feat: add binary state machine

Author: hhirsch

example.txt

@@ -0,0 +1,57 @@
+FUNCTION_BLOCK "FB_Messages"
+{ S7_Optimized_Access := 'TRUE' }
+VERSION : 0.1
+   VAR_INPUT 
+      errorActive : Bool;
+      warningActive : Bool;
+   END_VAR
+
+   VAR 
+      ALM_Error {InstructionName := 'Program_Alarm'; LibVersion := '1.0'} : Program_Alarm;
+      ALM_Warning {InstructionName := 'Program_Alarm'; LibVersion := '1.0'} : Program_Alarm;
+      instance { S7_SetPoint := 'True'} : String[30] := 'Ruehrer F1 Sicherung';
+      bmk { S7_SetPoint := 'True'} : String[10] := 'B1';
+      "counter" : UInt;
+      acknowledgeAlarms : Bool;
+      test : UInt;
+   END_VAR
+
+   VAR_TEMP 
+      messageTextIdx : UInt;
+      source : String[10];
+      ackAlarmsError : Bool;
+      ackAlarmsStatus : Word;
+   END_VAR
+
+
+BEGIN
+	
+	#messageTextIdx := "MSG_TEST_ERROR";
+	#source := 'B1';
+	#ALM_Error(SIG := #errorActive,
+	           SD_1 := #instance,
+	           SD_2 := #bmk,
+	           SD_3 := #messageTextIdx,
+	           SD_4 := #source);
+	
+	#messageTextIdx := "MSG_TEST_WARNING";
+	#ALM_Warning(SIG := #warningActive,
+	           SD_1 := #instance,
+	           SD_2 := #bmk,
+	           SD_3 := #messageTextIdx,
+	           SD_4 := #source);
+	
+	
+	IF #acknowledgeAlarms THEN
+	    #acknowledgeAlarms := FALSE;
+	    
+	    Ack_Alarms(MODE := 1,
+	               ERROR=>#ackAlarmsError,
+	               STATUS => #ackAlarmsStatus);
+	
+	END_IF;
+	
+	
+	
+	#counter := #counter + 1;
+END_FUNCTION_BLOCK

go.mod

@@ -0,0 +1,3 @@
+module github.com/hhirsch/sps-buddy
+
+go 1.23.1

main.go

@@ -0,0 +1,55 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+	"strings"
+)
+
+var arguments []string = os.Args
+var parserIsInsideVariableBlock bool = false
+
+func handleLine(input string) {
+	inputWithoutWhiteSpaces := strings.ReplaceAll(input, " ", "")
+	if parserIsInsideVariableBlock {
+
+	}
+
+	if inputWithoutWhiteSpaces == "VAR_INPUT" ||
+		inputWithoutWhiteSpaces == "VAR" ||
+		inputWithoutWhiteSpaces == "VAR_TEMP" {
+		parserIsInsideVariableBlock = true
+		return
+	}
+
+	if inputWithoutWhiteSpaces == "END_VAR" {
+		parserIsInsideVariableBlock = false
+	}
+	return
+}
+
+func main() {
+	if len(arguments) < 2 {
+		fmt.Printf("Command needs an argument.\n")
+		os.Exit(1)
+	}
+	var fileName string = arguments[1]
+	file, err := os.Open(fileName)
+	if err != nil {
+		fmt.Printf("Error reading file: %s.\n", err.Error())
+	}
+
+	scanner := bufio.NewScanner(file)
+	for scanner.Scan() {
+		line := scanner.Text()
+		handleLine(line)
+	}
+
+	if err := scanner.Err(); err != nil {
+		fmt.Printf("Error scanning file: %s.\n", err.Error())
+	}
+
+	file.Close()
+	os.Exit(0)
+}