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Diffstat (limited to 'Master/tlpkg/tlgs/lib/ps2epsi.ps')
| -rw-r--r-- | Master/tlpkg/tlgs/lib/ps2epsi.ps | 252 |
1 files changed, 252 insertions, 0 deletions
diff --git a/Master/tlpkg/tlgs/lib/ps2epsi.ps b/Master/tlpkg/tlgs/lib/ps2epsi.ps new file mode 100644 index 00000000000..66d4ad6618a --- /dev/null +++ b/Master/tlpkg/tlgs/lib/ps2epsi.ps @@ -0,0 +1,252 @@ +% Copyright (C) 1990, 2000 Aladdin Enterprises. 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.
+%
+% For more information about licensing, please refer to
+% http://www.ghostscript.com/licensing/. For information on
+% commercial licensing, go to http://www.artifex.com/licensing/ or
+% contact Artifex Software, Inc., 101 Lucas Valley Road #110,
+% San Rafael, CA 94903, U.S.A., +1(415)492-9861.
+
+% $Id: ps2epsi.ps 8726 2008-05-11 17:00:17Z alexcher $
+% Convert an arbitrary PostScript file to an EPSI file.
+%
+% Please do not contact these users if you have questions. They no longer
+% have the time, interest, or current expertise to keep this code working.
+% If you find bugs, please send proposed fixes to bug-gs@ghostscript.com.
+%
+% Bug fix 2002-04-20 by rayjj: Bounding box was incorrect since it depended
+% on the dither pattern and gray shade at the boundary. Changed to use
+% 8-bit grayscale preview image to allow correct bounding box (at the
+% expense of a 8x larger preview image). Also moved .setsafe until after
+% the device and file operations are complete (but still before the input
+% file is processed.
+% Bug fix 2000-04-11 by lpd: if a font didn't have a FontName (which is the
+% case for bitmap fonts produced by recent versions of dvips), setfont
+% caused an error.
+% Bug fix 8/21/99 by lpd: many of the margin and width computations were
+% wrong (off by 1). The code only "worked" because the bugs were
+% (mostly) in conservative directions.
+% Modified 3/17/98 by lpd to make it possible to run this file without
+% running the ps2epsi script first, for debugging.
+% Bug fix 9/29/97 by lpd <ghost@aladdin.com>: if the page size wasn't an
+% exact multiple of 8 bits, an incorrect bounding box (or a rangecheck
+% error) could occur.
+% Patched 7/26/95 by
+% Greg P. Kochanski <gpk@bell-labs.com>
+% to add many new DSC comments and make the comments conforming.
+% Original version contributed by
+% George Cameron <george@bio-medical-physics.aberdeen.ac.uk>
+%
+
+% Initialize, and redefine copypage and showpage.
+
+% ps2edict is normally defined in the pre-loaded code created by the
+% ps2epsi script.
+/ps2edict where { pop } { /ps2edict 25 dict def } ifelse
+ps2edict begin
+
+ % The main procedure
+ /ps2epsi
+ { % Open the file
+ outfile (w) file /epsifile exch def
+ % Get the device parameters
+ currentdevice getdeviceprops .dicttomark
+ /HWSize get aload pop
+ /devheight exch def
+ /devwidth exch def
+ matrix defaultmatrix
+ /devmatrix exch def
+ % Make a corresponding 8-bit deep memory device
+ devmatrix devwidth devheight
+ 256 string 0 1 255 { 1 index exch dup 255 exch sub put } for
+ makeimagedevice
+ /arraydevice exch def
+ arraydevice
+ % Turn on anti-aliasing
+ mark /TextAlphaBits 4 /GraphicsAlphaBits 4 6 -1 roll
+ putdeviceprops
+ setdevice % (does an erasepage)
+ /rowwidth devwidth def
+ /row rowwidth string def
+ /zerorow rowwidth string def % all zero
+ % Replace the definition of showpage
+ userdict /showpage { ps2edict begin epsipage end } bind put
+ userdict /setfont { ps2edict begin epsisetfont end } bind put
+ userdict /setpagedevice /pop load put
+ //systemdict /.setsafe known { .setsafe } if
+ } bind def
+
+ /epsifontdict 100 dict def
+
+ /epsisetfont
+ {
+ % code here keeps a list of font names in dictionary epsifontdict
+ /tmpfont exch def
+ tmpfont /FontName known {
+ /tmpfontname tmpfont /FontName get def
+ epsifontdict tmpfontname known not { epsifontdict tmpfontname 0 put } if
+ epsifontdict tmpfontname 2 copy get 1 add put
+ } if
+ tmpfont setfont
+ } bind def
+
+% Get a scan line from the memory device, zeroing any bits beyond
+% the device width.
