neovim/src/nvim/main.c at fcb43e8a11c7a9a77d918e006ea46c36e53ec425 · neovim/neovim

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// Make sure extern symbols are exported on Windows

#ifdef WIN32

# define EXTERN __declspec(dllexport)

#else

# define EXTERN

#endif

#include <assert.h>

#include <limits.h>

#include <stdbool.h>

#include <stddef.h>

#include <stdint.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#ifdef ENABLE_ASAN_UBSAN

# include <sanitizer/asan_interface.h>

# ifndef MSWIN

# include <sanitizer/ubsan_interface.h>

# endif

#endif

#include "auto/config.h" // IWYU pragma: keep

#include "klib/kvec.h"

#include "nvim/api/extmark.h"

#include "nvim/api/private/defs.h"

#include "nvim/api/private/helpers.h"

#include "nvim/api/ui.h"

#include "nvim/arglist.h"

#include "nvim/ascii_defs.h"

#include "nvim/autocmd.h"

#include "nvim/autocmd_defs.h"

#include "nvim/buffer.h"

#include "nvim/buffer_defs.h"

#include "nvim/channel.h"

#include "nvim/channel_defs.h"

#include "nvim/context.h"

#include "nvim/decoration.h"

#include "nvim/decoration_provider.h"

#include "nvim/diff.h"

#include "nvim/drawline.h"

#include "nvim/drawscreen.h"

#include "nvim/errors.h"

#include "nvim/eval.h"

#include "nvim/eval/typval.h"

#include "nvim/eval/typval_defs.h"

#include "nvim/eval/userfunc.h"

#include "nvim/eval/vars.h"

#include "nvim/event/loop.h"

#include "nvim/event/multiqueue.h"

#include "nvim/event/proc.h"

#include "nvim/event/socket.h"

#include "nvim/event/stream.h"

#include "nvim/ex_cmds.h"

#include "nvim/ex_docmd.h"

#include "nvim/ex_getln.h"

#include "nvim/extmark.h"

#include "nvim/fileio.h"

#include "nvim/fold.h"

#include "nvim/garray.h"

#include "nvim/gettext_defs.h"

#include "nvim/globals.h"

#include "nvim/grid.h"

#include "nvim/hashtab.h"

#include "nvim/highlight.h"

#include "nvim/highlight_group.h"

#include "nvim/input.h"

#include "nvim/keycodes.h"

#include "nvim/log.h"

#include "nvim/lua/executor.h"

#include "nvim/lua/secure.h"

#include "nvim/lua/treesitter.h"

#include "nvim/macros_defs.h"

#include "nvim/main.h"

#include "nvim/mark.h"

#include "nvim/memline.h"

#include "nvim/memory.h"

#include "nvim/message.h"

#include "nvim/mouse.h"

#include "nvim/move.h"

#include "nvim/msgpack_rpc/channel.h"

#include "nvim/msgpack_rpc/server.h"

#include "nvim/normal.h"

#include "nvim/ops.h"

#include "nvim/option.h"

#include "nvim/option_defs.h"

#include "nvim/option_vars.h"

#include "nvim/os/fs.h"

#include "nvim/os/input.h"

#include "nvim/os/lang.h"

#include "nvim/os/os.h"

#include "nvim/os/os_defs.h"

#include "nvim/os/signal.h"

#include "nvim/os/stdpaths_defs.h"

#include "nvim/path.h"

#include "nvim/popupmenu.h"

#include "nvim/profile.h"

#include "nvim/quickfix.h"

#include "nvim/register.h"

#include "nvim/runtime.h"

#include "nvim/runtime_defs.h"

#include "nvim/shada.h"

#include "nvim/statusline.h"

#include "nvim/strings.h"

#include "nvim/syntax.h"

#include "nvim/terminal.h"

#include "nvim/types_defs.h"

#include "nvim/ui.h"

#include "nvim/ui_client.h"

#include "nvim/ui_compositor.h"

#include "nvim/version.h"

#include "nvim/vim_defs.h"

#include "nvim/window.h"

#include "nvim/winfloat.h"

#ifdef MSWIN

# include "nvim/os/os_win_console.h"

# ifndef _UCRT

# error UCRT is the only supported C runtime on windows

# endif

#endif

#if defined(MSWIN) && !defined(MAKE_LIB)

