* Regexp improvements

* Added check for libxml in configure';
  * Added clixon_util_regexp utility function
* Yang state get improvements
  * Integrated state and config into same tree on retrieval, not separate trees
  * Added cli functions `cli_show_config_state()` and `cli_show_auto_state()` for showing combined config and state info.
  * Added integrated state in the main example: `interface/oper-state`.
  * Added performance tests for getting state, see [test/test_perf_state.sh].

test/test_perf_startup.sh

@@ -0,0 +1,121 @@
+#!/bin/bash
+# Startup performance tests for different formats and startup modes.
+
+# Magic line must be first in script (see README.md)
+s="$_" ; . ./lib.sh || if [ "$s" = $0 ]; then exit 0; else return 0; fi
+
+# Number of list/leaf-list entries in file
+: ${perfnr:=10000}
+
+APPNAME=example
+
+cfg=$dir/scaling-conf.xml
+fyang=$dir/scaling.yang
+
+cat <<EOF > $fyang
+module scaling{
+   yang-version 1.1;
+   namespace "urn:example:clixon";
+   prefix ip;
+   container x {
+    list y {
+      key "a";
+      leaf a {
+        type int32;
+      }
+      leaf b {
+        type int32;
+      }
+    }
+    leaf-list c {
+       type string;
+    }
+  }
+}
+EOF
+
+cat <<EOF > $cfg
+<clixon-config xmlns="http://clicon.org/config">
+  <CLICON_CONFIGFILE>$cfg</CLICON_CONFIGFILE>
+  <CLICON_YANG_DIR>$dir</CLICON_YANG_DIR>
+  <CLICON_YANG_DIR>/usr/local/share/clixon</CLICON_YANG_DIR>
+  <CLICON_YANG_MAIN_FILE>$fyang</CLICON_YANG_MAIN_FILE>
+  <CLICON_SOCK>/usr/local/var/$APPNAME/$APPNAME.sock</CLICON_SOCK>
+  <CLICON_BACKEND_PIDFILE>/usr/local/var/example/$APPNAME.pidfile</CLICON_BACKEND_PIDFILE>
+  <CLICON_RESTCONF_PRETTY>false</CLICON_RESTCONF_PRETTY>
+  <CLICON_XMLDB_DIR>$dir</CLICON_XMLDB_DIR>
+  <CLICON_XMLDB_PRETTY>false</CLICON_XMLDB_PRETTY>
+  <CLICON_CLI_MODE>example</CLICON_CLI_MODE>
+  <CLICON_CLI_DIR>/usr/local/lib/example/cli</CLICON_CLI_DIR>
+  <CLICON_CLISPEC_DIR>/usr/local/lib/example/clispec</CLICON_CLISPEC_DIR>
+  <CLICON_CLI_GENMODEL_COMPLETION>1</CLICON_CLI_GENMODEL_COMPLETION>
+  <CLICON_CLI_GENMODEL_TYPE>VARS</CLICON_CLI_GENMODEL_TYPE>
+  <CLICON_CLI_LINESCROLLING>0</CLICON_CLI_LINESCROLLING>
+  <CLICON_FEATURE>ietf-netconf:startup</CLICON_FEATURE>
+</clixon-config>
+EOF
+
+if [ $BE -ne 0 ]; then
+    new "kill old backend"
+    sudo clixon_backend -zf $cfg -y $fyang
+    if [ $? -ne 0 ]; then
+	err
+    fi
+fi
+
+# First generate large XML file
+# Use it latter to generate startup-db in xml, tree formats
+tmpx=$dir/tmp.xml
+new "generate large startup config ($tmpx) with $perfnr entries"
+echo -n "<config><x xmlns=\"urn:example:clixon\">" > $tmpx
+for (( i=0; i<$perfnr; i++ )); do  
+    echo -n "<y><a>$i</a><b>$i</b></y>" >> $tmpx
+done
+echo "</x></config>" >> $tmpx
+
+if false; then # XXX JSON dont work as datastore yet
+# Then generate large JSON file (cant translate namespace - long story)
+tmpj=$dir/tmp.json
+new "generate large startup config ($tmpj) with $perfnr entries"
+echo -n '{"config": {"scaling:x":{"y":[' > $tmpj
+for (( i=0; i<$perfnr; i++ )); do  
+    if [ $i -ne 0 ]; then
+	echo -n ",{\"a\":$i,\"b\":$i}" >> $tmpj
+    else
+	echo -n "{\"a\":$i,\"b\":$i}" >> $tmpj
+    fi
+
+done
+echo "]}}}" >> $tmpj
+fi
+
+# Loop over mode and format
+for mode in startup running; do
+    file=$dir/${mode}_db
+    for format in tree xml; do # json - something w namespaces
+	sudo rm -f $file
+	sudo touch $file
+	sudo chmod 666 $file
+	case $format in
+	    xml)
+		echo "cp $tmpx $file"
+		cp $tmpx $file
+	    ;;
+	    json)
+		cp $tmpj $file
+	    ;;
+	    tree)
+		echo "clixon_util_datastore -d ${mode} -f tree -y $fyang -b $dir -x $tmpx put create"
+
+		clixon_util_datastore -d ${mode} -f tree -y $fyang -b $dir -x $tmpx put create
+	    ;;
+	esac
+	new "Startup format: $format mode:$mode"
+#	echo "time sudo $clixon_backend -F1 -D $DBG -s $mode -f $cfg -y $fyang -o CLICON_XMLDB_FORMAT=$format"
+	# Cannot use start_backend here due to expected error case
+{ time -p sudo $clixon_backend -F1 -D $DBG -s $mode -f $cfg -y $fyang -o CLICON_XMLDB_FORMAT=$format 2> /dev/null; } 2>&1 | awk '/real/ {print $2}'
+
+    done
+done
+
+rm -rf $dir