Re: [PATCH v2 4/5] builtin/verify-tag: add --format to verify-tag

> From: Santiago Torres <santiago@nyu.edu>
>
> Callers of verify-tag may want to cross-check the tagname from refs/tags
> with the tagname from the tag object header upon GPG verification. This
> is to avoid tag refs that point to an incorrect object.
>
> Add a --format parameter to git verify-tag to print the formatted tag
> object header in addition to or instead of the --verbose or --raw GPG
> verification output.
>
> Signed-off-by: Santiago Torres <santiago@nyu.edu>
> ---
> builtin/verify-tag.c | 13 +++++++++++--
> 1 file changed, 11 insertions(+), 2 deletions(-)
>
> diff --git a/builtin/verify-tag.c b/builtin/verify-tag.c
> index de10198..a941053 100644
> --- a/builtin/verify-tag.c
> +++ b/builtin/verify-tag.c
> @@ -12,12 +12,15 @@
> #include <signal.h>
> #include "parse-options.h"
> #include "gpg-interface.h"
> +#include "ref-filter.h"
>
> static const char * const verify_tag_usage[] = {
> - N_("git verify-tag [-v | --verbose] <tag>..."),
> + N_("git verify-tag [-v | --verbose] [--format=<format>] <tag>..."),

>  NULL
> };
>
> +static char *fmt_pretty;
> +
> static int git_verify_tag_config(const char *var, const char *value, void 
> *cb)
> {
>  int status = git_gpg_config(var, value, cb);
> @@ -33,6 +36,7 @@ int cmd_verify_tag(int argc, const char **argv, const 
> char *prefix)
>  const struct option verify_tag_options[] = {
>  OPT__VERBOSE(&verbose, N_("print tag contents")),
>  OPT_BIT(0, "raw", &flags, N_("print raw gpg status output"), 
> GPG_VERIFY_RAW),
> + OPT_STRING(  0 , "format", &fmt_pretty, N_("format"), N_("format to use 
> for the output")),
>  OPT_END()
>  };
>
> @@ -46,12 +50,17 @@ int cmd_verify_tag(int argc, const char **argv, const 
> char *prefix)
>  if (verbose)
>  flags |= GPG_VERIFY_VERBOSE;
>
> + if (fmt_pretty) {
> + verify_ref_format(fmt_pretty);
> + flags |= GPG_VERIFY_QUIET;
> + }
> +
>  while (i < argc) {
>  unsigned char sha1[20];
>  const char *name = argv[i++];
>  if (get_sha1(name, sha1))
>  had_error = !!error("tag '%s' not found.", name);
> - else if (verify_and_format_tag(sha1, name, NULL, flags))
> + else if (verify_and_format_tag(sha1, name, fmt_pretty, flags))
>  had_error = 1;
>  }
>  return had_error;
> -- 
> 2.10.0
>