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1 ;;; url-file.el --- File retrieval code
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2 ;; Author: wmperry
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3 ;; Created: 1997/06/24 22:38:39
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4 ;; Version: 1.21
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5 ;; Keywords: comm, data, processes
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6
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7 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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8 ;;; Copyright (c) 1993-1996 by William M. Perry (wmperry@cs.indiana.edu)
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9 ;;; Copyright (c) 1996, 1997 Free Software Foundation, Inc.
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10 ;;;
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11 ;;; This file is not part of GNU Emacs, but the same permissions apply.
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12 ;;;
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13 ;;; GNU Emacs is free software; you can redistribute it and/or modify
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14 ;;; it under the terms of the GNU General Public License as published by
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15 ;;; the Free Software Foundation; either version 2, or (at your option)
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16 ;;; any later version.
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17 ;;;
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18 ;;; GNU Emacs is distributed in the hope that it will be useful,
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19 ;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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20 ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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21 ;;; GNU General Public License for more details.
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22 ;;;
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23 ;;; You should have received a copy of the GNU General Public License
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24 ;;; along with GNU Emacs; see the file COPYING. If not, write to the
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25 ;;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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26 ;;; Boston, MA 02111-1307, USA.
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27 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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28
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29 (require 'url-vars)
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30 (require 'mule-sysdp)
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31 (require 'url-parse)
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32
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33 (defun url-insert-possibly-compressed-file (fname &rest args)
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34 ;; Insert a file into a buffer, checking for compressed versions.
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35 (let ((compressed nil)
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36 ;;
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37 ;; F*** *U** **C* ***K!!!
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38 ;; We cannot just use insert-file-contents-literally here, because
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39 ;; then we would lose big time with ange-ftp. *sigh*
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40 (crypt-encoding-alist nil)
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41 (jka-compr-compression-info-list nil)
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42 (jam-zcat-filename-list nil)
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43 (file-coding-system-for-read mule-no-coding-system)
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44 (coding-system-for-read mule-no-coding-system))
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45 (setq compressed
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46 (cond
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98
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47 ((file-exists-p fname)
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48 (if (string-match "\\.\\(z\\|gz\\|Z\\)$" fname)
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49 (case (intern (match-string 1 fname))
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50 ((z gz)
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51 (setq url-current-mime-headers (cons
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52 (cons
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53 "content-transfer-encoding"
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54 "gzip")
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55 url-current-mime-headers)))
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56 (Z
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57 (setq url-current-mime-headers (cons
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58 (cons
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59 "content-transfer-encoding"
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60 "compress")
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61 url-current-mime-headers))))
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62 nil))
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63 ((file-exists-p (concat fname ".Z"))
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98
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64 (setq fname (concat fname ".Z")
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65 url-current-mime-headers (cons (cons
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66 "content-transfer-encoding"
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67 "compress")
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68 url-current-mime-headers)))
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69 ((file-exists-p (concat fname ".gz"))
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98
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70 (setq fname (concat fname ".gz")
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71 url-current-mime-headers (cons (cons
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72 "content-transfer-encoding"
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73 "gzip")
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74 url-current-mime-headers)))
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75 ((file-exists-p (concat fname ".z"))
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98
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76 (setq fname (concat fname ".z")
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77 url-current-mime-headers (cons (cons
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78 "content-transfer-encoding"
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79 "gzip")
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80 url-current-mime-headers)))
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81 (t
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82 (error "File not found %s" fname))))
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98
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83 (apply 'insert-file-contents fname args)
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84 (set-buffer-modified-p nil)))
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85
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86 (defvar url-dired-minor-mode-map
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87 (let ((map (make-sparse-keymap)))
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88 (define-key map "\C-m" 'url-dired-find-file)
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89 (if url-running-xemacs
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90 (define-key map [button2] 'url-dired-find-file-mouse)
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91 (define-key map [mouse-2] 'url-dired-find-file-mouse))
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92 map)
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93 "Keymap used when browsing directories.")
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94
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95 (defvar url-dired-minor-mode nil
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96 "Whether we are in url-dired-minor-mode")
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97
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98 (make-variable-buffer-local 'url-dired-minor-mode)
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99
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100 (defun url-dired-find-file ()
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101 "In dired, visit the file or directory named on this line, using Emacs-W3."
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102 (interactive)
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103 (w3-open-local (dired-get-filename)))
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104
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105 (defun url-dired-find-file-mouse (event)
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106 "In dired, visit the file or directory name you click on, using Emacs-W3."
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107 (interactive "@e")
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108 (if (event-point event)
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109 (progn
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110 (goto-char (event-point event))
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111 (url-dired-find-file))))
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112
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113 (defun url-dired-minor-mode (&optional arg)
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114 "Minor mode for directory browsing with Emacs-W3."
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115 (interactive "P")
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116 (cond
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117 ((null arg)
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118 (setq url-dired-minor-mode (not url-dired-minor-mode)))
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119 ((equal 0 arg)
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120 (setq url-dired-minor-mode nil))
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121 (t
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122 (setq url-dired-minor-mode t))))
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123
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124 (add-minor-mode 'url-dired-minor-mode " URL" url-dired-minor-mode-map)
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125
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126 (defun url-format-directory (dir)
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127 ;; Format the files in DIR into hypertext
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165
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128 (kill-buffer (current-buffer))
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129 (find-file dir)
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130 (url-dired-minor-mode t))
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131
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132 (defun url-host-is-local-p (host)
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133 "Return t iff HOST references our local machine."
