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/*
* Copyright (c) 2019-2020, Sergey Bugaev <bugaevc@serenityos.org>
* 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 COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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.
*/
#include <AK/ByteBuffer.h>
#include <AK/String.h>
#include <LibCore/ArgsParser.h>
#include <LibCore/File.h>
#include <LibMarkdown/Document.h>
#include <stdio.h>
#include <sys/ioctl.h>
#include <unistd.h>
int main(int argc, char* argv[])
{
int view_width = 0;
if (isatty(STDOUT_FILENO)) {
struct winsize ws;
if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) == 0)
view_width = ws.ws_col;
}
if (view_width == 0)
view_width = 80;
if (pledge("stdio rpath", nullptr) < 0) {
perror("pledge");
return 1;
}
if (unveil("/usr/share/man", "r") < 0) {
perror("unveil");
return 1;
}
unveil(nullptr, nullptr);
const char* section = nullptr;
const char* name = nullptr;
Core::ArgsParser args_parser;
args_parser.set_general_help("Read manual pages. Try 'man man' to get started.");
args_parser.add_positional_argument(section, "Section of the man page", "section", Core::ArgsParser::Required::No);
args_parser.add_positional_argument(name, "Name of the man page", "name");
args_parser.parse(argc, argv);
auto make_path = [name](const char* section) {
return String::formatted("/usr/share/man/man{}/{}.md", section, name);
};
if (!section) {
const char* sections[] = {
"1",
"2",
"3",
"4",
"5",
"6",
"7",
"8"
};
for (auto s : sections) {
String path = make_path(s);
if (access(path.characters(), R_OK) == 0) {
section = s;
break;
}
}
if (!section) {
fprintf(stderr, "No man page for %s\n", name);
exit(1);
}
}
auto file = Core::File::construct();
file->set_filename(make_path(section));
if (!file->open(Core::IODevice::OpenMode::ReadOnly)) {
perror("Failed to open man page file");
exit(1);
}
if (pledge("stdio", nullptr) < 0) {
perror("pledge");
return 1;
}
dbgln("Loading man page from {}", file->filename());
auto buffer = file->read_all();
auto source = String::copy(buffer);
printf("%s(%s)\t\tSerenityOS manual\n", name, section);
auto document = Markdown::Document::parse(source);
VERIFY(document);
String rendered = document->render_for_terminal(view_width);
printf("%s", rendered.characters());
}
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