reftable: add print functions to the record types

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>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 71 insertions, 14 deletions

diff --git a/reftable/record.c b/reftable/record.c
index a8cee62..fbaa1fb 100644
--- a/reftable/record.c
+++ b/reftable/record.c
@@ -255,8 +255,8 @@ 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] = { 0 }; /* BUG */
 	printf("ref{%s(%" PRIu64 ") ", ref->refname, ref->update_index);
@@ -265,14 +265,14 @@ 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:
@@ -282,6 +282,11 @@ 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);
@@ -443,6 +448,12 @@ 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,
@@ -453,6 +464,7 @@ 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)
@@ -471,6 +483,21 @@ 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)
 {
@@ -617,31 +644,41 @@ 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,
+		       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 =
@@ -959,6 +996,11 @@ 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,
@@ -968,7 +1010,8 @@ 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)
@@ -1043,6 +1086,13 @@ 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,
@@ -1053,6 +1103,7 @@ 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)
@@ -1255,3 +1306,9 @@ struct reftable_record reftable_new_record(uint8_t typ)
 	}
 	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);
+}