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mod content;
mod rendering;
mod style;
use content::{KeyValueLine, Line, TextLine};
use rendering::BorderPainter;
pub use style::{HeaderLevel, Style};
pub struct Banner<'a> {
pub width: u8,
style: &'a Style,
lines: Vec<Box<dyn Line + 'a>>,
}
impl<'a> Banner<'a> {
pub fn new(style: &'a Style) -> Banner<'a> {
return Banner {
width: 50,
style: style,
lines: Vec::new(),
};
}
pub fn add_header<'b>(&'b mut self, text: &'a str, level: HeaderLevel) {
let line = TextLine::new(text, &self.style.header_style(&level));
self.lines.push(Box::new(line));
}
pub fn add_text<'b>(&'b mut self, text: &'a str) {
let line = TextLine::new(text, &self.style.text);
self.lines.push(Box::new(line));
}
pub fn add_key_value<'b>(&'b mut self, key: &'a str, value: &'a str) {
let line = KeyValueLine::new(key, value, &self.style.text);
self.lines.push(Box::new(line));
}
#[allow(dead_code)]
fn print(self: &Banner<'a>) {
println!("{}", self.assemble());
}
pub fn assemble(self: &Banner<'a>) -> String {
let border_painter: BorderPainter =
BorderPainter::new(&self.style.border, self.style.no_color_codes, self.width);
let mut result: String;
result = format!("{}\r\n", border_painter.top());
for line in self.lines.iter() {
let l = &(*line).fmt(self.style.no_color_codes);
result.push_str(&border_painter.left());
result.push_str(&format!("{}", l)[..]);
result.push_str(&format!(
"{}",
(l.len() + 1..self.width as usize - 1)
.map(|_| " ")
.collect::<String>()
));
result.push_str(&border_painter.right());
}
result.push_str(&format!("{}\r\n", border_painter.bottom())[..]);
result
}
}
#[cfg(test)]
mod tests {
use super::style::Color;
use super::*;
#[test]
fn test_assemble_empty_no_color_codes() {
let mut style: Style = Style::new();
style.no_color_codes = true;
let mut banner: Banner = Banner::new(&style);
banner.width = 4;
assert_eq!("┌──┐\r\n└──┘\r\n", banner.assemble());
}
#[test]
fn test_assemble_banner_no_color_codes() {
let mut style: Style = Style::new();
style.no_color_codes = true;
let mut banner: Banner = Banner::new(&style);
banner.width = 12;
banner.add_header("Header h1", HeaderLevel::H1);
banner.add_header("Header h2", HeaderLevel::H2);
banner.add_header("Header h3", HeaderLevel::H3);
banner.add_text("Text");
banner.add_key_value("Key", "Val");
let expected = "┌──────────┐\r\n│Header h1 ││Header h2 ││Header h3 ││Text ││Key: Val │└──────────┘\r\n";
assert_eq!(expected, banner.assemble());
}
#[test]
fn test_assemble_empty() {
let mut style: Style = Style::new();
style.border.color = Color::White;
let mut banner: Banner = Banner::new(&style);
banner.width = 4;
let expected = "\u{1b}[37m┌──┐\u{1b}[0m\r\n\u{1b}[37m└──┘\u{1b}[0m\r\n";
assert_eq!(expected, banner.assemble());
}
#[test]
fn test_assemble_simple() {
let mut style: Style = Style::new();
style.no_color_codes = true;
let mut banner: Banner = Banner::new(&style);
banner.width = 16;
banner.add_text("Hello!");
let expected = "┌──────────────┐\r\n│Hello! │└──────────────┘\r\n";
assert_eq!(expected, banner.assemble());
}
#[test]
fn test_assemble_simple_colored() {
let mut style: Style = Style::new();
style.border.color = Color::White;
style.text.content_color = Color::Red;
let mut banner: Banner = Banner::new(&style);
banner.width = 16;
banner.add_text("Hello, ");
banner.add_text("World!");
let expected = "\u{1b}[37m┌──────────────┐\u{1b}[0m\r\n\u{1b}[37m│\u{1b}[0m\u{1b}[31mHello, \u{1b}[0m\u{1b}[37m│\u{1b}[0m\u{1b}[37m│\u{1b}[0m\u{1b}[31mWorld!\u{1b}[0m\u{1b}[37m│\u{1b}[0m\u{1b}[37m└──────────────┘\u{1b}[0m\r\n";
assert_eq!(expected, banner.assemble());
}
}