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1 ;;; url-file.el --- File retrieval code
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2 ;; Author: wmperry
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3 ;; Created: 1996/12/30 14:25:26
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4 ;; Version: 1.7
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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 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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47 ((file-exists-p fname) nil)
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48 ((file-exists-p (concat fname ".Z"))
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49 (setq fname (concat fname ".Z")))
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50 ((file-exists-p (concat fname ".gz"))
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51 (setq fname (concat fname ".gz")))
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52 ((file-exists-p (concat fname ".z"))
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53 (setq fname (concat fname ".z")))
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54 (t
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55 (error "File not found %s" fname))))
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56 (if (or (not compressed) url-inhibit-uncompression)
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57 (apply 'insert-file-contents fname args)
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58 (let* ((extn (url-file-extension fname))
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59 (code (cdr-safe (assoc extn url-uncompressor-alist)))
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60 (decoder (cdr-safe (assoc code mm-content-transfer-encodings))))
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61 (cond
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62 ((null decoder)
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63 (apply 'insert-file-contents fname args))
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64 ((stringp decoder)
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65 (apply 'insert-file-contents fname args)
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66 (message "Decoding...")
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67 (call-process-region (point-min) (point-max) decoder t t nil)
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68 (message "Decoding... done."))
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69 ((listp decoder)
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70 (apply 'call-process-region (point-min) (point-max)
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71 (car decoder) t t t (cdr decoder)))
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72 ((and (symbolp decoder) (fboundp decoder))
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73 (apply 'insert-file-contents fname args)
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74 (message "Decoding...")
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75 (funcall decoder (point-min) (point-max))
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76 (message "Decoding... done."))
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77 (t
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78 (error "Malformed entry for %s in `mm-content-transfer-encodings'"
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79 code))))))
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80 (set-buffer-modified-p nil))
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81
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82 (defun url-format-directory (dir)
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83 ;; Format the files in DIR into hypertext
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84 (let ((files (directory-files dir nil)) file
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85 div attr mod-time size typ title)
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86 (if (and url-directory-index-file
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87 (file-exists-p (expand-file-name url-directory-index-file dir))
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88 (file-readable-p (expand-file-name url-directory-index-file dir)))
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89 (save-excursion
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90 (set-buffer url-working-buffer)
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91 (erase-buffer)
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92 (insert-file-contents-literally
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93 (expand-file-name url-directory-index-file dir)))
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94 (save-excursion
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95 (if (string-match "/\\([^/]+\\)/$" dir)
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96 (setq title (concat ".../" (url-match dir 1) "/"))
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97 (setq title "/"))
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98 (setq div (1- (length files)))
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99 (set-buffer url-working-buffer)
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100 (erase-buffer)
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101 (insert "<html>\n"
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102 " <head>\n"
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103 " <title>" title "</title>\n"
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104 " </head>\n"
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105 " <body>\n"
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106 " <div>\n"
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107 " <h1 align=center> Index of " title "</h1>\n"
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108 " <pre>\n"
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109 " Name Last modified Size\n</pre>"
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110 "<hr>\n <pre>\n")
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111 (while files
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112 (url-lazy-message "Building directory list... (%d%%)"
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113 (/ (* 100 (- div (length files))) div))
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114 (setq file (expand-file-name (car files) dir)
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115 attr (file-attributes file)
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116 file (car files)
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117 mod-time (nth 5 attr)
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118 size (nth 7 attr)
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119 typ (or (mm-extension-to-mime (url-file-extension file)) ""))
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120 (setq file (url-hexify-string file))
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121 (if (equal '(0 0) mod-time) ; Set to null if unknown or
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122 (setq mod-time "Unknown ")
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123 (setq mod-time (current-time-string mod-time)))
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124 (if (or (equal size 0) (equal size -1) (null size))
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125 (setq size " -")
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126 (setq size
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127 (cond
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128 ((< size 1024) (concat " " "1K"))
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129 ((< size 1048576) (concat " "
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130 (int-to-string
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131 (max 1 (/ size 1024))) "K"))
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132 (t
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133 (let* ((megs (max 1 (/ size 1048576)))
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134 (kilo (/ (- size (* megs 1048576)) 1024)))
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135 (concat " " (int-to-string megs)
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136 (if (> kilo 0)
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137 (concat "." (int-to-string kilo))
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138 "") "M"))))))
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139 (cond
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140 ((or (equal "." (car files))
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141 (equal "/.." (car files)))
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142 nil)
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143 ((equal ".." (car files))
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144 (if (not (= ?/ (aref file (1- (length file)))))
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145 (setq file (concat file "/"))))
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146 ((stringp (nth 0 attr)) ; Symbolic link handling
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147 (insert "[LNK] <a href=\"./" file "\">" (car files) "</a>"
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148 (make-string (max 0 (- 25 (length (car files)))) ? )
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149 mod-time size "\n"))
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150 ((nth 0 attr) ; Directory handling
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151 (insert "[DIR] <a href=\"./" file "/\">" (car files) "</a>"
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152 (make-string (max 0 (- 25 (length (car files)))) ? )
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153 mod-time size "\n"))
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154 ((string-match "image" typ)
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155 (insert "[IMG] <a href=\"./" file "\">" (car files) "</a>"
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156 (make-string (max 0 (- 25 (length (car files)))) ? )
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157 mod-time size "\n"))
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158 ((string-match "application" typ)
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159 (insert "[APP] <a href=\"./" file "\">" (car files) "</a>"
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160 (make-string (max 0 (- 25 (length (car files)))) ? )
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161 mod-time size "\n"))
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162 ((string-match "text" typ)
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163 (insert "[TXT] <a href=\"./" file "\">" (car files) "</a>"
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164 (make-string (max 0 (- 25 (length (car files)))) ? )
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165 mod-time size "\n"))
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166 (t
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167 (insert "[UNK] <a href=\"./" file "\">" (car files) "</a>"
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168 (make-string (max 0 (- 25 (length (car files)))) ? )
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169 mod-time size "\n")))
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170 (setq files (cdr files)))
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171 (insert " </pre>\n"
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172 " </div>\n"
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173 " </body>\n"
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174 "</html>\n"
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175 "<!-- Automatically generated by URL v" url-version
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176 " -->\n")))))
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177
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178 (defun url-host-is-local-p (host)
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179 "Return t iff HOST references our local machine."
