diff mbox series

[v7,15/16] reftable: add print functions to the record types

Message ID 1e8785bbc2620ce7550f98d5ed6b3761f17c622e.1643051624.git.gitgitgadget@gmail.com (mailing list archive)
State New, archived
Headers show
Series Reftable coverity fixes | expand

Commit Message

Han-Wen Nienhuys Jan. 24, 2022, 7:13 p.m. UTC 
From: Han-Wen Nienhuys <hanwen@google.com>

This isn't used per se, but it is useful for debugging, especially
Windows CI failures.

Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
---
 reftable/record.c      | 88 +++++++++++++++++++++++++++++++++++-------
 reftable/record.h      |  4 ++
 reftable/record_test.c | 20 +++++++++-
 3 files changed, 96 insertions(+), 16 deletions(-)
diff mbox series

Patch

diff --git a/reftable/record.c b/reftable/record.c
index 238ff882aab..c57bac0e96a 100644
--- a/reftable/record.c
+++ b/reftable/record.c
@@ -269,8 +269,8 @@  static void hex_format(char *dest, uint8_t *src, int hash_size)
 	}
 }
 
-void reftable_ref_record_print(const struct reftable_ref_record *ref,
-			       uint32_t hash_id)
+static void reftable_ref_record_print_sz(const struct reftable_ref_record *ref,
+					 int hash_size)
 {
 	char hex[GIT_MAX_HEXSZ + 1];
 	printf("ref{%s(%" PRIu64 ") ", ref->refname, ref->update_index);
@@ -279,14 +279,14 @@  void reftable_ref_record_print(const struct reftable_ref_record *ref,
 		printf("=> %s", ref->value.symref);
 		break;
 	case REFTABLE_REF_VAL2:
-		hex_format(hex, ref->value.val2.value, hash_size(hash_id));
+		hex_format(hex, ref->value.val2.value, hash_size);
 		printf("val 2 %s", hex);
 		hex_format(hex, ref->value.val2.target_value,
-			   hash_size(hash_id));
+			   hash_size);
 		printf("(T %s)", hex);
 		break;
 	case REFTABLE_REF_VAL1:
-		hex_format(hex, ref->value.val1, hash_size(hash_id));
+		hex_format(hex, ref->value.val1, hash_size);
 		printf("val 1 %s", hex);
 		break;
 	case REFTABLE_REF_DELETION:
@@ -296,6 +296,11 @@  void reftable_ref_record_print(const struct reftable_ref_record *ref,
 	printf("}\n");
 }
 
+void reftable_ref_record_print(const struct reftable_ref_record *ref,
+			       uint32_t hash_id) {
+	reftable_ref_record_print_sz(ref, hash_size(hash_id));
+}
+
 static void reftable_ref_record_release_void(void *rec)
 {
 	reftable_ref_record_release(rec);
@@ -456,6 +461,13 @@  static int reftable_ref_record_equal_void(const void *a,
 	return reftable_ref_record_equal(ra, rb, hash_size);
 }
 
+static void reftable_ref_record_print_void(const void *rec,
+					   int hash_size)
+{
+	reftable_ref_record_print_sz(
+		(struct reftable_ref_record *) rec, hash_size);
+}
+
 static struct reftable_record_vtable reftable_ref_record_vtable = {
 	.key = &reftable_ref_record_key,
 	.type = BLOCK_TYPE_REF,
@@ -466,6 +478,7 @@  static struct reftable_record_vtable reftable_ref_record_vtable = {
 	.release = &reftable_ref_record_release_void,
 	.is_deletion = &reftable_ref_record_is_deletion_void,
 	.equal = &reftable_ref_record_equal_void,
+	.print = &reftable_ref_record_print_void,
 };
 
 static void reftable_obj_record_key(const void *r, struct strbuf *dest)
@@ -484,6 +497,21 @@  static void reftable_obj_record_release(void *rec)
 	memset(obj, 0, sizeof(struct reftable_obj_record));
 }
 
