all
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171 (car pkg) nil))
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263
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172 packages-package-list))
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173
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292
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174 ;;;###autoload
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235
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175 (defun package-get-all (package version &optional fetched-packages)
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176 "Fetch PACKAGE with VERSION and all other required packages.
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177 Uses `package-get-base' to determine just what is required and what
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178 package provides that functionality. If VERSION is nil, retrieves
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179 latest version. Optional argument FETCHED-PACKAGES is used to keep
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180 track of packages already fetched."
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278
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181 (interactive "sPackage: \nsVersion: ")
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237
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182 (let* ((the-package (package-get-info-find-package package-get-base
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183 package))
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184 (this-package (package-get-info-version
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185 the-package version))
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235
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186 (this-requires (package-get-info-prop this-package 'requires))
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187 )
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237
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188 (setq version (package-get-info-prop this-package 'version))
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235
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189 (unless (package-get-installedp package version)
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190 (package-get package version))
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191 (setq fetched-packages
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237
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192 (append (list package)
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193 (package-get-info-prop this-package 'provides)
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235
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194 fetched-packages))
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195 ;; grab everything that this package requires plus recursively
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196 ;; grab everything that the requires require. Keep track
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197 ;; in `fetched-packages' the list of things provided -- this
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198 ;; keeps us from going into a loop
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199 (while this-requires
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200 (if (not (member (car this-requires) fetched-packages))
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201 (let* ((reqd-package (package-get-package-provider
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202 (car this-requires)))
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203 (reqd-version (cadr reqd-package))
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204 (reqd-name (car reqd-package)))
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237
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205 (if (null reqd-name)
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206 (error "Unable to find a provider for %s" (car this-requires)))
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235
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207 (setq fetched-packages
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208 (package-get-all reqd-name reqd-version fetched-packages)))
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209 )
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210 (setq this-requires (cdr this-requires)))
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294
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211 fetched-packages
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212 ))
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235
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213
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292
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214 ;;;###autoload
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235
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215 (defun package-get (package &optional version conflict)
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216 "Fetch PACKAGE from remote site.
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217 Optional arguments VERSION indicates which version to retrieve, nil
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218 means most recent version. CONFLICT indicates what happens if the
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219 package is already installed. Valid values for CONFLICT are:
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220 'always always retrieve the package even if it is already installed
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221 'never do not retrieve the package if it is installed.
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222
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223 The value of `package-get-base' is used to determine what files should
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224 be retrieved. The value of `package-get-remote' is used to determine
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225 where a package should be retrieved from. The sites are tried in
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226 order so one is better off listing easily reached sites first.
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227
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228 Once the package is retrieved, its md5 checksum is computed. If that
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229 sum does not match that stored in `package-get-base' for this version
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230 of the package, an error is signalled."
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231 (interactive "xPackage List: ")
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232 (let* ((this-package
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233 (package-get-info-version
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234 (package-get-info-find-package package-get-base
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235 package) version))
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236 (found nil)
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237 (search-dirs package-get-remote)
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238 (filename (package-get-info-prop this-package 'filename)))
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239 (if (null this-package)
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240 (error "Couldn't find package %s with version %s"
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241 package version))
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242 (if (null filename)
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243 (error "No filename associated with package %s, version %s"
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244 package version))
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237
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245 (setq version (package-get-info-prop this-package 'version))
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235
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246 (unless (and (eq conflict 'never)
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247 (package-get-installedp package version))
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248 ;; Find the package from search list in package-get-remote
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249 ;; and copy it into the staging directory. Then validate
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250 ;; the checksum. Finally, install the package.
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251 (while (and search-dirs
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252 (not (file-exists-p (package-get-staging-dir filename))))
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253 (if (file-exists-p (package-get-remote-filename
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254 (car search-dirs) filename))
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294
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255 (copy-file (package-get-remote-filename (car search-dirs) filename)
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256 (package-get-staging-dir filename))
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235
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257 (setq search-dirs (cdr search-dirs))
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258 ))
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259 (if (not (file-exists-p (package-get-staging-dir filename)))
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260 (error "Unable to find file %s" filename))
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261 ;; Validate the md5 checksum
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284
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262 ;; Doing it with XEmacs removes the need for an external md5 program
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235
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263 (with-temp-buffer
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294
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264 ;; What ever happened to i-f-c-literally
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284
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265 (let (file-name-handler-alist)
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266 (insert-file-contents-internal (package-get-staging-dir filename)))
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267 (if (not (string= (md5 (current-buffer))
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268 (package-get-info-prop this-package
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269 'md5sum)))
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235
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270 (error "Package %s does not match md5 checksum" filename)))
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237
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271 (message "Retrieved package %s" filename) (sit-for 0)
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235
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272 (let ((status
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288
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273 (package-admin-add-binary-package
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274 (package-get-staging-dir filename))))
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235
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275 (when (not (= status 0))
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276 (message "Package failed.")
