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, 458 deletions

diff --git a/third_party/git/color.c b/third_party/git/color.c
deleted file mode 100644
index 64f52a4f93a2..000000000000
--- a/third_party/git/color.c
+++ /dev/null
@@ -1,458 +0,0 @@
-#include "cache.h"
-#include "config.h"
-#include "color.h"
-
-static int git_use_color_default = GIT_COLOR_AUTO;
-int color_stdout_is_tty = -1;
-
-/*
- * The list of available column colors.
- */
-const char *column_colors_ansi[] = {
-	GIT_COLOR_RED,
-	GIT_COLOR_GREEN,
-	GIT_COLOR_YELLOW,
-	GIT_COLOR_BLUE,
-	GIT_COLOR_MAGENTA,
-	GIT_COLOR_CYAN,
-	GIT_COLOR_BOLD_RED,
-	GIT_COLOR_BOLD_GREEN,
-	GIT_COLOR_BOLD_YELLOW,
-	GIT_COLOR_BOLD_BLUE,
-	GIT_COLOR_BOLD_MAGENTA,
-	GIT_COLOR_BOLD_CYAN,
-	GIT_COLOR_RESET,
-};
-
-enum {
-	COLOR_BACKGROUND_OFFSET = 10,
-	COLOR_FOREGROUND_ANSI = 30,
-	COLOR_FOREGROUND_RGB = 38,
-	COLOR_FOREGROUND_256 = 38,
-	COLOR_FOREGROUND_BRIGHT_ANSI = 90,
-};
-
-/* Ignore the RESET at the end when giving the size */
-const int column_colors_ansi_max = ARRAY_SIZE(column_colors_ansi) - 1;
-
-/* An individual foreground or background color. */
-struct color {
-	enum {
-		COLOR_UNSPECIFIED = 0,
-		COLOR_NORMAL,
-		COLOR_ANSI, /* basic 0-7 ANSI colors */
-		COLOR_256,
-		COLOR_RGB
-	} type;
-	/* The numeric value for ANSI and 256-color modes */
-	unsigned char value;
-	/* 24-bit RGB color values */
-	unsigned char red, green, blue;
-};
-
-/*
- * "word" is a buffer of length "len"; does it match the NUL-terminated
- * "match" exactly?
- */
-static int match_word(const char *word, int len, const char *match)
-{
-	return !strncasecmp(word, match, len) && !match[len];
-}
-
-static int get_hex_color(const char *in, unsigned char *out)
-{
-	unsigned int val;
-	val = (hexval(in[0]) << 4) | hexval(in[1]);
-	if (val & ~0xff)
-		return -1;
-	*out = val;
-	return 0;
-}
-
-/*
- * If an ANSI color is recognized in "name", fill "out" and return 0.
- * Otherwise, leave out unchanged and return -1.
- */
-static int parse_ansi_color(struct color *out, const char *name, int len)
-{
-	/* Positions in array must match ANSI color codes */
-	static const char * const color_names[] = {
-		"black", "red", "green", "yellow",
-		"blue", "magenta", "cyan", "white"
-	};
-	int i;
-	int color_offset = COLOR_FOREGROUND_ANSI;
-
-	if (strncasecmp(name, "bright", 6) == 0) {
-		color_offset = COLOR_FOREGROUND_BRIGHT_ANSI;
-		name += 6;
-		len -= 6;
-	}
-	for (i = 0; i < ARRAY_SIZE(color_names); i++) {
-		if (match_word(name, len, color_names[i])) {
-			out->type = COLOR_ANSI;
-			out->value = i + color_offset;
-			return 0;
-		}
-	}
-	return -1;
-}
-
-static int parse_color(struct color *out, const char *name, int len)
-{
-	char *end;
-	long val;
-
-	/* First try the special word "normal"... */
-	if (match_word(name, len, "normal")) {
-		out->type = COLOR_NORMAL;
-		return 0;
-	}
-
-	/* Try a 24-bit RGB value */
-	if (len == 7 && name[0] == '#') {
-		if (!get_hex_color(name + 1, &out->red) &&
-		    !get_hex_color(name + 3, &out->green) &&
-		    !get_hex_color(name + 5, &out->blue)) {
-			out->type = COLOR_RGB;
-			return 0;
-		}
-	}
-
-	/* Then pick from our human-readable color names... */
-	if (parse_ansi_color(out, name, len) == 0) {
-		return 0;
-	}
-
-	/* And finally try a literal 256-color-mode number */
-	val = strtol(name, &end, 10);
-	if (end - name == len) {
-		/*
-		 * Allow "-1" as an alias for "normal", but other negative
-		 * numbers are bogus.