+static void reftable_obj_record_print(const void *rec, int hash_size)
+{
+	const struct reftable_obj_record *obj = rec;
+	char hex[GIT_MAX_HEXSZ + 1] = { 0 };
+	struct strbuf offset_str = STRBUF_INIT;
+	int i;
+
+	for (i = 0; i < obj->offset_len; i++)
+		strbuf_addf(&offset_str, "%"PRIu64 " ", obj->offsets[i]);
+	hex_format(hex, obj->hash_prefix, obj->hash_prefix_len);
+	printf("prefix %s (len %d), offsets [%s]\n",
+	       hex, obj->hash_prefix_len, offset_str.buf);
+	strbuf_release(&offset_str);
+}
+
 static void reftable_obj_record_copy_from(void *rec, const void *src_rec,
 					  int hash_size)
 {
@@ -627,31 +655,41 @@  static struct reftable_record_vtable reftable_obj_record_vtable = {
 	.release = &reftable_obj_record_release,
 	.is_deletion = &not_a_deletion,
 	.equal = &reftable_obj_record_equal_void,
+	.print = &reftable_obj_record_print,
 };
 
-void reftable_log_record_print(struct reftable_log_record *log,
-			       uint32_t hash_id)
+static void reftable_log_record_print_sz(struct reftable_log_record *log,
+					 int hash_size)
 {
 	char hex[GIT_MAX_HEXSZ + 1] = { 0 };
 
 	switch (log->value_type) {
 	case REFTABLE_LOG_DELETION:
-		printf("log{%s(%" PRIu64 ") delete", log->refname,
+		printf("log{%s(%"PRIu64 ") delete\n", log->refname,
 		       log->update_index);
 		break;
 	case REFTABLE_LOG_UPDATE:
-		printf("log{%s(%" PRIu64 ") %s <%s> %" PRIu64 " %04d\n",
-		       log->refname, log->update_index, log->value.update.name,
-		       log->value.update.email, log->value.update.time,
+		printf("log{%s(%"PRIu64 ") %s <%s> %" PRIu64 " %04d\n",
+		       log->refname, log->update_index,
+		       log->value.update.name ? log->value.update.name : "",
+		       log->value.update.email ? log->value.update.email : "",
+		       log->value.update.time,
 		       log->value.update.tz_offset);
-		hex_format(hex, log->value.update.old_hash, hash_size(hash_id));
+		hex_format(hex, log->value.update.old_hash, hash_size);
 		printf("%s => ", hex);
-		hex_format(hex, log->value.update.new_hash, hash_size(hash_id));
-		printf("%s\n\n%s\n}\n", hex, log->value.update.message);
+		hex_format(hex, log->value.update.new_hash, hash_size);
+		printf("%s\n\n%s\n}\n", hex,
+		       log->value.update.message ? log->value.update.message : "");
 		break;
 	}
 }
 
+void reftable_log_record_print(struct reftable_log_record *log,
+				      uint32_t hash_id)
+{
+	reftable_log_record_print_sz(log, hash_size(hash_id));
+}
+
 static void reftable_log_record_key(const void *r, struct strbuf *dest)
 {
 	const struct reftable_log_record *rec =
@@ -969,6 +1007,11 @@  static int reftable_log_record_is_deletion_void(const void *p)
 		(const struct reftable_log_record *)p);
 }
 
+static void reftable_log_record_print_void(const void *rec, int hash_size)
+{
+	reftable_log_record_print_sz((struct reftable_log_record*)rec, hash_size);
+}
+
 static struct reftable_record_vtable reftable_log_record_vtable = {
 	.key = &reftable_log_record_key,
 	.type = BLOCK_TYPE_LOG,
@@ -978,7 +1021,8 @@  static struct reftable_record_vtable reftable_log_record_vtable = {
 	.decode = &reftable_log_record_decode,
 	.release = &reftable_log_record_release_void,
 	.is_deletion = &reftable_log_record_is_deletion_void,
-	.equal = &reftable_log_record_equal_void
+	.equal = &reftable_log_record_equal_void,
+	.print = &reftable_log_record_print_void,
 };
 
 static void reftable_index_record_key(const void *r, struct strbuf *dest)
@@ -1054,6 +1098,13 @@  static int reftable_index_record_equal(const void *a, const void *b, int hash_si
 	return ia->offset == ib->offset && !strbuf_cmp(&ia->last_key, &ib->last_key);
 }
 
