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1 | #include <errno.h> | ||
2 | #include <fcntl.h> | ||
3 | #include <stdbool.h> | ||
4 | #include <stdio.h> | ||
5 | #include <stdlib.h> | ||
6 | #include <string.h> | ||
7 | #include <sys/stat.h> | ||
8 | #include <sys/utsname.h> | ||
9 | #include <unistd.h> | ||
10 | #include "block.h" | ||
11 | #include "command/cache.h" | ||
12 | #include "command/error.h" | ||
13 | #include "commands.h" | ||
14 | #include "compat.h" | ||
15 | #include "compiler.h" | ||
16 | #include "config.h" | ||
17 | #include "editor.h" | ||
18 | #include "encoding.h" | ||
19 | #include "file-history.h" | ||
20 | #include "frame.h" | ||
21 | #include "history.h" | ||
22 | #include "load-save.h" | ||
23 | #include "move.h" | ||
24 | #include "palette.h" | ||
25 | #include "search.h" | ||
26 | #include "showkey.h" | ||
27 | #include "signals.h" | ||
28 | #include "syntax/state.h" | ||
29 | #include "syntax/syntax.h" | ||
30 | #include "tag.h" | ||
31 | #include "terminal/input.h" | ||
32 | #include "terminal/ioctl.h" | ||
33 | #include "terminal/key.h" | ||
34 | #include "terminal/mode.h" | ||
35 | #include "terminal/output.h" | ||
36 | #include "terminal/paste.h" | ||
37 | #include "terminal/terminal.h" | ||
38 | #include "trace.h" | ||
39 | #include "ui.h" | ||
40 | #include "util/debug.h" | ||
41 | #include "util/exitcode.h" | ||
42 | #include "util/fd.h" | ||
43 | #include "util/log.h" | ||
44 | #include "util/macros.h" | ||
45 | #include "util/path.h" | ||
46 | #include "util/progname.h" | ||
47 | #include "util/strtonum.h" | ||
48 | #include "util/xmalloc.h" | ||
49 | #include "util/xreadwrite.h" | ||
50 | #include "util/xsnprintf.h" | ||
51 | #include "version.h" | ||
52 | #include "view.h" | ||
53 | #include "window.h" | ||
54 | |||
55 | ✗ | static void cleanup_handler(void *userdata) | |
56 | { | ||
57 | ✗ | EditorState *e = userdata; | |
58 | ✗ | set_fatal_error_cleanup_handler(NULL, NULL); | |
59 | ✗ | if (!e->child_controls_terminal) { | |
60 | ✗ | ui_end(e, true); | |
61 | ✗ | term_cooked(); | |
62 | } | ||
63 | ✗ | } | |
64 | |||
65 | 1 | static ExitCode list_builtin_configs(void) | |
66 | { | ||
67 | 1 | String str = dump_builtin_configs(); | |
68 | 1 | BUG_ON(!str.buffer); | |
69 | 1 | ExitCode e = ec_write_stdout(str.buffer, str.len); | |
70 | 1 | string_free(&str); | |
71 | 1 | return e; | |
72 | } | ||
73 | |||
74 | 2 | static ExitCode dump_builtin_config(const char *name) | |
75 | { | ||
76 | 2 | const BuiltinConfig *cfg = get_builtin_config(name); | |
77 |
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2 | if (!cfg) { |
78 | 1 | return ec_usage_error("no built-in config with name '%s'", name); | |
79 | } | ||
80 | 1 | return ec_write_stdout(cfg->text.data, cfg->text.length); | |
81 | } | ||
82 | |||
83 | 2 | static ExitCode lint_syntax(const char *filename, bool extra_lint) | |
84 | { | ||
85 | 2 | EditorState *e = init_editor_state(getenv("HOME"), getenv("DTE_HOME")); | |
86 | 2 | e->err.print_to_stderr = true; | |
87 | 2 | BUG_ON(e->status != EDITOR_INITIALIZING); | |
88 | |||
89 |
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2 | SyntaxLoadFlags flags = SYN_MUST_EXIST | (extra_lint ? SYN_LINT : 0); |
90 | 2 | const Syntax *syntax = load_syntax_file(e, filename, flags); | |
91 |
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2 | bool ok = syntax && e->err.nr_errors == 0; |
92 | |||
93 | 1 | if (ok) { | |
94 | 1 | const size_t n = syntax->states.count; | |
95 |
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1 | const char *plural = (n == 1) ? "" : "s"; |
96 | 1 | const char *name = syntax->name; | |