# include "nvim/mbyte.h"

#endif

// values for "window_layout"

enum {

WIN_HOR = 1, // "-o" horizontally split windows

WIN_VER = 2, // "-O" vertically split windows

WIN_TABS = 3, // "-p" windows on tab pages

};

// Values for edit_type.

enum {

EDIT_NONE = 0, // no edit type yet

EDIT_FILE = 1, // file name argument[s] given, use argument list

EDIT_STDIN = 2, // read file from stdin

EDIT_TAG = 3, // tag name argument given, use tagname

EDIT_QF = 4, // start in quickfix mode

};

#include "main.c.generated.h"

Loop main_loop;

static char *argv0 = NULL;

// Error messages

static const char *err_arg_missing = N_("Argument missing after");

static const char *err_opt_garbage = N_("Garbage after option argument");

static const char *err_opt_unknown = N_("Unknown option argument");

static const char *err_too_many_args = N_("Too many edit arguments");

static const char *err_extra_cmd =

N_("Too many \"+command\", \"-c command\" or \"--cmd command\" arguments");

void event_init(void)

{

loop_init(&main_loop, NULL);

env_init();

resize_events = multiqueue_new_child(main_loop.events);

autocmd_init();

signal_init();

// mspgack-rpc initialization

channel_init();

terminal_init();

ui_init();

TIME_MSG("event init");

}

/// @returns false if main_loop could not be closed gracefully

static bool event_teardown(void)

{

if (!main_loop.events) {

input_stop();

return true;

}

multiqueue_process_events(main_loop.events);

loop_poll_events(&main_loop, 0); // Drain thread_events, fast_events.

input_stop();

server_teardown();

channel_teardown();

proc_teardown(&main_loop);

timer_teardown();

signal_teardown();

terminal_teardown();

return loop_close(&main_loop, true);

}

/// Performs early initialization.

static void early_init(mparm_T *paramp)

{

os_hint_priority();

estack_init();

cmdline_init();

eval_init(); // init global variables

set_vim_var_nr(VV_STARTTIME, (varnumber_T)os_realtime());

init_path(argv0 ? argv0 : "nvim");

init_normal_cmds(); // Init the table of Normal mode commands.

runtime_init();

highlight_init();

#ifdef MSWIN

OSVERSIONINFO ovi;

ovi.dwOSVersionInfoSize = sizeof(ovi);

// Disable warning about GetVersionExA being deprecated. There doesn't seem to be a convenient

// replacement that doesn't add a ton of extra code as of writing this.

# ifdef _MSC_VER

# pragma warning(suppress : 4996)

GetVersionEx(&ovi);

# else

GetVersionEx(&ovi);

# endif

snprintf(windowsVersion, sizeof(windowsVersion), "%d.%d",

(int)ovi.dwMajorVersion, (int)ovi.dwMinorVersion);

#endif

TIME_MSG("early init");

// Setup to use the current locale (for ctype() and many other things).

// NOTE: Translated messages with encodings other than latin1 will not

// work until set_init_1() has been called!

init_locale();

// tabpage local options (p_ch) must be set before allocating first tabpage.

set_init_tablocal();

// Allocate the first tabpage, window and buffer.

win_alloc_first();

TIME_MSG("init first window");

alist_init(&global_alist); // Init the argument list to empty.

global_alist.id = 0;

// Set the default values for the options.

// First find out the home directory, needed to expand "~" in options.

init_homedir(); // find real value of $HOME

set_init_1(paramp != NULL ? paramp->clean : false);

log_init();

TIME_MSG("inits 1");

set_lang_var(); // set v:lang and v:ctype

// initialize quickfix list

qf_init_stack();

}

#ifdef MAKE_LIB

int nvim_main(int argc, char **argv); // silence -Wmissing-prototypes

int nvim_main(int argc, char **argv)

#else

int main(int argc, char **argv)

#endif

{

argv0 = argv[0];

TO_SLASH(argv0);

if (!appname_is_valid()) {

fprintf(stderr, "$NVIM_APPNAME must be a name or relative path.\n");

exit(1);

}

char *fname = NULL; // file name from command line

mparm_T params; // various parameters passed between

// main() and other functions.

// Many variables are in `params` so that we can pass them around easily.

