X-Git-Url: http://git.plutz.net/?p=cgilite;a=blobdiff_plain;f=storage.sh;h=0d09b262b4d700dac399dbc165ff5250570d16fa;hp=d4fbca36714a0cfe08db9ea9d465d43b3ef83b9c;hb=4feaa19ab266bca60388152b6c1f550d09b1184b;hpb=aa4821bae04b2022828cbbb725874db96ca249fd

diff --git a/storage.sh b/storage.sh
index d4fbca3..0d09b26 100755
--- a/storage.sh
+++ b/storage.sh
@@ -17,7 +17,11 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with CGIlite.  If not, see <http://www.gnu.org/licenses/>. 
 
+[ -n "$include_storage" ] && return 0
+include_storage="$0"
+
 LOCK(){
+  local lock timeout block
   lock="${1}.lock"
   timeout="${2-20}"
   if [ \! -w "${lock%/*}" ] || [ -e "$lock" -a \! -d "$lock" ]; then
@@ -25,7 +29,7 @@ LOCK(){
     return 1
   fi
 
-  while ! mkdir "$lock"; do
+  while ! mkdir "$lock" 2>&-; do
     block="$(cat "$lock/pid" || printf 1)"
     if ! { ps -eo pid |grep -qwF "$block"; }; then
       printf 'Overriding stale lock: %s\n' "$lock" >&2
@@ -39,10 +43,11 @@ LOCK(){
     sleep 1
   done
   printf '%i\n' $$ >"${lock}/pid"
-  return 1
+  return 0
 }
 
 RELEASE(){
+  local lock
   lock="${1}.lock"
   if [ "$(cat "$lock/pid")" = "$$" ]; then
     rm "$lock/pid"
@@ -51,29 +56,38 @@ RELEASE(){
       printf '%i\n' $$ >"${lock}/pid"
       return 1
     fi
+    return 0
   else
     printf 'Refusing to release foreign lock: %s\n' "$lock" >&2
     return 1
   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;
-  '
+  { [ $# -eq 0 ] && cat || printf %s "$*"; } \
+  | 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;
-    tX;
-    s;\\\\;\\;g;
-  '
+  { [ $# -eq 0 ] && cat || printf %s "$*"; } \
+  | sed -r "$UNSTRING"
 }