+/getscanline { % <device> <y> <string> getscanline <string>
+ dup 4 1 roll copyscanlines pop
+ 16#ff00 devwidth 7 and neg bitshift 255 and
+ dup 0 ne {
+ 1 index dup length 1 sub 2 copy get 4 -1 roll and put
+ } {
+ pop
+ } ifelse
+} bind def
+
+/margintest { % <y-start> <step> <y-limit> margintest <y-non-blank>
+ % <y-start> <step> <y-limit> margintest -
+ { dup arraydevice exch row getscanline
+ zerorow ne { exit } if pop
+ } for
+} bind def
+
+
+ /epsiNameStr 200 string def
+ /epsiNpages 0 def
+ /epsiNpageStr 20 string def
+ /epsipage
+ {
+ /epsiNpages epsiNpages 1 add def
+ /loopcount devheight 1 sub def
+
+ % Find top margin -- minimum Y of non-blank scan line.
+ -1 0 1 loopcount margintest
+ dup -1 eq { (blank page!!\n) print quit }{ exch pop } ifelse
+ /tm exch def
+
+ % Find bottom margin -- maximum Y of non-blank scan line.
+ loopcount -1 0 margintest
+ /bm exch def
+
+ % Initialise limit variables
+ /loopcount rowwidth 1 sub def
+ /lm loopcount def
+ /rm 0 def
+
+ % Find left and right boundaries of image
+ tm 1 bm
+ { % Get more data
+ arraydevice exch row getscanline pop
+ % Scan from left to find first non-zero element
+ % We save first the element, then the index
+ -1 0 1 loopcount
+ { dup row exch get 0 ne { exch pop exit }{ pop } ifelse
+ } for
+ % If we found -1, row is blank ..
+ dup -1 ne
+ { % Find the leftmost index
+ dup lm lt
+ % If the new index is less, we save index and element
+ { /lm exch def } { pop } ifelse
+ % Now find the rightmost index
+ loopcount -1 0
+ { dup row exch get 0 ne { exit }{ pop } ifelse
+ } for
+ dup rm gt
+ % If the new index is greater, we save index and element
+ { /rm exch def } { pop } ifelse
+ } {
+ pop
+ } ifelse
+ } for
+
+ % Calculate the bounding box values.
+ % Note that these must be corrected to produce closed-open intervals.
+ /llx lm def
+ /lly devheight bm sub 1 sub def
+ /urx rm 1 add def
+ /ury devheight tm sub def
+
+ % Write out the magic string and bounding box information
+ epsifile (%!PS-Adobe-2.0 EPSF-1.2\n) writestring
+ /epsititle where { pop epsifile epsititle writestring } if
+ /epsicreator where { pop epsifile epsicreator writestring } if
+ /epsicrdt where { pop epsifile epsicrdt writestring } if
+ /epsifor where { pop epsifile epsifor writestring } if
+ epsifile flushfile
+
+ % Write out the page count:
+ epsifile (%%Pages: ) writestring
+ epsifile epsiNpages epsiNpageStr cvs writestring
+ epsifile (\n) writestring
+ epsifile flushfile
+
+ % Write out the list of used fonts:
+ epsifile (%%DocumentFonts:) writestring
+ epsifontdict {
+ epsifile ( ) writestring
+ pop epsiNameStr cvs epsifile exch writestring
+ } forall
+ epsifile (\n) writestring
+ epsifile flushfile
+
+ epsifile (%%BoundingBox: ) writestring
+ epsifile llx write==only epsifile ( ) writestring
+ epsifile lly write==only epsifile ( ) writestring
+ epsifile urx write==only epsifile ( ) writestring
+ epsifile ury write==
+
+ % Define character and bit widths for the output line buffer:
+ /cwidth rm lm sub 1 add def
+ /out cwidth string def
+
+ epsifile (%%EndComments\n\n) writestring
+ epsifile (%%BeginProlog\n) writestring
+ epsifile (%%BeginPreview: ) writestring
+ epsifile cwidth write==only epsifile ( ) writestring
+ epsifile bm tm sub 1 add write==only epsifile ( 8 ) writestring
+ epsifile bm tm sub 1 add
+ cwidth 39 add 40 idiv mul write==
+ epsifile flushfile
+
+ gsave
+
+ tm 1 bm
+ { % Get a scan line interval from the array device
+ arraydevice exch row copyscanlines lm cwidth getinterval
+ % Write out the hex data as 40 bytes per line (82 chars)
+ 0 40 cwidth
+ { epsifile (% ) writestring
+ epsifile exch 2 index exch
+ dup cwidth exch sub 40 .min getinterval writehexstring
+ epsifile (\n) writestring
+ } for
+ pop
+ } for
+
+ epsifile (%%EndImage\n) writestring
+ epsifile (%%EndPreview\n) writestring
+ epsifile flushfile
+ grestore
+ erasepage initgraphics
+
+ DonePage 0 1 put
+ } bind def
+
+
+(outfile) getenv
+ { /outfile exch def
+ ps2epsi
+
+ /DonePage 1 string def
+ (%stdin) (r) file cvx execute0
+ DonePage 0 get 0 eq { showpage } if
+ } if
+
+end
+quit
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