// `argc` and `argv` are also copied, so that they can be changed.

init_params(&params, argc, argv);

init_startuptime(&params);

// Need to find "--clean" before actually parsing arguments.

for (int i = 1; i < params.argc; i++) {

if (STRICMP(params.argv[i], "--clean") == 0) {

params.clean = true;

break;

}

event_init();

early_init(&params);

set_argv_var(argv, argc); // set v:argv

// Check if we have an interactive window.

check_and_set_isatty(&params);

// Process the command line arguments. File names are put in the global

// argument list "global_alist".

command_line_scan(&params);

set_argf_var();

nlua_init(argv, argc, params.lua_arg0);

TIME_MSG("init lua interpreter");

// On Windows, channel_from_stdio() replaces fd 2 with CONOUT$ (for ConPTY

// support). Save a dup of the original stderr first so that if server_init()

// fails, print_mainerr() can write through the pipe to the TUI client's relay.

#ifdef MSWIN

int startup_stderr_fd = -1;

if (embedded_mode) {

startup_stderr_fd = os_dup_cloexec(STDERR_FILENO);

}

#endif

if (embedded_mode) {

const char *err;

if (!channel_from_stdio(true, CALLBACK_READER_INIT, &err)) {

abort();

}

if (GARGCOUNT > 0) {

fname = get_fname(&params);

}

// Recovery mode without a file name: List swap files.

// In this case, no UI is needed.

if (recoverymode && fname == NULL) {

headless_mode = true;

}

#ifdef MSWIN

// on windows we use CONIN special file, thus we don't know this yet.

bool has_term = true;

#else

bool has_term = (stdin_isatty || stdout_isatty || stderr_isatty);

#endif

bool use_builtin_ui = (has_term && !headless_mode && !embedded_mode && !silent_mode);

if (params.remote) {

remote_request(&params, params.remote, params.server_addr, argc, argv,

use_builtin_ui);

}

bool remote_ui = (ui_client_channel_id != 0);

if (use_builtin_ui && !remote_ui) {

ui_client_forward_stdin = !stdin_isatty;

uint64_t rv = ui_client_start_server(get_vim_var_str(VV_PROGPATH),

(size_t)params.argc, params.argv);

if (!rv) {

fprintf(stderr, "Failed to start Nvim server!\n");

os_exit(1);

}

ui_client_channel_id = rv;

}

// NORETURN: Start builtin UI client.

if (ui_client_channel_id) {

ui_client_run(); // NORETURN

}

assert(!ui_client_channel_id && !use_builtin_ui);

// Nvim server...

if (!server_init(params.listen_addr)) {

#ifdef MSWIN

// Restore the original stderr (pipe to TUI client) so print_mainerr()

// output is visible in the TUI terminal via the relay in on_channel_output.

if (startup_stderr_fd >= 0) {

dup2(startup_stderr_fd, STDERR_FILENO);

close(startup_stderr_fd);

startup_stderr_fd = -1;

}

#endif

mainerr(IObuff, NULL, NULL);

}

#ifdef MSWIN

// Server started successfully. Close the saved fd so the pipe write end is

// fully released — child processes inherit CONOUT$ (fd 2), not the pipe.

if (startup_stderr_fd >= 0) {

close(startup_stderr_fd);

startup_stderr_fd = -1;

}

#endif

TIME_MSG("expanding arguments");

if (params.diff_mode && params.window_count == -1) {

params.window_count = 0; // open up to 3 windows

}

// Don't redraw until much later.

RedrawingDisabled++;

setbuf(stdout, NULL); // NOLINT(bugprone-unsafe-functions)

full_screen = !silent_mode;

// Set the default values for the options that use Rows and Columns.

win_init_size();

// Set the 'diff' option now, so that it can be checked for in a vimrc

// file. There is no buffer yet though.

if (params.diff_mode) {

diff_win_options(firstwin, false);

}

assert(p_ch >= 0 && Rows >= p_ch && Rows - p_ch <= INT_MAX);

cmdline_row = Rows - (int)p_ch;

msg_row = cmdline_row;

default_grid_alloc(); // allocate screen buffers

set_init_2(headless_mode);

TIME_MSG("inits 2");

msg_scroll = true;

no_wait_return = true;

init_highlight(true, false); // Default highlight groups.

ui_comp_syn_init();

TIME_MSG("init highlight");

// Set the break level after the terminal is initialized.

debug_break_level = params.use_debug_break_level;

