From: Karthik Nayak <karthik....@gmail.com>
Implement the '--format' option provided by 'ref-filter'.
This lets the user list tags as per desired format similar
to the implementation in 'git for-each-ref'.
Add tests and documentation for the same.
Mentored-by: Christian Couder <christian.cou...@gmail.com>
Mentored-by: Matthieu Moy <matthieu....@grenoble-inp.fr>
Signed-off-by: Karthik Nayak <karthik....@gmail.com>
---
Documentation/git-tag.txt | 15 ++++++++++++++-
builtin/tag.c | 11 +++++++----
t/t7004-tag.sh | 16 ++++++++++++++++
3 files changed, 37 insertions(+), 5 deletions(-)
diff --git a/Documentation/git-tag.txt b/Documentation/git-tag.txt
index 3ac4a96..75703c5 100644
--- a/Documentation/git-tag.txt
+++ b/Documentation/git-tag.txt
@@ -13,7 +13,8 @@ SYNOPSIS
<tagname> [<commit> | <object>]
'git tag' -d <tagname>...
'git tag' [-n[<num>]] -l [--contains <commit>] [--points-at <object>]
- [--column[=<options>] | --no-column] [--create-reflog] [--sort=<key>]
[<pattern>...]
+ [--column[=<options>] | --no-column] [--create-reflog] [--sort=<key>]
+ [--format=<format>] [<pattern>...]
'git tag' -v <tagname>...
DESCRIPTION
@@ -158,6 +159,18 @@ This option is only applicable when listing tags without
annotation lines.
The object that the new tag will refer to, usually a commit.
Defaults to HEAD.
+<format>::
+ A string that interpolates `%(fieldname)` from the object
+ pointed at by a ref being shown. If `fieldname` is prefixed
+ with an asterisk (`*`) and the ref points at a tag object, the
+ value for the field in the object tag refers is used. When
+ unspecified, defaults to `%(refname:short)`. It also
+ interpolates `%%` to `%`, and `%xx` where `xx` are hex digits
+ interpolates to character with hex code `xx`; for example
+ `%00` interpolates to `\0` (NUL), `%09` to `\t` (TAB) and
+ `%0a` to `\n` (LF). The fields are same as those in `git
+ for-each-ref`.
+
CONFIGURATION
-------------
diff --git a/builtin/tag.c b/builtin/tag.c
index 829af6f..13c9579 100644
--- a/builtin/tag.c
+++ b/builtin/tag.c
@@ -30,10 +30,9 @@ static const char * const git_tag_usage[] = {
static unsigned int colopts;
-static int list_tags(struct ref_filter *filter, struct ref_sorting *sorting)
+static int list_tags(struct ref_filter *filter, struct ref_sorting *sorting,
const char *format)
{
struct ref_array array;
- char *format;
int i;
memset(&array, 0, sizeof(array));
@@ -43,7 +42,7 @@ static int list_tags(struct ref_filter *filter, struct
ref_sorting *sorting)
if (filter->lines)
format = "%(align:left,16)%(refname:short)";
- else
+ else if (!format)
format = "%(refname:short)";
verify_ref_format(format);
@@ -327,6 +326,7 @@ int cmd_tag(int argc, const char **argv, const char *prefix)
struct strbuf err = STRBUF_INIT;
struct ref_filter filter;
static struct ref_sorting *sorting = NULL, **sorting_tail = &sorting;
+ const char *format = NULL;
struct option options[] = {
OPT_CMDMODE('l', "list", &cmdmode, N_("list tag names"), 'l'),
{ OPTION_INTEGER, 'n', NULL, &filter.lines, N_("n"),
@@ -359,6 +359,7 @@ int cmd_tag(int argc, const char **argv, const char *prefix)
OPTION_CALLBACK, 0, "points-at", &filter.points_at,
N_("object"),
N_("print only tags of the object"), 0,
parse_opt_object_name
},
+ OPT_STRING( 0 , "format", &format, N_("format"), N_("format to
use for the output")),
OPT_END()
};
@@ -398,8 +399,10 @@ int cmd_tag(int argc, const char **argv, const char
*prefix)
copts.padding = 2;
run_column_filter(colopts, &copts);
}
+ if (format && (filter.lines != -1))
+ die(_("--format and -n are incompatible"));
filter.name_patterns = argv;
- ret = list_tags(&filter, sorting);
+ ret = list_tags(&filter, sorting, format);
if (column_active(colopts))
stop_column_filter();
return ret;
diff --git a/t/t7004-tag.sh b/t/t7004-tag.sh
index 1f066aa..1809011 100755
--- a/t/t7004-tag.sh
+++ b/t/t7004-tag.sh
@@ -1519,4 +1519,20 @@ EOF"
test_cmp expect actual
'
+test_expect_success '--format cannot be used with -n' '
+ test_must_fail git tag -l -n4 --format="%(refname)"
+'
+
+test_expect_success '--format should list tags as per format given' '
+ cat >expect <<-\EOF &&
+ refname : refs/tags/foo1.10
+ refname : refs/tags/foo1.3
+ refname : refs/tags/foo1.6
+ refname : refs/tags/foo1.6-rc1
+ refname : refs/tags/foo1.6-rc2
+ EOF
+ git tag -l --format="refname : %(refname)" "foo*" >actual &&
+ test_cmp expect actual
+'
+
test_done
--
2.5.0
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