✏ 编辑: gsnup.ps

%!
% Copyright (C) 2001-2018 Artifex Software, Inc.
% All Rights Reserved.
%
% This software is provided AS-IS with no warranty, either express or
% implied.
%
% This software is distributed under license and may not be copied,
% modified or distributed except as expressly authorized under the terms
% of the license contained in the file LICENSE in this distribution.
%
% Refer to licensing information at http://www.artifex.com or contact
% Artifex Software, Inc.,  1305 Grant Avenue - Suite 200, Novato,
% CA 94945, U.S.A., +1(415)492-9861, for further information.
%

% Prefix this to very well-behaved PostScript files for n-up printing.

/cdef { 1 index where { pop pop } { def } ifelse } def

%%%%%%%%%%%%%%%% Begin parameters %%%%%%%%%%%%%%%%

% All parameters are also settable from the command line with -d, e.g.,
% -d.Nx=3

/.Nx 2 cdef			% # of pages across the physical page
/.Ny 2 cdef			% # of pages down the physical page
/.Landscape false cdef		% if true, rotate page by 90 degrees

%%%%%%%%%%%%%%%% End parameters %%%%%%%%%%%%%%%%

vmstatus pop pop 0 eq { save pop } if
.Landscape {
  currentpagedevice /PageSize get aload pop
  exch 2 array astore
  1 dict dup /PageSize 4 -1 roll put
  setpagedevice
} if
/.BP currentpagedevice /BeginPage get def
/.EP currentpagedevice /EndPage get def
/.Ps 1 string def	% survive save/restore
/.Pn { .Ps 0 get } def
true setglobal		% protect from restore
/.ELevel [0] def
/.Rmat matrix def
false setglobal
/.max { 2 copy lt { exch } if pop } cdef
% Work around the common save ... showpage ... restore locution.
/restore {
  .Rmat currentmatrix pop restore
  vmstatus pop pop .ELevel 0 get lt { .Rmat setmatrix } if
} bind def
<<
  /BeginPage {
    .Nx .Ny .max
    gsave
      initclip clippath pathbbox exch 4 -1 roll sub 3 1 roll exch sub
    grestore
    2 copy exch .Nx div exch .Ny div
    .Pn dup .Nx mod exch .Nx idiv .Ny 1 sub exch sub
                % Stack: nmax pw ph pw/nx ph/ny ix iy
    exch 3 index mul exch 2 index mul
    translate
                % Stack: nmax pw ph pw/nx ph/ny
    4 -1 roll 4 index div 4 -1 roll 4 index div
                % Stack: nmax pw/nx ph/ny pw/nmax ph/nmax
    exch 4 -1 roll exch sub 2 div
    3 1 roll sub 2 div
    translate
                % Stack: nmax
    1 exch div dup scale
    .BP
  }
  /EndPage {
    dup 2 lt {
      .ELevel 0 vmstatus pop pop put
      .Ps 0 .Pn 1 add .Nx .Ny mul mod put
      .Pn 0 eq {
        .EP
      } {
        pop pop false
      } ifelse
    } {
      pop pop false
    } ifelse
  }
>> setpagedevice
/.EOJ {
  { .Pn 0 eq { exit } if showpage } loop
} def

{ currentfile cvx exec .EOJ } exec

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