minix/external/bsd/atf/dist/atf-c++/detail/ui.cpp

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//
// Automated Testing Framework (atf)
//
// Copyright (c) 2007 The NetBSD Foundation, Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND
// CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
// IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
// GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
// IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
// IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
extern "C" {
#include <sys/ioctl.h>
#include <termios.h>
#include <unistd.h>
}
#include <sstream>
#include "env.hpp"
#include "text.hpp"
#include "sanity.hpp"
#include "text.hpp"
#include "ui.hpp"
namespace impl = atf::ui;
#define IMPL_NAME "atf::ui"
static
size_t
terminal_width(void)
{
static bool done = false;
static size_t width = 0;
if (!done) {
if (atf::env::has("COLUMNS")) {
const std::string cols = atf::env::get("COLUMNS");
if (cols.length() > 0) {
width = atf::text::to_type< size_t >(cols);
}
} else {
struct winsize ws;
if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) != -1)
width = ws.ws_col;
}
if (width >= 80)
width -= 5;
done = true;
}
return width;
}
static
std::string
format_paragraph(const std::string& text,
const std::string& tag,
const bool first,
const bool repeat,
const size_t col)
{
PRE(text.find('\n') == std::string::npos);
const std::string pad(col - tag.length(), ' ');
const std::string fullpad(col, ' ');
std::string formatted;
if (first || repeat)
formatted = tag + pad;
else
formatted = fullpad;
INV(formatted.length() == col);
size_t curcol = col;
const size_t maxcol = terminal_width();
std::vector< std::string > words = atf::text::split(text, " ");
for (std::vector< std::string >::const_iterator iter = words.begin();
iter != words.end(); iter++) {
const std::string& word = *iter;
if (iter != words.begin() && maxcol > 0 &&
curcol + word.length() + 1 > maxcol) {
if (repeat)
formatted += '\n' + tag + pad;
else
formatted += '\n' + fullpad;
curcol = col;
} else if (iter != words.begin()) {
formatted += ' ';
curcol++;
}
formatted += word;
curcol += word.length();
}
return formatted;
}
std::string
impl::format_error(const std::string& prog_name, const std::string& error)
{
return format_text_with_tag("ERROR: " + error, prog_name + ": ", true);
}
std::string
impl::format_info(const std::string& prog_name, const std::string& msg)
{
return format_text_with_tag(msg, prog_name + ": ", true);
}
std::string
impl::format_text(const std::string& text)
{
return format_text_with_tag(text, "", false, 0);
}
std::string
impl::format_text_with_tag(const std::string& text, const std::string& tag,
bool repeat, size_t col)
{
PRE(col == 0 || col >= tag.length());
if (col == 0)
col = tag.length();
std::string formatted;
std::vector< std::string > lines = atf::text::split(text, "\n");
for (std::vector< std::string >::const_iterator iter = lines.begin();
iter != lines.end(); iter++) {
const std::string& line = *iter;
formatted += format_paragraph(line, tag, iter == lines.begin(),
repeat, col);
if (iter + 1 != lines.end()) {
if (repeat)
formatted += "\n" + tag + "\n";
else
formatted += "\n\n";
}
}
return formatted;
}
std::string
impl::format_warning(const std::string& prog_name, const std::string& error)
{
return format_text_with_tag("WARNING: " + error, prog_name + ": ", true);
}