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Commit | Line | Data |
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c09df8a7 PH |
1 | /* |
2 | * Copyright 2008 Peter Harris <git@peter.is-a-geek.org> | |
3 | */ | |
4 | ||
1edeb9ab | 5 | #undef NOGDI |
05cd988d | 6 | |
c09df8a7 | 7 | #include "../git-compat-util.h" |
1edeb9ab KB |
8 | #include <wingdi.h> |
9 | #include <winreg.h> | |
a9b8a09c | 10 | #include "win32.h" |
4fa42df9 | 11 | #include "win32/lazyload.h" |
c09df8a7 | 12 | |
a9b8a09c JH |
13 | static int fd_is_interactive[3] = { 0, 0, 0 }; |
14 | #define FD_CONSOLE 0x1 | |
15 | #define FD_SWAPPED 0x2 | |
16 | #define FD_MSYS 0x4 | |
cbb3f3c9 | 17 | |
c09df8a7 PH |
18 | /* |
19 | ANSI codes used by git: m, K | |
20 | ||
21 | This file is git-specific. Therefore, this file does not attempt | |
22 | to implement any codes that are not used by git. | |
c09df8a7 PH |
23 | */ |
24 | ||
25 | static HANDLE console; | |
26 | static WORD plain_attr; | |
27 | static WORD attr; | |
28 | static int negative; | |
eac14f89 KB |
29 | static int non_ascii_used = 0; |
30 | static HANDLE hthread, hread, hwrite; | |
eac14f89 | 31 | static HANDLE hconsole1, hconsole2; |
c09df8a7 | 32 | |
1edeb9ab | 33 | #ifdef __MINGW32__ |
466931d9 | 34 | #if !defined(__MINGW64_VERSION_MAJOR) || __MINGW64_VERSION_MAJOR < 5 |
1edeb9ab KB |
35 | typedef struct _CONSOLE_FONT_INFOEX { |
36 | ULONG cbSize; | |
37 | DWORD nFont; | |
38 | COORD dwFontSize; | |
39 | UINT FontFamily; | |
40 | UINT FontWeight; | |
41 | WCHAR FaceName[LF_FACESIZE]; | |
42 | } CONSOLE_FONT_INFOEX, *PCONSOLE_FONT_INFOEX; | |
43 | #endif | |
466931d9 | 44 | #endif |
1edeb9ab | 45 | |
eac14f89 | 46 | static void warn_if_raster_font(void) |
1edeb9ab | 47 | { |
1edeb9ab | 48 | DWORD fontFamily = 0; |
4a9b2049 MA |
49 | DECLARE_PROC_ADDR(kernel32.dll, BOOL, WINAPI, |
50 | GetCurrentConsoleFontEx, HANDLE, BOOL, | |
51 | PCONSOLE_FONT_INFOEX); | |
1edeb9ab | 52 | |
eac14f89 KB |
53 | /* don't bother if output was ascii only */ |
54 | if (!non_ascii_used) | |
1edeb9ab | 55 | return; |
1edeb9ab KB |
56 | |
57 | /* GetCurrentConsoleFontEx is available since Vista */ | |
4fa42df9 | 58 | if (INIT_PROC_ADDR(GetCurrentConsoleFontEx)) { |
1edeb9ab KB |
59 | CONSOLE_FONT_INFOEX cfi; |
60 | cfi.cbSize = sizeof(cfi); | |
4fa42df9 | 61 | if (GetCurrentConsoleFontEx(console, 0, &cfi)) |
1edeb9ab KB |
62 | fontFamily = cfi.FontFamily; |
63 | } else { | |
64 | /* pre-Vista: check default console font in registry */ | |
65 | HKEY hkey; | |
eac14f89 KB |
66 | if (ERROR_SUCCESS == RegOpenKeyExA(HKEY_CURRENT_USER, "Console", |
67 | 0, KEY_READ, &hkey)) { | |
1edeb9ab KB |
68 | DWORD size = sizeof(fontFamily); |
69 | RegQueryValueExA(hkey, "FontFamily", NULL, NULL, | |
70 | (LPVOID) &fontFamily, &size); | |
71 | RegCloseKey(hkey); | |
72 | } | |
73 | } | |
74 | ||
eac14f89 KB |
75 | if (!(fontFamily & TMPF_TRUETYPE)) { |
76 | const wchar_t *msg = L"\nWarning: Your console font probably " | |
77 | L"doesn\'t support Unicode. If you experience strange " | |
