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// Copyright (C) 2024 Philipp Benner
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the “Software”), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
use std::io;
use std::io::{BufWriter, Write};
use crate::meta::{Meta, MetaData};
/* -------------------------------------------------------------------------- */
pub struct MetaTableWriter<'a> {
meta: &'a Meta,
widths: Vec<usize>,
use_scientific: bool,
}
/* -------------------------------------------------------------------------- */
impl<'a> MetaTableWriter<'a> {
pub fn new(meta: &'a Meta, use_scientific: bool) -> Self {
MetaTableWriter {
meta: meta,
widths: vec![0; meta.num_cols()],
use_scientific: use_scientific,
}
}
pub fn determine_widths(&mut self) -> io::Result<()> {
for j in 0..self.meta.num_cols() {
self.widths[j] = self.meta.meta_name[j].len() + 1;
}
for i in 0..self.meta.num_rows() {
update_max_widths(self.meta, i, &mut self.widths, self.use_scientific)?;
}
Ok(())
}
pub fn write_header<W: Write>(&self, writer: &mut W) -> io::Result<()> {
for j in 0..self.meta.num_cols() {
write!(
writer,
" {:width$}",
self.meta.meta_name[j],
width = self.widths[j] - 1
)?;
}
writeln!(writer)
}
pub fn write_row<W: Write>(&self, writer: &mut W, i: usize) -> io::Result<()> {
if i != 0 {
writeln!(writer)?;
}
for j in 0..self.meta.num_cols() {
write_cell(self.meta, writer, i, j, &self.widths, self.use_scientific)?;
}
Ok(())
}
}
/* -------------------------------------------------------------------------- */
fn update_max_widths(
meta: &Meta,
i: usize,
widths: &mut [usize],
use_scientific: bool,
) -> io::Result<()> {
for j in 0..meta.num_cols() {
let mut tmp_buffer = Vec::new();
{
let mut tmp_writer = BufWriter::new(&mut tmp_buffer);
write_cell(meta, &mut tmp_writer, i, j, widths, use_scientific)?;
tmp_writer.flush()?;
}
let width = tmp_buffer.len() - 1;
if width > widths[j] {
widths[j] = width;
}
}
Ok(())
}
fn write_cell_slice<W: Write>(
data: &MetaData,
writer: &mut W,
i: usize,
j: usize,
widths: &[usize],
use_scientific: bool,
) -> io::Result<()> {
let mut tmp_buffer = Vec::new();
{
let mut tmp_writer = io::Cursor::new(&mut tmp_buffer);
match data {
MetaData::StringMatrix(v) => {
for (k, s) in v[i].iter().enumerate() {
if k != 0 {
write!(tmp_writer, ",")?;
}
write!(tmp_writer, "{}", s)?;
}
}
MetaData::FloatMatrix(v) => {
for (k, f) in v[i].iter().enumerate() {
if k != 0 {
write!(tmp_writer, ",")?;
}
if use_scientific {
write!(tmp_writer, "{:e}", f)?;
} else {
write!(tmp_writer, "{}", f)?;
}
}
}
MetaData::IntMatrix(v) => {
for (k, i) in v[i].iter().enumerate() {
if k != 0 {
write!(tmp_writer, ",")?;
}
write!(tmp_writer, "{}", i)?;
}
}
_ => unreachable!(),
}
}
write!(
writer,
" {:width$}",
String::from_utf8(tmp_buffer).unwrap(),
width = widths[j] - 1
)
}
fn write_cell<W: Write>(
meta: &Meta,
writer: &mut W,
i: usize,
j: usize,
widths: &[usize],
use_scientific: bool,
) -> io::Result<()> {
match &meta.meta_data[j] {
MetaData::StringArray(v) => {
write!(writer, " {:width$}", v[i], width = widths[j] - 1)
}
MetaData::FloatArray(v) => {
if use_scientific {
write!(writer, " {:width$e}", v[i], width = widths[j] - 1)
} else {
write!(writer, " {:width$}", v[i], width = widths[j] - 1)
}
}
MetaData::IntArray(v) => {
write!(writer, " {:width$}", v[i], width = widths[j] - 1)
}
MetaData::RangeArray(v) => {
let s = format!("[{},{})", v[i].from, v[i].to);
write!(writer, " {:width$}", s, width = widths[j] - 1)
}
_ => write_cell_slice(&meta.meta_data[j], writer, i, j, widths, use_scientific),
}
}