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|
use crate::{
grid::records::{Records, RecordsMut},
settings::TableOption,
};
/// Set a tab size.
///
/// The size is used in order to calculate width correctly.
///
/// Default value is 4 (basically 1 '\t' equals 4 spaces).
///
/// IMPORTANT: The tab character might be not present in output,
/// it might be replaced by spaces.
///
/// # Example
///
/// ```
/// use tabled::{Table, settings::formatting::TabSize};
///
/// let text = "Some\ttext\t\twith \\tabs";
///
/// let mut table = Table::new([text]);
/// table.with(TabSize::new(4));
///
/// assert_eq!(
/// table.to_string(),
/// "+--------------------------------+\n\
/// | &str |\n\
/// +--------------------------------+\n\
/// | Some text with \\tabs |\n\
/// +--------------------------------+"
/// )
/// ```
#[derive(Debug, Default, Clone)]
pub struct TabSize(usize);
impl TabSize {
/// Creates new [`TabSize`] object.
pub fn new(size: usize) -> Self {
Self(size)
}
}
impl<R, D, C> TableOption<R, D, C> for TabSize
where
for<'a> &'a R: Records,
R: RecordsMut<String>,
{
fn change(self, records: &mut R, _: &mut C, _: &mut D) {
let mut list = vec![];
for (row, cells) in records.iter_rows().into_iter().enumerate() {
for (col, text) in cells.into_iter().enumerate() {
let text = text.as_ref().replace('\t', &" ".repeat(self.0));
list.push(((row, col), text));
}
}
for (pos, text) in list {
records.set(pos, text);
}
}
}
|
