arnekeller/ascii-table
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Configurable line drawing + header alignment

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This commit is contained in:
Arne Keller 2021-03-26 11:15:51 +01:00
parent 9fb258f9be
commit 7fffb5d93b
1 changed files with 27 additions and 9 deletions
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26
src/lib.rs
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@ -79,6 +79,7 @@ const DEFAULT_COLUMN: Column = Column {
#[derive(Clone, Debug, Eq, PartialEq)]
pub struct AsciiTable {
pub max_width: usize,
pub draw_lines: bool,
pub columns: BTreeMap<usize, Column>
}
@ -87,6 +88,7 @@ impl Default for AsciiTable {
fn default() -> Self {
Self {
max_width: 80,
draw_lines: true,
columns: BTreeMap::new()
}
}
@ -157,15 +159,23 @@ impl AsciiTable {
let widths = self.column_widths(&header, &data, num_cols);
let mut result = String::new();
if self.draw_lines {
result.push_str(&self.format_first(&widths));
}
if has_header {
result.push_str(&self.format_header_row(&header, &widths));
result.push_str(&self.format_header_row(&header, &widths, &(0..num_cols).map(|a|
self.columns.get(&a).map(|x| x.align).unwrap_or(Align::Left)
).collect::<Vec<_>>()));
if self.draw_lines {
result.push_str(&self.format_middle(&widths));
}
}
for row in data {
result.push_str(&self.format_row(&row, &widths));
}
if self.draw_lines {
result.push_str(&self.format_last(&widths));
}
result
}
@ -269,14 +279,22 @@ impl AsciiTable {
let conf = self.columns.get(&a).unwrap_or(default_conf);
self.format_cell(cell, width, ' ', conf.align)
}).collect();
if self.draw_lines {
self.format_line(&row, &format!("{}{}", NS, ' '), &format!("{}{}{}", ' ', NS, ' '), &format!("{}{}", ' ', NS))
} else {
self.format_line(&row, "", " ", "")
}
}
fn format_header_row(&self, row: &[SmartString], widths: &[usize]) -> String {
let row: Vec<_> = row.iter().zip(widths.iter()).map(|(cell, &width)|
self.format_cell(cell, width, ' ', Align::Left)
fn format_header_row(&self, row: &[SmartString], widths: &[usize], aligns: &[Align]) -> String {
let row: Vec<_> = row.iter().zip(widths.iter()).zip(aligns.iter()).map(|((cell, &width), &align)|
self.format_cell(cell, width, ' ', align)
).collect();
if self.draw_lines {
self.format_line(&row, &format!("{}{}", NS, ' '), &format!("{}{}{}", ' ', NS, ' '), &format!("{}{}", ' ', NS))
} else {
self.format_line(&row, "", " ", "")
}
}
fn format_last(&self, widths: &[usize]) -> String {