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, 180 deletions

diff --git a/third_party/git/builtin/patch-id.c b/third_party/git/builtin/patch-id.c
deleted file mode 100644
index 822ffff51f..0000000000
--- a/third_party/git/builtin/patch-id.c
+++ /dev/null
@@ -1,180 +0,0 @@
-#include "cache.h"
-#include "builtin.h"
-#include "config.h"
-#include "diff.h"
-
-static void flush_current_id(int patchlen, struct object_id *id, struct object_id *result)
-{
-	if (patchlen)
-		printf("%s %s\n", oid_to_hex(result), oid_to_hex(id));
-}
-
-static int remove_space(char *line)
-{
-	char *src = line;
-	char *dst = line;
-	unsigned char c;
-
-	while ((c = *src++) != '\0') {
-		if (!isspace(c))
-			*dst++ = c;
-	}
-	return dst - line;
-}
-
-static int scan_hunk_header(const char *p, int *p_before, int *p_after)
-{
-	static const char digits[] = "0123456789";
-	const char *q, *r;
-	int n;
-
-	q = p + 4;
-	n = strspn(q, digits);
-	if (q[n] == ',') {
-		q += n + 1;
-		n = strspn(q, digits);
-	}
-	if (n == 0 || q[n] != ' ' || q[n+1] != '+')
-		return 0;
-
-	r = q + n + 2;
-	n = strspn(r, digits);
-	if (r[n] == ',') {
-		r += n + 1;
-		n = strspn(r, digits);
-	}
-	if (n == 0)
-		return 0;
-
-	*p_before = atoi(q);
-	*p_after = atoi(r);
-	return 1;
-}
-
-static int get_one_patchid(struct object_id *next_oid, struct object_id *result,
-			   struct strbuf *line_buf, int stable)
-{
-	int patchlen = 0, found_next = 0;
-	int before = -1, after = -1;
-	git_hash_ctx ctx;
-
-	the_hash_algo->init_fn(&ctx);
-	oidclr(result);
-
-	while (strbuf_getwholeline(line_buf, stdin, '\n') != EOF) {
-		char *line = line_buf->buf;
-		const char *p = line;
-		int len;
-
-		if (!skip_prefix(line, "diff-tree ", &p) &&
-		    !skip_prefix(line, "commit ", &p) &&
-		    !skip_prefix(line, "From ", &p) &&
-		    starts_with(line, "\\ ") && 12 < strlen(line))
-			continue;
-
-		if (!get_oid_hex(p, next_oid)) {
-			found_next = 1;
-			break;
-		}
-
-		/* Ignore commit comments */
-		if (!patchlen && !starts_with(line, "diff "))
-			continue;
-
-		/* Parsing diff header?  */
-		if (before == -1) {
-			if (starts_with(line, "index "))
-				continue;
-			else if (starts_with(line, "--- "))
-				before = after = 1;
-			else if (!isalpha(line[0]))
-				break;
-		}
-
-		/* Looking for a valid hunk header?  */
-		if (before == 0 && after == 0) {
-			if (starts_with(line, "@@ -")) {
-				/* Parse next hunk, but ignore line numbers.  */
-				scan_hunk_header(line, &before, &after);
-				continue;
-			}
-
-			/* Split at the end of the patch.  */
-			if (!starts_with(line, "diff "))
-				break;
-
-			/* Else we're parsing another header.  */
-			if (stable)
-				flush_one_hunk(result, &ctx);
-			before = after = -1;
-		}
-
-		/* If we get here, we're inside a hunk.  */
-		if (line[0] == '-' || line[0] == ' ')
-			before--;
-		if (line[0] == '+' || line[0] == ' ')
-			after--;
-
-		/* Compute the sha without whitespace */
-		len = remove_space(line);
-		patchlen += len;
-		the_hash_algo->update_fn(&ctx, line, len);
-	}
-
-	if (!found_next)
-		oidclr(next_oid);
-
-	flush_one_hunk(result, &ctx);
-
-	return patchlen;
-}
-
-static void generate_id_list(int stable)
-{
-	struct object_id oid, n, result;
-	int patchlen;
-	struct strbuf line_buf = STRBUF_INIT;
-
-	oidclr(&oid);
-	while (!feof(stdin)) {
-		patchlen = get_one_patchid(&n, &result, &line_buf, stable);
-		flush_current_id(patchlen, &oid, &result);
-		oidcpy(&oid, &n);
-	}
-	strbuf_release(&line_buf);
-}
-
-static const char patch_id_usage[] = "git patch-id [--stable | --unstable]";
-
-static int git_patch_id_config(const char *var, const char *value, void *cb)
-{
-	int *stable = cb;
-
-	if (!strcmp(var, "patchid.stable")) {
-		*stable = git_config_bool(var, value);
-		return 0;
-	}
-
-	return git_default_config(var, value, cb);
-}
-
-int cmd_patch_id(int argc, const char **argv, const char *prefix)
-{
-	int stable = -1;
-
-	git_config(git_patch_id_config, &stable);
-
-	/* If nothing is set, default to unstable. */
-	if (stable < 0)
-		stable = 0;
-
-	if (argc == 2 && !strcmp(argv[1], "--stable"))
-		stable = 1;
-	else if (argc == 2 && !strcmp(argv[1], "--unstable"))
-		stable = 0;
-	else if (argc != 1)
-		usage(patch_id_usage);
-
-	generate_id_list(stable);
-	return 0;
-}