Updated coding style

dev/CODING_STYLE.TXT

@@ -1,4 +1,4 @@
-Coding style used for my bash projects (v2.6 Nov 2016)
+Coding style used for my bash projects (v3.0 Dec 2016)
 
 ++++++ Header
 
@@ -143,7 +143,10 @@ The following log levels exist:
 - CRITICAL: Program execution is halted
 
 Can be called with:
-Logger "My message" "LOGLEVEL"
+Logger "My message" "LOGLEVEL" $retval
+
+$retval is an optional parameter that passes the exit code of the command that triggered the logging message
+$retval, along with function stack, script pid and current pid can be found in the ERROR /WARN alert files ($RUN_DIR/$PROGRAM.Logger.error.$SCRIPT_PID)
 
 ++++++ Eval
 
@@ -153,14 +156,36 @@ The basic way of doing is:
 cmd='"something '$somevar'" > some_file 2>&1'
 eval $cmd &
 WaitForTaskCompletion $! 0 0 $FUNCNAME
+retval=$?
+if [ $retval -ne 0 ]; then
+	Logger "Some error message" "ERROR" $retval
+fi
 
-Remote commands should exist as:
+Remote commands should always invoke bash (using '"'"' to escape single quotes of 'bash -c "command"'). It is preferable to use ssh heredoc in order to use plain code.
+If local and remote code is identical, wrap remote code in a function so only minor modifications are needed.
+Remote code return code is transmitted via exit.
 
-cmd=$SSH_CMD' "some; commands \"'$VARIABLE'\" some; other; commands" > some_file 2>&1'
+cmd=$SSH_CMD' '"'"'bash -c "some; commands \"'$VARIABLE'\" some; other; commands" > some_file'"'"' 2>&1'
+
+Better formule
+
+$SSH_CMD remoteVar="'$localVar'" 'bash -s' << 'ENDSSH' > 2>&1
+function remoteSub {
+	some code
+	return 0
+}
+
+remoteSub
+exit $?
+ENDSSH
+retval=$?
+if [ $retval -ne 0 ]; then
+	Logger "Some error message" "ERROR" $retval
+fi
 
 ++++++ File variables
 
-All eval cmd should exit their content to a file called "$RUNDIR/osync.$FUNCNAME.$SCRIPT_PID"
+All eval cmd should exit their content to a file called "$RUNDIR/$PROGRAM.${FUNCNAME[0]}.$SCRIPT_PID"
 Dots are used instead of '_' so variables can be separated with a forbidden char in variable names, so the separtors apply as wished.
 
 
@@ -196,6 +221,28 @@ function FunctionName {
 
 These functions are inserted into code that has placeholders like #__FUNC:FuncName
 
++++++++ includes
+
+ofunctions parts can be directly included in shell scripts.
+The parts that needs to be included must be contained within specific comments:
+
+#### MyFunction SUBSET ####
+function MyFunction {
+	...
+}
+#### MyFunction SUBSET END ####
+
+These can later be included in shell scripts with:
+
+
+include #### MyFunction SUBSET ####
+
+In order to have those includes parsed, we use bootstrap.sh to launch the original shell script.
+Original shell script will not work because include is not a bash statement.
+Include the following code into original shell script
+
+include #### _OFUNCTIONS_BOOTSTRAP SUBSET ####
+[ "$_OFUNCTIONS_BOOTSTRAP" != true ] && echo "Please use bootstrap.sh to load this dev version of $(basename $0)" && exit 1
 +++++++ Exit codes
 
 Normal exit code = 0