78 | L"characters in the output, consider switching to a " | |
79 | L"TrueType font such as Consolas!\n"; | |
80 | DWORD dummy; | |
81 | WriteConsoleW(console, msg, wcslen(msg), &dummy, NULL); | |
82 | } | |
1edeb9ab KB |
83 | } |
84 | ||
eac14f89 | 85 | static int is_console(int fd) |
c09df8a7 PH |
86 | { |
87 | CONSOLE_SCREEN_BUFFER_INFO sbi; | |
fee807c5 | 88 | DWORD mode; |
143e6152 | 89 | HANDLE hcon; |
c09df8a7 PH |
90 | |
91 | static int initialized = 0; | |
c09df8a7 | 92 | |
eac14f89 KB |
93 | /* get OS handle of the file descriptor */ |
94 | hcon = (HANDLE) _get_osfhandle(fd); | |
143e6152 KB |
95 | if (hcon == INVALID_HANDLE_VALUE) |
96 | return 0; | |
97 | ||
eac14f89 KB |
98 | /* check if its a device (i.e. console, printer, serial port) */ |
99 | if (GetFileType(hcon) != FILE_TYPE_CHAR) | |
100 | return 0; | |
101 | ||
143e6152 | 102 | /* check if its a handle to a console output screen buffer */ |
fee807c5 JS |
103 | if (!fd) { |
104 | if (!GetConsoleMode(hcon, &mode)) | |
105 | return 0; | |
3057da5a JS |
106 | /* |
107 | * This code path is only reached if there is no console | |
108 | * attached to stdout/stderr, i.e. we will not need to output | |
109 | * any text to any console, therefore we might just as well | |
110 | * use black as foreground color. | |
111 | */ | |
112 | sbi.wAttributes = 0; | |
fee807c5 | 113 | } else if (!GetConsoleScreenBufferInfo(hcon, &sbi)) |
143e6152 KB |
114 | return 0; |
115 | ||
a9b8a09c JH |
116 | if (fd >= 0 && fd <= 2) |
117 | fd_is_interactive[fd] |= FD_CONSOLE; | |
118 | ||
eac14f89 | 119 | /* initialize attributes */ |
143e6152 | 120 | if (!initialized) { |
fcd428f4 | 121 | console = hcon; |
143e6152 KB |
122 | attr = plain_attr = sbi.wAttributes; |
123 | negative = 0; | |
124 | initialized = 1; | |
125 | } | |
c09df8a7 | 126 | |
143e6152 | 127 | return 1; |
c09df8a7 PH |
128 | } |
129 | ||
eac14f89 KB |
130 | #define BUFFER_SIZE 4096 |
131 | #define MAX_PARAMS 16 | |
132 | ||
133 | static void write_console(unsigned char *str, size_t len) | |
617ce965 | 134 | { |
eac14f89 KB |
135 | /* only called from console_thread, so a static buffer will do */ |
136 | static wchar_t wbuf[2 * BUFFER_SIZE + 1]; | |
137 | DWORD dummy; | |
617ce965 | 138 | |
eac14f89 KB |
139 | /* convert utf-8 to utf-16 */ |
140 | int wlen = xutftowcsn(wbuf, (char*) str, ARRAY_SIZE(wbuf), len); | |
b6b066ad JS |
141 | if (wlen < 0) { |
142 | wchar_t *err = L"[invalid]"; | |
143 | WriteConsoleW(console, err, wcslen(err), &dummy, NULL); | |
144 | return; | |
145 | } | |
617ce965 | 146 | |
eac14f89 KB |
147 | /* write directly to console */ |
148 | WriteConsoleW(console, wbuf, wlen, &dummy, NULL); | |
1edeb9ab | 149 | |
eac14f89 KB |
150 | /* remember if non-ascii characters are printed */ |
151 | if (wlen != len) | |
152 | non_ascii_used = 1; | |
617ce965 | 153 | } |
c09df8a7 PH |
154 | |
155 | #define FOREGROUND_ALL (FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE) | |
156 | #define BACKGROUND_ALL (BACKGROUND_RED | BACKGROUND_GREEN | BACKGROUND_BLUE) | |
157 | ||
