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1 ;;; lpr.el --- print Emacs buffer on line printer.
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2
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3 ;; Copyright (C) 1985, 1988, 1992, 1994 Free Software Foundation, Inc.
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4
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5 ;; Maintainer: FSF
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6 ;; Keywords: unix
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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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2
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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: FSF 19.34.
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26
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27 ;;; Commentary:
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28
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29 ;; Commands to send the region or a buffer your printer. Entry points
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30 ;; are `lpr-buffer', `print-buffer', lpr-region', or `print-region'; option
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31 ;; variables include `lpr-switches' and `lpr-command'.
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32
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33 ;;; Code:
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34
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134
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35 (defgroup lpr nil
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36 "Print Emacs buffer on line printer"
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37 :group 'wp)
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38
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39
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40 ;;;###autoload
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134
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41 (defcustom lpr-switches nil
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42 "*List of strings to pass as extra options for the printer program.
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134
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43 See `lpr-command'."
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44 :type '(repeat (string :tag "Argument"))
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45 :group 'lpr)
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46
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134
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47 (defcustom lpr-add-switches (eq system-type 'berkeley-unix)
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2
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48 "*Non-nil means construct -T and -J options for the printer program.
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49 These are made assuming that the program is `lpr';
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50 if you are using some other incompatible printer program,
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134
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51 this variable should be nil."
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52 :type 'boolean
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53 :group 'lpr)
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54
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55 ;;;###autoload
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134
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56 (defcustom lpr-command
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57 (if (memq system-type '(usg-unix-v dgux hpux irix))
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58 "lp" "lpr")
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134
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59 "*Name of program for printing a file."
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60 :type 'string
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61 :group 'lpr)
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62
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63 ;; Default is nil, because that enables us to use pr -f
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64 ;; which is more reliable than pr with no args, which is what lpr -p does.
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134
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65 (defcustom lpr-headers-switches nil
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66 "*List of strings of options to request page headings in the printer program.
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67 If nil, we run `lpr-page-header-program' to make page headings
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68 and print the result."
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69 :type '(repeat (string :tag "Argument"))
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70 :group 'lpr)
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71
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134
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72 (defcustom print-region-function nil
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73 "Function to call to print the region on a printer.
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74 See definition of `print-region-1' for calling conventions."
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75 :type 'function
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76 :group 'lpr)
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77
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134
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78 (defcustom lpr-page-header-program "pr"
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79 "*Name of program for adding page headers to a file."
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80 :type 'string
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81 :group 'lpr)
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82
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83 (defcustom lpr-page-header-switches '("-f")
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84 "*List of strings to use as options for the page-header-generating program.
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85 The variable `lpr-page-header-program' specifies the program to use."
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86 :type '(repeat string)
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87 :group 'lpr)
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88
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89 ;;;###autoload
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90 (defun lpr-buffer ()
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91 "Print buffer contents as with Unix command `lpr'.
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92 `lpr-switches' is a list of extra switches (strings) to pass to lpr."
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93 (interactive)
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94 (print-region-1 (point-min) (point-max) lpr-switches nil))
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95
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96 ;;;###autoload
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97 (defun print-buffer ()
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98 "Print buffer contents as with Unix command `lpr -p'.
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99 `lpr-switches' is a list of extra switches (strings) to pass to lpr."
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100 (interactive)
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101 (print-region-1 (point-min) (point-max) lpr-switches t))
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102
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103 ;;;###autoload
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104 (defun lpr-region (start end)
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105 "Print region contents as with Unix command `lpr'.
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106 `lpr-switches' is a list of extra switches (strings) to pass to lpr."
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107 (interactive "r")
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108 (print-region-1 start end lpr-switches nil))
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109
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110 ;;;###autoload
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111 (defun print-region (start end)
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112 "Print region contents as with Unix command `lpr -p'.
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113 `lpr-switches' is a list of extra switches (strings) to pass to lpr."
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114 (interactive "r")
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115 (print-region-1 start end lpr-switches t))
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116
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74
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117 ;; XEmacs change
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118 (require 'message) ; Until We can get some sensible autoloads, or
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119 ; message-flatten-list gets put somewhere decent.
