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, 276 deletions

diff --git a/third_party/git/refspec.c b/third_party/git/refspec.c
deleted file mode 100644
index 8af357a0a35d..000000000000
--- a/third_party/git/refspec.c
+++ /dev/null
@@ -1,276 +0,0 @@
-#include "cache.h"
-#include "strvec.h"
-#include "refs.h"
-#include "refspec.h"
-
-static struct refspec_item s_tag_refspec = {
-	0,
-	1,
-	0,
-	0,
-	0,
-	"refs/tags/*",
-	"refs/tags/*"
-};
-
-/* See TAG_REFSPEC for the string version */
-const struct refspec_item *tag_refspec = &s_tag_refspec;
-
-/*
- * Parses the provided refspec 'refspec' and populates the refspec_item 'item'.
- * Returns 1 if successful and 0 if the refspec is invalid.
- */
-static int parse_refspec(struct refspec_item *item, const char *refspec, int fetch)
-{
-	size_t llen;
-	int is_glob;
-	const char *lhs, *rhs;
-	int flags;
-
-	is_glob = 0;
-
-	lhs = refspec;
-	if (*lhs == '+') {
-		item->force = 1;
-		lhs++;
-	} else if (*lhs == '^') {
-		item->negative = 1;
-		lhs++;
-	}
-
-	rhs = strrchr(lhs, ':');
-
-	/* negative refspecs only have one side */
-	if (item->negative && rhs)
-		return 0;
-
-	/*
-	 * Before going on, special case ":" (or "+:") as a refspec
-	 * for pushing matching refs.
-	 */
-	if (!fetch && rhs == lhs && rhs[1] == '\0') {
-		item->matching = 1;
-		return 1;
-	}
-
-	if (rhs) {
-		size_t rlen = strlen(++rhs);
-		is_glob = (1 <= rlen && strchr(rhs, '*'));
-		item->dst = xstrndup(rhs, rlen);
-	} else {
-		item->dst = NULL;
-	}
-
-	llen = (rhs ? (rhs - lhs - 1) : strlen(lhs));
-	if (1 <= llen && memchr(lhs, '*', llen)) {
-		if ((rhs && !is_glob) || (!rhs && !item->negative && fetch))
-			return 0;
-		is_glob = 1;
-	} else if (rhs && is_glob) {
-		return 0;
-	}
-
-	item->pattern = is_glob;
-	item->src = xstrndup(lhs, llen);
-	flags = REFNAME_ALLOW_ONELEVEL | (is_glob ? REFNAME_REFSPEC_PATTERN : 0);
-
-	if (item->negative) {
-		struct object_id unused;
-
-		/*
-		 * Negative refspecs only have a LHS, which indicates a ref
-		 * (or pattern of refs) to exclude from other matches. This
-		 * can either be a simple ref, or a glob pattern. Exact sha1
-		 * match is not currently supported.
-		 */
-		if (!*item->src)
-			return 0; /* negative refspecs must not be empty */
-		else if (llen == the_hash_algo->hexsz && !get_oid_hex(item->src, &unused))
-			return 0; /* negative refpsecs cannot be exact sha1 */
-		else if (!check_refname_format(item->src, flags))
-			; /* valid looking ref is ok */
-		else
-			return 0;
-
-		/* the other rules below do not apply to negative refspecs */
-		return 1;
-	}
-
-	if (fetch) {
-		struct object_id unused;
-
-		/* LHS */
-		if (!*item->src)
-			; /* empty is ok; it means "HEAD" */
-		else if (llen == the_hash_algo->hexsz && !get_oid_hex(item->src, &unused))
-			item->exact_sha1 = 1; /* ok */
-		else if (!check_refname_format(item->src, flags))
-			; /* valid looking ref is ok */
-		else
-			return 0;
-		/* RHS */
-		if (!item->dst)
-			; /* missing is ok; it is the same as empty */
-		else if (!*item->dst)
-			; /* empty is ok; it means "do not store" */
-		else if (!check_refname_format(item->dst, flags))
-			; /* valid looking ref is ok */
-		else
-			return 0;
-	} else {
-		/*
-		 * LHS
-		 * - empty is allowed; it means delete.
-		 * - when wildcarded, it must be a valid looking ref.
-		 * - otherwise, it must be an extended SHA-1, but
-		 *   there is no existing way to validate this.