158 | static void set_console_attr(void) | |
159 | { | |
160 | WORD attributes = attr; | |
161 | if (negative) { | |
162 | attributes &= ~FOREGROUND_ALL; | |
163 | attributes &= ~BACKGROUND_ALL; | |
164 | ||
165 | /* This could probably use a bitmask | |
166 | instead of a series of ifs */ | |
167 | if (attr & FOREGROUND_RED) | |
168 | attributes |= BACKGROUND_RED; | |
169 | if (attr & FOREGROUND_GREEN) | |
170 | attributes |= BACKGROUND_GREEN; | |
171 | if (attr & FOREGROUND_BLUE) | |
172 | attributes |= BACKGROUND_BLUE; | |
173 | ||
174 | if (attr & BACKGROUND_RED) | |
175 | attributes |= FOREGROUND_RED; | |
176 | if (attr & BACKGROUND_GREEN) | |
177 | attributes |= FOREGROUND_GREEN; | |
178 | if (attr & BACKGROUND_BLUE) | |
179 | attributes |= FOREGROUND_BLUE; | |
180 | } | |
181 | SetConsoleTextAttribute(console, attributes); | |
182 | } | |
183 | ||
1897713f JS |
184 | static void erase_in_line(void) |
185 | { | |
186 | CONSOLE_SCREEN_BUFFER_INFO sbi; | |
492f7091 | 187 | DWORD dummy; /* Needed for Windows 7 (or Vista) regression */ |
1897713f JS |
188 | |
189 | if (!console) | |
190 | return; | |
191 | ||
192 | GetConsoleScreenBufferInfo(console, &sbi); | |
193 | FillConsoleOutputCharacterA(console, ' ', | |
194 | sbi.dwSize.X - sbi.dwCursorPosition.X, sbi.dwCursorPosition, | |
492f7091 | 195 | &dummy); |
1897713f JS |
196 | } |
197 | ||
eac14f89 | 198 | static void set_attr(char func, const int *params, int paramlen) |
c09df8a7 | 199 | { |
eac14f89 KB |
200 | int i; |
201 | switch (func) { | |
c09df8a7 | 202 | case 'm': |
eac14f89 KB |
203 | for (i = 0; i < paramlen; i++) { |
204 | switch (params[i]) { | |
c09df8a7 PH |
205 | case 0: /* reset */ |
206 | attr = plain_attr; | |
207 | negative = 0; | |
208 | break; | |
209 | case 1: /* bold */ | |
210 | attr |= FOREGROUND_INTENSITY; | |
211 | break; | |
212 | case 2: /* faint */ | |
213 | case 22: /* normal */ | |
214 | attr &= ~FOREGROUND_INTENSITY; | |
215 | break; | |
216 | case 3: /* italic */ | |
217 | /* Unsupported */ | |
218 | break; | |
219 | case 4: /* underline */ | |
220 | case 21: /* double underline */ | |
221 | /* Wikipedia says this flag does nothing */ | |
222 | /* Furthermore, mingw doesn't define this flag | |
223 | attr |= COMMON_LVB_UNDERSCORE; */ | |
224 | break; | |
225 | case 24: /* no underline */ | |
226 | /* attr &= ~COMMON_LVB_UNDERSCORE; */ | |
227 | break; | |
228 | case 5: /* slow blink */ | |
229 | case 6: /* fast blink */ | |
230 | /* We don't have blink, but we do have | |
231 | background intensity */ | |
232 | attr |= BACKGROUND_INTENSITY; | |
233 | break; | |
234 | case 25: /* no blink */ | |
235 | attr &= ~BACKGROUND_INTENSITY; | |
236 | break; | |
237 | case 7: /* negative */ | |
238 | negative = 1; | |
239 | break; | |
240 | case 27: /* positive */ | |
241 | negative = 0; | |
242 | break; | |
243 | case 8: /* conceal */ | |
244 | case 28: /* reveal */ | |
245 | /* Unsupported */ | |
246 | break; | |
247 | case 30: /* Black */ | |
248 | attr &= ~FOREGROUND_ALL; | |
249 | break; | |
250 | case 31: /* Red */ | |
