* JSON errors are now labelled with JSON and not XML

* Fixed: [Performance issue when parsing large JSON param](https://github.com/clicon/clixon/issues/266)
* Moved strlen() from for end condition
* Fixed debugging of xpath parser

test/test_perf_json.sh

@@ -0,0 +1,33 @@
+#!/usr/bin/env bash
+# JSON performance test:
+# 1. parse a long string
+
+# Magic line must be first in script (see README.md)
+s="$_" ; . ./lib.sh || if [ "$s" = $0 ]; then exit 0; else return 0; fi
+
+: ${clixon_util_json:="clixon_util_json"}
+
+# Number of list/leaf-list entries in file
+: ${perfnr:=20000}
+
+fjson=$dir/long.json
+
+new "generate long file $fjson"
+echo -n '{"foo": "' > $fjson
+for (( i=0; i<$perfnr; i++ )); do  
+    echo -n "a" >> $fjson
+done
+echo '"}' >> $fjson
+echo "$fjson"
+
+new "json parse long string"
+expecteof_file "time -p $clixon_util_json" 0 "$fjson" 2>&1 | awk '/real/ {print $2}'
+
+rm -rf $dir
+
+# unset conditional parameters 
+unset clixon_util_xml
+unset perfnr
+
+new "endtest"
+endtest