define-cli/main.go

package main

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

func main() {
	var userword string
	if len(os.Args) < 1 {
		reader := bufio.NewReader(os.Stdin)
		fmt.Println("Please enter the word you wish to define:\n")
		userword, _ = reader.ReadString('\n')
	} else {
		userword = os.Args[1]
	}

	file, err := os.Open("dictionary.txt")
	if err != nil {
		fmt.Println("Error! Dictionary file not opening!")
	}
	defer file.Close()
	scanner := bufio.NewScanner(file)
	itis := false
	for scanner.Scan() {
		//fmt.Println(scanner.Text())
		definition := strings.Split(scanner.Text(), " ")
		ifso, _ := CompareStrings(definition[0], userword)
		if ifso {
			fmt.Println(scanner.Text())
			itis = true
		} 

	}
	if !(itis) {
		fmt.Println("No definition found")
	}
	if err := scanner.Err(); err != nil {
		fmt.Println(err)
	}
}

func CompareStrings(stringA, stringB string) (bool, error) {
   if strings.EqualFold(stringA, stringB) {
      return true, nil
   } else {
      return false, nil
   }
}