X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=remote.c;h=7688f3b04d197007bce64a2bcc54c0b62c0b5922;hb=8c178687959732edab8bf91da9ed9f4fbcf7c14e;hp=ff2c8021678fee5ef12060d35c6eb1960e8792c7;hpb=5389db544defc9cd9415ffb9d8070c3e179610f2;p=git.git

diff --git a/remote.c b/remote.c
index ff2c80216..7688f3b04 100644
--- a/remote.c
+++ b/remote.c
@@ -1,6 +1,9 @@
 #include "cache.h"
 #include "remote.h"
 #include "refs.h"
+#include "commit.h"
+#include "diff.h"
+#include "revision.h"
 
 static struct refspec s_tag_refspec = {
 	0,
@@ -339,13 +342,14 @@ static int handle_config(const char *key, const char *value, void *cb)
 	if (prefixcmp(key,  "remote."))
 		return 0;
 	name = key + 7;
+	if (*name == '/') {
+		warning("Config remote shorthand cannot begin with '/': %s",
+			name);
+		return 0;
+	}
 	subkey = strrchr(name, '.');
 	if (!subkey)
 		return error("Config with no key for remote %s", name);
-	if (*subkey == '/') {
-		warning("Config remote shorthand cannot begin with '/': %s", name);
-		return 0;
-	}
 	remote = make_remote(name, subkey - name);
 	if (!strcmp(subkey, ".mirror"))
 		remote->mirror = git_config_bool(key, value);
@@ -424,6 +428,28 @@ static void read_config(void)
 	alias_all_urls();
 }
 
+/*
+ * We need to make sure the tracking branches are well formed, but a
+ * wildcard refspec in "struct refspec" must have a trailing slash. We
+ * temporarily drop the trailing '/' while calling check_ref_format(),
+ * and put it back.  The caller knows that a CHECK_REF_FORMAT_ONELEVEL
+ * error return is Ok for a wildcard refspec.
+ */
+static int verify_refname(char *name, int is_glob)
+{
+	int result, len = -1;
+
+	if (is_glob) {
+		len = strlen(name);
+		assert(name[len - 1] == '/');
+		name[len - 1] = '\0';
+	}
+	result = check_ref_format(name);
+	if (is_glob)
+		name[len - 1] = '/';
+	return result;
+}
+
 static struct refspec *parse_refspec_internal(int nr_refspec, const char **refspec, int fetch, int verify)
 {
 	int i;
@@ -431,11 +457,11 @@ static struct refspec *parse_refspec_internal(int nr_refspec, const char **refsp
 	struct refspec *rs = xcalloc(sizeof(*rs), nr_refspec);
 
 	for (i = 0; i < nr_refspec; i++) {
-		size_t llen, rlen;
+		size_t llen;
 		int is_glob;
 		const char *lhs, *rhs;
 
-		llen = rlen = is_glob = 0;
+		llen = is_glob = 0;
 
 		lhs = refspec[i];
 		if (*lhs == '+') {
@@ -455,12 +481,9 @@ static struct refspec *parse_refspec_internal(int nr_refspec, const char **refsp
 		}
 
 		if (rhs) {
-			rhs++;
-			rlen = strlen(rhs);
+			size_t rlen = strlen(++rhs);
 			is_glob = (2 <= rlen && !strcmp(rhs + rlen - 2, "/*"));
-			if (is_glob)
-				rlen -= 2;
-			rs[i].dst = xstrndup(rhs, rlen);
+			rs[i].dst = xstrndup(rhs, rlen - is_glob);
 		}
 
 		llen = (rhs ? (rhs - lhs - 1) : strlen(lhs));
@@ -468,7 +491,7 @@ static struct refspec *parse_refspec_internal(int nr_refspec, const char **refsp
 			if ((rhs && !is_glob) || (!rhs && fetch))
 				goto invalid;
 			is_glob = 1;
-			llen -= 2;
+			llen--;
 		} else if (rhs && is_glob) {
 			goto invalid;
 		}
@@ -485,7 +508,7 @@ static struct refspec *parse_refspec_internal(int nr_refspec, const char **refsp
 			if (!*rs[i].src)
 				; /* empty is ok */
 			else {
-				st = check_ref_format(rs[i].src);
+				st = verify_refname(rs[i].src, is_glob);
 				if (st && st != CHECK_REF_FORMAT_ONELEVEL)
 					goto invalid;
 			}
@@ -500,7 +523,7 @@ static struct refspec *parse_refspec_internal(int nr_refspec, const char **refsp
 			} else if (!*rs[i].dst) {
 				; /* ok */
 			} else {
-				st = check_ref_format(rs[i].dst);
+				st = verify_refname(rs[i].dst, is_glob);
 				if (st && st != CHECK_REF_FORMAT_ONELEVEL)
 					goto invalid;
 			}
@@ -515,7 +538,7 @@ static struct refspec *parse_refspec_internal(int nr_refspec, const char **refsp
 			if (!*rs[i].src)
 				; /* empty is ok */
 			else if (is_glob) {
-				st = check_ref_format(rs[i].src);
+				st = verify_refname(rs[i].src, is_glob);
 				if (st && st != CHECK_REF_FORMAT_ONELEVEL)
 					goto invalid;
 			}
@@ -529,13 +552,13 @@ static struct refspec *parse_refspec_internal(int nr_refspec, const char **refsp
 			 * - otherwise it must be a valid looking ref.
 			 */
 			if (!rs[i].dst) {
-				st = check_ref_format(rs[i].src);
+				st = verify_refname(rs[i].src, is_glob);
 				if (st && st != CHECK_REF_FORMAT_ONELEVEL)
 					goto invalid;
 			} else if (!*rs[i].dst) {
 				goto invalid;
 			} else {
-				st = check_ref_format(rs[i].dst);
+				st = verify_refname(rs[i].dst, is_glob);
 				if (st && st != CHECK_REF_FORMAT_ONELEVEL)
 					goto invalid;
 			}
@@ -557,8 +580,7 @@ int valid_fetch_refspec(const char *fetch_refspec_str)
 	struct refspec *refspec;
 
 	refspec = parse_refspec_internal(1, fetch_refspec, 1, 1);
-	if (refspec)
-		free(refspec);
+	free(refspec);
 	return !!refspec;
 }
 
