sha1-name: pass len argument to interpret_branch_name()

This is useful to make sure we don't step outside the boundaries of what
we are interpreting at the moment. For example while interpreting
foobar@{u}~1, the job of interpret_branch_name() ends right before ~1,
but there's no way to figure that out inside the function, unless the
len argument is passed.

So let's do that.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/cache.h b/cache.h
index 85b544f38d934fe68d1e155c86337f1400eea14d..9fbc5fa1304f449f9528542f448ed7fb16704ffa 100644 (file)
--- a/cache.h
+++ b/cache.h
@@ -893,7 +893,7 @@ extern char *resolve_refdup(const char *ref, unsigned char *sha1, int reading, i
 
 extern int dwim_ref(const char *str, int len, unsigned char *sha1, char **ref);
 extern int dwim_log(const char *str, int len, unsigned char *sha1, char **ref);
-extern int interpret_branch_name(const char *str, struct strbuf *);
+extern int interpret_branch_name(const char *str, int len, struct strbuf *);
 extern int get_sha1_mb(const char *str, unsigned char *sha1);
 
 extern int refname_match(const char *abbrev_name, const char *full_name, const char **rules);

diff --git a/refs.c b/refs.c
index 7922261580515859bc89005c4c69e8623c50c728..8fd5faf8de0976f50becabaf50d73e01bd2d57b6 100644 (file)
--- a/refs.c
+++ b/refs.c
@@ -1951,7 +1951,7 @@ static int remove_empty_directories(const char *file)
 static char *substitute_branch_name(const char **string, int *len)
 {
        struct strbuf buf = STRBUF_INIT;
-       int ret = interpret_branch_name(*string, &buf);
+       int ret = interpret_branch_name(*string, *len, &buf);
 
        if (ret == *len) {
                size_t size;

diff --git a/revision.c b/revision.c
index 84ccc0529b75508be5d1603a9e73790ca2b102fe..3ef13841f4ff39cf315b830b0dc4669cdf10ea3e 100644 (file)
--- a/revision.c
+++ b/revision.c
@@ -200,7 +200,7 @@ static void add_pending_object_with_mode(struct rev_info *revs,
                revs->no_walk = 0;
        if (revs->reflog_info && obj->type == OBJ_COMMIT) {
                struct strbuf buf = STRBUF_INIT;
-               int len = interpret_branch_name(name, &buf);
+               int len = interpret_branch_name(name, 0, &buf);
                int st;
 
                if (0 < len && name[len] && buf.len)

diff --git a/sha1_name.c b/sha1_name.c
index 65ad066d9bb4efd9b61142b40d790bac9543de1d..93197b91e34df885fa2f5c5100f1be60c8a6acd9 100644 (file)
--- a/sha1_name.c
+++ b/sha1_name.c
@@ -1012,7 +1012,7 @@ static int reinterpret(const char *name, int namelen, int len, struct strbuf *bu
        int ret;
 
        strbuf_add(buf, name + len, namelen - len);
-       ret = interpret_branch_name(buf->buf, &tmp);
+       ret = interpret_branch_name(buf->buf, buf->len, &tmp);
        /* that data was not interpreted, remove our cruft */
        if (ret < 0) {
                strbuf_setlen(buf, used);
@@ -1046,14 +1046,16 @@ static int reinterpret(const char *name, int namelen, int len, struct strbuf *bu
  * If the input was ok but there are not N branch switches in the
  * reflog, it returns 0.
  */
-int interpret_branch_name(const char *name, struct strbuf *buf)
+int interpret_branch_name(const char *name, int namelen, struct strbuf *buf)
 {
        char *cp;
        struct branch *upstream;
-       int namelen = strlen(name);
        int len = interpret_nth_prior_checkout(name, buf);
        int tmp_len;
 
+       if (!namelen)
+               namelen = strlen(name);
+
        if (!len) {
                return len; /* syntax Ok, not enough switches */
        } else if (len > 0) {
@@ -1100,7 +1102,7 @@ int interpret_branch_name(const char *name, struct strbuf *buf)
 int strbuf_branchname(struct strbuf *sb, const char *name)
 {
        int len = strlen(name);
-       int used = interpret_branch_name(name, sb);
+       int used = interpret_branch_name(name, len, sb);
 
        if (used == len)
                return 0;