[PATCH 4/6] tag: add format specifier to gpg_verify_tag

[santiago@nyu.edu]

From: Lukas P <luk.puehringer@gmail.com>

Calling functions for gpg_verify_tag() may desire to print relevant
information about the header for further verification. Add an optional
format argument to print any desired information after GPG verification.

Signed-off-by: Lukas Puehringer <lukas.puehringer@nyu.edu>
---
 builtin/tag.c        |  2 +-
 builtin/verify-tag.c |  6 ++++--
 tag.c                | 14 ++++++++++++--
 tag.h                |  4 ++--
 4 files changed, 19 insertions(+), 7 deletions(-)

diff --git a/builtin/tag.c b/builtin/tag.c
index dbf271f..94ed8a2 100644
--- a/builtin/tag.c
+++ b/builtin/tag.c
@@ -106,7 +106,7 @@ static int delete_tag(const char *name, const char *ref,
 static int verify_tag(const char *name, const char *ref,
 				const unsigned char *sha1)
 {
-	return gpg_verify_tag(sha1, name, GPG_VERIFY_VERBOSE);
+	return verify_and_format_tag(sha1, name, NULL, GPG_VERIFY_VERBOSE);
 }
 
 static int do_sign(struct strbuf *buffer)
diff --git a/builtin/verify-tag.c b/builtin/verify-tag.c
index 99f8148..7a1121b 100644
--- a/builtin/verify-tag.c
+++ b/builtin/verify-tag.c
@@ -51,8 +51,10 @@ int cmd_verify_tag(int argc, const char **argv, const char *prefix)
 		const char *name = argv[i++];
 		if (get_sha1(name, sha1))
 			had_error = !!error("tag '%s' not found.", name);
-		else if (gpg_verify_tag(sha1, name, flags))
-			had_error = 1;
+		else {
+			if (verify_and_format_tag(sha1, name, NULL, flags))
+				had_error = 1;
+		}
 	}
 	return had_error;
 }
diff --git a/tag.c b/tag.c
index d1dcd18..e08da51 100644
--- a/tag.c
+++ b/tag.c
@@ -3,6 +3,7 @@
 #include "commit.h"
 #include "tree.h"
 #include "blob.h"
+#include "ref-filter.h"
 
 const char *tag_type = "tag";
 
@@ -30,8 +31,8 @@ static int run_gpg_verify(const char *buf, unsigned long size, unsigned flags)
 	return ret;
 }
 
-int gpg_verify_tag(const unsigned char *sha1, const char *name_to_report,
-		unsigned flags)
+int verify_and_format_tag(const unsigned char *sha1, const char *name_to_report,
+		const char *fmt_pretty, unsigned flags)
 {
 	enum object_type type;
 	char *buf;
@@ -56,6 +57,15 @@ int gpg_verify_tag(const unsigned char *sha1, const char *name_to_report,
 	ret = run_gpg_verify(buf, size, flags);
 
 	free(buf);
+
+	if (fmt_pretty) {
+		struct ref_array_item *ref_item;
+		ref_item = new_ref_item(name_to_report, sha1, 0);
+		ref_item->kind = FILTER_REFS_TAGS;
+		show_ref_item(ref_item, fmt_pretty, 0);
+		free_ref_item(ref_item);
+	}
+
 	return ret;
 }
 
diff --git a/tag.h b/tag.h
index a5721b6..460b6f9 100644
--- a/tag.h
+++ b/tag.h
@@ -17,7 +17,7 @@ extern int parse_tag_buffer(struct tag *item, const void *data, unsigned long si
 extern int parse_tag(struct tag *item);
 extern struct object *deref_tag(struct object *, const char *, int);
 extern struct object *deref_tag_noverify(struct object *);
-extern int gpg_verify_tag(const unsigned char *sha1,
-		const char *name_to_report, unsigned flags);
+extern int verify_and_format_tag(const unsigned char *sha1,
+		const char *name_to_report, const char *fmt_pretty, unsigned flags);
 
 #endif /* TAG_H */
-- 
2.10.0