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src/main.rs

/* main.rs */

mod coalcar;
mod d51;
mod jack;

use d51::*;

fn main() {
    draw_d51();
    jack::draw_jack();
    coalcar::draw_coalcar();
} // end of main()

fn convert_to_vecvecstring(image_str: &str) -> Vec<Vec<String>> {
    /*
     * This is bad coding - we're *assuming* the &str to be ASCII-sized
     * chars; include a non-ASCII character, like '汉', in your drawing,
     * where a string operation tries to access it, like as the first
     * character of the image's const declaration
     * (pub const D51: &str = r"汉),
     * and watch your program go BOOM!
     */
    //The first character in the string is a newline; lose it.
    let image_str = &image_str[1..image_str.len()];

    // Create new blank vector of vector of Strings.
    let mut outer_vec: Vec<Vec<String>> = Vec::new();

    // This keeps track of which frame/inner vector we're processing.
    let mut inner_vec_num: usize = 0;

    // Create first inner vector in the outer vector.
    outer_vec.push(Vec::new());

    for each_line in image_str.lines() {
        if each_line != "" {
            // Remove single-quote mark at end of each line, if it exists..
            let each_line = if &each_line[each_line.len() - 1..] == "'" {
                each_line[0..each_line.len() - 1].to_string()
            } else {
                each_line.to_string()
            };
            // Then add the string to the current inner vector.
            outer_vec[inner_vec_num].push(each_line);
        } else {
            outer_vec.push(Vec::new());
            inner_vec_num += 1;
        }
    }
    return outer_vec; // We're returning the entire vector of String vectors.
} // end of convert_to_vecvecstring()

src/d51.rs



  
    
    
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src/main.rs
/* main.rs */

mod coalcar;
mod d51;
mod jack;

use d51::*;

fn main() {
    draw_d51();
    jack::draw_jack();
    coalcar::draw_coalcar();
} // end of main()

fn convert_to_vecvecstring(image_str: &str) -> Vec<Vec<String>> {
    /*
     * This is bad coding - we're *assuming* the &str to be ASCII-sized
     * chars; include a non-ASCII character, like '汉', in your drawing,
     * where a string operation tries to access it, like as the first
     * character of the image's const declaration
     * (pub const D51: &str = r"汉),
     * and watch your program go BOOM!
     */
    //The first character in the string is a newline; lose it.
    let image_str = &image_str[1..image_str.len()];

    // Create new blank vector of vector of Strings.
    let mut outer_vec: Vec<Vec<String>> = Vec::new();

    // This keeps track of which frame/inner vector we're processing.
    let mut inner_vec_num: usize = 0;

    // Create first inner vector in the outer vector.
    outer_vec.push(Vec::new());

    for each_line in image_str.lines() {
        if each_line != "" {
            // Remove single-quote mark at end of each line, if it exists..
            let each_line = if &each_line[each_line.len() - 1..] == "'" {
                each_line[0..each_line.len() - 1].to_string()
            } else {
                each_line.to_string()
            };
            // Then add the string to the current inner vector.
            outer_vec[inner_vec_num].push(each_line);
        } else {
            outer_vec.push(Vec::new());
            inner_vec_num += 1;
        }
    }
    return outer_vec; // We're returning the entire vector of String vectors.
} // end of convert_to_vecvecstring()



    Notice that in the "jack.rs" and "coalcar.rs" files I'm using a use crate::*; line, whereas in the "d51.rs" file I'm just putting that path where it's needed within the code. Either method is acceptable, but it's probably best to do things in a consistent manner throughout a project. I've only done it this inconsistent way to demonstrate both methods.
    

src/d51.rs
/* d51.rs */

pub fn draw_d51() {
    // Convert const into a vector of String vectors.
    let image_vecvecstring = crate::convert_to_vecvecstring(D51);

    for each_inner_vec in image_vecvecstring {
        for each_line in &each_inner_vec {
            println!("{}", each_line);
        }
    }
} // end of draw_d51()

pub const D51: &str = r"
      ====        ________                ___________'
  _D _|  |_______/        \__I_I_____===__|_________|'
   |(_)---  |   H\________/ |   |        =|___ ___|  '
   /     |  |   H  |  |     |   |         ||_| |_||  '
  |      |  |   H  |__--------------------| [___] |  '
  | ________|___H__/__|_____/[][]~\_______|       |  '
  |/ |   |-----------I_____I [][] []  D   |=======|__'
__/ =| o |=-~~\  /~~\  /~~\  /~~\ ____Y___________|__'
 |/-=|___|=    ||    ||    ||    |_____/~\___/       '
  \_/      \O=====O=====O=====O_/      \_/           '

