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pub struct Table {
items: Vec<String>,
line: Vec<Vec<String>>,
length: Vec<usize>,
padding: usize,
}
impl Table {
/// Create a new Table
pub fn new(items: Vec<impl Into<String>>) -> Self {
Self::new_with_padding(items, 2)
}
/// Create a new Table with padding
pub fn new_with_padding(items: Vec<impl Into<String>>, padding: usize) -> Self {
let items: Vec<String> = items.into_iter().map(|v| v.into()).collect();
let mut length = Vec::with_capacity(items.len());
for item in &items {
length.push(display_width(item));
}
Table {
items,
padding,
line: Vec::new(),
length,
}
}
/// Push a new row of items to the table
pub fn push_item(&mut self, items: Vec<impl Into<String>>) {
let items: Vec<String> = items.into_iter().map(|v| v.into()).collect();
let mut processed_items = Vec::with_capacity(self.items.len());
for i in 0..self.items.len() {
if i < items.len() {
processed_items.push(items[i].clone());
} else {
processed_items.push(String::new());
}
}
for (i, d) in processed_items.iter().enumerate() {
let d_len = display_width(d);
if d_len > self.length[i] {
self.length[i] = d_len;
}
}
self.line.push(processed_items);
}
/// Insert a new row of items at the specified index
pub fn insert_item(&mut self, index: usize, items: Vec<impl Into<String>>) {
let items: Vec<String> = items.into_iter().map(|v| v.into()).collect();
let mut processed_items = Vec::with_capacity(self.items.len());
for i in 0..self.items.len() {
if i < items.len() {
processed_items.push(items[i].clone());
} else {
processed_items.push(String::new());
}
}
for (i, d) in processed_items.iter().enumerate() {
let d_len = display_width(d);
if d_len > self.length[i] {
self.length[i] = d_len;
}
}
self.line.insert(index, processed_items);
}
/// Get the current maximum column widths
fn get_column_widths(&self) -> &[usize] {
&self.length
}
}
impl std::fmt::Display for Table {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
let column_widths = self.get_column_widths();
// Build the header row
let header: Vec<String> = self
.items
.iter()
.enumerate()
.map(|(i, item)| {
let target_width = column_widths[i] + self.padding;
let current_width = display_width(item);
let space_count = target_width - current_width;
let space = " ".repeat(space_count);
let result = format!("{}{}", item, space);
result
})
.collect();
writeln!(f, "{}", header.join(""))?;
// Build each data row
for row in &self.line {
let formatted_row: Vec<String> = row
.iter()
.enumerate()
.map(|(i, cell)| {
let target_width = column_widths[i] + self.padding;
let current_width = display_width(cell);
let space_count = target_width - current_width;
let spaces = " ".repeat(space_count);
let result = format!("{}{}", cell, spaces);
result
})
.collect();
writeln!(f, "{}", formatted_row.join(""))?;
}
Ok(())
}
}
pub fn display_width(s: &str) -> usize {
// Filter out ANSI escape sequences before calculating width
let filtered_bytes = strip_ansi_escapes::strip(s);
let filtered_str = match std::str::from_utf8(&filtered_bytes) {
Ok(s) => s,
Err(_) => s, // Fallback to original string if UTF-8 conversion fails
};
let mut width = 0;
for c in filtered_str.chars() {
if c.is_ascii() {
width += 1;
} else {
width += 2;
}
}
width
}
|
