Merge branch 'rs/submodule-config-code-cleanup'

Code cleanup.

* rs/submodule-config-code-cleanup:
submodule-config: fix test binary crashing when no arguments given
submodule-config: combine early return code into one goto
submodule-config: passing name reference for .gitmodule blobs
submodule-config: use explicit empty string instead of strbuf in config_from()

diff --git a/submodule-config.c b/submodule-config.c
index 077db4054f7b38b31d9c6f11e2b589e9111d4a8c..faedb1a4899639567d8d6d6af75338c26be8f7ae 100644 (file)
--- a/submodule-config.c
+++ b/submodule-config.c
@@ -371,9 +371,9 @@ static int parse_config(const char *var, const char *value, void *data)
 }
 
 static int gitmodule_sha1_from_commit(const unsigned char *commit_sha1,
-                                     unsigned char *gitmodules_sha1)
+                                     unsigned char *gitmodules_sha1,
+                                     struct strbuf *rev)
 {
-       struct strbuf rev = STRBUF_INIT;
        int ret = 0;
 
        if (is_null_sha1(commit_sha1)) {
@@ -381,11 +381,10 @@ static int gitmodule_sha1_from_commit(const unsigned char *commit_sha1,
                return 1;
        }
 
-       strbuf_addf(&rev, "%s:.gitmodules", sha1_to_hex(commit_sha1));
-       if (get_sha1(rev.buf, gitmodules_sha1) >= 0)
+       strbuf_addf(rev, "%s:.gitmodules", sha1_to_hex(commit_sha1));
+       if (get_sha1(rev->buf, gitmodules_sha1) >= 0)
                ret = 1;
 
-       strbuf_release(&rev);
        return ret;
 }
 
@@ -399,7 +398,7 @@ static const struct submodule *config_from(struct submodule_cache *cache,
 {
        struct strbuf rev = STRBUF_INIT;
        unsigned long config_size;
-       char *config;
+       char *config = NULL;
        unsigned char sha1[20];
        enum object_type type;
        const struct submodule *submodule = NULL;
@@ -420,8 +419,8 @@ static const struct submodule *config_from(struct submodule_cache *cache,
                return entry->config;
        }
 
-       if (!gitmodule_sha1_from_commit(commit_sha1, sha1))
-               return NULL;
+       if (!gitmodule_sha1_from_commit(commit_sha1, sha1, &rev))
+               goto out;
 
        switch (lookup_type) {
        case lookup_name:
@@ -432,16 +431,11 @@ static const struct submodule *config_from(struct submodule_cache *cache,
                break;
        }
        if (submodule)
-               return submodule;
+               goto out;
 
        config = read_sha1_file(sha1, &type, &config_size);
-       if (!config)
-               return NULL;
-
-       if (type != OBJ_BLOB) {
-               free(config);
-               return NULL;
-       }
+       if (!config || type != OBJ_BLOB)
+               goto out;
 
        /* fill the submodule config into the cache */
        parameter.cache = cache;
@@ -450,6 +444,7 @@ static const struct submodule *config_from(struct submodule_cache *cache,
        parameter.overwrite = 0;
        git_config_from_mem(parse_config, "submodule-blob", rev.buf,
                        config, config_size, &parameter);
+       strbuf_release(&rev);
        free(config);
 
        switch (lookup_type) {
@@ -460,6 +455,11 @@ static const struct submodule *config_from(struct submodule_cache *cache,
        default:
                return NULL;
        }
+
+out:
+       strbuf_release(&rev);
+       free(config);
+       return submodule;
 }
 
 static const struct submodule *config_from_path(struct submodule_cache *cache,

diff --git a/t/helper/test-submodule-config.c b/t/helper/test-submodule-config.c
index 61049b87a07c638a9211b11484c503ffc56a1f9e..2f144d539a4822619a9383ded2d3adb270484624 100644 (file)
--- a/t/helper/test-submodule-config.c
+++ b/t/helper/test-submodule-config.c
@@ -23,7 +23,7 @@ int cmd_main(int argc, const char **argv)
 
        arg++;
        my_argc--;
-       while (starts_with(arg[0], "--")) {
+       while (arg[0] && starts_with(arg[0], "--")) {
                if (!strcmp(arg[0], "--url"))
                        output_url = 1;
                if (!strcmp(arg[0], "--name"))

diff --git a/t/t7411-submodule-config.sh b/t/t7411-submodule-config.sh
index fc97c3314e2d89e11b4a846457f5e183f4fc42c0..400e2b1439a9e7fa329f78b8c5d600f34cf375d2 100755 (executable)
--- a/t/t7411-submodule-config.sh
+++ b/t/t7411-submodule-config.sh
@@ -82,6 +82,17 @@ test_expect_success 'error in one submodule config lets continue' '
        )
 '
 
+test_expect_success 'error message contains blob reference' '
+       (cd super &&
+               sha1=$(git rev-parse HEAD) &&
+               test-submodule-config \
+                       HEAD b \
+                       HEAD submodule \
+                               2>actual_err &&
+               grep "submodule-blob $sha1:.gitmodules" actual_err >/dev/null
+       )
+'
+
 cat >super/expect_url <<EOF
 Submodule url: 'git@somewhere.else.net:a.git' for path 'b'
 Submodule url: 'git@somewhere.else.net:submodule.git' for path 'submodule'