      ====        ________                ___________'
  _D _|  |_______/        \__I_I_____===__|_________|'
   |(_)---  |   H\________/ |   |        =|___ ___|  '
   /     |  |   H  |  |     |   |         ||_| |_||  '
  |      |  |   H  |__--------------------| [___] |  '
  | ________|___H__/__|_____/[][]~\_______|       |  '
  |/ |   |-----------I_____I [][] []  D   |=======|__'
__/ =| o |=-~~\  /~~\  /~~\  /~~\ ____Y___________|__'
 |/-=|___|=O=====O=====O=====O   |_____/~\___/       '
  \_/      \__/  \__/  \__/  \__/      \_/           '

      ====        ________                ___________'
  _D _|  |_______/        \__I_I_____===__|_________|'
   |(_)---  |   H\________/ |   |        =|___ ___|  '
   /     |  |   H  |  |     |   |         ||_| |_||  '
  |      |  |   H  |__--------------------| [___] |  '
  | ________|___H__/__|_____/[][]~\_______|       |  '
  |/ |   |-----------I_____I [][] []  D   |=======|__'
__/ =| o |=-O=====O=====O=====O \ ____Y___________|__'
 |/-=|___|=    ||    ||    ||    |_____/~\___/       '
  \_/      \__/  \__/  \__/  \__/      \_/           '

      ====        ________                ___________'
  _D _|  |_______/        \__I_I_____===__|_________|'
   |(_)---  |   H\________/ |   |        =|___ ___|  '
   /     |  |   H  |  |     |   |         ||_| |_||  '
  |      |  |   H  |__--------------------| [___] |  '
  | ________|___H__/__|_____/[][]~\_______|       |  '
  |/ |   |-----------I_____I [][] []  D   |=======|__'
__/ =| o |=-~O=====O=====O=====O\ ____Y___________|__'
 |/-=|___|=    ||    ||    ||    |_____/~\___/       '
  \_/      \__/  \__/  \__/  \__/      \_/           '

      ====        ________                ___________'
  _D _|  |_______/        \__I_I_____===__|_________|'
   |(_)---  |   H\________/ |   |        =|___ ___|  '
   /     |  |   H  |  |     |   |         ||_| |_||  '
  |      |  |   H  |__--------------------| [___] |  '
  | ________|___H__/__|_____/[][]~\_______|       |  '
  |/ |   |-----------I_____I [][] []  D   |=======|__'
__/ =| o |=-~~\  /~~\  /~~\  /~~\ ____Y___________|__'
 |/-=|___|=   O=====O=====O=====O|_____/~\___/       '
  \_/      \__/  \__/  \__/  \__/      \_/           '

      ====        ________                ___________'
  _D _|  |_______/        \__I_I_____===__|_________|'
   |(_)---  |   H\________/ |   |        =|___ ___|  '
   /     |  |   H  |  |     |   |         ||_| |_||  '
  |      |  |   H  |__--------------------| [___] |  '
  | ________|___H__/__|_____/[][]~\_______|       |  '
  |/ |   |-----------I_____I [][] []  D   |=======|__'
__/ =| o |=-~~\  /~~\  /~~\  /~~\ ____Y___________|__'
 |/-=|___|=    ||    ||    ||    |_____/~\___/       '
  \_/      \_O=====O=====O=====O/      \_/           '
";




src/jack.rs
/* jack.rs */

use crate::*;

pub fn draw_jack() {
    // Convert const into a vector of String vectors.
    let image_vecvecstring = convert_to_vecvecstring(JACK);

    for each_inner_vec in image_vecvecstring {
        for each_line in &each_inner_vec {
            println!("{}", each_line);
        }
    }
} // end of draw_jack()

pub const JACK: &str = r"
 \ 0 /   '
  \|/    '
   |     '
  / \    '
_/   \_  '

         '
 __0__   '
/  |  \  '
  / \    '
 _\ /_   '

         '
   o     '
 /\ /\   '
 |/ \|   '
 _\ /_   '

         '
 __0__   '
/  |  \  '
  / \    '
 _\ /_   '
"; // end of JACK





  src/coalcars.rs
  /* coalcar.rs */

use crate::convert_to_vecvecstring;

pub fn draw_coalcar() {
    // Convert const into a vector of String vectors.
    let image_vecvecstring = convert_to_vecvecstring(COALCAR);

    for each_inner_vec in image_vecvecstring {
        for each_line in &each_inner_vec {
            println!("{}", each_line);
        }
    }
} // end of draw_coalcar()

pub const COALCAR: &str = r"
    _________________         
   _|                \_____A  
 =|                        |  
 -|                        |  
__|________________________|_ 
|__________________________|_ 
   |_D__D__D_|  |_D__D__D_|   
    \_/   \_/    \_/   \_/ 
"; // end of COALCAR



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