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% Copyright (C) 2001-2019 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.
%
% Construct an inverse map from CIDs to codes.
% Create an inverse map from CIDs to code values.
% We only use this for 16-bit Unicode, so it has some limitations.
% After invoking .cmap2code, loading a CMap file prints out the map
% instead of doing what it usually does. For example:
%
% gs -dNODISPLAY -dBATCH lib/cid2code.ps -c .cmap2code\
% -f Resource/CMap/UniJIS-UCS2-H > mapfile
/.cmap2codedict 10 dict begin
/begincmap {
mark
} def
/endcmap {
% Stack: mark code_lo1 code_hi1 cid1 ...
20 dict begin
/depth counttomark 3 sub def
% Do a first pass to determine the maximum CID.
0 0 3 depth {
1 add /d exch def
d index d 2 add index 1 get add d 3 add index 1 get sub .max
} for
1 add /ncid exch def
/map ncid 2 mul string def
% Now fill in the map.
0 3 depth {
/d exch def
d index 2 mul /cid2 exch def
d 1 add index /hi exch def
d 2 add index 2 string copy /lo exch def
lo 1 get 1 hi 1 get {
map cid2 lo 0 get put
map cid2 1 add 3 -1 roll put
/cid2 cid2 2 add def
} for
} for
% Print the map.
(%stdout) (w) file
dup (<) print
dup /ASCIIHexEncode filter
dup map writestring
closefile
() = flush
closefile
end
} def
%/begincodespacerange
/endcodespacerange {cleartomark} def
%/usecmap
%/beginbfchar
/endbfchar {cleartomark} def
%/beginbfrange
/endbfrange {cleartomark} def
%/begincidchar
/endcidchar {
counttomark 2 idiv { dup counttomark 1 add 3 roll } repeat pop
} def
%/begincidrange
/endcidrange {
counttomark 1 add -1 roll pop
} def
%/beginnotdefchar
/endnotdefchar {cleartomark} def
%/beginnotdefrange
/endnotdefrange {cleartomark} def
currentdict end readonly def
/.cmap2code { % - .cmap2code -
/CIDInit /ProcSet findresource dup length dict copy
.cmap2codedict { 3 copy put pop pop } forall
/CIDInit exch /ProcSet defineresource pop
} def
% Extract and print reverse mapping information from a cid2code.txt file.
/.printhex2 { % <int16> .printhex2 -
(<) print
16#10000 add 16 =string cvrs 1 4 getinterval print
(>) print
} def
/.cid2code { % <cmaptemplate> <file> <column> .cid2code -
30 dict begin
/column exch def
(r) file /f exch def
(%!) =
(/CIDInit /ProcSet findresource begin 12 dict begin begincmap) =
% Print the information from the template.
{
exch ==only ( ) print
dup type /dicttype eq {
dup length =only ( dict dup begin) = {
( ) print exch ===only ( ) print ===only ( def) =
} forall (end def) =
} {
===only
} ifelse ( def) =
} forall
% Read the data from the cid2code.txt file.
{
f =string readline pop (CID\t) anchorsearch { pop pop exit } if pop
} loop
/map [ {
f =string readline not { pop exit } if
column { (\t) search pop pop pop } repeat
(\t) search { exch pop exch pop } if
(,) search { exch pop exch pop } if
dup length 4 ne { pop (*) } if
dup (*) eq { pop (0000) } if
(16#) exch concatstrings cvi
} loop ] def
% Print the code space range(s).
/maxcid map length 1 sub def
mark maxcid
dup 255 and 255 eq {
0 exch
} {
dup 16#ff00 and exch 0 2 index 1 sub
} ifelse
counttomark 2 idiv dup =only ( begincodespacerange) = {
exch .printhex2 .printhex2 () =
} repeat (endcodespacerange) =
% Print the map data.
0 1 100 maxcid {
/lo exch def
/hi lo 99 add maxcid .min def
0 lo 1 hi { map exch get 0 ne { 1 add } if } for
dup 0 eq {
pop
} {
=only ( begincidchar) = lo 1 hi {
map 1 index get dup 0 eq { pop pop } { exch .printhex2 = } ifelse
} for (endcidchar) =
} ifelse
} for
% Wrap up.
(endcmap CMapName currentdict /CMap defineresource pop end end) =
f closefile
end
} bind def