-		 */
-		if (val < -1)
-			; /* fall through to error */
-		else if (val < 0) {
-			out->type = COLOR_NORMAL;
-			return 0;
-		/* Rewrite 0-7 as more-portable standard colors. */
-		} else if (val < 8) {
-			out->type = COLOR_ANSI;
-			out->value = val + COLOR_FOREGROUND_ANSI;
-			return 0;
-		/* Rewrite 8-15 as more-portable aixterm colors. */
-		} else if (val < 16) {
-			out->type = COLOR_ANSI;
-			out->value = val - 8 + COLOR_FOREGROUND_BRIGHT_ANSI;
-			return 0;
-		} else if (val < 256) {
-			out->type = COLOR_256;
-			out->value = val;
-			return 0;
-		}
-	}
-
-	return -1;
-}
-
-static int parse_attr(const char *name, size_t len)
-{
-	static const struct {
-		const char *name;
-		size_t len;
-		int val, neg;
-	} attrs[] = {
-#define ATTR(x, val, neg) { (x), sizeof(x)-1, (val), (neg) }
-		ATTR("bold",      1, 22),
-		ATTR("dim",       2, 22),
-		ATTR("italic",    3, 23),
-		ATTR("ul",        4, 24),
-		ATTR("blink",     5, 25),
-		ATTR("reverse",   7, 27),
-		ATTR("strike",    9, 29)
-#undef ATTR
-	};
-	int negate = 0;
-	int i;
-
-	if (skip_prefix_mem(name, len, "no", &name, &len)) {
-		skip_prefix_mem(name, len, "-", &name, &len);
-		negate = 1;
-	}
-
-	for (i = 0; i < ARRAY_SIZE(attrs); i++) {
-		if (attrs[i].len == len && !memcmp(attrs[i].name, name, len))
-			return negate ? attrs[i].neg : attrs[i].val;
-	}
-	return -1;
-}
-
-int color_parse(const char *value, char *dst)
-{
-	return color_parse_mem(value, strlen(value), dst);
-}
-
-/*
- * Write the ANSI color codes for "c" to "out"; the string should
- * already have the ANSI escape code in it. "out" should have enough
- * space in it to fit any color.
- */
-static char *color_output(char *out, int len, const struct color *c, int background)
-{
-	int offset = 0;
-
-	if (background)
-		offset = COLOR_BACKGROUND_OFFSET;
-	switch (c->type) {
-	case COLOR_UNSPECIFIED:
-	case COLOR_NORMAL:
-		break;
-	case COLOR_ANSI:
-		out += xsnprintf(out, len, "%d", c->value + offset);
-		break;
-	case COLOR_256:
-		out += xsnprintf(out, len, "%d;5;%d", COLOR_FOREGROUND_256 + offset,
-				 c->value);
-		break;
-	case COLOR_RGB:
-		out += xsnprintf(out, len, "%d;2;%d;%d;%d",
-				 COLOR_FOREGROUND_RGB + offset,
-				 c->red, c->green, c->blue);
-		break;
-	}
-	return out;
-}
-
-static int color_empty(const struct color *c)
-{
-	return c->type <= COLOR_NORMAL;
-}
-
-int color_parse_mem(const char *value, int value_len, char *dst)
-{
-	const char *ptr = value;
-	int len = value_len;
-	char *end = dst + COLOR_MAXLEN;
-	unsigned int attr = 0;
-	struct color fg = { COLOR_UNSPECIFIED };
-	struct color bg = { COLOR_UNSPECIFIED };
-
-	while (len > 0 && isspace(*ptr)) {
-		ptr++;
-		len--;
-	}
-
-	if (!len) {
-		dst[0] = '\0';
-		return 0;
-	}
-
-	if (!strncasecmp(ptr, "reset", len)) {
-		xsnprintf(dst, end - dst, GIT_COLOR_RESET);
-		return 0;
-	}
-
-	/* [fg [bg]] [attr]... */
-	while (len > 0) {
-		const char *word = ptr;
-		struct color c = { COLOR_UNSPECIFIED };
-		int val, wordlen = 0;
-
-		while (len > 0 && !isspace(word[wordlen])) {
-			wordlen++;
-			len--;
-		}
-
-		ptr = word + wordlen;
-		while (len > 0 && isspace(*ptr)) {
-			ptr++;
-			len--;
-		}
-
-		if (!parse_color(&c, word, wordlen)) {
-			if (fg.type == COLOR_UNSPECIFIED) {
-				fg = c;
-				continue;
-			}
-			if (bg.type == COLOR_UNSPECIFIED) {
-				bg = c;
-				continue;
-			}
-			goto bad;
-		}
-		val = parse_attr(word, wordlen);
-		if (0 <= val)
-			attr |= (1 << val);
-		else
-			goto bad;
-	}
-
-#undef OUT
-#define OUT(x) do { \
-	if (dst == end) \
-		BUG("color parsing ran out of space"); \
