chore(3p/git): Unvendor git and track patches instead r/2903

This was vendored a long time ago under the expectation that keeping
it in sync with cgit would be easier this way, but it has proven not
to be a big issue.

On the other hand, a vendored copy of git is an annoying maintenance
burden. It is much easier to rebase the single (dottime) patch that we
have.

This removes the vendored copy of git and instead passes the git
source code to cgit via `pkgs.srcOnly`, which includes the applied
patch so that cgit can continue rendering dottime.

Change-Id: If31f62dea7ce688fd1b9050204e9378019775f2b

1 files changed, 0 insertions, 681 deletions

diff --git a/third_party/git/compat/winansi.c b/third_party/git/compat/winansi.c
deleted file mode 100644
index c27b20a79d91..000000000000
--- a/third_party/git/compat/winansi.c
+++ /dev/null
@@ -1,681 +0,0 @@
-/*
- * Copyright 2008 Peter Harris <git@peter.is-a-geek.org>
- */
-
-#undef NOGDI
-#include "../git-compat-util.h"
-#include <wingdi.h>
-#include <winreg.h>
-#include "win32.h"
-#include "win32/lazyload.h"
-
-static int fd_is_interactive[3] = { 0, 0, 0 };
-#define FD_CONSOLE 0x1
-#define FD_SWAPPED 0x2
-#define FD_MSYS    0x4
-
-/*
- ANSI codes used by git: m, K
-
- This file is git-specific. Therefore, this file does not attempt
- to implement any codes that are not used by git.
-*/
-
-static HANDLE console;
-static WORD plain_attr;
-static WORD attr;
-static int negative;
-static int non_ascii_used = 0;
-static HANDLE hthread, hread, hwrite;
-static HANDLE hconsole1, hconsole2;
-
-#ifdef __MINGW32__
-#if !defined(__MINGW64_VERSION_MAJOR) || __MINGW64_VERSION_MAJOR < 5
-typedef struct _CONSOLE_FONT_INFOEX {
-	ULONG cbSize;
-	DWORD nFont;
-	COORD dwFontSize;
-	UINT FontFamily;
-	UINT FontWeight;
-	WCHAR FaceName[LF_FACESIZE];
-} CONSOLE_FONT_INFOEX, *PCONSOLE_FONT_INFOEX;
-#endif
-#endif
-
-static void warn_if_raster_font(void)
-{
-	DWORD fontFamily = 0;
-	DECLARE_PROC_ADDR(kernel32.dll, BOOL, GetCurrentConsoleFontEx,
-			HANDLE, BOOL, PCONSOLE_FONT_INFOEX);
-
-	/* don't bother if output was ascii only */
-	if (!non_ascii_used)
-		return;
-
-	/* GetCurrentConsoleFontEx is available since Vista */
-	if (INIT_PROC_ADDR(GetCurrentConsoleFontEx)) {
-		CONSOLE_FONT_INFOEX cfi;
-		cfi.cbSize = sizeof(cfi);
-		if (GetCurrentConsoleFontEx(console, 0, &cfi))
-			fontFamily = cfi.FontFamily;
-	} else {
-		/* pre-Vista: check default console font in registry */
-		HKEY hkey;
-		if (ERROR_SUCCESS == RegOpenKeyExA(HKEY_CURRENT_USER, "Console",
-				0, KEY_READ, &hkey)) {
-			DWORD size = sizeof(fontFamily);
-			RegQueryValueExA(hkey, "FontFamily", NULL, NULL,
-					(LPVOID) &fontFamily, &size);
-			RegCloseKey(hkey);
-		}
-	}
-
-	if (!(fontFamily & TMPF_TRUETYPE)) {
-		const wchar_t *msg = L"\nWarning: Your console font probably "
-			L"doesn\'t support Unicode. If you experience strange "
-			L"characters in the output, consider switching to a "
-			L"TrueType font such as Consolas!\n";
-		DWORD dummy;
-		WriteConsoleW(console, msg, wcslen(msg), &dummy, NULL);
-	}
-}
-
-static int is_console(int fd)
-{
-	CONSOLE_SCREEN_BUFFER_INFO sbi;
-	DWORD mode;
-	HANDLE hcon;
-
-	static int initialized = 0;
-
-	/* get OS handle of the file descriptor */
-	hcon = (HANDLE) _get_osfhandle(fd);
-	if (hcon == INVALID_HANDLE_VALUE)
-		return 0;
-
-	/* check if its a device (i.e. console, printer, serial port) */
-	if (GetFileType(hcon) != FILE_TYPE_CHAR)
-		return 0;
-
-	/* check if its a handle to a console output screen buffer */
-	if (!fd) {
-		if (!GetConsoleMode(hcon, &mode))
-			return 0;
-		/*
-		 * This code path is only reached if there is no console
-		 * attached to stdout/stderr, i.e. we will not need to output
-		 * any text to any console, therefore we might just as well
-		 * use black as foreground color.
