[PATCH v2 4/6] ref-filter: add deltabase option
- From
Olga Telezhnaya <olyatelezhnaya@gmail.com>
- Date
- Dec 24, 2018, 13:24 UTC
- Message-ID
- <01020167e06368eb-576f5c6e-b54d-4169-971d-a1affed08551-000000@eu-west-1.amazonses.com>
- In-Reply-To
- <01020167e063687c-37a43a09-0a5f-4335-8c21-ec15a0a67882-000000@eu-west-1.amazonses.com>
Add new formatting option: deltabase. If the object is stored as a delta on-disk, this expands to the 40-hex sha1 of the delta base object. Otherwise, expands to the null sha1 (40 zeroes). We have same option in cat-file command. Hopefully, in the end I will remove formatting code from cat-file and reuse formatting parts from ref-filter.
Signed-off-by: Olga Telezhnaia <olyatelezhnaya@gmail.com> --- ref-filter.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-)
diff --git a/ref-filter.c b/ref-filter.c index 45c558bcbd521..debb8cacad067 100644 --- a/ref-filter.c +++ b/ref-filter.c @@ -246,6 +246,18 @@ static int objectsize_atom_parser(const struct ref_format *format, struct used_a return 0; } +static int deltabase_atom_parser(const struct ref_format *format, struct used_atom *atom, + const char *arg, struct strbuf *err) +{ + if (arg) + return strbuf_addf_ret(err, -1, _("%%(deltabase) does not take arguments")); + if (*atom->name == '*') + oi_deref.info.delta_base_sha1 = oi_deref.delta_base_oid.hash; + else + oi.info.delta_base_sha1 = oi.delta_base_oid.hash; + return 0; +} + static int body_atom_parser(const struct ref_format *format, struct used_atom *atom, const char *arg, struct strbuf *err) { @@ -437,6 +449,7 @@ static struct { { "objecttype", SOURCE_OTHER, FIELD_STR, objecttype_atom_parser }, { "objectsize", SOURCE_OTHER, FIELD_ULONG, objectsize_atom_parser }, { "objectname", SOURCE_OTHER, FIELD_STR, objectname_atom_parser }, + { "deltabase", SOURCE_OTHER, FIELD_STR, deltabase_atom_parser }, { "tree", SOURCE_OBJ }, { "parent", SOURCE_OBJ }, { "numparent", SOURCE_OBJ, FIELD_ULONG }, @@ -892,7 +905,8 @@ static void grab_common_values(struct atom_value *val, int deref, struct expand_ } else if (!strcmp(name, "objectsize")) { v->value = oi->size; v->s = xstrfmt("%"PRIuMAX , (uintmax_t)oi->size); - } + } else if (!strcmp(name, "deltabase")) + v->s = xstrdup(oid_to_hex(&oi->delta_base_oid)); else if (deref) grab_objectname(name, &oi->oid, v, &used_atom[i]); } -- https://github.com/git/git/pull/552