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// Copyright (C) 2021 Joel Rosdahl and other contributors
//
// See doc/AUTHORS.adoc for a complete list of contributors.
//
// This program is free software; you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 3 of the License, or (at your option)
// any later version.
//
// This program is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
// more details.
//
// You should have received a copy of the GNU General Public License along with
// this program; if not, write to the Free Software Foundation, Inc., 51
// Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
#include "TextTable.hpp"
#include <assertions.hpp>
#include <third_party/fmt/core.h>
#include <algorithm>
namespace util {
void
TextTable::add_heading(const std::string& text)
{
Cell cell(text);
cell.m_heading = true;
m_rows.push_back({cell});
m_columns = std::max(m_columns, size_t(1));
}
void
TextTable::add_row(const std::vector<Cell>& cells)
{
m_rows.emplace_back();
for (const auto& cell : cells) {
for (size_t i = 0; i < cell.m_colspan - 1; ++i) {
Cell dummy("");
dummy.m_colspan = 0;
m_rows.back().push_back(dummy);
}
m_rows.back().push_back(cell);
m_columns = std::max(m_columns, m_rows.back().size());
}
}
std::vector<size_t>
TextTable::compute_column_widths() const
{
std::vector<size_t> result(m_columns, 0);
for (size_t column_index = 0; column_index < m_columns; ++column_index) {
for (const auto& row : m_rows) {
if (column_index >= row.size()) {
continue;
}
const auto& cell = row[column_index];
if (cell.m_heading || cell.m_colspan == 0) {
continue;
}
size_t width_of_left_cols_in_span = 0;
for (size_t i = 0; i < cell.m_colspan - 1; ++i) {
width_of_left_cols_in_span += 1 + result[column_index - i - 1];
}
result[column_index] = std::max(
result[column_index],
cell.m_text.length()
- std::min(width_of_left_cols_in_span, cell.m_text.length()));
}
}
return result;
}
std::string
TextTable::render() const
{
auto column_widths = compute_column_widths();
std::string result;
for (const auto& row : m_rows) {
ASSERT(column_widths.size() >= row.size());
std::string r;
bool first = true;
for (size_t i = 0; i < row.size(); ++i) {
const auto& cell = row[i];
if (cell.m_colspan == 0) {
continue;
}
if (first) {
first = false;
} else {
r += ' ';
}
size_t width = 0;
for (size_t j = i + 1 - cell.m_colspan; j <= i; ++j) {
width += column_widths[j] + (j == i ? 0 : 1);
}
r += fmt::format(
(cell.m_right_align ? "{:>{}}" : "{:<{}}"), cell.m_text, width);
}
result.append(r, 0, r.find_last_not_of(' ') + 1);
result += '\n';
}
return result;
}
TextTable::Cell::Cell(const std::string& text)
: m_text(text),
m_right_align(false)
{
}
TextTable::Cell::Cell(const char* text) : Cell(std::string(text))
{
}
TextTable::Cell::Cell(const uint64_t number)
: m_text(fmt::format("{}", number)),
m_right_align(true)
{
}
TextTable::Cell&
TextTable::Cell::left_align()
{
m_right_align = false;
return *this;
}
TextTable::Cell&
TextTable::Cell::colspan(const size_t columns)
{
ASSERT(columns >= 1);
m_colspan = columns;
return *this;
}
TextTable::Cell&
TextTable::Cell::right_align()
{
m_right_align = true;
return *this;
}
} // namespace util
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