-		 */
-		sbi.wAttributes = 0;
-	} else if (!GetConsoleScreenBufferInfo(hcon, &sbi))
-		return 0;
-
-	if (fd >= 0 && fd <= 2)
-		fd_is_interactive[fd] |= FD_CONSOLE;
-
-	/* initialize attributes */
-	if (!initialized) {
-		console = hcon;
-		attr = plain_attr = sbi.wAttributes;
-		negative = 0;
-		initialized = 1;
-	}
-
-	return 1;
-}
-
-#define BUFFER_SIZE 4096
-#define MAX_PARAMS 16
-
-static void write_console(unsigned char *str, size_t len)
-{
-	/* only called from console_thread, so a static buffer will do */
-	static wchar_t wbuf[2 * BUFFER_SIZE + 1];
-	DWORD dummy;
-
-	/* convert utf-8 to utf-16 */
-	int wlen = xutftowcsn(wbuf, (char*) str, ARRAY_SIZE(wbuf), len);
-	if (wlen < 0) {
-		wchar_t *err = L"[invalid]";
-		WriteConsoleW(console, err, wcslen(err), &dummy, NULL);
-		return;
-	}
-
-	/* write directly to console */
-	WriteConsoleW(console, wbuf, wlen, &dummy, NULL);
-
-	/* remember if non-ascii characters are printed */
-	if (wlen != len)
-		non_ascii_used = 1;
-}
-
-#define FOREGROUND_ALL (FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE)
-#define BACKGROUND_ALL (BACKGROUND_RED | BACKGROUND_GREEN | BACKGROUND_BLUE)
-
-static void set_console_attr(void)
-{
-	WORD attributes = attr;
-	if (negative) {
-		attributes &= ~FOREGROUND_ALL;
-		attributes &= ~BACKGROUND_ALL;
-
-		/* This could probably use a bitmask
-		   instead of a series of ifs */
-		if (attr & FOREGROUND_RED)
-			attributes |= BACKGROUND_RED;
-		if (attr & FOREGROUND_GREEN)
-			attributes |= BACKGROUND_GREEN;
-		if (attr & FOREGROUND_BLUE)
-			attributes |= BACKGROUND_BLUE;
-
-		if (attr & BACKGROUND_RED)
-			attributes |= FOREGROUND_RED;
-		if (attr & BACKGROUND_GREEN)
-			attributes |= FOREGROUND_GREEN;
-		if (attr & BACKGROUND_BLUE)
-			attributes |= FOREGROUND_BLUE;
-	}
-	SetConsoleTextAttribute(console, attributes);
-}
-
-static void erase_in_line(void)
-{
-	CONSOLE_SCREEN_BUFFER_INFO sbi;
-	DWORD dummy; /* Needed for Windows 7 (or Vista) regression */
-
-	if (!console)
-		return;
-
-	GetConsoleScreenBufferInfo(console, &sbi);
-	FillConsoleOutputCharacterA(console, ' ',
-		sbi.dwSize.X - sbi.dwCursorPosition.X, sbi.dwCursorPosition,
-		&dummy);
-}
-
-static void set_attr(char func, const int *params, int paramlen)
-{
-	int i;
-	switch (func) {
-	case 'm':
-		for (i = 0; i < paramlen; i++) {
-			switch (params[i]) {
-			case 0: /* reset */
-				attr = plain_attr;
-				negative = 0;
-				break;
-			case 1: /* bold */
-				attr |= FOREGROUND_INTENSITY;
-				break;
-			case 2:  /* faint */
-			case 22: /* normal */
-				attr &= ~FOREGROUND_INTENSITY;
-				break;
-			case 3:  /* italic */
-				/* Unsupported */
-				break;
-			case 4:  /* underline */
-			case 21: /* double underline */
-				/* Wikipedia says this flag does nothing */
-				/* Furthermore, mingw doesn't define this flag
-				attr |= COMMON_LVB_UNDERSCORE; */
-				break;