+static void reftable_index_record_print(const void *rec, int hash_size)
+{
+	const struct reftable_index_record *idx = rec;
+	/* TODO: escape null chars? */
+	printf("\"%s\" %" PRIu64 "\n", idx->last_key.buf, idx->offset);
+}
+
 static struct reftable_record_vtable reftable_index_record_vtable = {
 	.key = &reftable_index_record_key,
 	.type = BLOCK_TYPE_INDEX,
@@ -1064,6 +1115,7 @@  static struct reftable_record_vtable reftable_index_record_vtable = {
 	.release = &reftable_index_record_release,
 	.is_deletion = &not_a_deletion,
 	.equal = &reftable_index_record_equal,
+	.print = &reftable_index_record_print,
 };
 
 void reftable_record_key(struct reftable_record *rec, struct strbuf *dest)
@@ -1251,3 +1303,9 @@  struct reftable_record reftable_new_record(uint8_t type)
 	}
 	return clean;
 }
+
+void reftable_record_print(struct reftable_record *rec, int hash_size)
+{
+	printf("'%c': ", rec->type);
+	reftable_record_vtable(rec)->print(reftable_record_data(rec), hash_size);
+}
diff --git a/reftable/record.h b/reftable/record.h
index 010a322e901..fd80cd451d5 100644
--- a/reftable/record.h
+++ b/reftable/record.h
@@ -61,6 +61,9 @@  struct reftable_record_vtable {
 
 	/* Are two records equal? This assumes they have the same type. Returns 0 for non-equal. */
 	int (*equal)(const void *a, const void *b, int hash_size);
+
+	/* Print on stdout, for debugging. */
+	void (*print)(const void *rec, int hash_size);
 };
 
 /* returns true for recognized block types. Block start with the block type. */
@@ -112,6 +115,7 @@  struct reftable_record {
 
 /* see struct record_vtable */
 int reftable_record_equal(struct reftable_record *a, struct reftable_record *b, int hash_size);
+void reftable_record_print(struct reftable_record *rec, int hash_size);
 void reftable_record_key(struct reftable_record *rec, struct strbuf *dest);
 uint8_t reftable_record_type(struct reftable_record *rec);
 void reftable_record_copy_from(struct reftable_record *rec,
diff --git a/reftable/record_test.c b/reftable/record_test.c
index 4a025c48104..847abfa2b04 100644
--- a/reftable/record_test.c
+++ b/reftable/record_test.c
@@ -23,6 +23,10 @@  static void test_copy(struct reftable_record *rec)
 	/* do it twice to catch memory leaks */
 	reftable_record_copy_from(&copy, rec, GIT_SHA1_RAWSZ);
 	EXPECT(reftable_record_equal(rec, &copy, GIT_SHA1_RAWSZ));
+
+	puts("testing print coverage:\n");
+	reftable_record_print(&copy, GIT_SHA1_RAWSZ);
+
 	reftable_record_release(&copy);
 }
 
@@ -175,7 +179,7 @@  static void test_reftable_log_record_equal(void)
 static void test_reftable_log_record_roundtrip(void)
 {
 	int i;
-	struct reftable_log_record in[2] = {
+	struct reftable_log_record in[] = {
 		{
 			.refname = xstrdup("refs/heads/master"),
 			.update_index = 42,
@@ -196,10 +200,24 @@  static void test_reftable_log_record_roundtrip(void)
 			.refname = xstrdup("refs/heads/master"),
 			.update_index = 22,
 			.value_type = REFTABLE_LOG_DELETION,
+		},
+		{
+			/* make sure we handle optional fields correctly. */
+			.refname = xstrdup("branch"),
+			.update_index = 33,
+			.value_type = REFTABLE_LOG_UPDATE,
+			.value = {
+				.update = {
+					.old_hash = reftable_malloc(GIT_SHA1_RAWSZ),
+					.new_hash = reftable_malloc(GIT_SHA1_RAWSZ),
+				},
+			},
 		}
 	};
 	set_test_hash(in[0].value.update.new_hash, 1);
 	set_test_hash(in[0].value.update.old_hash, 2);
+	set_test_hash(in[2].value.update.new_hash, 3);
+	set_test_hash(in[2].value.update.old_hash, 4);
 	for (i = 0; i < ARRAY_SIZE(in); i++) {
 		struct reftable_record rec = { .type = BLOCK_TYPE_LOG };
 		struct strbuf key = STRBUF_INIT;