97 | 1 | printf("OK: loaded syntax '%s' with %zu state%s\n", name, n, plural); | |
98 | } | ||
99 | |||
100 | 2 | free_editor_state(e); | |
101 |
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2 | return ok ? EC_OK : EC_DATA_ERROR; |
102 | } | ||
103 | |||
104 | 1 | static ExitCode init_std_fds(int std_fds[2]) | |
105 | { | ||
106 | 1 | FILE *streams[3] = {stdin, stdout, stderr}; | |
107 |
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1 | for (int i = 0; i < ARRAYLEN(streams); i++) { |
108 |
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1 | if (is_controlling_tty(i)) { |
109 | ✗ | continue; | |
110 | } | ||
111 | |||
112 |
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1 | if (i < STDERR_FILENO) { |
113 | // Try to create a duplicate fd for redirected stdin/stdout; to | ||
114 | // allow reading/writing after freopen(3) closes the original | ||
115 | 1 | int fd = fcntl(i, F_DUPFD_CLOEXEC, 3); | |
116 |
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1 | if (fd == -1 && errno != EBADF) { |
117 | ✗ | return ec_error("fcntl", EC_OS_ERROR); | |
118 | } | ||
119 | 1 | std_fds[i] = fd; | |
120 | } | ||
121 | |||
122 | // Ensure standard streams are connected to the terminal during | ||
123 | // editor operation, regardless of how they were redirected | ||
124 |
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2 | if (unlikely(!freopen("/dev/tty", i ? "w" : "r", streams[i]))) { |
125 | 1 | const char *err = strerror(errno); | |
126 | 1 | fprintf(stderr, "Failed to open /dev/tty for fd %d: %s\n", i, err); | |
127 | 1 | return EC_IO_ERROR; | |
128 | } | ||
129 | |||
130 | ✗ | int new_fd = fileno(streams[i]); | |
131 | ✗ | if (unlikely(new_fd != i)) { | |
132 | // This should never happen in a single-threaded program. | ||
133 | // freopen() should call fclose() followed by open() and | ||
134 | // POSIX requires a successful call to open() to return the | ||
135 | // lowest available file descriptor. | ||
136 | ✗ | fprintf(stderr, "freopen() changed fd from %d to %d\n", i, new_fd); | |
137 | ✗ | return EC_OS_ERROR; | |
138 | } | ||
139 | |||
140 | ✗ | if (unlikely(!is_controlling_tty(new_fd))) { | |
141 | ✗ | return ec_error("tcgetpgrp", EC_OS_ERROR); | |
142 | } | ||
143 | } | ||
144 | |||
145 | return EC_OK; | ||
146 | } | ||
147 | |||
148 | 8 | static ExitCode init_std_fds_headless(int std_fds[2]) | |
149 | { | ||
150 | 8 | FILE *streams[] = {stdin, stdout}; | |
151 |
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24 | for (int i = 0; i < ARRAYLEN(streams); i++) { |
152 |
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16 | if (!isatty(i)) { |
153 | // Try to duplicate redirected stdin/stdout, as described | ||
154 | // in init_std_fds() | ||
155 | 16 | int fd = fcntl(i, F_DUPFD_CLOEXEC, 3); | |
156 |
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16 | if (fd == -1 && errno != EBADF) { |
157 | ✗ | return ec_error("fcntl", EC_OS_ERROR); | |
158 | } | ||
159 | 16 | std_fds[i] = fd; | |
160 | } | ||
161 | // Always reopen stdin and stdout as /dev/null, regardless of | ||
162 | // whether they were duplicated above | ||
163 |
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24 | if (!freopen("/dev/null", i ? "w" : "r", streams[i])) { |
164 | ✗ | return ec_error("freopen", EC_IO_ERROR); | |
165 | } | ||
166 | } | ||
167 | |||
168 |
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8 | if (!fd_is_valid(STDERR_FILENO)) { |
169 | // If FD 2 isn't valid (e.g. because it was closed), point it | ||
170 | // to /dev/null to ensure open(3) doesn't allocate it to other | ||
171 | // opened files | ||