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120 (defun print-region-1 (start end switches page-headers)
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121 ;; On some MIPS system, having a space in the job name
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122 ;; crashes the printer demon. But using dashes looks ugly
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123 ;; and it seems to annoying to do for that MIPS system.
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124 (let ((name (concat (buffer-name) " Emacs buffer"))
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125 (title (concat (buffer-name) " Emacs buffer"))
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126 ;; On MS-DOS systems, make pipes use binary mode if the
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127 ;; original file is binary.
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128 (binary-process-input buffer-file-type)
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129 (binary-process-output buffer-file-type)
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130 (width tab-width)
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74
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131 nswitches
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132 switch-string)
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133 (save-excursion
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134 (if page-headers
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135 (if lpr-headers-switches
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136 ;; It is possible to use an lpr option
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137 ;; to get page headers.
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138 (setq switches (append (if (stringp lpr-headers-switches)
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139 (list lpr-headers-switches)
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140 lpr-headers-switches)
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141 switches))))
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74
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142 (setq nswitches (message-flatten-list ; XEmacs
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143 (mapcar '(lambda (arg) ; Dynamic evaluation
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144 (cond ((stringp arg) arg)
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145 ((functionp arg) (apply arg nil))
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146 ((symbolp arg) (eval arg))
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147 ((consp arg) (apply (car arg)
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148 (cdr arg)))
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149 (t nil)))
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150 switches)))
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151 (setq switch-string
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74
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152 (if nswitches (concat " with options "
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153 (mapconcat 'identity nswitches " "))
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154 ""))
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155 (message "Spooling%s..." switch-string)
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156 (if (/= tab-width 8)
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157 (let ((new-coords (print-region-new-buffer start end)))
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158 (setq start (car new-coords) end (cdr new-coords))
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159 (setq tab-width width)
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160 (save-excursion
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161 (goto-char end)
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162 (setq end (point-marker)))
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163 (untabify (point-min) (point-max))))
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164 (if page-headers
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165 (if lpr-headers-switches
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166 ;; We handled this above by modifying SWITCHES.
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167 nil
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168 ;; Run a separate program to get page headers.
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169 (let ((new-coords (print-region-new-buffer start end)))
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170 (setq start (car new-coords) end (cdr new-coords)))
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171 (apply 'call-process-region start end lpr-page-header-program
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172 t t nil
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173 (nconc (and lpr-add-switches
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174 (list "-h" title))
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175 lpr-page-header-switches))
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176 (setq start (point-min) end (point-max))))
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177 (apply (or print-region-function 'call-process-region)
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178 (nconc (list start end lpr-command
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179 nil nil nil)
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180 (nconc (and lpr-add-switches
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181 (list "-J" name))
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182 ;; These belong in pr if we are using that.
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183 (and lpr-add-switches lpr-headers-switches
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184 (list "-T" title))
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185 nswitches)))
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186 (if (markerp end)
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187 (set-marker end nil))
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188 (message "Spooling%s...done" switch-string))))
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189
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190 ;; This function copies the text between start and end
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191 ;; into a new buffer, makes that buffer current.
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192 ;; It returns the new range to print from the new current buffer
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193 ;; as (START . END).
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194
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195 (defun print-region-new-buffer (ostart oend)
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196 (if (string= (buffer-name) " *spool temp*")
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197 (cons ostart oend)
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198 (let ((oldbuf (current-buffer)))
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199 (set-buffer (get-buffer-create " *spool temp*"))
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200 (widen) (erase-buffer)
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201 (insert-buffer-substring oldbuf ostart oend)
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202 (cons (point-min) (point-max)))))
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203
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204 (defun printify-region (begin end)
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205 "Turn nonprinting characters (other than TAB, LF, SPC, RET, and FF)
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206 in the current buffer into printable representations as control or
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207 hexadecimal escapes."
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208 (interactive "r")
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209 (save-excursion
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210 (goto-char begin)
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211 (let (c)
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212 (while (re-search-forward "[\^@-\^h\^k\^n-\^_\177-\377]" end t)
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213 (setq c (preceding-char))
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214 (delete-backward-char 1)
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215 (insert
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216 (if (< c ?\ )
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217 (format "\\^%c" (+ c ?@))
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218 (format "\\%02x" c)))))))
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219
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220 (provide 'lpr)
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221
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222 ;;; lpr.el ends here
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