@@ -684,8 +706,7 @@ int remote_find_tracking(struct remote *remote, struct refspec *refspec)
 		if (!fetch->dst)
 			continue;
 		if (fetch->pattern) {
-			if (!prefixcmp(needle, key) &&
-			    needle[strlen(key)] == '/') {
+			if (!prefixcmp(needle, key)) {
 				*result = xmalloc(strlen(value) +
 						  strlen(needle) -
 						  strlen(key) + 1);
@@ -963,9 +984,7 @@ static const struct refspec *check_pattern_match(const struct refspec *rs,
 			continue;
 		}
 
-		if (rs[i].pattern &&
-		    !prefixcmp(src->name, rs[i].src) &&
-		    src->name[strlen(rs[i].src)] == '/')
+		if (rs[i].pattern && !prefixcmp(src->name, rs[i].src))
 			return rs + i;
 	}
 	if (matching_refs != -1)
@@ -1222,3 +1241,111 @@ int resolve_remote_symref(struct ref *ref, struct ref *list)
 		}
 	return 1;
 }
+
+/*
+ * Return true if there is anything to report, otherwise false.
+ */
+int stat_tracking_info(struct branch *branch, int *num_ours, int *num_theirs)
+{
+	unsigned char sha1[20];
+	struct commit *ours, *theirs;
+	char symmetric[84];
+	struct rev_info revs;
+	const char *rev_argv[10], *base;
+	int rev_argc;
+
+	/*
+	 * Nothing to report unless we are marked to build on top of
+	 * somebody else.
+	 */
+	if (!branch ||
+	    !branch->merge || !branch->merge[0] || !branch->merge[0]->dst)
+		return 0;
+
+	/*
+	 * If what we used to build on no longer exists, there is
+	 * nothing to report.
+	 */
+	base = branch->merge[0]->dst;
+	if (!resolve_ref(base, sha1, 1, NULL))
+		return 0;
+	theirs = lookup_commit(sha1);
+	if (!theirs)
+		return 0;
+
+	if (!resolve_ref(branch->refname, sha1, 1, NULL))
+		return 0;
+	ours = lookup_commit(sha1);
+	if (!ours)
+		return 0;
+
+	/* are we the same? */
+	if (theirs == ours)
+		return 0;
+
+	/* Run "rev-list --left-right ours...theirs" internally... */
+	rev_argc = 0;
+	rev_argv[rev_argc++] = NULL;
+	rev_argv[rev_argc++] = "--left-right";
+	rev_argv[rev_argc++] = symmetric;
+	rev_argv[rev_argc++] = "--";
+	rev_argv[rev_argc] = NULL;
+
+	strcpy(symmetric, sha1_to_hex(ours->object.sha1));
+	strcpy(symmetric + 40, "...");
+	strcpy(symmetric + 43, sha1_to_hex(theirs->object.sha1));
+
+	init_revisions(&revs, NULL);
+	setup_revisions(rev_argc, rev_argv, &revs, NULL);
+	prepare_revision_walk(&revs);
+
+	/* ... and count the commits on each side. */
+	*num_ours = 0;
+	*num_theirs = 0;
+	while (1) {
+		struct commit *c = get_revision(&revs);
+		if (!c)
+			break;
+		if (c->object.flags & SYMMETRIC_LEFT)
+			(*num_ours)++;
+		else
+			(*num_theirs)++;
+	}
+
+	/* clear object flags smudged by the above traversal */
+	clear_commit_marks(ours, ALL_REV_FLAGS);
+	clear_commit_marks(theirs, ALL_REV_FLAGS);
+	return 1;
+}
+
+/*
+ * Return true when there is anything to report, otherwise false.
+ */
+int format_tracking_info(struct branch *branch, struct strbuf *sb)
+{
+	int num_ours, num_theirs;
+	const char *base;
+
+	if (!stat_tracking_info(branch, &num_ours, &num_theirs))
+		return 0;
+
+	base = branch->merge[0]->dst;
+	if (!prefixcmp(base, "refs/remotes/")) {
+		base += strlen("refs/remotes/");
+	}
+	if (!num_theirs)
+		strbuf_addf(sb, "Your branch is ahead of '%s' "
+			    "by %d commit%s.\n",
+			    base, num_ours, (num_ours == 1) ? "" : "s");
+	else if (!num_ours)
+		strbuf_addf(sb, "Your branch is behind '%s' "
+			    "by %d commit%s, "
+			    "and can be fast-forwarded.\n",
+			    base, num_theirs, (num_theirs == 1) ? "" : "s");
+	else
+		strbuf_addf(sb, "Your branch and '%s' have diverged,\n"
+			    "and have %d and %d different commit(s) each, "
+			    "respectively.\n",
+			    base, num_ours, num_theirs);
+	return 1;
+}