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, 295 deletions

diff --git a/third_party/git/line-range.c b/third_party/git/line-range.c
deleted file mode 100644
index 9b50583dc051..000000000000
--- a/third_party/git/line-range.c
+++ /dev/null
@@ -1,295 +0,0 @@
-#include "git-compat-util.h"
-#include "line-range.h"
-#include "xdiff-interface.h"
-#include "strbuf.h"
-#include "userdiff.h"
-
-/*
- * Parse one item in the -L option
- *
- * 'begin' is applicable only to relative range anchors. Absolute anchors
- * ignore this value.
- *
- * When parsing "-L A,B", parse_loc() is called once for A and once for B.
- *
- * When parsing A, 'begin' must be a negative number, the absolute value of
- * which is the line at which relative start-of-range anchors should be
- * based. Beginning of file is represented by -1.
- *
- * When parsing B, 'begin' must be the positive line number immediately
- * following the line computed for 'A'.
- */
-static const char *parse_loc(const char *spec, nth_line_fn_t nth_line,
-			     void *data, long lines, long begin, long *ret)
-{
-	char *term;
-	const char *line;
-	long num;
-	int reg_error;
-	regex_t regexp;
-	regmatch_t match[1];
-
-	/* Allow "-L <something>,+20" to mean starting at <something>
-	 * for 20 lines, or "-L <something>,-5" for 5 lines ending at
-	 * <something>.
-	 */
-	if (1 <= begin && (spec[0] == '+' || spec[0] == '-')) {
-		num = strtol(spec + 1, &term, 10);
-		if (term != spec + 1) {
-			if (!ret)
-				return term;
-			if (num == 0)
-				die("-L invalid empty range");
-			if (spec[0] == '-')
-				num = 0 - num;
-			if (0 < num)
-				*ret = begin + num - 2;
-			else if (!num)
-				*ret = begin;
-			else
-				*ret = begin + num > 0 ? begin + num : 1;
-			return term;
-		}
-		return spec;
-	}
-	num = strtol(spec, &term, 10);
-	if (term != spec) {
-		if (ret) {
-			if (num <= 0)
-				die("-L invalid line number: %ld", num);
-			*ret = num;
-		}
-		return term;
-	}
-
-	if (begin < 0) {
-		if (spec[0] != '^')
-			begin = -begin;
-		else {
-			begin = 1;
-			spec++;
-		}
-	}
-
-	if (spec[0] != '/')
-		return spec;
-
-	/* it could be a regexp of form /.../ */
-	for (term = (char *) spec + 1; *term && *term != '/'; term++) {
-		if (*term == '\\')
-			term++;
-	}
-	if (*term != '/')
-		return spec;
-
-	/* in the scan-only case we are not interested in the regex */
-	if (!ret)
-		return term+1;
-
-	/* try [spec+1 .. term-1] as regexp */
-	*term = 0;
-	begin--; /* input is in human terms */
-	line = nth_line(data, begin);
-
-	if (!(reg_error = regcomp(&regexp, spec + 1, REG_NEWLINE)) &&
-	    !(reg_error = regexec(&regexp, line, 1, match, 0))) {
-		const char *cp = line + match[0].rm_so;
-		const char *nline;
-
-		while (begin++ < lines) {
-			nline = nth_line(data, begin);
-			if (line <= cp && cp < nline)
-				break;
-			line = nline;
-		}
-		*ret = begin;
-		regfree(&regexp);
-		*term++ = '/';
-		return term;
-	}
-	else {
-		char errbuf[1024];
-		regerror(reg_error, &regexp, errbuf, 1024);
-		die("-L parameter '%s' starting at line %ld: %s",
-		    spec + 1, begin + 1, errbuf);
-	}
-}
-
-static int match_funcname(xdemitconf_t *xecfg, const char *bol, const char *eol)
-{
-	if (xecfg) {
-		char buf[1];
-		return xecfg->find_func(bol, eol - bol, buf, 1,
-					xecfg->find_func_priv) >= 0;
-	}
-
-	if (bol == eol)
-		return 0;
-	if (isalpha(*bol) || *bol == '_' || *bol == '$')
-		return 1;
-	return 0;
-}
-
-static const char *find_funcname_matching_regexp(xdemitconf_t *xecfg, const char *start,
-						 regex_t *regexp)
-{
-	int reg_error;
-	regmatch_t match[1];
-	while (1) {
-		const char *bol, *eol;
-		reg_error = regexec(regexp, start, 1, match, 0);
