Convert resolve_ref+xstrdup to new resolve_refdup function

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/branch.c b/builtin/branch.c
index e1e486e4c51194e09df3779be254cb72855d1103..c459f0bab065646f26f9acb9c758292894a4e28b 100644 (file)
--- a/builtin/branch.c
+++ b/builtin/branch.c
@@ -104,6 +104,7 @@ static int branch_merged(int kind, const char *name,
         */
        struct commit *reference_rev = NULL;
        const char *reference_name = NULL;
+       void *reference_name_to_free = NULL;
        int merged;
 
        if (kind == REF_LOCAL_BRANCH) {
@@ -114,11 +115,9 @@ static int branch_merged(int kind, const char *name,
                    branch->merge &&
                    branch->merge[0] &&
                    branch->merge[0]->dst &&
-                   (reference_name =
-                    resolve_ref(branch->merge[0]->dst, sha1, 1, NULL)) != NULL) {
-                       reference_name = xstrdup(reference_name);
+                   (reference_name = reference_name_to_free =
+                    resolve_refdup(branch->merge[0]->dst, sha1, 1, NULL)) != NULL)
                        reference_rev = lookup_commit_reference(sha1);
-               }
        }
        if (!reference_rev)
                reference_rev = head_rev;
@@ -143,7 +142,7 @@ static int branch_merged(int kind, const char *name,
                                "         '%s', even though it is merged to HEAD."),
                                name, reference_name);
        }
-       free((char *)reference_name);
+       free(reference_name_to_free);
        return merged;
 }
 
@@ -731,10 +730,9 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
 
        track = git_branch_track;
 
-       head = resolve_ref("HEAD", head_sha1, 0, NULL);
+       head = resolve_refdup("HEAD", head_sha1, 0, NULL);
        if (!head)
                die(_("Failed to resolve HEAD as a valid ref."));
-       head = xstrdup(head);
        if (!strcmp(head, "HEAD")) {
                detached = 1;
        } else {

diff --git a/builtin/checkout.c b/builtin/checkout.c
index b7c630287dda662630af9883655ed23bd50e7b7e..00740bd6796785cedd8d6baf730016f93a379cd8 100644 (file)
--- a/builtin/checkout.c
+++ b/builtin/checkout.c
@@ -696,17 +696,14 @@ static int switch_branches(struct checkout_opts *opts, struct branch_info *new)
 {
        int ret = 0;
        struct branch_info old;
+       void *path_to_free;
        unsigned char rev[20];
        int flag;
        memset(&old, 0, sizeof(old));
-       old.path = resolve_ref("HEAD", rev, 0, &flag);
-       if (old.path)
-               old.path = xstrdup(old.path);
+       old.path = path_to_free = resolve_refdup("HEAD", rev, 0, &flag);
        old.commit = lookup_commit_reference_gently(rev, 1);
-       if (!(flag & REF_ISSYMREF)) {
-               free((char *)old.path);
+       if (!(flag & REF_ISSYMREF))
                old.path = NULL;
-       }
 
        if (old.path && !prefixcmp(old.path, "refs/heads/"))
                old.name = old.path + strlen("refs/heads/");
@@ -720,8 +717,10 @@ static int switch_branches(struct checkout_opts *opts, struct branch_info *new)
        }
 
        ret = merge_working_tree(opts, &old, new);
-       if (ret)
+       if (ret) {
+               free(path_to_free);
                return ret;
+       }
 
        if (!opts->quiet && !old.path && old.commit && new->commit != old.commit)
                orphaned_commit_warning(old.commit);
@@ -729,7 +728,7 @@ static int switch_branches(struct checkout_opts *opts, struct branch_info *new)
        update_refs_for_switch(opts, &old, new);
 
        ret = post_checkout_hook(old.commit, new->commit, 1);
-       free((char *)old.path);
+       free(path_to_free);
        return ret || opts->writeout_error;
 }
 

diff --git a/builtin/fmt-merge-msg.c b/builtin/fmt-merge-msg.c
index bdfa0ea05d99089937b9e753cf85a8489a5e27cb..c81a7fef2680620d521e118d60e8c59893d59234 100644 (file)
--- a/builtin/fmt-merge-msg.c
+++ b/builtin/fmt-merge-msg.c
@@ -372,14 +372,15 @@ int fmt_merge_msg(struct strbuf *in, struct strbuf *out,
        int i = 0, pos = 0;
        unsigned char head_sha1[20];
        const char *current_branch;
+       void *current_branch_to_free;
 
        /* get current branch */
-       current_branch = resolve_ref("HEAD", head_sha1, 1, NULL);
+       current_branch = current_branch_to_free =
+               resolve_refdup("HEAD", head_sha1, 1, NULL);
        if (!current_branch)
                die("No current branch");
        if (!prefixcmp(current_branch, "refs/heads/"))
                current_branch += 11;
-       current_branch = xstrdup(current_branch);
 
