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|
use std::cmp::max;
use std::io::Write;
use crate::ansi;
use crate::cli::Width;
use crate::style::Style;
pub fn write_no_decoration(
writer: &mut dyn Write,
text: &str,
raw_text: &str,
_line_width: &Width, // ignored
text_style: Style,
_decoration_style: ansi_term::Style,
) -> std::io::Result<()> {
if text_style.is_raw {
writeln!(writer, "{}", raw_text)?;
} else {
writeln!(writer, "{}", text_style.paint(text))?;
}
Ok(())
}
/// Write text to stream, surrounded by a box, leaving the cursor just
/// beyond the bottom right corner.
pub fn write_boxed(
writer: &mut dyn Write,
text: &str,
raw_text: &str,
_line_width: &Width, // ignored
text_style: Style,
decoration_style: ansi_term::Style,
) -> std::io::Result<()> {
let up_left = if decoration_style.is_bold {
box_drawing::heavy::UP_LEFT
} else {
box_drawing::light::UP_LEFT
};
let box_width = ansi::measure_text_width(text);
write_boxed_partial(
writer,
text,
raw_text,
box_width,
text_style,
decoration_style,
)?;
writeln!(writer, "{}", decoration_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_underline(
writer: &mut dyn Write,
text: &str,
raw_text: &str,
line_width: &Width,
text_style: Style,
decoration_style: ansi_term::Style,
) -> std::io::Result<()> {
let box_width = ansi::measure_text_width(text);
write_boxed_with_horizontal_whisker(
writer,
text,
raw_text,
box_width,
text_style,
decoration_style,
)?;
let line_width = match *line_width {
Width::Fixed(n) => n,
Width::Variable => box_width,
};
write_horizontal_line(
writer,
if line_width > box_width {
line_width - box_width - 1
} else {
0
},
text_style,
decoration_style,
)?;
writeln!(writer)?;
Ok(())
}
enum UnderOverline {
Under,
Over,
Underover,
}
pub fn write_underlined(
writer: &mut dyn Write,
text: &str,
raw_text: &str,
line_width: &Width,
text_style: Style,
decoration_style: ansi_term::Style,
) -> std::io::Result<()> {
_write_under_or_over_lined(
UnderOverline::Under,
writer,
text,
raw_text,
line_width,
text_style,
decoration_style,
)
}
pub fn write_overlined(
writer: &mut dyn Write,
text: &str,
raw_text: &str,
line_width: &Width,
text_style: Style,
decoration_style: ansi_term::Style,
) -> std::io::Result<()> {
_write_under_or_over_lined(
UnderOverline::Over,
writer,
text,
raw_text,
line_width,
text_style,
decoration_style,
)
}
pub fn write_underoverlined(
writer: &mut dyn Write,
text: &str,
raw_text: &str,
line_width: &Width,
text_style: Style,
decoration_style: ansi_term::Style,
) -> std::io::Result<()> {
_write_under_or_over_lined(
UnderOverline::Underover,
writer,
text,
raw_text,
line_width,
text_style,
decoration_style,
)
}
fn _write_under_or_over_lined(
underoverline: UnderOverline,
writer: &mut dyn Write,
text: &str,
raw_text: &str,
line_width: &Width,
text_style: Style,
decoration_style: ansi_term::Style,
) -> std::io::Result<()> {
let text_width = ansi::measure_text_width(text);
let line_width = match *line_width {
Width::Fixed(n) => max(n, text_width),
Width::Variable => text_width,
};
let mut write_line: Box<dyn FnMut(&mut dyn Write) -> std::io::Result<()>> =
Box::new(|writer| {
write_horizontal_line(writer, line_width, text_style, decoration_style)?;
writeln!(writer)?;
Ok(())
});
match underoverline {
UnderOverline::Under => {}
_ => write_line(writer)?,
}
if text_style.is_raw {
writeln!(writer, "{}", raw_text)?;
} else {
writeln!(writer, "{}", text_style.paint(text))?;
}
match underoverline {
UnderOverline::Over => {}
_ => write_line(writer)?,
}
Ok(())
}
fn write_horizontal_line(
writer: &mut dyn Write,
width: usize,
_text_style: Style,
decoration_style: ansi_term::Style,
) -> std::io::Result<()> {
let horizontal = if decoration_style.is_bold {
box_drawing::heavy::HORIZONTAL
} else {
box_drawing::light::HORIZONTAL
};
write!(
writer,
"{}",
decoration_style.paint(horizontal.repeat(width))
)
}
fn write_boxed_with_horizontal_whisker(
writer: &mut dyn Write,
text: &str,
raw_text: &str,
box_width: usize,
text_style: Style,
decoration_style: ansi_term::Style,
) -> std::io::Result<()> {
let up_horizontal = if decoration_style.is_bold {
box_drawing::heavy::UP_HORIZONTAL
} else {
box_drawing::light::UP_HORIZONTAL
};
write_boxed_partial(
writer,
text,
raw_text,
box_width,
text_style,
decoration_style,
)?;
write!(writer, "{}", decoration_style.paint(up_horizontal))?;
Ok(())
}
fn write_boxed_partial(
writer: &mut dyn Write,
text: &str,
raw_text: &str,
box_width: usize,
text_style: Style,
decoration_style: ansi_term::Style,
) -> std::io::Result<()> {
let (horizontal, down_left, vertical) = if decoration_style.is_bold {
(
box_drawing::heavy::HORIZONTAL,
box_drawing::heavy::DOWN_LEFT,
box_drawing::heavy::VERTICAL,
)
} else {
(
box_drawing::light::HORIZONTAL,
box_drawing::light::DOWN_LEFT,
box_drawing::light::VERTICAL,
)
};
let horizontal_edge = horizontal.repeat(box_width);
writeln!(
writer,
"{}{}",
decoration_style.paint(&horizontal_edge),
decoration_style.paint(down_left),
)?;
if text_style.is_raw {
write!(writer, "{}", raw_text)?;
} else {
write!(writer, "{}", text_style.paint(text))?;
}
write!(
writer,
"{}\n{}",
decoration_style.paint(vertical),
decoration_style.paint(&horizontal_edge),
)
}
|