-		if (reg_error == REG_NOMATCH)
-			return NULL;
-		else if (reg_error) {
-			char errbuf[1024];
-			regerror(reg_error, regexp, errbuf, 1024);
-			die("-L parameter: regexec() failed: %s", errbuf);
-		}
-		/* determine extent of line matched */
-		bol = start+match[0].rm_so;
-		eol = start+match[0].rm_eo;
-		while (bol > start && *bol != '\n')
-			bol--;
-		if (*bol == '\n')
-			bol++;
-		while (*eol && *eol != '\n')
-			eol++;
-		if (*eol == '\n')
-			eol++;
-		/* is it a funcname line? */
-		if (match_funcname(xecfg, (char*) bol, (char*) eol))
-			return bol;
-		start = eol;
-	}
-}
-
-static const char *parse_range_funcname(
-	const char *arg, nth_line_fn_t nth_line_cb,
-	void *cb_data, long lines, long anchor, long *begin, long *end,
-	const char *path, struct index_state *istate)
-{
-	char *pattern;
-	const char *term;
-	struct userdiff_driver *drv;
-	xdemitconf_t *xecfg = NULL;
-	const char *start;
-	const char *p;
-	int reg_error;
-	regex_t regexp;
-
-	if (*arg == '^') {
-		anchor = 1;
-		arg++;
-	}
-
-	assert(*arg == ':');
-	term = arg+1;
-	while (*term && *term != ':') {
-		if (*term == '\\' && *(term+1))
-			term++;
-		term++;
-	}
-	if (term == arg+1)
-		return NULL;
-	if (!begin) /* skip_range_arg case */
-		return term;
-
-	pattern = xstrndup(arg+1, term-(arg+1));
-
-	anchor--; /* input is in human terms */
-	start = nth_line_cb(cb_data, anchor);
-
-	drv = userdiff_find_by_path(istate, path);
-	if (drv && drv->funcname.pattern) {
-		const struct userdiff_funcname *pe = &drv->funcname;
-		xecfg = xcalloc(1, sizeof(*xecfg));
-		xdiff_set_find_func(xecfg, pe->pattern, pe->cflags);
-	}
-
-	reg_error = regcomp(&regexp, pattern, REG_NEWLINE);
-	if (reg_error) {
-		char errbuf[1024];
-		regerror(reg_error, &regexp, errbuf, 1024);
-		die("-L parameter '%s': %s", pattern, errbuf);
-	}
-
-	p = find_funcname_matching_regexp(xecfg, (char*) start, &regexp);
-	if (!p)
-		die("-L parameter '%s' starting at line %ld: no match",
-		    pattern, anchor + 1);
-	*begin = 0;
-	while (p > nth_line_cb(cb_data, *begin))
-		(*begin)++;
-
-	if (*begin >= lines)
-		die("-L parameter '%s' matches at EOF", pattern);
-
-	*end = *begin+1;
-	while (*end < lines) {
-		const char *bol = nth_line_cb(cb_data, *end);
-		const char *eol = nth_line_cb(cb_data, *end+1);
-		if (match_funcname(xecfg, bol, eol))
-			break;
-		(*end)++;
-	}
-
-	regfree(&regexp);
-	free(xecfg);
-	free(pattern);
-
-	/* compensate for 1-based numbering */
-	(*begin)++;
-
-	return term;
-}
-
-int parse_range_arg(const char *arg, nth_line_fn_t nth_line_cb,
-		    void *cb_data, long lines, long anchor,
-		    long *begin, long *end,
-		    const char *path, struct index_state *istate)
-{
-	*begin = *end = 0;
-
-	if (anchor < 1)
-		anchor = 1;
-	if (anchor > lines)
-		anchor = lines + 1;
-
-	if (*arg == ':' || (*arg == '^' && *(arg + 1) == ':')) {
-		arg = parse_range_funcname(arg, nth_line_cb, cb_data,
-					   lines, anchor, begin, end,
-					   path, istate);
-		if (!arg || *arg)
-			return -1;
-		return 0;
-	}
-
-	arg = parse_loc(arg, nth_line_cb, cb_data, lines, -anchor, begin);
-
-	if (*arg == ',')
-		arg = parse_loc(arg + 1, nth_line_cb, cb_data, lines, *begin + 1, end);
-
-	if (*arg)
-		return -1;
-
-	if (*begin && *end && *end < *begin) {
-		SWAP(*end, *begin);
-	}
-
-	return 0;
-}
-
-const char *skip_range_arg(const char *arg, struct index_state *istate)
-{
-	if (*arg == ':' || (*arg == '^' && *(arg + 1) == ':'))
-		return parse_range_funcname(arg, NULL, NULL,
-					    0, 0, NULL, NULL,
-					    NULL, istate);
-
-	arg = parse_loc(arg, NULL, NULL, 0, -1, NULL);
-
-	if (*arg == ',')
-		arg = parse_loc(arg+1, NULL, NULL, 0, 0, NULL);
-
-	return arg;
-}