172 | ✗ | if (!freopen("/dev/null", "w", stderr)) { | |
173 | ✗ | return ec_error("freopen", EC_IO_ERROR); | |
174 | } | ||
175 | } | ||
176 | |||
177 | return EC_OK; | ||
178 | } | ||
179 | |||
180 | // Open special Buffers for duplicated stdin and/or stdout FDs, as created | ||
181 | // by init_std_fds() | ||
182 | 8 | static Buffer *init_std_buffer(EditorState *e, int fds[2]) | |
183 | { | ||
184 | 8 | const char *name = NULL; | |
185 | 8 | Buffer *buffer = NULL; | |
186 | |||
187 |
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8 | if (fds[STDIN_FILENO] >= 3) { |
188 | 8 | buffer = buffer_new(&e->buffers, &e->options, encoding_from_type(UTF8)); | |
189 |
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8 | if (read_blocks(buffer, fds[STDIN_FILENO], false)) { |
190 | 8 | name = "(stdin)"; | |
191 | 8 | buffer->temporary = true; | |
192 | } else { | ||
193 | ✗ | error_msg(&e->err, "Unable to read redirected stdin"); | |
194 | ✗ | buffer_remove_unlock_and_free(&e->buffers, buffer, &e->err, &e->locks_ctx); | |
195 | ✗ | buffer = NULL; | |
196 | } | ||
197 | } | ||
198 | |||
199 |
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8 | if (fds[STDOUT_FILENO] >= 3) { |
200 |
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8 | if (!buffer) { |
201 | ✗ | buffer = open_empty_buffer(&e->buffers, &e->options); | |
202 | ✗ | name = "(stdout)"; | |
203 | } else { | ||
204 | name = "(stdin|stdout)"; | ||
205 | } | ||
206 | 8 | buffer->stdout_buffer = true; | |
207 | 8 | buffer->temporary = true; | |
208 | } | ||
209 | |||
210 | 8 | BUG_ON(!buffer != !name); | |
211 |
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8 | if (name) { |
212 | 8 | buffer_set_display_filename(buffer, xstrdup(name)); | |
213 | } | ||
214 | |||
215 | 8 | return buffer; | |
216 | } | ||
217 | |||
218 | // Write the contents of the special `stdout` Buffer (as created by | ||
219 | // init_std_buffer()) to `stdout` and free its remaining allocations | ||
220 | 8 | static int buffer_write_blocks_and_free(Buffer *buffer, int fd) | |
221 | { | ||
222 | 8 | BUG_ON(!buffer->stdout_buffer); | |
223 | 8 | const Block *blk; | |
224 | 8 | int err = 0; | |
225 | |||
226 |
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16 | block_for_each(blk, &buffer->blocks) { |
227 |
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8 | if (xwrite_all(fd, blk->data, blk->size) < 0) { |
228 | ✗ | err = errno; | |
229 | ✗ | break; | |
230 | } | ||
231 | } | ||
232 | |||
233 | // Other allocations for `buffer` should have already been freed | ||
234 | // by buffer_unlock_and_free() | ||
235 | 8 | free_blocks(buffer); | |
236 | 8 | free(buffer); | |
237 | 8 | return err; | |
238 | } | ||
239 | |||
240 | ✗ | static void init_trace_logging(LogLevel level) | |
241 | { | ||
242 | ✗ | if (!TRACE_LOGGING_ENABLED || level < LOG_LEVEL_TRACE) { | |
243 | return; | ||
244 | } | ||
245 | |||
246 | ✗ | const char *flagstr = xgetenv("DTE_LOG_TRACE"); | |
247 | ✗ | if (!flagstr) { | |
248 | ✗ | LOG_NOTICE("DTE_LOG_LEVEL=trace used with no effect; DTE_LOG_TRACE also needed"); | |
249 | ✗ | return; | |
250 | } | ||
251 | |||
252 | ✗ | TraceLoggingFlags flags = trace_flags_from_str(flagstr); | |
253 | ✗ | if (!flags) { | |
254 | ✗ | LOG_WARNING("no known flags in DTE_LOG_TRACE='%s'", flagstr); | |
255 | ✗ | return; | |
256 | } | ||
257 | |||
258 | ✗ | LOG_INFO("DTE_LOG_TRACE=%s", flagstr); | |
259 | ✗ | set_trace_logging_flags(flags); | |
260 | } | ||
261 | |||
262 | 8 | static ExitCode init_logging(void) | |
263 | { | ||
264 | 8 | const char *filename = xgetenv("DTE_LOG"); | |
265 |
