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shorten_unambiguous_ref(): add strict mode 

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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4
builtin-branch.c
View File

@ -311,14 +311,14 @@ static void fill_tracking_info(struct strbuf *stat, const char *branch_name,
if (branch && branch->merge && branch->merge[0]->dst && if (branch && branch->merge && branch->merge[0]->dst &&
show_upstream_ref) show_upstream_ref)
strbuf_addf(stat, "[%s] ", strbuf_addf(stat, "[%s] ",
shorten_unambiguous_ref(branch->merge[0]->dst)); shorten_unambiguous_ref(branch->merge[0]->dst, 0));
return; return;
} }
strbuf_addch(stat, '['); strbuf_addch(stat, '[');
if (show_upstream_ref) if (show_upstream_ref)
strbuf_addf(stat, "%s: ", strbuf_addf(stat, "%s: ",
shorten_unambiguous_ref(branch->merge[0]->dst)); shorten_unambiguous_ref(branch->merge[0]->dst, 0));
if (!ours) if (!ours)
strbuf_addf(stat, "behind %d] ", theirs); strbuf_addf(stat, "behind %d] ", theirs);
else if (!theirs) else if (!theirs)

2
builtin-for-each-ref.c
View File

@ -601,7 +601,7 @@ static void populate_value(struct refinfo *ref)
if (formatp) { if (formatp) {
formatp++; formatp++;
if (!strcmp(formatp, "short")) if (!strcmp(formatp, "short"))
refname = shorten_unambiguous_ref(refname); refname = shorten_unambiguous_ref(refname, 0);
else else
die("unknown %.*s format %s", die("unknown %.*s format %s",
(int)(formatp - name), name, formatp); (int)(formatp - name), name, formatp);

18
refs.c
View File

@ -1681,7 +1681,7 @@ static void gen_scanf_fmt(char *scanf_fmt, const char *rule)
return; return;
} }
char *shorten_unambiguous_ref(const char *ref) char *shorten_unambiguous_ref(const char *ref, int strict)
{ {
int i; int i;
static char **scanf_fmts; static char **scanf_fmts;
@ -1718,6 +1718,7 @@ char *shorten_unambiguous_ref(const char *ref)
/* skip first rule, it will always match */ /* skip first rule, it will always match */
for (i = nr_rules - 1; i > 0 ; --i) { for (i = nr_rules - 1; i > 0 ; --i) {
int j; int j;
int rules_to_fail = i;
int short_name_len; int short_name_len;
if (1 != sscanf(ref, scanf_fmts[i], short_name)) 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); 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, * check if the short name resolves to a valid ref,
* but use only rules prior to the matched one * 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]; const char *rule = ref_rev_parse_rules[j];
unsigned char short_objectname[20]; unsigned char short_objectname[20];
char refname[PATH_MAX]; char refname[PATH_MAX];
/* skip matched rule */
if (i == j)
continue;
/* /*
* the short name is ambiguous, if it resolves * the short name is ambiguous, if it resolves
* (with this previous rule) to a valid ref * (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 * short name is non-ambiguous if all previous rules
* haven't resolved to a valid ref * haven't resolved to a valid ref
*/ */
if (j == i) if (j == rules_to_fail)
return short_name; return short_name;
} }

2
refs.h
View File

@ -81,7 +81,7 @@ extern int for_each_reflog(each_ref_fn, void *);
extern int check_ref_format(const char *target); extern int check_ref_format(const char *target);
extern const char *prettify_ref(const struct ref *ref); extern const char *prettify_ref(const struct ref *ref);
extern char *shorten_unambiguous_ref(const char *ref); extern char *shorten_unambiguous_ref(const char *ref, int strict);
/** rename ref, return 0 on success **/ /** rename ref, return 0 on success **/
extern int rename_ref(const char *oldref, const char *newref, const char *logmsg); extern int rename_ref(const char *oldref, const char *newref, const char *logmsg);