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javascriptcomputer-science

In Javascript, when I separate the strings, how should I run the method for each string after the split?

function processPathLettersIntoArray(source){
    source = source.split("M").join(";M");
    source = source.split("L").join(";L");
    source = source.split("z").join(";z");
    source = source.split(";");
    source = source.slice(1);
    return source.map(mapGroup);
}

This is my split method.

function gcodeXY(source){
   var [xVal, yVal] = source.split(",");
   return `X${xVal} Y${yVal}`
}
let start="X0 Y0"; //another side effect :-(

function mapGroup(grp){
    let s=grp.split(" ");
    if (s[0]=="M"){
        start=gcodeXY(s[1]);
        last=s[1];
        return "G0 F200 "+start;
    }
    else if (s[0]=="L"){
        start=gcodeXY(s[1]);
        last=s[1];
        return "G1 F100 "+start;
    }
    else if (s[0]=="z"){
        last=s[1];
        return "G1 F100 "+start;
    }
    return grp;
}

This is how I want each string to be achieved after splitting.

function path2gcode(source){
    source = processPathLettersIntoArray(source);
    return source;
}

This is the method I need to run. What I want ask is that in Javascript, when I separate the strings, how should I run the method for each string after the split?The picture shows the input and output examples and my current output.enter image description here

enter image description here

Solution

  • This will work

    function processPathLettersIntoArray(source) {
  const result = source.replace(/M/g, ";M").replace(/L/g, ";L").replace(/z/g, ";z").split(';').slice(1);
  return result.map(mapGroup);
}

function gcodeXY(source) {
   const [xVal, yVal] = source.split(",");
   return `X${xVal} Y${yVal}`;
}
let start="X0 Y0"; //another side effect :-(

function mapGroup(grp) {
    let s = grp.split(" ");
    if (s[0]=="M"){
        start = gcodeXY(s[1]);
        last=s[1];
        return "G0 F200 "+start;
    }
    else if (s[0]=="L"){
        start=gcodeXY(s[1]);
        last=s[1];
        return "G1 F100 "+start;
    }
    else if (s[0]=="z"){
        last=s[1];
        return "G1 F100 "+start;
    }
    return grp;
}

function path2gcode() {
  const source = 'M 1,2 L 2,2 L 3,3 z';
  return processPathLettersIntoArray(source);
}