// Read ex-commands if invoked with "-es".

if (!stdin_isatty && !params.input_istext && silent_mode && exmode_active) {

input_start();

}

// Wait for UIs to set up Nvim or show early messages

// and prompts (--cmd, swapfile dialog, …).

bool use_remote_ui = (embedded_mode && !headless_mode);

if (use_remote_ui) {

TIME_MSG("waiting for UI");

remote_ui_wait_for_attach();

TIME_MSG("done waiting for UI");

firstwin->w_prev_height = firstwin->w_height; // may have changed

}

// prepare screen now

starting = NO_BUFFERS;

screenclear();

win_new_screensize();

TIME_MSG("clear screen");

// Handle "foo | nvim". EDIT_FILE may be overwritten now. #6299

if (edit_stdin(&params)) {

params.edit_type = EDIT_STDIN;

}

if (params.scriptin) {

if (!open_scriptin(params.scriptin)) {

os_exit(2);

}

if (params.scriptout) {

scriptout = os_fopen(params.scriptout, params.scriptout_append ? APPENDBIN : WRITEBIN);

if (scriptout == NULL) {

fprintf(stderr, _("Cannot open for script output: \""));

fprintf(stderr, "%s\"\n", params.scriptout);

os_exit(2);

}

nlua_init_defaults();

TIME_MSG("init default mappings & autocommands");

bool vimrc_none = strequal(params.use_vimrc, "NONE");

// Reset 'loadplugins' for "-u NONE" before "--cmd" arguments.

// Allows for setting 'loadplugins' there.

// For --clean we still want to load plugins.

p_lpl = vimrc_none ? params.clean : p_lpl;

// Execute --cmd arguments.

exe_pre_commands(&params);

if (!vimrc_none || params.clean) {

// Sources ftplugin.vim and indent.vim. We do this *before* the user startup scripts to ensure

// ftplugins run before FileType autocommands defined in the init file (which allows those

// autocommands to overwrite settings from ftplugins).

filetype_plugin_enable();

}

// Source startup scripts.

source_startup_scripts(&params);

// If using the runtime (-u is not NONE), enable syntax & filetype plugins.

if (!vimrc_none || params.clean) {

// Sources filetype.lua unless the user explicitly disabled it with :filetype off.

filetype_maybe_enable();

// Sources syntax/syntax.vim. We do this *after* the user startup scripts so that users can

// disable syntax highlighting with `:syntax off` if they wish.

syn_maybe_enable();

}

set_vim_var_nr(VV_VIM_DID_INIT, 1);

// Read all the plugin files.

load_plugins();

// Decide about window layout for diff mode after reading vimrc.

set_window_layout(&params);

// "nvim -r" (recovery mode) without a file name: List swap files.

if (recoverymode && fname == NULL) {

typval_T items_tv;

tv_list_alloc_ret(&items_tv, 0);

recover_names(NULL, false, items_tv.vval.v_list);

typval_T lua_args[] = { items_tv, { .v_type = VAR_UNKNOWN } };

nlua_call_typval("vim._core.swapfile", "list_swaps", lua_args, NULL);

tv_clear(&items_tv);

os_exit(0);

}

// Set some option defaults after reading vimrc files.

set_init_3();

TIME_MSG("inits 3");

// "-n" argument: Disable swap file by setting 'updatecount' to 0.

// Note that this overrides anything from a vimrc file.

if (params.no_swap_file) {

p_uc = 0;

}

// XXX: Minimize 'updatetime' for -es/-Es. #7679

if (silent_mode) {

p_ut = 1;

}

// Read in registers, history etc, from the ShaDa file.

// This is where v:oldfiles gets filled.

if (*p_shada != NUL) {

shada_read_everything(NULL, false, true);

TIME_MSG("reading ShaDa");

}

// It's better to make v:oldfiles an empty list than NULL.

if (get_vim_var_list(VV_OLDFILES) == NULL) {

set_vim_var_list(VV_OLDFILES, tv_list_alloc(0));

}

// "-q errorfile": Load the error file now.

// If the error file can't be read, exit before doing anything else.

handle_quickfix(&params);

// Start putting things on the screen.

