new_operator

#!/bin/bash

#  name: print_help
#  Print usage of the script and exit
print_help(){
	echo 'The script new_operator allows the simple creation of TMO operator.
Usage: 
    new_operator [-u NameOfOldOperator] NameOfNewOperator
Options:
    -u NameOfOldOperator parameter allows change name of old operator
    NameOfNewOperator name of operator written in CamelCase format
Example:
    ./new_operator -u Ward94 ExampleWard
        Will rename a change TMOWard94 to TMOExampleWard and edit source files in the dir,
        script will also edit CMakeLists.txt
    ./new_operator ExampleOperator
        Will create new operator in the dir TMOExampleOperator, script will also
        add_subdirectory to CMakeLists.txt'
    exit 0
}

#  name: error
#  @param $1 error code
#  @param $2 error message
#  Print error message and exit with specified exit code 
error(){
	echo $2 >&2
	exit $1
}

if [ $# -eq 0 ];then
    print_help
elif [ $# -eq 1 ];then
    if [ x"$1" = x"-h" ]; then
        print_help
    else
        operator="$1"
        if [[ $operator =~ ^[A-Z][a-zA-Z0-9]* ]];then
            mkdir TMO"$operator" 2>/dev/null
            if [ $? -ne 0 ];then
                error 1 "Operator $operator already exist"
            fi
            cp -r TMOYourOperatorNameLinux/* TMO"$operator"
            mv TMO"$operator"/TMOYourOperatorName.cpp TMO"$operator"/TMO"$operator".cpp
            mv TMO"$operator"/TMOYourOperatorName.h TMO"$operator"/TMO"$operator".h
            sed -i "s/YourOperatorName/$operator/g; s/yourOperator/${operator,}/g" TMO"$operator"/*
            sed -i "s/#\{0,1\}add_subdirectory(TMOYourOperatorNameLinux\/)/add_subdirectory(TMO$operator\/)\n&/" CMakeLists.txt
        
            echo "Created new operator in dir TMO$operator"
        else
            error 4 "Operator $operator is not valid, must be valid c++ identifier and first letter uppercase"
        fi
    fi
elif [ $# -eq 3 ] && [ x"$1" = x"-u" ];then 
    oldOperator="$2"
    newOperator="$3"
    if [[ $newOperator =~ ^[A-Z][a-zA-Z0-9]* ]];then
        if [ -d "TMO$newOperator" ]; then
            error 1 "Operator $newOperator already exist"
        fi
        if [ ! -d "TMO$oldOperator" ]; then
            error 1 "Operator $oldOperator does not exist"
        fi
        mv "TMO$oldOperator" "TMO$newOperator"
        mv TMO"$newOperator"/TMO"$oldOperator".cpp TMO"$newOperator"/TMO"$newOperator".cpp
        mv TMO"$newOperator"/TMO"$oldOperator".h TMO"$newOperator"/TMO"$newOperator".h
        sed -i "s/$oldOperator/$newOperator/g; s/${oldOperator,}/${newOperator,}/g" TMO"$newOperator"/* 
        sed -i "s/add_subdirectory(TMO$oldOperator/add_subdirectory(TMO$newOperator/g" CMakeLists.txt
    
        echo "Moved operator from TMO$oldOperator to TMO$newOperator"
    else  
        error 4 "Operator $newOperator is not valid, must be valid c++ identifier and first letter uppercase"
    fi
else
    error 3 "Wrong parameters"
fi

exit 0