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134 (let ((case-fold-search t))
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135 (or
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136 (null host)
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137 (string= "" host)
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138 (equal (downcase host) (downcase (system-name)))
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139 (and (string-match "^localhost$" host) t)
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140 (and (not (string-match (regexp-quote ".") host))
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141 (equal (downcase host) (if (string-match (regexp-quote ".")
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142 (system-name))
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143 (substring (system-name) 0
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144 (match-beginning 0))
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145 (system-name)))))))
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144
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146
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147 (defun url-file-build-continuation (name)
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148 (list 'url-file-asynch-callback
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149 name (current-buffer)
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150 url-current-callback-func url-current-callback-data))
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151
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152 (defun url-file-asynch-callback (x y name buff func args &optional efs)
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153 (if (featurep 'efs)
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154 ;; EFS passes us an extra argument
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155 (setq name buff
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156 buff func
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157 func args
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158 args efs))
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159 (cond
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160 ((not name) nil)
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161 ((not (file-exists-p name)) nil)
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162 (t
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163 (if (not buff)
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164 (setq buff (generate-new-buffer " *url-asynch-file*")))
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165 (set-buffer buff)
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166 (insert-file-contents-literally name)
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167 (condition-case ()
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168 (delete-file name)
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169 (error nil))))
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170 (if func
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171 (apply func args)
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172 (url-sentinel (current-buffer) nil)))
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173
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174 (defun url-file (url)
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175 ;; Find a file
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176 (let* ((urlobj (url-generic-parse-url url))
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177 (user (url-user urlobj))
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178 (pass (url-password urlobj))
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179 (site (url-host urlobj))
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180 (file (url-unhex-string (url-filename urlobj)))
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181 (dest (url-target urlobj))
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182 (filename (if (or user (not (url-host-is-local-p site)))
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183 (concat "/" (or user "anonymous") "@" site ":" file)
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184 file))
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185 (viewer (mm-mime-info
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186 (mm-extension-to-mime (url-file-extension file))))
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187 (pos-index (if url-directory-index-file
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188 (expand-file-name url-directory-index-file filename))))
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189 (url-clear-tmp-buffer)
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86
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190 (and user pass
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191 (cond
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192 ((featurep 'ange-ftp)
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193 (ange-ftp-set-passwd site user pass))
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194 ((or (featurep 'efs) (featurep 'efs-auto))
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195 (efs-set-passwd site user pass))
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196 (t
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197 nil)))
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165
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198 (if (and pos-index
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199 (file-exists-p pos-index)
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200 (file-readable-p pos-index))
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201 (setq filename pos-index))
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202 (setq url-current-mime-type (mm-extension-to-mime
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203 (url-file-extension filename)))
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204 (cond
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205 ((file-directory-p filename)
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144
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206 (if (not (string-match "/$" filename))
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207 (setq filename (concat filename "/")))
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208 (if (not (string-match "/$" file))
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209 (setq file (concat file "/")))
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210 (url-set-filename urlobj file)
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211 (url-format-directory filename))
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144
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212 (url-be-asynchronous
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213 (cond
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214 ((file-exists-p filename) nil)
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215 ((file-exists-p (concat filename ".Z"))
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216 (setq filename (concat filename ".Z")))
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217 ((file-exists-p (concat filename ".gz"))
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218 (setq filename (concat filename ".gz")))
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219 ((file-exists-p (concat filename ".z"))
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220 (setq filename (concat filename ".z")))
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221 (t nil))
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222 (let ((new (mm-generate-unique-filename)))
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223 (cond
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224 ((url-host-is-local-p site)
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225 (insert-file-contents-literally filename)
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226 (if (featurep 'efs)
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227 (url-file-asynch-callback nil nil nil nil nil
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228 url-current-callback-func
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229 url-current-callback-data)
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230 (url-file-asynch-callback nil nil nil nil
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231 url-current-callback-func
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232 url-current-callback-data)))
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233 ((featurep 'ange-ftp)
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234 (ange-ftp-copy-file-internal filename (expand-file-name new) t
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235 nil t
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236 (url-file-build-continuation new)
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237 t))
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238 ((or (featurep 'efs) (featurep 'efs-auto))
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14
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239 (efs-copy-file-internal filename (efs-ftp-path filename)
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240 new (efs-ftp-path new)
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144
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241 t nil 0
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242 (url-file-build-continuation new)
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243 0 nil)))))
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244 (t
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245 (let ((errobj nil))
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246 (if (or url-source ; Need it in a buffer
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247 (and (symbolp viewer)
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248 (not (eq viewer 'w3-default-local-file)))
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249 (stringp viewer))
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250 (condition-case errobj
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251 (url-insert-possibly-compressed-file filename t)
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252 (error
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253 (url-save-error errobj)
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165
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254 (url-retrieve (concat "www://error/nofile/" file))))))))))
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255
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256 (fset 'url-ftp 'url-file)
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257
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258 (provide 'url-file)
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