// Scroll screen down before drawing over it

// Clear screen now, so file message will not be cleared.

starting = NO_BUFFERS;

no_wait_return = false;

if (!exmode_active) {

msg_scroll = false;

}

// Read file (text, not commands) from stdin if:

// - stdin is not a tty

// - and -e/-es was not given

// Do this before starting Raw mode, because it may change things that the

// writing end of the pipe doesn't like, e.g., in case stdin and stderr

// are the same terminal: "cat | vim -".

// Using autocommands here may cause trouble...

if (params.edit_type == EDIT_STDIN && !recoverymode) {

read_stdin();

}

setmouse(); // may start using the mouse

redraw_later(curwin, UPD_VALID);

no_wait_return = true;

// Create the requested number of windows and edit buffers in them.

// Also does recovery if "recoverymode" set.

create_windows(&params);

TIME_MSG("opening buffers");

// Clear v:swapcommand

set_vim_var_string(VV_SWAPCOMMAND, NULL, -1);

// Ex starts at last line of the file.

if (exmode_active) {

curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count;

}

apply_autocmds(EVENT_BUFENTER, NULL, NULL, false, curbuf);

TIME_MSG("BufEnter autocommands");

setpcmark();

// When started with "-q errorfile" jump to first error now.

if (params.edit_type == EDIT_QF) {

qf_jump(NULL, 0, 0, false);

TIME_MSG("jump to first error");

}

// If opened more than one window, start editing files in the other

// windows.

edit_buffers(&params);

if (params.diff_mode) {

// set options in each window for "nvim -d".

FOR_ALL_WINDOWS_IN_TAB(wp, curtab) {

if (!wp->w_arg_idx_invalid) {

diff_win_options(wp, true);

}

// Shorten any of the filenames, but only when absolute.

shorten_fnames(false);

// Need to jump to the tag before executing the '-c command'.

// Makes "vim -c '/return' -t main" work.

handle_tag(params.tagname);

// Execute any "+", "-c" and "-S" arguments.

if (params.n_commands > 0) {

exe_commands(&params);

}

starting = 0;

RedrawingDisabled = 0;

redraw_all_later(UPD_NOT_VALID);

no_wait_return = false;

// 'autochdir' has been postponed.

do_autochdir();

set_vim_var_nr(VV_VIM_DID_ENTER, 1);

apply_autocmds(EVENT_VIMENTER, NULL, NULL, false, curbuf);

TIME_MSG("VimEnter autocommands");

if (use_remote_ui) {

do_autocmd_uienter_all();

TIME_MSG("UIEnter autocommands");

}

#ifdef MSWIN

if (use_remote_ui) {

os_icon_init();

}

os_title_save();

#endif

// Adjust default register name for "unnamed" in 'clipboard'. Can only be

// done after the clipboard is available and all initial commands that may

// modify the 'clipboard' setting have run; i.e. just before entering the

// main loop.

set_reg_var(get_default_register_name());

// When a startup script or session file setup for diff'ing and

// scrollbind, sync the scrollbind now.

if (curwin->w_p_diff && curwin->w_p_scb) {

update_topline(curwin);

check_scrollbind(0, 0);

TIME_MSG("diff scrollbinding");

}

// If ":startinsert" command used, stuff a dummy command to be able to

// call normal_cmd(), which will then start Insert mode.

if (restart_edit != 0) {

stuffcharReadbuff(K_NOP);

}

// WORKAROUND(mhi): #3023

if (cb_flags & (kOptCbFlagUnnamed | kOptCbFlagUnnamedplus)) {

eval_has_provider("clipboard", false);

}

if (params.luaf != NULL) {

// Like "--cmd", "+", "-c" and "-S", don't truncate messages.

msg_scroll = true;

DLOG("executing Lua -l script");

bool lua_ok = nlua_exec_file(params.luaf);

TIME_MSG("executing Lua -l script");

if (msg_didout) {

msg_putchar('\n');

msg_didout = false;

}

getout(lua_ok ? 0 : 1);

}

TIME_MSG("before starting main loop");

ILOG("starting main loop");

// Main loop: never returns.

normal_enter(false);

#if defined(MSWIN) && !defined(MAKE_LIB)

xfree(argv);

#endif

return 0;

}

void os_exit(int r)

FUNC_ATTR_NORETURN

{

exiting = true;

if (ui_client_channel_id) {

ui_client_stop();

if (r == 0) {

r = ui_client_exit_status;

}

} else {

ui_flush();

ui_call_stop();

}

if (!event_teardown() && r == 0) {

r = 1; // Exit with error if main_loop did not teardown gracefully.