251 | attr &= ~FOREGROUND_ALL; | |
252 | attr |= FOREGROUND_RED; | |
253 | break; | |
254 | case 32: /* Green */ | |
255 | attr &= ~FOREGROUND_ALL; | |
256 | attr |= FOREGROUND_GREEN; | |
257 | break; | |
258 | case 33: /* Yellow */ | |
259 | attr &= ~FOREGROUND_ALL; | |
260 | attr |= FOREGROUND_RED | FOREGROUND_GREEN; | |
261 | break; | |
262 | case 34: /* Blue */ | |
263 | attr &= ~FOREGROUND_ALL; | |
264 | attr |= FOREGROUND_BLUE; | |
265 | break; | |
266 | case 35: /* Magenta */ | |
267 | attr &= ~FOREGROUND_ALL; | |
268 | attr |= FOREGROUND_RED | FOREGROUND_BLUE; | |
269 | break; | |
270 | case 36: /* Cyan */ | |
271 | attr &= ~FOREGROUND_ALL; | |
272 | attr |= FOREGROUND_GREEN | FOREGROUND_BLUE; | |
273 | break; | |
274 | case 37: /* White */ | |
275 | attr |= FOREGROUND_RED | | |
276 | FOREGROUND_GREEN | | |
277 | FOREGROUND_BLUE; | |
278 | break; | |
279 | case 38: /* Unknown */ | |
280 | break; | |
281 | case 39: /* reset */ | |
282 | attr &= ~FOREGROUND_ALL; | |
283 | attr |= (plain_attr & FOREGROUND_ALL); | |
284 | break; | |
285 | case 40: /* Black */ | |
286 | attr &= ~BACKGROUND_ALL; | |
287 | break; | |
288 | case 41: /* Red */ | |
289 | attr &= ~BACKGROUND_ALL; | |
290 | attr |= BACKGROUND_RED; | |
291 | break; | |
292 | case 42: /* Green */ | |
293 | attr &= ~BACKGROUND_ALL; | |
294 | attr |= BACKGROUND_GREEN; | |
295 | break; | |
296 | case 43: /* Yellow */ | |
297 | attr &= ~BACKGROUND_ALL; | |
298 | attr |= BACKGROUND_RED | BACKGROUND_GREEN; | |
299 | break; | |
300 | case 44: /* Blue */ | |
301 | attr &= ~BACKGROUND_ALL; | |
302 | attr |= BACKGROUND_BLUE; | |
303 | break; | |
304 | case 45: /* Magenta */ | |
305 | attr &= ~BACKGROUND_ALL; | |
306 | attr |= BACKGROUND_RED | BACKGROUND_BLUE; | |
307 | break; | |
308 | case 46: /* Cyan */ | |
309 | attr &= ~BACKGROUND_ALL; | |
310 | attr |= BACKGROUND_GREEN | BACKGROUND_BLUE; | |
311 | break; | |
312 | case 47: /* White */ | |
313 | attr |= BACKGROUND_RED | | |
314 | BACKGROUND_GREEN | | |
315 | BACKGROUND_BLUE; | |
316 | break; | |
317 | case 48: /* Unknown */ | |
318 | break; | |
319 | case 49: /* reset */ | |
320 | attr &= ~BACKGROUND_ALL; | |
321 | attr |= (plain_attr & BACKGROUND_ALL); | |
322 | break; | |
323 | default: | |
324 | /* Unsupported code */ | |
325 | break; | |
326 | } | |
eac14f89 | 327 | } |
c09df8a7 PH |
328 | set_console_attr(); |
329 | break; | |
330 | case 'K': | |
1897713f | 331 | erase_in_line(); |
c09df8a7 PH |
332 | break; |
333 | default: | |
334 | /* Unsupported code */ | |
335 | break; | |
336 | } | |
c09df8a7 PH |
337 | } |
338 | ||
eac14f89 KB |
339 | enum { |
340 | TEXT = 0, ESCAPE = 033, BRACKET = '[' | |
341 | }; | |
c09df8a7 | 342 | |
eac14f89 KB |
343 | static DWORD WINAPI console_thread(LPVOID unused) |
344 | { | |
345 | unsigned char buffer[BUFFER_SIZE]; | |
346 | DWORD bytes; | |
347 | int start, end = 0, c, parampos = 0, state = TEXT; | |
348 | int params[MAX_PARAMS]; | |
349 | ||
350 | while (1) { | |
351 | /* read next chunk of bytes from the pipe */ | |