        /* get a line */
        while (pos < in->len) {
@@ -421,7 +422,7 @@ int fmt_merge_msg(struct strbuf *in, struct strbuf *out,
        }
 
        strbuf_complete_line(out);
-       free((char *)current_branch);
+       free(current_branch_to_free);
        return 0;
 }
 

diff --git a/builtin/for-each-ref.c b/builtin/for-each-ref.c
index d90e5d2b29f9ac72a104d6308c04497991a03c17..b01d76a24323e86e9c9cbf1cd3adc9c0d1b2c6d8 100644 (file)
--- a/builtin/for-each-ref.c
+++ b/builtin/for-each-ref.c
@@ -628,11 +628,8 @@ static void populate_value(struct refinfo *ref)
 
        if (need_symref && (ref->flag & REF_ISSYMREF) && !ref->symref) {
                unsigned char unused1[20];
-               const char *symref;
-               symref = resolve_ref(ref->refname, unused1, 1, NULL);
-               if (symref)
-                       ref->symref = xstrdup(symref);
-               else
+               ref->symref = resolve_refdup(ref->refname, unused1, 1, NULL);
+               if (!ref->symref)
                        ref->symref = "";
        }
 

diff --git a/builtin/merge.c b/builtin/merge.c
index a1c85344b2b54f957ea69ace864ea99b7d295405..a3cd5e8566af7300703dc925708bce23d6acd7a5 100644 (file)
--- a/builtin/merge.c
+++ b/builtin/merge.c
@@ -1096,6 +1096,7 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
        struct commit_list *common = NULL;
        const char *best_strategy = NULL, *wt_strategy = NULL;
        struct commit_list **remotes = &remoteheads;
+       void *branch_to_free;
 
        if (argc == 2 && !strcmp(argv[1], "-h"))
                usage_with_options(builtin_merge_usage, builtin_merge_options);
@@ -1104,12 +1105,9 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
         * Check if we are _not_ on a detached HEAD, i.e. if there is a
         * current branch.
         */
-       branch = resolve_ref("HEAD", head_sha1, 0, &flag);
-       if (branch) {
-               if (!prefixcmp(branch, "refs/heads/"))
-                       branch += 11;
-               branch = xstrdup(branch);
-       }
+       branch = branch_to_free = resolve_refdup("HEAD", head_sha1, 0, &flag);
+       if (branch && !prefixcmp(branch, "refs/heads/"))
+               branch += 11;
        if (!branch || is_null_sha1(head_sha1))
                head_commit = NULL;
        else
@@ -1520,6 +1518,6 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
                ret = suggest_conflicts(option_renormalize);
 
 done:
-       free((char *)branch);
+       free(branch_to_free);
        return ret;
 }

diff --git a/builtin/notes.c b/builtin/notes.c
index 10b8bc7ad9c392d9dad9e06cf2d1b3ae3f7fd001..667e20a1e13770b845c0774e754043fae514a4b1 100644 (file)
--- a/builtin/notes.c
+++ b/builtin/notes.c
@@ -804,6 +804,7 @@ static int merge_commit(struct notes_merge_options *o)
        struct notes_tree *t;
        struct commit *partial;
        struct pretty_print_context pretty_ctx;
+       void *local_ref_to_free;
        int ret;
 
        /*
@@ -826,10 +827,10 @@ static int merge_commit(struct notes_merge_options *o)
        t = xcalloc(1, sizeof(struct notes_tree));
        init_notes(t, "NOTES_MERGE_PARTIAL", combine_notes_overwrite, 0);
 
-       o->local_ref = resolve_ref("NOTES_MERGE_REF", sha1, 0, NULL);
+       o->local_ref = local_ref_to_free =
+               resolve_refdup("NOTES_MERGE_REF", sha1, 0, NULL);
        if (!o->local_ref)
                die("Failed to resolve NOTES_MERGE_REF");
-       o->local_ref = xstrdup(o->local_ref);
 
        if (notes_merge_commit(o, t, partial, sha1))
                die("Failed to finalize notes merge");
@@ -846,7 +847,7 @@ static int merge_commit(struct notes_merge_options *o)
        free_notes(t);
        strbuf_release(&msg);
        ret = merge_abort(o);
-       free((char *)o->local_ref);
+       free(local_ref_to_free);
        return ret;
 }
 

diff --git a/builtin/receive-pack.c b/builtin/receive-pack.c
index b6d957cb0d2659f2207287598b3566ed37a35ae0..62afac3ec1ee4558b186e08e2f664216ac17bca5 100644 (file)
--- a/builtin/receive-pack.c
+++ b/builtin/receive-pack.c
@@ -37,6 +37,7 @@ static int prefer_ofs_delta = 1;
 static int auto_update_server_info;
 static int auto_gc = 1;
 static const char *head_name;
+static void *head_name_to_free;
 static int sent_capabilities;
 
 static enum deny_action parse_deny_action(const char *var, const char *value)
@@ -695,10 +696,8 @@ static void execute_commands(struct command *commands, const char *unpacker_erro
 
        check_aliased_updates(commands);
 