-			case 24: /* no underline */
-				/* attr &= ~COMMON_LVB_UNDERSCORE; */
-				break;
-			case 5:  /* slow blink */
-			case 6:  /* fast blink */
-				/* We don't have blink, but we do have
-				   background intensity */
-				attr |= BACKGROUND_INTENSITY;
-				break;
-			case 25: /* no blink */
-				attr &= ~BACKGROUND_INTENSITY;
-				break;
-			case 7:  /* negative */
-				negative = 1;
-				break;
-			case 27: /* positive */
-				negative = 0;
-				break;
-			case 8:  /* conceal */
-			case 28: /* reveal */
-				/* Unsupported */
-				break;
-			case 30: /* Black */
-				attr &= ~FOREGROUND_ALL;
-				break;
-			case 31: /* Red */
-				attr &= ~FOREGROUND_ALL;
-				attr |= FOREGROUND_RED;
-				break;
-			case 32: /* Green */
-				attr &= ~FOREGROUND_ALL;
-				attr |= FOREGROUND_GREEN;
-				break;
-			case 33: /* Yellow */
-				attr &= ~FOREGROUND_ALL;
-				attr |= FOREGROUND_RED | FOREGROUND_GREEN;
-				break;
-			case 34: /* Blue */
-				attr &= ~FOREGROUND_ALL;
-				attr |= FOREGROUND_BLUE;
-				break;
-			case 35: /* Magenta */
-				attr &= ~FOREGROUND_ALL;
-				attr |= FOREGROUND_RED | FOREGROUND_BLUE;
-				break;
-			case 36: /* Cyan */
-				attr &= ~FOREGROUND_ALL;
-				attr |= FOREGROUND_GREEN | FOREGROUND_BLUE;
-				break;
-			case 37: /* White */
-				attr |= FOREGROUND_RED |
-					FOREGROUND_GREEN |
-					FOREGROUND_BLUE;
-				break;
-			case 38: /* Unknown */
-				break;
-			case 39: /* reset */
-				attr &= ~FOREGROUND_ALL;
-				attr |= (plain_attr & FOREGROUND_ALL);
-				break;
-			case 40: /* Black */
-				attr &= ~BACKGROUND_ALL;
-				break;
-			case 41: /* Red */
-				attr &= ~BACKGROUND_ALL;
-				attr |= BACKGROUND_RED;
-				break;
-			case 42: /* Green */
-				attr &= ~BACKGROUND_ALL;
-				attr |= BACKGROUND_GREEN;
-				break;
-			case 43: /* Yellow */
-				attr &= ~BACKGROUND_ALL;
-				attr |= BACKGROUND_RED | BACKGROUND_GREEN;
-				break;
-			case 44: /* Blue */
-				attr &= ~BACKGROUND_ALL;
-				attr |= BACKGROUND_BLUE;
-				break;
-			case 45: /* Magenta */
-				attr &= ~BACKGROUND_ALL;
-				attr |= BACKGROUND_RED | BACKGROUND_BLUE;
-				break;
-			case 46: /* Cyan */
-				attr &= ~BACKGROUND_ALL;
-				attr |= BACKGROUND_GREEN | BACKGROUND_BLUE;
-				break;
-			case 47: /* White */
-				attr |= BACKGROUND_RED |
-					BACKGROUND_GREEN |
-					BACKGROUND_BLUE;
-				break;
-			case 48: /* Unknown */
-				break;
-			case 49: /* reset */
-				attr &= ~BACKGROUND_ALL;
-				attr |= (plain_attr & BACKGROUND_ALL);
-				break;
-			default:
-				/* Unsupported code */
-				break;
-			}
-		}
-		set_console_attr();
-		break;
-	case 'K':
-		erase_in_line();
-		break;
-	default:
-		/* Unsupported code */
-		break;
-	}
-}
-
-enum {
-	TEXT = 0, ESCAPE = 033, BRACKET = '['
-};
-
-static DWORD WINAPI console_thread(LPVOID unused)
-{
-	unsigned char buffer[BUFFER_SIZE];
-	DWORD bytes;
-	int start, end = 0, c, parampos = 0, state = TEXT;