352 | if (!ReadFile(hread, buffer + end, BUFFER_SIZE - end, &bytes, | |
353 | NULL)) { | |
354 | /* exit if pipe has been closed or disconnected */ | |
355 | if (GetLastError() == ERROR_PIPE_NOT_CONNECTED || | |
356 | GetLastError() == ERROR_BROKEN_PIPE) | |
357 | break; | |
358 | /* ignore other errors */ | |
359 | continue; | |
360 | } | |
617ce965 | 361 | |
eac14f89 KB |
362 | /* scan the bytes and handle ANSI control codes */ |
363 | bytes += end; | |
364 | start = end = 0; | |
365 | while (end < bytes) { | |
366 | c = buffer[end++]; | |
367 | switch (state) { | |
368 | case TEXT: | |
369 | if (c == ESCAPE) { | |
370 | /* print text seen so far */ | |
371 | if (end - 1 > start) | |
372 | write_console(buffer + start, | |
373 | end - 1 - start); | |
374 | ||
375 | /* then start parsing escape sequence */ | |
376 | start = end - 1; | |
377 | memset(params, 0, sizeof(params)); | |
378 | parampos = 0; | |
379 | state = ESCAPE; | |
380 | } | |
381 | break; | |
382 | ||
383 | case ESCAPE: | |
384 | /* continue if "\033[", otherwise bail out */ | |
385 | state = (c == BRACKET) ? BRACKET : TEXT; | |
386 | break; | |
387 | ||
388 | case BRACKET: | |
389 | /* parse [0-9;]* into array of parameters */ | |
390 | if (c >= '0' && c <= '9') { | |
391 | params[parampos] *= 10; | |
392 | params[parampos] += c - '0'; | |
393 | } else if (c == ';') { | |
394 | /* | |
395 | * next parameter, bail out if out of | |
396 | * bounds | |
397 | */ | |
398 | parampos++; | |
399 | if (parampos >= MAX_PARAMS) | |
400 | state = TEXT; | |
401 | } else { | |
402 | /* | |
403 | * end of escape sequence, change | |
404 | * console attributes | |
405 | */ | |
406 | set_attr(c, params, parampos + 1); | |
407 | start = end; | |
408 | state = TEXT; | |
409 | } | |
410 | break; | |
411 | } | |
412 | } | |
c09df8a7 | 413 | |
eac14f89 KB |
414 | /* print remaining text unless parsing an escape sequence */ |
415 | if (state == TEXT && end > start) { | |
416 | /* check for incomplete UTF-8 sequences and fix end */ | |
417 | if (buffer[end - 1] >= 0x80) { | |
418 | if (buffer[end -1] >= 0xc0) | |
419 | end--; | |
420 | else if (end - 1 > start && | |
421 | buffer[end - 2] >= 0xe0) | |
422 | end -= 2; | |
423 | else if (end - 2 > start && | |
424 | buffer[end - 3] >= 0xf0) | |
425 | end -= 3; | |
c09df8a7 PH |
426 | } |
427 | ||
eac14f89 KB |
428 | /* print remaining complete UTF-8 sequences */ |
429 | if (end > start) | |
430 | write_console(buffer + start, end - start); | |
c09df8a7 | 431 | |
eac14f89 KB |
432 | /* move remaining bytes to the front */ |
433 | if (end < bytes) | |
434 | memmove(buffer, buffer + end, bytes - end); | |
435 | end = bytes - end; | |
c09df8a7 | 436 | } else { |
eac14f89 KB |
437 | /* all data has been consumed, mark buffer empty */ |
438 | end = 0; | |
c09df8a7 PH |
439 | } |
440 | } | |
c09df8a7 | 441 | |
eac14f89 KB |
442 | /* check if the console font supports unicode */ |
443 | warn_if_raster_font(); | |
c09df8a7 | 444 | |
eac14f89 KB |
445 | CloseHandle(hread); |
446 | return 0; | |
c09df8a7 PH |
447 | } |
