From d214859aadb31a565718da69754ad2573fa3f917 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Paul=20H=C3=A4nsch?= <paul@plutz.net>
Date: Tue, 17 Jul 2018 22:04:02 +0200
Subject: [PATCH 1/1] dual use string functions (argument and pipe), make
 scripts of sed based functions available in variable

---
 cgilite.sh |  6 +++---
 storage.sh | 42 +++++++++++++++++++++++-------------------
 2 files changed, 26 insertions(+), 22 deletions(-)

diff --git a/cgilite.sh b/cgilite.sh
index 9420b46..e1b3480 100755
--- a/cgilite.sh
+++ b/cgilite.sh
@@ -145,7 +145,7 @@ HTML(){
   # HTML Entity Coding
   # Prints UTF-8 string as decimal Unicode Code Points
   # Useful for escaping user input for use in HTML text and attributes
-  printf %s "$*" \
+  { [ $# -eq 0 ] && cat || printf %s "$*"; } \
   | hexdump -ve '/1 "%03o\n"' \
   | while read n; do
     case $n in
@@ -168,13 +168,13 @@ URL(){
   # Code every character in URL escape hex format
   # except alphanumeric ascii
 
-  printf %s "$*" \
+  { [ $# -eq 0 ] && cat || printf %s "$*"; } \
   | hexdump -v -e '/1 ",%02X"' \
   | sed 's;,;%;g; s;%2F;/;g;'
 }
 
 PATH(){
-  printf %s "$1" \
+  { [ $# -eq 0 ] && cat || printf %s "$*"; } \
   | sed -r 's;^.*$;/&/;; s;/+;/;g;
             :X;
             s;^/\.\./;/;; s;/\./;/;g;
diff --git a/storage.sh b/storage.sh
index a6b6b43..fd75820 100755
--- a/storage.sh
+++ b/storage.sh
@@ -63,27 +63,31 @@ RELEASE(){
   fi
 }
 
+STRING='
+  s;\\;\\\\;g;
+  s;\n;\\n;g;
+  s;\t;\\t;g;
+  s;\r;\\r;g;
+  s;\+;\\+;g;
+  s; ;+;g;
+'
+
 STRING(){
-  printf %s "$*" |sed -r '
-    :X; $!{N;bX;}
-    s;\\;\\\\;g;
-    s;\n;\\n;g;
-    s;\t;\\t;g;
-    s;\r;\\r;g;
-    s;\+;\\+;g;
-    s; ;+;g;
-  '
+  { [ $# -eq 0 ] && cat || printf %s "$*"; } \
+  | printf %s "$*" |sed -r ':X; $!{N;bX;}'"$STRING"
 }
 
+UNSTRING='
+  :UNSTRING_X
+  s;((^|[^\\])(\\\\)*)\\n;\1\n;g;
+  s;((^|[^\\])(\\\\)*)\\t;\1\t;g;
+  s;((^|[^\\])(\\\\)*)\\r;\1\r;g;
+  s;((^|[^\\])(\\\\)*)\+;\1 ;g;
+  tUNSTRING_X;
+  s;((^|[^\\])(\\\\)*)\\\+;\1+;g;
+  s;\\\\;\\;g;
+'
 UNSTRING(){
-  printf %s "$*" |sed -r '
-    :X
-    s;((^|[^\\])(\\\\)*)\\n;\1\n;g;
-    s;((^|[^\\])(\\\\)*)\\t;\1\t;g;
-    s;((^|[^\\])(\\\\)*)\\r;\1\r;g;
-    s;((^|[^\\])(\\\\)*)\+;\1 ;g;
-    tX;
-    s;((^|[^\\])(\\\\)*)\\\+;\1+;g;
-    s;\\\\;\\;g;
-  '
+  { [ $# -eq 0 ] && cat || printf %s "$*"; } \
+  | sed -r "$UNSTRING"
 }
-- 
2.39.2