-	int params[MAX_PARAMS];
-
-	while (1) {
-		/* read next chunk of bytes from the pipe */
-		if (!ReadFile(hread, buffer + end, BUFFER_SIZE - end, &bytes,
-				NULL)) {
-			/* exit if pipe has been closed or disconnected */
-			if (GetLastError() == ERROR_PIPE_NOT_CONNECTED ||
-					GetLastError() == ERROR_BROKEN_PIPE)
-				break;
-			/* ignore other errors */
-			continue;
-		}
-
-		/* scan the bytes and handle ANSI control codes */
-		bytes += end;
-		start = end = 0;
-		while (end < bytes) {
-			c = buffer[end++];
-			switch (state) {
-			case TEXT:
-				if (c == ESCAPE) {
-					/* print text seen so far */
-					if (end - 1 > start)
-						write_console(buffer + start,
-							end - 1 - start);
-
-					/* then start parsing escape sequence */
-					start = end - 1;
-					memset(params, 0, sizeof(params));
-					parampos = 0;
-					state = ESCAPE;
-				}
-				break;
-
-			case ESCAPE:
-				/* continue if "\033[", otherwise bail out */
-				state = (c == BRACKET) ? BRACKET : TEXT;
-				break;
-
-			case BRACKET:
-				/* parse [0-9;]* into array of parameters */
-				if (c >= '0' && c <= '9') {
-					params[parampos] *= 10;
-					params[parampos] += c - '0';
-				} else if (c == ';') {
-					/*
-					 * next parameter, bail out if out of
-					 * bounds
-					 */
-					parampos++;
-					if (parampos >= MAX_PARAMS)
-						state = TEXT;
-				} else {
-					/*
-					 * end of escape sequence, change
-					 * console attributes
-					 */
-					set_attr(c, params, parampos + 1);
-					start = end;
-					state = TEXT;
-				}
-				break;
-			}
-		}
-
-		/* print remaining text unless parsing an escape sequence */
-		if (state == TEXT && end > start) {
-			/* check for incomplete UTF-8 sequences and fix end */
-			if (buffer[end - 1] >= 0x80) {
-				if (buffer[end -1] >= 0xc0)
-					end--;
-				else if (end - 1 > start &&
-						buffer[end - 2] >= 0xe0)
-					end -= 2;
-				else if (end - 2 > start &&
-						buffer[end - 3] >= 0xf0)
-					end -= 3;
-			}
-
-			/* print remaining complete UTF-8 sequences */
-			if (end > start)
-				write_console(buffer + start, end - start);
-
-			/* move remaining bytes to the front */
-			if (end < bytes)
-				memmove(buffer, buffer + end, bytes - end);
-			end = bytes - end;
-		} else {
-			/* all data has been consumed, mark buffer empty */
-			end = 0;
-		}
-	}
-
-	/* check if the console font supports unicode */
-	warn_if_raster_font();
-
-	CloseHandle(hread);
-	return 0;
-}
-
-static void winansi_exit(void)
-{
-	/* flush all streams */
-	_flushall();
-
-	/* signal console thread to exit */
-	FlushFileBuffers(hwrite);
-	DisconnectNamedPipe(hwrite);
-
-	/* wait for console thread to copy remaining data */
-	WaitForSingleObject(hthread, INFINITE);
-
-	/* cleanup handles... */
-	CloseHandle(hwrite);
-	CloseHandle(hthread);
-}
-
-static void die_lasterr(const char *fmt, ...)