448 | ||
eac14f89 | 449 | static void winansi_exit(void) |
c09df8a7 | 450 | { |
eac14f89 KB |
451 | /* flush all streams */ |
452 | _flushall(); | |
453 | ||
454 | /* signal console thread to exit */ | |
455 | FlushFileBuffers(hwrite); | |
456 | DisconnectNamedPipe(hwrite); | |
457 | ||
458 | /* wait for console thread to copy remaining data */ | |
459 | WaitForSingleObject(hthread, INFINITE); | |
460 | ||
461 | /* cleanup handles... */ | |
eac14f89 KB |
462 | CloseHandle(hwrite); |
463 | CloseHandle(hthread); | |
464 | } | |
c09df8a7 | 465 | |
eac14f89 KB |
466 | static void die_lasterr(const char *fmt, ...) |
467 | { | |
468 | va_list params; | |
469 | va_start(params, fmt); | |
470 | errno = err_win_to_posix(GetLastError()); | |
471 | die_errno(fmt, params); | |
472 | va_end(params); | |
473 | } | |
c09df8a7 | 474 | |
ff8978d5 JS |
475 | #undef dup2 |
476 | int winansi_dup2(int oldfd, int newfd) | |
477 | { | |
478 | int ret = dup2(oldfd, newfd); | |
479 | ||
480 | if (!ret && newfd >= 0 && newfd <= 2) | |
481 | fd_is_interactive[newfd] = oldfd < 0 || oldfd > 2 ? | |
482 | 0 : fd_is_interactive[oldfd]; | |
483 | ||
484 | return ret; | |
485 | } | |
486 | ||
eac14f89 KB |
487 | static HANDLE duplicate_handle(HANDLE hnd) |
488 | { | |
489 | HANDLE hresult, hproc = GetCurrentProcess(); | |
490 | if (!DuplicateHandle(hproc, hnd, hproc, &hresult, 0, TRUE, | |
491 | DUPLICATE_SAME_ACCESS)) | |
7c00bc39 JS |
492 | die_lasterr("DuplicateHandle(%li) failed", |
493 | (long) (intptr_t) hnd); | |
eac14f89 KB |
494 | return hresult; |
495 | } | |
c09df8a7 | 496 | |
fcd428f4 KB |
497 | static HANDLE swap_osfhnd(int fd, HANDLE new_handle) |
498 | { | |
a9b8a09c JH |
499 | /* |
500 | * Create a copy of the original handle associated with fd | |
501 | * because the original will get closed when we dup2(). | |
502 | */ | |
503 | HANDLE handle = (HANDLE)_get_osfhandle(fd); | |
504 | HANDLE duplicate = duplicate_handle(handle); | |
c09df8a7 | 505 | |
a9b8a09c JH |
506 | /* Create a temp fd associated with the already open "new_handle". */ |
507 | int new_fd = _open_osfhandle((intptr_t)new_handle, O_BINARY); | |
c09df8a7 | 508 | |
a9b8a09c | 509 | assert((fd == 1) || (fd == 2)); |
fcd428f4 | 510 | |
a9b8a09c JH |
511 | /* |
512 | * Use stock dup2() to re-bind fd to the new handle. Note that | |
513 | * this will implicitly close(1) and close both fd=1 and the | |
514 | * originally associated handle. It will open a new fd=1 and | |
515 | * call DuplicateHandle() on the handle associated with new_fd. | |
516 | * It is because of this implicit close() that we created the | |
517 | * copy of the original. | |
518 | * | |
1d3f065e JS |
519 | * Note that we need to update the cached console handle to the |
520 | * duplicated one because the dup2() call will implicitly close | |
521 | * the original one. | |
a9b8a09c JH |
522 | * |
523 | * Note that dup2() when given target := {0,1,2} will also | |
524 | * call SetStdHandle(), so we don't need to worry about that. | |
525 | */ | |
a9b8a09c JH |