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237
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277 (switch-to-buffer package-admin-temp-buffer)))
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278 (sit-for 0)
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279 (message "Added package") (sit-for 0)
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235
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280 (setq found t))
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281 (if (and found package-get-remove-copy)
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282 (delete-file (package-get-staging-dir filename)))
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283 ))
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284
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285 (defun package-get-info-find-package (which name)
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294
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286 "Look in WHICH for the package called NAME and return all the info
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287 associated with it. See `package-get-base' for info on the format
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288 returned.
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235
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289
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290 To access fields returned from this, use
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291 `package-get-info-version' to return information about particular a
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292 version. Use `package-get-info-find-prop' to find particular property
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293 from a version returned by `package-get-info-version'."
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294
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294 (interactive "xPackage list: \nsPackage Name: ")
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235
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295 (if which
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296 (if (eq (caar which) name)
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297 (cdar which)
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298 (if (cdr which)
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299 (package-get-info-find-package (cdr which) name)))))
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300
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301 (defun package-get-info-version (package version)
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302 "In PACKAGE, return the plist associated with a particular VERSION of the
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303 package. PACKAGE is typically as returned by
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304 `package-get-info-find-package'. If VERSION is nil, then return the
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305 first (aka most recent) version. Use `package-get-info-find-prop'
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306 to retrieve a particular property from the value returned by this."
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307 (interactive "xPackage Info: \nsVersion: ")
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308 (while (and version package (not (string= (plist-get (car package) 'version) version)))
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309 (setq package (cdr package)))
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310 (if package (car package)))
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311
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312 (defun package-get-info-prop (package-version property)
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313 "In PACKAGE-VERSION, return the value associated with PROPERTY.
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314 PACKAGE-VERSION is typically returned by `package-get-info-version'
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315 and PROPERTY is typically (although not limited to) one of the
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316 following:
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317
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318 version - version of this package
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319 provides - list of symbols provided
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320 requires - list of symbols that are required.
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321 These in turn are provided by other packages.
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322 size - size of the bundled package
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323 md5sum - computed md5 checksum"
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324 (interactive "xPackage Version: \nSProperty")
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325 (plist-get package-version property))
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326
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327 (defun package-get-info-version-prop (package-list package version property)
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328 "In PACKAGE-LIST, search for PACKAGE with this VERSION and return
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329 PROPERTY value."
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330 (package-get-info-prop
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331 (package-get-info-version
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332 (package-get-info-find-package package-list package) version) property))
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333
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334 (defun package-get-set-version-prop (package-list package version
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335 property value)
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336 "A utility to make it easier to add a VALUE for a specific PROPERTY
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337 in this VERSION of a specific PACKAGE kept in the PACKAGE-LIST.
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338 Returns the modified PACKAGE-LIST. Any missing fields are created."
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339 )
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340
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341 (defun package-get-staging-dir (filename)
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342 "Return a good place to stash FILENAME when it is retrieved.
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343 Use `package-get-dir' for directory to store stuff.
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344 Creates `package-get-dir' it it doesn't exist."
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345 (interactive "FPackage filename: ")
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346 (if (not (file-exists-p package-get-dir))
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347 (make-directory package-get-dir))
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348 (concat
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349 (file-name-as-directory package-get-dir)
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350 (file-name-nondirectory (or (nth 2 (efs-ftp-path filename)) filename))))
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351
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352
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353 (defun package-get-remote-filename (search filename)
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354 "Return FILENAME as a remote filename.
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355 It first checks if FILENAME already is a remote filename. If it is
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356 not, then it uses the (car search) as the remote site-name and the (cadr
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357 search) as the remote-directory and concatenates filename. In other
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358 words
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359 site-name:remote-directory/filename
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360 "
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361 (if (efs-ftp-path filename)
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362 filename
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298
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363 (let ((dir (cadr search)))
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364 (concat "/"
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365 (car search) ":"
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366 (if (string-match "/$" dir)
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367 dir
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368 (concat dir "/"))
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369 filename))))
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235
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370
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371
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372 (defun package-get-installedp (package version)
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373 "Determine if PACKAGE with VERSION has already been installed.
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374 I'm not sure if I want to do this by searching directories or checking
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263
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375 some built in variables. For now, use packages-package-list."
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376 ;; Use packages-package-list which contains name and version
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294
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377 (equal (plist-get
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378 (package-get-info-find-package packages-package-list
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379 package) ':version)
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380 (if (floatp version) version (string-to-number version))))
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235
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381
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294
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382 ;;;###autoload
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235
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383 (defun package-get-package-provider (sym)
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384 "Search for a package that provides SYM and return the name and
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385 version. Searches in `package-get-base' for SYM. If SYM is a
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386 consp, then it must match a corresponding (provide (SYM VERSION)) from
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387 the package."
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388 (interactive "SSymbol: ")
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389 (let ((packages package-get-base)
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390 (done nil)
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391 (found nil))
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392 (while (and (not done) packages)
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237
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393 (let* ((this-name (caar packages))
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394 (this-package (cdr (car packages)))) ;strip off package name
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235
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395 (while (and (not done) this-package)
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237
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396 (if (or (eq this-name sym)
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397 (eq (cons this-name
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398 (package-get-info-prop (car this-package) 'version))
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399 sym)
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400 (member sym (package-get-info-prop (car this-package) 'provides)))
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235
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401 (progn (setq done t)
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402 (setq found (list (caar packages)
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403 (package-get-info-prop (car this-package) 'version))))
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404 (setq this-package (cdr this-package)))))
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405 (setq packages (cdr packages)))
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406 found))
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407
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286
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408 ;;
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409 ;; customize interfaces.