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8 | if (!filename) { |
266 | return EC_OK; | ||
267 | } | ||
268 | |||
269 | ✗ | const char *req_level_str = getenv("DTE_LOG_LEVEL"); | |
270 | ✗ | LogLevel req_level = log_level_from_str(req_level_str); | |
271 | ✗ | if (req_level == LOG_LEVEL_NONE) { | |
272 | return EC_OK; | ||
273 | } | ||
274 | ✗ | if (req_level == LOG_LEVEL_INVALID) { | |
275 | ✗ | return ec_usage_error("invalid $DTE_LOG_LEVEL value: '%s'", req_level_str); | |
276 | } | ||
277 | |||
278 | ✗ | const char *no_color = xgetenv("NO_COLOR"); // https://no-color.org/ | |
279 | ✗ | LogLevel got_level = log_open(filename, req_level, !no_color); | |
280 | ✗ | if (got_level == LOG_LEVEL_NONE) { | |
281 | ✗ | const char *err = strerror(errno); | |
282 | ✗ | fprintf(stderr, "Failed to open $DTE_LOG (%s): %s\n", filename, err); | |
283 | ✗ | return EC_IO_ERROR; | |
284 | } | ||
285 | |||
286 | ✗ | const char *got_level_str = log_level_to_str(got_level); | |
287 | ✗ | if (got_level != req_level) { | |
288 | ✗ | const char *r = req_level_str; | |
289 | ✗ | const char *g = got_level_str; | |
290 | ✗ | LOG_WARNING("log level '%s' unavailable; falling back to '%s'", r, g); | |
291 | } | ||
292 | |||
293 | ✗ | LOG_INFO("logging to '%s' (level: %s)", filename, got_level_str); | |
294 | |||
295 | ✗ | if (no_color) { | |
296 | ✗ | LOG_INFO("log colors disabled ($NO_COLOR)"); | |
297 | } | ||
298 | |||
299 | ✗ | init_trace_logging(got_level); | |
300 | ✗ | return EC_OK; | |
301 | } | ||
302 | |||
303 | ✗ | static void read_history_files(EditorState *e, bool headless) | |
304 | { | ||
305 | ✗ | const char *dir = e->user_config_dir; | |
306 | ✗ | size_t size_limit = 64u << 20; // 64 MiB | |
307 | ✗ | file_history_load(&e->file_history, &e->err, path_join(dir, "file-history"), size_limit); | |
308 | ✗ | history_load(&e->command_history, &e->err, path_join(dir, "command-history"), size_limit); | |
309 | ✗ | history_load(&e->search_history, &e->err, path_join(dir, "search-history"), size_limit); | |
310 | |||
311 | // There's not much sense in saving history for headless sessions, but we | ||
312 | // do still load it (above), to make it available to e.g. `exec -i command` | ||
313 | ✗ | if (!headless) { | |
314 | ✗ | e->flags |= EFLAG_ALL_HIST; | |
315 | } | ||
316 | |||
317 | ✗ | if (e->search_history.last) { | |
318 | ✗ | search_set_regexp(&e->search, e->search_history.last->text); | |
319 | } | ||
320 | ✗ | } | |
321 | |||
322 | 8 | static void write_history_files(EditorState *e) | |
323 | { | ||
324 | 8 | EditorFlags flags = e->flags; | |
325 |
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8 | if (flags & EFLAG_CMD_HIST) { |
326 | ✗ | history_save(&e->command_history, &e->err); | |
327 | } | ||
328 |
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8 | if (flags & EFLAG_SEARCH_HIST) { |
329 | ✗ | history_save(&e->search_history, &e->err); | |
330 | } | ||
331 |
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8 | if (flags & EFLAG_FILE_HIST) { |
332 | ✗ | file_history_save(&e->file_history, &e->err); | |
333 | } | ||
334 | 8 | } | |
335 | |||
336 | ✗ | static void lookup_tags ( | |
337 | EditorState *e, | ||
338 | const char *tags[], | ||
339 | size_t nr_tags, | ||
340 | View *closeable_default_view | ||
341 | ) { | ||
342 | ✗ | if (nr_tags == 0 || !load_tag_file(&e->tagfile, &e->err)) { | |
343 | ✗ | return; | |
344 | } | ||
345 | |||
346 | ✗ | MessageList *msgs = &e->messages[e->options.msg_tag]; | |
347 | ✗ | clear_messages(msgs); | |
348 | |||
349 | ✗ | for (size_t i = 0; i < nr_tags; i++) { | |
350 | ✗ | StringView tagname = strview_from_cstring(tags[i]); | |
