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shorten_unambiguous_ref(): add strict mode

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Add the strict mode of abbreviation to shorten_unambiguous_ref(), i.e. the
resulting ref won't trigger the ambiguous ref warning.

All users of shorten_unambiguous_ref() still use the loose mode.

Signed-off-by: Bert Wesarg <bert.wesarg@googlemail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Bert Wesarg
2009-04-13 12:25:46 +02:00
committed by Junio C Hamano
parent f800b65bea
commit 6e7b3309d3
4 changed files with 19 additions and 7 deletions
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18
refs.c
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@ -1681,7 +1681,7 @@ static void gen_scanf_fmt(char *scanf_fmt, const char *rule)
return;
}
char *shorten_unambiguous_ref(const char *ref)
char *shorten_unambiguous_ref(const char *ref, int strict)
{
int i;
static char **scanf_fmts;
@ -1718,6 +1718,7 @@ char *shorten_unambiguous_ref(const char *ref)
/* skip first rule, it will always match */
for (i = nr_rules - 1; i > 0 ; --i) {
int j;
int rules_to_fail = i;
int short_name_len;
if (1 != sscanf(ref, scanf_fmts[i], short_name))
@ -1725,15 +1726,26 @@ char *shorten_unambiguous_ref(const char *ref)
short_name_len = strlen(short_name);
/*
* in strict mode, all (except the matched one) rules
* must fail to resolve to a valid non-ambiguous ref
*/
if (strict)
rules_to_fail = nr_rules;
/*
* check if the short name resolves to a valid ref,
* but use only rules prior to the matched one
*/
for (j = 0; j < i; j++) {
for (j = 0; j < rules_to_fail; j++) {
const char *rule = ref_rev_parse_rules[j];
unsigned char short_objectname[20];
char refname[PATH_MAX];
/* skip matched rule */
if (i == j)
continue;
/*
* the short name is ambiguous, if it resolves
* (with this previous rule) to a valid ref
@ -1749,7 +1761,7 @@ char *shorten_unambiguous_ref(const char *ref)
* short name is non-ambiguous if all previous rules
* haven't resolved to a valid ref
*/
if (j == i)
if (j == rules_to_fail)
return short_name;
}