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mod border;
pub mod row;
pub mod cell;
use std::str::FromStr;
pub use border::Border;
use super::data_item::DataItem;
use cell::Cell;
use row::Row;
use crate::content::{ContentStyle, CellWidth};
#[allow(unused_macros)]
#[macro_export]
macro_rules! table {
( $($style:literal=>$header:literal),*; $($data:literal),* ) => {
table!(
$($style => $header),*;
"{}";
$($data),*
)
};
( $($style:literal=>$header:literal),*;
$($cell_style:literal),*;
$($data:literal),* ) =>
{
Table::from_vec(
crate::row!($($style => $header), *),
&[$(crate::content_style!($cell_style)),*],
&[$($data),*]
)
}
}
#[derive(Debug)]
pub struct Table {
pub border: Border,
column_breaks: Vec<CellWidth>,
column_headers: Row,
row_headers: Vec<Cell>,
data_rows: Vec<Row>
}
impl Table {
#[must_use]
pub fn empty() -> Table {
Table {
border: Border::default(),
column_breaks: Vec::new(),
column_headers: Row::new(),
row_headers: Vec::new(),
data_rows: Vec::new(),
}
}
#[must_use]
pub fn new(
border: Border,
column_breaks: Vec<CellWidth>,
column_headers: Row,
row_headers: Vec<Cell>,
data_rows: Vec<Row>,
) -> Table {
Table {
border,
column_breaks,
column_headers,
row_headers,
data_rows
}
}
#[must_use]
pub fn from_vec(
column_headers: Row,
cell_styles: &[ContentStyle],
data: &[&str]
) -> Table {
let d: Vec<DataItem> =
data.iter().map(|i| DataItem::from_str(i).unwrap())
.collect::<Vec<DataItem>>();
Table::from_data_source(
column_headers,
&cell_styles,
Vec::new(),
d.iter()
)
}
pub fn from_data_source<'a, I>(
column_headers: Row,
cell_styles: &[ContentStyle],
row_headers: Vec<Cell>,
data_source: I,
) -> Table
where
I: Iterator<Item=&'a DataItem>
{
let mut data_rows = Vec::new();
let mut column_breaks: Vec<CellWidth> = Vec::new();
for cell in column_headers.iter() {
column_breaks.push(cell.get_cell_width());
}
let mut row_ix = 0;
data_rows.push(Row::new());
let mut break_ix = 0;
for item in data_source {
if break_ix == column_breaks.len() {
break_ix = 0;
data_rows.push(Row::new());
row_ix += 1;
}
let mut cell_style = &ContentStyle::default();
if cell_styles.len() > break_ix {
cell_style = &cell_styles[break_ix];
}
data_rows[row_ix].add_cell(
Cell::from_data_item(item, cell_style.clone())
);
break_ix += 1;
}
Table::new(
Border::default(),
column_breaks,
column_headers,
row_headers,
data_rows
)
}
#[must_use]
pub fn format(self: &Table) -> String {
let mut result: String = String::from("");
let widths = self.measure_column_widths();
result.push_str(&self.format_header(&widths));
result.push_str(&self.format_body(&widths));
result
}
fn format_header(
self: &Table,
widths: &[usize]
) -> String {
let mut result: String = String::from("");
result.push_str(&self.border.format_top(&widths));
result.push('\n');
result.push_str(
&self.column_headers.format(
&self.border,
&self.column_breaks
)
);
result.push_str(&self.border.format_horizontal_split(&widths));
result.push('\n');
result
}
fn format_body(
self: &Table,
widths: &[usize]
) -> String {
let mut result: String = String::from("");
for row_ix in 0..self.data_rows.len() {
let row = &self.data_rows[row_ix];
result.push_str(
&row.format(
&self.border,
&self.column_breaks
)
);
if row_ix < self.data_rows.len() - 1 {
result.push_str(
&self.border.format_horizontal_split(&widths));
result.push('\n');
}
}
result.push_str(&self.border.format_bottom(&widths));
result.push('\n');
result
}
fn measure_column_widths(
self: &Table
) -> Vec<usize> {
let mut widths = Vec::new();
let content_break = CellWidth::Content;
for (column_break_ix, cell) in self.column_headers.iter().enumerate() {
let column_break: &CellWidth =
if column_break_ix < self.column_breaks.len() {
&self.column_breaks[column_break_ix]
} else {
&content_break
};
widths.push(cell.measure_width(column_break));
}
widths
}
}
#[cfg(test)]
mod tests {
use super::*;
use std::env;
#[test]
fn table_macro_simple_unstyled_body() {
let table = table!(
"{B^:12:}" => "Food", "{G^:7:}" => "Count";
"Fish", "15", "Pizza", "10", "Tomato", "24"
);
let expected =
match env::var("NO_COLOR") {
Ok(_) => "+------------+-------+\n| Food | Count |\n+------------+-------+\n|Fish |15 |\n+------------+-------+\n|Pizza |10 |\n+------------+-------+\n|Tomato |24 |\n+------------+-------+\n",
Err(_) => "+------------+-------+\n|\u{1b}[94m Food \u{1b}[0m|\u{1b}[92m Count \u{1b}[0m|\n+------------+-------+\n|Fish |15 |\n+------------+-------+\n|Pizza |10 |\n+------------+-------+\n|Tomato |24 |\n+------------+-------+\n",
};
assert_eq!(
table.format(),
expected
);
}
#[test]
fn table_macro_simple_styled_body() {
let table = table!(
"{m>:10:}" => "Item", "{m>:10:}" => "Price";
"{c^}", "{g<}";
"Basic", "$5,000", "Super", "$12,000", "Ultimate", "$35,000"
);
let expected =
match env::var("NO_COLOR") {
Ok(_) => "+----------+----------+\n| Item| Price|\n+----------+----------+\n| Basic |$5,000 |\n+----------+----------+\n| Super |$12,000 |\n+----------+----------+\n| Ultimate |$35,000 |\n+----------+----------+\n",
Err(_) => "+----------+----------+\n|\u{1b}[35m Item\u{1b}[0m|\u{1b}[35m Price\u{1b}[0m|\n+----------+----------+\n|\u{1b}[36m Basic \u{1b}[0m|\u{1b}[32m$5,000 \u{1b}[0m|\n+----------+----------+\n|\u{1b}[36m Super \u{1b}[0m|\u{1b}[32m$12,000 \u{1b}[0m|\n+----------+----------+\n|\u{1b}[36m Ultimate \u{1b}[0m|\u{1b}[32m$35,000 \u{1b}[0m|\n+----------+----------+\n"
};
assert_eq!(
table.format(),
expected
);
}
}