// https://forum.arduino.cc/t/text-justification-for-display/1404815

//                           1    1    2    2    3    3    4    4    5    5    6    6    7    7    8
//       position: 0....5....0....5....0....5....0....5....0....5....0....5....0....5....0....5....0
char sentence[] = "The quick brown fox jumps over a lazy dog. Never gonna give you up! 0123456789";

/*          1    1    2     2
   1...5....0....5....0.....6
   The quick brown fox jumps[25 crlf]
   over a lazy dogs. Never[48 crlf]
   gonna give you up![67 crlf]
   0123456789[77 crlf or nul]
*/

const int sentencelength = sizeof(sentence) / sizeof(sentence[0]);
const int chars[sentencelength];
int whitespaceDetected, whitespaceInside, characterwidth = 26, linenumber;
enum justification {left, right, center};

void setup() {
  Serial.begin(115200);
  align(left); // left, right, center, justify
}

void align(int just) {
  for (int position = 0; position < sentencelength; position++) { // read sentence
    if (sentence[position] == ' ') { // if the character is whitespace...
      whitespaceDetected = position; // ... store this whitespace position
      if ((position - (linenumber * characterwidth)) < characterwidth) { // ... and position is within width...
        Serial.print(sentence[position]); // print the whitespace and...
        whitespaceInside = position; // ... store this whitespace position
      } else { // if whitespace is at or outside screen width...
        linenumber++; // increase line for (x,y) screens
        Serial.println(); // CRLF for serial monitor
        for (int i = whitespaceInside + 1; i < position + 1; i++) { // print starting last whitespace to current index
          Serial.print(sentence[i]); // reprint overlap word
        }
      }
    } else if ((position - (linenumber * characterwidth)) < characterwidth) {
      Serial.print(sentence[position]); // print non-whitespace character
    }
  }
}

void loop() {
}