}

if (ui_client_channel_id) {

#ifdef HAVE_TERMIOS_H

// Sometimes the final output to TTY can be lost (at least on FreeBSD).

// Call tcdrain() to ensure all output has been transmitted to host terminal.

// Do this after event_teardown() as libuv events may write to stderr.

if (stdout_isatty) {

tcdrain(STDOUT_FILENO);

}

if (stderr_isatty) {

tcdrain(STDERR_FILENO);

}

#endif

} else {

ml_close_all(true); // remove all memfiles

}

if (used_stdin) {

stream_set_blocking(STDIN_FILENO, true); // normalize stream (#2598)

}

ILOG("Nvim exit: %d", r);

#ifdef EXITFREE

free_all_mem();

#endif

exit(r);

}

/// Exit properly

void getout(int exitval)

FUNC_ATTR_NORETURN

{

assert(!ui_client_channel_id);

exiting = true;

// make sure startuptimes have been flushed

time_finish();

// On error during Ex mode, exit with a non-zero code.

// POSIX requires this, although it's not 100% clear from the standard.

if (exmode_active) {

exitval += ex_exitval;

}

set_vim_var_type(VV_EXITING, VAR_NUMBER);

set_vim_var_nr(VV_EXITING, exitval);

// Set v:exitreason if not already set (e.g. by :restart).

if (*get_vim_var_str(VV_EXITREASON) == NUL) {

set_vim_var_string(VV_EXITREASON, S_LEN("quit"));

}

// Invoked all ":defer" functions in the function stack.

invoke_all_defer();

// Optionally print hashtable efficiency.

hash_debug_results();

if (v_dying <= 1) {

const tabpage_T *next_tp;

// Trigger BufWinLeave for all windows, but only once per buffer.

for (const tabpage_T *tp = first_tabpage; tp != NULL; tp = next_tp) {

next_tp = tp->tp_next;

FOR_ALL_WINDOWS_IN_TAB(wp, tp) {

if (wp->w_buffer == NULL || !buf_valid(wp->w_buffer)) {

// Autocmd must have close the buffer already, skip.

continue;

}

buf_T *buf = wp->w_buffer;

if (buf_get_changedtick(buf) != -1) {

bufref_T bufref;

set_bufref(&bufref, buf);

apply_autocmds(EVENT_BUFWINLEAVE, buf->b_fname, buf->b_fname, false, buf);

if (bufref_valid(&bufref)) {

buf_set_changedtick(buf, -1); // note that we did it already

}

// start all over, autocommands may mess up the lists

next_tp = first_tabpage;

break;

}

// Trigger BufUnload for buffers that are loaded

FOR_ALL_BUFFERS(buf) {

if (buf->b_ml.ml_mfp != NULL) {

bufref_T bufref;

set_bufref(&bufref, buf);

apply_autocmds(EVENT_BUFUNLOAD, buf->b_fname, buf->b_fname, false, buf);

if (!bufref_valid(&bufref)) {

// Autocmd deleted the buffer.

break;

}

int unblock = 0;

// deathtrap() blocks autocommands, but we do want to trigger

// VimLeavePre.

if (is_autocmd_blocked()) {

unblock_autocmds();

unblock++;

}

apply_autocmds(EVENT_VIMLEAVEPRE, NULL, NULL, false, curbuf);

if (unblock) {

block_autocmds();

}

if (

#ifdef EXITFREE

!entered_free_all_mem &&

#endif

p_shada && *p_shada != NUL) {

// Write out the registers, history, marks etc, to the ShaDa file

shada_write_file(NULL, false);

}

if (v_dying <= 1) {

int unblock = 0;

// deathtrap() blocks autocommands, but we do want to trigger VimLeave.

if (is_autocmd_blocked()) {

unblock_autocmds();

unblock++;

}

apply_autocmds(EVENT_VIMLEAVE, NULL, NULL, false, curbuf);

if (unblock) {

block_autocmds();

}

profile_dump();

if (did_emsg) {

// give the user a chance to read the (error) message

no_wait_return = false;

// TODO(justinmk): this may call getout(0), clobbering exitval...

wait_return(false);

}

// Apply 'titleold'.

if (p_title && *p_titleold != NUL) {

ui_call_set_title(cstr_as_string(p_titleold));

}

if (garbage_collect_at_exit) {

garbage_collect(false);

}

#ifdef MSWIN

// Restore Windows console icon before exiting.

os_icon_reset();

os_title_reset();

#endif

os_exit(exitval);

}

/// Preserve files, print contents of `errmsg`, and exit 1.

