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From 0b74b65ecc0f36d40b8d04a7fa1fa8b5f9d2b3ff Mon Sep 17 00:00:00 2001
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From: Chris Liddell <chris.liddell@artifex.com>
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Date: Thu, 13 Oct 2022 14:55:28 +0100
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Subject: [PATCH] Deal with different VM modes during CIDFont loading
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To help differentiate between a substituted CIDFont and an embedded one, a
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change was made to store the file path in the CIDFont dictionary. That change
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failed to account for the possibility that the file object and the CIDFont
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dictionary may not be in compatible VM modes.
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This adds code to ensure that the string holding the path is in a suitable VM
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mode to be stored into the dictionary.
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Reported by Richard Lescak <rlescak@redhat.com>
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---
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Resource/Init/gs_cidfn.ps | 23 +++++++++++++++++++----
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1 file changed, 19 insertions(+), 4 deletions(-)
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diff --git a/Resource/Init/gs_cidfn.ps b/Resource/Init/gs_cidfn.ps
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index 870a2e11c..fa050ed7a 100644
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--- a/Resource/Init/gs_cidfn.ps
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+++ b/Resource/Init/gs_cidfn.ps
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@@ -1,4 +1,4 @@
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-% Copyright (C) 2001-2021 Artifex Software, Inc.
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+% Copyright (C) 2001-2022 Artifex Software, Inc.
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% All Rights Reserved.
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%
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% This software is provided AS-IS with no warranty, either express or
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@@ -36,6 +36,17 @@
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30 dict begin
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+/.gcompatstringcopy % <string> <global> .gcompatstringcopy <string>
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+{
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+ dup 2 index gcheck eq
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+ { pop }
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+ {
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+ currentglobal 3 1 roll setglobal
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+ dup length string copy
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+ exch setglobal
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+ } ifelse
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+} bind def
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+
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% The key in .cidfonttypes is the CIDFontType value;
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% the value is a procedure that takes a font name and the CIDFont dictionary
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% and replaces the latter with a real font.
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@@ -58,7 +69,7 @@ dup 0 {
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end
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} if
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1 index exch .buildfont9
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- .currentresourcefile dup type /filetype eq { //.filename {1 index exch /ResourcePath exch put} if }{ pop} ifelse
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+ .currentresourcefile dup type /filetype eq { //.filename {1 index gcheck //.gcompatstringcopy exec 1 index exch /ResourcePath exch put} if }{ pop} ifelse
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exch pop
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} put % Don't bind it here, because gs_fapi.ps redefines .buildfont9
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@@ -138,10 +149,11 @@ dup 0 {
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% ------ CIDFontType 1 (FontType 10) ------ %
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+
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dup 1 {
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10 //.checkfonttype exec pop
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1 index exch .buildfont10
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- .currentresourcefile dup type /filetype eq { //.filename {1 index exch /ResourcePath exch put} if }{ pop} ifelse
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+ .currentresourcefile dup type /filetype eq { //.filename {1 index gcheck //.gcompatstringcopy exec 1 index exch /ResourcePath exch put} if }{ pop} ifelse
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exch pop
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} put % Don't bind it here because gs_fapi.ps redefines .buildfont10
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@@ -150,12 +162,15 @@ dup 1 {
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dup 2 {
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11 //.checkfonttype exec pop
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1 index exch .buildfont11
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- .currentresourcefile dup type /filetype eq { //.filename {1 index exch /ResourcePath exch put} if }{ pop} ifelse
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+ .currentresourcefile dup type /filetype eq { //.filename {1 index gcheck //.gcompatstringcopy exec 1 index exch /ResourcePath exch put} if }{ pop} ifelse
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exch pop
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} put % Don't bind it here because gs_fapi.ps redefines .buildfont11
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+currentdict /.gcompatstringcopy .undef
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+
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pop % .cidfonttypes
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+
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% ---------------- Reading CIDFontType 0 files ---------------- %
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/StartData { % <(Binary)|(Hex)> <datalength> StartData -
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--
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2.37.3
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