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for-each-ref --format='%(symref) %(symref:short)' 

New %(symref) output atom expands to the name of the ref a symbolic ref
points at, or an empty string if the ref being shown is not a symref.

This may help scripted Porcelain writers.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Junio C Hamano 2010-02-13 11:57:08 -08:00
parent 20322e0b55
commit 5cdd628c84
1 changed files with 19 additions and 1 deletions
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20
builtin-for-each-ref.c
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@ -33,6 +33,8 @@ struct ref_sort {
struct refinfo {
char *refname;
unsigned char objectname[20];
int flag;
const char *symref;
struct atom_value *value;
};
@ -68,6 +70,7 @@ static struct {
{ "body" },
{ "contents" },
{ "upstream" },
{ "symref" },
};
/*
@ -82,7 +85,7 @@ static struct {
*/
static const char **used_atom;
static cmp_type *used_atom_type;
static int used_atom_cnt, sort_atom_limit, need_tagged;
static int used_atom_cnt, sort_atom_limit, need_tagged, need_symref;
/*
* Used to parse format string and sort specifiers
@ -135,6 +138,8 @@ static int parse_atom(const char *atom, const char *ep)
used_atom_type[at] = valid_atom[i].cmp_type;
if (*atom == '*')
need_tagged = 1;
if (!strcmp(used_atom[at], "symref"))
need_symref = 1;
return at;
}
@ -566,6 +571,16 @@ static void populate_value(struct refinfo *ref)
ref->value = xcalloc(sizeof(struct atom_value), used_atom_cnt);
if (need_symref && (ref->flag & REF_ISSYMREF) && !ref->symref) {
unsigned char unused1[20];
const char *symref;
symref = resolve_ref(ref->refname, unused1, 1, NULL);
if (symref)
ref->symref = xstrdup(symref);
else
ref->symref = "";
}
/* Fill in specials first */
for (i = 0; i < used_atom_cnt; i++) {
const char *name = used_atom[i];
@ -581,6 +596,8 @@ static void populate_value(struct refinfo *ref)
if (!prefixcmp(name, "refname"))
refname = ref->refname;
else if (!prefixcmp(name, "symref"))
refname = ref->symref ? ref->symref : "";
else if (!prefixcmp(name, "upstream")) {
struct branch *branch;
/* only local branches may have an upstream */
@ -726,6 +743,7 @@ static int grab_single_ref(const char *refname, const unsigned char *sha1, int f
ref = xcalloc(1, sizeof(*ref));
ref->refname = xstrdup(refname);
hashcpy(ref->objectname, sha1);
ref->flag = flag;
cnt = cb->grab_cnt;
cb->grab_array = xrealloc(cb->grab_array,