#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,
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;
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 == '+') {
}
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));
if ((rhs && !is_glob) || (!rhs && fetch))
goto invalid;
is_glob = 1;
- llen -= 2;
+ llen--;
} else if (rhs && is_glob) {
goto invalid;
}
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;
}
} 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;
}
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;
}
* - 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;
}
struct refspec *refspec;
refspec = parse_refspec_internal(1, fetch_refspec, 1, 1);
- if (refspec)
- free(refspec);
+ free(refspec);
return !!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);
static int match_explicit(struct ref *src, struct ref *dst,
struct ref ***dst_tail,
- struct refspec *rs,
- int errs)
+ struct refspec *rs)
{
struct ref *matched_src, *matched_dst;
char *dst_guess;
if (rs->pattern || rs->matching)
- return errs;
+ return 0;
matched_src = matched_dst = NULL;
switch (count_refspec_match(rs->src, src, &matched_src)) {
*/
matched_src = try_explicit_object_name(rs->src);
if (!matched_src)
- error("src refspec %s does not match any.", rs->src);
+ return error("src refspec %s does not match any.", rs->src);
break;
default:
- matched_src = NULL;
- error("src refspec %s matches more than one.", rs->src);
- break;
+ return error("src refspec %s matches more than one.", rs->src);
}
- if (!matched_src)
- errs = 1;
-
if (!dst_value) {
unsigned char sha1[20];
int flag;
- if (!matched_src)
- return errs;
dst_value = resolve_ref(matched_src->name, sha1, 1, &flag);
if (!dst_value ||
((flag & REF_ISSYMREF) &&
dst_value);
break;
}
- if (errs || !matched_dst)
- return 1;
- if (matched_dst->peer_ref) {
- errs = 1;
- error("dst ref %s receives from more than one src.",
+ if (!matched_dst)
+ return -1;
+ if (matched_dst->peer_ref)
+ return error("dst ref %s receives from more than one src.",
matched_dst->name);
- }
else {
matched_dst->peer_ref = matched_src;
matched_dst->force = rs->force;
}
- return errs;
+ return 0;
}
static int match_explicit_refs(struct ref *src, struct ref *dst,
{
int i, errs;
for (i = errs = 0; i < rs_nr; i++)
- errs |= match_explicit(src, dst, dst_tail, &rs[i], errs);
- return -errs;
+ errs += match_explicit(src, dst, dst_tail, &rs[i]);
+ return errs;
}
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)
}
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;
+}