351 | ✗ | tag_lookup(&e->tagfile, msgs, &e->err, &tagname, NULL); | |
352 | } | ||
353 | |||
354 | ✗ | if ( | |
355 | ✗ | activate_current_message(msgs, e->window) | |
356 | ✗ | && closeable_default_view | |
357 | ✗ | && e->window->views.count >= 2 | |
358 | ) { | ||
359 | // Close the default/empty buffer, if another buffer is opened | ||
360 | // for a tag (and no commands were executed via `-c` or `-C`) | ||
361 | ✗ | remove_view(closeable_default_view); | |
362 | } | ||
363 | } | ||
364 | |||
365 | 8 | static View *open_initial_buffers ( | |
366 | EditorState *e, | ||
367 | Buffer *std_buffer, | ||
368 | char *args[], | ||
369 | size_t nr_args | ||
370 | ) { | ||
371 | // Open files specified as command-line arguments | ||
372 | 8 | Window *window = e->window; | |
373 |
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8 | for (size_t i = 0, line = 0, col = 0; i < nr_args; i++) { |
374 | ✗ | const char *str = args[i]; | |
375 | ✗ | if (line == 0 && *str == '+' && str_to_filepos(str + 1, &line, &col)) { | |
376 | ✗ | continue; | |
377 | } | ||
378 | ✗ | View *view = window_open_buffer(window, str, false, NULL); | |
379 | ✗ | if (line == 0) { | |
380 | ✗ | continue; | |
381 | } | ||
382 | ✗ | set_view(view); | |
383 | ✗ | move_to_filepos(view, line, col); | |
384 | ✗ | line = 0; | |
385 | } | ||
386 | |||
387 |
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8 | if (std_buffer) { |
388 | // Open special buffer for redirected stdin/stdout | ||
389 | 8 | window_add_buffer(window, std_buffer); | |
390 | } | ||
391 | |||
392 | // Open default buffer, if none were opened above | ||
393 |
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8 | View *dview = window->views.count ? NULL : window_open_empty_buffer(window); |
394 | |||
395 | 8 | set_view(window_get_first_view(window)); | |
396 | 8 | return dview; | |
397 | } | ||
398 | |||
399 | static const char copyright[] = | ||
400 | "dte " VERSION "\n" | ||
401 | "(C) 2013-2024 Craig Barnes\n" | ||
402 | "(C) 2010-2015 Timo Hirvonen\n" | ||
403 | "This program is free software; you can redistribute and/or modify\n" | ||
404 | "it under the terms of the GNU General Public License version 2\n" | ||
405 | "<https://www.gnu.org/licenses/old-licenses/gpl-2.0.html>.\n" | ||
406 | "There is NO WARRANTY, to the extent permitted by law.\n"; | ||
407 | |||
408 | static const char usage[] = | ||
409 | "Usage: %s [OPTIONS] [[+LINE] FILE]...\n\n" | ||
410 | "Options:\n" | ||
411 | " -c COMMAND Run COMMAND after editor starts\n" | ||
412 | " -t CTAG Jump to source location of CTAG\n" | ||
413 | " -r RCFILE Read user config from RCFILE instead of ~/.dte/rc\n" | ||
414 | " -s FILE Validate dte-syntax commands in FILE and exit\n" | ||
415 | " -b NAME Print built-in config matching NAME and exit\n" | ||
416 | " -B Print list of built-in config names and exit\n" | ||
417 | " -H Don't load or save history files\n" | ||
418 | " -R Don't read user config file\n" | ||
419 | " -K Start editor in \"showkey\" mode\n" | ||
420 | " -h Display help summary and exit\n" | ||
421 | " -V Display version number and exit\n" | ||
422 | "\n"; | ||
423 | |||
424 | 23 | int main(int argc, char *argv[]) | |
425 | { | ||
426 | 23 | static const char optstring[] = "hBHKPRVZC:Q:S:b:c:t:r:s:"; | |
427 | 23 | const char *rc = NULL; | |
428 | 23 | const char *commands[8]; | |
429 | 23 | const char *tags[8]; | |
430 | 23 | size_t nr_commands = 0; | |
431 | 23 | size_t nr_tags = 0; | |
432 | 23 | bool headless = false; | |
433 | 23 | bool read_rc = true; | |
434 | 23 | bool load_and_save_history = true; | |