-	*dst++ = (x); \
-} while(0)
-
-	if (attr || !color_empty(&fg) || !color_empty(&bg)) {
-		int sep = 0;
-		int i;
-
-		OUT('\033');
-		OUT('[');
-
-		for (i = 0; attr; i++) {
-			unsigned bit = (1 << i);
-			if (!(attr & bit))
-				continue;
-			attr &= ~bit;
-			if (sep++)
-				OUT(';');
-			dst += xsnprintf(dst, end - dst, "%d", i);
-		}
-		if (!color_empty(&fg)) {
-			if (sep++)
-				OUT(';');
-			dst = color_output(dst, end - dst, &fg, 0);
-		}
-		if (!color_empty(&bg)) {
-			if (sep++)
-				OUT(';');
-			dst = color_output(dst, end - dst, &bg, 1);
-		}
-		OUT('m');
-	}
-	OUT(0);
-	return 0;
-bad:
-	return error(_("invalid color value: %.*s"), value_len, value);
-#undef OUT
-}
-
-int git_config_colorbool(const char *var, const char *value)
-{
-	if (value) {
-		if (!strcasecmp(value, "never"))
-			return 0;
-		if (!strcasecmp(value, "always"))
-			return 1;
-		if (!strcasecmp(value, "auto"))
-			return GIT_COLOR_AUTO;
-	}
-
-	if (!var)
-		return -1;
-
-	/* Missing or explicit false to turn off colorization */
-	if (!git_config_bool(var, value))
-		return 0;
-
-	/* any normal truth value defaults to 'auto' */
-	return GIT_COLOR_AUTO;
-}
-
-static int check_auto_color(int fd)
-{
-	static int color_stderr_is_tty = -1;
-	int *is_tty_p = fd == 1 ? &color_stdout_is_tty : &color_stderr_is_tty;
-	if (*is_tty_p < 0)
-		*is_tty_p = isatty(fd);
-	if (*is_tty_p || (fd == 1 && pager_in_use() && pager_use_color)) {
-		if (!is_terminal_dumb())
-			return 1;
-	}
-	return 0;
-}
-
-int want_color_fd(int fd, int var)
-{
-	/*
-	 * NEEDSWORK: This function is sometimes used from multiple threads, and
-	 * we end up using want_auto racily. That "should not matter" since
-	 * we always write the same value, but it's still wrong. This function
-	 * is listed in .tsan-suppressions for the time being.
-	 */
-
-	static int want_auto[3] = { -1, -1, -1 };
-
-	if (fd < 1 || fd >= ARRAY_SIZE(want_auto))
-		BUG("file descriptor out of range: %d", fd);
-
-	if (var < 0)
-		var = git_use_color_default;
-
-	if (var == GIT_COLOR_AUTO) {
-		if (want_auto[fd] < 0)
-			want_auto[fd] = check_auto_color(fd);
-		return want_auto[fd];
-	}
-	return var;
-}
-
-int git_color_config(const char *var, const char *value, void *cb)
-{
-	if (!strcmp(var, "color.ui")) {
-		git_use_color_default = git_config_colorbool(var, value);
-		return 0;
-	}
-
-	return 0;
-}
-
-int git_color_default_config(const char *var, const char *value, void *cb)
-{
-	if (git_color_config(var, value, cb) < 0)
-		return -1;
-
-	return git_default_config(var, value, cb);
-}
-
-void color_print_strbuf(FILE *fp, const char *color, const struct strbuf *sb)
-{
-	if (*color)
-		fprintf(fp, "%s", color);
-	fprintf(fp, "%s", sb->buf);
-	if (*color)
-		fprintf(fp, "%s", GIT_COLOR_RESET);
-}
-
-static int color_vfprintf(FILE *fp, const char *color, const char *fmt,
-		va_list args, const char *trail)
-{
-	int r = 0;
-
-	if (*color)
-		r += fprintf(fp, "%s", color);
-	r += vfprintf(fp, fmt, args);
-	if (*color)
-		r += fprintf(fp, "%s", GIT_COLOR_RESET);
-	if (trail)
-		r += fprintf(fp, "%s", trail);
-	return r;
-}
-
-int color_fprintf(FILE *fp, const char *color, const char *fmt, ...)
-{
-	va_list args;
-	int r;
-	va_start(args, fmt);
-	r = color_vfprintf(fp, color, fmt, args, NULL);
-	va_end(args);
-	return r;
-}
-
-int color_fprintf_ln(FILE *fp, const char *color, const char *fmt, ...)
-{
-	va_list args;
-	int r;
-	va_start(args, fmt);
-	r = color_vfprintf(fp, color, fmt, args, "\n");
-	va_end(args);
-	return r;
-}
-
-int color_is_nil(const char *c)
-{
-	return !strcmp(c, "NIL");
-}