-       free((char *)head_name);
-       head_name = resolve_ref("HEAD", sha1, 0, NULL);
-       if (head_name)
-               head_name = xstrdup(head_name);
+       free(head_name_to_free);
+       head_name = head_name_to_free = resolve_refdup("HEAD", sha1, 0, NULL);
 
        for (cmd = commands; cmd; cmd = cmd->next)
                if (!cmd->skip_update)

diff --git a/builtin/show-branch.c b/builtin/show-branch.c
index 4b480d7c7ca6c6258a5cd82cfc88df62cd0d218f..a1f148e48c70173b30893a9a92d53f1fffe19e76 100644 (file)
--- a/builtin/show-branch.c
+++ b/builtin/show-branch.c
@@ -726,10 +726,8 @@ int cmd_show_branch(int ac, const char **av, const char *prefix)
 
                if (ac == 0) {
                        static const char *fake_av[2];
-                       const char *refname;
 
-                       refname = resolve_ref("HEAD", sha1, 1, NULL);
-                       fake_av[0] = xstrdup(refname);
+                       fake_av[0] = resolve_refdup("HEAD", sha1, 1, NULL);
                        fake_av[1] = NULL;
                        av = fake_av;
                        ac = 1;

diff --git a/cache.h b/cache.h
index 8c98d056674c9a426215bf93398fe922a1a90679..4887a3e3314c15202ecfe68298ca4bfc9a2cb99d 100644 (file)
--- a/cache.h
+++ b/cache.h
@@ -866,6 +866,7 @@ extern int read_ref(const char *filename, unsigned char *sha1);
  * errno is sometimes set on errors, but not always.
  */
 extern const char *resolve_ref(const char *ref, unsigned char *sha1, int reading, int *flag);
+extern char *resolve_refdup(const char *ref, unsigned char *sha1, int reading, int *flag);
 
 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);

diff --git a/reflog-walk.c b/reflog-walk.c
index da71a85851aa3664f14b406c57cbedbee79591f2..64c677fc49d7874736221b1828f96d8652cb1fb3 100644 (file)
--- a/reflog-walk.c
+++ b/reflog-walk.c
@@ -50,11 +50,12 @@ static struct complete_reflogs *read_complete_reflog(const char *ref)
        for_each_reflog_ent(ref, read_one_reflog, reflogs);
        if (reflogs->nr == 0) {
                unsigned char sha1[20];
-               const char *name = resolve_ref(ref, sha1, 1, NULL);
+               const char *name;
+               void *name_to_free;
+               name = name_to_free = resolve_refdup(ref, sha1, 1, NULL);
                if (name) {
-                       name = xstrdup(name);
                        for_each_reflog_ent(name, read_one_reflog, reflogs);
-                       free((char *)name);
+                       free(name_to_free);
                }
        }
        if (reflogs->nr == 0) {
@@ -171,11 +172,11 @@ int add_reflog_for_walk(struct reflog_walk_info *info,
        else {
                if (*branch == '\0') {
                        unsigned char sha1[20];
-                       const char *head = resolve_ref("HEAD", sha1, 0, NULL);
-                       if (!head)
-                               die ("No current branch");
                        free(branch);
-                       branch = xstrdup(head);
+                       branch = resolve_refdup("HEAD", sha1, 0, NULL);
+                       if (!branch)
+                               die ("No current branch");
+
                }
                reflogs = read_complete_reflog(branch);
                if (!reflogs || reflogs->nr == 0) {

diff --git a/refs.c b/refs.c
index f5cb297292f5ae577e3d2719f5f78512aae8cf28..8ffb32fe58007d22c4380bd860ccb6e1b8d15c75 100644 (file)
--- a/refs.c
+++ b/refs.c
@@ -605,6 +605,12 @@ const char *resolve_ref(const char *ref, unsigned char *sha1, int reading, int *
        return ref;
 }
 
+char *resolve_refdup(const char *ref, unsigned char *sha1, int reading, int *flag)
+{
+       const char *ret = resolve_ref(ref, sha1, reading, flag);
+       return ret ? xstrdup(ret) : NULL;
+}
+
 /* The argument to filter_refs */
 struct ref_filter {
        const char *pattern;

diff --git a/wt-status.c b/wt-status.c
index 70fdb76ff2b5100c6d20f9f3b758e1ac8df314e1..9ffc535f1ab0296fd0a3330b1f136d69f9ac9bb2 100644 (file)
--- a/wt-status.c
+++ b/wt-status.c
@@ -111,7 +111,6 @@ void status_printf_more(struct wt_status *s, const char *color,
 void wt_status_prepare(struct wt_status *s)
 {
        unsigned char sha1[20];
-       const char *head;
 
        memset(s, 0, sizeof(*s));
        memcpy(s->color_palette, default_wt_status_colors,
@@ -119,8 +118,7 @@ void wt_status_prepare(struct wt_status *s)
        s->show_untracked_files = SHOW_NORMAL_UNTRACKED_FILES;
        s->use_color = -1;
        s->relative_paths = 1;
-       head = resolve_ref("HEAD", sha1, 0, NULL);
-       s->branch = head ? xstrdup(head) : NULL;
+       s->branch = resolve_refdup("HEAD", sha1, 0, NULL);
        s->reference = "HEAD";
        s->fp = stdout;
        s->index_file = get_index_file();