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.couder@xxxxxxxxx>
Mentored-by: Matthieu Moy <matthieu.moy@xxxxxxxxxxxxxxx>
Signed-off-by: Karthik Nayak <karthik.188@xxxxxxxxx>
---
Documentation/git-tag.txt | 15 ++++++++++++++-
builtin/tag.c | 14 ++++++++++----
t/t7004-tag.sh | 16 ++++++++++++++++
3 files changed, 40 insertions(+), 5 deletions(-)
diff --git a/Documentation/git-tag.txt b/Documentation/git-tag.txt
index 1950d94..16e396c 100644
--- a/Documentation/git-tag.txt
+++ b/Documentation/git-tag.txt
@@ -13,7 +13,7 @@ SYNOPSIS
<tagname> [<commit> | <object>]
'git tag' -d <tagname>...
'git tag' [-n[<num>]] -l [--contains <commit>] [--points-at <object>]
- [--column[=<options>] | --no-column] [--sort=<key>] [<pattern>...]
+ [--column[=<options>] | --no-column] [--sort=<key>] [--format=<format>]
[<pattern>...]
'git tag' -v <tagname>...
@@ -156,6 +156,19 @@ 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
+ `%(objectname) SPC %(objecttype) TAB %(refname)`.
+ 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 d80120e..91356c9 100644
--- a/builtin/tag.c
+++ b/builtin/tag.c
@@ -30,12 +30,14 @@ 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;
+ if (!format)
+ check_format = 1;
+
memset(&array, 0, sizeof(array));
if (filter->lines == -1)
@@ -43,7 +45,7 @@ static int list_tags(struct ref_filter *filter, struct ref_sorting *sorting)
if (filter->lines)
format = "%(refname:lalign16)";
- else
+ else if (!format)
format = "%(refname:short)";
verify_ref_format(format);
@@ -324,6 +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"),
@@ -355,6 +358,7 @@ 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()
};
@@ -394,8 +398,10 @@ 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 51a233f..e8cebb6 100755
--- a/t/t7004-tag.sh
+++ b/t/t7004-tag.sh
@@ -1507,4 +1507,20 @@ 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 &&
+ foo1.10
+ foo1.3
+ foo1.6
+ foo1.6-rc1
+ foo1.6-rc2
+ EOF
+ git tag -l --format="%(refname)" "foo*" >actual &&
+ test_cmp expect actual
+'
+
test_done
--
2.4.4
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