-		 */
-		if (!*item->src)
-			; /* empty is ok */
-		else if (is_glob) {
-			if (check_refname_format(item->src, flags))
-				return 0;
-		}
-		else
-			; /* anything goes, for now */
-		/*
-		 * RHS
-		 * - missing is allowed, but LHS then must be a
-		 *   valid looking ref.
-		 * - empty is not allowed.
-		 * - otherwise it must be a valid looking ref.
-		 */
-		if (!item->dst) {
-			if (check_refname_format(item->src, flags))
-				return 0;
-		} else if (!*item->dst) {
-			return 0;
-		} else {
-			if (check_refname_format(item->dst, flags))
-				return 0;
-		}
-	}
-
-	return 1;
-}
-
-int refspec_item_init(struct refspec_item *item, const char *refspec, int fetch)
-{
-	memset(item, 0, sizeof(*item));
-	return parse_refspec(item, refspec, fetch);
-}
-
-void refspec_item_init_or_die(struct refspec_item *item, const char *refspec,
-			      int fetch)
-{
-	if (!refspec_item_init(item, refspec, fetch))
-		die(_("invalid refspec '%s'"), refspec);
-}
-
-void refspec_item_clear(struct refspec_item *item)
-{
-	FREE_AND_NULL(item->src);
-	FREE_AND_NULL(item->dst);
-	item->force = 0;
-	item->pattern = 0;
-	item->matching = 0;
-	item->exact_sha1 = 0;
-}
-
-void refspec_init(struct refspec *rs, int fetch)
-{
-	memset(rs, 0, sizeof(*rs));
-	rs->fetch = fetch;
-}
-
-static void refspec_append_nodup(struct refspec *rs, char *refspec)
-{
-	struct refspec_item item;
-
-	refspec_item_init_or_die(&item, refspec, rs->fetch);
-
-	ALLOC_GROW(rs->items, rs->nr + 1, rs->alloc);
-	rs->items[rs->nr++] = item;
-
-	ALLOC_GROW(rs->raw, rs->raw_nr + 1, rs->raw_alloc);
-	rs->raw[rs->raw_nr++] = refspec;
-}
-
-void refspec_append(struct refspec *rs, const char *refspec)
-{
-	refspec_append_nodup(rs, xstrdup(refspec));
-}
-
-void refspec_appendf(struct refspec *rs, const char *fmt, ...)
-{
-	va_list ap;
-
-	va_start(ap, fmt);
-	refspec_append_nodup(rs, xstrvfmt(fmt, ap));
-	va_end(ap);
-}
-
-void refspec_appendn(struct refspec *rs, const char **refspecs, int nr)
-{
-	int i;
-	for (i = 0; i < nr; i++)
-		refspec_append(rs, refspecs[i]);
-}
-
-void refspec_clear(struct refspec *rs)
-{
-	int i;
-
-	for (i = 0; i < rs->nr; i++)
-		refspec_item_clear(&rs->items[i]);
-
-	FREE_AND_NULL(rs->items);
-	rs->alloc = 0;
-	rs->nr = 0;
-
-	for (i = 0; i < rs->raw_nr; i++)
-		free((char *)rs->raw[i]);
-	FREE_AND_NULL(rs->raw);
-	rs->raw_alloc = 0;
-	rs->raw_nr = 0;
-
-	rs->fetch = 0;
-}
-
-int valid_fetch_refspec(const char *fetch_refspec_str)
-{
-	struct refspec_item refspec;
-	int ret = refspec_item_init(&refspec, fetch_refspec_str, REFSPEC_FETCH);
-	refspec_item_clear(&refspec);
-	return ret;
-}
-
-void refspec_ref_prefixes(const struct refspec *rs,
-			  struct strvec *ref_prefixes)
-{
-	int i;
-	for (i = 0; i < rs->nr; i++) {
-		const struct refspec_item *item = &rs->items[i];
-		const char *prefix = NULL;
-
-		if (item->exact_sha1 || item->negative)
-			continue;
-		if (rs->fetch == REFSPEC_FETCH)
-			prefix = item->src;
-		else if (item->dst)
-			prefix = item->dst;
-		else if (item->src && !item->exact_sha1)
-			prefix = item->src;
-
-		if (prefix) {
-			if (item->pattern) {
-				const char *glob = strchr(prefix, '*');
-				strvec_pushf(ref_prefixes, "%.*s",
-					     (int)(glob - prefix),
-					     prefix);
-			} else {
-				expand_ref_prefix(ref_prefixes, prefix);
-			}
-		}
-	}
-}