526 | if (console == handle) |
527 | console = duplicate; | |
1d3f065e | 528 | dup2(new_fd, fd); |
fcd428f4 | 529 | |
a9b8a09c JH |
530 | /* Close the temp fd. This explicitly closes "new_handle" |
531 | * (because it has been associated with it). | |
532 | */ | |
533 | close(new_fd); | |
fcd428f4 | 534 | |
a4d92d57 JS |
535 | if (fd == 2) |
536 | setvbuf(stderr, NULL, _IONBF, BUFSIZ); | |
a9b8a09c | 537 | fd_is_interactive[fd] |= FD_SWAPPED; |
fcd428f4 | 538 | |
a9b8a09c | 539 | return duplicate; |
c09df8a7 PH |
540 | } |
541 | ||
f7f90e0f KB |
542 | #ifdef DETECT_MSYS_TTY |
543 | ||
544 | #include <winternl.h> | |
5f3ff780 JH |
545 | |
546 | #if defined(_MSC_VER) | |
547 | ||
548 | typedef struct _OBJECT_NAME_INFORMATION | |
549 | { | |
550 | UNICODE_STRING Name; | |
41616ef6 | 551 | WCHAR NameBuffer[FLEX_ARRAY]; |
5f3ff780 JH |
552 | } OBJECT_NAME_INFORMATION, *POBJECT_NAME_INFORMATION; |
553 | ||
554 | #define ObjectNameInformation 1 | |
555 | ||
556 | #else | |
f7f90e0f | 557 | #include <ntstatus.h> |
5f3ff780 | 558 | #endif |
f7f90e0f KB |
559 | |
560 | static void detect_msys_tty(int fd) | |
561 | { | |
562 | ULONG result; | |
563 | BYTE buffer[1024]; | |
564 | POBJECT_NAME_INFORMATION nameinfo = (POBJECT_NAME_INFORMATION) buffer; | |
565 | PWSTR name; | |
566 | ||
567 | /* check if fd is a pipe */ | |
568 | HANDLE h = (HANDLE) _get_osfhandle(fd); | |
569 | if (GetFileType(h) != FILE_TYPE_PIPE) | |
570 | return; | |
571 | ||
572 | /* get pipe name */ | |
573 | if (!NT_SUCCESS(NtQueryObject(h, ObjectNameInformation, | |
574 | buffer, sizeof(buffer) - 2, &result))) | |
575 | return; | |
576 | name = nameinfo->Name.Buffer; | |
c46458e8 | 577 | name[nameinfo->Name.Length / sizeof(*name)] = 0; |
f7f90e0f | 578 | |
86924838 AD |
579 | /* |
580 | * Check if this could be a MSYS2 pty pipe ('msys-XXXX-ptyN-XX') | |
581 | * or a cygwin pty pipe ('cygwin-XXXX-ptyN-XX') | |
582 | */ | |
583 | if ((!wcsstr(name, L"msys-") && !wcsstr(name, L"cygwin-")) || | |
584 | !wcsstr(name, L"-pty")) | |
f7f90e0f KB |
585 | return; |
586 | ||
a4d92d57 JS |
587 | if (fd == 2) |
588 | setvbuf(stderr, NULL, _IONBF, BUFSIZ); | |
a9b8a09c | 589 | fd_is_interactive[fd] |= FD_MSYS; |
f7f90e0f KB |
590 | } |
591 | ||
592 | #endif | |
593 | ||
a9b8a09c JH |
594 | /* |
595 | * Wrapper for isatty(). Most calls in the main git code | |
596 | * call isatty(1 or 2) to see if the instance is interactive | |
597 | * and should: be colored, show progress, paginate output. | |
598 | * We lie and give results for what the descriptor WAS at | |
599 | * startup (and ignore any pipe redirection we internally | |
600 | * do). | |
601 | */ | |
602 | #undef isatty | |
cbb3f3c9 JS |
603 | int winansi_isatty(int fd) |
604 | { | |
a9b8a09c JH |
605 | if (fd >= 0 && fd <= 2) |
606 | return fd_is_interactive[fd] != 0; | |
607 | return isatty(fd); | |
cbb3f3c9 JS |
608 | } |
609 | ||
eac14f89 | 610 | void winansi_init(void) |
c09df8a7 | 611 | { |
fcd428f4 | 612 | int con1, con2; |
94238859 | 613 | wchar_t name[32]; |
c09df8a7 | 614 | |
eac14f89 KB |
