From 252c4b181b91b5da77975e9fd4dc72ec0954e9cf Mon Sep 17 00:00:00 2001
From: tg <tg@mirbsd.org>
Date: Tue, 8 Aug 2017 20:38:08 +0000
Subject: [PATCH] =?UTF-8?q?perform=20in=20chunks,=20don=E2=80=99t=20read?=
 =?UTF-8?q?=20the=20entire=20file=20into=20memory=20ahead?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 dot.mkshrc | 46 ++++++++++++++++++++++++----------------------
 1 file changed, 24 insertions(+), 22 deletions(-)

diff --git a/dot.mkshrc b/dot.mkshrc
index 290e934..a4859fd 100644
--- a/dot.mkshrc
+++ b/dot.mkshrc
@@ -1,5 +1,5 @@
 # $Id$
-# $MirOS: src/bin/mksh/dot.mkshrc,v 1.115 2017/08/08 20:22:16 tg Exp $
+# $MirOS: src/bin/mksh/dot.mkshrc,v 1.116 2017/08/08 20:38:08 tg Exp $
 #-
 # Copyright (c) 2002, 2003, 2004, 2006, 2007, 2008, 2009, 2010,
 #		2011, 2012, 2013, 2014, 2015, 2016, 2017
@@ -109,26 +109,28 @@ function hd_mksh {
 	\\builtin typeset dasc line i
 	\\builtin set +U
 
-	\\builtin cat "$@" | if \\builtin read -arN -1 line; then
-		\\builtin typeset -i1 'line[*]'
-		i=0
-		while (( i < ${#line[*]} )); do
-			hv=${line[i++]}
-			if (( (pos & 15) == 0 )); then
-				(( pos )) && \
-				    \\builtin print -r -- "$dasc|"
-				\\builtin print -nr "${pos#16#}  "
-				dasc=' |'
-			fi
-			\\builtin print -nr "${hv#16#} "
-			#XXX EBCDIC, but we need [[:print:]] to fix this
-			if (( (hv < 32) || (hv > 126) )); then
-				dasc+=.
-			else
-				dasc+=${line[i-1]#1#}
-			fi
-			(( (pos++ & 15) == 7 )) && \
-			    \\builtin print -nr -- '- '
+	\\builtin cat "$@" | {
+		while \\builtin read -arn 512 line; do
+			\\builtin typeset -i1 'line[*]'
+			i=0
+			while (( i < ${#line[*]} )); do
+				hv=${line[i++]}
+				if (( (pos & 15) == 0 )); then
+					(( pos )) && \
+					    \\builtin print -r -- "$dasc|"
+					\\builtin print -nr "${pos#16#}  "
+					dasc=' |'
+				fi
+				\\builtin print -nr "${hv#16#} "
+				#XXX EBCDIC, but we need [[:print:]] to fix this
+				if (( (hv < 32) || (hv > 126) )); then
+					dasc+=.
+				else
+					dasc+=${line[i-1]#1#}
+				fi
+				(( (pos++ & 15) == 7 )) && \
+				    \\builtin print -nr -- '- '
+			done
 		done
 		while (( pos & 15 )); do
 			\\builtin print -nr '   '
@@ -136,7 +138,7 @@ function hd_mksh {
 			    \\builtin print -nr -- '- '
 		done
 		(( hv == 2147483647 )) || \\builtin print -r -- "$dasc|"
-	fi
+	}
 }
 
 # Berkeley C shell compatible dirs, popd, and pushd functions