verify-tag: prepare verify_tag for libification

The current interface of verify_tag() resolves reference names to SHA1, however, the plan is to make this functionality public and the current interface is cumbersome for callers: they are expected to supply the textual representation of a sha1/refname. In many cases, this requires them to turn the sha1 to hex representation, just to be converted back inside verify_tag. Add a SHA1 parameter to use instead of the name parameter, and rename the name parameter to "name_to_report" for reporting purposes only. Helped-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Santiago Torres <santiago@nyu.edu> Reviewed-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Santiago Torres committed Apr 19, 2016 at 13:47 UTC 78ccd4419525562a2c9d2b7cebddba0914bde151
1 file changed +17 -9
builtin/verify-tag.c
+17 -9
@@ -42,25 +42,28 @@ static int run_gpg_verify(const char *buf, unsigned long size, unsigned flags)
42 return ret;
43 }
44
45 -static int verify_tag(const char *name, unsigned flags)
45 +static int verify_tag(const unsigned char *sha1, const char *name_to_report,
46 + unsigned flags)
47 {
48 enum object_type type;
48 - unsigned char sha1[20];
49 char *buf;
50 unsigned long size;
51 int ret;
52
53 - if (get_sha1(name, sha1))
54 - return error("tag '%s' not found.", name);
55 -
53 type = sha1_object_info(sha1, NULL);
54 if (type != OBJ_TAG)
55 return error("%s: cannot verify a non-tag object of type %s.",
59 - name, typename(type));
56 + name_to_report ?
57 + name_to_report :
58 + find_unique_abbrev(sha1, DEFAULT_ABBREV),
59 + typename(type));
60
61 buf = read_sha1_file(sha1, &type, &size);
62 if (!buf)
63 - return error("%s: unable to read file.", name);
63 + return error("%s: unable to read file.",
64 + name_to_report ?
65 + name_to_report :
66 + find_unique_abbrev(sha1, DEFAULT_ABBREV));
67
68 ret = run_gpg_verify(buf, size, flags);
69
@@ -96,8 +99,13 @@ int cmd_verify_tag(int argc, const char **argv, const char *prefix)
99 if (verbose)
100 flags |= GPG_VERIFY_VERBOSE;
101
99 - while (i < argc)
100 - if (verify_tag(argv[i++], flags))
102 + while (i < argc) {
103 + unsigned char sha1[20];
104 + const char *name = argv[i++];
105 + if (get_sha1(name, sha1))
106 + had_error = !!error("tag '%s' not found.", name);
107 + else if (verify_tag(sha1, name, flags))
108 had_error = 1;
109 + }
110 return had_error;
111 }