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|
use std::io::Write;
use ansi_term::Style;
use box_drawing;
use console::strip_ansi_codes;
use unicode_segmentation::UnicodeSegmentation;
/// Write text to stream, surrounded by a box, leaving the cursor just
/// beyond the bottom right corner.
pub fn write_boxed(
writer: &mut Write,
text: &str,
_line_width: usize, // ignored
line_style: Style,
heavy: bool,
) -> std::io::Result<()> {
let up_left = if heavy {
box_drawing::heavy::UP_LEFT
} else {
box_drawing::light::UP_LEFT
};
let box_width = strip_ansi_codes(text).graphemes(true).count() + 1;
write_boxed_partial(writer, text, box_width, line_style, heavy)?;
write!(writer, "{}", line_style.paint(up_left))?;
Ok(())
}
/// Write text to stream, surrounded by a box, and extend a line from
/// the bottom right corner.
pub fn write_boxed_with_line(
writer: &mut Write,
text: &str,
line_width: usize,
line_style: Style,
heavy: bool,
) -> std::io::Result<()> {
let box_width = strip_ansi_codes(text).graphemes(true).count() + 1;
write_boxed_with_horizontal_whisker(writer, text, box_width, line_style, heavy)?;
write_horizontal_line(writer, line_width - box_width - 1, line_style, heavy)?;
Ok(())
}
pub fn write_underlined(
writer: &mut Write,
text: &str,
line_width: usize,
line_style: Style,
heavy: bool,
) -> std::io::Result<()> {
writeln!(writer, "{}", text)?;
write_horizontal_line(writer, line_width, line_style, heavy)?;
Ok(())
}
fn write_horizontal_line(
writer: &mut Write,
line_width: usize,
line_style: Style,
heavy: bool,
) -> std::io::Result<()> {
let horizontal = if heavy {
box_drawing::heavy::HORIZONTAL
} else {
box_drawing::light::HORIZONTAL
};
write!(
writer,
"{}",
line_style.paint(horizontal.repeat(line_width),)
)
}
pub fn write_boxed_with_horizontal_whisker(
writer: &mut Write,
text: &str,
box_width: usize,
line_style: Style,
heavy: bool,
) -> std::io::Result<()> {
let up_horizontal = if heavy {
box_drawing::heavy::UP_HORIZONTAL
} else {
box_drawing::light::UP_HORIZONTAL
};
write_boxed_partial(writer, text, box_width, line_style, heavy)?;
write!(writer, "{}", line_style.paint(up_horizontal))?;
Ok(())
}
fn write_boxed_partial(
writer: &mut Write,
text: &str,
box_width: usize,
line_style: Style,
heavy: bool,
) -> std::io::Result<()> {
let horizontal = if heavy {
box_drawing::heavy::HORIZONTAL
} else {
box_drawing::light::HORIZONTAL
};
let down_left = if heavy {
box_drawing::heavy::DOWN_LEFT
} else {
box_drawing::light::DOWN_LEFT
};
let vertical = if heavy {
box_drawing::heavy::VERTICAL
} else {
box_drawing::light::VERTICAL
};
let horizontal_edge = horizontal.repeat(box_width);
write!(
writer,
"{}{}\n{} {}\n{}",
line_style.paint(&horizontal_edge),
line_style.paint(down_left),
text,
line_style.paint(vertical),
line_style.paint(&horizontal_edge),
)
}
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