435 | 23 | bool explicit_term_query_level = false; | |
436 | 23 | unsigned int terminal_query_level = 1; | |
437 | |||
438 |
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69 | for (int ch; (ch = getopt(argc, argv, optstring)) != -1; ) { |
439 |
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60 | switch (ch) { |
440 | 14 | case 'C': | |
441 | 14 | headless = true; | |
442 | // Fallthrough | ||
443 | 19 | case 'c': | |
444 |
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19 | if (unlikely(nr_commands >= ARRAYLEN(commands))) { |
445 | 1 | return ec_usage_error("too many -c or -C options used"); | |
446 | } | ||
447 | 18 | commands[nr_commands++] = optarg; | |
448 | 18 | break; | |
449 | 9 | case 't': | |
450 |
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9 | if (unlikely(nr_tags >= ARRAYLEN(tags))) { |
451 | 1 | return ec_usage_error("too many -t options used"); | |
452 | } | ||
453 | 8 | tags[nr_tags++] = optarg; | |
454 | 8 | break; | |
455 | 2 | case 'Q': | |
456 |
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2 | if (!str_to_uint(optarg, &terminal_query_level)) { |
457 | 1 | return ec_usage_error("invalid argument for -Q: '%s'", optarg); | |
458 | } | ||
459 | explicit_term_query_level = true; | ||
460 | break; | ||
461 | case 'H': load_and_save_history = false; break; | ||
462 | 3 | case 'r': rc = optarg; break; | |
463 | 7 | case 'R': read_rc = false; break; | |
464 | 2 | case 'b': return dump_builtin_config(optarg); | |
465 | 1 | case 'B': return list_builtin_configs(); | |
466 | 1 | case 'h': return ec_printf_ok(usage, progname(argc, argv, "dte")); | |
467 | ✗ | case 'K': return showkey_loop(terminal_query_level); | |
468 | 1 | case 'P': return print_256_color_palette(); | |
469 | 2 | case 's': return lint_syntax(optarg, false); | |
470 | ✗ | case 'S': return lint_syntax(optarg, true); | |
471 | 1 | case 'V': return ec_write_stdout(copyright, sizeof(copyright)); | |
472 | 1 | case 'Z': return ec_printf_ok("features:%s\n", buildvar_string); | |
473 | default: return EC_USAGE_ERROR; | ||
474 | } | ||
475 | } | ||
476 | |||
477 | // stdio(3) fds must be handled before calling init_logging(), otherwise | ||
478 | // an invocation like e.g. `DTE_LOG=/dev/pts/2 dte 0<&-` could cause the | ||
479 | // logging fd to be opened as STDIN_FILENO | ||
480 | 9 | int std_fds[2] = {-1, -1}; | |
481 |
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9 | ExitCode r = headless ? init_std_fds_headless(std_fds) : init_std_fds(std_fds); |
482 |
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9 | r = r ? r : init_logging(); |
483 |
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8 | if (unlikely(r)) { |
484 | 1 | return r; | |
485 | } | ||
486 | |||
487 | 8 | struct utsname u; | |
488 |
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8 | if (likely(uname(&u) >= 0)) { |
489 | 8 | LOG_INFO("system: %s/%s %s", u.sysname, u.machine, u.release); | |
490 |
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8 | if ( |
491 | !headless | ||
492 | && !explicit_term_query_level | ||
493 | ✗ | && str_has_suffix(u.release, "-WSL2") | |
494 | ) { | ||
495 | // There appears to be an issue on WSL2 where the DA1 query | ||
496 | // response is interpreted as pasted text and then inserted | ||
497 | // into the buffer at startup. For now, we simply disable | ||
498 | // querying entirely on that platform, until the problem | ||
499 | // can be investigated. | ||
500 | ✗ | LOG_NOTICE("WSL2 detected; disabling all terminal queries"); | |
501 | ✗ | terminal_query_level = 0; | |
502 | } | ||
503 | } else { | ||
504 | ✗ | LOG_ERRNO("uname"); | |
