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ref-filter: add support to sort by version

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Add support to sort by version using the "v:refname" and
"version:refname" option. This is achieved by using the 'versioncmp()'
function as the comparing function for qsort.

This option is included to support sorting by versions in `git tag -l`
which will eventually be ported to use ref-filter APIs.

Add documentation and tests for the same.

Mentored-by: Christian Couder <christian.couder@gmail.com>
Mentored-by: Matthieu Moy <matthieu.moy@grenoble-inp.fr>
Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Karthik Nayak 2015-09-10 21:18:25 +05:30 committed by Junio C Hamano
parent 1bb38e5a6a
commit 90c004085c
4 changed files with 51 additions and 6 deletions
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3
Documentation/git-for-each-ref.txt
View File

@ -157,6 +157,9 @@ For sorting purposes, fields with numeric values sort in numeric
order (`objectsize`, `authordate`, `committerdate`, `taggerdate`).
All other fields are used to sort in their byte-value order.
There is also an option to sort by versions, this can be done by using
the fieldname `version:refname` or its alias `v:refname`.
In any case, a field name that refers to a field inapplicable to
the object referred by the ref does not cause an error. It
returns an empty string instead.

15
ref-filter.c
View File

@ -11,6 +11,8 @@
#include "ref-filter.h"
#include "revision.h"
#include "utf8.h"
#include "git-compat-util.h"
#include "version.h"
typedef enum { FIELD_STR, FIELD_ULONG, FIELD_TIME } cmp_type;
@ -1439,19 +1441,19 @@ static int cmp_ref_sorting(struct ref_sorting *s, struct ref_array_item *a, stru
get_ref_atom_value(a, s->atom, &va);
get_ref_atom_value(b, s->atom, &vb);
switch (cmp_type) {
case FIELD_STR:
if (s->version)
cmp = versioncmp(va->s, vb->s);
else if (cmp_type == FIELD_STR)
cmp = strcmp(va->s, vb->s);
break;
default:
else {
if (va->ul < vb->ul)
cmp = -1;
else if (va->ul == vb->ul)
cmp = 0;
else
cmp = 1;
break;
}
return (s->reverse) ? -cmp : cmp;
}
@ -1584,6 +1586,9 @@ int parse_opt_ref_sorting(const struct option *opt, const char *arg, int unset)
s->reverse = 1;
arg++;
}
if (skip_prefix(arg, "version:", &arg) ||
skip_prefix(arg, "v:", &arg))
s->version = 1;
len = strlen(arg);
s->atom = parse_ref_filter_atom(arg, arg+len);
return 0;

3
ref-filter.h
View File

@ -28,7 +28,8 @@ struct atom_value;
struct ref_sorting {
struct ref_sorting *next;
int atom; /* index into used_atom array (internal) */
unsigned reverse : 1;
unsigned reverse : 1,
version : 1;
};
struct ref_array_item {

36
t/t6302-for-each-ref-filter.sh
View File

@ -219,4 +219,40 @@ test_expect_success '`%(contents:lines=-1)` should fail' '
test_must_fail git for-each-ref --format="%(refname:short) |%(contents:lines=-1)"
'
test_expect_success 'setup for version sort' '
test_commit foo1.3 &&
test_commit foo1.6 &&
test_commit foo1.10
'
test_expect_success 'version sort' '
git for-each-ref --sort=version:refname --format="%(refname:short)" refs/tags/ | grep "foo" >actual &&
cat >expect <<-\EOF &&
foo1.3
foo1.6
foo1.10
EOF
test_cmp expect actual
'
test_expect_success 'version sort (shortened)' '
git for-each-ref --sort=v:refname --format="%(refname:short)" refs/tags/ | grep "foo" >actual &&
cat >expect <<-\EOF &&
foo1.3
foo1.6
foo1.10
EOF
test_cmp expect actual
'
test_expect_success 'reverse version sort' '
git for-each-ref --sort=-version:refname --format="%(refname:short)" refs/tags/ | grep "foo" >actual &&
cat >expect <<-\EOF &&
foo1.10
foo1.6
foo1.3
EOF
test_cmp expect actual
'
test_done