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180 (let ((case-fold-search t))
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181 (or
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182 (null host)
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183 (string= "" host)
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184 (equal (downcase host) (downcase (system-name)))
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185 (and (string-match "^localhost$" host) t)
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186 (and (not (string-match (regexp-quote ".") host))
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187 (equal (downcase host) (if (string-match (regexp-quote ".")
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188 (system-name))
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189 (substring (system-name) 0
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190 (match-beginning 0))
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191 (system-name)))))))
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192
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193 (defun url-file (url)
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194 ;; Find a file
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195 (let* ((urlobj (url-generic-parse-url url))
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196 (user (url-user urlobj))
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197 (site (url-host urlobj))
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198 (file (url-unhex-string (url-filename urlobj)))
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199 (dest (url-target urlobj))
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200 (filename (if (or user (not (url-host-is-local-p site)))
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201 (concat "/" (or user "anonymous") "@" site ":" file)
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202 file)))
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203
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204 (if (and file (url-host-is-local-p site)
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205 (memq system-type '(ms-windows ms-dos windows-nt os2)))
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206 (let ((x (1- (length file)))
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207 (y 0))
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208 (while (<= y x)
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209 (if (= (aref file y) ?\\ )
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210 (aset file y ?/))
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211 (setq y (1+ y)))))
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212
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213 (url-clear-tmp-buffer)
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214 (cond
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215 ((file-directory-p filename)
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216 (if url-use-hypertext-dired
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217 (progn
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218 (if (string-match "/$" filename)
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219 nil
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220 (setq filename (concat filename "/")))
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221 (if (string-match "/$" file)
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222 nil
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223 (setq file (concat file "/")))
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224 (url-set-filename urlobj file)
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225 (url-format-directory filename))
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226 (progn
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227 (if (get-buffer url-working-buffer)
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228 (kill-buffer url-working-buffer))
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229 (find-file filename))))
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230 ((and (boundp 'w3-dump-to-disk) (symbol-value 'w3-dump-to-disk))
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231 (cond
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232 ((file-exists-p filename) nil)
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233 ((file-exists-p (concat filename ".Z"))
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234 (setq filename (concat filename ".Z")))
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235 ((file-exists-p (concat filename ".gz"))
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236 (setq filename (concat filename ".gz")))
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237 ((file-exists-p (concat filename ".z"))
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238 (setq filename (concat filename ".z")))
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239 (t
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240 (error "File not found %s" filename)))
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241 (cond
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242 ((url-host-is-local-p site)
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243 (copy-file
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244 filename
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245 (read-file-name "Save to: " nil (url-basepath filename t)) t))
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246 ((featurep 'ange-ftp)
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247 (ange-ftp-copy-file-internal
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248 filename
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249 (expand-file-name
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250 (read-file-name "Save to: " nil (url-basepath filename t))) t
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251 nil t nil t))
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252 ((or (featurep 'efs) (featurep 'efs-auto))
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253 (let ((new (expand-file-name
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254 (read-file-name "Save to: " nil
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255 (url-basepath filename t)))))
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256 (efs-copy-file-internal filename (efs-ftp-path filename)
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257 new (efs-ftp-path new)
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258 t nil 0 nil 0 nil)))
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259 (t (copy-file
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260 filename
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261 (read-file-name "Save to: " nil (url-basepath filename t)) t)))
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262 (if (get-buffer url-working-buffer)
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263 (kill-buffer url-working-buffer)))
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264 (t
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265 (let ((viewer (mm-mime-info
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266 (mm-extension-to-mime (url-file-extension file))))
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267 (errobj nil))
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268 (if (or url-source ; Need it in a buffer
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269 (and (symbolp viewer)
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270 (not (eq viewer 'w3-default-local-file)))
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271 (stringp viewer))
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272 (condition-case errobj
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273 (url-insert-possibly-compressed-file filename t)
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274 (error
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275 (url-save-error errobj)
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276 (url-retrieve (concat "www://error/nofile/" file))))))))
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277 (setq url-current-type (if site "ftp" "file")
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278 url-current-object urlobj
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279 url-find-this-link dest
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280 url-current-user user
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281 url-current-server site
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282 url-current-mime-type (mm-extension-to-mime
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283 (url-file-extension file))
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284 url-current-file file)))
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285
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286 (fset 'url-ftp 'url-file)
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287
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288 (provide 'url-file)
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