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410 ;; The group is in this file so that custom loads includes this file.
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411 ;;
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412 (defgroup packages nil
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413 "Configure XEmacs packages."
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414 :group 'emacs)
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415
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292
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416 ;;;###autoload
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286
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417 (defun package-get-custom ()
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418 "Fetch and install the latest versions of all customized packages."
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419 (interactive)
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420 ;; Load a fresh copy
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421 (load "package-get-custom.el")
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422 (mapcar (lambda (pkg)
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423 (if (eval (intern (concat (symbol-name (car pkg)) "-package")))
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424 (package-get-all (car pkg) nil))
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425 t)
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426 package-get-base))
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427
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288
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428 (defun package-get-ever-installed-p (pkg &optional notused)
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286
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429 (string-match "-package$" (symbol-name pkg))
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430 (custom-initialize-set
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431 pkg
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432 (if (package-get-info-find-package
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433 packages-package-list
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434 (intern (substring (symbol-name pkg) 0 (match-beginning 0))))
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435 t)))
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436
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288
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437 (defun package-get-file-installed-p (file &optional paths)
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438 "Return absolute-path of FILE if FILE exists in PATHS.
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439 If PATHS is omitted, `load-path' is used."
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440 (if (null paths)
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441 (setq paths load-path)
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442 )
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443 (catch 'tag
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444 (let (path)
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445 (while paths
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446 (setq path (expand-file-name file (car paths)))
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447 (if (file-exists-p path)
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448 (throw 'tag path)
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449 )
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450 (setq paths (cdr paths))
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451 ))))
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452
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286
|
453 (defun package-get-create-custom ()
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454 "Creates a package customization file package-get-custom.el.
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455 Entries in the customization file are retrieved from package-get-base.el."
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456 (interactive)
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457 ;; Load a fresh copy
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458 (let ((custom-buffer (find-file-noselect
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288
|
459 (or (package-get-file-installed-p
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460 "package-get-custom.el")
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286
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461 (concat (file-name-directory
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288
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462 (package-get-file-installed-p
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463 "package-get-base.el"))
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286
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464 "package-get-custom.el"))))
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465 (pkg-groups nil))
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466
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467 ;; clear existing stuff
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468 (delete-region (point-min custom-buffer)
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469 (point-max custom-buffer) custom-buffer)
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470 (insert-string "(require 'package-get)\n" custom-buffer)
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471
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472 (mapcar (lambda (pkg)
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473 (let ((category (plist-get (car (cdr pkg)) 'category)))
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474 (or (memq (intern category) pkg-groups)
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475 (progn
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476 (setq pkg-groups (cons (intern category) pkg-groups))
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|
|
477 (insert-string
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|
|
478 (concat "(defgroup " category "-packages nil\n"
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|
|
479 " \"" category " package group\"\n"
|
|
|
480 " :group 'packages)\n\n") custom-buffer)))
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481
|
|
|
482 (insert-string
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|
|
483 (concat "(defcustom " (symbol-name (car pkg))
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|
|
484 "-package nil \n"
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|
|
485 " \"" (plist-get (car (cdr pkg)) 'description) "\"\n"
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|
|
486 " :group '" category "-packages\n"
|
|
288
|
487 " :initialize 'package-get-ever-installed-p\n"
|
|
286
|
488 " :type 'boolean)\n\n") custom-buffer)))
|
|
294
|
489 package-get-base) custom-buffer)
|
|
286
|
490 )
|
|
|
491
|
|
|
492 ;; need this first to avoid infinite dependency loops
|
|
|
493 (provide 'package-get)
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|
|
494
|
|
|
495 ;; potentially update the custom dependencies every time we load this
|
|
288
|
496 (let ((custom-file (package-get-file-installed-p "package-get-custom.el"))
|
|
|
497 (package-file (package-get-file-installed-p "package-get-base.el")))
|
|
286
|
498 ;; update custom file if it doesn't exist
|
|
|
499 (if (or (not custom-file)
|
|
|
500 (and (< (car (nth 5 (file-attributes custom-file)))
|
|
|
501 (car (nth 5 (file-attributes package-file))))
|
|
|
502 (< (car (nth 5 (file-attributes custom-file)))
|
|
|
503 (car (nth 5 (file-attributes package-file))))))
|
|
|
504 (save-excursion
|
|
|
505 (message "generating package customizations...")
|
|
|
506 (set-buffer (package-get-create-custom))
|
|
|
507 (save-buffer)
|
|
|
508 (message "generating package customizations...done")))
|
|
|
509 (load "package-get-custom.el"))
|
|
|
510
|
|
235
|
511 ;;; package-get.el ends here
|