615 | /* check if either stdout or stderr is a console output screen buffer */ |
616 | con1 = is_console(1); | |
617 | con2 = is_console(2); | |
a9b8a09c JH |
618 | |
619 | /* Also compute console bit for fd 0 even though we don't need the result here. */ | |
620 | is_console(0); | |
621 | ||
f7f90e0f KB |
622 | if (!con1 && !con2) { |
623 | #ifdef DETECT_MSYS_TTY | |
624 | /* check if stdin / stdout / stderr are MSYS2 pty pipes */ | |
625 | detect_msys_tty(0); | |
626 | detect_msys_tty(1); | |
627 | detect_msys_tty(2); | |
628 | #endif | |
eac14f89 | 629 | return; |
f7f90e0f | 630 | } |
c09df8a7 | 631 | |
eac14f89 | 632 | /* create a named pipe to communicate with the console thread */ |
94238859 JS |
633 | if (swprintf(name, ARRAY_SIZE(name) - 1, L"\\\\.\\pipe\\winansi%lu", |
634 | GetCurrentProcessId()) < 0) | |
635 | die("Could not initialize winansi pipe name"); | |
636 | hwrite = CreateNamedPipeW(name, PIPE_ACCESS_OUTBOUND, | |
eac14f89 KB |
637 | PIPE_TYPE_BYTE | PIPE_WAIT, 1, BUFFER_SIZE, 0, 0, NULL); |
638 | if (hwrite == INVALID_HANDLE_VALUE) | |
639 | die_lasterr("CreateNamedPipe failed"); | |
640 | ||
94238859 | 641 | hread = CreateFileW(name, GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, NULL); |
eac14f89 KB |
642 | if (hread == INVALID_HANDLE_VALUE) |
643 | die_lasterr("CreateFile for named pipe failed"); | |
644 | ||
645 | /* start console spool thread on the pipe's read end */ | |
646 | hthread = CreateThread(NULL, 0, console_thread, NULL, 0, NULL); | |
592bcab6 | 647 | if (!hthread) |
eac14f89 KB |
648 | die_lasterr("CreateThread(console_thread) failed"); |
649 | ||
650 | /* schedule cleanup routine */ | |
651 | if (atexit(winansi_exit)) | |
652 | die_errno("atexit(winansi_exit) failed"); | |
653 | ||
eac14f89 KB |
654 | /* redirect stdout / stderr to the pipe */ |
655 | if (con1) | |
51822653 | 656 | hconsole1 = swap_osfhnd(1, duplicate_handle(hwrite)); |
eac14f89 | 657 | if (con2) |
51822653 | 658 | hconsole2 = swap_osfhnd(2, duplicate_handle(hwrite)); |
eac14f89 | 659 | } |
c09df8a7 | 660 | |
eac14f89 KB |
661 | /* |
662 | * Returns the real console handle if stdout / stderr is a pipe redirecting | |
663 | * to the console. Allows spawn / exec to pass the console to the next process. | |
664 | */ | |
665 | HANDLE winansi_get_osfhandle(int fd) | |
666 | { | |
c5a03b1e JS |
667 | HANDLE ret; |
668 | ||
a9b8a09c JH |
669 | if (fd == 1 && (fd_is_interactive[1] & FD_SWAPPED)) |
670 | return hconsole1; | |
671 | if (fd == 2 && (fd_is_interactive[2] & FD_SWAPPED)) | |
672 | return hconsole2; | |
673 | ||
c5a03b1e JS |
674 | ret = (HANDLE)_get_osfhandle(fd); |
675 | ||
676 | /* | |
677 | * There are obviously circumstances under which _get_osfhandle() | |
678 | * returns (HANDLE)-2. This is not documented anywhere, but that is so | |
679 | * clearly an invalid handle value that we can just work around this | |
680 | * and return the correct value for invalid handles. | |
681 | */ | |
682 | return ret == (HANDLE)-2 ? INVALID_HANDLE_VALUE : ret; | |
c09df8a7 | 683 | } |