505 | } | ||
506 | |||
507 | 8 | LOG_INFO("dte version: " VERSION); | |
508 | 8 | LOG_INFO("build vars:%s", buildvar_string); | |
509 | |||
510 |
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8 | if (headless) { |
511 | 8 | set_signal_dispositions_headless(); | |
512 | } else { | ||
513 | ✗ | set_basic_signal_dispositions(); | |
514 | } | ||
515 | |||
516 | // Note that we don't unset EFLAG_HEADLESS in e->flags until later | ||
517 | // (regardless of whether -C was used), because the terminal isn't | ||
518 | // properly initialized yet and we don't want commands running via | ||
519 | // -c or -C -interacting with it | ||
520 | 8 | EditorState *e = init_editor_state(getenv("HOME"), getenv("DTE_HOME")); | |
521 | |||
522 | 8 | Terminal *term = &e->terminal; | |
523 |
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8 | if (!headless) { |
524 | ✗ | term_init(term, getenv("TERM"), getenv("COLORTERM")); | |
525 | } | ||
526 | |||
527 | 8 | e->err.print_to_stderr = true; | |
528 | 8 | Buffer *std_buffer = init_std_buffer(e, std_fds); | |
529 |
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8 | bool have_stdout_buffer = std_buffer && std_buffer->stdout_buffer; |
530 | |||
531 | // Create this early (needed if "lock-files" is true) | ||
532 | 8 | const char *cfgdir = e->user_config_dir; | |
533 | 8 | BUG_ON(!cfgdir); | |
534 |
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8 | if (mkdir(cfgdir, 0755) != 0 && errno != EEXIST) { |
535 | ✗ | error_msg(&e->err, "Error creating %s: %s", cfgdir, strerror(errno)); | |
536 | ✗ | load_and_save_history = false; | |
537 | ✗ | e->options.lock_files = false; | |
538 | } | ||
539 | |||
540 | 8 | exec_rc_files(e, rc, read_rc); | |
541 | |||
542 | 8 | e->window = new_window(e); | |
543 | 8 | e->root_frame = new_root_frame(e->window); | |
544 | |||
545 |
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8 | if (load_and_save_history) { |
546 | ✗ | read_history_files(e, headless); | |
547 | } | ||
548 | |||
549 | 8 | e->status = EDITOR_RUNNING; | |
550 | 8 | e->err.print_to_stderr = headless; | |
551 | 8 | View *dview = open_initial_buffers(e, std_buffer, argv + optind, argc - optind); | |
552 | 8 | e->err.print_to_stderr = true; | |
553 | |||
554 |
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8 | if (!headless) { |
555 | // This is done before executing `-c` commands, so that the | ||
556 | // `exec` command can set $LINES and $COLUMNS appropriately | ||
557 | ✗ | update_screen_size(term, e->root_frame); | |
558 | } | ||
559 | |||
560 |
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16 | for (size_t i = 0; i < nr_commands; i++) { |
561 | 8 | handle_normal_command(e, commands[i], false); | |
562 | } | ||
563 | |||
564 | 8 | bool fast_exit = e->status != EDITOR_RUNNING; | |
565 |
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8 | if (headless || fast_exit) { |
566 | // Headless mode implicitly exits after commands have finished | ||
567 | // running. We may also exit here (without drawing the UI, | ||
568 | // emitting terminal queries or entering main_loop()) if a `-c` | ||
569 | // command has already quit the editor. This prevents commands | ||
570 | // like e.g. `dte -HR -cquit` from emitting terminal queries | ||
571 | // and exiting before the responses have been read (which would | ||
572 | // typically cause the parent shell process to read them | ||
573 | // instead). | ||
574 | 8 | goto exit; | |
575 | } | ||
576 | |||
577 | ✗ | e->err.print_to_stderr = false; | |
578 | ✗ | lookup_tags(e, tags, nr_tags, nr_commands ? NULL : dview); | |
579 | |||
