161 lines
5.2 KiB
Scheme
161 lines
5.2 KiB
Scheme
#| -*-Scheme-*-
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Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
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1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
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2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016,
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2017, 2018, 2019, 2020 Massachusetts Institute of Technology
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This file is part of MIT/GNU Scheme.
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MIT/GNU Scheme is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or (at
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your option) any later version.
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MIT/GNU Scheme is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with MIT/GNU Scheme; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301,
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USA.
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|#
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;;;; Print Buffers and Regions
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(define-command lpr-buffer
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"Print buffer contents as with Unix command `lpr'.
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Variable LPR-SWITCHES is a list of extra switches (strings) to pass to lpr."
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'()
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(lambda ()
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(print-region/internal (buffer-region (current-buffer)) false)))
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(define-command print-buffer
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"Print buffer contents as with Unix command `lpr -p'.
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Variable LPR-SWITCHES is a list of extra switches (strings) to pass to lpr."
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'()
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(lambda ()
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(print-region/internal (buffer-region (current-buffer)) true)))
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(define-command lpr-region
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"Print region contents as with Unix command `lpr'.
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Variable LPR-SWITCHES is a list of extra switches (strings) to pass to lpr."
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"r"
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(lambda (region)
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(print-region/internal region false)))
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(define-command print-region
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"Print region contents as with Unix command `lpr -p'.
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Variable LPR-SWITCHES is a list of extra switches (strings) to pass to lpr."
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"r"
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(lambda (region)
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(print-region/internal region true)))
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(define (print-region/internal region print-headers?)
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((message-wrapper #f "Spooling")
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(lambda ()
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(let ((buffer (mark-buffer (region-start region)))
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(print-headers? (and print-headers? (not lpr-print-not-special?)))
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(title (print-region-title-string region)))
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(let ((call-printer
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(lambda (region)
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((or (ref-variable lpr-procedure buffer)
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(case microcode-id/operating-system
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((NT) print-region/nt)
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(else print-region/default)))
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region print-headers? title buffer)))
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(width (ref-variable tab-width buffer)))
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(if (= width 8)
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(call-printer region)
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(call-with-temporary-buffer " *spool temp*"
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(lambda (temp-buffer)
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(insert-region (region-start region)
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(region-end region)
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(buffer-point temp-buffer))
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(define-variable-local-value! temp-buffer
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(ref-variable-object tab-width)
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width)
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(untabify-region (buffer-start temp-buffer)
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(buffer-end temp-buffer))
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(call-printer (buffer-region temp-buffer))))))))))
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(define (print-region/default region print-headers? title buffer)
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(shell-command region false false false
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(string-append
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(ref-variable lpr-command buffer)
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(print/assemble-switches title
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(if print-headers? '("-p") '())))))
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(define (print-region/nt region print-headers? title buffer)
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print-headers? title buffer
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(call-with-temporary-file-pathname
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(lambda (pathname)
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(call-with-temporary-buffer " print"
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(lambda (temp)
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(insert-region (region-start region)
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(region-end region)
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(buffer-end temp))
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(insert-char #\page (buffer-end temp))
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(write-region (buffer-region temp) pathname #f #t)))
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(shell-command #f #f #f #f
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(string-append "copy "
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(->namestring pathname)
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" prn")))))
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(define (print-region-title-string region)
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(let ((buffer-title
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(let ((buffer (mark-buffer (region-start region))))
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(and buffer
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(or (let ((pathname (buffer-pathname buffer)))
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(and pathname
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(not (directory-pathname? pathname))
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(file-namestring pathname)))
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(string-append "Edwin buffer " (buffer-name buffer)))))))
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(if (or (not buffer-title)
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(and (group-start? (region-start region))
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(group-end? (region-end region))))
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buffer-title
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(string-append "region from " buffer-title))))
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(define (print/assemble-switches title additional-switches)
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(apply string-append
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(let loop
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((switches
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(let ((switches (ref-variable lpr-switches)))
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(append additional-switches
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(let ((job-name (or (print/job-name) title)))
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(if job-name
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(list (string-append "-J \"" job-name "\""))
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'()))
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(if (and title
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(not (any (lambda (switch)
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(string-prefix? "-T" switch))
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switches)))
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(list (string-append "-T \"" title "\""))
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'())
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switches))))
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(if (null? switches)
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(list "")
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(cons* " "
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(car switches)
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(loop (cdr switches)))))))
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(define print/job-name
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(let ((most-recent-name false))
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(lambda ()
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(and lpr-prompt-for-name?
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(let ((job-name
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(prompt-for-string "Name to print on title page"
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most-recent-name
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'DEFAULT-TYPE 'INSERTED-DEFAULT)))
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(if (string-null? job-name)
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false
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(begin
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(set! most-recent-name job-name)
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job-name)))))))
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