/// @param errmsg If NULL, this function will not print anything.

///

/// May be called from deadly_signal().

void preserve_exit(const char *errmsg)

FUNC_ATTR_NORETURN

{

// 'true' when we are sure to exit, e.g., after a deadly signal

static bool really_exiting = false;

// Prevent repeated calls into this method.

if (really_exiting) {

if (used_stdin) {

// normalize stream (#2598)

stream_set_blocking(STDIN_FILENO, true);

}

exit(2);

}

really_exiting = true;

// Ignore SIGHUP while we are already exiting. #9274

signal_reject_deadly();

if (ui_client_channel_id) {

// For TUI: exit alternate screen so that the error messages can be seen.

ui_client_stop();

}

if (errmsg != NULL && errmsg[0] != NUL) {

bool has_eol = '\n' == errmsg[strlen(errmsg) - 1];

fprintf(stderr, has_eol ? "%s" : "%s\n", errmsg);

}

if (ui_client_channel_id) {

os_exit(1);

}

ml_close_notmod(); // close all not-modified buffers

FOR_ALL_BUFFERS(buf) {

if (buf->b_ml.ml_mfp != NULL && buf->b_ml.ml_mfp->mf_fname != NULL) {

if (errmsg != NULL) {

fprintf(stderr, "Nvim: preserving files...\n");

}

ml_sync_all(false, false, true); // preserve all swap files

break;

}

ml_close_all(false); // close all memfiles, without deleting

if (errmsg != NULL) {

fprintf(stderr, "Nvim: Finished.\n");

}

getout(1);

}

/// Gets the integer value of a numeric command line argument if given,

/// such as '-o10'.

///

/// @param[in] p pointer to argument

/// @param[in, out] idx pointer to index in argument, is incremented

/// @param[in] def default value

///

/// @return def unmodified if:

/// - argument isn't given

/// - argument is non-numeric

///

/// @return argument's numeric value otherwise

static int get_number_arg(const char *p, int *idx, int def)

FUNC_ATTR_NONNULL_ALL FUNC_ATTR_WARN_UNUSED_RESULT

{

if (ascii_isdigit(p[*idx])) {

def = atoi(&(p[*idx]));

while (ascii_isdigit(p[*idx])) {

*idx = *idx + 1;

}

return def;

}

static uint64_t server_connect(char *server_addr, const char **errmsg)

{

if (server_addr == NULL) {

*errmsg = "no address specified";

return 0;

}

CallbackReader on_data = CALLBACK_READER_INIT;

const char *error = NULL;

bool is_tcp = socket_address_tcp_host_end(server_addr) != NULL;

// connected to channel

uint64_t chan = channel_connect(is_tcp, server_addr, true, on_data, 500, &error);

if (error) {

*errmsg = error;

return 0;

}

return chan;

}

/// Handle remote subcommands

static void remote_request(mparm_T *params, int remote_args, char *server_addr, int argc,

char **argv, bool ui_only)

{

bool is_ui = strequal(argv[remote_args], "--remote-ui");

if (ui_only && !is_ui) {

// TODO(bfredl): this implies always starting the TUI.

// if we be smart we could delay this past should_exit

return;

}

const char *connect_error = NULL;

uint64_t chan = server_connect(server_addr, &connect_error);

Object rvobj = OBJECT_INIT;

if (is_ui) {

if (!chan) {

#ifdef MSWIN

// The TUI client is spawned in a ConPTY which only captures stdout.

// Redirect stderr to stdout so this error appears in the terminal.

dup2(STDOUT_FILENO, STDERR_FILENO);

#endif

fprintf(stderr, "Remote ui failed to start: %s\n", connect_error);

os_exit(1);

} else if (strequal(server_addr, os_getenv_noalloc("NVIM"))) {

fprintf(stderr, "%s", "Cannot attach UI of :terminal child to its parent. ");

fprintf(stderr, "%s\n", "(Unset $NVIM to skip this check)");

os_exit(1);

}

ui_client_channel_id = chan;

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