X-Git-Url: http://git.plutz.net/?p=cgilite;a=blobdiff_plain;f=storage.sh;h=7f70e6480d6c89c8a32d3a9ee3fb68a5bfcc35b6;hp=fd7582057e112f2ec582e6ede8d7dd1995ce2a66;hb=f0383eeb634ce1ae71bfb409a9bc25d84b6d79e9;hpb=d214859aadb31a565718da69754ad2573fa3f917

diff --git a/storage.sh b/storage.sh
index fd75820..7f70e64 100755
--- a/storage.sh
+++ b/storage.sh
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-# Copyright 2018 Paul Hänsch
+# Copyright 2018, 2019 Paul Hänsch
 #
 # This is a file format helper, part of CGIlite.
 # 
@@ -20,6 +20,10 @@
 [ -n "$include_storage" ] && return 0
 include_storage="$0"
 
+CR="
"
+BR='
+'
+
 LOCK(){
   local lock timeout block
   lock="${1}.lock"
@@ -72,11 +76,27 @@ STRING='
   s; ;+;g;
 '
 
-STRING(){
+STRING_OLD(){
   { [ $# -eq 0 ] && cat || printf %s "$*"; } \
-  | printf %s "$*" |sed -r ':X; $!{N;bX;}'"$STRING"
+  | sed -E ':X; $!{N;bX;}'"$STRING"
+}
+
+STRING(){
+  local in out=''
+  [ $# -gt 0 ] && in="$*" || in="$(cat)"
+  while [ "$in" ]; do case $in in
+    \\*) out="${out}\\\\"; in="${in#\\}" ;;
+    "$BR"*) out="${out}\\n"; in="${in#${BR}}" ;;
+    "$CR"*) out="${out}\\r"; in="${in#${CR}}" ;;
+    "	"*) out="${out}\\t"; in="${in#	}" ;;
+    +*) out="${out}\\+"; in="${in#+}" ;;
+    " "*) out="${out}+"; in="${in# }" ;;
+    *) out="${out}${in%%[\\${CR}${BR}	+ ]*}"; in="${in#"${in%%[\\${BR}${CR}	+ ]*}"}" ;;
+  esac; done
+  printf '%s' "$out"
 }
 
+
 UNSTRING='
   :UNSTRING_X
   s;((^|[^\\])(\\\\)*)\\n;\1\n;g;
@@ -87,7 +107,23 @@ UNSTRING='
   s;((^|[^\\])(\\\\)*)\\\+;\1+;g;
   s;\\\\;\\;g;
 '
-UNSTRING(){
+UNSTRING_OLD(){
   { [ $# -eq 0 ] && cat || printf %s "$*"; } \
-  | sed -r "$UNSTRING"
+  | sed -E "$UNSTRING"
 }
+UNSTRING(){
+  local in out=''
+  [ $# -gt 0 ] && in="$*" || in="$(cat)"
+  while [ "$in" ]; do case $in in
+    \\\\*) out="${out}\\"; in="${in#\\\\}" ;;
+    \\n*) out="${out}${BR}"; in="${in#\\n}" ;;
+    \\r*) out="${out}${CR}"; in="${in#\\r}" ;;
+    \\t*) out="${out}	"; in="${in#\\t}" ;;
+    \\+) out="${out}+"; in="${in#\\+}" ;;
+    +*) out="${out} "; in="${in#+}" ;;
+    \\*) in="${in#\\}" ;;
+    *) out="${out}${in%%[\\+]*}"; in="${in#"${in%%[\\+]*}"}" ;;
+  esac; done
+  printf '%s' "$out"
+}
+