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-rw-r--r--Shell/main.cpp194
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diff --git a/Shell/main.cpp b/Shell/main.cpp
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--- a/Shell/main.cpp
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-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@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 "Execution.h"
-#include "Shell.h"
-#include <LibCore/ArgsParser.h>
-#include <LibCore/Event.h>
-#include <LibCore/EventLoop.h>
-#include <LibCore/File.h>
-#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-RefPtr<Line::Editor> editor;
-Shell::Shell* s_shell;
-
-int main(int argc, char** argv)
-{
- Core::EventLoop loop;
-
- Core::EventLoop::register_signal(SIGINT, [](int) {
- s_shell->kill_job(s_shell->current_job(), SIGINT);
- });
-
- Core::EventLoop::register_signal(SIGWINCH, [](int) {
- s_shell->kill_job(s_shell->current_job(), SIGWINCH);
- });
-
- Core::EventLoop::register_signal(SIGTTIN, [](int) {});
- Core::EventLoop::register_signal(SIGTTOU, [](int) {});
-
- Core::EventLoop::register_signal(SIGHUP, [](int) {
- for (auto& it : s_shell->jobs)
- s_shell->kill_job(it.value.ptr(), SIGHUP);
-
- s_shell->editor()->save_history(s_shell->get_history_path());
- });
-
- editor = Line::Editor::construct();
- editor->initialize();
-
- auto shell = Shell::Shell::construct(*editor);
- s_shell = shell.ptr();
-
- s_shell->setup_signals();
-
-#ifndef __serenity__
- sigset_t blocked;
- sigemptyset(&blocked);
- sigaddset(&blocked, SIGTTOU);
- sigaddset(&blocked, SIGTTIN);
- pthread_sigmask(SIG_BLOCK, &blocked, nullptr);
-#endif
-#ifdef __serenity__
- if (pledge("stdio rpath wpath cpath proc exec tty accept sigaction unix fattr", nullptr) < 0) {
- perror("pledge");
- return 1;
- }
-#endif
-
- shell->termios = editor->termios();
- shell->default_termios = editor->default_termios();
-
- editor->on_display_refresh = [&](auto& editor) {
- editor.strip_styles();
- if (shell->should_format_live()) {
- auto line = editor.line();
- ssize_t cursor = editor.cursor();
- editor.clear_line();
- editor.insert(shell->format(line, cursor));
- if (cursor >= 0)
- editor.set_cursor(cursor);
- }
- shell->highlight(editor);
- };
- editor->on_tab_complete = [&](const Line::Editor&) {
- return shell->complete();
- };
-
- const char* command_to_run = nullptr;
- const char* file_to_read_from = nullptr;
- Vector<const char*> script_args;
- bool skip_rc_files = false;
- const char* format = nullptr;
- bool should_format_live = false;
-
- Core::ArgsParser parser;
- parser.add_option(command_to_run, "String to read commands from", "command-string", 'c', "command-string");
- parser.add_option(skip_rc_files, "Skip running shellrc files", "skip-shellrc", 0);
- parser.add_option(format, "Format the given file into stdout and exit", "format", 0, "file");
- parser.add_option(should_format_live, "Enable live formatting", "live-formatting", 'f');
- parser.add_positional_argument(file_to_read_from, "File to read commands from", "file", Core::ArgsParser::Required::No);
- parser.add_positional_argument(script_args, "Extra argumets to pass to the script (via $* and co)", "argument", Core::ArgsParser::Required::No);
-
- parser.parse(argc, argv);
-
- shell->set_live_formatting(should_format_live);
-
- if (format) {
- auto file = Core::File::open(format, Core::IODevice::ReadOnly);
- if (file.is_error()) {
- fprintf(stderr, "Error: %s", file.error().characters());
- return 1;
- }
-
- ssize_t cursor = -1;
- puts(shell->format(file.value()->read_all(), cursor).characters());
- return 0;
- }
-
- auto pid = getpid();
- if (auto sid = getsid(pid); sid == 0) {
- if (setsid() < 0) {
- perror("setsid");
- // Let's just hope that it's ok.
- }
- } else if (sid != pid) {
- if (getpgid(pid) != pid) {
- dbgln("We were already in a session with sid={} (we are {}), let's do some gymnastics", sid, pid);
- if (setpgid(pid, sid) < 0) {
- auto strerr = strerror(errno);
- dbgln("couldn't setpgid: {}", strerr);
- }
- if (setsid() < 0) {
- auto strerr = strerror(errno);
- dbgln("couldn't setsid: {}", strerr);
- }
- }
- }
-
- shell->current_script = argv[0];
-
- if (!skip_rc_files) {
- auto run_rc_file = [&](auto& name) {
- String file_path = name;
- if (file_path.starts_with('~'))
- file_path = shell->expand_tilde(file_path);
- if (Core::File::exists(file_path)) {
- shell->run_file(file_path, false);
- }
- };
- run_rc_file(Shell::Shell::global_init_file_path);
- run_rc_file(Shell::Shell::local_init_file_path);
- }
-
- {
- Vector<String> args;
- for (auto* arg : script_args)
- args.empend(arg);
- shell->set_local_variable("ARGV", adopt(*new Shell::AST::ListValue(move(args))));
- }
-
- if (command_to_run) {
- dbgln("sh -c '{}'\n", command_to_run);
- shell->run_command(command_to_run);
- return 0;
- }
-
- if (file_to_read_from && StringView { "-" } != file_to_read_from) {
- if (shell->run_file(file_to_read_from))
- return 0;
- return 1;
- }
-
- shell->add_child(*editor);
-
- Core::EventLoop::current().post_event(*shell, make<Core::CustomEvent>(Shell::Shell::ShellEventType::ReadLine));
-
- return loop.exec();
-}