580 | ✗ | set_fatal_error_cleanup_handler(cleanup_handler, e); | |
581 | ✗ | set_fatal_signal_handlers(); | |
582 | ✗ | set_sigwinch_handler(); | |
583 | |||
584 | ✗ | bool init = term_mode_init(); | |
585 | ✗ | if (unlikely(!init || !term_raw())) { | |
586 | ✗ | e->status = ec_error(init ? "tcsetattr" : "tcgetattr", EC_IO_ERROR); | |
587 | ✗ | fast_exit = true; | |
588 | ✗ | goto exit; | |
589 | } | ||
590 | |||
591 | ✗ | if (e->err.stderr_errors_printed) { | |
592 | // Display "press any key to continue" prompt for stderr errors | ||
593 | ✗ | any_key(term, e->options.esc_timeout); | |
594 | ✗ | clear_error(&e->err); | |
595 | } | ||
596 | |||
597 | // Enable main_loop() iteration timing if $DTE_LOG_TIMING is set | ||
598 | // and logging is enabled. In theory, this could be controlled by | ||
599 | // `TraceLoggingFlags`, but trace logging is only enabled in debug | ||
600 | // builds, whereas latency timing is most useful in release builds. | ||
601 | ✗ | bool timing = log_level_enabled(LOG_LEVEL_INFO) && xgetenv("DTE_LOG_TIMING"); | |
602 | |||
603 | ✗ | e->flags &= ~EFLAG_HEADLESS; // See comment for init_editor_state() call above | |
604 | ✗ | ui_first_start(e, terminal_query_level); | |
605 | ✗ | main_loop(e, timing); | |
606 | ✗ | term_restore_title(term); | |
607 | |||
608 | /* | ||
609 | * This is normally followed immediately by term_cooked() in other | ||
610 | * contexts, but in this case we want to switch back to cooked mode | ||
611 | * as late as possible. On underpowered machines, unlocking files and | ||
612 | * writing history may take some time. If cooked mode were switched | ||
613 | * to here it'd leave a window of time where we've switched back to | ||
614 | * the normal screen buffer and reset the termios ECHO flag while | ||
615 | * still being the foreground process, which would cause any input | ||
616 | * to be echoed to the terminal (before the shell takes over again | ||
617 | * and prints its prompt). | ||
618 | */ | ||
619 | ✗ | ui_end(e, true); | |
620 | |||
621 | 8 | exit: | |
622 | 8 | e->err.print_to_stderr = true; | |
623 | 8 | frame_remove(e, e->root_frame); // Unlock files and add to file history | |
624 | 8 | write_history_files(e); | |
625 | 8 | int exit_code = MAX(e->status, EDITOR_EXIT_OK); | |
626 | |||
627 |
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8 | if (!headless && !fast_exit) { |
628 | // This must be done before calling buffer_write_blocks_and_free(), | ||
629 | // since output modes need to be restored to get proper line ending | ||
630 | // translation and std_fds[STDOUT_FILENO] may be a pipe to the | ||
631 | // terminal | ||
632 | ✗ | term_cooked(); | |
633 | } | ||
634 | |||
635 |
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8 | if (have_stdout_buffer) { |
636 | 8 | int err = buffer_write_blocks_and_free(std_buffer, std_fds[STDOUT_FILENO]); | |
637 |
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8 | if (err != 0) { |
638 | ✗ | error_msg(&e->err, "failed to write (stdout) buffer: %s", strerror(err)); | |
639 | ✗ | if (exit_code == EDITOR_EXIT_OK) { | |
640 | ✗ | exit_code = EC_IO_ERROR; | |
641 | } | ||
642 | } | ||
643 | } | ||
644 | |||
645 | 8 | if (DEBUG >= 1 || ASAN_ENABLED || xgetenv(ld_preload_env_var())) { | |
646 | // Only free EditorState in debug builds or when a library/tool is | ||
647 | // checking for leaks; otherwise it's pointless to do so immediately | ||
648 | // before exiting | ||
649 | 8 | free_editor_state(e); | |
650 | } | ||
651 | |||
652 | 8 | LOG_INFO("exiting with status %d", exit_code); | |
653 | 8 | log_close(); | |
654 | 8 | return exit_code; | |
655 | } | ||
656 |