-{
-	va_list params;
-	va_start(params, fmt);
-	errno = err_win_to_posix(GetLastError());
-	die_errno(fmt, params);
-	va_end(params);
-}
-
-#undef dup2
-int winansi_dup2(int oldfd, int newfd)
-{
-	int ret = dup2(oldfd, newfd);
-
-	if (!ret && newfd >= 0 && newfd <= 2)
-		fd_is_interactive[newfd] = oldfd < 0 || oldfd > 2 ?
-			0 : fd_is_interactive[oldfd];
-
-	return ret;
-}
-
-static HANDLE duplicate_handle(HANDLE hnd)
-{
-	HANDLE hresult, hproc = GetCurrentProcess();
-	if (!DuplicateHandle(hproc, hnd, hproc, &hresult, 0, TRUE,
-			DUPLICATE_SAME_ACCESS))
-		die_lasterr("DuplicateHandle(%li) failed",
-			(long) (intptr_t) hnd);
-	return hresult;
-}
-
-static HANDLE swap_osfhnd(int fd, HANDLE new_handle)
-{
-	/*
-	 * Create a copy of the original handle associated with fd
-	 * because the original will get closed when we dup2().
-	 */
-	HANDLE handle = (HANDLE)_get_osfhandle(fd);
-	HANDLE duplicate = duplicate_handle(handle);
-
-	/* Create a temp fd associated with the already open "new_handle". */
-	int new_fd = _open_osfhandle((intptr_t)new_handle, O_BINARY);
-
-	assert((fd == 1) || (fd == 2));
-
-	/*
-	 * Use stock dup2() to re-bind fd to the new handle.  Note that
-	 * this will implicitly close(1) and close both fd=1 and the
-	 * originally associated handle.  It will open a new fd=1 and
-	 * call DuplicateHandle() on the handle associated with new_fd.
-	 * It is because of this implicit close() that we created the
-	 * copy of the original.
-	 *
-	 * Note that we need to update the cached console handle to the
-	 * duplicated one because the dup2() call will implicitly close
-	 * the original one.
-	 *
-	 * Note that dup2() when given target := {0,1,2} will also
-	 * call SetStdHandle(), so we don't need to worry about that.
-	 */
-	if (console == handle)
-		console = duplicate;
-	dup2(new_fd, fd);
-
-	/* Close the temp fd.  This explicitly closes "new_handle"
-	 * (because it has been associated with it).
-	 */
-	close(new_fd);
-
-	if (fd == 2)
-		setvbuf(stderr, NULL, _IONBF, BUFSIZ);
-	fd_is_interactive[fd] |= FD_SWAPPED;
-
-	return duplicate;
-}
-
-#ifdef DETECT_MSYS_TTY
-
-#include <winternl.h>
-
-#if defined(_MSC_VER)
-
-typedef struct _OBJECT_NAME_INFORMATION
-{
-	UNICODE_STRING Name;
-	WCHAR NameBuffer[FLEX_ARRAY];
-} OBJECT_NAME_INFORMATION, *POBJECT_NAME_INFORMATION;
-
-#define ObjectNameInformation 1
-
-#else
-#include <ntstatus.h>
-#endif
-
-static void detect_msys_tty(int fd)
-{
-	ULONG result;
-	BYTE buffer[1024];
-	POBJECT_NAME_INFORMATION nameinfo = (POBJECT_NAME_INFORMATION) buffer;
-	PWSTR name;
-
-	/* check if fd is a pipe */
-	HANDLE h = (HANDLE) _get_osfhandle(fd);
-	if (GetFileType(h) != FILE_TYPE_PIPE)
-		return;
-
-	/* get pipe name */
-	if (!NT_SUCCESS(NtQueryObject(h, ObjectNameInformation,
-			buffer, sizeof(buffer) - 2, &result)))
-		return;
-	name = nameinfo->Name.Buffer;
-	name[nameinfo->Name.Length / sizeof(*name)] = 0;
-
-	/*
-	 * Check if this could be a MSYS2 pty pipe ('msys-XXXX-ptyN-XX')
-	 * or a cygwin pty pipe ('cygwin-XXXX-ptyN-XX')
-	 */
-	if ((!wcsstr(name, L"msys-") && !wcsstr(name, L"cygwin-")) ||
-			!wcsstr(name, L"-pty"))
-		return;
-
-	if (fd == 2)
-		setvbuf(stderr, NULL, _IONBF, BUFSIZ);
-	fd_is_interactive[fd] |= FD_MSYS;
-}
-
-#endif
-
-/*
- * Wrapper for isatty().  Most calls in the main git code
- * call isatty(1 or 2) to see if the instance is interactive
- * and should: be colored, show progress, paginate output.
