ascii-art

package main

import (
    "bufio"
    "fmt"
    "os"
    "strings"
)

func main() {
    inputString := os.Args[1]                         // string
    finalString := ""                                 // to be printed out line-by-line
    slicedString := strings.Split(inputString, "\\n") // slicing words to handle \n

    for j, words := range slicedString { // going through every word in slice
        if words == "" && j != 0 {
            fmt.Println()
        } else if words != "" {
            for i := 0; i < 8; i++ { // printing out 8 lines
                finalString = characterReader(words, i) // returns one row that includes first line of every char
                fmt.Print(finalString)
            }
        }
    }
}

func characterReader(lause string, i int) string { // function to find row index, join that row for every char and return it
    var line string
    var finalLine string

    for j := 0; j < len(lause); j++ { // looping a row of every char in lause
        char := lause[j]
        index := 2 + (9 * (int(char) - 32)) + i // finding starting row

        file, err := os.Open("standard.txt")
        if err != nil {
            panic(err)
        }

        reader := bufio.NewReader(file)
        // loop font file to find right row to print
        for firstLine := 1; firstLine <= index; firstLine++ {
            line, err = reader.ReadString('\n')
            if err != nil {
                break
            }
            if firstLine == index { // adding lines together
                if j == len(lause)-1 { // keeping \n if its a last char in lause
                    finalLine = finalLine + line
                } else { // removing newlines to keep row in one line
                    finalLine = finalLine + strings.TrimRight(line, "\n")
                }
            }
        }
        file.Close()
    }
    return finalLine
}