- * We lie and give results for what the descriptor WAS at
- * startup (and ignore any pipe redirection we internally
- * do).
- */
-#undef isatty
-int winansi_isatty(int fd)
-{
-	if (fd >= 0 && fd <= 2)
-		return fd_is_interactive[fd] != 0;
-	return isatty(fd);
-}
-
-void winansi_init(void)
-{
-	int con1, con2;
-	wchar_t name[32];
-
-	/* check if either stdout or stderr is a console output screen buffer */
-	con1 = is_console(1);
-	con2 = is_console(2);
-
-	/* Also compute console bit for fd 0 even though we don't need the result here. */
-	is_console(0);
-
-	if (!con1 && !con2) {
-#ifdef DETECT_MSYS_TTY
-		/* check if stdin / stdout / stderr are MSYS2 pty pipes */
-		detect_msys_tty(0);
-		detect_msys_tty(1);
-		detect_msys_tty(2);
-#endif
-		return;
-	}
-
-	/* create a named pipe to communicate with the console thread */
-	if (swprintf(name, ARRAY_SIZE(name) - 1, L"\\\\.\\pipe\\winansi%lu",
-		     GetCurrentProcessId()) < 0)
-		die("Could not initialize winansi pipe name");
-	hwrite = CreateNamedPipeW(name, PIPE_ACCESS_OUTBOUND,
-		PIPE_TYPE_BYTE | PIPE_WAIT, 1, BUFFER_SIZE, 0, 0, NULL);
-	if (hwrite == INVALID_HANDLE_VALUE)
-		die_lasterr("CreateNamedPipe failed");
-
-	hread = CreateFileW(name, GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, NULL);
-	if (hread == INVALID_HANDLE_VALUE)
-		die_lasterr("CreateFile for named pipe failed");
-
-	/* start console spool thread on the pipe's read end */
-	hthread = CreateThread(NULL, 0, console_thread, NULL, 0, NULL);
-	if (hthread == INVALID_HANDLE_VALUE)
-		die_lasterr("CreateThread(console_thread) failed");
-
-	/* schedule cleanup routine */
-	if (atexit(winansi_exit))
-		die_errno("atexit(winansi_exit) failed");
-
-	/* redirect stdout / stderr to the pipe */
-	if (con1)
-		hconsole1 = swap_osfhnd(1, duplicate_handle(hwrite));
-	if (con2)
-		hconsole2 = swap_osfhnd(2, duplicate_handle(hwrite));
-}
-
-/*
- * Returns the real console handle if stdout / stderr is a pipe redirecting
- * to the console. Allows spawn / exec to pass the console to the next process.
- */
-HANDLE winansi_get_osfhandle(int fd)
-{
-	HANDLE ret;
-
-	if (fd == 1 && (fd_is_interactive[1] & FD_SWAPPED))
-		return hconsole1;
-	if (fd == 2 && (fd_is_interactive[2] & FD_SWAPPED))
-		return hconsole2;
-
-	ret = (HANDLE)_get_osfhandle(fd);
-
-	/*
-	 * There are obviously circumstances under which _get_osfhandle()
-	 * returns (HANDLE)-2. This is not documented anywhere, but that is so
-	 * clearly an invalid handle value that we can just work around this
-	 * and return the correct value for invalid handles.
-	 */
-	return ret == (HANDLE)-2 ? INVALID_HANDLE_VALUE : ret;
-}